001 /*
002 $Id: ArrayExpression.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.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: 3419 $
061 */
062 public class ArrayExpression extends Expression {
063 private List expressions;
064 private List sizeExpression;
065
066 private ClassNode elementType;
067
068 private static ClassNode makeArray(ClassNode base, List sizeExpression) {
069 ClassNode ret = base.makeArray();
070 if (sizeExpression==null) return ret;
071 int size = sizeExpression.size();
072 for (int i=1; i<size; i++) {
073 ret = ret.makeArray();
074 }
075 return ret;
076 }
077
078 public ArrayExpression(ClassNode elementType, List expressions, List sizeExpression) {
079 //expect to get the elementType
080 super.setType(makeArray(elementType,sizeExpression));
081 if (expressions==null) expressions=Collections.EMPTY_LIST;
082 this.elementType = elementType;
083 this.expressions = expressions;
084 this.sizeExpression = sizeExpression;
085
086 for (Iterator iter = expressions.iterator(); iter.hasNext();) {
087 Object item = iter.next();
088 if (item!=null && !(item instanceof Expression)) {
089 throw new ClassCastException("Item: " + item + " is not an Expression");
090 }
091 }
092 if (sizeExpression!=null) {
093 for (Iterator iter = sizeExpression.iterator(); iter.hasNext();) {
094 Object item = iter.next();
095 if (!(item instanceof Expression)) {
096 throw new ClassCastException("Item: " + item + " is not an Expression");
097 }
098 }
099 }
100 }
101
102
103 /**
104 * Creates an array using an initializer expression
105 */
106 public ArrayExpression(ClassNode elementType, List expressions) {
107 this(elementType,expressions,null);
108 }
109
110 public void addExpression(Expression expression) {
111 expressions.add(expression);
112 }
113
114 public List getExpressions() {
115 return expressions;
116 }
117
118 public void visit(GroovyCodeVisitor visitor) {
119 visitor.visitArrayExpression(this);
120 }
121
122 public boolean isDynamic() {
123 return false;
124 }
125
126 public Expression transformExpression(ExpressionTransformer transformer) {
127 List exprList = transformExpressions(expressions, transformer);
128 List sizes = null;
129 if (sizeExpression!=null) sizes = transformExpressions(sizeExpression,transformer);
130 Expression ret = new ArrayExpression(elementType, exprList, sizes);
131 ret.setSourcePosition(this);
132 return ret;
133 }
134
135 public Expression getExpression(int i) {
136 Object object = expressions.get(i);
137 return (Expression) object;
138 }
139
140 public ClassNode getElementType() {
141 return elementType;
142 }
143
144 public String getText() {
145 StringBuffer buffer = new StringBuffer("[");
146 boolean first = true;
147 for (Iterator iter = expressions.iterator(); iter.hasNext();) {
148 if (first) {
149 first = false;
150 }
151 else {
152 buffer.append(", ");
153 }
154
155 buffer.append(((Expression) iter.next()).getText());
156 }
157 buffer.append("]");
158 return buffer.toString();
159 }
160
161 public List getSizeExpression() {
162 return sizeExpression;
163 }
164
165 public String toString() {
166 return super.toString() + expressions;
167 }
168 }