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Unicode for format_expr #2751

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Merged
merged 3 commits into from
Aug 28, 2018
Merged

Unicode for format_expr #2751

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963b866
format_expr now produces unicode
kroening Aug 15, 2018
f2fa169
draw Gentzen turnstile using Unicode
kroening Aug 28, 2018
86aea9b
use status() to output VCCs
kroening Aug 28, 2018
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31 changes: 28 additions & 3 deletions src/util/format_expr.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -62,6 +62,27 @@ static std::ostream &format_rec(std::ostream &os, const multi_ary_exprt &src)
{
bool first = true;

std::string operator_str;

if(src.id() == ID_and)
operator_str = u8"\u2227"; // wedge, U+2227
else if(src.id() == ID_or)
operator_str = u8"\u2228"; // vee, U+2228
else if(src.id() == ID_xor)
operator_str = u8"\u2295"; // + in circle, U+2295
else if(src.id() == ID_le)
operator_str = u8"\u2264"; // <=, U+2264
else if(src.id() == ID_ge)
operator_str = u8"\u2265"; // >=, U+2265
else if(src.id() == ID_notequal)
operator_str = u8"\u2260"; // /=, U+2260
else if(src.id() == ID_implies)
operator_str = u8"\u21d2"; // =>, U+21D2
else if(src.id() == ID_iff)
operator_str = u8"\u21d4"; // <=>, U+21D4
else
operator_str = id2string(src.id());

for(const auto &op : src.operands())
{
if(first)
Expand Down Expand Up @@ -95,7 +116,7 @@ static std::ostream &format_rec(std::ostream &os, const binary_exprt &src)
static std::ostream &format_rec(std::ostream &os, const unary_exprt &src)
{
if(src.id() == ID_not)
os << '!';
os << u8"\u00ac"; // neg, U+00AC
else if(src.id() == ID_unary_minus)
os << '-';
else
Expand Down Expand Up @@ -197,8 +218,12 @@ std::ostream &format_rec(std::ostream &os, const exprt &expr)
}
else if(id == ID_type)
return format_rec(os, expr.type());
else if(id == ID_forall || id == ID_exists)
return os << id << ' ' << format(to_quantifier_expr(expr).symbol()) << " : "
else if(id == ID_forall)
return os << id << u8" \u2200 : "
<< format(to_quantifier_expr(expr).symbol().type()) << " . "
<< format(to_quantifier_expr(expr).where());
else if(id == ID_exists)
return os << id << u8" \u2203 : "
<< format(to_quantifier_expr(expr).symbol().type()) << " . "
<< format(to_quantifier_expr(expr).where());
else if(id == ID_let)
Expand Down