clang-format: [JS] Support ES6 destructuring assignments.

Before:
  var[a, b, c] = [1, 2, 3];

After:
  var [a, b, c] = [1, 2, 3];

llvm-svn: 209113

2 files changed, 8 insertions, 0 deletions

diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index d6a54db74e8..47ecd6a4dc3 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -1381,6 +1381,9 @@ bool TokenAnnotator::spaceRequiredBetween(const AnnotatedLine &Line,
     if (Right.is(tok::l_paren) &&
         (Left.TokenText == "returns" || Left.TokenText == "option"))
       return true;
+  } else if (Style.Language == FormatStyle::LK_JavaScript) {
+    if (Left.TokenText == "var")
+      return true;
   }
   if (Left.is(tok::kw_return) && Right.isNot(tok::semi))
     return true;
diff --git a/clang/unittests/Format/FormatTestJS.cpp b/clang/unittests/Format/FormatTestJS.cpp
index c10dc9675f4..f38bf895f21 100644
--- a/clang/unittests/Format/FormatTestJS.cpp
+++ b/clang/unittests/Format/FormatTestJS.cpp
@@ -81,6 +81,11 @@ TEST_F(FormatTestJS, UnderstandsJavaScriptOperators) {
   verifyFormat("var b = a.map((x) => x + 1);");
 }
 
+TEST_F(FormatTestJS, ES6DestructuringAssignment) {
+  verifyFormat("var [a, b, c] = [1, 2, 3];");
+  verifyFormat("var {a, b} = {a: 1, b: 2};");
+}
+
 TEST_F(FormatTestJS, SpacesInContainerLiterals) {
   verifyFormat("var arr = [1, 2, 3];");
   verifyFormat("var obj = {a: 1, b: 2, c: 3};");