org.antlr.v4.runtime.tree.xpath.XPathTokenElement Maven / Gradle / Ivy
/*
* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
* Use of this file is governed by the BSD 3-clause license that
* can be found in the LICENSE.txt file in the project root.
*/
package org.antlr.v4.runtime.tree.xpath;
import org.antlr.v4.runtime.tree.ParseTree;
import org.antlr.v4.runtime.tree.TerminalNode;
import org.antlr.v4.runtime.tree.Tree;
import org.antlr.v4.runtime.tree.Trees;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
public class XPathTokenElement extends XPathElement {
protected int tokenType;
public XPathTokenElement(String tokenName, int tokenType) {
super(tokenName);
this.tokenType = tokenType;
}
@Override
public Collection evaluate(ParseTree t) {
// return all children of t that match nodeName
List nodes = new ArrayList();
for (Tree c : Trees.getChildren(t)) {
if ( c instanceof TerminalNode ) {
TerminalNode tnode = (TerminalNode)c;
if ( (tnode.getSymbol().getType() == tokenType && !invert) ||
(tnode.getSymbol().getType() != tokenType && invert) )
{
nodes.add(tnode);
}
}
}
return nodes;
}
}
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