From ba9eee326434ba62b180271d3cc2999d94ee0de4 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Thu, 12 Mar 2009 17:31:43 +0000 Subject: [PATCH] add a callback for macro expansion, based on a patch by Paolo Bolzoni! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66799 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/clang/Lex/PPCallbacks.h | 5 +++++ lib/Lex/PPMacroExpansion.cpp | 2 ++ 2 files changed, 7 insertions(+) diff --git a/include/clang/Lex/PPCallbacks.h b/include/clang/Lex/PPCallbacks.h index bf03bb81f2..cd7c5e4215 100644 --- a/include/clang/Lex/PPCallbacks.h +++ b/include/clang/Lex/PPCallbacks.h @@ -21,6 +21,7 @@ namespace clang { class SourceLocation; class IdentifierInfo; + class MacroInfo; /// PPCallbacks - This interface provides a way to observe the actions of the /// preprocessor as it does its thing. Clients can define their hooks here to @@ -54,6 +55,10 @@ public: const std::string &Str) { } + /// MacroExpands - This is called Preprocessor::HandleMacroExpandedIdentifier + /// when a macro invocation is found. + virtual void MacroExpands(const Token &Id, const MacroInfo* MI) { + } }; } // end namespace clang diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp index 84056c3f4b..712918b7c3 100644 --- a/lib/Lex/PPMacroExpansion.cpp +++ b/lib/Lex/PPMacroExpansion.cpp @@ -150,6 +150,8 @@ bool Preprocessor::isNextPPTokenLParen() { /// expanded as a macro, handle it and return the next token as 'Identifier'. bool Preprocessor::HandleMacroExpandedIdentifier(Token &Identifier, MacroInfo *MI) { + if (Callbacks) Callbacks->MacroExpands(Identifier, MI); + // If this is a macro exapnsion in the "#if !defined(x)" line for the file, // then the macro could expand to different things in other contexts, we need // to disable the optimization in this case. -- 2.50.1