src: add KeyObjectHandle::HasInstance

In preparation for use by the QUIC implementation.

Author: jasnell

src/crypto/crypto_keys.cc

@@ -893,33 +893,36 @@ size_t KeyObjectData::GetSymmetricKeySize() const {
   return symmetric_key_.size();
 }
 
+bool KeyObjectHandle::HasInstance(Environment* env, Local<Value> value) {
+  Local<FunctionTemplate> t = env->crypto_key_object_handle_constructor();
+  return !t.IsEmpty() && t->HasInstance(value);
+}
+
 v8::Local<v8::Function> KeyObjectHandle::Initialize(Environment* env) {
-  Local<Function> templ = env->crypto_key_object_handle_constructor();
-  if (!templ.IsEmpty()) {
-    return templ;
+  Local<FunctionTemplate> templ = env->crypto_key_object_handle_constructor();
+  if (templ.IsEmpty()) {
+    Isolate* isolate = env->isolate();
+    templ = NewFunctionTemplate(isolate, New);
+    templ->InstanceTemplate()->SetInternalFieldCount(
+        KeyObjectHandle::kInternalFieldCount);
+    templ->Inherit(BaseObject::GetConstructorTemplate(env));
+
+    SetProtoMethod(isolate, templ, "init", Init);
+    SetProtoMethodNoSideEffect(
+        isolate, templ, "getSymmetricKeySize", GetSymmetricKeySize);
+    SetProtoMethodNoSideEffect(
+        isolate, templ, "getAsymmetricKeyType", GetAsymmetricKeyType);
+    SetProtoMethod(isolate, templ, "export", Export);
+    SetProtoMethod(isolate, templ, "exportJwk", ExportJWK);
+    SetProtoMethod(isolate, templ, "initECRaw", InitECRaw);
+    SetProtoMethod(isolate, templ, "initEDRaw", InitEDRaw);
+    SetProtoMethod(isolate, templ, "initJwk", InitJWK);
+    SetProtoMethod(isolate, templ, "keyDetail", GetKeyDetail);
+    SetProtoMethod(isolate, templ, "equals", Equals);
+
+    env->set_crypto_key_object_handle_constructor(templ);
   }
-  Isolate* isolate = env->isolate();
-  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
-  t->InstanceTemplate()->SetInternalFieldCount(
-      KeyObjectHandle::kInternalFieldCount);
-  t->Inherit(BaseObject::GetConstructorTemplate(env));
-
-  SetProtoMethod(isolate, t, "init", Init);
-  SetProtoMethodNoSideEffect(
-      isolate, t, "getSymmetricKeySize", GetSymmetricKeySize);
-  SetProtoMethodNoSideEffect(
-      isolate, t, "getAsymmetricKeyType", GetAsymmetricKeyType);
-  SetProtoMethod(isolate, t, "export", Export);
-  SetProtoMethod(isolate, t, "exportJwk", ExportJWK);
-  SetProtoMethod(isolate, t, "initECRaw", InitECRaw);
-  SetProtoMethod(isolate, t, "initEDRaw", InitEDRaw);
-  SetProtoMethod(isolate, t, "initJwk", InitJWK);
-  SetProtoMethod(isolate, t, "keyDetail", GetKeyDetail);
-  SetProtoMethod(isolate, t, "equals", Equals);
-
-  auto function = t->GetFunction(env->context()).ToLocalChecked();
-  env->set_crypto_key_object_handle_constructor(function);
-  return function;
+  return templ->GetFunction(env->context()).ToLocalChecked();
 }
 
 void KeyObjectHandle::RegisterExternalReferences(

src/crypto/crypto_keys.h

@@ -163,6 +163,7 @@ class KeyObjectData : public MemoryRetainer {
 
 class KeyObjectHandle : public BaseObject {
  public:
+  static bool HasInstance(Environment* env, v8::Local<v8::Value> value);
   static v8::Local<v8::Function> Initialize(Environment* env);
   static void RegisterExternalReferences(ExternalReferenceRegistry* registry);
 

src/env_properties.h

@@ -332,6 +332,7 @@
   V(contextify_global_template, v8::ObjectTemplate)                            \
   V(contextify_wrapper_template, v8::ObjectTemplate)                           \
   V(compiled_fn_entry_template, v8::ObjectTemplate)                            \
+  V(crypto_key_object_handle_constructor, v8::FunctionTemplate)                \
   V(env_proxy_template, v8::ObjectTemplate)                                    \
   V(env_proxy_ctor_template, v8::FunctionTemplate)                             \
   V(dir_instance_template, v8::ObjectTemplate)                                 \
@@ -374,7 +375,6 @@
   V(async_hooks_promise_resolve_function, v8::Function)                        \
   V(buffer_prototype_object, v8::Object)                                       \
   V(crypto_key_object_constructor, v8::Function)                               \
-  V(crypto_key_object_handle_constructor, v8::Function)                        \
   V(crypto_key_object_private_constructor, v8::Function)                       \
   V(crypto_key_object_public_constructor, v8::Function)                        \
   V(crypto_key_object_secret_constructor, v8::Function)                        \