Function fxGroupExpression

xs/sources/xsSyntaxical.c:2987–3056

}

void fxGroupExpression(txParser* parser, txUnsigned flag)
{
	txBoolean commaFlag = 0;
	txBoolean spreadFlag = 0;
	txInteger aCount = 0;
	txInteger aLine;
	txUnsigned formerAwaitingYieldingFlags = parser->flags & (mxAwaitingFlag | mxYieldingFlag);
	parser->flags &= ~(mxAwaitingFlag | mxYieldingFlag);
	fxMatchToken(parser, XS_TOKEN_LEFT_PARENTHESIS);
	while ((parser->states[0].token == XS_TOKEN_SPREAD) || (gxTokenFlags[parser->states[0].token] & XS_TOKEN_BEGIN_EXPRESSION)) {
		aLine = parser->states[0].line;
		commaFlag = 0;
		if (parser->states[0].token == XS_TOKEN_SPREAD) {
			fxGetNextToken(parser);
			fxAssignmentExpression(parser);
			fxPushNodeStruct(parser, 1, XS_TOKEN_SPREAD, aLine);
			spreadFlag = 1;
		}
		else
			fxAssignmentExpression(parser);
		aCount++;
		if (parser->states[0].token != XS_TOKEN_COMMA) 
			break;
		fxGetNextToken(parser);
		commaFlag = 1;
	}
	aLine = parser->states[0].line;
	fxMatchToken(parser, XS_TOKEN_RIGHT_PARENTHESIS);
	if ((!parser->states[0].crlf) && (parser->states[0].token == XS_TOKEN_ARROW)) {
		fxPushNodeList(parser, aCount);
		fxPushNodeStruct(parser, 1, XS_TOKEN_EXPRESSIONS, aLine);
		if (commaFlag && spreadFlag)
			fxReportParserError(parser, parser->states[0].line, "invalid parameters");
		if (!fxParametersBindingFromExpressions(parser, parser->root))
			fxReportParserError(parser, parser->states[0].line, "no parameters");
		fxCheckStrictBinding(parser, parser->root);
		parser->root->flags |= flag;
		if (parser->flags & mxAwaitingFlag) {
			if (flag || (parser->flags & mxAsyncFlag))
				fxReportParserError(parser, parser->states[0].line, "invalid await");
			else
				formerAwaitingYieldingFlags |= mxAwaitingFlag;
		}
		if (parser->flags & mxYieldingFlag)
			fxReportParserError(parser, parser->states[0].line, "invalid yield");
		fxArrowExpression(parser, flag);
	}
	else if (flag) {
		fxPushNodeList(parser, aCount);
		fxPushNodeStruct(parser, 1, XS_TOKEN_PARAMS, aLine);
		if (spreadFlag)
			parser->root->flags |= mxSpreadFlag;
		
		fxPushSymbol(parser, parser->asyncSymbol);
		fxPushNodeStruct(parser, 1, XS_TOKEN_ACCESS, aLine);
		fxSwapNodes(parser);
		fxPushNodeStruct(parser, 2, XS_TOKEN_CALL, aLine);
	}