[cfe-dev] libclang - how to find an implementation using CXCursor

[Eran Ifrah]

Hi List,

I have implemented the functionality of 'Goto Declaration' using the
following pseudo code:

First, we obtain the cursor using 'location' and TU:

------------
CXTranslationUnit tu = cache.GetTU()
CXCursor c = clang_getCursor(tu, location)

if(clang_isInvalid(c.kind)))
    return

if(is_reference_cursor(c))
    c = clang_getCursorReferenced(c);

 clang_getCursorLocation(c)
------------

This works like a charm, however, with my old code completion engine (an
in-house flex/yacc grammar) I was able to distinguish between the
'declaration' and the 'implementation' of a function and offer it to the
user.

For example:

a.h
------
class A {
void foo(); // declaration
};

a.cpp
--------
// Implementation
void A::foo() {}

I was not able to implement this functionality using libclang
It seems that the cursor is always pointing to the 'Declaration' of a
function
Is there something that I am missing that will give me the location of the
implementation?

Any advise?

-- 
Eran Ifrah
Author of the cross platform, open source C++ IDE: http://www.codelite.org
YTubePlayer http://www.ytubeplayer.com
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