[cfe-dev] How to get the type clang::Expr evaluates to?

[Aaron Ballman via cfe-dev]

On Wed, Aug 26, 2015 at 4:56 PM, Alexander Droste via cfe-dev
<cfe-dev at lists.llvm.org> wrote:
> Hi everyone,
>
> is it possible to get the type of a clang::Expr instance
> the expression evaluates to?

You should be able to use clang::Expr::getType().

~Aaron

> I would like to use this, to find out
> what kind of types arguments passed to a clang::CallExpr have.
>
> Sth. like this:
>
> int n;
> function(&n);
> ..
> // getArg() returns Expr
> callExpr()->getArg(idx)--->getTypeExprEvaluatesTo(); // -> *int
>
> or with multiple operands:
> int n;
> function(1 + n);
> ..
> callExpr()->getArg(idx)--->getTypeExprEvaluatesTo(); // -> int
>
> -Alex
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