[cfe-dev] visiting complex<> declarations

[John McCall]

On Feb 20, 2013, at 12:38 PM, suppamax <max.giacometti at gmail.com> wrote:
> I am trying to get familiar with clang's AST.
> 
> I want to parse some code that includes statements like
> 
> complex<double> c1(1.1, 3.6);
> complex<double> c2(34.3, 8.7);
> complex<double> c3;
> c3 = c1 + c2;
> 
> In my ASTVisitor class I have
> 
> bool VisitVarDecl(VarDecl *v) {
>  ...
>  return true;
> }
> 
> bool VisitBinaryOperator(BinaryOperator* bo) {
>  ...
>  return true;
> }
> 
> These visiting functions work for floating point variables and arrays, but
> they're not used when complex data are met.
> 
> Can you please help me clarifying?

The VarDecl visitor should certainly work.  The BinaryOperator visitor
won't work because std::complex<T> is not a builtin type and its operators
are not builtin operators;  you'll need to visit CXXOperatorCallExprs.

If this were the C99 _Complex T type, you'd still see BinaryOperator
expressions.

John.