[cfe-dev] Traversing a function body for call expressions. How ?

[Gabor Kozar]

This looks good to me, I'm not sure what could be the issue. Try
implementing FunctionBodyVisitor::VisitStmt() where you just the Stmt
visited to see where the traversal stops.

As a side-note, in DummyVisitor::VisitFunctionDecl, you should probably
call the parent's VisitFunctionDecl at the end (although I seriously
doubt this would make any difference here).

---
Best regards,

Gábor 'ShdNx' Kozár http://gaborkozar.me



On Fri, Dec 12, 2014, at 10:39, Manasij Mukherjee wrote:
> Hi, Here is my code, sorry for the delay.
>
> class FunctionBodyVisitor : public
> clang::StmtVisitor<FunctionBodyVisitor> { public: void
> VisitCallExpr(clang::CallExpr* Expr) { llvm::outs() <<
> Expr->getCalleeDecl()->getAsFunction()->getName() << "\n"; //this is
> never called } };
>
> class DummyVisitor : public clang::RecursiveASTVisitor<DummyVisitor> {
> public: bool VisitFunctionDecl(clang::FunctionDecl* Decl) {
> llvm::outs() << Decl->getName() << "\n"; // this part visibly works
> stmtVisitor.Visit(Decl->getBody()); return true; } private:
> FunctionBodyVisitor stmtVisitor; };
>
> The code on which this is called is: void foo() {
>
> } int main() { foo(); // I want to get to this call expression }
>
> Manasij
>
>
> On Sat, Dec 6, 2014 at 8:18 AM, Gabor Kozar
> <kozargabor at gmail.com> wrote:
>> Hi,
>>
>> It should work. Define an StmtVisitor subclass, provide a
>> VisitCallExpr. Then in your Visitor::VisitFunctionDecl, construct
>> an StmtVisitor object, then call its Visit method with the
>> function's body.
>>
>> In the future, please also provide source code, to allow us to spot
>> any bugs and problems in your code (e.g. you may believe that the
>> code does what you say it does, but you might have a bug, etc.).
>>
>> ---
>> Best regards,
>>
>> Gábor 'ShdNx' Kozár http://gaborkozar.me
>>
>>
>>
>> On Wed, Dec 3, 2014, at 07:11, Manasij Mukherjee wrote:
>>
>> Hi, In a RecursiveASTVisitor implementation, I implement
>> VisitFunctionDecl. Now, from the FunctionDecl I have, I can call
>> getBody and get a Stmt.
>>
>> How can I visit all the functions this function calls ? I have tried
>> creating a StmtVisitor and ..err..defining VisitCallExpr ! That
>> didn't work.
>>
>> Can anyone point me to what I should be doing ?
>>
>> Manasij Mukherjee
>> _________________________________________________
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>>
>>
>>
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