[cfe-dev] Easy way to find out if the SourceLoc is in main file

[Ramneek Handa]

Hi Guys, 
  I know there is a function to find out if SourceLoc is in system headers and also if it is before some other SourceLoc. 

My Question is there anyway to tell if it is in the main file that we are parsing (typically a cpp but could be a header)? 

Regards,
Ramneek

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