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 }