[PATCH] Added Lexer::getBufferEnd().

[Alexander Kornienko]

  Luckily getBufferStart only has one user. Replaced getBufferStart+getBufferEnd
  with to StringRef getBuffer().

Hi jordan_rose,

http://llvm-reviews.chandlerc.com/D916

CHANGE SINCE LAST DIFF
  http://llvm-reviews.chandlerc.com/D916?vs=2261&id=2263#toc

Files:
  include/clang/Lex/Lexer.h
  lib/Rewrite/Core/HTMLRewrite.cpp

Index: include/clang/Lex/Lexer.h
===================================================================
--- include/clang/Lex/Lexer.h
+++ include/clang/Lex/Lexer.h
@@ -202,7 +202,10 @@
   /// lexer has nothing to reset to.
   void resetExtendedTokenMode();
 
-  const char *getBufferStart() const { return BufferStart; }
+  /// Gets source code buffer.
+  StringRef getBuffer() const {
+    return StringRef(BufferStart, BufferEnd - BufferStart);
+  }
 
   /// ReadToEndOfLine - Read the rest of the current preprocessor line as an
   /// uninterpreted string.  This switches the lexer out of directive mode.
Index: lib/Rewrite/Core/HTMLRewrite.cpp
===================================================================
--- lib/Rewrite/Core/HTMLRewrite.cpp
+++ lib/Rewrite/Core/HTMLRewrite.cpp
@@ -361,7 +361,7 @@
   const SourceManager &SM = PP.getSourceManager();
   const llvm::MemoryBuffer *FromFile = SM.getBuffer(FID);
   Lexer L(FID, FromFile, SM, PP.getLangOpts());
-  const char *BufferStart = L.getBufferStart();
+  const char *BufferStart = L.getBuffer().data();
 
   // Inform the preprocessor that we want to retain comments as tokens, so we
   // can highlight them.
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