net.sourceforge.pmd.lang.velocity.ast.AbstractVtlNode Maven / Gradle / Ivy
package net.sourceforge.pmd.lang.velocity.ast;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
import net.sourceforge.pmd.lang.ast.AstVisitor;
import net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode;
import net.sourceforge.pmd.lang.ast.impl.javacc.JavaccToken;
abstract class AbstractVtlNode extends AbstractJjtreeNode implements VtlNode {
protected AbstractVtlNode(final int i) {
super(i);
}
@Override
public String getXPathNodeName() {
return VtlParserImplTreeConstants.jjtNodeName[id];
}
protected abstract R acceptVtlVisitor(VtlVisitor visitor, P data);
@Override
@SuppressWarnings("unchecked")
public final R acceptVisitor(AstVisitor visitor, P data) {
if (visitor instanceof VtlVisitor) {
return acceptVtlVisitor((VtlVisitor) visitor, data);
}
return visitor.cannotVisit(this, data);
}
/*
* see org.apache.velocity.runtime.parser.node.Node#literal()
*/
public String literal() {
// if we have only one string, just return it and avoid
// buffer allocation. VELOCITY-606
if (getFirstToken() != null && getFirstToken().equals(getLastToken())) {
return NodeUtils.tokenLiteral(getFirstToken());
}
JavaccToken t = getFirstToken();
final StringBuilder sb = new StringBuilder(NodeUtils.tokenLiteral(t));
while (t != null && !t.equals(getLastToken())) {
t = t.getNext();
sb.append(NodeUtils.tokenLiteral(t));
}
return sb.toString();
}
}