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    1   /*
    2    $Id: MapExpression.java 3419 2006-01-19 00:07:02Z blackdrag $
    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.expr;
    47
    48  import java.util.ArrayList;
    49  import java.util.List;
    50
    51  import org.codehaus.groovy.ast.ClassHelper;
    52  import org.codehaus.groovy.ast.GroovyCodeVisitor;
    53
    54  /***
    55   * Represents a map expression [1 : 2, "a" : "b", x : y] which creates a mutable Map
    56   *
    57   * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
    58   * @version $Revision: 3419 $
    59   */
    60  public class MapExpression extends Expression {
    61      private List mapEntryExpressions;
    62
    63      public MapExpression() {
    64          this(new ArrayList());
    65      }
    66
    67      public MapExpression(List mapEntryExpressions) {
    68          this.mapEntryExpressions = mapEntryExpressions;
    69          //TODO: get the type's of the expressions to specify the
    70          // map type to Map<X> if possible.
    71          setType(ClassHelper.MAP_TYPE);
    72      }
    73
    74      public void addMapEntryExpression(MapEntryExpression expression) {
    75          mapEntryExpressions.add(expression);
    76      }
    77
    78      public List getMapEntryExpressions() {
    79          return mapEntryExpressions;
    80      }
    81
    82      public void visit(GroovyCodeVisitor visitor) {
    83          visitor.visitMapExpression(this);
    84      }
    85
    86      public boolean isDynamic() {
    87          return false;  //To change body of implemented methods use File | Settings | File Templates.
    88      }
    89
    90      public Expression transformExpression(ExpressionTransformer transformer) {
    91          Expression ret = new MapExpression(transformExpressions(getMapEntryExpressions(), transformer));
    92          ret.setSourcePosition(this);
    93          return ret;
    94      }
    95
    96      public String toString() {
    97          return super.toString() + mapEntryExpressions;
    98      }
    99
    100     public String getText() {
    101         StringBuffer sb = new StringBuffer(32);
    102         sb.append("[");
    103         int size = mapEntryExpressions.size();
    104         MapEntryExpression mapEntryExpression = null;
    105         if (size > 0) {
    106             mapEntryExpression = (MapEntryExpression) mapEntryExpressions.get(0);
    107             sb.append(mapEntryExpression.getKeyExpression().getText() + ":" + mapEntryExpression.getValueExpression().getText());
    108             for (int i = 1; i < size; i++) {
    109                 mapEntryExpression = (MapEntryExpression) mapEntryExpressions.get(i);
    110                 sb.append(", " + mapEntryExpression.getKeyExpression().getText() + ":" + mapEntryExpression.getValueExpression().getText());
    111                 if (sb.length() > 120 && i < size - 1) {
    112                     sb.append(", ... ");
    113                     break;
    114                 }
    115             }
    116         }
    117         sb.append("]");
    118         return sb.toString();
    119     }
    120
    121     public void addMapEntryExpression(Expression keyExpression, Expression valueExpression) {
    122         addMapEntryExpression(new MapEntryExpression(keyExpression, valueExpression));
    123     }
    124
    125 }