1 files changed, 15 insertions, 0 deletions
diff --git a/include/clang/Lex/Lexer.h b/include/clang/Lex/Lexer.h
index 69cfe62e4bdb..97a222f4a703 100644
--- a/include/clang/Lex/Lexer.h
+++ b/include/clang/Lex/Lexer.h
@@ -265,6 +265,21 @@ public:
   /// Return the current location in the buffer.
   const char *getBufferLocation() const { return BufferPtr; }
 
+  /// Returns the current lexing offset.
+  unsigned getCurrentBufferOffset() {
+    assert(BufferPtr >= BufferStart && "Invalid buffer state");
+    return BufferPtr - BufferStart;
+  }
+
+  /// Skip over \p NumBytes bytes.
+  ///
+  /// If the skip is successful, the next token will be lexed from the new
+  /// offset. The lexer also assumes that we skipped to the start of the line.
+  ///
+  /// \returns true if the skip failed (new offset would have been past the
+  /// end of the buffer), false otherwise.
+  bool skipOver(unsigned NumBytes);
+
   /// Stringify - Convert the specified string into a C string by i) escaping
   /// '\\' and " characters and ii) replacing newline character(s) with "\\n".
   /// If Charify is true, this escapes the ' character instead of ".