Better support for multiline string literals (including C++11 raw string literals).

Summary:
Calculate characters in the first and the last line correctly so that
we only break before the literal when needed.

Reviewers: djasper

Reviewed By: djasper

CC: cfe-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D1544

llvm-svn: 189595

1 files changed, 8 insertions, 0 deletions

diff --git a/clang/lib/Format/ContinuationIndenter.h b/clang/lib/Format/ContinuationIndenter.h
index 81d14ad0a22..70b87bb2fbd 100644
--- a/clang/lib/Format/ContinuationIndenter.h
+++ b/clang/lib/Format/ContinuationIndenter.h
@@ -84,6 +84,14 @@ private:
   unsigned breakProtrudingToken(const FormatToken &Current, LineState &State,
                                 bool DryRun);
 
+  /// \brief Adds a multiline string literal to the \p State.
+  ///
+  /// \returns Extra penalty for the first line of the literal: last line is
+  /// handled in \c addNextStateToQueue, and the penalty for other lines doesn't
+  /// matter, as we don't change them.
+  unsigned addMultilineStringLiteral(const FormatToken &Current,
+                                     LineState &State);
+
   /// \brief Returns \c true if the next token starts a multiline string
   /// literal.
   ///