clang-format: [JS] Support for EC6 arrow functions.

Before:
  var b = a.map((x) = > x + 1);

After:
  var b = a.map((x) => x + 1);

llvm-svn: 209112

1 files changed, 3 insertions, 0 deletions

diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index dea2386e0ac..ae8c75ff6dc 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -1244,6 +1244,7 @@ private:
       static tok::TokenKind JSNotIdentity[] = { tok::exclaimequal, tok::equal };
       static tok::TokenKind JSShiftEqual[] = { tok::greater, tok::greater,
                                                tok::greaterequal };
+      static tok::TokenKind JSRightArrow[] = { tok::equal, tok::greater };
       // FIXME: We probably need to change token type to mimic operator with the
       // correct priority.
       if (tryMergeTokens(JSIdentity))
@@ -1252,6 +1253,8 @@ private:
         return;
       if (tryMergeTokens(JSShiftEqual))
         return;
+      if (tryMergeTokens(JSRightArrow))
+        return;
     }
   }