return I->Tok->is(tok::l_paren);
}
+static bool isIIFE(const UnwrappedLine &Line,
+ const AdditionalKeywords &Keywords) {
+ // Look for the start of an immediately invoked anonymous function.
+ // https://en.wikipedia.org/wiki/Immediately-invoked_function_expression
+ // This is commonly done in JavaScript to create a new, anonymous scope.
+ // Example: (function() { ... })()
+ if (Line.Tokens.size() < 3)
+ return false;
+ auto I = Line.Tokens.begin();
+ if (I->Tok->isNot(tok::l_paren))
+ return false;
+ ++I;
+ if (I->Tok->isNot(Keywords.kw_function))
+ return false;
+ ++I;
+ return I->Tok->is(tok::l_paren);
+}
+
static bool ShouldBreakBeforeBrace(const FormatStyle &Style,
const FormatToken &InitialToken) {
if (InitialToken.is(tok::kw_namespace))
FormatTok->BlockKind = BK_Block;
nextToken();
{
- bool GoogScope =
- Style.Language == FormatStyle::LK_JavaScript && isGoogScope(*Line);
+ bool SkipIndent =
+ (Style.Language == FormatStyle::LK_JavaScript &&
+ (isGoogScope(*Line) || isIIFE(*Line, Keywords)));
ScopedLineState LineState(*this);
ScopedDeclarationState DeclarationState(*Line, DeclarationScopeStack,
/*MustBeDeclaration=*/false);
- Line->Level += GoogScope ? 0 : 1;
+ Line->Level += SkipIndent ? 0 : 1;
parseLevel(/*HasOpeningBrace=*/true);
flushComments(isOnNewLine(*FormatTok));
- Line->Level -= GoogScope ? 0 : 1;
+ Line->Level -= SkipIndent ? 0 : 1;
}
nextToken();
}
"});");
}
+TEST_F(FormatTestJS, IIFEs) {
+ // Internal calling parens; no semi.
+ verifyFormat("(function() {\n"
+ "var a = 1;\n"
+ "}())");
+ // External calling parens; no semi.
+ verifyFormat("(function() {\n"
+ "var b = 2;\n"
+ "})()");
+ // Internal calling parens; with semi.
+ verifyFormat("(function() {\n"
+ "var c = 3;\n"
+ "}());");
+ // External calling parens; with semi.
+ verifyFormat("(function() {\n"
+ "var d = 4;\n"
+ "})();");
+}
+
TEST_F(FormatTestJS, GoogModules) {
verifyFormat("goog.module('this.is.really.absurdly.long');",
getGoogleJSStyleWithColumns(40));