001 /*
002 $Id: ArrayExpression.java,v 1.14 2005/11/13 16:42:09 blackdrag 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.Collections;
049 import java.util.Iterator;
050 import java.util.List;
051
052 import org.codehaus.groovy.ast.ClassNode;
053 import org.codehaus.groovy.ast.GroovyCodeVisitor;
054
055 /**
056 * Represents an array object construction either using a fixed size
057 * or an initializer expression
058 *
059 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
060 * @version $Revision: 1.14 $
061 */
062 public class ArrayExpression extends Expression {
063 private List expressions;
064 private Expression sizeExpression;
065
066 private ClassNode elementType;
067
068 private ArrayExpression(ClassNode elementType, List expressions, Expression sizeExpression) {
069 //expect to get the elementType
070 super.setType(elementType.makeArray());
071 this.elementType = elementType;
072 this.expressions = expressions;
073 this.sizeExpression = sizeExpression;
074
075 for (Iterator iter = expressions.iterator(); iter.hasNext();) {
076 Object item = iter.next();
077 if (!(item instanceof Expression)) {
078 throw new ClassCastException("Item: " + item + " is not an Expression");
079 }
080 }
081 }
082
083
084 /**
085 * Creates an array using an initializer expression
086 */
087 public ArrayExpression(ClassNode elementType, List expressions) {
088 this(elementType,expressions,null);
089 }
090
091 /**
092 * Creates an empty array of a certain size
093 */
094 public ArrayExpression(ClassNode elementType, Expression sizeExpression) {
095 this(elementType,Collections.EMPTY_LIST,sizeExpression);
096 }
097
098 public void addExpression(Expression expression) {
099 expressions.add(expression);
100 }
101
102 public List getExpressions() {
103 return expressions;
104 }
105
106 public void visit(GroovyCodeVisitor visitor) {
107 visitor.visitArrayExpression(this);
108 }
109
110 public boolean isDynamic() {
111 return false;
112 }
113
114 public Expression transformExpression(ExpressionTransformer transformer) {
115 return new ArrayExpression(elementType, transformExpressions(expressions, transformer), transformer.transform(sizeExpression));
116 }
117
118 public Expression getExpression(int i) {
119 Object object = expressions.get(i);
120 return (Expression) object;
121 }
122
123 public ClassNode getElementType() {
124 return elementType;
125 }
126
127 public String getText() {
128 StringBuffer buffer = new StringBuffer("[");
129 boolean first = true;
130 for (Iterator iter = expressions.iterator(); iter.hasNext();) {
131 if (first) {
132 first = false;
133 }
134 else {
135 buffer.append(", ");
136 }
137
138 buffer.append(((Expression) iter.next()).getText());
139 }
140 buffer.append("]");
141 return buffer.toString();
142 }
143
144 public Expression getSizeExpression() {
145 return sizeExpression;
146 }
147
148 public String toString() {
149 return super.toString() + expressions;
150 }
151 }