manifold.js.rt.parser.tree.ArrowExpressionNode Maven / Gradle / Ivy
/*
* Copyright (c) 2018 - Manifold Systems LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package manifold.js.rt.parser.tree;
import manifold.js.rt.parser.Token;
public class ArrowExpressionNode extends Node
{
private String _params = "";
public ArrowExpressionNode()
{
super(null);
}
public void extractParams(FillerNode fillerNode) {
Token backToke = fillerNode.removeLastNonWhitespaceToken();
//If prev token is not ')', then there is only one parameter
if (!backToke.getValue().equals(")")) {
_params = backToke.getValue();
return;
}
//Otherwise, backtrack through list until opening parens
backToke = fillerNode.removeLastToken();
while (!(backToke.getValue().equals("("))) {
_params = backToke.getValue() + _params;
backToke = fillerNode.removeLastToken();
}
}
@Override
public String genCode()
{
//## todo: this was ok with nashorn, but maybe not with rhino...
/*For expressions, use closure extension function (ex. function square(x) x*x;)*/
return "function (" + _params + ")" + super.genCode();
}
}