protected void consumeStatementReturn() {
	// ReturnStatement ::= 'return' Expressionopt ';'
	// return pushs a position on this.intStack in case there is no expression

	if (this.expressionLengthStack[this.expressionLengthPtr--] != 0) {
		pushOnAstStack(
			new ReturnStatement(
				this.expressionStack[this.expressionPtr--],
				this.intStack[this.intPtr--],
				this.endStatementPosition)
		);
	} else {
		pushOnAstStack(new ReturnStatement(null, this.intStack[this.intPtr--], this.endStatementPosition));
	}
}