[cfe-dev] interface name SourceLocation?

[Chris Lattner]

On Apr 11, 2008, at 10:29 AM, Emerson Murphy-Hill wrote:

> Thanks Steve, this worked.  Although I had to use a slightly  
> different endBuf, because the Lexer was complaining:
>
> const char *endBuf = SM->getBufferData(LocStart.getFileID()).second;
>
Be careful with this, this will explode violently if LocStart is a  
macro instantiation.  Before calling "getFileID()" generally you want  
to call "isMacroID()".  If you have a macro ID, you need to decide how  
your refactoring will handle it.  It seems pretty reasonable to just  
throw up your hands and say "can't do it", but you don't want to  
abort :)

An example would be something like:

#define X @interface foo

X : bar { ...

-Chris
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