org.antlr.v4.runtime.tree.xpath.XPathElement 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 java.util.Collection;
public abstract class XPathElement {
protected String nodeName;
protected boolean invert;
/** Construct element like {@code /ID} or {@code ID} or {@code /*} etc...
* op is null if just node
*/
public XPathElement(String nodeName) {
this.nodeName = nodeName;
}
/**
* Given tree rooted at {@code t} return all nodes matched by this path
* element.
*/
public abstract Collection evaluate(ParseTree t);
@Override
public String toString() {
String inv = invert ? "!" : "";
return getClass().getSimpleName()+"["+inv+nodeName+"]";
}
}