[PATCH] D106732: Support macro deprecation #pragma clang deprecated

[Chris Bieneman via Phabricator via cfe-commits]

beanz updated this revision to Diff 362528.
beanz added a comment.

Covered taken #elif* directives per @aaron.ballmon's feedback.

Handling non-taken #elif directives is non-trivial because clang skips parsing the conditionals for non-taken directives. At present clang won't even error on malformed #elif directives if an earlier branch is taken.

Also with this update I refactored the error emitting code out to a function on the Preprocessor, since it is just getting copy and pasted over and over again, and this change would have added another copy.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D106732/new/

https://reviews.llvm.org/D106732

Files:
  clang/docs/LanguageExtensions.rst
  clang/include/clang/Basic/DiagnosticGroups.td
  clang/include/clang/Basic/DiagnosticLexKinds.td
  clang/include/clang/Basic/IdentifierTable.h
  clang/include/clang/Lex/Preprocessor.h
  clang/lib/Lex/PPDirectives.cpp
  clang/lib/Lex/PPExpressions.cpp
  clang/lib/Lex/PPMacroExpansion.cpp
  clang/lib/Lex/Pragma.cpp
  clang/lib/Lex/Preprocessor.cpp
  clang/test/Lexer/deprecate-macro.c

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