[PATCH] [extra] pptrace - preprocessor tracing and testing tool

[John Thompson]

Hi silvas, kimgr,

pp-trace is a tool for displaying preprocessor activity by means of the PPCallbacks interface.  Its primary reason for existence is for testing the PPCallbacks mechanism, but it also might be useful as a tool for understanding preprocessor activity (as an alternative to clang's -P option for looking at preprocessor output).

This is a first cut, for proof of concept, with only two tests for demonstration purposes.

It supports two output formats, YAML and a generic format.  Originally I just put in the YAML, but I felt it was kind of verbose, so I added the generic format as a default.

Please see the file comments for details.

Documentation and more tests will follow in a later checkin.


http://llvm-reviews.chandlerc.com/D2020

Files:
  test/pp-trace/pp-trace-macro.cpp
  test/pp-trace/pp-trace-macro-yaml.cpp
  pp-trace/PPTrace.cpp
  pp-trace/PPCallbacksTracker.h
  pp-trace/PPTraceGeneric.h
  pp-trace/PPTraceYAML.cpp
  pp-trace/PPTraceYAML.h
  pp-trace/PPCallbacksTracker.cpp
  pp-trace/PPTraceGeneric.cpp
  pp-trace/CMakeLists.txt
  pp-trace/Makefile
  CMakeLists.txt
  Makefile
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