001    /*
002     $Id: SwitchStatement.java 3104 2005-11-13 16:42:14Z blackdrag $
003    
004     Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005    
006     Redistribution and use of this software and associated documentation
007     ("Software"), with or without modification, are permitted provided
008     that the following conditions are met:
009    
010     1. Redistributions of source code must retain copyright
011        statements and notices.  Redistributions must also contain a
012        copy of this document.
013    
014     2. Redistributions in binary form must reproduce the
015        above copyright notice, this list of conditions and the
016        following disclaimer in the documentation and/or other
017        materials provided with the distribution.
018    
019     3. The name "groovy" must not be used to endorse or promote
020        products derived from this Software without prior written
021        permission of The Codehaus.  For written permission,
022        please contact info@codehaus.org.
023    
024     4. Products derived from this Software may not be called "groovy"
025        nor may "groovy" appear in their names without prior written
026        permission of The Codehaus. "groovy" is a registered
027        trademark of The Codehaus.
028    
029     5. Due credit should be given to The Codehaus -
030        http://groovy.codehaus.org/
031    
032     THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033     ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034     NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035     FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
036     THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
039     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
040     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
041     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
042     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043     OF THE POSSIBILITY OF SUCH DAMAGE.
044    
045     */
046    package org.codehaus.groovy.ast.stmt;
047    
048    import java.util.ArrayList;
049    import java.util.List;
050    
051    import org.codehaus.groovy.ast.GroovyCodeVisitor;
052    import org.codehaus.groovy.ast.expr.Expression;
053    
054    /**
055     * Represents a switch (object) { case value: ... case [1, 2, 3]: ...  default: ... } statement in Groovy.
056     * 
057     * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
058     * @version $Revision: 3104 $
059     */
060    public class SwitchStatement extends Statement {
061    
062        private Expression expression;
063        private List caseStatements = new ArrayList();
064        private Statement defaultStatement;
065        
066    
067        public SwitchStatement(Expression expression) {
068            this(expression, EmptyStatement.INSTANCE);
069        }
070    
071        public SwitchStatement(Expression expression, Statement defaultStatement) {
072            this.expression = expression;
073            this.defaultStatement = defaultStatement;
074        }
075    
076        public SwitchStatement(Expression expression, List caseStatements, Statement defaultStatement) {
077            this.expression = expression;
078            this.caseStatements = caseStatements;
079            this.defaultStatement = defaultStatement;
080        }
081    
082        public void visit(GroovyCodeVisitor visitor) {
083            visitor.visitSwitch(this);
084        }
085        
086        public List getCaseStatements() {
087            return caseStatements;
088        }
089    
090        public Expression getExpression() {
091            return expression;
092        }
093    
094        public void setExpression(Expression e) {
095            expression=e;
096        }
097        
098        public Statement getDefaultStatement() {
099            return defaultStatement;
100        }
101    
102        public void setDefaultStatement(Statement defaultStatement) {
103            this.defaultStatement = defaultStatement;
104        }
105    
106        public void addCase(CaseStatement caseStatement) {
107            caseStatements.add(caseStatement);
108        }
109    
110        /**
111         * @return the case statement of the given index or null
112         */
113        public CaseStatement getCaseStatement(int idx) {
114            if (idx >= 0 && idx < caseStatements.size()) {
115                return (CaseStatement) caseStatements.get(idx);
116            }
117            return null;
118        }
119    }