clang-format: [JS] Treat "for" as a reserved word after a ".".

Otherwise, clang-format can get confused with statements like:

  x.for = 1;

llvm-svn: 270188

2 files changed, 4 insertions, 0 deletions

diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index 1713865ee59..2ddff47b930 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -538,6 +538,9 @@ private:
       }
       break;
     case tok::kw_for:
+      if (Style.Language == FormatStyle::LK_JavaScript && Tok->Previous &&
+          Tok->Previous->is(tok::period))
+        break;
       Contexts.back().ColonIsForRangeExpr = true;
       next();
       if (!parseParens())
diff --git a/clang/unittests/Format/FormatTestJS.cpp b/clang/unittests/Format/FormatTestJS.cpp
index 5f60f1d2162..457298704d8 100644
--- a/clang/unittests/Format/FormatTestJS.cpp
+++ b/clang/unittests/Format/FormatTestJS.cpp
@@ -125,6 +125,7 @@ TEST_F(FormatTestJS, ReservedWords) {
   verifyFormat("x.class.struct = 1;");
   verifyFormat("x.case = 1;");
   verifyFormat("x.interface = 1;");
+  verifyFormat("x.for = 1;");
   verifyFormat("x.of() = 1;");
   verifyFormat("x.in() = 1;");
   verifyFormat("x.let() = 1;");