001    /*
002     $Id: MapExpression.java,v 1.6 2005/05/20 16:28:49 phk Exp $
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.expr;
047    
048    import java.util.ArrayList;
049    import java.util.List;
050    import java.util.Map;
051    
052    import org.codehaus.groovy.ast.GroovyCodeVisitor;
053    import org.codehaus.groovy.classgen.AsmClassGenerator;
054    
055    /**
056     * Represents a map expression [1 : 2, "a" : "b", x : y] which creates a mutable Map
057     * 
058     * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
059     * @version $Revision: 1.6 $
060     */
061    public class MapExpression extends Expression {
062        private List mapEntryExpressions;
063    
064        public MapExpression() {
065            this(new ArrayList());
066        }
067        
068        public MapExpression(List mapEntryExpressions) {
069            this.mapEntryExpressions = mapEntryExpressions;
070        }
071        
072        public void addMapEntryExpression(MapEntryExpression expression) {
073            mapEntryExpressions.add(expression);
074        }
075        
076        public List getMapEntryExpressions() {
077            return mapEntryExpressions;
078        }
079    
080        public void visit(GroovyCodeVisitor visitor) {
081            visitor.visitMapExpression(this);
082        }
083    
084        public boolean isDynamic() {
085            return false;  //To change body of implemented methods use File | Settings | File Templates.
086        }
087    
088        public Expression transformExpression(ExpressionTransformer transformer) {
089            return new MapExpression(transformExpressions(getMapEntryExpressions(), transformer));
090        }
091        
092        public String toString() {
093            return super.toString() + mapEntryExpressions;
094        }
095    
096        public String getText() {
097            StringBuffer sb = new StringBuffer(32);
098            sb.append("[");
099            int size = mapEntryExpressions.size();
100            MapEntryExpression mapEntryExpression = null;
101            if (size > 0) {
102                mapEntryExpression = (MapEntryExpression) mapEntryExpressions.get(0);
103                sb.append(mapEntryExpression.getKeyExpression().getText() + ":" + mapEntryExpression.getValueExpression().getText());
104                for (int i = 1; i < size; i++) {
105                    mapEntryExpression = (MapEntryExpression) mapEntryExpressions.get(i);
106                    sb.append(", " + mapEntryExpression.getKeyExpression().getText() + ":" + mapEntryExpression.getValueExpression().getText());
107                    if (sb.length() > 120 && i < size - 1) {
108                        sb.append(", ... ");
109                        break;
110                    }
111                }
112            }
113            sb.append("]");
114            return sb.toString();
115        }
116    
117        public void addMapEntryExpression(Expression keyExpression, Expression valueExpression) {
118            addMapEntryExpression(new MapEntryExpression(keyExpression, valueExpression));
119        }
120    
121        protected void resolveType(AsmClassGenerator resolver) {
122            for (int i = 0; i < mapEntryExpressions.size(); i++) {
123                MapEntryExpression mapEntryExpression = (MapEntryExpression) mapEntryExpressions.get(i);
124                mapEntryExpression.resolve(resolver);
125            }
126            super.setTypeClass(Map.class);
127        }
128    }