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 }