001 /*
002 $Id: ListExpression.java 3419 2006-01-19 00:07:02Z 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.expr;
047
048 import java.util.ArrayList;
049 import java.util.Iterator;
050 import java.util.List;
051
052 import org.codehaus.groovy.ast.ClassHelper;
053 import org.codehaus.groovy.ast.GroovyCodeVisitor;
054
055 /**
056 * Represents a list expression [1, 2, 3] which creates a mutable List
057 *
058 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
059 * @version $Revision: 3419 $
060 */
061 public class ListExpression extends Expression {
062 private List expressions;
063
064 public ListExpression() {
065 this(new ArrayList());
066 }
067
068 public ListExpression(List expressions) {
069 this.expressions = expressions;
070 //TODO: get the type's of the expressions to specify the
071 // list type to List<X> if possible.
072 setType(ClassHelper.LIST_TYPE);
073 }
074
075 public void addExpression(Expression expression) {
076 expressions.add(expression);
077 }
078
079 public List getExpressions() {
080 return expressions;
081 }
082
083 public void visit(GroovyCodeVisitor visitor) {
084 visitor.visitListExpression(this);
085 }
086
087 public Expression transformExpression(ExpressionTransformer transformer) {
088 Expression ret = new ListExpression(transformExpressions(getExpressions(), transformer));
089 ret.setSourcePosition(this);
090 return ret;
091 }
092
093 public Expression getExpression(int i) {
094 return (Expression) expressions.get(i);
095 }
096
097 public String getText() {
098 StringBuffer buffer = new StringBuffer("[");
099 boolean first = true;
100 for (Iterator iter = expressions.iterator(); iter.hasNext(); ) {
101 if (first) {
102 first = false;
103 }
104 else {
105 buffer.append(", ");
106 }
107
108 buffer.append(((Expression)iter.next()).getText());
109 }
110 buffer.append("]");
111 return buffer.toString();
112 }
113
114 public String toString() {
115 return super.toString() + expressions;
116 }
117 }