Add a new Preprocessor::AdvanceToTokenCharacter method which, given a sloc

specifying the start of a token and a logical (phase 3) character number,
returns a sloc representing the input character corresponding to it.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39905 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 6 insertions, 0 deletions

diff --git a/include/clang/Lex/Lexer.h b/include/clang/Lex/Lexer.h
index 4a8965efa2..173e72f3f1 100644
--- a/include/clang/Lex/Lexer.h
+++ b/include/clang/Lex/Lexer.h
@@ -200,6 +200,7 @@ private:
 
   //===--------------------------------------------------------------------===//
   // Lexer character reading interfaces.
+public:
   
   // This lexer is built on two interfaces for reading characters, both of which
   // automatically provide phase 1/2 translation.  getAndAdvanceChar is used
@@ -239,6 +240,7 @@ private:
     return C;
   }
   
+private:
   /// ConsumeChar - When a character (identified by PeekCharAndSize) is consumed
   /// and added to a given token, check to see if there are diagnostics that
   /// need to be emitted or flags that need to be set on the token.  If so, do
diff --git a/include/clang/Lex/Preprocessor.h b/include/clang/Lex/Preprocessor.h
index 4b6ea1f436..d1fa97872d 100644
--- a/include/clang/Lex/Preprocessor.h
+++ b/include/clang/Lex/Preprocessor.h
@@ -279,6 +279,10 @@ public:
   void DumpToken(const LexerToken &Tok, bool DumpFlags = false) const;
   void DumpMacro(const MacroInfo &MI) const;
   
+  /// AdvanceToTokenCharacter - Given a location that specifies the start of a
+  /// token, return a new location that specifies a character within the token.
+  SourceLocation AdvanceToTokenCharacter(SourceLocation TokStart,unsigned Char);
+  
   /// IncrementPasteCounter - Increment the counters for the number of token
   /// paste operations performed.  If fast was specified, this is a 'fast paste'
   /// case we handled.