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    1   /*
    2    $Id: SwitchStatement.java,v 1.5 2005/11/13 16:42:10 blackdrag Exp $
    3
    4    Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
    5
    6    Redistribution and use of this software and associated documentation
    7    ("Software"), with or without modification, are permitted provided
    8    that the following conditions are met:
    9
    10   1. Redistributions of source code must retain copyright
    11      statements and notices.  Redistributions must also contain a
    12      copy of this document.
    13
    14   2. Redistributions in binary form must reproduce the
    15      above copyright notice, this list of conditions and the
    16      following disclaimer in the documentation and/or other
    17      materials provided with the distribution.
    18
    19   3. The name "groovy" must not be used to endorse or promote
    20      products derived from this Software without prior written
    21      permission of The Codehaus.  For written permission,
    22      please contact info@codehaus.org.
    23
    24   4. Products derived from this Software may not be called "groovy"
    25      nor may "groovy" appear in their names without prior written
    26      permission of The Codehaus. "groovy" is a registered
    27      trademark of The Codehaus.
    28
    29   5. Due credit should be given to The Codehaus -
    30      http://groovy.codehaus.org/
    31
    32   THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
    33   ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
    34   NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
    35   FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
    36   THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
    37   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    38   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    39   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    40   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
    41   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    42   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
    43   OF THE POSSIBILITY OF SUCH DAMAGE.
    44
    45   */
    46  package org.codehaus.groovy.ast.stmt;
    47
    48  import java.util.ArrayList;
    49  import java.util.List;
    50
    51  import org.codehaus.groovy.ast.GroovyCodeVisitor;
    52  import org.codehaus.groovy.ast.expr.Expression;
    53
    54  /***
    55   * Represents a switch (object) { case value: ... case [1, 2, 3]: ...  default: ... } statement in Groovy.
    56   *
    57   * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
    58   * @version $Revision: 1.5 $
    59   */
    60  public class SwitchStatement extends Statement {
    61
    62      private Expression expression;
    63      private List caseStatements = new ArrayList();
    64      private Statement defaultStatement;
    65
    66
    67      public SwitchStatement(Expression expression) {
    68          this(expression, EmptyStatement.INSTANCE);
    69      }
    70
    71      public SwitchStatement(Expression expression, Statement defaultStatement) {
    72          this.expression = expression;
    73          this.defaultStatement = defaultStatement;
    74      }
    75
    76      public SwitchStatement(Expression expression, List caseStatements, Statement defaultStatement) {
    77          this.expression = expression;
    78          this.caseStatements = caseStatements;
    79          this.defaultStatement = defaultStatement;
    80      }
    81
    82      public void visit(GroovyCodeVisitor visitor) {
    83          visitor.visitSwitch(this);
    84      }
    85
    86      public List getCaseStatements() {
    87          return caseStatements;
    88      }
    89
    90      public Expression getExpression() {
    91          return expression;
    92      }
    93
    94      public void setExpression(Expression e) {
    95          expression=e;
    96      }
    97
    98      public Statement getDefaultStatement() {
    99          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 }