clang-format: [JS] Don't indent in goog.scope blocks.

Before:
  goog.scope(function() {
    var x = a.b;
    var y = c.d;
  });  // goog.scope

After:
  goog.scope(function() {
  var x = a.b;
  var y = c.d;
  });  // goog.scope

llvm-svn: 208088

clang/lib/Format/UnwrappedLineParser.cpp

@@ -415,16 +415,34 @@ void UnwrappedLineParser::parseBlock(bool MustBeDeclaration, bool AddLevel,
   Line->Level = InitialLevel;
 }
 
+static bool IsGoogScope(const UnwrappedLine &Line) {
+  if (Line.Tokens.size() < 4)
+    return false;
+  auto I = Line.Tokens.begin();
+  if (I->Tok->TokenText != "goog")
+    return false;
+  ++I;
+  if (I->Tok->isNot(tok::period))
+    return false;
+  ++I;
+  if (I->Tok->TokenText != "scope")
+    return false;
+  ++I;
+  return I->Tok->is(tok::l_paren);
+}
+
 void UnwrappedLineParser::parseChildBlock() {
   FormatTok->BlockKind = BK_Block;
   nextToken();
   {
+    bool GoogScope =
+        Style.Language == FormatStyle::LK_JavaScript && IsGoogScope(*Line);
     ScopedLineState LineState(*this);
     ScopedDeclarationState DeclarationState(*Line, DeclarationScopeStack,
                                             /*MustBeDeclaration=*/false);
-    Line->Level += 1;
+    Line->Level += GoogScope ? 0 : 1;
     parseLevel(/*HasOpeningBrace=*/true);
-    Line->Level -= 1;
+    Line->Level -= GoogScope ? 0 : 1;
   }
   nextToken();
 }

clang/unittests/Format/FormatTestJS.cpp

@@ -91,5 +91,12 @@ TEST_F(FormatTestJS, SingleQuoteStrings) {
   verifyFormat("this.function('', true);");
 }
 
+TEST_F(FormatTestJS, GoogScopes) {
+  verifyFormat("goog.scope(function() {\n"
+               "var x = a.b;\n"
+               "var y = c.d;\n"
+               "});  // goog.scope");
+}
+
 } // end namespace tooling
 } // end namespace clang