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Groovy example source code file (Reduction.java)
The Groovy Reduction.java source code/*
* Copyright 2003-2007 the original author or authors.
*
* 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 org.codehaus.groovy.syntax;
import org.codehaus.groovy.GroovyBugError;
import java.util.List;
import java.util.ArrayList;
import java.util.Collections;
/**
* A syntax reduction, produced by the <code>Parser.
*
* @see antlr.Parser
* @see Token
* @see CSTNode
* @see Types
*
* @author <a href="mailto:bob@werken.com">bob mcwhirter
* @author <a href="mailto:cpoirier@dreaming.org">Chris Poirier
*
* @version $Id: Reduction.java 7922 2007-09-04 01:42:57Z paulk $
*/
public class Reduction extends CSTNode
{
public static final Reduction EMPTY = new Reduction();
//---------------------------------------------------------------------------
// INITIALIZATION AND SUCH
private List elements = null; // The set of child nodes
private boolean marked = false; // Used for completion marking by some parts of the parser
/**
* Initializes the <code>Reduction with the specified root.
*/
public Reduction( Token root )
{
elements = new ArrayList();
set( 0, root );
}
/**
* Initializes the <code>Reduction to empty.
*/
private Reduction()
{
elements = Collections.EMPTY_LIST;
}
/**
* Creates a new <code>Reduction with
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