[cfe-dev] getting all function calls?

[Adrien Chauve]

Hi,

I'm a clang newbie but I'm also trying to write a plugin (see
http://github.com/achauve/cppanalyze) and I'm using the following
skeleton to get a hand on all declarations and statements:


class MyConsumer : public ASTConsumer, public RecursiveASTVisitor<MyConsumer>
{
    //===--------------------------------------------------------------------===//
    // ASTConsumer virtual interface
    //===--------------------------------------------------------------------===//
    virtual void HandleTranslationUnit(ASTContext &context)
    {
        // traverse AST to visit declarations and statements
        TranslationUnitDecl* tu_decl = context.getTranslationUnitDecl();
        TraverseDecl(tu_decl);
    }

    //===--------------------------------------------------------------------===//
    // RecursiveASTVisitor implicit interface
    //===--------------------------------------------------------------------===//
    /// Visit call statements
    bool VisitCallExpr(CallExpr *node)
    {
        if (node->getDirectCallee())
        {
            FunctionDecl *func_decl = node->getDirectCallee();
            // ... do whatever you want with the function declarations
of the functions that were called
        }
        return true;
    }
};

I'm not sure this is the best solution but as far as I tested it it works fine.

Adrien



On Wed, Jun 8, 2011 at 19:11, ret val <retval386 at gmail.com> wrote:
>
> I would like to write plugin that prints out all the functions that are called and what function they are being called from, later on I would like to know if a function pointer was called. I'm wondering what the best approach would be.
>
> I think I should use a ASTConsumer and implement the HandleTranslationUnit method. From there I would have a ASTContext and I'm not entirely sure where I could find the function calls.
>
> Thanks
>
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