From af3efea74d5ae35935912e1ca5b22b3ee7e0eef4 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Fri, 20 Oct 2017 13:37:02 +0100
Subject: [PATCH 01/22] Renaming java files

---
 .../AbstractGeneric.class                     | Bin 0 -> 401 bytes
 .../AbstractGeneric.java                      |   4 +++
 .../AbstractGenericClass.class                | Bin 421 -> 0 bytes
 .../AbstractGenericClass.java                 |   4 ---
 .../java_bytecode_parse_generics/Bar.class    | Bin 221 -> 0 bytes
 .../java_bytecode_parse_generics/Bar.java     |   4 ---
 .../BasicInterface.java                       |   4 ---
 .../BasicInterfaceCopy.class                  | Bin 138 -> 0 bytes
 .../BasicInterfaceCopy.java                   |   4 ---
 .../DerivedGeneric.class                      | Bin 309 -> 318 bytes
 .../DerivedGeneric.java                       |   2 +-
 .../java_bytecode_parse_generics/Foo.class    | Bin 356 -> 0 bytes
 .../Generic.class                             | Bin 0 -> 662 bytes
 .../java_bytecode_parse_generics/Generic.java |  11 +++++++
 .../GenericFunctions.class                    | Bin 1791 -> 1772 bytes
 .../GenericFunctions.java                     |  10 +++---
 .../Interface.class                           | Bin 0 -> 120 bytes
 .../Interface.java                            |   4 +++
 ...icInterface.class => Interface_Copy.class} | Bin 130 -> 130 bytes
 .../Interface_Copy.java                       |   4 +++
 .../Interface_Implementation.class            | Bin 0 -> 414 bytes
 ...Foo.java => Interface_Implementation.java} |   2 +-
 .../Interface_Implementation_Derived.class    | Bin 0 -> 329 bytes
 .../Interface_Implementation_Derived.java     |   4 +++
 .../Outer$Inner.class                         | Bin 618 -> 598 bytes
 .../java_bytecode_parse_generics/Outer.java   |   4 +--
 .../RecursiveGeneric.class                    | Bin 346 -> 436 bytes
 .../RecursiveGeneric.java                     |   4 +--
 .../RecursiveGeneric_Derived.class            | Bin 0 -> 366 bytes
 .../RecursiveGeneric_Derived.java             |   4 +++
 .../SimpleGeneric.class                       | Bin 698 -> 0 bytes
 .../SimpleGeneric.java                        |  11 -------
 .../SimpleRecursiveGeneric.class              | Bin 466 -> 0 bytes
 .../SimpleRecursiveGeneric.java               |   4 ---
 .../WildcardGenericFunctions.class            | Bin 2131 -> 2273 bytes
 .../WildcardGenericFunctions.java             |  29 ++++++++++--------
 .../generics05$igeneric05.class               | Bin 856 -> 0 bytes
 .../parse_generic_functions.cpp               |  10 +++---
 .../parse_generic_wildcard_function.cpp       |   9 +++---
 .../parse_signature_descriptor_mismatch.cpp   |   2 +-
 40 files changed, 69 insertions(+), 65 deletions(-)
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/AbstractGeneric.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/AbstractGeneric.java
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/AbstractGenericClass.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/AbstractGenericClass.java
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Bar.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Bar.java
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/BasicInterface.java
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/BasicInterfaceCopy.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/BasicInterfaceCopy.java
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Foo.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Generic.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Generic.java
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Interface.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Interface.java
 rename unit/java_bytecode/java_bytecode_parse_generics/{BasicInterface.class => Interface_Copy.class} (50%)
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Interface_Copy.java
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation.class
 rename unit/java_bytecode/java_bytecode_parse_generics/{Foo.java => Interface_Implementation.java} (53%)
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation_Derived.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation_Derived.java
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric_Derived.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric_Derived.java
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/SimpleGeneric.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/SimpleGeneric.java
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/SimpleRecursiveGeneric.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/SimpleRecursiveGeneric.java
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/generics05$igeneric05.class

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/AbstractGeneric.class b/unit/java_bytecode/java_bytecode_parse_generics/AbstractGeneric.class
new file mode 100644
index 0000000000000000000000000000000000000000..df3a55764e07d5855e9e146aad9a9b6a66b2f783
GIT binary patch
literal 401
zcmZWly-ve07(6$BGz9uX)t#*{(1nRak*Z2%iC}2d-7!{i6&&O`NIVu35(5vwLm|FI
zFf`cG*>}G4_t{_HAD;lOF$v*d6kr_SjKNQoRyJjDW)~X<cUe71hC!yZysMuIX>wka
zq>Qsl@N&bAYWT0{+DEl#7-frMZw(jrR%&UKh#97b{@3Tf%(QDx@;pu{(O;{r=C(Fe
zZI<LW*^a;PdCB#5eqZdQuyOidVhGn&ZG>E@rprmEk*ns82rfK&Q|F9f*sb86qeq|9
w3`Ub;gg&uF%K`859qf$+2LYi^a$`LrjM}}2K0;#02TDY&hm#ghF=*G}59|I~y8r+H

literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/AbstractGeneric.java b/unit/java_bytecode/java_bytecode_parse_generics/AbstractGeneric.java
new file mode 100644
index 00000000000..4196629ce73
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/AbstractGeneric.java
@@ -0,0 +1,4 @@
+public abstract class AbstractGeneric<T>
+{
+
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/AbstractGenericClass.class b/unit/java_bytecode/java_bytecode_parse_generics/AbstractGenericClass.class
deleted file mode 100644
index cbfa2cb7b184b90686c08afef32c7fde510da40c..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 421
zcmZvYPfNov7{;Hh|6HwZ&LM~=Z_|Ujc(SE126`!aSlK<TVP@1;(p2zcc@jMM0sK&7
zZ;BqKP2fqMU*0Eg$oJ;+3&1tTJ}ex07<o8ma3fht9Wz*yizS0SuO0=%Ad#iGZ=N%u
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z7jji{-6-liiPD>7&0qPn;N@!ikgY|o!}vd9@E291a&arodr!NbbY(6IV8dY;cNH)U
z|Ms%a(W4JDgVCfcsY`Cwdce8-0DC83!6S7Eo6<efpxry@!zZ`DLjrO=9JG3fLAwsO
D9mry*

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/AbstractGenericClass.java b/unit/java_bytecode/java_bytecode_parse_generics/AbstractGenericClass.java
deleted file mode 100644
index 3d0674893a4..00000000000
--- a/unit/java_bytecode/java_bytecode_parse_generics/AbstractGenericClass.java
+++ /dev/null
@@ -1,4 +0,0 @@
-public abstract class AbstractGenericClass<T>
-{
-
-}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Bar.class b/unit/java_bytecode/java_bytecode_parse_generics/Bar.class
deleted file mode 100644
index 3b52a177ccaea0ff06e2439b8d485a80ce068fdc..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 221
zcmXYr&kn&r5XQghU#e6*fg=uF+=v5-Q{zH<-_|Bps++9VdpSuQJb;H1(=y4<eBW<o
zC-eS1UjXLl2e8rg(en`zyrn8sxgyx3aYAr5`X~uetO~iSE~zvJk>*SWvCc%E2%~EM
zhfaA?SArX_g;@}Sy{=3qx2pcoVm3XCn+V~+<^AkAZ?(n{7N1ZD@#8L6kJXH8P29-?
ZbZ23~=j=6*H?j_Y185^)N9Z(D;TK_ZBozPv

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Bar.java b/unit/java_bytecode/java_bytecode_parse_generics/Bar.java
deleted file mode 100644
index 273a20744dc..00000000000
--- a/unit/java_bytecode/java_bytecode_parse_generics/Bar.java
+++ /dev/null
@@ -1,4 +0,0 @@
-class Bar extends Foo
-{
-
-}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/BasicInterface.java b/unit/java_bytecode/java_bytecode_parse_generics/BasicInterface.java
deleted file mode 100644
index 47f91d66f86..00000000000
--- a/unit/java_bytecode/java_bytecode_parse_generics/BasicInterface.java
+++ /dev/null
@@ -1,4 +0,0 @@
-interface BasicInterface
-{
-  int getX();
-}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/BasicInterfaceCopy.class b/unit/java_bytecode/java_bytecode_parse_generics/BasicInterfaceCopy.class
deleted file mode 100644
index c61caf0740a0fecd636a23e0b54ee6529d7fbefb..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 138
zcmX^0Z`VEs1_l!bPId-%b_Nbc2A1^Hk_biyW(`eGMh33n{L-T2RJY8WR7M7Ir^MpS
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Qw1I&I#A09tl1vP20PANU7XSbN

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/BasicInterfaceCopy.java b/unit/java_bytecode/java_bytecode_parse_generics/BasicInterfaceCopy.java
deleted file mode 100644
index 3a87c8d8c88..00000000000
--- a/unit/java_bytecode/java_bytecode_parse_generics/BasicInterfaceCopy.java
+++ /dev/null
@@ -1,4 +0,0 @@
-interface BasicInterfaceCopy
-{
-  int getX();
-}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.class b/unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.class
index 65bdd950e8564a6fa2082c0a0b4ee4a7147f331d..ff3766d716e4179c02e20d6a3ac732c150fe59f2 100644
GIT binary patch
delta 50
zcmdnWw2x^*m9najdum>4QD(A@k7r&<YEfEZa%#M1Zb43JZfaghVo7Fx-o!pTM)rx9
FlK|W26FdL_

delta 41
scmdnTw3TT>m57*6aAs~nPO5uqUTRThvW<^he*VO{cI><m;fZ&W0644<ga7~l

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.java b/unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.java
index 5eb08c7a2a9..8200e5de72e 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.java
@@ -1,4 +1,4 @@
-class DerivedGeneric extends SimpleGeneric<Foo>
+class DerivedGeneric extends Generic<Interface_Implementation>
 {
 
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Foo.class b/unit/java_bytecode/java_bytecode_parse_generics/Foo.class
deleted file mode 100644
index e64c1c07f6af0f6b43b48c686fa54ed4d3961607..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 356
zcmZvXPfNo<5XIl7Nw$r#t@ZEGqk1qGZ;A(nLLuluDPA}0TDQam(yjQRya<Be!4Kev
z5?>ZU1P^bR`OUo9+0U={4**BlNf2VahYmI*HYK(swgto!H4%tUY-Qc4Kxc1%DiEI6
zw?<%)+sa%l9}3f4tD+<s<+WDjR5iA(e_-hD?Lr{R$8~*7^USy#zln>Jt9sdJGq$a}
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Generic.class b/unit/java_bytecode/java_bytecode_parse_generics/Generic.class
new file mode 100644
index 0000000000000000000000000000000000000000..38e44b1b33d9659b0064d08acd800900925c01df
GIT binary patch
literal 662
zcmZuu%T5A85Uc@~<*__O#V6{KM<N$bN=S@}UN(AQW8!hZ2`<87)&=8V>A{d_;s^Lq
z#u{D*F`M*GS65Z{On-g9e*!qdegXz|Ozb8Q!cLr_U}8@|1Ohp`BZsoum0r7g)$FKN
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literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Generic.java b/unit/java_bytecode/java_bytecode_parse_generics/Generic.java
new file mode 100644
index 00000000000..a4905a01ae9
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/Generic.java
@@ -0,0 +1,11 @@
+class Generic<T>
+{
+  public T t;
+
+  public static <T> Generic<T> makeGeneric(T value)
+  {
+    Generic<T> newST = new Generic<T>();
+    newST.t = value;
+    return newST;
+  }
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.class
index e82142ef77ca5188f0e03e2535118ecf4c740609..964cf0b91984c508a3f086ca96669362af32bfc5 100644
GIT binary patch
delta 288
zcmey*`-XSI1yLRiANSO})S}E}Yt1l52F40T22P)eAC;N-d?w2<YD=oygjo4xC6*=X
z=OpH(>-#5Vr6!kH+iCbrPGd9`Rs_mg`FQ4)q!y(mCZ~eMcQP6(>VtH_h2uSQ3vyC(
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akbn!IxrUK}4<R)<mf3`nee(?FbY=kL(_XXy

delta 307
zcmaFE`=58h1w|nZpWw{gf}B+M)V$Q9%w%iLFh&N(3PuKgsQARE${Zq4_GB(bZFyar
z5G$Xo#Ii*FoW#6zegCAa)Z`LtJD53>{TNN<bbxBCe4G-CGm|~@N>Yo`5|dMrluTnZ
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XFfs_C%1sVnHeu(5gwEzx=5%HN_;X~u

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java b/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java
index 5a5eb5221f7..be30b40cb7a 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java
@@ -1,26 +1,26 @@
 public class GenericFunctions
 {
-  public static <T> void processSimpleGeneric(SimpleGeneric<T> x) {
+  public static <T> void processSimpleGeneric(Generic<T> x) {
     assert(x.t==null);
   }
 
   // Test a wildcard generic bound by an interface
-  public static <T extends BasicInterface> void processUpperBoundInterfaceGeneric(SimpleGeneric<T> x) {
+  public static <T extends Interface> void processUpperBoundInterfaceGeneric(Generic<T> x) {
     assert(x.t.getX() == 4);
   }
 
   // Test a wild card generic bound by a class
-  public static <T extends Foo> void processUpperBoundClassGeneric(SimpleGeneric<T> x) {
+  public static <T extends Interface_Implementation> void processUpperBoundClassGeneric(Generic<T> x) {
     assert(x.t.getX() == 4);
   }
 
   // Test a wild card generic bound by a class and an interface
-  public static <T extends Foo & BasicInterface> void processDoubleUpperBoundClassGeneric(SimpleGeneric<T> x) {
+  public static <T extends Interface_Implementation & Interface> void processDoubleUpperBoundClassGeneric(Generic<T> x) {
     assert(x.t.getX() == 4);
   }
 
   // Test a wild card generic bound by two interfaces
-  public static <T extends BasicInterface & BasicInterfaceCopy> void processDoubleUpperBoundInterfaceGeneric(SimpleGeneric<T> x) {
+  public static <T extends Interface & Interface_Copy> void processDoubleUpperBoundInterfaceGeneric(Generic<T> x) {
       assert(x.t.getX() == 4);
   }
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Interface.class b/unit/java_bytecode/java_bytecode_parse_generics/Interface.class
new file mode 100644
index 0000000000000000000000000000000000000000..c1668c7c684cdc79a582fb0af5bb230548e6ca33
GIT binary patch
literal 120
zcmX^0Z`VEs1_l!bPId-%b_Nbc2A1^Hk_biyW(`eGMh33n{L-T2RJY8WR7M6q&%Bb<
zqO`>1RK2XkvP4D(PPhOgg8)cKKPNFSUEe<`D>b=<je&uYfeC0fkY)jz$G`$&F|Yzj
HCI&VD^3NFy

literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Interface.java b/unit/java_bytecode/java_bytecode_parse_generics/Interface.java
new file mode 100644
index 00000000000..108c7204d01
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/Interface.java
@@ -0,0 +1,4 @@
+interface Interface
+{
+  int getX();
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/BasicInterface.class b/unit/java_bytecode/java_bytecode_parse_generics/Interface_Copy.class
similarity index 50%
rename from unit/java_bytecode/java_bytecode_parse_generics/BasicInterface.class
rename to unit/java_bytecode/java_bytecode_parse_generics/Interface_Copy.class
index 83f7444582fd779e67f1716624b7b078895b92bf..a4b582ab07da53d21a9a34492e42b97e516797e5 100644
GIT binary patch
delta 46
pcmZo-Y+{_CtKykgl3J9On4B8#oL^9>mz7wS$jHElDmpRH5CCl85AXm0

delta 46
pcmZo-Y+{_CtKyVcoSE#ISCU$kmYAHXmz7wS$jHElDmpRH5CCWx55NEb

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Interface_Copy.java b/unit/java_bytecode/java_bytecode_parse_generics/Interface_Copy.java
new file mode 100644
index 00000000000..c09c1310d1c
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/Interface_Copy.java
@@ -0,0 +1,4 @@
+interface Interface_Copy
+{
+  int getX();
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation.class b/unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation.class
new file mode 100644
index 0000000000000000000000000000000000000000..6ac7e2b13eb8cccb5664192ee85b3980e4bc376b
GIT binary patch
literal 414
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literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Foo.java b/unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation.java
similarity index 53%
rename from unit/java_bytecode/java_bytecode_parse_generics/Foo.java
rename to unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation.java
index c81911835c6..2601520dcd4 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/Foo.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation.java
@@ -1,4 +1,4 @@
-class Foo implements BasicInterface
+class Interface_Implementation implements Interface
 {
   public int x;
 
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation_Derived.class b/unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation_Derived.class
new file mode 100644
index 0000000000000000000000000000000000000000..fcb2d78f8f218cd68470302391595c1f7218df9b
GIT binary patch
literal 329
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GUC}Q93{YGE

literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation_Derived.java b/unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation_Derived.java
new file mode 100644
index 00000000000..66c54762b39
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/Interface_Implementation_Derived.java
@@ -0,0 +1,4 @@
+class Interface_Implementation_Derived extends Interface_Implementation
+{
+
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Outer$Inner.class b/unit/java_bytecode/java_bytecode_parse_generics/Outer$Inner.class
index bab6c799f45418d3dca7282efc6e07c1e7d33ce1..0e8a92206dec18952baf1985cdd098dff305cb19 100644
GIT binary patch
delta 112
zcmaFGa*btzs-d8dV^VQRQDSn5dum>4QD(9=BLin}W_n&?Noi3kBZC;a{KNzmNofrq
Z|I(7wB5MrEMU#ajHPA&j`!LEe0sxL8CjkHe

delta 132
zcmcb{@``1Gs<oJpV^VQRQDSn5dum>4QD(ApPGWJfH6sIOaAta5Vo7OHDkFn5Rz(xT
eROA#ieEdsGQj4sytC&1lTuuY4)Mg7tIYs~;jV{yx

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Outer.java b/unit/java_bytecode/java_bytecode_parse_generics/Outer.java
index 0360a6adf15..dcd7ac5bf1f 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/Outer.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/Outer.java
@@ -2,9 +2,9 @@ public class Outer<T>
 {
   private class Inner
   {
-    private final AbstractGenericClass<T> u;
+    private final AbstractGeneric<T> u;
 
-    Inner (AbstractGenericClass<T> t)
+    Inner (AbstractGeneric<T> t)
     {
       this.u = t;
     }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric.class b/unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric.class
index d637a7292a4e56ccfb0d490ac6e5ad3ebbe4315f..7cc35dde4232055d8ffff9bf7e9149ff6f0661ec 100644
GIT binary patch
literal 436
zcmZ`#!AiqG5Ph4ZiH*_LXzSIZ3fhY&4FM7K5)^FceG`|uC2nN9Dfn5Q1P^|IA0^J#
zdT7MU%)Iwz-^|YE*ZT*6GYmtx*bT53V8Fl(L!8}<ve9$75H~^zEz1jr?pRJ0H;ony
zZk`k4CsIk15<EPbFnCw>18KcXDskI96+-8{sECQPy5!Y_YiaR{^vt82GYr?Ym*-!7
z|IZEy4NYn6Ns^!cBc|DmFZih9YC5_rW}-CIACBurm*QI5T?Xx+o!S=>Hqd40w?(4b
zhB$yj_X6lt@X(>?6LJtx1?xjOr0SBgWje=iV6RlT*rez$Nrs5(=%)c&WCLukF+D=g
L%DRu8C5pcR@RDFl

delta 203
zcmdnOe2Yo+)W2Q(7#J8#7=*YOm>Kxl83foF1SdMUO_WyD(eVk+%q_@C4N6TeEh^3|
zOLb4pOD)Pww(&t1v9_D|OoN$)fpxMVqiB&Bc5Ms_3`{^fK!6d5fvSNt8<3?Bq(LIA
pTH6^IHv$<<4D3LX4J^pWzyW0QKol@=GH`+Axxpk4123570|3vXCYS&K

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric.java b/unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric.java
index d3582c8bd46..f95454d3522 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric.java
@@ -1,4 +1,4 @@
-class RecursiveGeneric extends SimpleRecursiveGeneric<RecursiveGeneric>
+class RecursiveGeneric<T extends RecursiveGeneric<T>>
 {
-
+  public T t;
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric_Derived.class b/unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric_Derived.class
new file mode 100644
index 0000000000000000000000000000000000000000..ac48e62ea346ff0fbb8f3deb5267c6a542aabcae
GIT binary patch
literal 366
zcmX^0Z`VEs1_l!bAua}H27Y!10d@vKMg}&U%)HDJJ4Oa(4b3n{1{UZ1lvG9rexJ;|
zRKL>Pq|~C2#H1Xch>%Zya$-(cVo@fD4;5r7$;d2bWRUU+N=+^;D$XoRbx+MpEy_%e
zcL9=RsVUZs44lE4>3NAIrA0tP^e`0KV2HrA+5t6l1?QI*C8xS&f}9|W%ND(?#Ii&l
z1{MZZMg|F7iWnIL(4`m@7?^-z0RoIb4Ac*#*?=s4APo{>)!NR$xDm);Vqgc7Y+yk~
Z1`Z&b2cm$1lYt8?&kZJd7<j=n9{`N5Sls{s

literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric_Derived.java b/unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric_Derived.java
new file mode 100644
index 00000000000..4415ac9e038
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/RecursiveGeneric_Derived.java
@@ -0,0 +1,4 @@
+class RecursiveGeneric_Derived extends RecursiveGeneric<RecursiveGeneric_Derived>
+{
+
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/SimpleGeneric.class b/unit/java_bytecode/java_bytecode_parse_generics/SimpleGeneric.class
deleted file mode 100644
index 6ade3945c8dcc42a39eb17ae583b8b026e8b582b..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 698
zcmZuuT}uK%6g{J^U#)3o_Wc39s6oE;R3b!BFH#RKL674$*wnhlwif-XdI+JQAJC7A
z&S(~!F>vSJbI-Z=&fJgB*LMJW*v!JhY6@#v#ITy7Sx;d@K!gIt*0sEsbx-=;`dQ~%
zx#598rmefa3<rS{h&v9EWJCKpY%;7=&jk`k{Y&QZE$yq*L9e3%M|M0S#a7>y-nk64
ziNC=_c%|<QyRCb-o;p#!3bf0r<tY2{cA_XnsSVE1B!8wSZzghq?aK7*)u@mf>t1>T
zPG<S)q3sCN8_xc;u32G=KjKN(%KwV#A_CcVe-OCpSdac9^4wkX&o;7{5y(X{Hj+pQ
z6#gy(Tilez4RTY4LYrn3gV`WVB_cMx!x00pYD0);0&(PMlZ1_UmewBm7V;=Cnu{Ps
zMj6bb#ImMbm$zw<e?#nIh<IzK_JYLD6QOb8S>E70X`URVra^fu!2)p*PZ24wscH3_
W%lzbu%#B~ONafgD!ZPzQtb75|or~-M

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/SimpleGeneric.java b/unit/java_bytecode/java_bytecode_parse_generics/SimpleGeneric.java
deleted file mode 100644
index 6db3d7bacbe..00000000000
--- a/unit/java_bytecode/java_bytecode_parse_generics/SimpleGeneric.java
+++ /dev/null
@@ -1,11 +0,0 @@
-class SimpleGeneric<T>
-{
-  public T t;
-
-  public static <T> SimpleGeneric<T> makeGeneric(T value)
-  {
-    SimpleGeneric<T> newST = new SimpleGeneric<T>();
-    newST.t = value;
-    return newST;
-  }
-}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/SimpleRecursiveGeneric.class b/unit/java_bytecode/java_bytecode_parse_generics/SimpleRecursiveGeneric.class
deleted file mode 100644
index 3ca52a2b92bb9bad327aa21a9a261425248ee460..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 466
zcmaJ-!AiqG5Ph4ZiH*_LszngNqk6ChJ=G8pK`%kUgx)uCsaw)b*=`DcmZyRTKfsR?
zC$%0b)yvL%Z)V=i&d2B5JAg}cec0Ibu;*c)ff<H_IFaK?As$6u>8YHFJE4S@`4vMm
zkwe8zr3HhXrlh!`RMJF5PfiC6&Q1A5xmGNdxUa^U&?(OfQaW*&^J2iYtoc%O%(I*_
zbXRjPlb`(2ADe_UI-=nhVcP$<B#K9T#(M=<!`?$S61kx+KPfAni(6Umb-4bo=XGCz
z4K!)J^(74L-{v@mMb`xAkZ{nT*Cl4bBZS(GqEG0WVy!gJ=3uV`Y;4l&E<}caaPVD#
UEwTZ&SCkepYiZra&VqHm0Mw6cdjJ3c

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/SimpleRecursiveGeneric.java b/unit/java_bytecode/java_bytecode_parse_generics/SimpleRecursiveGeneric.java
deleted file mode 100644
index e95851602da..00000000000
--- a/unit/java_bytecode/java_bytecode_parse_generics/SimpleRecursiveGeneric.java
+++ /dev/null
@@ -1,4 +0,0 @@
-class SimpleRecursiveGeneric<T extends SimpleRecursiveGeneric<T>>
-{
-  public T t;
-}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.class b/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.class
index bf78c910d1974ca2d3852501272b2636dd7fe16e..ef45a36d928a3e75c9691ad0ee45e1f878f2329b 100644
GIT binary patch
delta 653
zcmcaC@KA6A2csyDhL3w{UTRThvbAOyBLiavBLk<;WKBk8CLW*3A&i>L{2D%!+Zc`2
z#bN4fw0%7DN>Yo`5|dM{?W`FYq~JyXr6zx4H1JcyrZ(O)w;(4qH#M&$u_QA;53E%a
zSu5OBG?kOXn3U?(;3};V)}tu|`+zO6xHvOC59lo1>KGXiF4V=X4CFayh`m<80J6cW
z6sIwhZ!x(=slr19r#f(e=n_^J?*fdiveXo?dRd>zQOvDroba&YVTfReWMq(l3!sG&
zBLh1$zIhmw7?gP!R2ZUo7_=Fb85tCC>4Dj}S&rotBP%z990Skfx2)x?f($YYLX$Ju
z5?Cb}SQ(@ypJUr&sKLO&pvl0?pv54_paYcGWl(3(1DbEZV9a31V8>v@;0a{;GMF)h
PGMF<YFj!39%{~JFa9GPr

delta 510
zcmaDTcv)Zr2cx2phEH&2Zb43}dum>4QD(BWW*8#_V+A7vKU93OETb}q5RBu*sL3e`
z(=s`a(b!fARlkk4k5giCX0m5qNorAAVsfgroi!taDohL17MQBZCm0P3#4${8%g+aE
zlfu*nl$z|uq?9C%CS~md(gbomTVio>W_lhY11ngFkpbO&U9dRFS@LLx*ubPfDkdv3
zyIF~$xecxrL&7Ps2<&EMSWq2gZnft_4GSKI2!=>T24<k?j10Ue;m*UL#GuT>pu!Nv
z!=TNe3{(U(aPu0LQ;e)!3~~(IldIXvS@{`c7z8GNXG>reV_;<vpB%%!$554lgF%gf
umqDFDkU<kDuLWdj1EDU1F@qk19fLlDCxZclFOV0?V8W2VU^>~8V+H`}l8!V0

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.java b/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.java
index 29ad10e2e25..578a8b2f8c6 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.java
@@ -1,54 +1,57 @@
 public class WildcardGenericFunctions
 {
   // Test a wild card generic type
-  public static void processSimpleGeneric(SimpleGeneric<?> x) {
+  public static void processSimpleGeneric(Generic<?> x) {
     assert(x.t.equals(null));
   }
 
   // Test a wildcard generic bound by an interface
-  public static void processUpperBoundInterfaceGeneric(SimpleGeneric<? extends BasicInterface> x) {
+  public static void processUpperBoundInterfaceGeneric(Generic<? extends
+  Interface> x) {
     assert(x.t.getX() == 4);
   }
 
   // Test a wild card generic bound by a class
-  public static void processUpperBoundClassGeneric(SimpleGeneric<? extends Foo> x) {
+  public static void processUpperBoundClassGeneric(Generic<? extends
+  Interface_Implementation> x) {
     assert(x.t.getX() == 4);
   }
 
-  // It isn't legal to have an wild card with two upper bounds
+  // It isn't legal to have a wild card with two upper bounds
   // Per language spec on intersection types
 
-  public static void processLowerBoundGeneric(SimpleGeneric<? super Foo> x, Foo assign) {
+  public static void processLowerBoundGeneric(Generic<? super
+  Interface_Implementation> x, Interface_Implementation assign) {
     x.t = assign;
   }
 
   // It is not legal Java to specify both an upper and lower bound
-  // public static void processBoundSuperClassGeneric(SimpleGeneric<? extends Object super Foo> x, Foo assign) {
+  // public static void processBoundSuperClassGeneric(Generic<? extends Object super Interface_Implementation> x, Interface_Implementation assign) {
   //   x.t = assign;
   // }
 
   // Test a wild card generic bound by a class
-  // public static void processBoundClassGenericDoubleBound(SimpleGeneric<? extends Foo & BasicInterface> x) {
+  // public static void processBoundClassGenericDoubleBound(Generic<? extends Interface_Implementation & Interface> x) {
   //   assert(x.t.getX() == 4);
   // }
 
   public static void test()
   {
-    SimpleGeneric<Foo> myGenericValue = new SimpleGeneric<Foo>();
+    Generic<Interface_Implementation> myGenericValue = new Generic<Interface_Implementation>();
     myGenericValue.t = null;
     processSimpleGeneric(myGenericValue);
 
-    myGenericValue.t = new Foo();
+    myGenericValue.t = new Interface_Implementation();
     myGenericValue.t.x = 4;
     processUpperBoundInterfaceGeneric(myGenericValue);
 
-    SimpleGeneric<Bar> anotherGenericValue = new SimpleGeneric<Bar>();
-    anotherGenericValue.t = new Bar();
+    Generic<Interface_Implementation_Derived> anotherGenericValue = new Generic<Interface_Implementation_Derived>();
+    anotherGenericValue.t = new Interface_Implementation_Derived();
     anotherGenericValue.t.x = 4;
     processUpperBoundClassGeneric(anotherGenericValue);
 
 
-    SimpleGeneric<Object> baseGenericValue = new SimpleGeneric<Object>();
-    processLowerBoundGeneric(baseGenericValue, new Foo());
+    Generic<Object> baseGenericValue = new Generic<Object>();
+    processLowerBoundGeneric(baseGenericValue, new Interface_Implementation());
   }
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/generics05$igeneric05.class b/unit/java_bytecode/java_bytecode_parse_generics/generics05$igeneric05.class
deleted file mode 100644
index 179141a38e28b24502ec84b87aeb9cb023cdafb4..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 856
zcmZuwO>fgc6r9axV_YXBv_OH<(g1D{O%C)zqg*P1kRm{;<@+Wq=~l);&WFU$LZU+A
zzz^U@A?7&=2_y&G`}WPwyxI5s>-UeJ0AAp@gghQPDBwU=hb271Q4#eb9xLR+sg4w?
z-77uS%}B?C=DXgN>5tD8N*8tz>+vKp3fUm!PGNj$NA;G%PIq8pli2>KxmdJL1<<y!
z9d{J&_!|+&Atld;AIMnl+St6EeCnAb(7lK|)$XvbqfjSS;`wGyBo!Px*J+(9xNl;L
zpGSH$GRz%plBzEcu&&*IslR+)&_CaFwjBg#^xHXEa<nBTQO>?LG5!1N7bf1+ly~40
zD}mn*U#`PC>sz#UF`OiQ^UBISl$Td}B5iST1Fnm0JaJLPRuNBK_}Eg|UjSE{u;N>x
z@_$#^NMA~;Z8%AD0fzyH9FhVjC&Pzw;2@-tQ>jQH=~}TGkC`%~_e2WTX*|1zYJ5lL
zE2Atbd>4oTkvI9?ouN?04kO}IHui>VH^n*3-Dbq`!Cj(-{o|b76ZUN58<e_6ZmHl=
z3FOc7>^5pEO5R^34|}N(QJPgDIZ=|@_E^cn<2|y?+}_6nW;58wEq(=&=YLa!`U5k_
BtSJBh

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
index 66e89cddb12..d01e79b7eaf 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
@@ -31,7 +31,7 @@ SCENARIO(
   THEN("There should be a symbol for processSimpleGeneric")
   {
     const std::string func_name=".processSimpleGeneric";
-    const std::string func_descriptor=":(LSimpleGeneric;)V";
+    const std::string func_descriptor = ":(LGeneric;)V";
     const std::string process_func_name=class_prefix+func_name+func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
@@ -40,7 +40,7 @@ SCENARIO(
   THEN("There should be a symbol for processUpperBoundInterfaceGeneric")
   {
     const std::string func_name=".processUpperBoundInterfaceGeneric";
-    const std::string func_descriptor=":(LSimpleGeneric;)V";
+    const std::string func_descriptor = ":(LGeneric;)V";
     const std::string process_func_name=class_prefix+func_name+func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
@@ -49,7 +49,7 @@ SCENARIO(
   THEN("There should be a symbol for processUpperBoundClassGeneric")
   {
     const std::string func_name=".processUpperBoundClassGeneric";
-    const std::string func_descriptor=":(LSimpleGeneric;)V";
+    const std::string func_descriptor = ":(LGeneric;)V";
     const std::string process_func_name=class_prefix+func_name+func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
@@ -58,7 +58,7 @@ SCENARIO(
   THEN("There should be a symbol for processDoubleUpperBoundClassGeneric")
   {
     const std::string func_name=".processDoubleUpperBoundClassGeneric";
-    const std::string func_descriptor=":(LSimpleGeneric;)V";
+    const std::string func_descriptor = ":(LGeneric;)V";
     const std::string process_func_name=class_prefix+func_name+func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
@@ -67,7 +67,7 @@ SCENARIO(
   THEN("There should be a symbol for processDoubleUpperBoundInterfaceGeneric")
   {
     const std::string func_name=".processDoubleUpperBoundInterfaceGeneric";
-    const std::string func_descriptor=":(LSimpleGeneric;)V";
+    const std::string func_descriptor = ":(LGeneric;)V";
     const std::string process_func_name=class_prefix+func_name+func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
index b596572252c..b1e925665d5 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
@@ -32,7 +32,7 @@ SCENARIO(
   THEN("There should be a symbol for processSimpleGeneric")
   {
     const std::string func_name=".processSimpleGeneric";
-    const std::string func_descriptor=":(LSimpleGeneric;)V";
+    const std::string func_descriptor = ":(LGeneric;)V";
     const std::string process_func_name=class_prefix+func_name+func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
@@ -41,7 +41,7 @@ SCENARIO(
   THEN("There should be a symbol for processUpperBoundInterfaceGeneric")
   {
     const std::string func_name=".processUpperBoundInterfaceGeneric";
-    const std::string func_descriptor=":(LSimpleGeneric;)V";
+    const std::string func_descriptor = ":(LGeneric;)V";
     const std::string process_func_name=class_prefix+func_name+func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
@@ -50,7 +50,7 @@ SCENARIO(
   THEN("There should be a symbol for processUpperBoundClassGeneric")
   {
     const std::string func_name=".processUpperBoundClassGeneric";
-    const std::string func_descriptor=":(LSimpleGeneric;)V";
+    const std::string func_descriptor = ":(LGeneric;)V";
     const std::string process_func_name=class_prefix+func_name+func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
@@ -59,7 +59,8 @@ SCENARIO(
   THEN("There should be a symbol for processLowerBoundGeneric")
   {
     const std::string func_name=".processLowerBoundGeneric";
-    const std::string func_descriptor=":(LSimpleGeneric;LFoo;)V";
+    const std::string func_descriptor =
+      ":(LGeneric;LInterface_Implementation;)V";
     const std::string process_func_name=class_prefix+func_name+func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
index 40288e62cc4..c1dbe040d0c 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
@@ -43,7 +43,7 @@ SCENARIO(
          " descriptor")
   {
     const std::string func_name=".<init>";
-    const std::string func_descriptor=":(LOuter;LAbstractGenericClass;)V";
+    const std::string func_descriptor = ":(LOuter;LAbstractGeneric;)V";
     const std::string process_func_name=
       inner_prefix+func_name+func_descriptor;
     REQUIRE(new_symbol_table.has_symbol(process_func_name));

From 707ebf6d2dfd2234581034128ee78130251a4029 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Mon, 23 Oct 2017 10:00:22 +0100
Subject: [PATCH 02/22] Cleaning existing unit tests

---
 .../GenericArray.class                        | Bin 492 -> 438 bytes
 .../GenericArray.java                         |   2 -
 .../GenericFunctions.class                    | Bin 1772 -> 1187 bytes
 .../GenericFunctions.java                     |  25 ++++---
 .../Outer$Inner.class                         | Bin 598 -> 0 bytes
 .../Outer$InnerEnum.class                     | Bin 848 -> 0 bytes
 .../java_bytecode_parse_generics/Outer.class  | Bin 458 -> 0 bytes
 .../SignatureDescriptorMismatch$Inner.class   | Bin 0 -> 752 bytes
 ...ignatureDescriptorMismatch$InnerEnum.class | Bin 0 -> 1024 bytes
 .../SignatureDescriptorMismatch.class         | Bin 0 -> 590 bytes
 ....java => SignatureDescriptorMismatch.java} |   2 +-
 .../WildcardGenericFunctions.class            | Bin 2273 -> 1188 bytes
 .../WildcardGenericFunctions.java             |  63 ++++++++----------
 .../parse_derived_generic_class.cpp           |  14 ++--
 .../parse_generic_array_class.cpp             |  28 ++++----
 .../parse_signature_descriptor_mismatch.cpp   |  22 +++---
 16 files changed, 73 insertions(+), 83 deletions(-)
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Outer$Inner.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Outer$InnerEnum.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/Outer.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch$Inner.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch$InnerEnum.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch.class
 rename unit/java_bytecode/java_bytecode_parse_generics/{Outer.java => SignatureDescriptorMismatch.java} (79%)

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.class
index 1b69af949acd90d0dfd5bf256db990b6e643f4d1..e46b7d90e4081f3cdba0c89dc0a2a052c03798bb 100644
GIT binary patch
delta 157
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zNU{NyGBL0NSquz7Ss={?WH|z9kO-^Rb_T|cKn61dH;`ll3o<hB0NFec1q{3ld_W#Q
SiiiM^#{@N6kU<E{69xbe?hL5_

delta 193
zcmdnS{DxWd)W2Q(7#J8#7^Jxvm>DG486?>mq$Y~$t1x*cGBSun`(!1SCF<uS=B4X<
z=9Q$TrxsZ=GB9NV<(Q&9CpukX=3(HSEY7H{%gn&Yz{0=^B-w!GF)^?MSsV<UKsF--
z7Xvq#W?%rS2J-nP$1{pK@&m=#fIN^20U*f(X0tK~G6(^A!YCplKpqp+WKjk&Fi#u+
DDG(K-

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.java b/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.java
index 98cf9333743..53dc4b81b3c 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.java
@@ -1,6 +1,4 @@
 class GenericArray<T>
 {
   public T [] t;
-  public Integer [] Ia;
-  public int [] ia;
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.class
index 964cf0b91984c508a3f086ca96669362af32bfc5..ef35fd9b89f36c418b60fb9190b5dbcda27ecab2 100644
GIT binary patch
literal 1187
zcmb7?OHaZ;5XWbE3L+?q;scd<06j=zJW=EzMq@(s0CFWuS#eF-HhmcVSe{Hg_yPP-
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literal 1772
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BXb1oR

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java b/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java
index be30b40cb7a..323f14d4f0d 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java
@@ -1,26 +1,31 @@
 public class GenericFunctions
 {
-  public static <T> void processSimpleGeneric(Generic<T> x) {
-    assert(x.t==null);
+  public static <T> void processSimpleGeneric(Generic<T> x)
+  {
+
   }
 
   // Test a wildcard generic bound by an interface
-  public static <T extends Interface> void processUpperBoundInterfaceGeneric(Generic<T> x) {
-    assert(x.t.getX() == 4);
+  public static <T extends Interface> void processUpperBoundInterfaceGeneric(Generic<T> x)
+  {
+
   }
 
   // Test a wild card generic bound by a class
-  public static <T extends Interface_Implementation> void processUpperBoundClassGeneric(Generic<T> x) {
-    assert(x.t.getX() == 4);
+  public static <T extends Interface_Implementation> void processUpperBoundClassGeneric(Generic<T> x)
+  {
+
   }
 
   // Test a wild card generic bound by a class and an interface
-  public static <T extends Interface_Implementation & Interface> void processDoubleUpperBoundClassGeneric(Generic<T> x) {
-    assert(x.t.getX() == 4);
+  public static <T extends Interface_Implementation & Interface> void processDoubleUpperBoundClassGeneric(Generic<T> x)
+  {
+
   }
 
   // Test a wild card generic bound by two interfaces
-  public static <T extends Interface & Interface_Copy> void processDoubleUpperBoundInterfaceGeneric(Generic<T> x) {
-      assert(x.t.getX() == 4);
+  public static <T extends Interface & Interface_Copy> void processDoubleUpperBoundInterfaceGeneric(Generic<T> x)
+  {
+      
   }
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Outer$Inner.class b/unit/java_bytecode/java_bytecode_parse_generics/Outer$Inner.class
deleted file mode 100644
index 0e8a92206dec18952baf1985cdd098dff305cb19..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 598
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Outer$InnerEnum.class b/unit/java_bytecode/java_bytecode_parse_generics/Outer$InnerEnum.class
deleted file mode 100644
index a7256d80c2aafa8fffeb0263546b0b266fcc5dab..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 848
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Outer.class b/unit/java_bytecode/java_bytecode_parse_generics/Outer.class
deleted file mode 100644
index 84a9daeeae458c31cca6e8115bb245d5d95e67ac..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 458
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch$Inner.class b/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch$Inner.class
new file mode 100644
index 0000000000000000000000000000000000000000..b7dcb3d5421e08a75ad7be19ebded76754a05778
GIT binary patch
literal 752
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literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch$InnerEnum.class b/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch$InnerEnum.class
new file mode 100644
index 0000000000000000000000000000000000000000..82139a88405eb5794627a0b7afac560286afb093
GIT binary patch
literal 1024
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literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch.class b/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch.class
new file mode 100644
index 0000000000000000000000000000000000000000..84c586fddfa7c988763892a91ae15df6ee4b85ce
GIT binary patch
literal 590
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literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Outer.java b/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch.java
similarity index 79%
rename from unit/java_bytecode/java_bytecode_parse_generics/Outer.java
rename to unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch.java
index dcd7ac5bf1f..314d2645889 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/Outer.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch.java
@@ -1,4 +1,4 @@
-public class Outer<T>
+public class SignatureDescriptorMismatch<T>
 {
   private class Inner
   {
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.class b/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.class
index ef45a36d928a3e75c9691ad0ee45e1f878f2329b..51f199d2bda1b559c28d996db97c1335393ea1b7 100644
GIT binary patch
literal 1188
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.java b/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.java
index 578a8b2f8c6..6d68ab25e17 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/WildcardGenericFunctions.java
@@ -1,57 +1,48 @@
 public class WildcardGenericFunctions
 {
   // Test a wild card generic type
-  public static void processSimpleGeneric(Generic<?> x) {
-    assert(x.t.equals(null));
+  public static void processSimpleGeneric(Generic<?> x)
+  {
+
   }
 
   // Test a wildcard generic bound by an interface
-  public static void processUpperBoundInterfaceGeneric(Generic<? extends
-  Interface> x) {
-    assert(x.t.getX() == 4);
+  public static void processUpperBoundInterfaceGeneric(
+    Generic<? extends Interface> x)
+  {
+
   }
 
   // Test a wild card generic bound by a class
-  public static void processUpperBoundClassGeneric(Generic<? extends
-  Interface_Implementation> x) {
-    assert(x.t.getX() == 4);
+  public static void processUpperBoundClassGeneric(
+    Generic<? extends Interface_Implementation> x)
+  {
+
   }
 
   // It isn't legal to have a wild card with two upper bounds
   // Per language spec on intersection types
 
-  public static void processLowerBoundGeneric(Generic<? super
-  Interface_Implementation> x, Interface_Implementation assign) {
-    x.t = assign;
+  public static void processLowerBoundGeneric(
+    Generic<? super Interface_Implementation> x,
+    Interface_Implementation assign)
+  {
+
   }
 
   // It is not legal Java to specify both an upper and lower bound
-  // public static void processBoundSuperClassGeneric(Generic<? extends Object super Interface_Implementation> x, Interface_Implementation assign) {
-  //   x.t = assign;
+  // public static void processBoundSuperClassGeneric(
+  //   Generic<? extends Object super Interface_Implementation> x,
+  //   Interface_Implementation assign)
+  // {
+  //
   // }
 
-  // Test a wild card generic bound by a class
-  // public static void processBoundClassGenericDoubleBound(Generic<? extends Interface_Implementation & Interface> x) {
-  //   assert(x.t.getX() == 4);
+  // It is not legal Java to specify two upper bounds
+  // Test a wild card generic bound by a class and an interface
+  // public static void processBoundClassGenericDoubleBound(
+  //   Generic<? extends Interface_Implementation & Interface> x)
+  // {
+  //
   // }
-
-  public static void test()
-  {
-    Generic<Interface_Implementation> myGenericValue = new Generic<Interface_Implementation>();
-    myGenericValue.t = null;
-    processSimpleGeneric(myGenericValue);
-
-    myGenericValue.t = new Interface_Implementation();
-    myGenericValue.t.x = 4;
-    processUpperBoundInterfaceGeneric(myGenericValue);
-
-    Generic<Interface_Implementation_Derived> anotherGenericValue = new Generic<Interface_Implementation_Derived>();
-    anotherGenericValue.t = new Interface_Implementation_Derived();
-    anotherGenericValue.t.x = 4;
-    processUpperBoundClassGeneric(anotherGenericValue);
-
-
-    Generic<Object> baseGenericValue = new Generic<Object>();
-    processLowerBoundGeneric(baseGenericValue, new Interface_Implementation());
-  }
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
index c0826e63cd0..0884ef9cb88 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
@@ -23,18 +23,16 @@ SCENARIO(
   "java_bytecode_parse_derived_generic_class",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
-  const symbol_tablet &new_symbol_table=
-    load_java_class(
-      "DerivedGeneric",
-      "./java_bytecode/java_bytecode_parse_generics");
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "DerivedGeneric", "./java_bytecode/java_bytecode_parse_generics");
 
-  THEN("There should be a symbol for the DerivedGenreic class")
+  THEN("There should be a symbol for the DerivedGeneric class")
   {
-    std::string class_prefix="java::DerivedGeneric";
+    std::string class_prefix = "java::DerivedGeneric";
     REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
-    const symbolt &derived_symbol=new_symbol_table.lookup_ref(class_prefix);
-    const class_typet &derived_class_type=
+    const symbolt &derived_symbol = new_symbol_table.lookup_ref(class_prefix);
+    const class_typet &derived_class_type =
       require_symbol::require_complete_class(derived_symbol);
 
     // TODO(tkiley): Currently we do not support extracting information
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
index 6060c33c906..70fe6085448 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
@@ -23,42 +23,38 @@ SCENARIO(
   "java_bytecode_parse_generic_array_class",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
-  const symbol_tablet &new_symbol_table=
-    load_java_class("GenericArray", ""
-      "./java_bytecode/java_bytecode_parse_generics");
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "GenericArray", "./java_bytecode/java_bytecode_parse_generics");
 
-  std::string class_prefix="java::GenericArray";
+  std::string class_prefix = "java::GenericArray";
 
   REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
-  const struct_typet &type=to_struct_type(
-    new_symbol_table.lookup_ref(class_prefix).type);
+  const struct_typet &type =
+    to_struct_type(new_symbol_table.lookup_ref(class_prefix).type);
 
   THEN("There should be a component with name t")
   {
     REQUIRE(type.has_component("t"));
   }
 
-  const pointer_typet &t_component=to_pointer_type(
-    type.get_component("t")
-      .type());
-  const symbol_typet &subtype=to_symbol_type(t_component.subtype());
-
+  const pointer_typet &t_component =
+    to_pointer_type(type.get_component("t").type());
+  const symbol_typet &subtype = to_symbol_type(t_component.subtype());
   THEN("The t component is a valid java array")
   {
-    const struct_typet &subtype_type=to_struct_type(
+    const struct_typet &subtype_type = to_struct_type(
       new_symbol_table.lookup_ref(subtype.get_identifier()).type);
     REQUIRE(is_valid_java_array(subtype_type));
   }
 
   THEN("The elements of the t component have the parametric type T")
   {
-    const typet &element=static_cast<const typet &>(subtype.find(
-      ID_C_element_type));
+    const typet &element =
+      static_cast<const typet &>(subtype.find(ID_C_element_type));
     REQUIRE(is_java_generic_parameter(element));
-
     REQUIRE(
-      to_java_generic_parameter(element).type_variable().get_identifier()==
+      to_java_generic_parameter(element).type_variable().get_identifier() ==
       "java::GenericArray::T");
   }
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
index c1dbe040d0c..60560ec1446 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
@@ -21,12 +21,11 @@ SCENARIO(
   "java_bytecode_parse_signature_descriptor_mismatch",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
-  const symbol_tablet &new_symbol_table=
-    load_java_class(
-      "Outer",
-      "./java_bytecode/java_bytecode_parse_generics");
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "SignatureDescriptorMismatch",
+    "./java_bytecode/java_bytecode_parse_generics");
 
-  const std::string class_prefix="java::Outer";
+  const std::string class_prefix = "java::SignatureDescriptorMismatch";
   REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
   const std::string inner_prefix=class_prefix+"$Inner";
@@ -39,11 +38,13 @@ SCENARIO(
       require_symbol::require_complete_class(inner_symbol);
   }
 
-  THEN("There is a symbol for the constructor of the inner class with correct"
-         " descriptor")
+  THEN(
+    "There is a symbol for the constructor of the class Inner with "
+    "the correct number of parameters")
   {
     const std::string func_name=".<init>";
-    const std::string func_descriptor = ":(LOuter;LAbstractGeneric;)V";
+    const std::string func_descriptor =
+      ":(LSignatureDescriptorMismatch;LAbstractGeneric;)V";
     const std::string process_func_name=
       inner_prefix+func_name+func_descriptor;
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
@@ -64,8 +65,9 @@ SCENARIO(
       require_symbol::require_complete_class(inner_enum_symbol);
   }
 
-  THEN("There is a symbol for the constructor of the inner enum with correct"
-         " number of parameters")
+  THEN(
+    "There is a symbol for the constructor of the inner enum with the "
+    "correct number of parameters")
   {
     const std::string func_name=".<init>";
     const std::string func_descriptor=":(Ljava/lang/String;I)V";

From d3ff11c2061d424e795f13d7bab633492dcdc7bd Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Thu, 2 Nov 2017 10:28:57 +0000
Subject: [PATCH 03/22] Adding a utility for checking java generic class

---
 unit/testing-utils/require_type.cpp | 12 ++++++++++++
 unit/testing-utils/require_type.h   |  3 +++
 2 files changed, 15 insertions(+)

diff --git a/unit/testing-utils/require_type.cpp b/unit/testing-utils/require_type.cpp
index 9d8233a52d8..de896e90e63 100644
--- a/unit/testing-utils/require_type.cpp
+++ b/unit/testing-utils/require_type.cpp
@@ -201,3 +201,15 @@ const typet &require_type::require_java_non_generic_type(
     REQUIRE(type.subtype()==expect_subtype.value());
   return type;
 }
+
+/// Verify that a class is a valid java generic class
+/// \param class_type: the class
+/// \return: A reference to the java generic class type.
+java_generics_class_typet &
+require_type::require_java_generic_class(const class_typet &class_type)
+{
+  java_class_typet java_class_type = to_java_class_type(class_type);
+
+  REQUIRE(is_java_generics_class_type(java_class_type));
+  return to_java_generics_class_type(java_class_type);
+}
diff --git a/unit/testing-utils/require_type.h b/unit/testing-utils/require_type.h
index 215f5335cf0..25466433513 100644
--- a/unit/testing-utils/require_type.h
+++ b/unit/testing-utils/require_type.h
@@ -62,6 +62,9 @@ java_generic_parametert require_java_generic_parameter(
 const typet &require_java_non_generic_type(
   const typet &type,
   const optionalt<symbol_typet> &expect_subtype);
+
+java_generics_class_typet &
+require_java_generic_class(const class_typet &class_type);
 }
 
 #endif // CPROVER_TESTING_UTILS_REQUIRE_TYPE_H

From c5b06e6cfc665e023cc871ed90e8e5ab5d3967ce Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Mon, 23 Oct 2017 12:39:05 +0100
Subject: [PATCH 04/22] Breaking the old parse_generic_class into two unit
 tests

A unit test for inner classes and a unit test for a basic generic class
---
 .../GenericInnerClasses$BoundedInner.class    | Bin 0 -> 676 bytes
 ...nericInnerClasses$DoubleBoundedInner.class | Bin 0 -> 706 bytes
 .../GenericInnerClasses$Inner.class           | Bin 0 -> 642 bytes
 .../GenericInnerClasses$TwoElementInner.class | Bin 0 -> 728 bytes
 .../GenericInnerClasses.class                 | Bin 0 -> 684 bytes
 .../GenericInnerClasses.java                  |  25 ++
 .../generics$bound_element.class              | Bin 892 -> 0 bytes
 .../generics$double_bound_element.class       | Bin 705 -> 0 bytes
 .../generics$dummyInterface.class             | Bin 195 -> 0 bytes
 .../generics$element.class                    | Bin 573 -> 0 bytes
 .../generics$two_elements.class               | Bin 639 -> 0 bytes
 .../generics.class                            | Bin 1202 -> 0 bytes
 .../generics.java                             |  59 ----
 .../parse_generic_class.cpp                   | 307 ++----------------
 .../parse_generic_inner_classes.cpp           | 231 +++++++++++++
 15 files changed, 279 insertions(+), 343 deletions(-)
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$BoundedInner.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$DoubleBoundedInner.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$Inner.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$TwoElementInner.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.java
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/generics$bound_element.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/generics$double_bound_element.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/generics$dummyInterface.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/generics$element.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/generics$two_elements.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/generics.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/generics.java
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/parse_generic_inner_classes.cpp

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$BoundedInner.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$BoundedInner.class
new file mode 100644
index 0000000000000000000000000000000000000000..3b2d92f4c890ccfebfcf3e2040955ca2cc83ae7f
GIT binary patch
literal 676
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literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$DoubleBoundedInner.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$DoubleBoundedInner.class
new file mode 100644
index 0000000000000000000000000000000000000000..735fcd8b8d25534dd7320a8b9b30130893fc4bd7
GIT binary patch
literal 706
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$Inner.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$Inner.class
new file mode 100644
index 0000000000000000000000000000000000000000..1162357e0daed77e1d2c3851677ede6a739a5a77
GIT binary patch
literal 642
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$TwoElementInner.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$TwoElementInner.class
new file mode 100644
index 0000000000000000000000000000000000000000..459f8c95fb65b484706793d8cff5628c86dff778
GIT binary patch
literal 728
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literal 0
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.class
new file mode 100644
index 0000000000000000000000000000000000000000..e571308bb34d76427a77e5bc5d6b545a01cdccf3
GIT binary patch
literal 684
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literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.java b/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.java
new file mode 100644
index 00000000000..e8d4d5e7cd7
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.java
@@ -0,0 +1,25 @@
+public class GenericInnerClasses
+{
+  class Inner<E>
+  {
+    E elem;
+  }
+
+  class BoundedInner<NUM extends java.lang.Number>
+  {
+    NUM elem;
+  }
+
+  BoundedInner<Integer> belem;
+
+  class DoubleBoundedInner<T extends java.lang.Number & Interface>
+  {
+    T elem;
+  }
+
+  class TwoElementInner<K, V>
+  {
+    K k;
+    V v;
+  }
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/generics$bound_element.class b/unit/java_bytecode/java_bytecode_parse_generics/generics$bound_element.class
deleted file mode 100644
index ef168d8e34c9af903d9a9ac61f16be5f379ea561..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/generics$double_bound_element.class b/unit/java_bytecode/java_bytecode_parse_generics/generics$double_bound_element.class
deleted file mode 100644
index af550821f2ac6e23893bc73f3f464b0781dc0bc4..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 705
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/generics$dummyInterface.class b/unit/java_bytecode/java_bytecode_parse_generics/generics$dummyInterface.class
deleted file mode 100644
index 20f3e82c81bf8d6853c8693c2e366a323f3bfc78..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/generics$element.class b/unit/java_bytecode/java_bytecode_parse_generics/generics$element.class
deleted file mode 100644
index f1c63b72ddea8d7f270b013401c831b6dcb304c0..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/generics$two_elements.class b/unit/java_bytecode/java_bytecode_parse_generics/generics$two_elements.class
deleted file mode 100644
index 4bbc9b11c6218b44d70098360ca722698cacafe1..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/generics.class b/unit/java_bytecode/java_bytecode_parse_generics/generics.class
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GIT binary patch
literal 0
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/generics.java b/unit/java_bytecode/java_bytecode_parse_generics/generics.java
deleted file mode 100644
index b2e18689158..00000000000
--- a/unit/java_bytecode/java_bytecode_parse_generics/generics.java
+++ /dev/null
@@ -1,59 +0,0 @@
-public class generics {
-
-  interface dummyInterface
-  {
-    int getX();
-  }
-
-  class element<E> {
-    E elem;
-  }
-
-  class bound_element<NUM extends java.lang.Number> {
-    NUM elem;
-    NUM f() {
-      return elem;
-    }
-    void g(NUM e) {
-      elem=e;
-    }
-  }
-
-  class double_bound_element<T extends java.lang.Number & dummyInterface>
-  {
-    T elem;
-  }
-
-// definitely need to do some tests with bounded two elements
-  // the java_generic_type_from_string does not work for complex types
-  // Need to to unblock just get it so it throws when failing rather than wrong
-  class two_elements<K, V>
-  {
-    K k;
-    V v;
-  }
-
-
-
-  public static boolean foo(String s)
-  {
-    if(s.length == 0)
-      return true;
-    return false;
-  }
-
-  bound_element<Integer> belem;
-
-  Integer f(int n) {
-
-    element<Integer> e=new element<>();
-    e.elem=n;
-    bound_element<Integer> be=new bound_element<>();
-    belem=new bound_element<>();
-    be.elem=new Integer(n+1);
-    if(n>0)
-      return e.elem;
-    else
-      return be.elem;
-  }
-}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
index ade836cb549..d2c59edef85 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
@@ -8,6 +8,7 @@
 
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
+#include <testing-utils/require_symbol.h>
 
 #include <istream>
 #include <memory>
@@ -18,305 +19,43 @@
 #include <java_bytecode/java_bytecode_language.h>
 
 SCENARIO(
-  "java_bytecode_parse_generics",
+  "java_bytecode_parse_generic_class",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
-  const symbol_tablet &new_symbol_table=
-    load_java_class("generics", "./java_bytecode/java_bytecode_parse_generics");
+  const symbol_tablet &new_symbol_table =
+    load_java_class("Generic", "./java_bytecode/java_bytecode_parse_generics");
 
-  GIVEN("Some class files with Generics")
-  {
-    WHEN("Parsing a class with type variable")
-    {
-      REQUIRE(new_symbol_table.has_symbol("java::generics$element"));
-      THEN("The symbol type should be generic")
-      {
-        const symbolt &class_symbol=
-          new_symbol_table.lookup_ref("java::generics$element");
-        const typet &symbol_type=class_symbol.type;
-
-        REQUIRE(symbol_type.id()==ID_struct);
-        class_typet class_type=to_class_type(symbol_type);
-        REQUIRE(class_type.is_class());
-        java_class_typet java_class_type=to_java_class_type(class_type);
-        REQUIRE(is_java_generics_class_type(java_class_type));
-        java_generics_class_typet java_generics_class_type=
-          to_java_generics_class_type(java_class_type);
-
-        const struct_union_typet::componentt &elem=
-          java_generics_class_type.get_component("elem");
-        const typet &elem_type=java_class_type.component_type("elem");
-
-        REQUIRE(is_java_generic_parameter(elem_type));
-
-        REQUIRE(java_generics_class_type.generic_types().size()==1);
-        THEN("Type variable is named 'E'")
-        {
-          typet &type_var=java_generics_class_type.generic_types().front();
-          REQUIRE(is_java_generic_parameter(type_var));
-          java_generic_parametert generic_type_var=
-            to_java_generic_parameter(type_var);
-          REQUIRE(
-            generic_type_var.type_variable().get_identifier()==
-            "java::generics$element::E");
-          typet &sub_type=generic_type_var.subtype();
-          REQUIRE(sub_type.id()==ID_symbol);
-          symbol_typet &bound_type=to_symbol_type(sub_type);
-          REQUIRE(bound_type.get_identifier()=="java::java.lang.Object");
-        }
-      }
-    }
-  }
-
-  GIVEN("Some class files with generic type variable")
-  {
-    WHEN("Parsing a class with bounded type variable")
-    {
-      REQUIRE(new_symbol_table.has_symbol("java::generics$bound_element"));
-      THEN("The symbol type should be generic")
-      {
-        const symbolt &class_symbol=
-          new_symbol_table.lookup_ref("java::generics$bound_element");
-        const typet &symbol_type=class_symbol.type;
-
-        REQUIRE(symbol_type.id()==ID_struct);
-        class_typet class_type=to_class_type(symbol_type);
-        REQUIRE(class_type.is_class());
-        java_class_typet java_class_type=to_java_class_type(class_type);
-        REQUIRE(is_java_generics_class_type(java_class_type));
-        java_generics_class_typet java_generics_class_type=
-          to_java_generics_class_type(java_class_type);
-        REQUIRE(java_generics_class_type.generic_types().size()==1);
-        typet &type_var=java_generics_class_type.generic_types().front();
-        REQUIRE(is_java_generic_parameter(type_var));
-        java_generic_parametert generic_type_var=
-          to_java_generic_parameter(type_var);
-
-        REQUIRE(
-          generic_type_var.type_variable().get_identifier()==
-          "java::generics$bound_element::NUM");
-        REQUIRE(
-          java_generics_class_type_var(0, java_generics_class_type)==
-          "java::generics$bound_element::NUM");
-        THEN("Bound must be Number")
-        {
-          typet &sub_type=generic_type_var.subtype();
-          REQUIRE(sub_type.id()==ID_symbol);
-          symbol_typet &bound_type=to_symbol_type(sub_type);
-          REQUIRE(bound_type.get_identifier()=="java::java.lang.Number");
-          REQUIRE(
-            to_symbol_type(
-              java_generics_class_type_bound(0, java_generics_class_type))
-            .get_identifier()=="java::java.lang.Number");
-        }
-
-        const struct_union_typet::componentt &elem=
-          java_generics_class_type.get_component("elem");
-        const typet &elem_type=java_class_type.component_type("elem");
-
-        REQUIRE(is_java_generic_parameter(elem_type));
-      }
-    }
-  }
-
-  GIVEN("Some class files with generic type variable")
-  {
-    WHEN("Parsing a class with bounded type variable")
-    {
-      REQUIRE(new_symbol_table.has_symbol("java::generics"));
-
-      THEN("The generic fields should be annotated with concrete types")
-      {
-        const symbolt &class_symbol=
-          new_symbol_table.lookup_ref("java::generics");
-        const typet &symbol_type=class_symbol.type;
-
-        REQUIRE(symbol_type.id()==ID_struct);
-        class_typet class_type=to_class_type(symbol_type);
-        REQUIRE(class_type.is_class());
-        java_class_typet java_class_type=to_java_class_type(class_type);
-        REQUIRE(!is_java_generics_class_type(java_class_type));
-
-        const struct_union_typet::componentt &belem=
-          java_class_type.get_component("belem");
-        const typet &belem_type=java_class_type.component_type("belem");
-
-        REQUIRE(belem_type!=nil_typet());
-        REQUIRE(is_java_generic_type(belem_type));
-        THEN("Field has instantiated type variable")
-        {
-          const java_generic_typet &container=
-            to_java_generic_type(belem_type);
-
-          const std::vector<java_generic_parametert> &generic_types=
-            container.generic_type_variables();
-          REQUIRE(generic_types.size()==1);
-
-          const typet& inst_type=java_generic_get_inst_type(0, container);
+  std::string class_prefix = "java::Generic";
+  REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
-          REQUIRE(inst_type.id()==ID_pointer);
-          const typet &inst_type_symbol=inst_type.subtype();
-          REQUIRE(inst_type_symbol.id()==ID_symbol);
-          REQUIRE(
-            to_symbol_type(inst_type_symbol).get_identifier()==
-            "java::java.lang.Integer");
-        }
-      }
-    }
-  }
-
-  GIVEN("Some class files with Generics")
+  WHEN("Parsing the class")
   {
-    WHEN("Methods with generic signatures")
+    REQUIRE(new_symbol_table.has_symbol(class_prefix));
+    THEN("The class symbol is generic")
     {
-      REQUIRE(
-        new_symbol_table
-          .has_symbol("java::generics$bound_element.f:()Ljava/lang/Number;"));
-
-// TODO: methods should have generic return type (the tests needs to be
-// extended)
-      THEN("The method should have generic return type")
-      {
-        const symbolt &method_symbol=
-          new_symbol_table
-            .lookup_ref("java::generics$bound_element.f:()Ljava/lang/Number;");
-        const typet &symbol_type=method_symbol.type;
-
-        REQUIRE(symbol_type.id()==ID_code);
-
-        const code_typet &code=to_code_type(symbol_type);
-      }
-
-      REQUIRE(
-        new_symbol_table
-          .has_symbol("java::generics$bound_element.g:(Ljava/lang/Number;)V"));
-      THEN("The method should have a generic parameter.")
-      {
-        const symbolt &method_symbol=
-          new_symbol_table
-            .lookup_ref("java::generics$bound_element.g:(Ljava/lang/Number;)V");
-        const typet &symbol_type=method_symbol.type;
+      const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
+      class_typet class_type =
+        require_symbol::require_complete_class(class_symbol);
+      java_class_typet java_class_type = to_java_class_type(class_type);
 
-        REQUIRE(symbol_type.id()==ID_code);
-
-        const code_typet &code=to_code_type(symbol_type);
+      REQUIRE(is_java_generics_class_type(java_class_type));
+      java_generics_class_typet java_generics_class_type =
+        to_java_generics_class_type(java_class_type);
 
-        bool found=false;
-        for(const auto &p : code.parameters())
-        {
-          if(p.get_identifier()==
-             "java::generics$bound_element.g:(Ljava/lang/Number;)V::e")
-          {
-            found=true;
-            const typet &t=p.type();
-            REQUIRE(is_java_generic_parameter(p.type()));
-            const java_generic_parametert &gen_type=
-              to_java_generic_parameter(p.type());
-            const symbol_typet &type_var=gen_type.type_variable();
-            REQUIRE(type_var.get_identifier()==
-                    "java::generics$bound_element::NUM");
-            break;
-          }
-        }
-        REQUIRE(found);
-      }
-    }
-  }
-  GIVEN("A class with multiple bounds")
-  {
-    THEN("The bounds should be encoded")
-    {
-      REQUIRE(
-        new_symbol_table.has_symbol("java::generics$double_bound_element"));
-      THEN("The symbol should have a generic parameter")
+      THEN("The type variable is T")
       {
-        const symbolt &class_symbol=
-          new_symbol_table.lookup_ref("java::generics$double_bound_element");
-        const typet &symbol_type=class_symbol.type;
-
-        REQUIRE(symbol_type.id()==ID_struct);
-        class_typet class_type=to_class_type(symbol_type);
-        REQUIRE(class_type.is_class());
-        java_class_typet java_class_type=to_java_class_type(class_type);
-        REQUIRE_FALSE(is_java_generics_class_type(java_class_type));
-
-        // TODO (tkiley): Extend this unit test when bounds are correctly
-        // parsed.
-#if 0
-        java_generics_class_typet java_generics_class_type=
-          to_java_generics_class_type(java_class_type);
         REQUIRE(java_generics_class_type.generic_types().size()==1);
         typet &type_var=java_generics_class_type.generic_types().front();
         REQUIRE(is_java_generic_parameter(type_var));
         java_generic_parametert generic_type_var=
           to_java_generic_parameter(type_var);
-
-        REQUIRE(
-          generic_type_var.type_variable().get_identifier()==
-          "java::generics$double_bound_element::T");
-        REQUIRE(
-          java_generics_class_type_var(0, java_generics_class_type)==
-          "java::generics$double_bound_element::T");
-        THEN("Bound must be Number and dummyInterface")
-        {
-
-        }
-#endif
-      }
-    }
-  }
-  GIVEN("A class with multiple generic parameters")
-  {
-    THEN("Both generic parameters should be encoded")
-    {
-      const symbolt &class_symbol=
-        new_symbol_table.lookup_ref("java::generics$two_elements");
-      const typet &symbol_type=class_symbol.type;
-
-      REQUIRE(symbol_type.id()==ID_struct);
-      class_typet class_type=to_class_type(symbol_type);
-      REQUIRE(class_type.is_class());
-      java_class_typet java_class_type=to_java_class_type(class_type);
-      REQUIRE(is_java_generics_class_type(java_class_type));
-
-      java_generics_class_typet java_generics_class_type=
-        to_java_generics_class_type(java_class_type);
-      REQUIRE(java_generics_class_type.generic_types().size()==2);
-
-      auto generic_param_iterator=
-        java_generics_class_type.generic_types().cbegin();
-
-      // The first parameter should be called K
-      {
-        const typet &first_param=*generic_param_iterator;
-        REQUIRE(is_java_generic_parameter(first_param));
-        java_generic_parametert generic_type_var=
-          to_java_generic_parameter(first_param);
-
-        REQUIRE(
-          generic_type_var.type_variable().get_identifier()==
-          "java::generics$two_elements::K");
-        REQUIRE(
-          java_generics_class_type_var(0, java_generics_class_type)==
-          "java::generics$two_elements::K");
-      }
-
-      ++generic_param_iterator;
-
-
-      // The second parameter should be called V
-      {
-        const typet &second_param=*generic_param_iterator;
-        REQUIRE(is_java_generic_parameter(second_param));
-        java_generic_parametert generic_type_var=
-          to_java_generic_parameter(second_param);
-
-        REQUIRE(
-          generic_type_var.type_variable().get_identifier()==
-          "java::generics$two_elements::V");
         REQUIRE(
-          java_generics_class_type_var(1, java_generics_class_type)==
-          "java::generics$two_elements::V");
+          generic_type_var.type_variable().get_identifier() ==
+          class_prefix + "::T");
+        typet &sub_type = generic_type_var.subtype();
+        REQUIRE(sub_type.id() == ID_symbol);
+        symbol_typet &bound_type = to_symbol_type(sub_type);
+        REQUIRE(bound_type.get_identifier() == "java::java.lang.Object");
       }
     }
   }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_inner_classes.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_inner_classes.cpp
new file mode 100644
index 00000000000..275a94df4d0
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_inner_classes.cpp
@@ -0,0 +1,231 @@
+/*******************************************************************\
+
+ Module: Unit tests for parsing generic classes
+
+ Author: DiffBlue Limited. All rights reserved.
+
+\*******************************************************************/
+
+#include <testing-utils/catch.hpp>
+#include <testing-utils/load_java_class.h>
+#include <testing-utils/require_symbol.h>
+#include <testing-utils/require_type.h>
+
+#include <istream>
+#include <memory>
+
+#include <util/config.h>
+#include <util/language.h>
+#include <util/message.h>
+#include <java_bytecode/java_bytecode_language.h>
+
+SCENARIO(
+  "java_bytecode_parse_generic_inner_classes",
+  "[core][java_bytecode][java_bytecode_parse_generics]")
+{
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "GenericInnerClasses", "./java_bytecode/java_bytecode_parse_generics");
+
+  std::string class_prefix = "java::GenericInnerClasses";
+  REQUIRE(new_symbol_table.has_symbol(class_prefix));
+
+  WHEN("Parsing an inner class with type variable")
+  {
+    std::string inner_name = class_prefix + "$Inner";
+    REQUIRE(new_symbol_table.has_symbol(inner_name));
+    THEN("The symbol type should be generic")
+    {
+      const symbolt &class_symbol = new_symbol_table.lookup_ref(inner_name);
+      class_typet class_type =
+        require_symbol::require_complete_class(class_symbol);
+      java_generics_class_typet java_generics_class_type =
+        require_type::require_java_generic_class(class_type);
+
+      const typet &elem_type =
+        to_java_class_type(class_type).component_type("elem");
+      REQUIRE(is_java_generic_parameter(elem_type));
+
+      REQUIRE(java_generics_class_type.generic_types().size() == 1);
+      THEN("Type variable is named 'E'")
+      {
+        typet &type_var = java_generics_class_type.generic_types().front();
+        REQUIRE(is_java_generic_parameter(type_var));
+        java_generic_parametert generic_type_var =
+          to_java_generic_parameter(type_var);
+        REQUIRE(
+          generic_type_var.type_variable().get_identifier() ==
+          inner_name + "::E");
+        typet &sub_type = generic_type_var.subtype();
+        REQUIRE(sub_type.id() == ID_symbol);
+        symbol_typet &bound_type = to_symbol_type(sub_type);
+        REQUIRE(bound_type.get_identifier() == "java::java.lang.Object");
+      }
+    }
+  }
+
+  WHEN("Parsing an inner class with bounded type variable")
+  {
+    std::string boundedinner_name = class_prefix + "$BoundedInner";
+    REQUIRE(new_symbol_table.has_symbol(boundedinner_name));
+    THEN("The symbol type should be generic")
+    {
+      const symbolt &class_symbol =
+        new_symbol_table.lookup_ref(boundedinner_name);
+      class_typet class_type =
+        require_symbol::require_complete_class(class_symbol);
+      java_generics_class_typet java_generics_class_type =
+        require_type::require_java_generic_class(class_type);
+
+      REQUIRE(java_generics_class_type.generic_types().size() == 1);
+      typet &type_var = java_generics_class_type.generic_types().front();
+      REQUIRE(is_java_generic_parameter(type_var));
+      java_generic_parametert generic_type_var =
+        to_java_generic_parameter(type_var);
+
+      REQUIRE(
+        generic_type_var.type_variable().get_identifier() ==
+        boundedinner_name + "::NUM");
+      REQUIRE(
+        java_generics_class_type_var(0, java_generics_class_type) ==
+        boundedinner_name + "::NUM");
+      THEN("Bound must be Number")
+      {
+        typet &sub_type = generic_type_var.subtype();
+        REQUIRE(sub_type.id() == ID_symbol);
+        symbol_typet &bound_type = to_symbol_type(sub_type);
+        REQUIRE(bound_type.get_identifier() == "java::java.lang.Number");
+        REQUIRE(
+          to_symbol_type(
+            java_generics_class_type_bound(0, java_generics_class_type))
+            .get_identifier() == "java::java.lang.Number");
+      }
+
+      const typet &elem_type =
+        to_java_class_type(class_type).component_type("elem");
+      REQUIRE(is_java_generic_parameter(elem_type));
+    }
+  }
+
+  THEN("The generic fields should be annotated with concrete types")
+  {
+    const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
+    class_typet class_type =
+      require_symbol::require_complete_class(class_symbol);
+
+    java_class_typet java_class_type = to_java_class_type(class_type);
+    REQUIRE(!is_java_generics_class_type(java_class_type));
+
+    const typet &belem_type = java_class_type.component_type("belem");
+
+    REQUIRE(belem_type != nil_typet());
+    REQUIRE(is_java_generic_type(belem_type));
+    THEN("Field has instantiated type variable")
+    {
+      const java_generic_typet &container = to_java_generic_type(belem_type);
+
+      const std::vector<java_generic_parametert> &generic_types =
+        container.generic_type_variables();
+      REQUIRE(generic_types.size() == 1);
+
+      const typet &inst_type = java_generic_get_inst_type(0, container);
+
+      REQUIRE(inst_type.id() == ID_pointer);
+      const typet &inst_type_symbol = inst_type.subtype();
+      REQUIRE(inst_type_symbol.id() == ID_symbol);
+      REQUIRE(
+        to_symbol_type(inst_type_symbol).get_identifier() ==
+        "java::java.lang.Integer");
+    }
+  }
+
+  WHEN("Parsing an inner class with double bounded type variable")
+  {
+    std::string doubleboundedinner_name = class_prefix + "$DoubleBoundedInner";
+    REQUIRE(new_symbol_table.has_symbol(doubleboundedinner_name));
+    THEN("The bounds should be encoded")
+    {
+      const symbolt &class_symbol =
+        new_symbol_table.lookup_ref(doubleboundedinner_name);
+      class_typet class_type =
+        require_symbol::require_complete_class(class_symbol);
+
+      java_class_typet java_class_type = to_java_class_type(class_type);
+      REQUIRE_FALSE(is_java_generics_class_type(java_class_type));
+
+// TODO (tkiley): Extend this unit test when bounds are correctly
+// parsed.
+#if 0
+      java_generics_class_typet java_generics_class_type=
+        to_java_generics_class_type(java_class_type);
+      REQUIRE(java_generics_class_type.generic_types().size()==1);
+      typet &type_var=java_generics_class_type.generic_types().front();
+      REQUIRE(is_java_generic_parameter(type_var));
+      java_generic_parametert generic_type_var=
+        to_java_generic_parameter(type_var);
+
+      REQUIRE(
+        generic_type_var.type_variable().get_identifier()==
+        doubleboundedinner_name+"::T");
+      REQUIRE(
+        java_generics_class_type_var(0, java_generics_class_type)==
+        doubleboundedinner_name+"::T");
+      THEN("Bound must be Number and Interface")
+      {
+
+      }
+#endif
+    }
+  }
+
+  GIVEN("An inner class with multiple generic parameters")
+  {
+    std::string twoelementinner_name = class_prefix + "$TwoElementInner";
+    REQUIRE(new_symbol_table.has_symbol(twoelementinner_name));
+    THEN("Both generic parameters should be encoded")
+    {
+      const symbolt &class_symbol =
+        new_symbol_table.lookup_ref(twoelementinner_name);
+      class_typet class_type =
+        require_symbol::require_complete_class(class_symbol);
+      java_generics_class_typet java_generics_class_type =
+        require_type::require_java_generic_class(class_type);
+
+      REQUIRE(java_generics_class_type.generic_types().size() == 2);
+
+      auto generic_param_iterator =
+        java_generics_class_type.generic_types().cbegin();
+
+      // The first parameter should be called K
+      {
+        const typet &first_param = *generic_param_iterator;
+        REQUIRE(is_java_generic_parameter(first_param));
+        java_generic_parametert generic_type_var =
+          to_java_generic_parameter(first_param);
+
+        REQUIRE(
+          generic_type_var.type_variable().get_identifier() ==
+          twoelementinner_name + "::K");
+        REQUIRE(
+          java_generics_class_type_var(0, java_generics_class_type) ==
+          twoelementinner_name + "::K");
+      }
+
+      ++generic_param_iterator;
+
+      // The second parameter should be called V
+      {
+        const typet &second_param = *generic_param_iterator;
+        REQUIRE(is_java_generic_parameter(second_param));
+        java_generic_parametert generic_type_var =
+          to_java_generic_parameter(second_param);
+
+        REQUIRE(
+          generic_type_var.type_variable().get_identifier() ==
+          twoelementinner_name + "::V");
+        REQUIRE(
+          java_generics_class_type_var(1, java_generics_class_type) ==
+          twoelementinner_name + "::V");
+      }
+    }
+  }
+}

From 2e2e34b4af6840a96547ce945d9d7f1bc0478c64 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Fri, 27 Oct 2017 11:49:28 +0100
Subject: [PATCH 05/22] Renaming unit test for generic inner classes to bounded
 generic inner classes

---
 ...ndedGenericInnerClasses$BoundedInner.class | Bin 0 -> 725 bytes
 ...nericInnerClasses$DoubleBoundedInner.class | Bin 0 -> 755 bytes
 .../BoundedGenericInnerClasses$Inner.class    | Bin 0 -> 691 bytes
 ...dGenericInnerClasses$TwoElementInner.class | Bin 0 -> 777 bytes
 .../BoundedGenericInnerClasses.class          | Bin 0 -> 747 bytes
 ...s.java => BoundedGenericInnerClasses.java} |   2 +-
 .../GenericInnerClasses$BoundedInner.class    | Bin 676 -> 0 bytes
 ...nericInnerClasses$DoubleBoundedInner.class | Bin 706 -> 0 bytes
 .../GenericInnerClasses$Inner.class           | Bin 642 -> 0 bytes
 .../GenericInnerClasses$TwoElementInner.class | Bin 728 -> 0 bytes
 .../GenericInnerClasses.class                 | Bin 684 -> 0 bytes
 ...> parse_bounded_generic_inner_classes.cpp} |  22 ++++++++----------
 12 files changed, 11 insertions(+), 13 deletions(-)
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses$BoundedInner.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses$DoubleBoundedInner.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses$Inner.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses$TwoElementInner.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses.class
 rename unit/java_bytecode/java_bytecode_parse_generics/{GenericInnerClasses.java => BoundedGenericInnerClasses.java} (87%)
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$BoundedInner.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$DoubleBoundedInner.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$Inner.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$TwoElementInner.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.class
 rename unit/java_bytecode/java_bytecode_parse_generics/{parse_generic_inner_classes.cpp => parse_bounded_generic_inner_classes.cpp} (93%)

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses$BoundedInner.class b/unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses$BoundedInner.class
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses$DoubleBoundedInner.class b/unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses$DoubleBoundedInner.class
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses$TwoElementInner.class b/unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses$TwoElementInner.class
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses.class b/unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses.class
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.java b/unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses.java
similarity index 87%
rename from unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.java
rename to unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses.java
index e8d4d5e7cd7..c6f53609c4d 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/BoundedGenericInnerClasses.java
@@ -1,4 +1,4 @@
-public class GenericInnerClasses
+public class BoundedGenericInnerClasses
 {
   class Inner<E>
   {
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$BoundedInner.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$BoundedInner.class
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GIT binary patch
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$Inner.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$Inner.class
deleted file mode 100644
index 1162357e0daed77e1d2c3851677ede6a739a5a77..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 642
zcmZ`$O;5r=5PeGvl~SdGAc!9vI3OnC!IKg$1dU0fCJ^omZg5E{rY$D^EDy%SgFnC@
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sD?dwjae;!3JVk_$x-o2#uX?GBjRIM1$ymfTMG2IUi(YALRImwr0p9$T2LJ#7

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$TwoElementInner.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses$TwoElementInner.class
deleted file mode 100644
index 459f8c95fb65b484706793d8cff5628c86dff778..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 728
zcma)4$xZ@65Pij<$T$e%hC6PFVq6ZMlyEU>3`9*Jb04syqvK$P0pn+RFeV=S06)t3
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericInnerClasses.class
deleted file mode 100644
index e571308bb34d76427a77e5bc5d6b545a01cdccf3..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 684
zcmah{O;5r=5Pbub3RXc71wR3aQ4ex4@c`i<euSja1B829Hds=&Nk8;=c{1_f5Aa7B
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_inner_classes.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
similarity index 93%
rename from unit/java_bytecode/java_bytecode_parse_generics/parse_generic_inner_classes.cpp
rename to unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
index 275a94df4d0..48441425d69 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_inner_classes.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
@@ -20,13 +20,14 @@
 #include <java_bytecode/java_bytecode_language.h>
 
 SCENARIO(
-  "java_bytecode_parse_generic_inner_classes",
+  "java_bytecode_parse_bounded_generic_inner_classes",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table = load_java_class(
-    "GenericInnerClasses", "./java_bytecode/java_bytecode_parse_generics");
+    "BoundedGenericInnerClasses",
+    "./java_bytecode/java_bytecode_parse_generics");
 
-  std::string class_prefix = "java::GenericInnerClasses";
+  std::string class_prefix = "java::BoundedGenericInnerClasses";
   REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
   WHEN("Parsing an inner class with type variable")
@@ -106,7 +107,7 @@ SCENARIO(
     }
   }
 
-  THEN("The generic fields should be annotated with concrete types")
+  WHEN("There is a generic field with a concrete type")
   {
     const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
     class_typet class_type =
@@ -153,7 +154,7 @@ SCENARIO(
       REQUIRE_FALSE(is_java_generics_class_type(java_class_type));
 
 // TODO (tkiley): Extend this unit test when bounds are correctly
-// parsed.
+// parsed - issue TG-1286
 #if 0
       java_generics_class_typet java_generics_class_type=
         to_java_generics_class_type(java_class_type);
@@ -192,12 +193,10 @@ SCENARIO(
 
       REQUIRE(java_generics_class_type.generic_types().size() == 2);
 
-      auto generic_param_iterator =
-        java_generics_class_type.generic_types().cbegin();
-
       // The first parameter should be called K
       {
-        const typet &first_param = *generic_param_iterator;
+        const typet first_param =
+          java_generics_class_type.generic_types().at(0);
         REQUIRE(is_java_generic_parameter(first_param));
         java_generic_parametert generic_type_var =
           to_java_generic_parameter(first_param);
@@ -210,11 +209,10 @@ SCENARIO(
           twoelementinner_name + "::K");
       }
 
-      ++generic_param_iterator;
-
       // The second parameter should be called V
       {
-        const typet &second_param = *generic_param_iterator;
+        const typet &second_param =
+          java_generics_class_type.generic_types().at(1);
         REQUIRE(is_java_generic_parameter(second_param));
         java_generic_parametert generic_type_var =
           to_java_generic_parameter(second_param);

From 80be2fde4f719dadab855f38d3f1bad4e2ccdc69 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Fri, 27 Oct 2017 11:33:35 +0100
Subject: [PATCH 06/22] Extending and cleaning test for generic class with
 generic inner classes

---
 .../GenericClass$InnerClass.class             |  Bin 500 -> 0 bytes
 .../GenericClass.class                        |  Bin 4622 -> 0 bytes
 .../GenericClass.java                         |  109 --
 ...ricInnerClass$DoublyNestedInnerClass.class |  Bin 0 -> 891 bytes
 ...rClass$DoublyNestedInnerGenericClass.class |  Bin 0 -> 1038 bytes
 ...enericInnerClasses$GenericInnerClass.class |  Bin 0 -> 1052 bytes
 ...ssWithGenericInnerClasses$InnerClass.class |  Bin 0 -> 661 bytes
 ...erClasses$SameGenericParamInnerClass.class |  Bin 0 -> 844 bytes
 ...nericInnerClasses$TwoParamInnerClass.class |  Bin 0 -> 857 bytes
 .../GenericClassWithGenericInnerClasses.class |  Bin 0 -> 7785 bytes
 .../GenericClassWithGenericInnerClasses.java  |  147 ++
 ...neric_class_with_generic_inner_classes.cpp | 1390 +++++++++++++++++
 .../parse_generic_inner_class.cpp             |  935 -----------
 13 files changed, 1537 insertions(+), 1044 deletions(-)
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericClass$InnerClass.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericClass.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericClass.java
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$GenericInnerClass$DoublyNestedInnerClass.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$GenericInnerClass$DoublyNestedInnerGenericClass.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$GenericInnerClass.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$InnerClass.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$SameGenericParamInnerClass.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$TwoParamInnerClass.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses.java
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/parse_generic_inner_class.cpp

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericClass$InnerClass.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericClass$InnerClass.class
deleted file mode 100644
index 5a263fcbd4b297bb627f93d05fd4780a0f8670a0..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 500
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericClass.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericClass.class
deleted file mode 100644
index 3b60626bea696f3bef865c8814faf32b424b7d66..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericClass.java b/unit/java_bytecode/java_bytecode_parse_generics/GenericClass.java
deleted file mode 100644
index 8c13ed4f0db..00000000000
--- a/unit/java_bytecode/java_bytecode_parse_generics/GenericClass.java
+++ /dev/null
@@ -1,109 +0,0 @@
-public class GenericClass<T>
-{
-  class InnerClass
-  {
-  }
-
-  class GenericInnerClass<V>
-  {
-    V field;
-
-    class DoublyNestedInnerClass
-    {
-
-    }
-
-    class DoublyNestedInnerGenericClass<U>
-    {
-      T field;
-    }
-  }
-
-  class SameGenericParamInnerClass<T>
-  {
-    T field;
-  }
-
-  InnerClass field;
-  GenericInnerClass<Foo> field2;
-  GenericInnerClass<T> field3;
-
-  GenericInnerClass<Foo>.DoublyNestedInnerClass field4;
-  GenericInnerClass<T>.DoublyNestedInnerClass field5;
-
-  GenericInnerClass<Foo>.DoublyNestedInnerGenericClass<Foo> field6;
-  GenericInnerClass<T>.DoublyNestedInnerGenericClass<T> field7;
-
-  void method(InnerClass input)
-  {
-
-  }
-
-  void method2(InnerClass input, InnerClass input2)
-  {
-
-  }
-
-
-  void method3(GenericInnerClass<Foo> input)
-  {
-
-  }
-
-  void method4(GenericInnerClass<T> input)
-  {
-
-  }
-
-  void method5(GenericInnerClass<Foo>.DoublyNestedInnerClass input)
-  {
-
-  }
-
-  void method6(GenericInnerClass<T>.DoublyNestedInnerClass input)
-  {
-
-  }
-
-  void method7(GenericInnerClass<Foo>.DoublyNestedInnerGenericClass<Foo> input)
-  {
-
-  }
-
-  void method8(GenericInnerClass<T>.DoublyNestedInnerGenericClass<T> input)
-  {
-
-  }
-
-  InnerClass ret_method1()
-  {
-    return null;
-  }
-
-  GenericInnerClass<Foo> ret_method2()
-  {
-    return null;
-  }
-
-  GenericInnerClass<T> ret_method3()
-  {
-    return null;
-  }
-
-  GenericInnerClass<Foo>.DoublyNestedInnerClass ret_method4()
-  {
-    return null;
-  }
-  GenericInnerClass<T>.DoublyNestedInnerClass ret_method5()
-  {
-    return null;
-  }
-  GenericInnerClass<Foo>.DoublyNestedInnerGenericClass<Foo> ret_method6()
-  {
-    return null;
-  }
-  GenericInnerClass<T>.DoublyNestedInnerGenericClass<T> ret_method7()
-  {
-    return null;
-  }
-}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$GenericInnerClass$DoublyNestedInnerClass.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$GenericInnerClass$DoublyNestedInnerClass.class
new file mode 100644
index 0000000000000000000000000000000000000000..3065af91fd05391cbb9cb037aba52158088c992d
GIT binary patch
literal 891
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literal 0
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$GenericInnerClass$DoublyNestedInnerGenericClass.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$GenericInnerClass$DoublyNestedInnerGenericClass.class
new file mode 100644
index 0000000000000000000000000000000000000000..3ecc5dea34c4bc1c518cdcad559ccb7f2641d80d
GIT binary patch
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literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$GenericInnerClass.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$GenericInnerClass.class
new file mode 100644
index 0000000000000000000000000000000000000000..3a691c046fe258e037103c9f2ce433d486c4175c
GIT binary patch
literal 1052
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literal 0
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$InnerClass.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$InnerClass.class
new file mode 100644
index 0000000000000000000000000000000000000000..87b4af7cb7817ebe6da54d6827ea3ca11b940514
GIT binary patch
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$SameGenericParamInnerClass.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$SameGenericParamInnerClass.class
new file mode 100644
index 0000000000000000000000000000000000000000..c46e01daea04760cd03cd26d84547d164356d3d3
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$TwoParamInnerClass.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses$TwoParamInnerClass.class
new file mode 100644
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses.class
new file mode 100644
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GIT binary patch
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses.java b/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses.java
new file mode 100644
index 00000000000..91d269a85dd
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/GenericClassWithGenericInnerClasses.java
@@ -0,0 +1,147 @@
+public class GenericClassWithGenericInnerClasses<T>
+{
+  class InnerClass
+  {
+  }
+
+  class GenericInnerClass<V>
+  {
+    V field;
+
+    class DoublyNestedInnerClass
+    {
+
+    }
+
+    class DoublyNestedInnerGenericClass<U>
+    {
+      T field;
+    }
+  }
+
+  class SameGenericParamInnerClass<T>
+  {
+    T field;
+  }
+
+  class TwoParamInnerClass<K, L>
+  {
+    K k;
+    L l;
+  }
+
+  InnerClass field;
+
+  GenericInnerClass<Interface_Implementation> field2;
+  GenericInnerClass<T> field3;
+
+  GenericInnerClass<Interface_Implementation>.DoublyNestedInnerClass field4;
+  GenericInnerClass<T>.DoublyNestedInnerClass field5;
+
+  GenericInnerClass<Interface_Implementation>.DoublyNestedInnerGenericClass<Interface_Implementation> field6;
+  GenericInnerClass<T>.DoublyNestedInnerGenericClass<T> field7;
+
+  TwoParamInnerClass<Interface_Implementation,Interface_Implementation> field8;
+  TwoParamInnerClass<Interface_Implementation,T> field9;
+  TwoParamInnerClass<T,T> field10;
+
+  void method(InnerClass input)
+  {
+
+  }
+
+  void method2(InnerClass input, InnerClass input2)
+  {
+
+  }
+
+
+  void method3(GenericInnerClass<Interface_Implementation> input)
+  {
+
+  }
+
+  void method4(GenericInnerClass<T> input)
+  {
+
+  }
+
+  void method5(GenericInnerClass<Interface_Implementation>.DoublyNestedInnerClass input)
+  {
+
+  }
+
+  void method6(GenericInnerClass<T>.DoublyNestedInnerClass input)
+  {
+
+  }
+
+  void method7(GenericInnerClass<Interface_Implementation>.DoublyNestedInnerGenericClass<Interface_Implementation> input)
+  {
+
+  }
+
+  void method8(GenericInnerClass<T>.DoublyNestedInnerGenericClass<T> input)
+  {
+
+  }
+
+  void method9(TwoParamInnerClass<Interface_Implementation,Interface_Implementation> input)
+  {
+
+  }
+
+  void method10(TwoParamInnerClass<Interface_Implementation,T> input)
+  {
+
+  }
+
+  void method11(TwoParamInnerClass<T,T> input)
+  {
+
+  }
+
+  InnerClass ret_method1()
+  {
+    return null;
+  }
+
+  GenericInnerClass<Interface_Implementation> ret_method2()
+  {
+    return null;
+  }
+
+  GenericInnerClass<T> ret_method3()
+  {
+    return null;
+  }
+
+  GenericInnerClass<Interface_Implementation>.DoublyNestedInnerClass ret_method4()
+  {
+    return null;
+  }
+  GenericInnerClass<T>.DoublyNestedInnerClass ret_method5()
+  {
+    return null;
+  }
+  GenericInnerClass<Interface_Implementation>.DoublyNestedInnerGenericClass<Interface_Implementation> ret_method6()
+  {
+    return null;
+  }
+  GenericInnerClass<T>.DoublyNestedInnerGenericClass<T> ret_method7()
+  {
+    return null;
+  }
+  TwoParamInnerClass<Interface_Implementation,Interface_Implementation> ret_method8()
+  {
+    return null;
+  }
+  TwoParamInnerClass<Interface_Implementation,T> ret_method9()
+  {
+    return null;
+  }
+  TwoParamInnerClass<T,T> ret_method10()
+  {
+    return null;
+  }
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp
new file mode 100644
index 00000000000..b7b1b1e54eb
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp
@@ -0,0 +1,1390 @@
+/*******************************************************************\
+
+ Module: Unit tests for parsing generic classes
+
+ Author: DiffBlue Limited. All rights reserved.
+
+\*******************************************************************/
+
+#include <testing-utils/catch.hpp>
+#include <testing-utils/require_symbol.h>
+#include <testing-utils/require_type.h>
+
+#include <util/cmdline.h>
+#include <util/config.h>
+#include <util/language.h>
+#include <util/prefix.h>
+#include <util/std_types.h>
+
+#include <java_bytecode/java_bytecode_language.h>
+
+#include <testing-utils/load_java_class.h>
+
+SCENARIO(
+  "parse_generic_class_with_generic_inner_classes_fields",
+  "[core][java_bytecode][java_bytecode_parse_generics]")
+{
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "GenericClassWithGenericInnerClasses",
+    "./java_bytecode/java_bytecode_parse_generics");
+
+  std::string class_prefix = "java::GenericClassWithGenericInnerClasses";
+  THEN(
+    "There should be a symbol for "
+    "GenericClassWithGenericInnerClasses with correct components")
+  {
+    REQUIRE(new_symbol_table.has_symbol(class_prefix));
+    const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
+
+    const class_typet &class_type =
+      require_symbol::require_complete_class(class_symbol);
+
+    THEN(
+      "The field component should be a pointer to "
+      "GenericClassWithGenericInnerClasses$InnerClass")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet(class_prefix + "$InnerClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 1);
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+
+    THEN(
+      "The field2 component should be a pointer to "
+      "GenericClassWithGenericInnerClasses$GenericInnerClass")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field2");
+
+      require_type::require_pointer(
+        field_component.type(),
+        symbol_typet(class_prefix + "$GenericInnerClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 2);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_inst_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::Interface_Implementation")));
+        }
+      }
+    }
+
+    THEN(
+      "The field3 component should be a pointer to "
+      "GenericClassWithGenericInnerClasses$GenericInnerClass")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field3");
+
+      require_type::require_pointer(
+        field_component.type(),
+        symbol_typet(class_prefix + "$GenericInnerClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 2);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+      }
+    }
+
+    THEN(
+      "The field4 component should be a pointer to GenericClassWithGeneric"
+      "InnerClasses$GenericInnerClass$DoublyNestedInnerClass")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field4");
+
+      require_type::require_pointer(
+        field_component.type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 2);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::Interface_Implementation")));
+        }
+      }
+    }
+
+    THEN(
+      "The field5 component should be a pointer to GenericClassWithGeneric"
+      "InnerClasses$GenericInnerClass$DoublyNestedInnerClass")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field5");
+
+      require_type::require_pointer(
+        field_component.type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 2);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+      }
+    }
+
+    THEN(
+      "The field6 component should be a pointer to GenericClassWithGeneric"
+      "InnerClasses$GenericInnerClass$DoublyNestedInnerGenericClass")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field6");
+
+      require_type::require_pointer(
+        field_component.type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 3);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::Interface_Implementation")));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[2];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::Interface_Implementation")));
+        }
+      }
+    }
+
+    THEN(
+      "The field7 component should be a pointer to GenericClassWithGeneric"
+      "InnerClasses$GenericInnerClass$DoublyNestedInnerGenericClass")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field7");
+
+      require_type::require_pointer(
+        field_component.type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 3);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[2];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+      }
+    }
+
+    THEN(
+      "The field8 component should be a pointer to "
+      "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field8");
+
+      require_type::require_pointer(
+        field_component.type(),
+        symbol_typet(class_prefix + "$TwoParamInnerClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 3);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::Interface_Implementation")));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[2];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::Interface_Implementation")));
+        }
+      }
+    }
+
+    THEN(
+      "The field9 component should be a pointer to "
+      "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field9");
+
+      require_type::require_pointer(
+        field_component.type(),
+        symbol_typet(class_prefix + "$TwoParamInnerClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 3);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::Interface_Implementation")));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[2];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+      }
+    }
+
+    THEN(
+      "The field10 component should be a pointer to "
+      "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field10");
+
+      require_type::require_pointer(
+        field_component.type(),
+        symbol_typet(class_prefix + "$TwoParamInnerClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 3);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[2];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param.type_variable() ==
+            symbol_typet(class_prefix + "::T"));
+        }
+      }
+    }
+  }
+}
+
+SCENARIO(
+  "parse_generic_class_with_generic_inner_classes_methods",
+  "[core][java_bytecode][java_bytecode_parse_generics][caskjd]")
+{
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "GenericClassWithGenericInnerClasses",
+    "./java_bytecode/java_bytecode_parse_generics");
+
+  std::string class_prefix = "java::GenericClassWithGenericInnerClasses";
+
+  THEN(
+    "Method 1 should take a pointer to "
+    "GenericClassWithGenericInnerClasses$InnerClass")
+  {
+    const std::string func_name = ".method";
+    const std::string func_descriptor =
+      ":(LGenericClassWithGenericInnerClasses$InnerClass;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet(class_prefix + "$InnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+    }
+  }
+  THEN(
+    "Method 2 should take two pointers to "
+    "GenericClassWithGenericInnerClasses$InnerClass")
+  {
+    const std::string func_name = ".method2";
+    const std::string func_descriptor =
+      ":(LGenericClassWithGenericInnerClasses$InnerClass;"
+      "LGenericClassWithGenericInnerClasses$InnerClass;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    // Check param input
+    {
+      const auto param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet(class_prefix + "$InnerClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(param_type.type()));
+        const auto &generic_variables =
+          to_java_generic_type(param_type.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 1);
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+
+    // Check param input2
+    {
+      const auto param_type2 =
+        require_type::require_parameter(function_call, "input2");
+      require_type::require_pointer(
+        param_type2.type(), symbol_typet(class_prefix + "$InnerClass"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(param_type2.type()));
+        const auto &generic_variables =
+          to_java_generic_type(param_type2.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 1);
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+  }
+  THEN(
+    "Method 3 should take a pointer to "
+    "GenericClassWithGenericInnerClasses$GenericInnerClass")
+  {
+    const std::string func_name = ".method3";
+    const std::string func_descriptor =
+      ":(LGenericClassWithGenericInnerClasses$GenericInnerClass;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet(class_prefix + "$GenericInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_inst_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+    }
+  }
+  THEN(
+    "Method 4 should take a pointer to "
+    "GenericClassWithGenericInnerClasses$GenericInnerClass")
+  {
+    const std::string func_name = ".method4";
+    const std::string func_descriptor =
+      ":(LGenericClassWithGenericInnerClasses$GenericInnerClass;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet(class_prefix + "$GenericInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+  }
+  THEN(
+    "Method 5 should take a pointer to GenericClassWithGenericInnerClasses"
+    "$GenericInnerClass$DoublyNestedInnerClass")
+  {
+    const std::string func_name = ".method5";
+    const std::string func_descriptor =
+      ":(LGenericClassWithGenericInnerClasses$"
+      "GenericInnerClass$DoublyNestedInnerClass;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(),
+      symbol_typet(class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_inst_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+    }
+  }
+  THEN(
+    "Method 6 should take a pointer to GenericClassWithGenericInnerClasses"
+    "$GenericInnerClass$DoublyNestedInnerClass")
+  {
+    const std::string func_name = ".method6";
+    const std::string func_descriptor =
+      ":(LGenericClassWithGenericInnerClasses"
+      "$GenericInnerClass$DoublyNestedInnerClass;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(),
+      symbol_typet(class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+  }
+  THEN(
+    "Method 7 should take a pointer to GenericClassWithGenericInnerClasses"
+    "$GenericInnerClass$DoublyNestedInnerGenericClass")
+  {
+    const std::string func_name = ".method7";
+    const std::string func_descriptor =
+      ":(LGenericClassWithGenericInnerClasses"
+      "$GenericInnerClass$DoublyNestedInnerGenericClass;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(),
+      symbol_typet(
+        class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 3);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_inst_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[2];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+    }
+  }
+  THEN(
+    "Method 8 should take a pointer to GenericClassWithGenericInnerClasses"
+    "$GenericInnerClass$DoublyNestedInnerGenericClass")
+  {
+    const std::string func_name = ".method8";
+    const std::string func_descriptor =
+      ":(LGenericClassWithGenericInnerClasses"
+      "$GenericInnerClass$DoublyNestedInnerGenericClass;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(),
+      symbol_typet(
+        class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 3);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[2];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+  }
+  THEN(
+    "Method 9 should take a pointer to "
+    "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
+  {
+    const std::string func_name = ".method9";
+    const std::string func_descriptor =
+      ":(LGenericClassWithGenericInnerClasses$TwoParamInnerClass;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet(class_prefix + "$TwoParamInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 3);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[2];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+    }
+  }
+  THEN(
+    "Method 10 should take a pointer to "
+    "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
+  {
+    const std::string func_name = ".method10";
+    const std::string func_descriptor =
+      ":(LGenericClassWithGenericInnerClasses$TwoParamInnerClass;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet(class_prefix + "$TwoParamInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 3);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[2];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+  }
+  THEN(
+    "Method 11 should take a pointer to "
+    "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
+  {
+    const std::string func_name = ".method11";
+    const std::string func_descriptor =
+      ":(LGenericClassWithGenericInnerClasses$TwoParamInnerClass;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet(class_prefix + "$TwoParamInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 3);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[2];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+  }
+  THEN(
+    "Ret Method 1 should return a "
+    "GenericClassWithGenericInnerClasses$InnerClass")
+  {
+    const std::string func_name = ".ret_method1";
+    const std::string func_descriptor =
+      ":()"
+      "LGenericClassWithGenericInnerClasses$InnerClass;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet(class_prefix + "$InnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+    }
+  }
+  THEN(
+    "Ret method 2 should return a "
+    "GenericClassWithGenericInnerClasses$GenericInnerClass")
+  {
+    const std::string func_name = ".ret_method2";
+    const std::string func_descriptor =
+      ":()LGenericClassWithGenericInnerClasses$GenericInnerClass;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(),
+      symbol_typet(class_prefix + "$GenericInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_inst_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+    }
+  }
+  THEN(
+    "Ret method 3 should return a "
+    "GenericClassWithGenericInnerClasses$GenericInnerClass")
+  {
+    const std::string func_name = ".ret_method3";
+    const std::string func_descriptor =
+      ":()LGenericClassWithGenericInnerClasses$GenericInnerClass;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(),
+      symbol_typet(class_prefix + "$GenericInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+  }
+  THEN(
+    "Ret method 4 should return a GenericClassWithGenericInnerClasses"
+    "$GenericInnerClass$DoublyNestedInnerClass")
+  {
+    const std::string func_name = ".ret_method4";
+    const std::string func_descriptor =
+      ":()LGenericClassWithGenericInner"
+      "Classes$GenericInnerClass$DoublyNestedInnerClass;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(),
+      symbol_typet(class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_inst_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+    }
+  }
+  THEN(
+    "Ret method 5 should return a GenericClassWithGenericInnerClasses"
+    "$GenericInnerClass$DoublyNestedInnerClass")
+  {
+    const std::string func_name = ".ret_method5";
+    const std::string func_descriptor =
+      ":()LGenericClassWithGenericInner"
+      "Classes$GenericInnerClass$DoublyNestedInnerClass;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(),
+      symbol_typet(class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+  }
+  THEN(
+    "Ret method 6 should return a GenericClassWithGenericInnerClasses"
+    "$GenericInnerClass$DoublyNestedInnerGenericClass")
+  {
+    const std::string func_name = ".ret_method6";
+    const std::string func_descriptor =
+      ":()LGenericClassWithGenericInner"
+      "Classes$GenericInnerClass$DoublyNestedInnerGenericClass;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(),
+      symbol_typet(
+        class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 3);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_inst_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[2];
+        REQUIRE(is_java_generic_inst_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+    }
+  }
+  THEN(
+    "Ret method 7 should return a GenericClassWithGenericInnerClasses"
+    "$GenericInnerClass$DoublyNestedInnerGenericClass")
+  {
+    const std::string func_name = ".ret_method7";
+    const std::string func_descriptor =
+      ":()LGenericClassWithGenericInner"
+      "Classes$GenericInnerClass$DoublyNestedInnerGenericClass;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(),
+      symbol_typet(
+        class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 3);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[2];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+  }
+  THEN(
+    "Ret method 8 should return a "
+    "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
+  {
+    const std::string func_name = ".ret_method8";
+    const std::string func_descriptor =
+      ":()LGenericClassWithGenericInner"
+      "Classes$TwoParamInnerClass;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(),
+      symbol_typet(class_prefix + "$TwoParamInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 3);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[2];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+    }
+  }
+  THEN(
+    "Ret method 9 should return a "
+    "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
+  {
+    const std::string func_name = ".ret_method9";
+    const std::string func_descriptor =
+      ":()LGenericClassWithGenericInnerClasses$TwoParamInnerClass;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(),
+      symbol_typet(class_prefix + "$TwoParamInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 3);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[2];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+  }
+  THEN(
+    "Ret method 10 should return a "
+    "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
+  {
+    const std::string func_name = ".ret_method10";
+    const std::string func_descriptor =
+      ":()LGenericClassWithGenericInnerClasses$TwoParamInnerClass;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(),
+      symbol_typet(class_prefix + "$TwoParamInnerClass"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 3);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[2];
+        REQUIRE(is_java_generic_parameter(generic_param));
+        REQUIRE(
+          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      }
+    }
+  }
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_inner_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_inner_class.cpp
deleted file mode 100644
index acb09972a88..00000000000
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_inner_class.cpp
+++ /dev/null
@@ -1,935 +0,0 @@
-/*******************************************************************\
-
- Module: Unit tests for parsing generic classes
-
- Author: DiffBlue Limited. All rights reserved.
-
-\*******************************************************************/
-
-#include <testing-utils/catch.hpp>
-#include <testing-utils/require_symbol.h>
-#include <testing-utils/require_type.h>
-
-#include <util/cmdline.h>
-#include <util/config.h>
-#include <util/language.h>
-#include <util/prefix.h>
-#include <util/std_types.h>
-
-#include <java_bytecode/java_bytecode_language.h>
-
-#include <iostream>
-#include <testing-utils/load_java_class.h>
-
-SCENARIO(
-  "Parse fields of inner classes on a generic class",
-  "[core][java_bytecode][java_bytecode_parse_generics]")
-{
-  const symbol_tablet &new_symbol_table = load_java_class(
-    "GenericClass", "./java_bytecode/java_bytecode_parse_generics");
-
-  std::string class_prefix = "java::GenericClass";
-  THEN("There should be a symbol for GenericClass with correct components")
-  {
-    REQUIRE(new_symbol_table.has_symbol(class_prefix));
-    const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
-
-    const class_typet &class_type =
-      require_symbol::require_complete_class(class_symbol);
-
-    THEN("The field component should be a pointer to GenericClass$InnerClass")
-    {
-      const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field");
-
-      require_type::require_pointer(
-        field_component.type(), symbol_typet("java::GenericClass$InnerClass"));
-
-      THEN("The pointer should be generic")
-      {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-    }
-
-    THEN("The field component should be a pointer to GenericClass$InnerClass")
-    {
-      const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field2");
-
-      require_type::require_pointer(
-        field_component.type(),
-        symbol_typet("java::GenericClass$GenericInnerClass"));
-
-      THEN("The pointer should be generic")
-      {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet("java::GenericClass::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_inst_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Foo")));
-        }
-      }
-    }
-
-    THEN(
-      "The field component should be a pointer to "
-      "GenericClass$GenericInnerClass$DoublyNestedInnerClass")
-    {
-      const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field4");
-
-      require_type::require_pointer(
-        field_component.type(),
-        symbol_typet(
-          "java::GenericClass$GenericInnerClass$DoublyNestedInnerClass"));
-
-      THEN("The pointer should be generic")
-      {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet("java::GenericClass::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Foo")));
-        }
-      }
-    }
-
-    THEN(
-      "The field component should be a pointer to "
-      "GenericClass$GenericInnerClass$DoublyNestedInnerClass")
-    {
-      const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field5");
-
-      require_type::require_pointer(
-        field_component.type(),
-        symbol_typet(
-          "java::GenericClass$GenericInnerClass$DoublyNestedInnerClass"));
-
-      THEN("The pointer should be generic")
-      {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet("java::GenericClass::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet("java::GenericClass::T"));
-        }
-      }
-    }
-
-    THEN(
-      "The field component should be a pointer to "
-      "GenericClass$GenericInnerClass$DoublyNestedInnerGenericClass")
-    {
-      const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field6");
-
-      require_type::require_pointer(
-        field_component.type(),
-        symbol_typet(
-          "java::GenericClass$GenericInnerClass$"
-          "DoublyNestedInnerGenericClass"));
-
-      THEN("The pointer should be generic")
-      {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 3);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet("java::GenericClass::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Foo")));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[2];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Foo")));
-        }
-      }
-    }
-
-    THEN(
-      "The field component should be a pointer to "
-      "GenericClass$GenericInnerClass$DoublyNestedInnerGenericClass")
-    {
-      const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field7");
-
-      require_type::require_pointer(
-        field_component.type(),
-        symbol_typet(
-          "java::GenericClass$GenericInnerClass$"
-          "DoublyNestedInnerGenericClass"));
-
-      THEN("The pointer should be generic")
-      {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 3);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet("java::GenericClass::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet("java::GenericClass::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[2];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet("java::GenericClass::T"));
-        }
-      }
-    }
-  }
-}
-
-SCENARIO(
-  "Parse methods of generic classes using inner parameters",
-  "[core][java_bytecode][java_bytecode_parse_generics][caskjd]")
-{
-  const symbol_tablet &new_symbol_table = load_java_class(
-    "GenericClass", "./java_bytecode/java_bytecode_parse_generics");
-
-  std::string class_prefix = "java::GenericClass";
-
-  THEN("Method 1 should take a pointer to GenericClass$InnerClass")
-  {
-    const std::string func_name = ".method";
-    const std::string func_descriptor = ":(LGenericClass$InnerClass;)V";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::GenericClass$InnerClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param.type_variable() == symbol_typet("java::GenericClass::T"));
-    }
-  }
-  THEN("Method 2 should take two pointers to GenericClass$InnerClass")
-  {
-    const std::string func_name = ".method2";
-    const std::string func_descriptor =
-      ":(LGenericClass$InnerClass;LGenericClass$InnerClass;)V";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    // Check param input
-    {
-      const auto param_type =
-        require_type::require_parameter(function_call, "input");
-      require_type::require_pointer(
-        param_type.type(), symbol_typet("java::GenericClass$InnerClass"));
-
-      THEN("The pointer should be generic")
-      {
-        REQUIRE(is_java_generic_type(param_type.type()));
-        const auto &generic_variables =
-          to_java_generic_type(param_type.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-    }
-
-    // Check param input2
-    {
-      const auto param_type2 =
-        require_type::require_parameter(function_call, "input2");
-      require_type::require_pointer(
-        param_type2.type(), symbol_typet("java::GenericClass$InnerClass"));
-
-      THEN("The pointer should be generic")
-      {
-        REQUIRE(is_java_generic_type(param_type2.type()));
-        const auto &generic_variables =
-          to_java_generic_type(param_type2.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-    }
-  }
-  THEN("Method 3 should take a pointer to GenericClass$GenericInnerClass")
-  {
-    const std::string func_name = ".method3";
-    const std::string func_descriptor = ":(LGenericClass$GenericInnerClass;)V";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::GenericClass$GenericInnerClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Foo")));
-      }
-    }
-  }
-  THEN("Method 4 should take a pointer to GenericClass$GenericInnerClass")
-  {
-    const std::string func_name = ".method4";
-    const std::string func_descriptor = ":(LGenericClass$GenericInnerClass;)V";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::GenericClass$GenericInnerClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-    }
-  }
-  THEN(
-    "Method 5 should take a pointer to "
-    "GenericClass$GenericInnerClass$DoublyNestedInnerClass")
-  {
-    const std::string func_name = ".method5";
-    const std::string func_descriptor =
-      ":(LGenericClass$GenericInnerClass$DoublyNestedInnerClass;)V";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(),
-      symbol_typet(
-        "java::GenericClass$GenericInnerClass$DoublyNestedInnerClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Foo")));
-      }
-    }
-  }
-  THEN(
-    "Method 6 should take a pointer to "
-    "GenericClass$GenericInnerClass$DoublyNestedInnerClass")
-  {
-    const std::string func_name = ".method6";
-    const std::string func_descriptor =
-      ":(LGenericClass$GenericInnerClass$DoublyNestedInnerClass;)V";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(),
-      symbol_typet(
-        "java::GenericClass$GenericInnerClass$DoublyNestedInnerClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-    }
-  }
-  THEN(
-    "Method 7 should take a pointer to "
-    "GenericClass$GenericInnerClass$DoublyNestedInnerGenericClass")
-  {
-    const std::string func_name = ".method7";
-    const std::string func_descriptor =
-      ":(LGenericClass$GenericInnerClass$DoublyNestedInnerGenericClass;)V";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(),
-      symbol_typet(
-        "java::GenericClass$GenericInnerClass$"
-        "DoublyNestedInnerGenericClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Foo")));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Foo")));
-      }
-    }
-  }
-  THEN(
-    "Method 8 should take a pointer to "
-    "GenericClass$GenericInnerClass$DoublyNestedInnerGenericClass")
-  {
-    const std::string func_name = ".method8";
-    const std::string func_descriptor =
-      ":(LGenericClass$GenericInnerClass$DoublyNestedInnerGenericClass;)V";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(),
-      symbol_typet(
-        "java::GenericClass$GenericInnerClass$"
-        "DoublyNestedInnerGenericClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-    }
-  }
-  THEN("Ret Method 1 should return a GenericClass$InnerClass")
-  {
-    const std::string func_name = ".ret_method1";
-    const std::string func_descriptor = ":()LGenericClass$InnerClass;";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet("java::GenericClass$InnerClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param.type_variable() == symbol_typet("java::GenericClass::T"));
-    }
-  }
-  THEN("Ret method 2 should return a GenericClass$GenericInnerClass")
-  {
-    const std::string func_name = ".ret_method2";
-    const std::string func_descriptor = ":()LGenericClass$GenericInnerClass;";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet("java::GenericClass$GenericInnerClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Foo")));
-      }
-    }
-  }
-  THEN("Ret method 3 should return a GenericClass$GenericInnerClass")
-  {
-    const std::string func_name = ".ret_method3";
-    const std::string func_descriptor = ":()LGenericClass$GenericInnerClass;";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet("java::GenericClass$GenericInnerClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-    }
-  }
-  THEN(
-    "Ret method 4 should return a "
-    "GenericClass$GenericInnerClass$DoublyNestedInnerClass")
-  {
-    const std::string func_name = ".ret_method4";
-    const std::string func_descriptor =
-      ":()LGenericClass$GenericInnerClass$DoublyNestedInnerClass;";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(
-        "java::GenericClass$GenericInnerClass$DoublyNestedInnerClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Foo")));
-      }
-    }
-  }
-  THEN(
-    "Ret method 5 should return a "
-    "GenericClass$GenericInnerClass$DoublyNestedInnerClass")
-  {
-    const std::string func_name = ".ret_method5";
-    const std::string func_descriptor =
-      ":()LGenericClass$GenericInnerClass$DoublyNestedInnerClass;";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(
-        "java::GenericClass$GenericInnerClass$DoublyNestedInnerClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-    }
-  }
-  THEN(
-    "Ret method 6 should return a "
-    "GenericClass$GenericInnerClass$DoublyNestedInnerGenericClass")
-  {
-    const std::string func_name = ".ret_method6";
-    const std::string func_descriptor =
-      ":()LGenericClass$GenericInnerClass$DoublyNestedInnerGenericClass;";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(
-        "java::GenericClass$GenericInnerClass$"
-        "DoublyNestedInnerGenericClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Foo")));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Foo")));
-      }
-    }
-  }
-  THEN(
-    "Ret method 7 should return a "
-    "GenericClass$GenericInnerClass$DoublyNestedInnerGenericClass")
-  {
-    const std::string func_name = ".ret_method7";
-    const std::string func_descriptor =
-      ":()LGenericClass$GenericInnerClass$DoublyNestedInnerGenericClass;";
-    const std::string process_func_name =
-      class_prefix + func_name + func_descriptor;
-
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
-    const symbolt &function_symbol =
-      new_symbol_table.lookup_ref(process_func_name);
-
-    const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(
-        "java::GenericClass$GenericInnerClass$"
-        "DoublyNestedInnerGenericClass"));
-
-    THEN("The pointer should be generic")
-    {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() ==
-          symbol_typet("java::GenericClass::T"));
-      }
-    }
-  }
-}

From 3e6cf3562671f3159c05fd1635a12e5b7ba12388 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Tue, 24 Oct 2017 15:24:17 +0100
Subject: [PATCH 07/22] Extending test for signature/descriptor mismatch

---
 .../SignatureDescriptorMismatch$Inner.class   | Bin 752 -> 752 bytes
 ...ignatureDescriptorMismatch$InnerEnum.class | Bin 1024 -> 1024 bytes
 .../SignatureDescriptorMismatch.java          |   2 ++
 .../parse_signature_descriptor_mismatch.cpp   |  18 ++++++++++++++++++
 4 files changed, 20 insertions(+)

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch$Inner.class b/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch$Inner.class
index b7dcb3d5421e08a75ad7be19ebded76754a05778..aa3e07c310153720f1a828bf249e19d4cc762f3f 100644
GIT binary patch
delta 21
ccmeys`hj&rFB2yx11AF)10MtT<Y`P%070e%?EnA(

delta 21
bcmeys`hj&rFB2yR11AvjF>p<u#uNnrL5l?H

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch$InnerEnum.class b/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch$InnerEnum.class
index 82139a88405eb5794627a0b7afac560286afb093..3af3b7d4d07b094d3eadbdfe7623d085d931c3c0 100644
GIT binary patch
delta 31
icmZqRXyDkO#>~h+S)ExQNQN`p0m*61?m+S$vl0MtYzImJ

delta 31
icmZqRXyDkO#>~h&S)ExQNQN`p0m*61?m+S$vl0Ms{0Bk+

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch.java b/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch.java
index 314d2645889..defe9600981 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/SignatureDescriptorMismatch.java
@@ -1,5 +1,6 @@
 public class SignatureDescriptorMismatch<T>
 {
+  // this models ArrayList.Sublist.<init> for which we were getting an error
   private class Inner
   {
     private final AbstractGeneric<T> u;
@@ -10,6 +11,7 @@ private class Inner
     }
   }
 
+  // this models another situation in which the error occurred
   private enum InnerEnum
   {
 
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
index 60560ec1446..1ca93cbe9fa 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
@@ -52,6 +52,15 @@ SCENARIO(
     const code_typet func_code=
       to_code_type(new_symbol_table.lookup_ref(process_func_name).type);
     REQUIRE(func_code.parameters().size()==3);
+
+    // TODO: for now, the parameters are not generic because we fall back to
+    // descriptor due to mismatch; enable tests when fixed
+    // code_typet::parametert param_parent=
+    //  require_type::require_parameter(func_code,"arg1a");
+    // REQUIRE(is_java_generic_type(param_parent.type()));
+    // code_typet::parametert param_t=
+    //  require_type::require_parameter(func_code,"t");
+    // REQUIRE(is_java_generic_type(param_t.type()));
   }
 
   const std::string inner_enum_prefix=class_prefix+"$InnerEnum";
@@ -78,5 +87,14 @@ SCENARIO(
     const code_typet func_code=
       to_code_type(new_symbol_table.lookup_ref(process_func_name).type);
     REQUIRE(func_code.parameters().size()==3);
+
+    // TODO: for now, the parameters are not generic because we fall back to
+    // descriptor due to mismatch; enable tests when fixed
+    // code_typet::parametert param_parent=
+    //  require_type::require_parameter(func_code,"arg1a");
+    // REQUIRE(is_java_generic_type(param_parent.type()));
+    // code_typet::parametert param_t=
+    //  require_type::require_parameter(func_code,"arg2i");
+    // REQUIRE(is_java_generic_type(param_t.type()));
   }
 }

From 89b99ceae587ced6081cade42c8b7ea672ef482c Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Tue, 24 Oct 2017 17:24:41 +0100
Subject: [PATCH 08/22] Extending test for generic functions

---
 .../GenericFunctions.class                    |  Bin 1187 -> 4746 bytes
 .../GenericFunctions.java                     |  113 +-
 .../parse_generic_functions.cpp               | 1228 ++++++++++++++++-
 3 files changed, 1301 insertions(+), 40 deletions(-)

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.class
index ef35fd9b89f36c418b60fb9190b5dbcda27ecab2..15323c85953d2b8fc780371e602b2983f2bff107 100644
GIT binary patch
literal 4746
zcmcJSdr#X|7{=cdE+HwjE9J5lx`wW!+y;ZOwId<z8b%u$dLv}o{unaBbVk96oP@2~
zKGY^ns<cV_0Q*qWp5x<ld}13Cw;EDn`&@p{dpmE;KmY#uHxaGVt27N#DM`C&N>C|<
zuV+bmo}?Fy26L8ewepPm=H@Gm`U~|VlhKuuWt-31r-!CfHV$hT87<YTMy+Bv7Jv2z
z`&&O+O+NS7v`xpVZny1f%c|SWETfTzQ?HuM=AL!h;DF&dxhl(r*w2hoYJ|~5C;v@D
zYFw6!a^-S14{&PFdTkr6wgc$hTzR8(Vw@Q(HN$?r^8E0`thTawB_;N7y&Il6`;CU_
zJgT?tqoUn1onxa4%nUFaB{dKUm<Rz1HKPgdSGWyo??I8fdurM(gGV9~HSM9c>TSf*
zx5xu#F9d2@k?_npaAhH*wSc=C@}N*}youzFd)(c2t!2SQnb&a@?5xa`NN@{DZZp#I
zx9{e!$lVL&Y(HWwm`BOal{txL^?JZ4KbDNX4R{F!6@y@ww5gEuVbx*BMETh=0+;6I
z<r<XdY@~a6e~ql;t2$-dGHXYS#;`0D8b(v+F>xdi1Of7WS8g)O1cDG@$9QnNSBA@6
zRH1?qivUdt&^cATaUo7qLIPAgWvp&Rqm^}xRs)V|Kv~lv>ZDgaue5aT8K-CnV}4Pq
zU5NBL_aT&@V412N()v3cIuUsiqCDW5*`Y!Vaph4L_WN8nfr6R4FzQ_`pY5<bGP6SG
z$%Q(xyjr+WQ>9$!J_y82Q<7<yXVd#F=zL@(o3UO5Th{Th>7a)*avck$yj!<&`%_Tq
zymV=5m4G|%(z7D9J4>*$him#b{koUdXI0tZ0I;);hF)<S`U%f{Pa&#AtkY|dn=W;8
zWlmS(@+{4DREKoLuYJv#pWZQ;75x;3tEdMf(|h%{Q#H3O{^Bzpd^uX?u^Of%4KYf3
zlf#sumyA9LuEkI=viyB3IF_Xu8o)aq|C=OWX$apbJgwl$a2;59OYC>tBq)vVL3fbR
zCEO2-1-OpjDMgp*3RdyWoA~g}?#4cC<B+xyCel?b8pTJT_{cRpjp37^aiAu;BS&H&
zCxQI1J90Dz@;Z<=x+5oJAg6$w?v9*}fxHRiM|8_e&r3JH5$Tz6krP<P^Otec!|!Hr
zhw{OwKgSa#=5Aw7r0iqJ-03be`<^nNKxUTidfx2d%8M=i7bU)XOMOole#4WfI{tqP
z(ITpPNkwZ2W1W>JM*PZ~1Am?tJpQi7A5r{2s6QyN3W+sMVjv{JM|_DzNG!#0;U4(+
zHGVf2J_Ua{27eR$d<^~y_@Bk#7r@_&!CwV`Ee5{`{!R@3=isl?7ha0<C?H-!39WQQ
zr+cB8yd`y(jTrHB`X!k6dSLFyVBQDws~(u&$6#)NneBmj5QCWmbF&BLQ4D4t%m<43
z1LDsQvpnXd#o!sVPy;6}Uv#Oo+qVd#3AdN&9gNT222IReQyuIfG{26aSqGu<o|=!K
zS-|NKznu=QeVU)UOF=)|&^&WBGh(IZCt^e2xSd*hoN#-#zlwV-R&B#$>3hQK-j89&
WlNfgV0>ZEVgB?ZKwgWp8^z=WWOs3la

literal 1187
zcmb7?OHaZ;5XWbE3L+?q;scd<06j=zJW=EzMq@(s0CFWuS#eF-HhmcVSe{Hg_yPP-
z##tz}AWCS`?#}GY??0WL&#(6n062yHI0PXVh21FZ5r|Z{;C7Wjuz1)a5US~2Mj%z^
zg55a%4l|pyqoF5V*Hx;usL7@6Iz#pYx8&Is6U^l5r6W|E>%vk9tQn@RGRtc4zM(NU
zfIy-+3Ra{Zc_t9^JOtLqWnPStRB{wlX*QKA@?#C&6V!H0EUr*#mg|r7iIy}fdZpXW
zBU5dq>PZcAq+Z^w>dr8jd9FL6do65c-c$9b#5~f<b<aPQll#S~Y1Fd3-z>?BJVg6i
z_Mp#%O=Wwg5)WMBh3;U3f9f0OD*tkQl2bJbe`t7xdi9@7^uR}M*L34$Dn8!O9aCkO
zTn<cTawd-D1tlN^VFJsOhv=HTKgdG>CsjTXz{!L#ej{j=a3#2gkKTa1;wAu5Hwf@x
z0r!bv0K_1URty%=6Bs0)p)HdKi9ugt#Ft2536dC;!gq+0o@KOF@C`s3k*l+ji8+vK
kh|J7JrsqJeBXVOlGCKz{i^$E{$lW=RTX-GYgRbs;1Cxd6{Qv*}

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java b/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java
index 323f14d4f0d..5140ed8705f 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/GenericFunctions.java
@@ -1,31 +1,126 @@
 public class GenericFunctions
 {
-  public static <T> void processSimpleGeneric(Generic<T> x)
+
+  //Methods with generic inputs
+  public static <T> void processSimple(Generic<T> x)
   {
 
   }
 
-  // Test a wildcard generic bound by an interface
-  public static <T extends Interface> void processUpperBoundInterfaceGeneric(Generic<T> x)
+  public static <T extends Interface> void processUpperBoundInterface(Generic<T> x)
   {
 
   }
 
-  // Test a wild card generic bound by a class
-  public static <T extends Interface_Implementation> void processUpperBoundClassGeneric(Generic<T> x)
+  public static <T extends Interface_Implementation> void processUpperBoundClass(Generic<T> x)
   {
 
   }
 
-  // Test a wild card generic bound by a class and an interface
-  public static <T extends Interface_Implementation & Interface> void processDoubleUpperBoundClassGeneric(Generic<T> x)
+  public static <T extends Interface_Implementation & Interface> void processDoubleUpperBoundClass(Generic<T> x)
   {
 
   }
 
-  // Test a wild card generic bound by two interfaces
-  public static <T extends Interface & Interface_Copy> void processDoubleUpperBoundInterfaceGeneric(Generic<T> x)
+  public static <T extends Interface & Interface_Copy> void processDoubleUpperBoundInterface(Generic<T> x)
   {
       
   }
+
+  public static <T,U> void processMultipleSimple(Generic<T> t, Generic<U> u)
+  {
+
+  }
+
+  public static <T extends Interface,U extends Interface_Implementation & Interface> void processMultipleUpperBound(Generic<T> t, Generic<U> u)
+  {
+
+  }
+
+  //Methods with generic output
+  public static <T> Generic<T> returnSimple()
+  {
+    Generic<T> x=new Generic<T>();
+    return x;
+  }
+
+  public static <T> T returnSimpleField()
+  {
+    Generic<T> x=new Generic<T>();
+    return x.t;
+  }
+
+  public static <T extends Interface> Generic<T> returnUpperBoundInterface()
+  {
+    Generic<T> x=new Generic<T>();
+    return x;
+  }
+
+  public static <T extends Interface_Implementation> Generic<T> returnUpperBoundClass()
+  {
+    Generic<T> x=new Generic<T>();
+    return x;
+  }
+
+  public static <T extends Interface_Implementation & Interface> Generic<T> returnDoubleUpperBoundClass()
+  {
+    Generic<T> x=new Generic<T>();
+    return x;
+  }
+
+  public static <T extends Interface & Interface_Copy> Generic<T> returnDoubleUpperBoundInterface()
+  {
+    Generic<T> x=new Generic<T>();
+    return x;
+  }
+
+  //Methods with generic input and output
+  public static <T> Generic<T> processReturnSimpleSame(Generic<T> x)
+  {
+    return x;
+  }
+
+  public static <T extends Interface> Generic<T> processReturnUpperBoundInterfaceSame(Generic<T> x)
+  {
+    return x;
+  }
+
+  public static <T extends Interface_Implementation> Generic<T> processReturnUpperBoundClassSame(Generic<T> x)
+  {
+    return x;
+  }
+
+  public static <T extends Interface_Implementation & Interface> Generic<T> processReturnDoubleUpperBoundClassSame(Generic<T> x)
+  {
+    return x;
+  }
+
+  public static <T extends Interface & Interface_Copy> Generic<T> processReturnDoubleUpperBoundInterfaceSame(Generic<T> x)
+  {
+    return x;
+  }
+
+  public static <T,U> Generic<T> processReturnSimpleDifferent(Generic<U> u)
+  {
+    Generic<T> t=new Generic<T>();
+    return t;
+  }
+
+  public static <T extends Interface,U extends Interface_Implementation & Interface> Generic<T> processReturnUpperBoundDifferent(Generic<U> u)
+  {
+    Generic<T> t=new Generic<T>();
+    return t;
+  }
+
+  public static <T,U,V> Generic<T> processReturnMultipleSimpleDifferent(Generic<U> u, Generic<V> v)
+  {
+    Generic<T> t=new Generic<T>();
+    return t;
+  }
+
+  public static <T extends Interface,U extends Interface_Implementation & Interface, V extends Interface_Copy> Generic<T> processReturnMultipleUpperBoundDifferent(Generic<U> u, Generic<V> v)
+  {
+    Generic<T> t=new Generic<T>();
+    return t;
+  }
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
index d01e79b7eaf..547bf4f7395 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
@@ -17,59 +17,1225 @@
 
 #include <iostream>
 #include <testing-utils/load_java_class.h>
+#include <testing-utils/require_type.h>
 
 SCENARIO(
-  "java_bytecode_parse_generic_function",
+  "java_bytecode_parse_generic_functions",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
-  const symbol_tablet &new_symbol_table=
-    load_java_class(
-      "GenericFunctions",
-      "./java_bytecode/java_bytecode_parse_generics");
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "GenericFunctions", "./java_bytecode/java_bytecode_parse_generics");
 
-  std::string class_prefix="java::GenericFunctions";
-  THEN("There should be a symbol for processSimpleGeneric")
+  std::string class_prefix = "java::GenericFunctions";
+
+  WHEN("Parsing processSimple")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processSimple";
+      const std::string func_descriptor = ":(LGeneric;)V";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      THEN("It contains parameter x pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
+
+        THEN("x is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          REQUIRE(
+            generic_param_x.type_variable().get_identifier() ==
+            class_prefix + "::T");
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processUpperBoundInterface")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processUpperBoundInterface";
+      const std::string func_descriptor = ":(LGeneric;)V";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      THEN("It contains parameter x pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
+
+        THEN("x is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          REQUIRE(
+            generic_param_x.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; extend tests when fixed -
+            // issue TG-1286
+          }
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processUpperBoundClass")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processUpperBoundClass";
+      const std::string func_descriptor = ":(LGeneric;)V";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      THEN("It contains parameter x pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
+
+        THEN("x is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          REQUIRE(
+            generic_param_x.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; extend tests when fixed -
+            // issue TG-1286
+          }
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processDoubleUpperBoundClass")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processDoubleUpperBoundClass";
+      const std::string func_descriptor = ":(LGeneric;)V";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      THEN("It contains parameter x pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
+
+        THEN("x is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          REQUIRE(
+            generic_param_x.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; extend the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processDoubleUpperBoundInterface")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processDoubleUpperBoundInterface";
+      const std::string func_descriptor = ":(LGeneric;)V";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      THEN("It contains parameter x pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
+
+        THEN("x is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          REQUIRE(
+            generic_param_x.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; extend the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processMultipleSimple")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processMultipleSimple";
+      const std::string func_descriptor = ":(LGeneric;LGeneric;)V";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
+
+      THEN("It contains parameter t pointing to Generic")
+      {
+        code_typet::parametert param_t =
+          require_type::require_parameter(func_code, "t");
+        require_type::require_pointer(
+          param_t.type(), symbol_typet("java::Generic"));
+
+        THEN("t is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_t.type()));
+
+          const java_generic_typet generic_t =
+            to_java_generic_type(param_t.type());
+          const java_generic_parametert generic_param_t =
+            generic_t.generic_type_variables().front();
+          REQUIRE(
+            generic_param_t.type_variable().get_identifier() ==
+            class_prefix + "::T");
+        }
+      }
+      THEN("It contains parameter u pointing to Generic")
+      {
+        code_typet::parametert param_u =
+          require_type::require_parameter(func_code, "u");
+        require_type::require_pointer(
+          param_u.type(), symbol_typet("java::Generic"));
+
+        THEN("u is generic with type variable U")
+        {
+          REQUIRE(is_java_generic_type(param_u.type()));
+
+          const java_generic_typet generic_u =
+            to_java_generic_type(param_u.type());
+          const java_generic_parametert generic_param_u =
+            generic_u.generic_type_variables().front();
+          REQUIRE(
+            generic_param_u.type_variable().get_identifier() ==
+            class_prefix + "::U");
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processMultipleUpperBound")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processMultipleUpperBound";
+      const std::string func_descriptor = ":(LGeneric;LGeneric;)V";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
+
+      THEN("It contains parameter t pointing to Generic")
+      {
+        code_typet::parametert param_t =
+          require_type::require_parameter(func_code, "t");
+        require_type::require_pointer(
+          param_t.type(), symbol_typet("java::Generic"));
+
+        THEN("t is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_t.type()));
+
+          const java_generic_typet generic_t =
+            to_java_generic_type(param_t.type());
+          const java_generic_parametert generic_param_t =
+            generic_t.generic_type_variables().front();
+          REQUIRE(
+            generic_param_t.type_variable().get_identifier() ==
+            class_prefix + "::T");
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; extend the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+      THEN("It contains parameter u pointing to Generic")
+      {
+        code_typet::parametert param_u =
+          require_type::require_parameter(func_code, "u");
+        require_type::require_pointer(
+          param_u.type(), symbol_typet("java::Generic"));
+
+        THEN("u is generic with type variable U")
+        {
+          REQUIRE(is_java_generic_type(param_u.type()));
+
+          const java_generic_typet generic_u =
+            to_java_generic_type(param_u.type());
+          const java_generic_parametert generic_param_u =
+            generic_u.generic_type_variables().front();
+          REQUIRE(
+            generic_param_u.type_variable().get_identifier() ==
+            class_prefix + "::U");
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; extend the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing returnSimple")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".returnSimple";
+      const std::string func_descriptor = ":()LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing returnSimpleField")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".returnSimpleField";
+      const std::string func_descriptor = ":()Ljava/lang/Object;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      // TODO: should point to something else than Object?? - possibly
+      // connecte dto bounds - issue TG-1286
+      THEN("It has return type pointing to java.lang.Object")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::java.lang.Object"));
+
+        THEN("It is the generic parameter T")
+        {
+          REQUIRE(is_java_generic_parameter(return_type));
+
+          const java_generic_parametert generic_return_param =
+            to_java_generic_parameter(return_type);
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing returnUpperBoundInterface")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".returnUpperBoundInterface";
+      const std::string func_descriptor = ":()LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing returnUpperBoundClass")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".returnUpperBoundClass";
+      const std::string func_descriptor = ":()LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing returnDoubleUpperBoundClass")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".returnDoubleUpperBoundClass";
+      const std::string func_descriptor = ":()LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing returnDoubleUpperBoundInterface")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".returnDoubleUpperBoundInterface";
+      const std::string func_descriptor = ":()LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processReturnSimpleSame")
   {
-    const std::string func_name=".processSimpleGeneric";
-    const std::string func_descriptor = ":(LGeneric;)V";
-    const std::string process_func_name=class_prefix+func_name+func_descriptor;
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnSimpleSame";
+      const std::string func_descriptor = ":(LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+
+      THEN("It contains parameter x pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
 
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+        THEN("x is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          REQUIRE(
+            generic_param_x.type_variable().get_identifier() ==
+            class_prefix + "::T");
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+        }
+      }
+    }
   }
 
-  THEN("There should be a symbol for processUpperBoundInterfaceGeneric")
+  WHEN("Parsing processReturnUpperBoundInterfaceSame")
   {
-    const std::string func_name=".processUpperBoundInterfaceGeneric";
-    const std::string func_descriptor = ":(LGeneric;)V";
-    const std::string process_func_name=class_prefix+func_name+func_descriptor;
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnUpperBoundInterfaceSame";
+      const std::string func_descriptor = ":(LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+
+      THEN("It contains parameter x pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
 
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+        THEN("x is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          REQUIRE(
+            generic_param_x.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
   }
 
-  THEN("There should be a symbol for processUpperBoundClassGeneric")
+  WHEN("Parsing processReturnUpperBoundClassSame")
   {
-    const std::string func_name=".processUpperBoundClassGeneric";
-    const std::string func_descriptor = ":(LGeneric;)V";
-    const std::string process_func_name=class_prefix+func_name+func_descriptor;
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnUpperBoundClassSame";
+      const std::string func_descriptor = ":(LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+
+      THEN("It contains parameter x pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
+
+        THEN("x is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          REQUIRE(
+            generic_param_x.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
 
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
   }
 
-  THEN("There should be a symbol for processDoubleUpperBoundClassGeneric")
+  WHEN("Parsing processReturnDoubleUpperBoundClassSame")
   {
-    const std::string func_name=".processDoubleUpperBoundClassGeneric";
-    const std::string func_descriptor = ":(LGeneric;)V";
-    const std::string process_func_name=class_prefix+func_name+func_descriptor;
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnDoubleUpperBoundClassSame";
+      const std::string func_descriptor = ":(LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+
+      THEN("It contains parameter x pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
+
+        THEN("x is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          REQUIRE(
+            generic_param_x.type_variable().get_identifier() ==
+            class_prefix + "::T");
 
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; extend the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
   }
 
-  THEN("There should be a symbol for processDoubleUpperBoundInterfaceGeneric")
+  WHEN("Parsing processReturnDoubleUpperBoundInterfaceSame")
   {
-    const std::string func_name=".processDoubleUpperBoundInterfaceGeneric";
-    const std::string func_descriptor = ":(LGeneric;)V";
-    const std::string process_func_name=class_prefix+func_name+func_descriptor;
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name =
+        ".processReturnDoubleUpperBoundInterfaceSame";
+      const std::string func_descriptor = ":(LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+
+      THEN("It contains parameter x pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
+
+        THEN("x is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          REQUIRE(
+            generic_param_x.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; extend the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processReturnSimpleDifferent")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnSimpleDifferent";
+      const std::string func_descriptor = ":(LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
+
+      THEN("It contains parameter u pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_u =
+          require_type::require_parameter(func_code, "u");
+        require_type::require_pointer(
+          param_u.type(), symbol_typet("java::Generic"));
+
+        THEN("u is generic with type variable U")
+        {
+          REQUIRE(is_java_generic_type(param_u.type()));
+
+          const java_generic_typet generic_u =
+            to_java_generic_type(param_u.type());
+          const java_generic_parametert generic_param_u =
+            generic_u.generic_type_variables().front();
+          REQUIRE(
+            generic_param_u.type_variable().get_identifier() ==
+            class_prefix + "::U");
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processReturnUpperBoundDifferent")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnUpperBoundDifferent";
+      const std::string func_descriptor = ":(LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
+
+      THEN("It contains parameter u pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        code_typet::parametert param_u =
+          require_type::require_parameter(func_code, "u");
+        require_type::require_pointer(
+          param_u.type(), symbol_typet("java::Generic"));
+
+        THEN("u is generic with type variable U")
+        {
+          REQUIRE(is_java_generic_type(param_u.type()));
+
+          const java_generic_typet generic_u =
+            to_java_generic_type(param_u.type());
+          const java_generic_parametert generic_param_u =
+            generic_u.generic_type_variables().front();
+          REQUIRE(
+            generic_param_u.type_variable().get_identifier() ==
+            class_prefix + "::U");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processReturnMultipleSimpleDifferent")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnMultipleSimpleDifferent";
+      const std::string func_descriptor = ":(LGeneric;LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
+
+      THEN("It contains parameter u pointing to Generic")
+      {
+        code_typet::parametert param_u =
+          require_type::require_parameter(func_code, "u");
+        require_type::require_pointer(
+          param_u.type(), symbol_typet("java::Generic"));
+
+        THEN("u is generic with type variable U")
+        {
+          REQUIRE(is_java_generic_type(param_u.type()));
+
+          const java_generic_typet generic_u =
+            to_java_generic_type(param_u.type());
+          const java_generic_parametert generic_param_u =
+            generic_u.generic_type_variables().front();
+          REQUIRE(
+            generic_param_u.type_variable().get_identifier() ==
+            class_prefix + "::U");
+        }
+      }
+
+      THEN("It contains parameter v pointing to Generic")
+      {
+        code_typet::parametert param_v =
+          require_type::require_parameter(func_code, "v");
+        require_type::require_pointer(
+          param_v.type(), symbol_typet("java::Generic"));
+
+        THEN("v is generic with type variable V")
+        {
+          REQUIRE(is_java_generic_type(param_v.type()));
+
+          const java_generic_typet generic_v =
+            to_java_generic_type(param_v.type());
+          const java_generic_parametert generic_param_v =
+            generic_v.generic_type_variables().front();
+          REQUIRE(
+            generic_param_v.type_variable().get_identifier() ==
+            class_prefix + "::V");
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processReturnMultipleUpperBoundDifferent")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnMultipleUpperBoundDifferent";
+      const std::string func_descriptor = ":(LGeneric;LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
+
+      THEN("It contains parameter u pointing to Generic")
+      {
+        code_typet::parametert param_u =
+          require_type::require_parameter(func_code, "u");
+        require_type::require_pointer(
+          param_u.type(), symbol_typet("java::Generic"));
+
+        THEN("u is generic with type variable U")
+        {
+          REQUIRE(is_java_generic_type(param_u.type()));
+
+          const java_generic_typet generic_u =
+            to_java_generic_type(param_u.type());
+          const java_generic_parametert generic_param_u =
+            generic_u.generic_type_variables().front();
+          REQUIRE(
+            generic_param_u.type_variable().get_identifier() ==
+            class_prefix + "::U");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+
+      THEN("It contains parameter v pointing to Generic")
+      {
+        code_typet::parametert param_v =
+          require_type::require_parameter(func_code, "v");
+        require_type::require_pointer(
+          param_v.type(), symbol_typet("java::Generic"));
+
+        THEN("v is generic with type variable V")
+        {
+          REQUIRE(is_java_generic_type(param_v.type()));
+
+          const java_generic_typet generic_v =
+            to_java_generic_type(param_v.type());
+          const java_generic_parametert generic_param_v =
+            generic_v.generic_type_variables().front();
+          REQUIRE(
+            generic_param_v.type_variable().get_identifier() ==
+            class_prefix + "::V");
+
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const code_typet func_code = to_code_type(func_symbol.type);
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with type variable T")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          REQUIRE(
+            generic_return_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
 
-    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+          THEN("The bounds are set correctly")
+          {
+            // TODO: the bounds are not parsed yet; enable the tests when
+            // fixed - issue TG-1286
+          }
+        }
+      }
+    }
   }
 }

From 9db9947c5fff976821120bb57f024e741c892a1e Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Wed, 25 Oct 2017 17:18:45 +0100
Subject: [PATCH 09/22] Extending test for generic class

---
 .../Generic.class                             | Bin 662 -> 715 bytes
 .../java_bytecode_parse_generics/Generic.java |   1 +
 .../GenericTwoParam.class                     | Bin 0 -> 497 bytes
 .../GenericTwoParam.java                      |   5 +
 .../parse_generic_class.cpp                   | 144 +++++++++++++++---
 5 files changed, 131 insertions(+), 19 deletions(-)
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericTwoParam.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericTwoParam.java

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Generic.class b/unit/java_bytecode/java_bytecode_parse_generics/Generic.class
index 38e44b1b33d9659b0064d08acd800900925c01df..5d5cca07ef3558c9dbf45ee3a9f3a339a304bc8d 100644
GIT binary patch
delta 334
zcmY*UOKJi^6s&F;$DXKBGyal{qgzGYWTyyOiQpv$X$C`>g@}u6Ji{Qk$|bT2xbOhx
z2;N0f?V#f3y?Rxz>s4>9Kg&Oyc6$JCXgRRp*=RVB@Dz)0qZ#|%o(KihbgU!2n9l|R
zjSC)5KY~@z{|utAKZ%w))QiC=o{Zz~V=9OI=1X+e5&~)1tQnq>P(%(Mu5*?gz-=;*
zMDOf^-D>|r{1Bv2U`?M%fg*7>SwM+4z|$S$a#ARxLR(|Eaiyn?L7qlnh79E#6Br}2
i1g=$?&uBJk=VZq6rm3su@^JEtI$tK}886f&UjG4sl^~@6

delta 298
zcmY*Uy9&ZU5S+UZ&%{Jyd_U7Gc6L^RVB-&@mLN73_To2$fUVzP6;RM#zrkM-=L{%v
zusb`mJG=KV4`y(Gov#4K2yB?>D0FQ|bS#FRLO%{h@or{Yi+Qw(w(I32zC8^ah2$uP
zdjWwQ6l0zi5_$-rO2#3YG7DyNkV2dY47iNB4=GS2cCrSP;IS(IF+M8`6;x@f?N-cs
zLFob+rZAFFx{)?4(iprW&*ySP8`rZ|)X0OpBI9wHUh&hcujW(Be$n7$hMH(mmuSBM
D4H_5*

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/Generic.java b/unit/java_bytecode/java_bytecode_parse_generics/Generic.java
index a4905a01ae9..f852bc8f073 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/Generic.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/Generic.java
@@ -1,6 +1,7 @@
 class Generic<T>
 {
   public T t;
+  public Generic<Integer> g;
 
   public static <T> Generic<T> makeGeneric(T value)
   {
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericTwoParam.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericTwoParam.class
new file mode 100644
index 0000000000000000000000000000000000000000..77a3ef12346cb7148b10a7643c05caa744f658af
GIT binary patch
literal 497
zcmZut!A`<J5Pd^|O05DFQEnd9gIqjm)5MtQrBM?K_if$alG2*eYWyruCLa6%Kgu{;
zF_GeB=DoLXW@qN}>-_`3DFzk{^iAxU*e6g<aQvBg62n*|)8TD6lTm(7XpPh~5qXhG
zf)NC)P@&P7QPWk4$~~rsM-xK*GQDS4+gFLaDdwTf0ujcnIDQ(5cp@^T`BJRs4{AZ^
z`qwg%nTmqv^iE`A&VBo<{+Gw!nnBg<@<cp}$3?CioUJb~{zvoHZ3JtS7Fi^(lpeTO
zndw9y#)gGWUa#^-=v2>!1JwAq;K)}&gJZK~CZml%yu}>4EoYn21!t`^j^9A93=C{>
dY?dNno3Z_4KpP!q-4(@QR$G3xgI>vYzX5`NY>EH?

literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericTwoParam.java b/unit/java_bytecode/java_bytecode_parse_generics/GenericTwoParam.java
new file mode 100644
index 00000000000..c1deb233dd0
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/GenericTwoParam.java
@@ -0,0 +1,5 @@
+class GenericTwoParam<T,U>
+{
+  public T t;
+  public U u;
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
index d2c59edef85..71382448c82 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
@@ -9,6 +9,7 @@
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
 #include <testing-utils/require_symbol.h>
+#include <testing-utils/require_type.h>
 
 #include <istream>
 #include <memory>
@@ -19,43 +20,148 @@
 #include <java_bytecode/java_bytecode_language.h>
 
 SCENARIO(
-  "java_bytecode_parse_generic_class",
+  "java_bytecode_parse_generic_class_one_param",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table =
     load_java_class("Generic", "./java_bytecode/java_bytecode_parse_generics");
 
   std::string class_prefix = "java::Generic";
-  REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
   WHEN("Parsing the class")
   {
-    REQUIRE(new_symbol_table.has_symbol(class_prefix));
-    THEN("The class symbol is generic")
+    THEN("There is a generic class symbol Generic")
     {
+      REQUIRE(new_symbol_table.has_symbol(class_prefix));
+
       const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
       class_typet class_type =
         require_symbol::require_complete_class(class_symbol);
-      java_class_typet java_class_type = to_java_class_type(class_type);
-
-      REQUIRE(is_java_generics_class_type(java_class_type));
       java_generics_class_typet java_generics_class_type =
-        to_java_generics_class_type(java_class_type);
+        require_type::require_java_generic_class(class_type);
 
-      THEN("The type variable is T")
+      THEN("It has type variable T")
       {
-        REQUIRE(java_generics_class_type.generic_types().size()==1);
-        typet &type_var=java_generics_class_type.generic_types().front();
-        REQUIRE(is_java_generic_parameter(type_var));
-        java_generic_parametert generic_type_var=
-          to_java_generic_parameter(type_var);
+        REQUIRE(java_generics_class_type.generic_types().size() == 1);
+        const auto &generic_types = java_generics_class_type.generic_types();
+
         REQUIRE(
-          generic_type_var.type_variable().get_identifier() ==
+          generic_types[0].type_variable().get_identifier() ==
           class_prefix + "::T");
-        typet &sub_type = generic_type_var.subtype();
-        REQUIRE(sub_type.id() == ID_symbol);
-        symbol_typet &bound_type = to_symbol_type(sub_type);
-        REQUIRE(bound_type.get_identifier() == "java::java.lang.Object");
+      }
+
+      const struct_typet class_struct = to_struct_type(class_symbol.type);
+      THEN("It has field t")
+      {
+        struct_union_typet::componentt field_t =
+          require_type::require_component(class_struct, "t");
+
+        THEN("It is the generic parameter T")
+        {
+          REQUIRE(is_java_generic_parameter(field_t.type()));
+
+          const java_generic_parametert field_t_param =
+            to_java_generic_parameter(field_t.type());
+          REQUIRE(
+            field_t_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+        }
+      }
+
+      THEN("It has field g pointing to Generic")
+      {
+        struct_union_typet::componentt field_g =
+          require_type::require_component(class_struct, "g");
+        require_type::require_pointer(
+          field_g.type(), symbol_typet("java::Generic"));
+
+        THEN("It is generic with parameter pointing to java.lang.Integer")
+        {
+          REQUIRE(is_java_generic_type(field_g.type()));
+
+          const java_generic_typet generic_field_g =
+            to_java_generic_type(field_g.type());
+          const java_generic_parametert generic_param_field_g =
+            generic_field_g.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_param_field_g, symbol_typet("java::java.lang.Integer"));
+        }
+      }
+    }
+  }
+}
+
+SCENARIO(
+  "java_bytecode_parse_generic_class_two_param",
+  "[core][java_bytecode][java_bytecode_parse_generics]")
+{
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "GenericTwoParam", "./java_bytecode/java_bytecode_parse_generics");
+
+  std::string class_prefix = "java::GenericTwoParam";
+
+  WHEN("Parsing the class")
+  {
+    THEN("There is a generic class symbol GenericTwoParam")
+    {
+      REQUIRE(new_symbol_table.has_symbol(class_prefix));
+
+      const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
+      class_typet class_type =
+        require_symbol::require_complete_class(class_symbol);
+      java_generics_class_typet java_generics_class_type =
+        require_type::require_java_generic_class(class_type);
+
+      THEN("It has type variables T and U")
+      {
+        REQUIRE(java_generics_class_type.generic_types().size() == 2);
+        const auto &generic_types = java_generics_class_type.generic_types();
+        {
+          const java_generic_parametert &generic_param = generic_types[0];
+          REQUIRE(
+            generic_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+        }
+        {
+          const java_generic_parametert &generic_param = generic_types[1];
+          REQUIRE(
+            generic_param.type_variable().get_identifier() ==
+            class_prefix + "::U");
+        }
+      }
+
+      const struct_typet class_struct = to_struct_type(class_symbol.type);
+      THEN("It has field t")
+      {
+        struct_union_typet::componentt field_t =
+          require_type::require_component(class_struct, "t");
+
+        THEN("It is the generic parameter T")
+        {
+          REQUIRE(is_java_generic_parameter(field_t.type()));
+
+          const java_generic_parametert field_t_param =
+            to_java_generic_parameter(field_t.type());
+          REQUIRE(
+            field_t_param.type_variable().get_identifier() ==
+            class_prefix + "::T");
+        }
+      }
+      THEN("It has field u")
+      {
+        struct_union_typet::componentt field_u =
+          require_type::require_component(class_struct, "u");
+
+        THEN("It is the generic parameter U")
+        {
+          REQUIRE(is_java_generic_parameter(field_u.type()));
+
+          const java_generic_parametert field_u_param =
+            to_java_generic_parameter(field_u.type());
+          REQUIRE(
+            field_u_param.type_variable().get_identifier() ==
+            class_prefix + "::U");
+        }
       }
     }
   }

From c9a371618d0d6f95e1a4c7fe9eb4d8df325c099c Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Thu, 26 Oct 2017 16:04:48 +0100
Subject: [PATCH 10/22] Adding unit test for functions with generics

---
 .../FunctionsWithGenerics$Inner.class         | Bin 0 -> 540 bytes
 .../FunctionsWithGenerics.class               | Bin 0 -> 1715 bytes
 .../FunctionsWithGenerics.java                |  36 ++
 .../parse_functions_with_generics.cpp         | 339 ++++++++++++++++++
 4 files changed, 375 insertions(+)
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/FunctionsWithGenerics$Inner.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/FunctionsWithGenerics.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/FunctionsWithGenerics.java
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/FunctionsWithGenerics$Inner.class b/unit/java_bytecode/java_bytecode_parse_generics/FunctionsWithGenerics$Inner.class
new file mode 100644
index 0000000000000000000000000000000000000000..e2e3053da11ba24c61fc4e4642edd5977ed0fc2a
GIT binary patch
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zoc!`bZ_S^0Kj3QFpQ=PGMKl<ZxR|VD+__|Ec#~B5i40YIFO${AF4mHvR5BScG`s(3
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V^qCtY_JELq8mbvf<KYl{z&Fn1eSiP}

literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/FunctionsWithGenerics.class b/unit/java_bytecode/java_bytecode_parse_generics/FunctionsWithGenerics.class
new file mode 100644
index 0000000000000000000000000000000000000000..359c9a35a1c853e917535301b659e58e60b409da
GIT binary patch
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literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/FunctionsWithGenerics.java b/unit/java_bytecode/java_bytecode_parse_generics/FunctionsWithGenerics.java
new file mode 100644
index 00000000000..f27071a43f8
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/FunctionsWithGenerics.java
@@ -0,0 +1,36 @@
+public class FunctionsWithGenerics
+{
+
+  class Inner
+  {
+    public Generic<Integer> x;
+  }
+
+  public static Generic<Integer> processReturnSame(Generic<Integer> x)
+  {
+    return x;
+  }
+
+  public static Generic<Integer> processReturnDifferent(Generic<String> s)
+  {
+    Generic<Integer> x = new Generic<Integer>();
+    return x;
+  }
+
+  public static Generic<Integer> processReturnMultipleSame(Generic<Integer> x, Generic<Integer> y)
+  {
+    return x;
+  }
+
+  public static Generic<Integer> processReturnMultipleDifferent(Generic<String> s, Generic<Boolean> b)
+  {
+    Generic<Integer> x = new Generic<Integer>();
+    return x;
+  }
+
+  public Generic<Integer> returnInnerField(Inner inner)
+  {
+    return inner.x;
+  }
+
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp
new file mode 100644
index 00000000000..15326342597
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp
@@ -0,0 +1,339 @@
+/*******************************************************************\
+
+ Module: Unit tests for parsing generic classes
+
+ Author: DiffBlue Limited. All rights reserved.
+
+\*******************************************************************/
+
+#include <testing-utils/catch.hpp>
+
+#include <util/config.h>
+#include <util/cmdline.h>
+#include <util/language.h>
+#include <util/prefix.h>
+
+#include <java_bytecode/java_bytecode_language.h>
+
+#include <iostream>
+#include <testing-utils/load_java_class.h>
+#include <testing-utils/require_type.h>
+
+SCENARIO(
+  "java_bytecode_parse_functions_with_generics",
+  "[core][java_bytecode][java_bytecode_parse_generics]")
+{
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "FunctionsWithGenerics", "./java_bytecode/java_bytecode_parse_generics");
+
+  std::string class_prefix = "java::FunctionsWithGenerics";
+
+  WHEN("Parsing processReturnSame")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnSame";
+      const std::string func_descriptor = ":(LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
+
+      THEN("It has parameter x pointing to Generic")
+      {
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
+
+        THEN("x is generic with parameter pointing to java.lang.Integer")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_param_x, symbol_typet("java::java.lang.Integer"));
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with parameter pointing to java.lang.Integer")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_return_param, symbol_typet("java::java.lang.Integer"));
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processReturnDifferent")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnDifferent";
+      const std::string func_descriptor = ":(LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
+
+      THEN("It has parameter s pointing to Generic")
+      {
+        code_typet::parametert param_s =
+          require_type::require_parameter(func_code, "s");
+        require_type::require_pointer(
+          param_s.type(), symbol_typet("java::Generic"));
+
+        THEN("s is generic with parameter pointing to java.lang.String")
+        {
+          REQUIRE(is_java_generic_type(param_s.type()));
+
+          const java_generic_typet generic_s =
+            to_java_generic_type(param_s.type());
+          const java_generic_parametert generic_param_s =
+            generic_s.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_param_s, symbol_typet("java::java.lang.String"));
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with parameter pointing to java.lang.Integer")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_return_param, symbol_typet("java::java.lang.Integer"));
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processReturnMultipleSame")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnMultipleSame";
+      const std::string func_descriptor = ":(LGeneric;LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
+
+      THEN("It has parameter x pointing to Generic")
+      {
+        code_typet::parametert param_x =
+          require_type::require_parameter(func_code, "x");
+        require_type::require_pointer(
+          param_x.type(), symbol_typet("java::Generic"));
+
+        THEN("x is generic with parameter pointing to java.lang.Integer")
+        {
+          REQUIRE(is_java_generic_type(param_x.type()));
+
+          const java_generic_typet generic_x =
+            to_java_generic_type(param_x.type());
+          const java_generic_parametert generic_param_x =
+            generic_x.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_param_x, symbol_typet("java::java.lang.Integer"));
+        }
+      }
+
+      THEN("It has parameter y pointing to Generic")
+      {
+        code_typet::parametert param_y =
+          require_type::require_parameter(func_code, "y");
+        require_type::require_pointer(
+          param_y.type(), symbol_typet("java::Generic"));
+
+        THEN("y is generic with parameter pointing to java.lang.Integer")
+        {
+          REQUIRE(is_java_generic_type(param_y.type()));
+
+          const java_generic_typet generic_y =
+            to_java_generic_type(param_y.type());
+          const java_generic_parametert generic_param_y =
+            generic_y.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_param_y, symbol_typet("java::java.lang.Integer"));
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with parameter pointing to java.lang.Integer")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_return_param, symbol_typet("java::java.lang.Integer"));
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing processReturnMultipleDifferent")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".processReturnMultipleDifferent";
+      const std::string func_descriptor = ":(LGeneric;LGeneric;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
+
+      THEN("It has parameter s pointing to Generic")
+      {
+        code_typet::parametert param_s =
+          require_type::require_parameter(func_code, "s");
+        require_type::require_pointer(
+          param_s.type(), symbol_typet("java::Generic"));
+
+        THEN("s is generic with parameter pointing to java.lang.String")
+        {
+          REQUIRE(is_java_generic_type(param_s.type()));
+
+          const java_generic_typet generic_s =
+            to_java_generic_type(param_s.type());
+          const java_generic_parametert generic_param_s =
+            generic_s.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_param_s, symbol_typet("java::java.lang.String"));
+        }
+      }
+
+      THEN("It has parameter b pointing to Generic")
+      {
+        code_typet::parametert param_b =
+          require_type::require_parameter(func_code, "b");
+        require_type::require_pointer(
+          param_b.type(), symbol_typet("java::Generic"));
+
+        THEN("b is generic with parameter pointing to java.lang.Boolean")
+        {
+          REQUIRE(is_java_generic_type(param_b.type()));
+
+          const java_generic_typet generic_b =
+            to_java_generic_type(param_b.type());
+          const java_generic_parametert generic_param_b =
+            generic_b.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_param_b, symbol_typet("java::java.lang.Boolean"));
+        }
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with parameter pointing to java.lang.Integer")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_return_param, symbol_typet("java::java.lang.Integer"));
+        }
+      }
+    }
+  }
+
+  WHEN("Parsing returnInnerField")
+  {
+    THEN("There should be a symbol for the function")
+    {
+      const std::string func_name = ".returnInnerField";
+      const std::string func_descriptor =
+        ":(LFunctionsWithGenerics$Inner;)LGeneric;";
+      const std::string process_func_name =
+        class_prefix + func_name + func_descriptor;
+
+      REQUIRE(new_symbol_table.has_symbol(process_func_name));
+
+      const symbolt func_symbol =
+        new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
+
+      THEN("It has parameter inner pointing to Inner")
+      {
+        code_typet::parametert param_inner =
+          require_type::require_parameter(func_code, "inner");
+        require_type::require_pointer(
+          param_inner.type(), symbol_typet(class_prefix + "$Inner"));
+      }
+
+      THEN("It has return type pointing to Generic")
+      {
+        const typet return_type = func_code.return_type();
+        require_type::require_pointer(
+          return_type, symbol_typet("java::Generic"));
+
+        THEN("It is generic with parameter pointing to java.lang.Integer")
+        {
+          REQUIRE(is_java_generic_type(return_type));
+
+          const java_generic_typet generic_return_type =
+            to_java_generic_type(return_type);
+          const java_generic_parametert generic_return_param =
+            generic_return_type.generic_type_variables().front();
+          require_type::require_pointer(
+            generic_return_param, symbol_typet("java::java.lang.Integer"));
+        }
+      }
+    }
+  }
+}

From de97e23f94f61ada44b52646ab8a6e4901b5397e Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Fri, 27 Oct 2017 15:07:07 +0100
Subject: [PATCH 11/22] Adding unit test for nested generics

---
 .../NestedGenerics.class                      |  Bin 0 -> 6184 bytes
 .../NestedGenerics.java                       |  152 ++
 .../parse_nested_generics.cpp                 | 1358 +++++++++++++++++
 3 files changed, 1510 insertions(+)
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/NestedGenerics.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/NestedGenerics.java
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/NestedGenerics.class b/unit/java_bytecode/java_bytecode_parse_generics/NestedGenerics.class
new file mode 100644
index 0000000000000000000000000000000000000000..8b73e5e887c47022bdd0406f1bac5aaf11aeaec7
GIT binary patch
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diff --git a/unit/java_bytecode/java_bytecode_parse_generics/NestedGenerics.java b/unit/java_bytecode/java_bytecode_parse_generics/NestedGenerics.java
new file mode 100644
index 00000000000..a4c1a469911
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/NestedGenerics.java
@@ -0,0 +1,152 @@
+public class NestedGenerics
+{
+  Generic<Generic<Interface_Implementation>> field;
+  Generic<Generic<Integer>> field2;
+
+  Generic<Generic<Generic<Interface_Implementation>>> field3;
+  Generic<Generic<Generic<Integer>>> field4;
+
+  Generic<GenericTwoParam<Interface_Implementation,Interface_Implementation>> field5;
+  Generic<GenericTwoParam<Interface_Implementation,Integer>> field6;
+  Generic<GenericTwoParam<Integer,Integer>> field7;
+
+  GenericTwoParam<Generic<Interface_Implementation>, Generic<Interface_Implementation>> field8;
+  GenericTwoParam<Generic<Interface_Implementation>, Generic<Integer>> field9;
+  GenericTwoParam<Generic<Integer>, Generic<Integer>> field10;
+
+  GenericTwoParam<Generic<Integer>, Interface_Implementation> field11;
+  GenericTwoParam<Generic<Generic<Integer>>, Interface_Implementation> field12;
+
+  GenericTwoParam<GenericTwoParam<Interface_Implementation,Integer>, Generic<Integer>> field13;
+
+  void method(Generic<Generic<Interface_Implementation>> input)
+  {
+
+  }
+
+  void method2(Generic<Generic<Integer>> input)
+  {
+
+  }
+
+  void method3(Generic<Generic<Generic<Interface_Implementation>>> input)
+  {
+
+  }
+
+  void method4(Generic<Generic<Generic<Integer>>> input)
+  {
+
+  }
+
+  void method5(Generic<GenericTwoParam<Interface_Implementation,Interface_Implementation>> input)
+  {
+
+  }
+
+  void method6(Generic<GenericTwoParam<Interface_Implementation,Integer>> input)
+  {
+
+  }
+
+  void method7(Generic<GenericTwoParam<Integer,Integer>> input)
+  {
+
+  }
+
+  void method8(GenericTwoParam<Generic<Interface_Implementation>, Generic<Interface_Implementation>> input)
+  {
+
+  }
+
+  void method9(GenericTwoParam<Generic<Interface_Implementation>, Generic<Integer>> input)
+  {
+
+  }
+
+  void method10(GenericTwoParam<Generic<Integer>, Generic<Integer>> input)
+  {
+
+  }
+
+  void method11(GenericTwoParam<Generic<Integer>, Interface_Implementation> input)
+  {
+
+  }
+  void method12(GenericTwoParam<Generic<Generic<Integer>>, Interface_Implementation> input)
+  {
+
+  }
+
+  void method13(GenericTwoParam<GenericTwoParam<Interface_Implementation,Integer>, Generic<Integer>> input)
+  {
+
+  }
+
+
+  Generic<Generic<Interface_Implementation>> ret_method()
+  {
+    return null;
+  }
+
+  Generic<Generic<Integer>> ret_method2()
+  {
+    return null;
+  }
+
+  Generic<Generic<Generic<Interface_Implementation>>> ret_method3()
+  {
+    return null;
+  }
+
+  Generic<Generic<Generic<Integer>>> ret_method4()
+  {
+    return null;
+  }
+
+  Generic<GenericTwoParam<Interface_Implementation,Interface_Implementation>> ret_method5()
+  {
+    return null;
+  }
+
+  Generic<GenericTwoParam<Interface_Implementation,Integer>> ret_method6()
+  {
+    return null;
+  }
+
+  Generic<GenericTwoParam<Integer,Integer>> ret_method7()
+  {
+    return null;
+  }
+
+  GenericTwoParam<Generic<Interface_Implementation>, Generic<Interface_Implementation>> ret_method8()
+  {
+    return null;
+  }
+
+  GenericTwoParam<Generic<Interface_Implementation>, Generic<Integer>> ret_method9()
+  {
+    return null;
+  }
+
+  GenericTwoParam<Generic<Integer>, Generic<Integer>> ret_method10()
+  {
+    return null;
+  }
+
+  GenericTwoParam<Generic<Integer>, Interface_Implementation> ret_method11()
+  {
+    return null;
+  }
+
+  GenericTwoParam<Generic<Generic<Integer>>, Interface_Implementation> ret_method12()
+  {
+    return null;
+  }
+
+  GenericTwoParam<GenericTwoParam<Interface_Implementation,Integer>, Generic<Integer>> ret_method13()
+  {
+    return null;
+  }
+
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp
new file mode 100644
index 00000000000..58aeb250667
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp
@@ -0,0 +1,1358 @@
+/*******************************************************************\
+
+ Module: Unit tests for parsing generic classes
+
+ Author: DiffBlue Limited. All rights reserved.
+
+\*******************************************************************/
+
+#include <testing-utils/catch.hpp>
+#include <testing-utils/require_symbol.h>
+#include <testing-utils/require_type.h>
+
+#include <util/cmdline.h>
+#include <util/config.h>
+#include <util/language.h>
+#include <util/prefix.h>
+#include <util/std_types.h>
+
+#include <java_bytecode/java_bytecode_language.h>
+
+#include <iostream>
+#include <testing-utils/load_java_class.h>
+
+SCENARIO(
+  "parse_nested_generics_fields",
+  "[core][java_bytecode][java_bytecode_parse_generics]")
+{
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "NestedGenerics", "./java_bytecode/java_bytecode_parse_generics");
+
+  std::string class_prefix = "java::NestedGenerics";
+  THEN("There should be a symbol for NestedGenerics with correct components")
+  {
+    REQUIRE(new_symbol_table.has_symbol(class_prefix));
+    const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
+
+    const class_typet &class_type =
+      require_symbol::require_complete_class(class_symbol);
+
+    THEN("The field component should be a pointer to java::Generic")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 1);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field2 component should be a pointer to java::Generic")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field2");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 1);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field3 component should be a pointer to java::Generic")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field3");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 1);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field4 component should be a pointer to java::Generic")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field4");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 1);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field5 component should be a pointer to java::Generic")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field5");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 1);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::GenericTwoParam")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field6 component should be a pointer to java::Generic")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field6");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 1);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::GenericTwoParam")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field7 component should be a pointer to java::Generic")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field7");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 1);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::GenericTwoParam")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field8 component should be a pointer to java::GenericTwoParam")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field8");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 2);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field9 component should be a pointer to java::GenericTwoParam")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field9");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 2);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field10 component should be a pointer to java::GenericTwoParam")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field10");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 2);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field11 component should be a pointer to java::GenericTwoParam")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field11");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 2);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::Interface_Implementation")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field12 component should be a pointer to java::GenericTwoParam")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field12");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 2);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::Interface_Implementation")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+
+    THEN("The field13 component should be a pointer to java::GenericTwoParam")
+    {
+      const struct_typet::componentt &field_component =
+        require_type::require_component(class_type, "field13");
+
+      require_type::require_pointer(
+        field_component.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
+      {
+        REQUIRE(is_java_generic_type(field_component.type()));
+        const auto &generic_variables =
+          to_java_generic_type(field_component.type()).generic_type_variables();
+        REQUIRE(generic_variables.size() == 2);
+        {
+          const java_generic_parametert &generic_param = generic_variables[0];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param == java_generic_inst_parametert(
+                               symbol_typet("java::GenericTwoParam")));
+        }
+        {
+          const java_generic_parametert &generic_param = generic_variables[1];
+          REQUIRE(is_java_generic_parameter(generic_param));
+          REQUIRE(
+            generic_param ==
+            java_generic_inst_parametert(symbol_typet("java::Generic")));
+        }
+        // TODO: extend tests when nested generics are parsed correctly
+      }
+    }
+  }
+}
+
+SCENARIO(
+  "parse_nested_generics_methods",
+  "[core][java_bytecode][java_bytecode_parse_generics]")
+{
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "NestedGenerics", "./java_bytecode/java_bytecode_parse_generics");
+
+  std::string class_prefix = "java::NestedGenerics";
+
+  THEN("Method 1 should take a pointer to java::Generic")
+  {
+    const std::string func_name = ".method";
+    const std::string func_descriptor = ":(LGeneric;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::Generic")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 2 should take a pointer to java::Generic")
+  {
+    const std::string func_name = ".method2";
+    const std::string func_descriptor = ":(LGeneric;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::Generic")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 3 should take a pointer to java::Generic")
+  {
+    const std::string func_name = ".method3";
+    const std::string func_descriptor = ":(LGeneric;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::Generic")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 4 should take a pointer to java::Generic")
+  {
+    const std::string func_name = ".method4";
+    const std::string func_descriptor = ":(LGeneric;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::Generic")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 5 should take a pointer to java::Generic")
+  {
+    const std::string func_name = ".method5";
+    const std::string func_descriptor = ":(LGeneric;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 6 should take a pointer to java::Generic")
+  {
+    const std::string func_name = ".method6";
+    const std::string func_descriptor = ":(LGeneric;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 7 should take a pointer to java::Generic")
+  {
+    const std::string func_name = ".method7";
+    const std::string func_descriptor = ":(LGeneric;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 8 should take a pointer to java::GenericTwoParam")
+  {
+    const std::string func_name = ".method8";
+    const std::string func_descriptor = ":(LGenericTwoParam;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 9 should take a pointer to java::GenericTwoParam")
+  {
+    const std::string func_name = ".method9";
+    const std::string func_descriptor = ":(LGenericTwoParam;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 10 should take a pointer to java::GenericTwoParam")
+  {
+    const std::string func_name = ".method10";
+    const std::string func_descriptor = ":(LGenericTwoParam;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 11 should take a pointer to java::GenericTwoParam")
+  {
+    const std::string func_name = ".method11";
+    const std::string func_descriptor = ":(LGenericTwoParam;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 12 should take a pointer to java::GenericTwoParam")
+  {
+    const std::string func_name = ".method12";
+    const std::string func_descriptor = ":(LGenericTwoParam;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Method 13 should take a pointer to java::GenericTwoParam")
+  {
+    const std::string func_name = ".method13";
+    const std::string func_descriptor = ":(LGenericTwoParam;)V";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    const auto param_type =
+      require_type::require_parameter(function_call, "input");
+    require_type::require_pointer(
+      param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(param_type.type()));
+      const auto &generic_variables =
+        to_java_generic_type(param_type.type()).generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 1 should return a java::Generic")
+  {
+    const std::string func_name = ".ret_method";
+    const std::string func_descriptor = ":()LGeneric;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::Generic")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 2 should return a java::Generic")
+  {
+    const std::string func_name = ".ret_method2";
+    const std::string func_descriptor = ":()LGeneric;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::Generic")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 3 should return a java::Generic")
+  {
+    const std::string func_name = ".ret_method3";
+    const std::string func_descriptor = ":()LGeneric;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::Generic")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 4 should return a java::Generic")
+  {
+    const std::string func_name = ".ret_method4";
+    const std::string func_descriptor = ":()LGeneric;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::Generic")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 5 should return a java::Generic")
+  {
+    const std::string func_name = ".ret_method5";
+    const std::string func_descriptor = ":()LGeneric;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 6 should return a java::Generic")
+  {
+    const std::string func_name = ".ret_method6";
+    const std::string func_descriptor = ":()LGeneric;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 7 should return a java::Generic")
+  {
+    const std::string func_name = ".ret_method7";
+    const std::string func_descriptor = ":()LGeneric;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::Generic"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 1);
+      const java_generic_parametert &generic_param = generic_variables[0];
+      REQUIRE(
+        generic_param ==
+        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 8 should return a java::GenericTwoParam")
+  {
+    const std::string func_name = ".ret_method8";
+    const std::string func_descriptor = ":()LGenericTwoParam;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 9 should return a java::GenericTwoParam")
+  {
+    const std::string func_name = ".ret_method9";
+    const std::string func_descriptor = ":()LGenericTwoParam;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 10 should return a java::GenericTwoParam")
+  {
+    const std::string func_name = ".ret_method10";
+    const std::string func_descriptor = ":()LGenericTwoParam;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 11 should return a java::GenericTwoParam")
+  {
+    const std::string func_name = ".ret_method11";
+    const std::string func_descriptor = ":()LGenericTwoParam;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 12 should return a java::GenericTwoParam")
+  {
+    const std::string func_name = ".ret_method12";
+    const std::string func_descriptor = ":()LGenericTwoParam;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param == java_generic_inst_parametert(
+                             symbol_typet("java::Interface_Implementation")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+
+  THEN("Ret Method 13 should return a java::GenericTwoParam")
+  {
+    const std::string func_name = ".ret_method13";
+    const std::string func_descriptor = ":()LGenericTwoParam;";
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
+
+    REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    const symbolt &function_symbol =
+      new_symbol_table.lookup_ref(process_func_name);
+
+    const code_typet &function_call =
+      require_type::require_code(function_symbol.type);
+
+    require_type::require_pointer(
+      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+    THEN("The pointer should be generic")
+    {
+      REQUIRE(is_java_generic_type(function_call.return_type()));
+      const auto &generic_variables =
+        to_java_generic_type(function_call.return_type())
+          .generic_type_variables();
+      REQUIRE(generic_variables.size() == 2);
+      {
+        const java_generic_parametert &generic_param = generic_variables[0];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
+      }
+      {
+        const java_generic_parametert &generic_param = generic_variables[1];
+        REQUIRE(
+          generic_param ==
+          java_generic_inst_parametert(symbol_typet("java::Generic")));
+      }
+      // TODO: extend tests when nested generics are parsed correctly
+    }
+  }
+}

From 2883bb14d4dc19a5499308f8de08a38ae8775293 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Tue, 31 Oct 2017 14:45:45 +0000
Subject: [PATCH 12/22] Extending test for generic arrays

---
 .../GenericArray.class                        | Bin 438 -> 545 bytes
 .../GenericArray.java                         |   2 +
 .../parse_generic_array_class.cpp             | 123 ++++++++++++++----
 3 files changed, 103 insertions(+), 22 deletions(-)

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.class
index e46b7d90e4081f3cdba0c89dc0a2a052c03798bb..a54e0e2fd5a7d64b1a9ad5f2d73336bfe6aa6743 100644
GIT binary patch
delta 245
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z!#Oq~A=Y+45vCGjMh1C=uuoQES)zVUVqUtwXI@EadTNoi-9*RB%)AVIlf@aeZJ8Mu
z8CV!tfg~HyP9_F+Aj!eN3FmVG`P@i+9-s^Z15h`R=ARtTDCQ^t<g<ZA85snDY={b0
Z1|bGvAWsBEL=?zlg4!g;AP(k9006NuAv*v7

delta 157
zcmZ3;vW;2v)W2Q(7#J8#7{s|4m>ERa8ARC`#3qXBPwc<I%)!7pIf+rbgpq-ffrWt;
zNU{NyGBL0NSquz7Ss={?WH|z9kO-^Rb_T|cKn61dH;`ll3o<hB0NFec1q{3ld_W#Q
SiiiM^#{@N6kU<E{69xbVJ`AY<

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.java b/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.java
index 53dc4b81b3c..0e7d24ea98a 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.java
+++ b/unit/java_bytecode/java_bytecode_parse_generics/GenericArray.java
@@ -1,4 +1,6 @@
 class GenericArray<T>
 {
   public T [] t;
+  Generic<T>[] t2;
+  Generic<Integer>[] t3;
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
index 70fe6085448..236b4de152f 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
@@ -15,9 +15,8 @@
 
 #include <java_bytecode/java_bytecode_language.h>
 #include <testing-utils/load_java_class.h>
-
-#include <iostream>
-#include <util/namespace.h>
+#include <testing-utils/require_type.h>
+#include <testing-utils/require_symbol.h>
 
 SCENARIO(
   "java_bytecode_parse_generic_array_class",
@@ -27,34 +26,114 @@ SCENARIO(
     "GenericArray", "./java_bytecode/java_bytecode_parse_generics");
 
   std::string class_prefix = "java::GenericArray";
-
   REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
-  const struct_typet &type =
-    to_struct_type(new_symbol_table.lookup_ref(class_prefix).type);
+  const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
+  const class_typet &class_type =
+    require_symbol::require_complete_class(class_symbol);
 
-  THEN("There should be a component with name t")
+  THEN("There should be field t")
   {
-    REQUIRE(type.has_component("t"));
+    struct_union_typet::componentt field_t =
+      require_type::require_component(class_type, "t");
+
+    THEN("It is an array")
+    {
+      pointer_typet field_t_pointer =
+        require_type::require_pointer(
+          field_t.type(),
+          symbol_typet("java::array[reference]"));
+
+      const symbol_typet &field_t_subtype =
+        to_symbol_type(field_t_pointer.subtype());
+      const struct_typet &subtype_type = to_struct_type(
+        new_symbol_table.lookup_ref(field_t_subtype.get_identifier()).type);
+      REQUIRE(is_valid_java_array(subtype_type));
+
+      THEN("The elements have the parametric type T")
+      {
+        const typet &element = field_t_subtype.find_type(ID_C_element_type);
+        REQUIRE(is_java_generic_parameter(element));
+        java_generic_parametert element_parameter =
+          to_java_generic_parameter(element);
+        REQUIRE(element_parameter.type_variable().get_identifier() ==
+                class_prefix + "::T");
+      }
+    }
   }
 
-  const pointer_typet &t_component =
-    to_pointer_type(type.get_component("t").type());
-  const symbol_typet &subtype = to_symbol_type(t_component.subtype());
-  THEN("The t component is a valid java array")
+  THEN("There should be field t2")
   {
-    const struct_typet &subtype_type = to_struct_type(
-      new_symbol_table.lookup_ref(subtype.get_identifier()).type);
-    REQUIRE(is_valid_java_array(subtype_type));
+    struct_union_typet::componentt field_t2 =
+      require_type::require_component(class_type, "t2");
+
+    THEN("It is an array")
+    {
+      pointer_typet field_t2_pointer =
+        require_type::require_pointer(
+          field_t2.type(),
+          symbol_typet("java::array[reference]"));
+
+      const symbol_typet &field_t2_subtype =
+        to_symbol_type(field_t2_pointer.subtype());
+      const struct_typet &subtype_struct = to_struct_type(
+        new_symbol_table.lookup_ref(field_t2_subtype.get_identifier()).type);
+      REQUIRE(is_valid_java_array(subtype_struct));
+
+      THEN("The elements have type Generic<T>")
+      {
+        const typet &element = field_t2_subtype.find_type(ID_C_element_type);
+        REQUIRE(is_java_generic_type(element));
+        const java_generic_typet generic_element =
+          to_java_generic_type(element);
+        require_type::require_pointer(
+          generic_element, symbol_typet
+            ("java::Generic"));
+
+        REQUIRE(is_java_generic_parameter(
+          generic_element.generic_type_variables().front()));
+        java_generic_parametert parameter =
+          generic_element.generic_type_variables().front();
+        REQUIRE(parameter.type_variable().get_identifier() ==
+                class_prefix + "::T");
+      }
+    }
   }
 
-  THEN("The elements of the t component have the parametric type T")
+  THEN("There should be field t3")
   {
-    const typet &element =
-      static_cast<const typet &>(subtype.find(ID_C_element_type));
-    REQUIRE(is_java_generic_parameter(element));
-    REQUIRE(
-      to_java_generic_parameter(element).type_variable().get_identifier() ==
-      "java::GenericArray::T");
+    struct_union_typet::componentt field_t3 =
+      require_type::require_component(class_type, "t3");
+
+    THEN("It is an array")
+    {
+      pointer_typet field_t3_pointer =
+        require_type::require_pointer(
+          field_t3.type(),
+          symbol_typet("java::array[reference]"));
+
+      const symbol_typet &field_t3_subtype =
+        to_symbol_type(field_t3_pointer.subtype());
+      const struct_typet &subtype_struct = to_struct_type(
+        new_symbol_table.lookup_ref(field_t3_subtype.get_identifier()).type);
+      REQUIRE(is_valid_java_array(subtype_struct));
+
+      THEN("The elements have type Generic<Integer>")
+      {
+        const typet &element = field_t3_subtype.find_type(ID_C_element_type);
+        REQUIRE(is_java_generic_type(element));
+        const java_generic_typet generic_element =
+          to_java_generic_type(element);
+        require_type::require_pointer(
+          generic_element, symbol_typet("java::Generic"));
+
+        REQUIRE(is_java_generic_inst_parameter(
+          generic_element.generic_type_variables().front()));
+        java_generic_parametert parameter =
+          generic_element.generic_type_variables().front();
+        require_type::require_pointer(
+          parameter, symbol_typet("java::java.lang.Integer"));
+      }
+    }
   }
 }

From d9d9ea1ac033a2b66ae738b87d90e8c3daae6074 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Tue, 31 Oct 2017 15:49:54 +0000
Subject: [PATCH 13/22] Cleaning includes, unifying scenario names, adding JIRA
 references

---
 .../parse_bounded_generic_inner_classes.cpp   |   4 +-
 .../parse_derived_generic_class.cpp           |  11 +-
 .../parse_functions_with_generics.cpp         |  10 +-
 .../parse_generic_array_class.cpp             |  12 +-
 .../parse_generic_class.cpp                   |   6 +-
 ...neric_class_with_generic_inner_classes.cpp |   3 -
 .../parse_generic_functions.cpp               |   3 +-
 .../parse_generic_wildcard_function.cpp       |   8 +-
 .../parse_nested_generics.cpp                 | 121 ++++++++++++------
 .../parse_recursive_generic_class.cpp         |  10 +-
 .../parse_signature_descriptor_mismatch.cpp   |  11 +-
 11 files changed, 105 insertions(+), 94 deletions(-)

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
index 48441425d69..1a5c792faa1 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
@@ -11,16 +11,14 @@
 #include <testing-utils/require_symbol.h>
 #include <testing-utils/require_type.h>
 
-#include <istream>
 #include <memory>
 
 #include <util/config.h>
 #include <util/language.h>
-#include <util/message.h>
 #include <java_bytecode/java_bytecode_language.h>
 
 SCENARIO(
-  "java_bytecode_parse_bounded_generic_inner_classes",
+  "parse_bounded_generic_inner_classes",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table = load_java_class(
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
index 0884ef9cb88..d1ef530fb31 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
@@ -7,20 +7,17 @@
 \*******************************************************************/
 
 #include <testing-utils/catch.hpp>
+#include <testing-utils/load_java_class.h>
+#include <testing-utils/require_symbol.h>
 
-#include <istream>
 #include <memory>
 
 #include <util/config.h>
 #include <util/language.h>
-#include <util/message.h>
 #include <java_bytecode/java_bytecode_language.h>
-#include <iostream>
-#include <testing-utils/load_java_class.h>
-#include <testing-utils/require_symbol.h>
 
 SCENARIO(
-  "java_bytecode_parse_derived_generic_class",
+  "parse_derived_generic_class",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table = load_java_class(
@@ -36,6 +33,6 @@ SCENARIO(
       require_symbol::require_complete_class(derived_symbol);
 
     // TODO(tkiley): Currently we do not support extracting information
-    // about the base classes generic information.
+    // about the base classes generic information - issue TG-1287
   }
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp
index 15326342597..e956ce06280 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp
@@ -7,20 +7,16 @@
 \*******************************************************************/
 
 #include <testing-utils/catch.hpp>
+#include <testing-utils/load_java_class.h>
+#include <testing-utils/require_type.h>
 
 #include <util/config.h>
-#include <util/cmdline.h>
 #include <util/language.h>
-#include <util/prefix.h>
 
 #include <java_bytecode/java_bytecode_language.h>
 
-#include <iostream>
-#include <testing-utils/load_java_class.h>
-#include <testing-utils/require_type.h>
-
 SCENARIO(
-  "java_bytecode_parse_functions_with_generics",
+  "parse_functions_with_generics",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table = load_java_class(
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
index 236b4de152f..3f925a2ab9e 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
@@ -7,19 +7,17 @@
 \*******************************************************************/
 
 #include <testing-utils/catch.hpp>
+#include <testing-utils/load_java_class.h>
+#include <testing-utils/require_type.h>
+#include <testing-utils/require_symbol.h>
+
 
 #include <util/config.h>
-#include <util/cmdline.h>
 #include <util/language.h>
-#include <util/prefix.h>
-
 #include <java_bytecode/java_bytecode_language.h>
-#include <testing-utils/load_java_class.h>
-#include <testing-utils/require_type.h>
-#include <testing-utils/require_symbol.h>
 
 SCENARIO(
-  "java_bytecode_parse_generic_array_class",
+  "parse_generic_array_class",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table = load_java_class(
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
index 71382448c82..e022ba12ec3 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
@@ -11,16 +11,14 @@
 #include <testing-utils/require_symbol.h>
 #include <testing-utils/require_type.h>
 
-#include <istream>
 #include <memory>
 
 #include <util/config.h>
 #include <util/language.h>
-#include <util/message.h>
 #include <java_bytecode/java_bytecode_language.h>
 
 SCENARIO(
-  "java_bytecode_parse_generic_class_one_param",
+  "parse_generic_class_one_param",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table =
@@ -92,7 +90,7 @@ SCENARIO(
 }
 
 SCENARIO(
-  "java_bytecode_parse_generic_class_two_param",
+  "parse_generic_class_two_param",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table = load_java_class(
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp
index b7b1b1e54eb..6c66ff1f5a8 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp
@@ -10,11 +10,8 @@
 #include <testing-utils/require_symbol.h>
 #include <testing-utils/require_type.h>
 
-#include <util/cmdline.h>
 #include <util/config.h>
 #include <util/language.h>
-#include <util/prefix.h>
-#include <util/std_types.h>
 
 #include <java_bytecode/java_bytecode_language.h>
 
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
index 547bf4f7395..04c2dcb2eae 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
@@ -15,12 +15,11 @@
 
 #include <java_bytecode/java_bytecode_language.h>
 
-#include <iostream>
 #include <testing-utils/load_java_class.h>
 #include <testing-utils/require_type.h>
 
 SCENARIO(
-  "java_bytecode_parse_generic_functions",
+  "parse_generic_functions",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table = load_java_class(
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
index b1e925665d5..b4a43566db3 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
@@ -7,19 +7,15 @@
 \*******************************************************************/
 
 #include <testing-utils/catch.hpp>
+#include <testing-utils/load_java_class.h>
 
 #include <util/config.h>
-#include <util/cmdline.h>
 #include <util/language.h>
-#include <util/prefix.h>
 
 #include <java_bytecode/java_bytecode_language.h>
 
-#include <iostream>
-#include <testing-utils/load_java_class.h>
-
 SCENARIO(
-  "java_bytecode_parse_generic_wildcard",
+  "parse_generic_wildcard",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table=
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp
index 58aeb250667..820b5d6f412 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp
@@ -7,6 +7,7 @@
 \*******************************************************************/
 
 #include <testing-utils/catch.hpp>
+#include <testing-utils/load_java_class.h>
 #include <testing-utils/require_symbol.h>
 #include <testing-utils/require_type.h>
 
@@ -18,9 +19,6 @@
 
 #include <java_bytecode/java_bytecode_language.h>
 
-#include <iostream>
-#include <testing-utils/load_java_class.h>
-
 SCENARIO(
   "parse_nested_generics_fields",
   "[core][java_bytecode][java_bytecode_parse_generics]")
@@ -58,7 +56,8 @@ SCENARIO(
             generic_param ==
             java_generic_inst_parametert(symbol_typet("java::Generic")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -83,7 +82,8 @@ SCENARIO(
             generic_param ==
             java_generic_inst_parametert(symbol_typet("java::Generic")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -108,7 +108,8 @@ SCENARIO(
             generic_param ==
             java_generic_inst_parametert(symbol_typet("java::Generic")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -133,7 +134,8 @@ SCENARIO(
             generic_param ==
             java_generic_inst_parametert(symbol_typet("java::Generic")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -158,7 +160,8 @@ SCENARIO(
             generic_param == java_generic_inst_parametert(
                                symbol_typet("java::GenericTwoParam")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -183,7 +186,8 @@ SCENARIO(
             generic_param == java_generic_inst_parametert(
                                symbol_typet("java::GenericTwoParam")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -208,7 +212,8 @@ SCENARIO(
             generic_param == java_generic_inst_parametert(
                                symbol_typet("java::GenericTwoParam")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -240,7 +245,8 @@ SCENARIO(
             generic_param ==
             java_generic_inst_parametert(symbol_typet("java::Generic")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -272,7 +278,8 @@ SCENARIO(
             generic_param ==
             java_generic_inst_parametert(symbol_typet("java::Generic")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -304,7 +311,8 @@ SCENARIO(
             generic_param ==
             java_generic_inst_parametert(symbol_typet("java::Generic")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -336,7 +344,8 @@ SCENARIO(
             generic_param == java_generic_inst_parametert(
                                symbol_typet("java::Interface_Implementation")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -368,7 +377,8 @@ SCENARIO(
             generic_param == java_generic_inst_parametert(
                                symbol_typet("java::Interface_Implementation")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
 
@@ -400,7 +410,8 @@ SCENARIO(
             generic_param ==
             java_generic_inst_parametert(symbol_typet("java::Generic")));
         }
-        // TODO: extend tests when nested generics are parsed correctly
+        // TODO: extend tests when nested generics are parsed correctly -
+        // issue TG-1301
       }
     }
   }
@@ -444,7 +455,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -477,7 +489,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -510,7 +523,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -543,7 +557,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -576,7 +591,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -609,7 +625,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -642,7 +659,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -683,7 +701,8 @@ SCENARIO(
           generic_param ==
           java_generic_inst_parametert(symbol_typet("java::Generic")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -724,7 +743,8 @@ SCENARIO(
           generic_param ==
           java_generic_inst_parametert(symbol_typet("java::Generic")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -765,7 +785,8 @@ SCENARIO(
           generic_param ==
           java_generic_inst_parametert(symbol_typet("java::Generic")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -806,7 +827,8 @@ SCENARIO(
           generic_param == java_generic_inst_parametert(
                              symbol_typet("java::Interface_Implementation")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -847,7 +869,8 @@ SCENARIO(
           generic_param == java_generic_inst_parametert(
                              symbol_typet("java::Interface_Implementation")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -888,7 +911,8 @@ SCENARIO(
           generic_param ==
           java_generic_inst_parametert(symbol_typet("java::Generic")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -920,7 +944,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -952,7 +977,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -984,7 +1010,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -1016,7 +1043,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -1048,7 +1076,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -1080,7 +1109,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -1112,7 +1142,8 @@ SCENARIO(
       REQUIRE(
         generic_param ==
         java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -1152,7 +1183,8 @@ SCENARIO(
           generic_param ==
           java_generic_inst_parametert(symbol_typet("java::Generic")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -1192,7 +1224,8 @@ SCENARIO(
           generic_param ==
           java_generic_inst_parametert(symbol_typet("java::Generic")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -1232,7 +1265,8 @@ SCENARIO(
           generic_param ==
           java_generic_inst_parametert(symbol_typet("java::Generic")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -1272,7 +1306,8 @@ SCENARIO(
           generic_param == java_generic_inst_parametert(
                              symbol_typet("java::Interface_Implementation")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -1312,7 +1347,8 @@ SCENARIO(
           generic_param == java_generic_inst_parametert(
                              symbol_typet("java::Interface_Implementation")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 
@@ -1352,7 +1388,8 @@ SCENARIO(
           generic_param ==
           java_generic_inst_parametert(symbol_typet("java::Generic")));
       }
-      // TODO: extend tests when nested generics are parsed correctly
+      // TODO: extend tests when nested generics are parsed correctly - issue
+      // TG-1301
     }
   }
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_recursive_generic_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_recursive_generic_class.cpp
index f20de637e5c..30c87045412 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_recursive_generic_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_recursive_generic_class.cpp
@@ -7,20 +7,16 @@
 \*******************************************************************/
 
 #include <testing-utils/catch.hpp>
+#include <testing-utils/load_java_class.h>
 
 #include <util/config.h>
-#include <util/cmdline.h>
 #include <util/language.h>
-#include <util/prefix.h>
 
 #include <java_bytecode/java_bytecode_language.h>
-#include <testing-utils/load_java_class.h>
-
-#include <iostream>
 #include <util/namespace.h>
 
 SCENARIO(
-  "java_bytecode_parse_recursive_generic_class",
+  "parse_recursive_generic_class",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table=
@@ -32,5 +28,5 @@ SCENARIO(
   REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
   // TODO: Extend this unit test when recursive generic types are correctly
-  // parsed.
+  // parsed - issue TG-1305
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
index 1ca93cbe9fa..82186f2ddaf 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
@@ -7,18 +7,17 @@
 \*******************************************************************/
 
 #include <testing-utils/catch.hpp>
+#include <testing-utils/load_java_class.h>
+#include <testing-utils/require_symbol.h>
 
 #include <memory>
 
 #include <util/config.h>
 #include <util/language.h>
 #include <java_bytecode/java_bytecode_language.h>
-#include <iostream>
-#include <testing-utils/load_java_class.h>
-#include <testing-utils/require_symbol.h>
 
 SCENARIO(
-  "java_bytecode_parse_signature_descriptor_mismatch",
+  "parse_signature_descriptor_mismatch",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table = load_java_class(
@@ -54,7 +53,7 @@ SCENARIO(
     REQUIRE(func_code.parameters().size()==3);
 
     // TODO: for now, the parameters are not generic because we fall back to
-    // descriptor due to mismatch; enable tests when fixed
+    // descriptor due to mismatch; enable tests when fixed - issue TG-1309
     // code_typet::parametert param_parent=
     //  require_type::require_parameter(func_code,"arg1a");
     // REQUIRE(is_java_generic_type(param_parent.type()));
@@ -89,7 +88,7 @@ SCENARIO(
     REQUIRE(func_code.parameters().size()==3);
 
     // TODO: for now, the parameters are not generic because we fall back to
-    // descriptor due to mismatch; enable tests when fixed
+    // descriptor due to mismatch; enable tests when fixed - issue TG-1309
     // code_typet::parametert param_parent=
     //  require_type::require_parameter(func_code,"arg1a");
     // REQUIRE(is_java_generic_type(param_parent.type()));

From e908f0c757b97a1251bcf6f992575dd43cc45f70 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Thu, 2 Nov 2017 10:34:10 +0000
Subject: [PATCH 14/22] Updating utility functions to check generic/non-generic
 java classes

---
 unit/testing-utils/require_type.cpp | 61 ++++++++++++++++++++++++++---
 unit/testing-utils/require_type.h   |  8 ++--
 2 files changed, 61 insertions(+), 8 deletions(-)

diff --git a/unit/testing-utils/require_type.cpp b/unit/testing-utils/require_type.cpp
index de896e90e63..13a97d3e229 100644
--- a/unit/testing-utils/require_type.cpp
+++ b/unit/testing-utils/require_type.cpp
@@ -202,14 +202,65 @@ const typet &require_type::require_java_non_generic_type(
   return type;
 }
 
-/// Verify that a class is a valid java generic class
+/// Checks that the given type is a complete class.
+/// \param class_type type of the class
+/// \return class_type of the class
+class_typet require_complete_class(const typet &class_type)
+{
+  REQUIRE(class_type.id() == ID_struct);
+
+  const class_typet &class_class_type = to_class_type(class_type);
+  REQUIRE(class_class_type.is_class());
+  REQUIRE_FALSE(class_class_type.get_bool(ID_incomplete_class));
+
+  return class_class_type;
+}
+
+/// Verify that a class is a complete, valid java generic class with the
+/// specified list of variables.
 /// \param class_type: the class
+/// \param type_variables: vector of type variables
 /// \return: A reference to the java generic class type.
-java_generics_class_typet &
-require_type::require_java_generic_class(const class_typet &class_type)
+java_generics_class_typet require_type::require_java_generic_class(
+  const typet &class_type,
+  const optionalt<std::initializer_list<irep_idt>> &type_variables)
 {
-  java_class_typet java_class_type = to_java_class_type(class_type);
+  const class_typet &class_class_type = require_complete_class(class_type);
+  java_class_typet java_class_type = to_java_class_type(class_class_type);
 
   REQUIRE(is_java_generics_class_type(java_class_type));
-  return to_java_generics_class_type(java_class_type);
+  java_generics_class_typet java_generic_class_type =
+    to_java_generics_class_type(java_class_type);
+
+  if(type_variables)
+  {
+    const java_generics_class_typet::generic_typest &generic_type_vars =
+      java_generic_class_type.generic_types();
+    REQUIRE(generic_type_vars.size() == type_variables.value().size());
+    REQUIRE(
+      std::equal(
+        type_variables->begin(),
+        type_variables->end(),
+        generic_type_vars.begin(),
+        [](
+          const irep_idt &type_var_name, const java_generic_parametert &param) {
+          REQUIRE(!is_java_generic_inst_parameter((param)));
+          return param.type_variable().get_identifier() == type_var_name;
+        }));
+  }
+  return java_generic_class_type;
+}
+
+/// Verify that a class is a complete, valid nongeneric java class
+/// \param class_type: the class
+/// \return: A reference to the java generic class type.
+java_class_typet
+require_type::require_java_non_generic_class(const typet &class_type)
+{
+  const class_typet &class_class_type = require_complete_class(class_type);
+  java_class_typet java_class_type = to_java_class_type(class_class_type);
+
+  REQUIRE(!is_java_generics_class_type(java_class_type));
+
+  return java_class_type;
 }
diff --git a/unit/testing-utils/require_type.h b/unit/testing-utils/require_type.h
index 25466433513..59ff0c5bbf6 100644
--- a/unit/testing-utils/require_type.h
+++ b/unit/testing-utils/require_type.h
@@ -19,7 +19,6 @@
 #include <util/std_types.h>
 #include <java_bytecode/java_types.h>
 
-
 // NOLINTNEXTLINE(readability/namespace)
 namespace require_type
 {
@@ -63,8 +62,11 @@ const typet &require_java_non_generic_type(
   const typet &type,
   const optionalt<symbol_typet> &expect_subtype);
 
-java_generics_class_typet &
-require_java_generic_class(const class_typet &class_type);
+java_generics_class_typet require_java_generic_class(
+  const typet &class_type,
+  const optionalt<std::initializer_list<irep_idt>> &type_variables);
+
+java_class_typet require_java_non_generic_class(const typet &class_type);
 }
 
 #endif // CPROVER_TESTING_UTILS_REQUIRE_TYPE_H

From c1e1ba2afab23ed0a8a6d24aa2873e32bbfc01eb Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Wed, 1 Nov 2017 11:59:21 +0000
Subject: [PATCH 15/22] Applying new function for accessing elements of arrays

---
 .../parse_generic_array_class.cpp                           | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
index 3f925a2ab9e..92cf70d54af 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
@@ -50,7 +50,7 @@ SCENARIO(
 
       THEN("The elements have the parametric type T")
       {
-        const typet &element = field_t_subtype.find_type(ID_C_element_type);
+        const typet &element = java_array_element_type(field_t_subtype);
         REQUIRE(is_java_generic_parameter(element));
         java_generic_parametert element_parameter =
           to_java_generic_parameter(element);
@@ -80,7 +80,7 @@ SCENARIO(
 
       THEN("The elements have type Generic<T>")
       {
-        const typet &element = field_t2_subtype.find_type(ID_C_element_type);
+        const typet &element = java_array_element_type(field_t2_subtype);
         REQUIRE(is_java_generic_type(element));
         const java_generic_typet generic_element =
           to_java_generic_type(element);
@@ -118,7 +118,7 @@ SCENARIO(
 
       THEN("The elements have type Generic<Integer>")
       {
-        const typet &element = field_t3_subtype.find_type(ID_C_element_type);
+        const typet &element = java_array_element_type(field_t3_subtype);
         REQUIRE(is_java_generic_type(element));
         const java_generic_typet generic_element =
           to_java_generic_type(element);

From cce781465f9ade0e871d5de40841552f0dc2dba4 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Thu, 2 Nov 2017 13:15:09 +0000
Subject: [PATCH 16/22] Refactoring unit test utility functions to make them
 easier to use

---
 unit/testing-utils/require_type.cpp | 161 ++++++++++++++++------------
 unit/testing-utils/require_type.h   |  21 ++--
 2 files changed, 107 insertions(+), 75 deletions(-)

diff --git a/unit/testing-utils/require_type.cpp b/unit/testing-utils/require_type.cpp
index 13a97d3e229..78b51b53762 100644
--- a/unit/testing-utils/require_type.cpp
+++ b/unit/testing-utils/require_type.cpp
@@ -65,12 +65,11 @@ code_typet require_type::require_code(const typet &type)
 /// \param num_params check the the given code_typet expects this
 /// number of parameters
 /// \return The type cast to a code_typet
-code_typet require_type::require_code(
-  const typet &type,
-  const size_t num_params)
+code_typet
+require_type::require_code(const typet &type, const size_t num_params)
 {
-  code_typet code_type=require_code(type);
-  REQUIRE(code_type.parameters().size()==num_params);
+  code_typet code_type = require_code(type);
+  REQUIRE(code_type.parameters().size() == num_params);
   return code_type;
 }
 
@@ -105,82 +104,98 @@ bool require_java_generic_parametert_expectation(
 {
   switch(expected.kind)
   {
-    case require_type::type_parameter_kindt::Var:
-      REQUIRE(!is_java_generic_inst_parameter((param)));
-      REQUIRE(param.type_variable().get_identifier()==expected.description);
-      return true;
-    case require_type::type_parameter_kindt::Inst:
-      REQUIRE(is_java_generic_inst_parameter((param)));
-      REQUIRE(param.subtype()==symbol_typet(expected.description));
-      return true;
+  case require_type::type_parameter_kindt::Var:
+    REQUIRE(!is_java_generic_inst_parameter((param)));
+    REQUIRE(param.type_variable().get_identifier() == expected.description);
+    return true;
+  case require_type::type_parameter_kindt::Inst:
+    REQUIRE(is_java_generic_inst_parameter((param)));
+    REQUIRE(param.subtype() == symbol_typet(expected.description));
+    return true;
   }
   // Should be unreachable...
   REQUIRE(false);
   return false;
 }
 
+/// Verify a given type is a java_generic_type
+/// \param type The type to check
+/// \return The type, cast to a java_generic_typet
+java_generic_typet require_type::require_java_generic_type(const typet &type)
+{
+  REQUIRE(is_java_generic_type(type));
+  return to_java_generic_type(type);
+}
 
-/// Verify a given type is a java_generic_type, optionally checking
+/// Verify a given type is a java_generic_type, checking
 /// that it's associated type variables match a given set of identifiers.
 /// Expected usage is something like this:
 ///
 /// require_java_generic_type(type,
-///                          {{Inst,"java::java.lang.Integer"},{Var,"T"}})
+///   {{require_type::type_parameter_kindt::Inst, "java::java.lang.Integer"},
+///    {require_type::type_parameter_kindt::Var, "T"}})
 ///
 /// \param type The type to check
-/// \param type_expectations An optional set of type variable kinds
+/// \param type_expectations A set of type variable kinds
 /// and identifiers which should be expected as the type parameters of the
 /// given generic type.
 /// \return The given type, cast to a java_generic_typet
 java_generic_typet require_type::require_java_generic_type(
   const typet &type,
-  const optionalt<require_type::expected_type_parameterst> &type_expectations)
+  const require_type::expected_type_parameterst &type_expectations)
 {
-  REQUIRE(is_java_generic_type(type));
-  const java_generic_typet &generic_type=to_java_generic_type(type);
-  if(type_expectations)
-  {
-    const java_generic_typet::generic_type_variablest &generic_type_vars=
-      generic_type.generic_type_variables();
-    REQUIRE(generic_type_vars.size()==type_expectations->size());
-    REQUIRE(
-      std::equal(
-        generic_type_vars.begin(),
-        generic_type_vars.end(),
-        type_expectations->begin(),
-        require_java_generic_parametert_expectation));
-  }
+  const java_generic_typet &generic_type =
+    require_type::require_java_generic_type(type);
+
+  const java_generic_typet::generic_type_variablest &generic_type_vars =
+    generic_type.generic_type_variables();
+  REQUIRE(generic_type_vars.size() == type_expectations.size());
+  REQUIRE(
+    std::equal(
+      generic_type_vars.begin(),
+      generic_type_vars.end(),
+      type_expectations.begin(),
+      require_java_generic_parametert_expectation));
 
   return generic_type;
 }
 
-/// Verify a given type is a java_generic_parameter, optionally checking
+/// Verify a given type is a java_generic_parameter
+/// \param type The type to check
+/// \return The type, cast to a java_generic_parametert
+java_generic_parametert
+require_type::require_java_generic_parameter(const typet &type)
+{
+  REQUIRE(is_java_generic_parameter(type));
+  return to_java_generic_parameter(type);
+}
+
+/// Verify a given type is a java_generic_parameter, checking
 /// that it's associated type variables match a given set of expectations.
 /// Expected usage is something like this:
 ///
-/// require_java_generic_parameter(parameter, {Inst,"java::java.lang.Integer"})
+/// require_java_generic_parameter(parameter,
+///     {require_type::type_parameter_kindt::Inst,"java::java.lang.Integer"})
 ///
 /// or
 ///
-/// require_java_generic_parameter(parameter, {Var,"T"})
+/// require_java_generic_parameter(parameter,
+///     {require_type::type_parameter_kindt::Var,"T"})
 ///
 /// \param type The type to check
-/// \param type_expectation An optional description of the identifiers/kinds
+/// \param type_expectation A description of the identifiers/kinds
 /// which / should be expected as the type parameter of the generic parameter.
 /// \return The given type, cast to a java_generic_parametert
 java_generic_parametert require_type::require_java_generic_parameter(
   const typet &type,
-  const optionalt<require_type::expected_type_parametert> &type_expectation)
+  const require_type::expected_type_parametert &type_expectation)
 {
-  REQUIRE(is_java_generic_parameter(type));
-  const java_generic_parametert &generic_param=to_java_generic_parameter(type);
-  if(type_expectation)
-  {
-    REQUIRE(
-      require_java_generic_parametert_expectation(
-        generic_param,
-        type_expectation.value()));
-  }
+  const java_generic_parametert &generic_param =
+    require_type::require_java_generic_parameter(type);
+
+  REQUIRE(
+    require_java_generic_parametert_expectation(
+      generic_param, type_expectation));
 
   return generic_param;
 }
@@ -198,7 +213,7 @@ const typet &require_type::require_java_non_generic_type(
   REQUIRE(!is_java_generic_type(type));
   REQUIRE(!is_java_generic_inst_parameter(type));
   if(expect_subtype)
-    REQUIRE(type.subtype()==expect_subtype.value());
+    REQUIRE(type.subtype() == expect_subtype.value());
   return type;
 }
 
@@ -216,14 +231,11 @@ class_typet require_complete_class(const typet &class_type)
   return class_class_type;
 }
 
-/// Verify that a class is a complete, valid java generic class with the
-/// specified list of variables.
+/// Verify that a class is a complete, valid java generic class.
 /// \param class_type: the class
-/// \param type_variables: vector of type variables
 /// \return: A reference to the java generic class type.
-java_generics_class_typet require_type::require_java_generic_class(
-  const typet &class_type,
-  const optionalt<std::initializer_list<irep_idt>> &type_variables)
+java_generics_class_typet
+require_type::require_java_generic_class(const typet &class_type)
 {
   const class_typet &class_class_type = require_complete_class(class_type);
   java_class_typet java_class_type = to_java_class_type(class_class_type);
@@ -232,22 +244,35 @@ java_generics_class_typet require_type::require_java_generic_class(
   java_generics_class_typet java_generic_class_type =
     to_java_generics_class_type(java_class_type);
 
-  if(type_variables)
-  {
-    const java_generics_class_typet::generic_typest &generic_type_vars =
-      java_generic_class_type.generic_types();
-    REQUIRE(generic_type_vars.size() == type_variables.value().size());
-    REQUIRE(
-      std::equal(
-        type_variables->begin(),
-        type_variables->end(),
-        generic_type_vars.begin(),
-        [](
-          const irep_idt &type_var_name, const java_generic_parametert &param) {
-          REQUIRE(!is_java_generic_inst_parameter((param)));
-          return param.type_variable().get_identifier() == type_var_name;
-        }));
-  }
+  return java_generic_class_type;
+}
+
+/// Verify that a class is a complete, valid java generic class with the
+/// specified list of variables.
+/// \param class_type: the class
+/// \param type_variables: vector of type variables
+/// \return: A reference to the java generic class type.
+java_generics_class_typet require_type::require_java_generic_class(
+  const typet &class_type,
+  const std::initializer_list<irep_idt> &type_variables)
+{
+  const java_generics_class_typet java_generic_class_type =
+    require_type::require_java_generic_class(class_type);
+
+  const java_generics_class_typet::generic_typest &generic_type_vars =
+    java_generic_class_type.generic_types();
+  REQUIRE(generic_type_vars.size() == type_variables.size());
+  REQUIRE(
+    std::equal(
+      type_variables.begin(),
+      type_variables.end(),
+      generic_type_vars.begin(),
+      [](const irep_idt &type_var_name, const java_generic_parametert &param)
+      {
+        REQUIRE(!is_java_generic_inst_parameter((param)));
+        return param.type_variable().get_identifier() == type_var_name;
+      }));
+
   return java_generic_class_type;
 }
 
diff --git a/unit/testing-utils/require_type.h b/unit/testing-utils/require_type.h
index 59ff0c5bbf6..6d61f7d325b 100644
--- a/unit/testing-utils/require_type.h
+++ b/unit/testing-utils/require_type.h
@@ -34,13 +34,15 @@ code_typet require_code(const typet &type);
 code_typet::parametert
 require_parameter(const code_typet &function_type, const irep_idt &param_name);
 
-code_typet require_code(
-  const typet &type,
-  const size_t num_params);
+code_typet require_code(const typet &type, const size_t num_params);
 
 // A mini DSL for describing an expected set of type parameters for a
 // java_generic_typet
-enum class type_parameter_kindt { Inst, Var };
+enum class type_parameter_kindt
+{
+  Inst,
+  Var
+};
 struct expected_type_parametert
 {
   type_parameter_kindt kind;
@@ -49,22 +51,27 @@ struct expected_type_parametert
 typedef std::initializer_list<expected_type_parametert>
   expected_type_parameterst;
 
+java_generic_typet require_java_generic_type(const typet &type);
+
 java_generic_typet require_java_generic_type(
   const typet &type,
-  const optionalt<require_type::expected_type_parameterst> &type_expectations);
+  const require_type::expected_type_parameterst &type_expectations);
 
+java_generic_parametert require_java_generic_parameter(const typet &type);
 
 java_generic_parametert require_java_generic_parameter(
   const typet &type,
-  const optionalt<require_type::expected_type_parametert> &type_expectation);
+  const require_type::expected_type_parametert &type_expectation);
 
 const typet &require_java_non_generic_type(
   const typet &type,
   const optionalt<symbol_typet> &expect_subtype);
 
+java_generics_class_typet require_java_generic_class(const typet &class_type);
+
 java_generics_class_typet require_java_generic_class(
   const typet &class_type,
-  const optionalt<std::initializer_list<irep_idt>> &type_variables);
+  const std::initializer_list<irep_idt> &type_variables);
 
 java_class_typet require_java_non_generic_class(const typet &class_type);
 }

From 398c88a1c7a764293ed7f41c099c853e26affd2e Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Thu, 2 Nov 2017 10:12:05 +0000
Subject: [PATCH 17/22] Applying new utility functions for generics

---
 .../parse_bounded_generic_inner_classes.cpp   |  219 ++--
 .../parse_derived_generic_class.cpp           |    5 +-
 .../parse_functions_with_generics.cpp         |  162 +--
 .../parse_generic_array_class.cpp             |   83 +-
 .../parse_generic_class.cpp                   |   99 +-
 ...neric_class_with_generic_inner_classes.cpp | 1129 +++++-----------
 .../parse_generic_functions.cpp               |  591 +++------
 .../parse_generic_wildcard_function.cpp       |   28 +-
 .../parse_nested_generics.cpp                 | 1161 +++++++----------
 .../parse_recursive_generic_class.cpp         |   14 +-
 .../parse_signature_descriptor_mismatch.cpp   |   46 +-
 11 files changed, 1195 insertions(+), 2342 deletions(-)

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
index 1a5c792faa1..a4f724d07e1 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
@@ -8,11 +8,8 @@
 
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
-#include <testing-utils/require_symbol.h>
 #include <testing-utils/require_type.h>
 
-#include <memory>
-
 #include <util/config.h>
 #include <util/language.h>
 #include <java_bytecode/java_bytecode_language.h>
@@ -28,6 +25,10 @@ SCENARIO(
   std::string class_prefix = "java::BoundedGenericInnerClasses";
   REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
+  const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
+  const java_class_typet &java_class_type =
+    require_type::require_java_non_generic_class(class_symbol.type);
+
   WHEN("Parsing an inner class with type variable")
   {
     std::string inner_name = class_prefix + "$Inner";
@@ -35,29 +36,18 @@ SCENARIO(
     THEN("The symbol type should be generic")
     {
       const symbolt &class_symbol = new_symbol_table.lookup_ref(inner_name);
-      class_typet class_type =
-        require_symbol::require_complete_class(class_symbol);
-      java_generics_class_typet java_generics_class_type =
-        require_type::require_java_generic_class(class_type);
-
-      const typet &elem_type =
-        to_java_class_type(class_type).component_type("elem");
-      REQUIRE(is_java_generic_parameter(elem_type));
+      const java_generics_class_typet &java_generics_class_type =
+        require_type::require_java_generic_class(
+          class_symbol.type, {inner_name + "::E"});
 
-      REQUIRE(java_generics_class_type.generic_types().size() == 1);
-      THEN("Type variable is named 'E'")
+      THEN("The fields are of correct types")
       {
-        typet &type_var = java_generics_class_type.generic_types().front();
-        REQUIRE(is_java_generic_parameter(type_var));
-        java_generic_parametert generic_type_var =
-          to_java_generic_parameter(type_var);
-        REQUIRE(
-          generic_type_var.type_variable().get_identifier() ==
-          inner_name + "::E");
-        typet &sub_type = generic_type_var.subtype();
-        REQUIRE(sub_type.id() == ID_symbol);
-        symbol_typet &bound_type = to_symbol_type(sub_type);
-        REQUIRE(bound_type.get_identifier() == "java::java.lang.Object");
+        const struct_union_typet::componentt &elem =
+          require_type::require_component(
+            to_struct_type(class_symbol.type), "elem");
+        require_type::require_java_generic_parameter(
+          elem.type(),
+          {require_type::type_parameter_kindt::Var, inner_name + "::E"});
       }
     }
   }
@@ -70,109 +60,63 @@ SCENARIO(
     {
       const symbolt &class_symbol =
         new_symbol_table.lookup_ref(boundedinner_name);
-      class_typet class_type =
-        require_symbol::require_complete_class(class_symbol);
-      java_generics_class_typet java_generics_class_type =
-        require_type::require_java_generic_class(class_type);
-
-      REQUIRE(java_generics_class_type.generic_types().size() == 1);
-      typet &type_var = java_generics_class_type.generic_types().front();
-      REQUIRE(is_java_generic_parameter(type_var));
-      java_generic_parametert generic_type_var =
-        to_java_generic_parameter(type_var);
-
-      REQUIRE(
-        generic_type_var.type_variable().get_identifier() ==
-        boundedinner_name + "::NUM");
-      REQUIRE(
-        java_generics_class_type_var(0, java_generics_class_type) ==
-        boundedinner_name + "::NUM");
-      THEN("Bound must be Number")
+      const java_generics_class_typet &java_generics_class_type =
+        require_type::require_java_generic_class(
+          class_symbol.type, {boundedinner_name + "::NUM"});
+
+      //TODO extend when bounds are parsed correctly - TG-1286
+
+      THEN("The fields are of correct types")
       {
-        typet &sub_type = generic_type_var.subtype();
-        REQUIRE(sub_type.id() == ID_symbol);
-        symbol_typet &bound_type = to_symbol_type(sub_type);
-        REQUIRE(bound_type.get_identifier() == "java::java.lang.Number");
-        REQUIRE(
-          to_symbol_type(
-            java_generics_class_type_bound(0, java_generics_class_type))
-            .get_identifier() == "java::java.lang.Number");
+        const struct_union_typet::componentt &elem =
+          require_type::require_component(
+            to_struct_type(class_symbol.type), "elem");
+        require_type::require_java_generic_parameter(
+          elem.type(),
+          {require_type::type_parameter_kindt::Var,
+           boundedinner_name + "::NUM"});
       }
-
-      const typet &elem_type =
-        to_java_class_type(class_type).component_type("elem");
-      REQUIRE(is_java_generic_parameter(elem_type));
     }
   }
 
   WHEN("There is a generic field with a concrete type")
   {
-    const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
-    class_typet class_type =
-      require_symbol::require_complete_class(class_symbol);
-
-    java_class_typet java_class_type = to_java_class_type(class_type);
-    REQUIRE(!is_java_generics_class_type(java_class_type));
-
-    const typet &belem_type = java_class_type.component_type("belem");
-
-    REQUIRE(belem_type != nil_typet());
-    REQUIRE(is_java_generic_type(belem_type));
-    THEN("Field has instantiated type variable")
-    {
-      const java_generic_typet &container = to_java_generic_type(belem_type);
-
-      const std::vector<java_generic_parametert> &generic_types =
-        container.generic_type_variables();
-      REQUIRE(generic_types.size() == 1);
-
-      const typet &inst_type = java_generic_get_inst_type(0, container);
-
-      REQUIRE(inst_type.id() == ID_pointer);
-      const typet &inst_type_symbol = inst_type.subtype();
-      REQUIRE(inst_type_symbol.id() == ID_symbol);
-      REQUIRE(
-        to_symbol_type(inst_type_symbol).get_identifier() ==
-        "java::java.lang.Integer");
-    }
+    const struct_union_typet::componentt &belem_type =
+      require_type::require_component(
+        to_struct_type(class_symbol.type), "belem");
+    require_type::require_pointer(
+      belem_type.type(), symbol_typet(class_prefix + "$BoundedInner"));
+    require_type::require_java_generic_type(
+      belem_type.type(),
+      {{require_type::type_parameter_kindt::Inst, "java::java.lang.Integer"}});
   }
 
   WHEN("Parsing an inner class with double bounded type variable")
   {
     std::string doubleboundedinner_name = class_prefix + "$DoubleBoundedInner";
     REQUIRE(new_symbol_table.has_symbol(doubleboundedinner_name));
-    THEN("The bounds should be encoded")
+    THEN("The symbol type should be generic")
     {
       const symbolt &class_symbol =
         new_symbol_table.lookup_ref(doubleboundedinner_name);
-      class_typet class_type =
-        require_symbol::require_complete_class(class_symbol);
-
-      java_class_typet java_class_type = to_java_class_type(class_type);
-      REQUIRE_FALSE(is_java_generics_class_type(java_class_type));
-
-// TODO (tkiley): Extend this unit test when bounds are correctly
-// parsed - issue TG-1286
-#if 0
-      java_generics_class_typet java_generics_class_type=
-        to_java_generics_class_type(java_class_type);
-      REQUIRE(java_generics_class_type.generic_types().size()==1);
-      typet &type_var=java_generics_class_type.generic_types().front();
-      REQUIRE(is_java_generic_parameter(type_var));
-      java_generic_parametert generic_type_var=
-        to_java_generic_parameter(type_var);
-
-      REQUIRE(
-        generic_type_var.type_variable().get_identifier()==
-        doubleboundedinner_name+"::T");
-      REQUIRE(
-        java_generics_class_type_var(0, java_generics_class_type)==
-        doubleboundedinner_name+"::T");
-      THEN("Bound must be Number and Interface")
-      {
+      const java_generics_class_typet &java_generics_class_type =
+        require_type::require_java_generic_class(
+          class_symbol.type, {doubleboundedinner_name + "::T"});
 
+      //TODO extend when bounds are parsed correctly - TG-1286
+
+      THEN("The fields are of correct types")
+      {
+        const struct_union_typet::componentt &elem =
+          require_type::require_component(
+            to_struct_type(class_symbol.type), "elem");
+        require_type::require_java_generic_parameter(
+          elem.type(),
+          {require_type::type_parameter_kindt::Var,
+           doubleboundedinner_name + "::T"});
+
+        // TODO extend when bounds are parsed correctly - TG-1286
       }
-#endif
     }
   }
 
@@ -180,47 +124,34 @@ SCENARIO(
   {
     std::string twoelementinner_name = class_prefix + "$TwoElementInner";
     REQUIRE(new_symbol_table.has_symbol(twoelementinner_name));
-    THEN("Both generic parameters should be encoded")
+    THEN("The symbol type should be generic with two type variables")
     {
       const symbolt &class_symbol =
         new_symbol_table.lookup_ref(twoelementinner_name);
-      class_typet class_type =
-        require_symbol::require_complete_class(class_symbol);
-      java_generics_class_typet java_generics_class_type =
-        require_type::require_java_generic_class(class_type);
-
-      REQUIRE(java_generics_class_type.generic_types().size() == 2);
+      const java_generics_class_typet &java_generics_class_type =
+        require_type::require_java_generic_class(
+          class_symbol.type,
+          {twoelementinner_name + "::K", twoelementinner_name + "::V"});
 
-      // The first parameter should be called K
-      {
-        const typet first_param =
-          java_generics_class_type.generic_types().at(0);
-        REQUIRE(is_java_generic_parameter(first_param));
-        java_generic_parametert generic_type_var =
-          to_java_generic_parameter(first_param);
-
-        REQUIRE(
-          generic_type_var.type_variable().get_identifier() ==
-          twoelementinner_name + "::K");
-        REQUIRE(
-          java_generics_class_type_var(0, java_generics_class_type) ==
-          twoelementinner_name + "::K");
-      }
+      //TODO extend when bounds are parsed correctly - TG-1286
 
-      // The second parameter should be called V
+      THEN("The fields are of correct types")
       {
-        const typet &second_param =
-          java_generics_class_type.generic_types().at(1);
-        REQUIRE(is_java_generic_parameter(second_param));
-        java_generic_parametert generic_type_var =
-          to_java_generic_parameter(second_param);
-
-        REQUIRE(
-          generic_type_var.type_variable().get_identifier() ==
-          twoelementinner_name + "::V");
-        REQUIRE(
-          java_generics_class_type_var(1, java_generics_class_type) ==
-          twoelementinner_name + "::V");
+        const struct_union_typet::componentt &elemk =
+          require_type::require_component(
+            to_struct_type(class_symbol.type), "k");
+        require_type::require_java_generic_parameter(
+          elemk.type(),
+          {require_type::type_parameter_kindt::Var,
+           twoelementinner_name + "::K"});
+
+        const struct_union_typet::componentt &elemv =
+          require_type::require_component(
+            to_struct_type(class_symbol.type), "v");
+        require_type::require_java_generic_parameter(
+          elemv.type(),
+          {require_type::type_parameter_kindt::Var,
+           twoelementinner_name + "::V"});
       }
     }
   }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
index d1ef530fb31..106f1e230f1 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
@@ -8,13 +8,11 @@
 
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
-#include <testing-utils/require_symbol.h>
-
-#include <memory>
 
 #include <util/config.h>
 #include <util/language.h>
 #include <java_bytecode/java_bytecode_language.h>
+#include <iostream>
 
 SCENARIO(
   "parse_derived_generic_class",
@@ -29,6 +27,7 @@ SCENARIO(
     REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
     const symbolt &derived_symbol = new_symbol_table.lookup_ref(class_prefix);
+    derived_symbol.show(std::cout);
     const class_typet &derived_class_type =
       require_symbol::require_complete_class(derived_symbol);
 
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp
index e956ce06280..f1aef3ff5d8 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_functions_with_generics.cpp
@@ -10,11 +10,6 @@
 #include <testing-utils/load_java_class.h>
 #include <testing-utils/require_type.h>
 
-#include <util/config.h>
-#include <util/language.h>
-
-#include <java_bytecode/java_bytecode_language.h>
-
 SCENARIO(
   "parse_functions_with_generics",
   "[core][java_bytecode][java_bytecode_parse_generics]")
@@ -37,25 +32,22 @@ SCENARIO(
 
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
-      const code_typet func_code = to_code_type(func_symbol.type);
+      const code_typet &func_code =
+        require_type::require_code(func_symbol.type);
 
       THEN("It has parameter x pointing to Generic")
       {
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with parameter pointing to java.lang.Integer")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_param_x, symbol_typet("java::java.lang.Integer"));
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Integer"}});
         }
       }
 
@@ -67,14 +59,10 @@ SCENARIO(
 
         THEN("It is generic with parameter pointing to java.lang.Integer")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_return_param, symbol_typet("java::java.lang.Integer"));
+          require_type::require_java_generic_type(
+            return_type,
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Integer"}});
         }
       }
     }
@@ -93,25 +81,21 @@ SCENARIO(
 
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
-      const code_typet func_code = to_code_type(func_symbol.type);
+      const code_typet func_code = require_type::require_code(func_symbol.type);
 
       THEN("It has parameter s pointing to Generic")
       {
-        code_typet::parametert param_s =
+        const code_typet::parametert &param_s =
           require_type::require_parameter(func_code, "s");
         require_type::require_pointer(
           param_s.type(), symbol_typet("java::Generic"));
 
         THEN("s is generic with parameter pointing to java.lang.String")
         {
-          REQUIRE(is_java_generic_type(param_s.type()));
-
-          const java_generic_typet generic_s =
-            to_java_generic_type(param_s.type());
-          const java_generic_parametert generic_param_s =
-            generic_s.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_param_s, symbol_typet("java::java.lang.String"));
+          require_type::require_java_generic_type(
+            param_s.type(),
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.String"}});
         }
       }
 
@@ -123,14 +107,10 @@ SCENARIO(
 
         THEN("It is generic with parameter pointing to java.lang.Integer")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_return_param, symbol_typet("java::java.lang.Integer"));
+          require_type::require_java_generic_type(
+            return_type,
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Integer"}});
         }
       }
     }
@@ -149,45 +129,37 @@ SCENARIO(
 
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
-      const code_typet func_code = to_code_type(func_symbol.type);
+      const code_typet func_code = require_type::require_code(func_symbol.type);
 
       THEN("It has parameter x pointing to Generic")
       {
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with parameter pointing to java.lang.Integer")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_param_x, symbol_typet("java::java.lang.Integer"));
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Integer"}});
         }
       }
 
       THEN("It has parameter y pointing to Generic")
       {
-        code_typet::parametert param_y =
+        const code_typet::parametert &param_y =
           require_type::require_parameter(func_code, "y");
         require_type::require_pointer(
           param_y.type(), symbol_typet("java::Generic"));
 
         THEN("y is generic with parameter pointing to java.lang.Integer")
         {
-          REQUIRE(is_java_generic_type(param_y.type()));
-
-          const java_generic_typet generic_y =
-            to_java_generic_type(param_y.type());
-          const java_generic_parametert generic_param_y =
-            generic_y.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_param_y, symbol_typet("java::java.lang.Integer"));
+          require_type::require_java_generic_type(
+            param_y.type(),
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Integer"}});
         }
       }
 
@@ -199,14 +171,10 @@ SCENARIO(
 
         THEN("It is generic with parameter pointing to java.lang.Integer")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_return_param, symbol_typet("java::java.lang.Integer"));
+          require_type::require_java_generic_type(
+            return_type,
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Integer"}});
         }
       }
     }
@@ -225,45 +193,37 @@ SCENARIO(
 
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
-      const code_typet func_code = to_code_type(func_symbol.type);
+      const code_typet func_code = require_type::require_code(func_symbol.type);
 
       THEN("It has parameter s pointing to Generic")
       {
-        code_typet::parametert param_s =
+        const code_typet::parametert &param_s =
           require_type::require_parameter(func_code, "s");
         require_type::require_pointer(
           param_s.type(), symbol_typet("java::Generic"));
 
         THEN("s is generic with parameter pointing to java.lang.String")
         {
-          REQUIRE(is_java_generic_type(param_s.type()));
-
-          const java_generic_typet generic_s =
-            to_java_generic_type(param_s.type());
-          const java_generic_parametert generic_param_s =
-            generic_s.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_param_s, symbol_typet("java::java.lang.String"));
+          require_type::require_java_generic_type(
+            param_s.type(),
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.String"}});
         }
       }
 
       THEN("It has parameter b pointing to Generic")
       {
-        code_typet::parametert param_b =
+        const code_typet::parametert &param_b =
           require_type::require_parameter(func_code, "b");
         require_type::require_pointer(
           param_b.type(), symbol_typet("java::Generic"));
 
         THEN("b is generic with parameter pointing to java.lang.Boolean")
         {
-          REQUIRE(is_java_generic_type(param_b.type()));
-
-          const java_generic_typet generic_b =
-            to_java_generic_type(param_b.type());
-          const java_generic_parametert generic_param_b =
-            generic_b.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_param_b, symbol_typet("java::java.lang.Boolean"));
+          require_type::require_java_generic_type(
+            param_b.type(),
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Boolean"}});
         }
       }
 
@@ -275,14 +235,10 @@ SCENARIO(
 
         THEN("It is generic with parameter pointing to java.lang.Integer")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_return_param, symbol_typet("java::java.lang.Integer"));
+          require_type::require_java_generic_type(
+            return_type,
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Integer"}});
         }
       }
     }
@@ -302,11 +258,11 @@ SCENARIO(
 
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
-      const code_typet func_code = to_code_type(func_symbol.type);
+      const code_typet func_code = require_type::require_code(func_symbol.type);
 
       THEN("It has parameter inner pointing to Inner")
       {
-        code_typet::parametert param_inner =
+        const code_typet::parametert &param_inner =
           require_type::require_parameter(func_code, "inner");
         require_type::require_pointer(
           param_inner.type(), symbol_typet(class_prefix + "$Inner"));
@@ -320,14 +276,10 @@ SCENARIO(
 
         THEN("It is generic with parameter pointing to java.lang.Integer")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_return_param, symbol_typet("java::java.lang.Integer"));
+          require_type::require_java_generic_type(
+            return_type,
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Integer"}});
         }
       }
     }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
index 92cf70d54af..ac054de5e5e 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_array_class.cpp
@@ -9,12 +9,6 @@
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
 #include <testing-utils/require_type.h>
-#include <testing-utils/require_symbol.h>
-
-
-#include <util/config.h>
-#include <util/language.h>
-#include <java_bytecode/java_bytecode_language.h>
 
 SCENARIO(
   "parse_generic_array_class",
@@ -27,20 +21,19 @@ SCENARIO(
   REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
   const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
-  const class_typet &class_type =
-    require_symbol::require_complete_class(class_symbol);
+  const java_generics_class_typet &java_generic_class =
+    require_type::require_java_generic_class(
+      class_symbol.type, {class_prefix + "::T"});
 
   THEN("There should be field t")
   {
-    struct_union_typet::componentt field_t =
-      require_type::require_component(class_type, "t");
+    const struct_union_typet::componentt &field_t =
+      require_type::require_component(java_generic_class, "t");
 
     THEN("It is an array")
     {
-      pointer_typet field_t_pointer =
-        require_type::require_pointer(
-          field_t.type(),
-          symbol_typet("java::array[reference]"));
+      const pointer_typet &field_t_pointer = require_type::require_pointer(
+        field_t.type(), symbol_typet("java::array[reference]"));
 
       const symbol_typet &field_t_subtype =
         to_symbol_type(field_t_pointer.subtype());
@@ -51,26 +44,22 @@ SCENARIO(
       THEN("The elements have the parametric type T")
       {
         const typet &element = java_array_element_type(field_t_subtype);
-        REQUIRE(is_java_generic_parameter(element));
-        java_generic_parametert element_parameter =
-          to_java_generic_parameter(element);
-        REQUIRE(element_parameter.type_variable().get_identifier() ==
-                class_prefix + "::T");
+        require_type::require_java_generic_parameter(
+          element,
+          {require_type::type_parameter_kindt::Var, class_prefix + "::T"});
       }
     }
   }
 
   THEN("There should be field t2")
   {
-    struct_union_typet::componentt field_t2 =
-      require_type::require_component(class_type, "t2");
+    const struct_union_typet::componentt &field_t2 =
+      require_type::require_component(java_generic_class, "t2");
 
     THEN("It is an array")
     {
-      pointer_typet field_t2_pointer =
-        require_type::require_pointer(
-          field_t2.type(),
-          symbol_typet("java::array[reference]"));
+      const pointer_typet &field_t2_pointer = require_type::require_pointer(
+        field_t2.type(), symbol_typet("java::array[reference]"));
 
       const symbol_typet &field_t2_subtype =
         to_symbol_type(field_t2_pointer.subtype());
@@ -81,34 +70,23 @@ SCENARIO(
       THEN("The elements have type Generic<T>")
       {
         const typet &element = java_array_element_type(field_t2_subtype);
-        REQUIRE(is_java_generic_type(element));
-        const java_generic_typet generic_element =
-          to_java_generic_type(element);
-        require_type::require_pointer(
-          generic_element, symbol_typet
-            ("java::Generic"));
-
-        REQUIRE(is_java_generic_parameter(
-          generic_element.generic_type_variables().front()));
-        java_generic_parametert parameter =
-          generic_element.generic_type_variables().front();
-        REQUIRE(parameter.type_variable().get_identifier() ==
-                class_prefix + "::T");
+        require_type::require_pointer(element, symbol_typet("java::Generic"));
+        require_type::require_java_generic_type(
+          element,
+          {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
       }
     }
   }
 
   THEN("There should be field t3")
   {
-    struct_union_typet::componentt field_t3 =
-      require_type::require_component(class_type, "t3");
+    const struct_union_typet::componentt &field_t3 =
+      require_type::require_component(java_generic_class, "t3");
 
     THEN("It is an array")
     {
-      pointer_typet field_t3_pointer =
-        require_type::require_pointer(
-          field_t3.type(),
-          symbol_typet("java::array[reference]"));
+      const pointer_typet &field_t3_pointer = require_type::require_pointer(
+        field_t3.type(), symbol_typet("java::array[reference]"));
 
       const symbol_typet &field_t3_subtype =
         to_symbol_type(field_t3_pointer.subtype());
@@ -119,18 +97,11 @@ SCENARIO(
       THEN("The elements have type Generic<Integer>")
       {
         const typet &element = java_array_element_type(field_t3_subtype);
-        REQUIRE(is_java_generic_type(element));
-        const java_generic_typet generic_element =
-          to_java_generic_type(element);
-        require_type::require_pointer(
-          generic_element, symbol_typet("java::Generic"));
-
-        REQUIRE(is_java_generic_inst_parameter(
-          generic_element.generic_type_variables().front()));
-        java_generic_parametert parameter =
-          generic_element.generic_type_variables().front();
-        require_type::require_pointer(
-          parameter, symbol_typet("java::java.lang.Integer"));
+        require_type::require_pointer(element, symbol_typet("java::Generic"));
+        require_type::require_java_generic_type(
+          element,
+          {{require_type::type_parameter_kindt::Inst,
+            "java::java.lang.Integer"}});
       }
     }
   }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
index e022ba12ec3..3487a4e4e3e 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class.cpp
@@ -8,15 +8,8 @@
 
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
-#include <testing-utils/require_symbol.h>
 #include <testing-utils/require_type.h>
 
-#include <memory>
-
-#include <util/config.h>
-#include <util/language.h>
-#include <java_bytecode/java_bytecode_language.h>
-
 SCENARIO(
   "parse_generic_class_one_param",
   "[core][java_bytecode][java_bytecode_parse_generics]")
@@ -33,56 +26,37 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
       const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
-      class_typet class_type =
-        require_symbol::require_complete_class(class_symbol);
-      java_generics_class_typet java_generics_class_type =
-        require_type::require_java_generic_class(class_type);
-
-      THEN("It has type variable T")
-      {
-        REQUIRE(java_generics_class_type.generic_types().size() == 1);
-        const auto &generic_types = java_generics_class_type.generic_types();
-
-        REQUIRE(
-          generic_types[0].type_variable().get_identifier() ==
-          class_prefix + "::T");
-      }
+      const java_generics_class_typet &java_generics_class =
+        require_type::require_java_generic_class(
+          class_symbol.type, {class_prefix + "::T"});
 
       const struct_typet class_struct = to_struct_type(class_symbol.type);
       THEN("It has field t")
       {
-        struct_union_typet::componentt field_t =
+        const struct_union_typet::componentt &field_t =
           require_type::require_component(class_struct, "t");
 
         THEN("It is the generic parameter T")
         {
-          REQUIRE(is_java_generic_parameter(field_t.type()));
-
-          const java_generic_parametert field_t_param =
-            to_java_generic_parameter(field_t.type());
-          REQUIRE(
-            field_t_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_parameter(
+            field_t.type(),
+            {require_type::type_parameter_kindt::Var, class_prefix + "::T"});
         }
       }
 
       THEN("It has field g pointing to Generic")
       {
-        struct_union_typet::componentt field_g =
+        const struct_union_typet::componentt &field_g =
           require_type::require_component(class_struct, "g");
         require_type::require_pointer(
           field_g.type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with parameter pointing to java.lang.Integer")
         {
-          REQUIRE(is_java_generic_type(field_g.type()));
-
-          const java_generic_typet generic_field_g =
-            to_java_generic_type(field_g.type());
-          const java_generic_parametert generic_param_field_g =
-            generic_field_g.generic_type_variables().front();
-          require_type::require_pointer(
-            generic_param_field_g, symbol_typet("java::java.lang.Integer"));
+          require_type::require_java_generic_type(
+            field_g.type(),
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Integer"}});
         }
       }
     }
@@ -105,60 +79,33 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
       const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
-      class_typet class_type =
-        require_symbol::require_complete_class(class_symbol);
-      java_generics_class_typet java_generics_class_type =
-        require_type::require_java_generic_class(class_type);
-
-      THEN("It has type variables T and U")
-      {
-        REQUIRE(java_generics_class_type.generic_types().size() == 2);
-        const auto &generic_types = java_generics_class_type.generic_types();
-        {
-          const java_generic_parametert &generic_param = generic_types[0];
-          REQUIRE(
-            generic_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
-        }
-        {
-          const java_generic_parametert &generic_param = generic_types[1];
-          REQUIRE(
-            generic_param.type_variable().get_identifier() ==
-            class_prefix + "::U");
-        }
-      }
+      const java_generics_class_typet &java_generics_class =
+        require_type::require_java_generic_class(
+          class_symbol.type, {class_prefix + "::T", class_prefix + "::U"});
 
       const struct_typet class_struct = to_struct_type(class_symbol.type);
       THEN("It has field t")
       {
-        struct_union_typet::componentt field_t =
+        const struct_union_typet::componentt &field_t =
           require_type::require_component(class_struct, "t");
 
         THEN("It is the generic parameter T")
         {
-          REQUIRE(is_java_generic_parameter(field_t.type()));
-
-          const java_generic_parametert field_t_param =
-            to_java_generic_parameter(field_t.type());
-          REQUIRE(
-            field_t_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_parameter(
+            field_t.type(),
+            {require_type::type_parameter_kindt::Var, class_prefix + "::T"});
         }
       }
       THEN("It has field u")
       {
-        struct_union_typet::componentt field_u =
+        const struct_union_typet::componentt &field_u =
           require_type::require_component(class_struct, "u");
 
         THEN("It is the generic parameter U")
         {
-          REQUIRE(is_java_generic_parameter(field_u.type()));
-
-          const java_generic_parametert field_u_param =
-            to_java_generic_parameter(field_u.type());
-          REQUIRE(
-            field_u_param.type_variable().get_identifier() ==
-            class_prefix + "::U");
+          require_type::require_java_generic_parameter(
+            field_u.type(),
+            {require_type::type_parameter_kindt::Var, class_prefix + "::U"});
         }
       }
     }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp
index 6c66ff1f5a8..47bbcd2c2e9 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_class_with_generic_inner_classes.cpp
@@ -7,15 +7,8 @@
 \*******************************************************************/
 
 #include <testing-utils/catch.hpp>
-#include <testing-utils/require_symbol.h>
-#include <testing-utils/require_type.h>
-
-#include <util/config.h>
-#include <util/language.h>
-
-#include <java_bytecode/java_bytecode_language.h>
-
 #include <testing-utils/load_java_class.h>
+#include <testing-utils/require_type.h>
 
 SCENARIO(
   "parse_generic_class_with_generic_inner_classes_fields",
@@ -32,29 +25,25 @@ SCENARIO(
   {
     REQUIRE(new_symbol_table.has_symbol(class_prefix));
     const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
-
-    const class_typet &class_type =
-      require_symbol::require_complete_class(class_symbol);
+    const java_generics_class_typet &java_generic_class =
+      require_type::require_java_generic_class(
+        class_symbol.type, {class_prefix + "::T"});
 
     THEN(
       "The field component should be a pointer to "
       "GenericClassWithGenericInnerClasses$InnerClass")
     {
       const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field");
+        require_type::require_component(java_generic_class, "field");
 
       require_type::require_pointer(
         field_component.type(), symbol_typet(class_prefix + "$InnerClass"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
       }
     }
 
@@ -63,7 +52,7 @@ SCENARIO(
       "GenericClassWithGenericInnerClasses$GenericInnerClass")
     {
       const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field2");
+        require_type::require_component(java_generic_class, "field2");
 
       require_type::require_pointer(
         field_component.type(),
@@ -71,24 +60,12 @@ SCENARIO(
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_inst_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::Interface_Implementation")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Var,
+             class_prefix + "::T"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"}});
       }
     }
 
@@ -97,7 +74,7 @@ SCENARIO(
       "GenericClassWithGenericInnerClasses$GenericInnerClass")
     {
       const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field3");
+        require_type::require_component(java_generic_class, "field3");
 
       require_type::require_pointer(
         field_component.type(),
@@ -105,24 +82,10 @@ SCENARIO(
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+           {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
       }
     }
 
@@ -131,7 +94,7 @@ SCENARIO(
       "InnerClasses$GenericInnerClass$DoublyNestedInnerClass")
     {
       const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field4");
+        require_type::require_component(java_generic_class, "field4");
 
       require_type::require_pointer(
         field_component.type(),
@@ -140,24 +103,12 @@ SCENARIO(
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::Interface_Implementation")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Var,
+             class_prefix + "::T"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"}});
       }
     }
 
@@ -166,7 +117,7 @@ SCENARIO(
       "InnerClasses$GenericInnerClass$DoublyNestedInnerClass")
     {
       const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field5");
+        require_type::require_component(java_generic_class, "field5");
 
       require_type::require_pointer(
         field_component.type(),
@@ -175,24 +126,10 @@ SCENARIO(
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+           {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
       }
     }
 
@@ -201,7 +138,7 @@ SCENARIO(
       "InnerClasses$GenericInnerClass$DoublyNestedInnerGenericClass")
     {
       const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field6");
+        require_type::require_component(java_generic_class, "field6");
 
       require_type::require_pointer(
         field_component.type(),
@@ -210,31 +147,14 @@ SCENARIO(
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 3);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::Interface_Implementation")));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[2];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::Interface_Implementation")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Var,
+             class_prefix + "::T"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"}});
       }
     }
 
@@ -243,7 +163,7 @@ SCENARIO(
       "InnerClasses$GenericInnerClass$DoublyNestedInnerGenericClass")
     {
       const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field7");
+        require_type::require_component(java_generic_class, "field7");
 
       require_type::require_pointer(
         field_component.type(),
@@ -252,31 +172,11 @@ SCENARIO(
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 3);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[2];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+           {require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+           {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
       }
     }
 
@@ -285,7 +185,7 @@ SCENARIO(
       "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
     {
       const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field8");
+        require_type::require_component(java_generic_class, "field8");
 
       require_type::require_pointer(
         field_component.type(),
@@ -293,31 +193,14 @@ SCENARIO(
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 3);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::Interface_Implementation")));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[2];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::Interface_Implementation")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Var,
+             class_prefix + "::T"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"}});
       }
     }
 
@@ -326,7 +209,7 @@ SCENARIO(
       "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
     {
       const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field9");
+        require_type::require_component(java_generic_class, "field9");
 
       require_type::require_pointer(
         field_component.type(),
@@ -334,31 +217,14 @@ SCENARIO(
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 3);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::Interface_Implementation")));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[2];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Var,
+             class_prefix + "::T"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"},
+           {require_type::type_parameter_kindt::Var,
+             class_prefix + "::T"}});
       }
     }
 
@@ -367,7 +233,7 @@ SCENARIO(
       "GenericClassWithGenericInnerClasses$TwoParamInnerClass")
     {
       const struct_typet::componentt &field_component =
-        require_type::require_component(class_type, "field10");
+        require_type::require_component(java_generic_class, "field10");
 
       require_type::require_pointer(
         field_component.type(),
@@ -375,31 +241,11 @@ SCENARIO(
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 3);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[2];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param.type_variable() ==
-            symbol_typet(class_prefix + "::T"));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+           {require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+           {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
       }
     }
   }
@@ -430,22 +276,17 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 2);
 
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet(class_prefix + "$InnerClass"));
-
-    THEN("The pointer should be generic")
+    THEN("The inputs are of correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet(class_prefix + "$InnerClass"));
+      require_type::require_java_generic_type(
+        param_type.type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
     }
   }
   THEN(
@@ -464,44 +305,25 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 3);
 
-    // Check param input
+    THEN("The inputs are of correct type")
     {
-      const auto param_type =
+      const auto &param_type =
         require_type::require_parameter(function_call, "input");
       require_type::require_pointer(
         param_type.type(), symbol_typet(class_prefix + "$InnerClass"));
+      require_type::require_java_generic_type(
+        param_type.type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
-      THEN("The pointer should be generic")
-      {
-        REQUIRE(is_java_generic_type(param_type.type()));
-        const auto &generic_variables =
-          to_java_generic_type(param_type.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-    }
-
-    // Check param input2
-    {
-      const auto param_type2 =
+      const auto &param_type2 =
         require_type::require_parameter(function_call, "input2");
       require_type::require_pointer(
         param_type2.type(), symbol_typet(class_prefix + "$InnerClass"));
-
-      THEN("The pointer should be generic")
-      {
-        REQUIRE(is_java_generic_type(param_type2.type()));
-        const auto &generic_variables =
-          to_java_generic_type(param_type2.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
+      require_type::require_java_generic_type(
+        param_type2.type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
     }
   }
   THEN(
@@ -519,32 +341,20 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet(class_prefix + "$GenericInnerClass"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs are of correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet(class_prefix + "$GenericInnerClass"));
+      require_type::require_java_generic_type(
+        param_type.type(),
+        {{require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"}});
     }
   }
   THEN(
@@ -562,31 +372,18 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet(class_prefix + "$GenericInnerClass"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs are of correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet(class_prefix + "$GenericInnerClass"));
+      require_type::require_java_generic_type(
+        param_type.type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
     }
   }
   THEN(
@@ -605,33 +402,22 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(),
-      symbol_typet(class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs are of correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+      require_type::require_java_generic_type(
+        param_type.type(),
+        {{require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"}});
     }
   }
   THEN(
@@ -640,8 +426,8 @@ SCENARIO(
   {
     const std::string func_name = ".method6";
     const std::string func_descriptor =
-      ":(LGenericClassWithGenericInnerClasses"
-      "$GenericInnerClass$DoublyNestedInnerClass;)V";
+      ":(LGenericClassWithGenericInnerClasses$"
+        "GenericInnerClass$DoublyNestedInnerClass;)V";
     const std::string process_func_name =
       class_prefix + func_name + func_descriptor;
 
@@ -650,32 +436,20 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 2);
 
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(),
-      symbol_typet(class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
-
-    THEN("The pointer should be generic")
+    THEN("The inputs are of correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+      require_type::require_java_generic_type(
+        param_type.type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
     }
   }
   THEN(
@@ -684,8 +458,8 @@ SCENARIO(
   {
     const std::string func_name = ".method7";
     const std::string func_descriptor =
-      ":(LGenericClassWithGenericInnerClasses"
-      "$GenericInnerClass$DoublyNestedInnerGenericClass;)V";
+      ":(LGenericClassWithGenericInnerClasses$"
+      "GenericInnerClass$DoublyNestedInnerGenericClass;)V";
     const std::string process_func_name =
       class_prefix + func_name + func_descriptor;
 
@@ -694,41 +468,24 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(),
-      symbol_typet(
-        class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs are of correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+      require_type::require_java_generic_type(
+        param_type.type(),
+        {{require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"}});
     }
   }
   THEN(
@@ -737,8 +494,8 @@ SCENARIO(
   {
     const std::string func_name = ".method8";
     const std::string func_descriptor =
-      ":(LGenericClassWithGenericInnerClasses"
-      "$GenericInnerClass$DoublyNestedInnerGenericClass;)V";
+      ":(LGenericClassWithGenericInnerClasses$"
+      "GenericInnerClass$DoublyNestedInnerGenericClass;)V";
     const std::string process_func_name =
       class_prefix + func_name + func_descriptor;
 
@@ -747,39 +504,21 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(),
-      symbol_typet(
-        class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs are of correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+      require_type::require_java_generic_type(
+        param_type.type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
     }
   }
   THEN(
@@ -797,39 +536,22 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet(class_prefix + "$TwoParamInnerClass"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs are of the correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet(class_prefix + "$TwoParamInnerClass"));
+      require_type::require_java_generic_type(
+        param_type.type(),
+        {{require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"}});
     }
   }
   THEN(
@@ -847,38 +569,22 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet(class_prefix + "$TwoParamInnerClass"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs are of the correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet(class_prefix + "$TwoParamInnerClass"));
+      require_type::require_java_generic_type(
+        param_type.type(),
+        {{require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"},
+         {require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"}});
     }
   }
   THEN(
@@ -896,37 +602,19 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 2);
 
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet(class_prefix + "$TwoParamInnerClass"));
-
-    THEN("The pointer should be generic")
+    THEN("The inputs should be of the correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet(class_prefix + "$TwoParamInnerClass"));
+      require_type::require_java_generic_type(
+        param_type.type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
     }
   }
   THEN(
@@ -935,8 +623,7 @@ SCENARIO(
   {
     const std::string func_name = ".ret_method1";
     const std::string func_descriptor =
-      ":()"
-      "LGenericClassWithGenericInnerClasses$InnerClass;";
+      ":()LGenericClassWithGenericInnerClasses$InnerClass;";
     const std::string process_func_name =
       class_prefix + func_name + func_descriptor;
 
@@ -945,21 +632,16 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 1);
 
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet(class_prefix + "$InnerClass"));
-
-    THEN("The pointer should be generic")
+    THEN("The return type should be correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
+      require_type::require_pointer(
+        function_call.return_type(),
+        symbol_typet(class_prefix + "$InnerClass"));
+      require_type::require_java_generic_type(
+        function_call.return_type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
     }
   }
   THEN(
@@ -977,32 +659,19 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(class_prefix + "$GenericInnerClass"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type should be correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
+      require_type::require_pointer(
+        function_call.return_type(),
+        symbol_typet(class_prefix + "$GenericInnerClass"));
+      require_type::require_java_generic_type(
+        function_call.return_type(),
+        {{require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"}});
     }
   }
   THEN(
@@ -1020,31 +689,17 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 1);
 
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(class_prefix + "$GenericInnerClass"));
-
-    THEN("The pointer should be generic")
+    THEN("The return type should be correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
+      require_type::require_pointer(
+        function_call.return_type(),
+        symbol_typet(class_prefix + "$GenericInnerClass"));
+      require_type::require_java_generic_type(
+        function_call.return_type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
     }
   }
   THEN(
@@ -1053,8 +708,8 @@ SCENARIO(
   {
     const std::string func_name = ".ret_method4";
     const std::string func_descriptor =
-      ":()LGenericClassWithGenericInner"
-      "Classes$GenericInnerClass$DoublyNestedInnerClass;";
+      ":()LGenericClassWithGenericInnerClasses$"
+      "GenericInnerClass$DoublyNestedInnerClass;";
     const std::string process_func_name =
       class_prefix + func_name + func_descriptor;
 
@@ -1063,32 +718,20 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type should be correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
+      require_type::require_pointer(
+        function_call.return_type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+      require_type::require_java_generic_type(
+        function_call.return_type(),
+        {{require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"}});
     }
   }
   THEN(
@@ -1097,8 +740,8 @@ SCENARIO(
   {
     const std::string func_name = ".ret_method5";
     const std::string func_descriptor =
-      ":()LGenericClassWithGenericInner"
-      "Classes$GenericInnerClass$DoublyNestedInnerClass;";
+      ":()LGenericClassWithGenericInnerClasses$"
+      "GenericInnerClass$DoublyNestedInnerClass;";
     const std::string process_func_name =
       class_prefix + func_name + func_descriptor;
 
@@ -1107,31 +750,18 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type should be correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
+      require_type::require_pointer(
+        function_call.return_type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerClass"));
+      require_type::require_java_generic_type(
+        function_call.return_type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
     }
   }
   THEN(
@@ -1140,8 +770,8 @@ SCENARIO(
   {
     const std::string func_name = ".ret_method6";
     const std::string func_descriptor =
-      ":()LGenericClassWithGenericInner"
-      "Classes$GenericInnerClass$DoublyNestedInnerGenericClass;";
+      ":()LGenericClassWithGenericInnerClasses$"
+      "GenericInnerClass$DoublyNestedInnerGenericClass;";
     const std::string process_func_name =
       class_prefix + func_name + func_descriptor;
 
@@ -1150,40 +780,22 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 1);
 
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(
-        class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
-
-    THEN("The pointer should be generic")
+    THEN("The return type should be correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_inst_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
+      require_type::require_pointer(
+        function_call.return_type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+      require_type::require_java_generic_type(
+        function_call.return_type(),
+        {{require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"}});
     }
   }
   THEN(
@@ -1192,8 +804,8 @@ SCENARIO(
   {
     const std::string func_name = ".ret_method7";
     const std::string func_descriptor =
-      ":()LGenericClassWithGenericInner"
-      "Classes$GenericInnerClass$DoublyNestedInnerGenericClass;";
+      ":()LGenericClassWithGenericInnerClasses$"
+      "GenericInnerClass$DoublyNestedInnerGenericClass;";
     const std::string process_func_name =
       class_prefix + func_name + func_descriptor;
 
@@ -1202,38 +814,19 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(
-        class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type should be correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
+      require_type::require_pointer(
+        function_call.return_type(),
+        symbol_typet(
+          class_prefix + "$GenericInnerClass$DoublyNestedInnerGenericClass"));
+      require_type::require_java_generic_type(
+        function_call.return_type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
     }
   }
   THEN(
@@ -1242,8 +835,8 @@ SCENARIO(
   {
     const std::string func_name = ".ret_method8";
     const std::string func_descriptor =
-      ":()LGenericClassWithGenericInner"
-      "Classes$TwoParamInnerClass;";
+      ":()LGenericClassWithGenericInnerClasses$"
+      "TwoParamInnerClass;";
     const std::string process_func_name =
       class_prefix + func_name + func_descriptor;
 
@@ -1252,39 +845,21 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 1);
 
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(class_prefix + "$TwoParamInnerClass"));
-
-    THEN("The pointer should be generic")
+    THEN("The return type should be correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
+      require_type::require_pointer(
+        function_call.return_type(),
+        symbol_typet(class_prefix + "$TwoParamInnerClass"));
+      require_type::require_java_generic_type(
+        function_call.return_type(),
+        {{require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"}});
     }
   }
   THEN(
@@ -1302,38 +877,21 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(class_prefix + "$TwoParamInnerClass"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type should be correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
+      require_type::require_pointer(
+        function_call.return_type(),
+        symbol_typet(class_prefix + "$TwoParamInnerClass"));
+      require_type::require_java_generic_type(
+        function_call.return_type(),
+        {{require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Inst,
+           "java::Interface_Implementation"},
+         {require_type::type_parameter_kindt::Var,
+           class_prefix + "::T"}});
     }
   }
   THEN(
@@ -1351,37 +909,18 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(),
-      symbol_typet(class_prefix + "$TwoParamInnerClass"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type should be correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 3);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
-      {
-        const java_generic_parametert &generic_param = generic_variables[2];
-        REQUIRE(is_java_generic_parameter(generic_param));
-        REQUIRE(
-          generic_param.type_variable() == symbol_typet(class_prefix + "::T"));
-      }
+      require_type::require_pointer(
+        function_call.return_type(),
+        symbol_typet(class_prefix + "$TwoParamInnerClass"));
+      require_type::require_java_generic_type(
+        function_call.return_type(),
+        {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+         {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
     }
   }
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
index 04c2dcb2eae..cbe8b51f88b 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
@@ -7,14 +7,6 @@
 \*******************************************************************/
 
 #include <testing-utils/catch.hpp>
-
-#include <util/config.h>
-#include <util/cmdline.h>
-#include <util/language.h>
-#include <util/prefix.h>
-
-#include <java_bytecode/java_bytecode_language.h>
-
 #include <testing-utils/load_java_class.h>
 #include <testing-utils/require_type.h>
 
@@ -40,25 +32,20 @@ SCENARIO(
 
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
       THEN("It contains parameter x pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          REQUIRE(
-            generic_param_x.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
         }
       }
     }
@@ -76,25 +63,20 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
       THEN("It contains parameter x pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          REQUIRE(
-            generic_param_x.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -118,25 +100,20 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
       THEN("It contains parameter x pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          REQUIRE(
-            generic_param_x.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -160,25 +137,20 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
       THEN("It contains parameter x pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          REQUIRE(
-            generic_param_x.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -202,25 +174,20 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
       THEN("It contains parameter x pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          REQUIRE(
-            generic_param_x.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -244,46 +211,35 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
-      const code_typet func_code = to_code_type(func_symbol.type);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 2);
 
       THEN("It contains parameter t pointing to Generic")
       {
-        code_typet::parametert param_t =
+        const code_typet::parametert &param_t =
           require_type::require_parameter(func_code, "t");
         require_type::require_pointer(
           param_t.type(), symbol_typet("java::Generic"));
 
         THEN("t is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_t.type()));
-
-          const java_generic_typet generic_t =
-            to_java_generic_type(param_t.type());
-          const java_generic_parametert generic_param_t =
-            generic_t.generic_type_variables().front();
-          REQUIRE(
-            generic_param_t.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_t.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
         }
       }
       THEN("It contains parameter u pointing to Generic")
       {
-        code_typet::parametert param_u =
+        const code_typet::parametert &param_u =
           require_type::require_parameter(func_code, "u");
         require_type::require_pointer(
           param_u.type(), symbol_typet("java::Generic"));
 
         THEN("u is generic with type variable U")
         {
-          REQUIRE(is_java_generic_type(param_u.type()));
-
-          const java_generic_typet generic_u =
-            to_java_generic_type(param_u.type());
-          const java_generic_parametert generic_param_u =
-            generic_u.generic_type_variables().front();
-          REQUIRE(
-            generic_param_u.type_variable().get_identifier() ==
-            class_prefix + "::U");
+          require_type::require_java_generic_type(
+            param_u.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::U"}});
         }
       }
     }
@@ -301,26 +257,22 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
-      const code_typet func_code = to_code_type(func_symbol.type);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 2);
 
       THEN("It contains parameter t pointing to Generic")
       {
-        code_typet::parametert param_t =
+        const code_typet::parametert &param_t =
           require_type::require_parameter(func_code, "t");
         require_type::require_pointer(
           param_t.type(), symbol_typet("java::Generic"));
 
         THEN("t is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_t.type()));
-
-          const java_generic_typet generic_t =
-            to_java_generic_type(param_t.type());
-          const java_generic_parametert generic_param_t =
-            generic_t.generic_type_variables().front();
-          REQUIRE(
-            generic_param_t.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_t.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
+
           THEN("The bounds are set correctly")
           {
             // TODO: the bounds are not parsed yet; extend the tests when
@@ -330,22 +282,17 @@ SCENARIO(
       }
       THEN("It contains parameter u pointing to Generic")
       {
-        code_typet::parametert param_u =
+        const code_typet::parametert &param_u =
           require_type::require_parameter(func_code, "u");
         require_type::require_pointer(
           param_u.type(), symbol_typet("java::Generic"));
 
         THEN("u is generic with type variable U")
         {
-          REQUIRE(is_java_generic_type(param_u.type()));
-
-          const java_generic_typet generic_u =
-            to_java_generic_type(param_u.type());
-          const java_generic_parametert generic_param_u =
-            generic_u.generic_type_variables().front();
-          REQUIRE(
-            generic_param_u.type_variable().get_identifier() ==
-            class_prefix + "::U");
+          require_type::require_java_generic_type(
+            param_u.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::U"}});
+
           THEN("The bounds are set correctly")
           {
             // TODO: the bounds are not parsed yet; extend the tests when
@@ -369,24 +316,18 @@ SCENARIO(
 
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 0);
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
         }
       }
     }
@@ -405,24 +346,20 @@ SCENARIO(
 
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 0);
       // TODO: should point to something else than Object?? - possibly
-      // connecte dto bounds - issue TG-1286
+      // connected to bounds - issue TG-1286
       THEN("It has return type pointing to java.lang.Object")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::java.lang.Object"));
+          func_code.return_type(), symbol_typet("java::java.lang.Object"));
 
         THEN("It is the generic parameter T")
         {
-          REQUIRE(is_java_generic_parameter(return_type));
-
-          const java_generic_parametert generic_return_param =
-            to_java_generic_parameter(return_type);
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_parameter(
+            func_code.return_type(),
+            {require_type::type_parameter_kindt::Var, class_prefix + "::T"});
         }
       }
     }
@@ -440,24 +377,17 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code = to_code_type(func_symbol.type);
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -481,24 +411,18 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 0);
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -522,24 +446,18 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 0);
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -563,24 +481,18 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 0);
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -605,47 +517,34 @@ SCENARIO(
 
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
 
       THEN("It contains parameter x pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          REQUIRE(
-            generic_param_x.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
         }
       }
 
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
         }
       }
     }
@@ -663,26 +562,21 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
 
       THEN("It contains parameter x pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          REQUIRE(
-            generic_param_x.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -694,22 +588,14 @@ SCENARIO(
 
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -733,26 +619,21 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
 
       THEN("It contains parameter x pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          REQUIRE(
-            generic_param_x.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -764,22 +645,14 @@ SCENARIO(
 
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -803,26 +676,21 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
 
       THEN("It contains parameter x pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          REQUIRE(
-            generic_param_x.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -834,22 +702,14 @@ SCENARIO(
 
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -874,26 +734,21 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
 
       THEN("It contains parameter x pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_x =
+        const code_typet::parametert &param_x =
           require_type::require_parameter(func_code, "x");
         require_type::require_pointer(
           param_x.type(), symbol_typet("java::Generic"));
 
         THEN("x is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(param_x.type()));
-
-          const java_generic_typet generic_x =
-            to_java_generic_type(param_x.type());
-          const java_generic_parametert generic_param_x =
-            generic_x.generic_type_variables().front();
-          REQUIRE(
-            generic_param_x.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            param_x.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -905,22 +760,14 @@ SCENARIO(
 
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -944,48 +791,34 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
-      const code_typet func_code = to_code_type(func_symbol.type);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
 
       THEN("It contains parameter u pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_u =
+        const code_typet::parametert &param_u =
           require_type::require_parameter(func_code, "u");
         require_type::require_pointer(
           param_u.type(), symbol_typet("java::Generic"));
 
         THEN("u is generic with type variable U")
         {
-          REQUIRE(is_java_generic_type(param_u.type()));
-
-          const java_generic_typet generic_u =
-            to_java_generic_type(param_u.type());
-          const java_generic_parametert generic_param_u =
-            generic_u.generic_type_variables().front();
-          REQUIRE(
-            generic_param_u.type_variable().get_identifier() ==
-            class_prefix + "::U");
+          require_type::require_java_generic_type(
+            param_u.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::U"}});
         }
       }
 
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
         }
       }
     }
@@ -1003,27 +836,21 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
-      const code_typet func_code = to_code_type(func_symbol.type);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 1);
 
       THEN("It contains parameter u pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        code_typet::parametert param_u =
+        const code_typet::parametert &param_u =
           require_type::require_parameter(func_code, "u");
         require_type::require_pointer(
           param_u.type(), symbol_typet("java::Generic"));
 
         THEN("u is generic with type variable U")
         {
-          REQUIRE(is_java_generic_type(param_u.type()));
-
-          const java_generic_typet generic_u =
-            to_java_generic_type(param_u.type());
-          const java_generic_parametert generic_param_u =
-            generic_u.generic_type_variables().front();
-          REQUIRE(
-            generic_param_u.type_variable().get_identifier() ==
-            class_prefix + "::U");
+          require_type::require_java_generic_type(
+            param_u.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::U"}});
 
           THEN("The bounds are set correctly")
           {
@@ -1035,22 +862,14 @@ SCENARIO(
 
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
@@ -1074,68 +893,49 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
-      const code_typet func_code = to_code_type(func_symbol.type);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 2);
 
       THEN("It contains parameter u pointing to Generic")
       {
-        code_typet::parametert param_u =
+        const code_typet::parametert &param_u =
           require_type::require_parameter(func_code, "u");
         require_type::require_pointer(
           param_u.type(), symbol_typet("java::Generic"));
 
         THEN("u is generic with type variable U")
         {
-          REQUIRE(is_java_generic_type(param_u.type()));
-
-          const java_generic_typet generic_u =
-            to_java_generic_type(param_u.type());
-          const java_generic_parametert generic_param_u =
-            generic_u.generic_type_variables().front();
-          REQUIRE(
-            generic_param_u.type_variable().get_identifier() ==
-            class_prefix + "::U");
+          require_type::require_java_generic_type(
+            param_u.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::U"}});
         }
       }
 
       THEN("It contains parameter v pointing to Generic")
       {
-        code_typet::parametert param_v =
+        const code_typet::parametert &param_v =
           require_type::require_parameter(func_code, "v");
         require_type::require_pointer(
           param_v.type(), symbol_typet("java::Generic"));
 
         THEN("v is generic with type variable V")
         {
-          REQUIRE(is_java_generic_type(param_v.type()));
-
-          const java_generic_typet generic_v =
-            to_java_generic_type(param_v.type());
-          const java_generic_parametert generic_param_v =
-            generic_v.generic_type_variables().front();
-          REQUIRE(
-            generic_param_v.type_variable().get_identifier() ==
-            class_prefix + "::V");
+          require_type::require_java_generic_type(
+            param_v.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::V"}});
         }
       }
 
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
         }
       }
     }
@@ -1153,26 +953,21 @@ SCENARIO(
       REQUIRE(new_symbol_table.has_symbol(process_func_name));
       const symbolt func_symbol =
         new_symbol_table.lookup_ref(process_func_name);
-      const code_typet func_code = to_code_type(func_symbol.type);
+      const code_typet func_code =
+        require_type::require_code(func_symbol.type, 2);
 
       THEN("It contains parameter u pointing to Generic")
       {
-        code_typet::parametert param_u =
+        const code_typet::parametert &param_u =
           require_type::require_parameter(func_code, "u");
         require_type::require_pointer(
           param_u.type(), symbol_typet("java::Generic"));
 
         THEN("u is generic with type variable U")
         {
-          REQUIRE(is_java_generic_type(param_u.type()));
-
-          const java_generic_typet generic_u =
-            to_java_generic_type(param_u.type());
-          const java_generic_parametert generic_param_u =
-            generic_u.generic_type_variables().front();
-          REQUIRE(
-            generic_param_u.type_variable().get_identifier() ==
-            class_prefix + "::U");
+          require_type::require_java_generic_type(
+            param_u.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::U"}});
 
           THEN("The bounds are set correctly")
           {
@@ -1184,22 +979,16 @@ SCENARIO(
 
       THEN("It contains parameter v pointing to Generic")
       {
-        code_typet::parametert param_v =
+        const code_typet::parametert &param_v =
           require_type::require_parameter(func_code, "v");
         require_type::require_pointer(
           param_v.type(), symbol_typet("java::Generic"));
 
         THEN("v is generic with type variable V")
         {
-          REQUIRE(is_java_generic_type(param_v.type()));
-
-          const java_generic_typet generic_v =
-            to_java_generic_type(param_v.type());
-          const java_generic_parametert generic_param_v =
-            generic_v.generic_type_variables().front();
-          REQUIRE(
-            generic_param_v.type_variable().get_identifier() ==
-            class_prefix + "::V");
+          require_type::require_java_generic_type(
+            param_v.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::V"}});
 
           THEN("The bounds are set correctly")
           {
@@ -1211,22 +1000,14 @@ SCENARIO(
 
       THEN("It has return type pointing to Generic")
       {
-        const code_typet func_code = to_code_type(func_symbol.type);
-        const typet return_type = func_code.return_type();
         require_type::require_pointer(
-          return_type, symbol_typet("java::Generic"));
+          func_code.return_type(), symbol_typet("java::Generic"));
 
         THEN("It is generic with type variable T")
         {
-          REQUIRE(is_java_generic_type(return_type));
-
-          const java_generic_typet generic_return_type =
-            to_java_generic_type(return_type);
-          const java_generic_parametert generic_return_param =
-            generic_return_type.generic_type_variables().front();
-          REQUIRE(
-            generic_return_param.type_variable().get_identifier() ==
-            class_prefix + "::T");
+          require_type::require_java_generic_type(
+            func_code.return_type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
 
           THEN("The bounds are set correctly")
           {
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
index b4a43566db3..6dba3792baf 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
@@ -18,46 +18,48 @@ SCENARIO(
   "parse_generic_wildcard",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
-  const symbol_tablet &new_symbol_table=
-    load_java_class(
-      "WildcardGenericFunctions",
-      "./java_bytecode/java_bytecode_parse_generics");
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "WildcardGenericFunctions", "./java_bytecode/java_bytecode_parse_generics");
 
-  std::string class_prefix="java::WildcardGenericFunctions";
+  std::string class_prefix = "java::WildcardGenericFunctions";
 
   THEN("There should be a symbol for processSimpleGeneric")
   {
-    const std::string func_name=".processSimpleGeneric";
+    const std::string func_name = ".processSimpleGeneric";
     const std::string func_descriptor = ":(LGeneric;)V";
-    const std::string process_func_name=class_prefix+func_name+func_descriptor;
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
   }
 
   THEN("There should be a symbol for processUpperBoundInterfaceGeneric")
   {
-    const std::string func_name=".processUpperBoundInterfaceGeneric";
+    const std::string func_name = ".processUpperBoundInterfaceGeneric";
     const std::string func_descriptor = ":(LGeneric;)V";
-    const std::string process_func_name=class_prefix+func_name+func_descriptor;
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
   }
 
   THEN("There should be a symbol for processUpperBoundClassGeneric")
   {
-    const std::string func_name=".processUpperBoundClassGeneric";
+    const std::string func_name = ".processUpperBoundClassGeneric";
     const std::string func_descriptor = ":(LGeneric;)V";
-    const std::string process_func_name=class_prefix+func_name+func_descriptor;
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
   }
 
   THEN("There should be a symbol for processLowerBoundGeneric")
   {
-    const std::string func_name=".processLowerBoundGeneric";
+    const std::string func_name = ".processLowerBoundGeneric";
     const std::string func_descriptor =
       ":(LGeneric;LInterface_Implementation;)V";
-    const std::string process_func_name=class_prefix+func_name+func_descriptor;
+    const std::string process_func_name =
+      class_prefix + func_name + func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
   }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp
index 820b5d6f412..17441a81dd9 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_nested_generics.cpp
@@ -8,17 +8,8 @@
 
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
-#include <testing-utils/require_symbol.h>
 #include <testing-utils/require_type.h>
 
-#include <util/cmdline.h>
-#include <util/config.h>
-#include <util/language.h>
-#include <util/prefix.h>
-#include <util/std_types.h>
-
-#include <java_bytecode/java_bytecode_language.h>
-
 SCENARIO(
   "parse_nested_generics_fields",
   "[core][java_bytecode][java_bytecode_parse_generics]")
@@ -33,29 +24,21 @@ SCENARIO(
     const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
 
     const class_typet &class_type =
-      require_symbol::require_complete_class(class_symbol);
+      require_type::require_java_non_generic_class(class_symbol.type);
 
     THEN("The field component should be a pointer to java::Generic")
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::Generic"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -65,23 +48,15 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field2");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::Generic"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -91,23 +66,15 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field3");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::Generic"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -117,23 +84,15 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field4");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::Generic"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -143,23 +102,16 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field5");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::Generic"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::GenericTwoParam")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst,
+            "java::GenericTwoParam"}});
+
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -169,23 +121,16 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field6");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::Generic"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::GenericTwoParam")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst,
+            "java::GenericTwoParam"}});
+
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -195,23 +140,15 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field7");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::Generic"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 1);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::GenericTwoParam")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst,
+            "java::GenericTwoParam"}});
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -221,30 +158,15 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field8");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::GenericTwoParam"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -254,30 +176,15 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field9");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::GenericTwoParam"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -287,30 +194,16 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field10");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::GenericTwoParam"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -320,30 +213,18 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field11");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::GenericTwoParam"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::Interface_Implementation")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst,
+             "java::Generic"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"}});
+
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -353,30 +234,18 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field12");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::GenericTwoParam"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::Interface_Implementation")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst,
+             "java::Generic"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"}});
+
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -386,30 +255,16 @@ SCENARIO(
     {
       const struct_typet::componentt &field_component =
         require_type::require_component(class_type, "field13");
-
       require_type::require_pointer(
         field_component.type(), symbol_typet("java::GenericTwoParam"));
 
       THEN("The pointer should be generic")
       {
-        REQUIRE(is_java_generic_type(field_component.type()));
-        const auto &generic_variables =
-          to_java_generic_type(field_component.type()).generic_type_variables();
-        REQUIRE(generic_variables.size() == 2);
-        {
-          const java_generic_parametert &generic_param = generic_variables[0];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param == java_generic_inst_parametert(
-                               symbol_typet("java::GenericTwoParam")));
-        }
-        {
-          const java_generic_parametert &generic_param = generic_variables[1];
-          REQUIRE(is_java_generic_parameter(generic_param));
-          REQUIRE(
-            generic_param ==
-            java_generic_inst_parametert(symbol_typet("java::Generic")));
-        }
+        require_type::require_java_generic_type(
+          field_component.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::GenericTwoParam"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
         // TODO: extend tests when nested generics are parsed correctly -
         // issue TG-1301
       }
@@ -438,25 +293,23 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 2);
 
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::Generic"));
-
-    THEN("The pointer should be generic")
+    THEN("The inputs are of correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -472,25 +325,23 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::Generic"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs are of oorrect type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -506,25 +357,24 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::Generic"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs are of correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -540,25 +390,24 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 2);
 
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::Generic"));
-
-    THEN("The pointer should be generic")
+    THEN("The inputs are of correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -574,25 +423,25 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::Generic"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs are of correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst,
+            "java::GenericTwoParam"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -608,25 +457,25 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::Generic"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs have correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst,
+            "java::GenericTwoParam"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -642,25 +491,25 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::Generic"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs have correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst,
+            "java::GenericTwoParam"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -676,33 +525,25 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 2);
 
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::GenericTwoParam"));
-
-    THEN("The pointer should be generic")
+    THEN("The inputs have correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 
@@ -718,33 +559,24 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 2);
 
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::GenericTwoParam"));
-
-    THEN("The pointer should be generic")
+    THEN("The inputs have correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 
@@ -760,33 +592,25 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 2);
 
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::GenericTwoParam"));
-
-    THEN("The pointer should be generic")
+    THEN("The inputs have correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 
@@ -802,33 +626,27 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::GenericTwoParam"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs have correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst,
+             "java::Generic"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 
@@ -844,33 +662,27 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::GenericTwoParam"));
+      require_type::require_code(function_symbol.type, 2);
 
-    THEN("The pointer should be generic")
+    THEN("The inputs have correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst,
+             "java::Generic"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 
@@ -886,33 +698,25 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 2);
 
-    const auto param_type =
-      require_type::require_parameter(function_call, "input");
-    require_type::require_pointer(
-      param_type.type(), symbol_typet("java::GenericTwoParam"));
-
-    THEN("The pointer should be generic")
+    THEN("The inputs have correct type")
     {
-      REQUIRE(is_java_generic_type(param_type.type()));
-      const auto &generic_variables =
-        to_java_generic_type(param_type.type()).generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      }
+      const auto &param_type =
+        require_type::require_parameter(function_call, "input");
+      require_type::require_pointer(
+        param_type.type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
+        require_type::require_java_generic_type(
+          param_type.type(),
+          {{require_type::type_parameter_kindt::Inst, "java::GenericTwoParam"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 
@@ -928,24 +732,22 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::Generic"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -961,24 +763,22 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::Generic"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -994,24 +794,22 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 1);
 
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::Generic"));
-
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -1027,24 +825,22 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 1);
 
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::Generic"));
-
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::Generic")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -1060,24 +856,23 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::Generic"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst,
+            "java::GenericTwoParam"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -1093,24 +888,23 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::Generic"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst,
+            "java::GenericTwoParam"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -1126,24 +920,23 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::Generic"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 1);
-      const java_generic_parametert &generic_param = generic_variables[0];
-      REQUIRE(
-        generic_param ==
-        java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::Generic"));
+
+      THEN("The pointer should be generic")
+      {
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst,
+            "java::GenericTwoParam"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
+      }
     }
   }
 
@@ -1159,32 +952,23 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
+      require_type::require_code(function_symbol.type, 1);
 
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
-
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
-      }
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 
@@ -1200,32 +984,23 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
-      }
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 
@@ -1241,32 +1016,23 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
-      }
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst, "java::Generic"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 
@@ -1282,32 +1048,25 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
-      }
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst,
+             "java::Generic"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 
@@ -1323,32 +1082,25 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
-      }
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param == java_generic_inst_parametert(
-                             symbol_typet("java::Interface_Implementation")));
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst,
+             "java::Generic"},
+           {require_type::type_parameter_kindt::Inst,
+             "java::Interface_Implementation"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 
@@ -1364,32 +1116,23 @@ SCENARIO(
       new_symbol_table.lookup_ref(process_func_name);
 
     const code_typet &function_call =
-      require_type::require_code(function_symbol.type);
-
-    require_type::require_pointer(
-      function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+      require_type::require_code(function_symbol.type, 1);
 
-    THEN("The pointer should be generic")
+    THEN("The return type is correct")
     {
-      REQUIRE(is_java_generic_type(function_call.return_type()));
-      const auto &generic_variables =
-        to_java_generic_type(function_call.return_type())
-          .generic_type_variables();
-      REQUIRE(generic_variables.size() == 2);
-      {
-        const java_generic_parametert &generic_param = generic_variables[0];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::GenericTwoParam")));
-      }
+      require_type::require_pointer(
+        function_call.return_type(), symbol_typet("java::GenericTwoParam"));
+
+      THEN("The pointer should be generic")
       {
-        const java_generic_parametert &generic_param = generic_variables[1];
-        REQUIRE(
-          generic_param ==
-          java_generic_inst_parametert(symbol_typet("java::Generic")));
+        require_type::require_java_generic_type(
+          function_call.return_type(),
+          {{require_type::type_parameter_kindt::Inst, "java::GenericTwoParam"},
+           {require_type::type_parameter_kindt::Inst, "java::Generic"}});
+
+        // TODO: extend tests when nested generics are parsed correctly - issue
+        // TG-1301
       }
-      // TODO: extend tests when nested generics are parsed correctly - issue
-      // TG-1301
     }
   }
 }
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_recursive_generic_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_recursive_generic_class.cpp
index 30c87045412..a9e888bb800 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_recursive_generic_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_recursive_generic_class.cpp
@@ -9,21 +9,15 @@
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
 
-#include <util/config.h>
-#include <util/language.h>
-
-#include <java_bytecode/java_bytecode_language.h>
-#include <util/namespace.h>
-
 SCENARIO(
   "parse_recursive_generic_class",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
-  const symbol_tablet &new_symbol_table=
-    load_java_class("RecursiveGeneric", ""
-      "./java_bytecode/java_bytecode_parse_generics");
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "RecursiveGeneric",
+    "./java_bytecode/java_bytecode_parse_generics");
 
-  std::string class_prefix="java::RecursiveGeneric";
+  std::string class_prefix = "java::RecursiveGeneric";
 
   REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
index 82186f2ddaf..cb6b6289502 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_signature_descriptor_mismatch.cpp
@@ -8,13 +8,7 @@
 
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
-#include <testing-utils/require_symbol.h>
-
-#include <memory>
-
-#include <util/config.h>
-#include <util/language.h>
-#include <java_bytecode/java_bytecode_language.h>
+#include <testing-utils/require_type.h>
 
 SCENARIO(
   "parse_signature_descriptor_mismatch",
@@ -27,30 +21,30 @@ SCENARIO(
   const std::string class_prefix = "java::SignatureDescriptorMismatch";
   REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
-  const std::string inner_prefix=class_prefix+"$Inner";
+  const std::string inner_prefix = class_prefix + "$Inner";
   THEN("There is a (complete) symbol for the inner class Inner")
   {
     REQUIRE(new_symbol_table.has_symbol(inner_prefix));
 
-    const symbolt &inner_symbol=new_symbol_table.lookup_ref(inner_prefix);
-    const class_typet &inner_class_type=
-      require_symbol::require_complete_class(inner_symbol);
+    const symbolt &inner_symbol = new_symbol_table.lookup_ref(inner_prefix);
+    const class_typet &inner_class_type =
+      require_type::require_java_non_generic_class(inner_symbol.type);
   }
 
   THEN(
     "There is a symbol for the constructor of the class Inner with "
     "the correct number of parameters")
   {
-    const std::string func_name=".<init>";
+    const std::string func_name = ".<init>";
     const std::string func_descriptor =
       ":(LSignatureDescriptorMismatch;LAbstractGeneric;)V";
-    const std::string process_func_name=
-      inner_prefix+func_name+func_descriptor;
+    const std::string process_func_name =
+      inner_prefix + func_name + func_descriptor;
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
 
-    const code_typet func_code=
+    const code_typet func_code =
       to_code_type(new_symbol_table.lookup_ref(process_func_name).type);
-    REQUIRE(func_code.parameters().size()==3);
+    REQUIRE(func_code.parameters().size() == 3);
 
     // TODO: for now, the parameters are not generic because we fall back to
     // descriptor due to mismatch; enable tests when fixed - issue TG-1309
@@ -62,30 +56,30 @@ SCENARIO(
     // REQUIRE(is_java_generic_type(param_t.type()));
   }
 
-  const std::string inner_enum_prefix=class_prefix+"$InnerEnum";
+  const std::string inner_enum_prefix = class_prefix + "$InnerEnum";
   THEN("There is a (complete) symbol for the inner enum InnerEnum")
   {
     REQUIRE(new_symbol_table.has_symbol(inner_enum_prefix));
 
-    const symbolt &inner_enum_symbol=
+    const symbolt &inner_enum_symbol =
       new_symbol_table.lookup_ref(inner_enum_prefix);
-    const class_typet &inner_enum_class_type=
-      require_symbol::require_complete_class(inner_enum_symbol);
+    const class_typet &inner_enum_class_type =
+      require_type::require_java_non_generic_class(inner_enum_symbol.type);
   }
 
   THEN(
     "There is a symbol for the constructor of the inner enum with the "
     "correct number of parameters")
   {
-    const std::string func_name=".<init>";
-    const std::string func_descriptor=":(Ljava/lang/String;I)V";
-    const std::string process_func_name=
-      inner_enum_prefix+func_name+func_descriptor;
+    const std::string func_name = ".<init>";
+    const std::string func_descriptor = ":(Ljava/lang/String;I)V";
+    const std::string process_func_name =
+      inner_enum_prefix + func_name + func_descriptor;
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
 
-    const code_typet func_code=
+    const code_typet func_code =
       to_code_type(new_symbol_table.lookup_ref(process_func_name).type);
-    REQUIRE(func_code.parameters().size()==3);
+    REQUIRE(func_code.parameters().size() == 3);
 
     // TODO: for now, the parameters are not generic because we fall back to
     // descriptor due to mismatch; enable tests when fixed - issue TG-1309

From 1fa8e2f52c9b4db149f3e4b44e8f635e5a5cf1af Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Thu, 2 Nov 2017 10:12:21 +0000
Subject: [PATCH 18/22] Adding unit test for generic fields

---
 .../GenericFields.class                       | Bin 0 -> 1120 bytes
 .../GenericFields.java                        |  17 ++
 .../parse_generic_fields.cpp                  | 225 ++++++++++++++++++
 3 files changed, 242 insertions(+)
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericFields.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/GenericFields.java
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/parse_generic_fields.cpp

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericFields.class b/unit/java_bytecode/java_bytecode_parse_generics/GenericFields.class
new file mode 100644
index 0000000000000000000000000000000000000000..cef61ff3cc65ebb472e798781a2ca89d28d1841b
GIT binary patch
literal 1120
zcma)*YflqF7=_Q<0+n*F3gQLuPVs_hRn$!rLxPbsYO))?Z_Bg}DO<B_HU2C=nec%h
z;Eyt%y>xfhu8Ci!^SpEByl1AfzkZ*c18Cq;6=iHy@SuW+0_h5Btz-AAyWMxa-uB1#
zvFZeG1k<+ed2TTDm7wf6tdzP>S#G^kp7M2vh56Ck;(9YuJQJ*?Rm1kZ7pR`{6IDa7
znyC`Q*d(@jE@+GkvPzaWGj1m4F9b^?rSom@$@Se6W=k86YGJ=L_sf3??8J3fQ2*Q2
zDmY;3_^N0FR}1!pXD)Ylo(OjTr-k8Q2fp@tQA8T-2oA;#a@RYy?AXPL!c0?^_H@u>
zxXt>ZU}A4@#K*AE(w_P-JZUT6aoc@XYOO)X?H{_n4ml}K1fTV3s80ItYt=tGrR#ED
z{r$^m$4Xur{Xg;bTbA?MICb(y?Sfi!Tqda6gQ4G1`#K7n%kwyVNwZkPx?nE1B3R5`
zS=<pfQR24)%z(FnNsd#b5-OZsz;w!0&SngrCC?c=PhK#1k-UT&$Jp;8XO|4VOkOs4
zg?z=}Rq|DXuaU1Ce1psn6YCr|nD}kPz~t6X$PX6EJQ~<sI0|lY3?oy3+qlEuySd6e
NQYndgADa=?{{WGv1s?za

literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/GenericFields.java b/unit/java_bytecode/java_bytecode_parse_generics/GenericFields.java
new file mode 100644
index 00000000000..8f7a3b0e1ec
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/GenericFields.java
@@ -0,0 +1,17 @@
+public class GenericFields<T, S> {
+  public T f;
+
+  public Generic<T> f2;
+  public Generic<Integer> f3;
+
+  public Generic<Generic<T>> f4;
+  public Generic<Generic<Generic<Integer>>> f5;
+
+  public GenericTwoParam<T, T> f6;
+  public GenericTwoParam<T, S> f7;
+  public GenericTwoParam<Integer, T> f8;
+  public GenericTwoParam<T, Integer> f9;
+  public GenericTwoParam<Integer, String> f10;
+
+  public GenericTwoParam<Generic<T>, GenericTwoParam<S, Integer>> f11;
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_fields.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_fields.cpp
new file mode 100644
index 00000000000..847d91f801a
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_fields.cpp
@@ -0,0 +1,225 @@
+/*******************************************************************\
+
+ Module: Unit tests for parsing generic classes
+
+ Author: DiffBlue Limited. All rights reserved.
+
+\*******************************************************************/
+
+#include <testing-utils/catch.hpp>
+#include <testing-utils/load_java_class.h>
+#include <testing-utils/require_symbol.h>
+#include <testing-utils/require_type.h>
+
+#include <memory>
+
+#include <util/config.h>
+#include <util/language.h>
+#include <java_bytecode/java_bytecode_language.h>
+
+SCENARIO(
+  "parse_generic_fields",
+  "[core][java_bytecode][java_bytecode_parse_generics]")
+{
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "GenericFields", "./java_bytecode/java_bytecode_parse_generics");
+
+  std::string class_prefix = "java::GenericFields";
+
+  WHEN("Parsing the class with generic fields")
+  {
+    THEN("There is a generic class symbol GenericField")
+    {
+      REQUIRE(new_symbol_table.has_symbol(class_prefix));
+
+      const symbolt &class_symbol = new_symbol_table.lookup_ref(class_prefix);
+      const java_generics_class_typet &java_generics_class_type =
+        require_type::require_java_generic_class(
+          class_symbol.type, {class_prefix + "::T", class_prefix + "::S"});
+
+      const struct_typet class_struct = to_struct_type(class_symbol.type);
+
+      THEN("It has field f of type T")
+      {
+        const struct_union_typet::componentt &field =
+          require_type::require_component(class_struct, "f");
+        require_type::require_java_generic_parameter(
+          field.type(),
+          {require_type::type_parameter_kindt::Var, class_prefix + "::T"});
+      }
+
+      THEN("It has field f2 pointing to Generic")
+      {
+        const struct_typet::componentt &field =
+          require_type::require_component(class_struct, "f2");
+        require_type::require_pointer(
+          field.type(), symbol_typet("java::Generic"));
+        THEN("The pointer should be generic")
+        {
+          require_type::require_java_generic_type(
+            field.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
+        }
+      }
+
+      THEN("It has field f3 pointing to Generic")
+      {
+        const struct_typet::componentt &field =
+          require_type::require_component(class_struct, "f3");
+        require_type::require_pointer(
+          field.type(), symbol_typet("java::Generic"));
+        THEN("The pointer should be generic")
+        {
+          require_type::require_java_generic_type(
+            field.type(),
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java"
+              ".lang.Integer"}});
+        }
+      }
+
+      THEN("It has field f3 pointing to Generic")
+      {
+        const struct_typet::componentt &field =
+          require_type::require_component(class_struct, "f3");
+        require_type::require_pointer(
+          field.type(), symbol_typet("java::Generic"));
+        THEN("The pointer should be generic")
+        {
+          require_type::require_java_generic_type(
+            field.type(),
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java"
+              ".lang.Integer"}});
+        }
+      }
+
+      THEN("It has field f4 pointing to Generic")
+      {
+        const struct_typet::componentt &field =
+          require_type::require_component(class_struct, "f4");
+        require_type::require_pointer(
+          field.type(), symbol_typet("java::Generic"));
+        THEN("The pointer should be generic")
+        {
+          require_type::require_java_generic_type(
+            field.type(),
+            {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+          // TODO extend when nested generics are parsed correctly - TG-1301
+        }
+      }
+
+      THEN("It has field f5 pointing to Generic")
+      {
+        const struct_typet::componentt &field =
+          require_type::require_component(class_struct, "f5");
+        require_type::require_pointer(
+          field.type(), symbol_typet("java::Generic"));
+        THEN("The pointer should be generic")
+        {
+          require_type::require_java_generic_type(
+            field.type(),
+            {{require_type::type_parameter_kindt::Inst, "java::Generic"}});
+          // TODO extend when nested generics are parsed correctly - TG-1301
+        }
+      }
+
+      THEN("It has field f6 pointing to GenericTwoParam")
+      {
+        const struct_typet::componentt &field =
+          require_type::require_component(class_struct, "f6");
+        require_type::require_pointer(
+          field.type(), symbol_typet("java::GenericTwoParam"));
+        THEN("The pointer should be generic")
+        {
+          require_type::require_java_generic_type(
+            field.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+             {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
+        }
+      }
+
+      THEN("It has field f7 pointing to GenericTwoParam")
+      {
+        const struct_typet::componentt &field =
+          require_type::require_component(class_struct, "f7");
+        require_type::require_pointer(
+          field.type(), symbol_typet("java::GenericTwoParam"));
+        THEN("The pointer should be generic")
+        {
+          require_type::require_java_generic_type(
+            field.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+             {require_type::type_parameter_kindt::Var, class_prefix + "::S"}});
+        }
+      }
+
+      THEN("It has field f8 pointing to GenericTwoParam")
+      {
+        const struct_typet::componentt &field =
+          require_type::require_component(class_struct, "f8");
+        require_type::require_pointer(
+          field.type(), symbol_typet("java::GenericTwoParam"));
+        THEN("The pointer should be generic")
+        {
+          require_type::require_java_generic_type(
+            field.type(),
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Integer"},
+             {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
+        }
+      }
+
+      THEN("It has field f9 pointing to GenericTwoParam")
+      {
+        const struct_typet::componentt &field =
+          require_type::require_component(class_struct, "f9");
+        require_type::require_pointer(
+          field.type(), symbol_typet("java::GenericTwoParam"));
+        THEN("The pointer should be generic")
+        {
+          require_type::require_java_generic_type(
+            field.type(),
+            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+             {require_type::type_parameter_kindt::Inst,
+              "java::java.lang"
+              ".Integer"}});
+        }
+      }
+
+      THEN("It has field f10 pointing to GenericTwoParam")
+      {
+        const struct_typet::componentt &field =
+          require_type::require_component(class_struct, "f10");
+        require_type::require_pointer(
+          field.type(), symbol_typet("java::GenericTwoParam"));
+        THEN("The pointer should be generic")
+        {
+          require_type::require_java_generic_type(
+            field.type(),
+            {{require_type::type_parameter_kindt::Inst,
+              "java::java.lang.Integer"},
+             {require_type::type_parameter_kindt::Inst,
+              "java::java.lang.String"}});
+        }
+      }
+
+      THEN("It has field f11 pointing to GenericTwoParam")
+      {
+        const struct_typet::componentt &field =
+          require_type::require_component(class_struct, "f11");
+        require_type::require_pointer(
+          field.type(), symbol_typet("java::GenericTwoParam"));
+        THEN("The pointer should be generic")
+        {
+          require_type::require_java_generic_type(
+            field.type(),
+            {{require_type::type_parameter_kindt::Inst, "java::Generic"},
+             {require_type::type_parameter_kindt::Inst,
+              "java::GenericTwoParam"}});
+          // TODO extend when nested generics are parsed correctly - TG-1301
+        }
+      }
+    }
+  }
+}

From f5ec45aab38f4960377fad4e5a4a2acb30c613c1 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Fri, 3 Nov 2017 14:36:13 +0000
Subject: [PATCH 19/22] Adding JIRA tickets cont.

---
 .../parse_bounded_generic_inner_classes.cpp              | 6 +++---
 .../parse_generic_functions.cpp                          | 2 --
 .../parse_generic_wildcard_function.cpp                  | 9 ++++-----
 3 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
index a4f724d07e1..c50a16b7e71 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
@@ -64,7 +64,7 @@ SCENARIO(
         require_type::require_java_generic_class(
           class_symbol.type, {boundedinner_name + "::NUM"});
 
-      //TODO extend when bounds are parsed correctly - TG-1286
+      // TODO extend when bounds are parsed correctly - TG-1286
 
       THEN("The fields are of correct types")
       {
@@ -103,7 +103,7 @@ SCENARIO(
         require_type::require_java_generic_class(
           class_symbol.type, {doubleboundedinner_name + "::T"});
 
-      //TODO extend when bounds are parsed correctly - TG-1286
+      // TODO extend when bounds are parsed correctly - TG-1286
 
       THEN("The fields are of correct types")
       {
@@ -133,7 +133,7 @@ SCENARIO(
           class_symbol.type,
           {twoelementinner_name + "::K", twoelementinner_name + "::V"});
 
-      //TODO extend when bounds are parsed correctly - TG-1286
+      // TODO extend when bounds are parsed correctly - TG-1286
 
       THEN("The fields are of correct types")
       {
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
index cbe8b51f88b..e4818e7639a 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_functions.cpp
@@ -348,8 +348,6 @@ SCENARIO(
         new_symbol_table.lookup_ref(process_func_name);
       const code_typet func_code =
         require_type::require_code(func_symbol.type, 0);
-      // TODO: should point to something else than Object?? - possibly
-      // connected to bounds - issue TG-1286
       THEN("It has return type pointing to java.lang.Object")
       {
         require_type::require_pointer(
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
index 6dba3792baf..bf4c0a66578 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_wildcard_function.cpp
@@ -9,11 +9,6 @@
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
 
-#include <util/config.h>
-#include <util/language.h>
-
-#include <java_bytecode/java_bytecode_language.h>
-
 SCENARIO(
   "parse_generic_wildcard",
   "[core][java_bytecode][java_bytecode_parse_generics]")
@@ -31,6 +26,7 @@ SCENARIO(
       class_prefix + func_name + func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    // TODO extend tests when wildcards are parsed correctly - TG-675
   }
 
   THEN("There should be a symbol for processUpperBoundInterfaceGeneric")
@@ -41,6 +37,7 @@ SCENARIO(
       class_prefix + func_name + func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    // TODO extend tests when wildcards are parsed correctly - TG-675
   }
 
   THEN("There should be a symbol for processUpperBoundClassGeneric")
@@ -51,6 +48,7 @@ SCENARIO(
       class_prefix + func_name + func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    // TODO extend tests when wildcards are parsed correctly - TG-675
   }
 
   THEN("There should be a symbol for processLowerBoundGeneric")
@@ -62,5 +60,6 @@ SCENARIO(
       class_prefix + func_name + func_descriptor;
 
     REQUIRE(new_symbol_table.has_symbol(process_func_name));
+    // TODO extend tests when wildcards are parsed correctly - TG-675
   }
 }

From e3019f22ab6e56f461761dd5047d4569284f8034 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Fri, 3 Nov 2017 12:03:05 +0000
Subject: [PATCH 20/22] Extending test for derived generics

---
 .../DerivedGeneric.class                      | Bin 318 -> 0 bytes
 .../DerivedGeneric.java                       |   4 --
 .../DerivedGenericInst.class                  | Bin 0 -> 330 bytes
 .../DerivedGenericInst.java                   |   4 ++
 .../DerivedGenericUninst.class                | Bin 0 -> 408 bytes
 .../DerivedGenericUninst.java                 |   4 ++
 .../parse_derived_generic_class.cpp           |  41 +++++++++++++-----
 7 files changed, 37 insertions(+), 16 deletions(-)
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.class
 delete mode 100644 unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.java
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericInst.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericInst.java
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericUninst.class
 create mode 100644 unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericUninst.java

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.class b/unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.class
deleted file mode 100644
index ff3766d716e4179c02e20d6a3ac732c150fe59f2..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 318
zcmY+9O-{ow5QX2gX+qP`KQ6!q3A&&gcCESrfht*Sin>K^I)G8)RL1GOSRt|C02~T2
zNwcY?nfLt7kLBOL?;ij+7{_R15MdZ$L<r}`8owa4FR#{w;I`N@VW5oV$1>lrd(xXs
z$XFGr&eqzQ>fXS>znKrhP~EXJd)_{<6_d^g-IaN@+Lum7FI2<lYH2;Y7oGC+GT&vK
zv-R4W!p;^l6R(QWrF?Iy_s))2Ucc+TP7t6&=pUB|QL`WCXvyEILlV*~8j72WR-`le
d0)2{UA(9-{kZ>YCIW(Y)xUTo=oZz(9{y!FdMHc`7

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.java b/unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.java
deleted file mode 100644
index 8200e5de72e..00000000000
--- a/unit/java_bytecode/java_bytecode_parse_generics/DerivedGeneric.java
+++ /dev/null
@@ -1,4 +0,0 @@
-class DerivedGeneric extends Generic<Interface_Implementation>
-{
-
-}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericInst.class b/unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericInst.class
new file mode 100644
index 0000000000000000000000000000000000000000..f5a72b7d0a53047cca6ec461c1a51b33562ba53a
GIT binary patch
literal 330
zcmZWku};G<6uj4_2@QclRf&}a2^e5uYt^L{D3Zle)D^ku1B?;}xlaF!38@1gz(*lo
zLbh7+yYt;UKl|r*_YL3<!x&u*BAi4xC4>`Wjh_;_msd+dFe}$g7${@;u_{*Vp7bgg
zWvI$b=S%HOeQw3TznKkTq~`3*me&t#g=DGS_%WfsFt1ko%1Qh}wcbRf*0X!j89%4R
zN6rOXue~Ylcq*BAQC2SFdsELm+rReaU2k=Q06lrqzD<bQIXFj0{#h@QEdjw$*sWl#
g^sc`^pF%o_q=t=1I1rxvH=vKW@eiAt;HbglKUpkE{Qv*}

literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericInst.java b/unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericInst.java
new file mode 100644
index 00000000000..b2a41911694
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericInst.java
@@ -0,0 +1,4 @@
+class DerivedGenericInst extends Generic<Interface_Implementation>
+{
+
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericUninst.class b/unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericUninst.class
new file mode 100644
index 0000000000000000000000000000000000000000..437daa77f9ca9ff80d8734bf6712ab22a4fe0e74
GIT binary patch
literal 408
zcmZutu};G<5PfdagoZ$&R7i-0fdLrk!bGA-2n0(6Lqm5bwTi3YAUCPRXE9akzz6VA
zh;vAXO0nd7@1F17o&58={swS^p$7|xE(R`+7@SZlSw;-j#pQ&-zAvVNp&v^no~!p%
z=!B;^DTBDkcs}7;n!FM1@=Y!nj^hWR<x)(agd&o?DybG_U>>$ipC23JX{#elk{}{m
zZ!BkumzAcu=V5Xi&-s#%a;|2hmvk<&GKk`4)W+hCi%MtWQJP&(+Sa)?O?=qsG7Q@a
z7~G~Q&d{MhGKbM63!y{oj?gIGs}<N65eqIwrxqD@i2MHq=)t3GcT4dp>tL^r`{>tr
F@CQXSUEu%#

literal 0
HcmV?d00001

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericUninst.java b/unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericUninst.java
new file mode 100644
index 00000000000..88dcb1c9250
--- /dev/null
+++ b/unit/java_bytecode/java_bytecode_parse_generics/DerivedGenericUninst.java
@@ -0,0 +1,4 @@
+class DerivedGenericUninst<T> extends Generic<T>
+{
+
+}
diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
index 106f1e230f1..2c4b698879d 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_derived_generic_class.cpp
@@ -8,30 +8,47 @@
 
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
-
-#include <util/config.h>
-#include <util/language.h>
-#include <java_bytecode/java_bytecode_language.h>
-#include <iostream>
+#include <testing-utils/require_type.h>
 
 SCENARIO(
-  "parse_derived_generic_class",
+  "parse_derived_generic_class_inst",
   "[core][java_bytecode][java_bytecode_parse_generics]")
 {
   const symbol_tablet &new_symbol_table = load_java_class(
-    "DerivedGeneric", "./java_bytecode/java_bytecode_parse_generics");
+    "DerivedGenericInst", "./java_bytecode/java_bytecode_parse_generics");
 
-  THEN("There should be a symbol for the DerivedGeneric class")
+  THEN("There should be a symbol for the DerivedGenericInst class")
   {
-    std::string class_prefix = "java::DerivedGeneric";
+    std::string class_prefix = "java::DerivedGenericInst";
     REQUIRE(new_symbol_table.has_symbol(class_prefix));
 
     const symbolt &derived_symbol = new_symbol_table.lookup_ref(class_prefix);
-    derived_symbol.show(std::cout);
     const class_typet &derived_class_type =
-      require_symbol::require_complete_class(derived_symbol);
+      require_type::require_java_non_generic_class(derived_symbol.type);
+
+    // TODO: Currently we do not support extracting information
+    // about the base classes generic information - issue TG-1287
+  }
+}
+
+SCENARIO(
+  "parse_derived_generic_class_uninst",
+  "[core][java_bytecode][java_bytecode_parse_generics]")
+{
+  const symbol_tablet &new_symbol_table = load_java_class(
+    "DerivedGenericUninst", "./java_bytecode/java_bytecode_parse_generics");
+
+  THEN("There should be a symbol for the DerivedGenericUninst class")
+  {
+    std::string class_prefix = "java::DerivedGenericUninst";
+    REQUIRE(new_symbol_table.has_symbol(class_prefix));
+
+    const symbolt &derived_symbol = new_symbol_table.lookup_ref(class_prefix);
+    const java_generics_class_typet &derived_class_type =
+      require_type::require_java_generic_class(
+        derived_symbol.type, {class_prefix + "::T"});
 
-    // TODO(tkiley): Currently we do not support extracting information
+    // TODO: Currently we do not support extracting information
     // about the base classes generic information - issue TG-1287
   }
 }

From 03438bb7bf125ae93e19c276d3a2a94091d5e448 Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Fri, 3 Nov 2017 12:03:32 +0000
Subject: [PATCH 21/22] Disabling part of unit test due to a bug

---
 .../parse_bounded_generic_inner_classes.cpp           | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
index c50a16b7e71..8e0111869c9 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_bounded_generic_inner_classes.cpp
@@ -10,10 +10,6 @@
 #include <testing-utils/load_java_class.h>
 #include <testing-utils/require_type.h>
 
-#include <util/config.h>
-#include <util/language.h>
-#include <java_bytecode/java_bytecode_language.h>
-
 SCENARIO(
   "parse_bounded_generic_inner_classes",
   "[core][java_bytecode][java_bytecode_parse_generics]")
@@ -99,9 +95,10 @@ SCENARIO(
     {
       const symbolt &class_symbol =
         new_symbol_table.lookup_ref(doubleboundedinner_name);
-      const java_generics_class_typet &java_generics_class_type =
-        require_type::require_java_generic_class(
-          class_symbol.type, {doubleboundedinner_name + "::T"});
+      // TODO the symbol should be generic - TG-1349
+      //      const java_generics_class_typet &java_generics_class_type =
+      //        require_type::require_java_generic_class(
+      //          class_symbol.type, {doubleboundedinner_name + "::T"});
 
       // TODO extend when bounds are parsed correctly - TG-1286
 

From 51cbfc93ee67c4615787615f7e6ac1c76144969e Mon Sep 17 00:00:00 2001
From: svorenova <maria.svorenova@diffblue.com>
Date: Fri, 3 Nov 2017 14:30:21 +0000
Subject: [PATCH 22/22] Deleting a utility function for generics

There is a new one in require_type with the same functionality
---
 .../parse_generic_fields.cpp                  | 29 +++++++------------
 unit/testing-utils/Makefile                   |  1 -
 unit/testing-utils/require_symbol.cpp         | 29 -------------------
 unit/testing-utils/require_symbol.h           | 25 ----------------
 4 files changed, 11 insertions(+), 73 deletions(-)
 delete mode 100644 unit/testing-utils/require_symbol.cpp
 delete mode 100644 unit/testing-utils/require_symbol.h

diff --git a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_fields.cpp b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_fields.cpp
index 847d91f801a..d1108be3952 100644
--- a/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_fields.cpp
+++ b/unit/java_bytecode/java_bytecode_parse_generics/parse_generic_fields.cpp
@@ -8,15 +8,8 @@
 
 #include <testing-utils/catch.hpp>
 #include <testing-utils/load_java_class.h>
-#include <testing-utils/require_symbol.h>
 #include <testing-utils/require_type.h>
 
-#include <memory>
-
-#include <util/config.h>
-#include <util/language.h>
-#include <java_bytecode/java_bytecode_language.h>
-
 SCENARIO(
   "parse_generic_fields",
   "[core][java_bytecode][java_bytecode_parse_generics]")
@@ -73,8 +66,7 @@ SCENARIO(
           require_type::require_java_generic_type(
             field.type(),
             {{require_type::type_parameter_kindt::Inst,
-              "java::java"
-              ".lang.Integer"}});
+              "java::java.lang.Integer"}});
         }
       }
 
@@ -89,8 +81,7 @@ SCENARIO(
           require_type::require_java_generic_type(
             field.type(),
             {{require_type::type_parameter_kindt::Inst,
-              "java::java"
-              ".lang.Integer"}});
+              "java::java.lang.Integer"}});
         }
       }
 
@@ -165,8 +156,9 @@ SCENARIO(
           require_type::require_java_generic_type(
             field.type(),
             {{require_type::type_parameter_kindt::Inst,
-              "java::java.lang.Integer"},
-             {require_type::type_parameter_kindt::Var, class_prefix + "::T"}});
+               "java::java.lang.Integer"},
+             {require_type::type_parameter_kindt::Var,
+               class_prefix + "::T"}});
         }
       }
 
@@ -180,10 +172,10 @@ SCENARIO(
         {
           require_type::require_java_generic_type(
             field.type(),
-            {{require_type::type_parameter_kindt::Var, class_prefix + "::T"},
+            {{require_type::type_parameter_kindt::Var,
+               class_prefix + "::T"},
              {require_type::type_parameter_kindt::Inst,
-              "java::java.lang"
-              ".Integer"}});
+              "java::java.lang.Integer"}});
         }
       }
 
@@ -214,9 +206,10 @@ SCENARIO(
         {
           require_type::require_java_generic_type(
             field.type(),
-            {{require_type::type_parameter_kindt::Inst, "java::Generic"},
+            {{require_type::type_parameter_kindt::Inst,
+               "java::Generic"},
              {require_type::type_parameter_kindt::Inst,
-              "java::GenericTwoParam"}});
+               "java::GenericTwoParam"}});
           // TODO extend when nested generics are parsed correctly - TG-1301
         }
       }
diff --git a/unit/testing-utils/Makefile b/unit/testing-utils/Makefile
index f211e7eb832..45ccd69ec7b 100644
--- a/unit/testing-utils/Makefile
+++ b/unit/testing-utils/Makefile
@@ -3,7 +3,6 @@ SRC = \
   load_java_class.cpp \
   require_expr.cpp \
   require_goto_statements.cpp \
-  require_symbol.cpp \
   require_type.cpp \
   # Empty last line (please keep above list sorted!)
 
diff --git a/unit/testing-utils/require_symbol.cpp b/unit/testing-utils/require_symbol.cpp
deleted file mode 100644
index e291017c5cc..00000000000
--- a/unit/testing-utils/require_symbol.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-/*******************************************************************\
-
- Module: Unit test utilities
-
- Author: DiffBlue Limited. All rights reserved.
-
-\*******************************************************************/
-
-/// \file
-/// Helper functions for requiring properties of symbols
-
-#include "require_symbol.h"
-
-#include <testing-utils/catch.hpp>
-
-const class_typet &require_symbol::require_complete_class(
-  const symbolt &class_symbol)
-{
-  REQUIRE(class_symbol.is_type);
-
-  const typet &class_symbol_type=class_symbol.type;
-  REQUIRE(class_symbol_type.id()==ID_struct);
-
-  const class_typet &class_class_type=to_class_type(class_symbol_type);
-  REQUIRE(class_class_type.is_class());
-  REQUIRE_FALSE(class_class_type.get_bool(ID_incomplete_class));
-
-  return class_class_type;
-}
diff --git a/unit/testing-utils/require_symbol.h b/unit/testing-utils/require_symbol.h
deleted file mode 100644
index c8d1e636e65..00000000000
--- a/unit/testing-utils/require_symbol.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*******************************************************************\
-
- Module: Unit test utilities
-
- Author: DiffBlue Limited. All rights reserved.
-
-\*******************************************************************/
-
-/// \file
-/// Helper functions for requiring properties of symbols
-
-#include <util/symbol.h>
-#include <util/std_types.h>
-
-#ifndef CPROVER_TESTING_UTILS_REQUIRE_SYMBOL_H
-#define CPROVER_TESTING_UTILS_REQUIRE_SYMBOL_H
-
-// NOLINTNEXTLINE(readability/namespace)
-namespace require_symbol
-{
-  const class_typet &require_complete_class(
-    const symbolt &class_symbol);
-}
-
-#endif // CPROVER_TESTING_UTILS_REQUIRE_SYMBOL_H