clang-format: [JS] Improve empty array literal detection.

Previously, the [] in the following example were recognized as an array
subscript leading to weird indentation.

Before:
  var aaaa = aaaaa || // wrap
                          [];

After:
  var aaaa = aaaaa || // wrap
             [];

llvm-svn: 256753

2 files changed, 5 insertions, 3 deletions

diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index badba16a891..da0fdb91704 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -287,9 +287,9 @@ private:
         Left->Type = TT_JsComputedPropertyName;
       } else if (Style.Language == FormatStyle::LK_Proto ||
                  (Parent &&
-                  Parent->isOneOf(tok::at, tok::equal, tok::comma, tok::l_paren,
-                                  tok::l_square, tok::question, tok::colon,
-                                  tok::kw_return))) {
+                  Parent->isOneOf(TT_BinaryOperator, tok::at, tok::comma,
+                                  tok::l_paren, tok::l_square, tok::question,
+                                  tok::colon, tok::kw_return))) {
         Left->Type = TT_ArrayInitializerLSquare;
       } else {
         BindingIncrease = 10;
diff --git a/clang/unittests/Format/FormatTestJS.cpp b/clang/unittests/Format/FormatTestJS.cpp
index cba2ce3370c..d42eed6048f 100644
--- a/clang/unittests/Format/FormatTestJS.cpp
+++ b/clang/unittests/Format/FormatTestJS.cpp
@@ -310,6 +310,8 @@ TEST_F(FormatTestJS, ArrayLiterals) {
                "      ccccccccccccccccccccccccccc\n"
                "    ],\n"
                "    aaaa);");
+  verifyFormat("var aaaa = aaaaa ||  // wrap\n"
+               "    [];");
 
   verifyFormat("someFunction([], {a: a});");
 }