001 /*
002 $Id: ArrayExpression.java,v 1.12 2005/06/10 09:55:29 cstein 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.GroovyCodeVisitor;
053 import org.codehaus.groovy.classgen.AsmClassGenerator;
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: 1.12 $
061 */
062 public class ArrayExpression extends Expression {
063 private List expressions;
064 private Expression sizeExpression;
065
066 private String elementType;
067 /**
068 * Creates an array using an initializer expression
069 */
070 public ArrayExpression(String type, List expressions) {
071 if (!type.endsWith("[]")) type += "[]";
072 setSuperType(type);
073 this.elementType = type;
074 this.expressions = expressions;
075
076 for (Iterator iter = expressions.iterator(); iter.hasNext();) {
077 Object item = iter.next();
078 if (!(item instanceof Expression)) {
079 throw new ClassCastException("Item: " + item + " is not an Expression");
080 }
081 }
082 }
083
084 private void setSuperType(String type) {
085 if (type == null) System.out.println("setSuperType: null");
086 if (type.endsWith("[]")) {
087 }
088 else {
089 type += "[]";
090 }
091 super.setType(type); // array type. todo probably need to wait until ClassGen time to avoid resolve "this" type
092 }
093
094 /**
095 * Creates an empty array of a certain size
096 */
097 public ArrayExpression(String type, Expression sizeExpression) {
098 if (!type.endsWith("[]")) type += "[]";
099 setSuperType(type);
100 this.elementType = type;
101 this.sizeExpression = sizeExpression;
102 this.expressions = Collections.EMPTY_LIST;
103 }
104
105 public void addExpression(Expression expression) {
106 expressions.add(expression);
107 }
108
109 public List getExpressions() {
110 return expressions;
111 }
112
113 public void visit(GroovyCodeVisitor visitor) {
114 visitor.visitArrayExpression(this);
115 }
116
117 public boolean isDynamic() {
118 return false;
119 }
120
121 public Expression transformExpression(ExpressionTransformer transformer) {
122 return new ArrayExpression(type, transformExpressions(expressions, transformer));
123 }
124
125 public Expression getExpression(int i) {
126 Object object = expressions.get(i);
127 return (Expression) object;
128 }
129
130 public String getElementType() {
131 return elementType;
132 }
133
134 public String getText() {
135 StringBuffer buffer = new StringBuffer("[");
136 boolean first = true;
137 for (Iterator iter = expressions.iterator(); iter.hasNext();) {
138 if (first) {
139 first = false;
140 }
141 else {
142 buffer.append(", ");
143 }
144
145 buffer.append(((Expression) iter.next()).getText());
146 }
147 buffer.append("]");
148 return buffer.toString();
149 }
150
151 public Expression getSizeExpression() {
152 return sizeExpression;
153 }
154
155 public String toString() {
156 return super.toString() + expressions;
157 }
158
159 protected void resolveType(AsmClassGenerator resolver) {
160 //
161 }
162 }