001 /* 002 $Id: ListExpression.java,v 1.6 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.ArrayList; 049 import java.util.Iterator; 050 import java.util.List; 051 052 import org.codehaus.groovy.ast.ClassHelper; 053 import org.codehaus.groovy.ast.GroovyCodeVisitor; 054 055 /** 056 * Represents a list expression [1, 2, 3] which creates a mutable List 057 * 058 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a> 059 * @version $Revision: 1.6 $ 060 */ 061 public class ListExpression extends Expression { 062 private List expressions; 063 064 public ListExpression() { 065 this(new ArrayList()); 066 } 067 068 public ListExpression(List expressions) { 069 this.expressions = expressions; 070 //TODO: get the type's of the expressions to specify the 071 // list type to List<X> if possible. 072 setType(ClassHelper.LIST_TYPE); 073 } 074 075 public void addExpression(Expression expression) { 076 expressions.add(expression); 077 } 078 079 public List getExpressions() { 080 return expressions; 081 } 082 083 public void visit(GroovyCodeVisitor visitor) { 084 visitor.visitListExpression(this); 085 } 086 087 public Expression transformExpression(ExpressionTransformer transformer) { 088 return new ListExpression(transformExpressions(getExpressions(), transformer)); 089 } 090 091 public Expression getExpression(int i) { 092 return (Expression) expressions.get(i); 093 } 094 095 public String getText() { 096 StringBuffer buffer = new StringBuffer("["); 097 boolean first = true; 098 for (Iterator iter = expressions.iterator(); iter.hasNext(); ) { 099 if (first) { 100 first = false; 101 } 102 else { 103 buffer.append(", "); 104 } 105 106 buffer.append(((Expression)iter.next()).getText()); 107 } 108 buffer.append("]"); 109 return buffer.toString(); 110 } 111 112 public String toString() { 113 return super.toString() + expressions; 114 } 115 }