factor escape newline measuring out into its own helper function.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69482 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 0 deletions

diff --git a/include/clang/Lex/Lexer.h b/include/clang/Lex/Lexer.h
index 61a532ac53..8d0576e4f9 100644
--- a/include/clang/Lex/Lexer.h
+++ b/include/clang/Lex/Lexer.h
@@ -336,6 +336,12 @@ public:
     Size = 0;
     return getCharAndSizeSlowNoWarn(Ptr, Size, Features);
   }
+  
+  /// getEscapedNewLineSize - Return the size of the specified escaped newline,
+  /// or 0 if it is not an escaped newline. P[-1] is known to be a "\" on entry
+  /// to this function.
+  static unsigned getEscapedNewLineSize(const char *P);
+  
 private:
   
   /// getCharAndSizeSlowNoWarn - Same as getCharAndSizeSlow, but never emits a