[cfe-dev] How to detect all return statements by Clang Libtooling?

[M. J. Cho]

Wow!

 

Thanks Klimek! It works. (Your insight is definitely correct.)

 

Can I ask an another question?

 

When I set all includes paths completely, all return statements could be detected. 

 

However, so many functions are detected due to included header files.

 

If I want to detect only functions in a target source file, what should I do?

 

Thanks

 

From: Manuel Klimek [mailto:klimek at google.com] 
Sent: Friday, February 07, 2014 12:17 AM
To: 조명진
Cc: clang-dev Developers
Subject: Re: [cfe-dev] How to detect all return statements by Clang Libtooling?

 

On Thu, Feb 6, 2014 at 8:49 AM, 조명진 <happybrown at naver.com <mailto:happybrown at naver.com> > wrote:

Hi all,

 

I’m trying to use clang libtooling for detecting all return statements.

 

I used the “VisitReturnStmt” function but sometimes it is not working as follow case.

 

//target code

class ExampleFrontendAction : public ASTFrontendAction {

public:

    virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI, StringRef file) {

        return new ExampleASTConsumer(&CI); // pass CI pointer to ASTConsumer

    }

};

//target code end

 

//results

CXXMethodDecl 0x2468cb0 </project/llvm/Debug+Asserts/bin/a.cpp:107:5, line:115:5> CreateASTConsumer 'int *(int &, int)'

|-ParmVarDecl 0x2468b60 <line:107:44, col:62> CI 'int &' invalid

|-ParmVarDecl 0x2468bd0 <col:66, col:76> file 'int' invalid

`-CompoundStmt 0x2469138 <col:82, line:115:5> invalid

 

As you can see, we cannot find any ReturnStmt. (It is included in CompoundStmt. Also the CompoundStmt is a leaf statement.)

 

How can I detect this case? Please help me! 

 

Thanks in advance.

 

Additional Question.

Why does clang return “int *” instead of “ASTConsumer *” in the case of CreateASTConsumer method when I use getReturnType() in VisitFunctionDecl()?

 

My guess is that the headers are not correctly found; are you sure you're using a compilation database that works?

 

 

Any ideas?

 

Brown.


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