[PATCH] D57472: [AST] Extract ASTDumpTraverser class from ASTDumper

[Stephen Kelly via Phabricator via cfe-commits]

steveire created this revision.
steveire added a reviewer: aaron.ballman.
Herald added subscribers: cfe-commits, jfb.

This new traverser class allows clients to re-use the traversal logic
which was previously part of ASTDumper.  This means that alternative
visit logic may be implemented, such as

- Dump to alternative data formats such as JSON
- Implement AST Matcher parent/child visitation matching AST dumps


Repository:
  rC Clang

https://reviews.llvm.org/D57472

Files:
  include/clang/AST/ASTDumpTraverser.h
  lib/AST/ASTDumper.cpp

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