001 /* 002 $Id: TupleExpression.java,v 1.4 2005/02/01 10:46:54 russel 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.Arrays; 050 import java.util.Iterator; 051 import java.util.List; 052 053 import org.codehaus.groovy.ast.GroovyCodeVisitor; 054 import org.codehaus.groovy.classgen.AsmClassGenerator; 055 056 /** 057 * Represents a tuple expression {1, 2, 3} which creates an immutable List 058 * 059 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a> 060 * @version $Revision: 1.4 $ 061 */ 062 public class TupleExpression extends Expression { 063 private List expressions; 064 065 public TupleExpression() { 066 this(new ArrayList()); 067 } 068 069 public TupleExpression(List expressions) { 070 this.expressions = expressions; 071 } 072 073 public TupleExpression(Expression[] expressionArray) { 074 this(); 075 expressions.addAll(Arrays.asList(expressionArray)); 076 } 077 078 public void addExpression(Expression expression) { 079 expressions.add(expression); 080 } 081 082 public List getExpressions() { 083 return expressions; 084 } 085 086 public void visit(GroovyCodeVisitor visitor) { 087 visitor.visitTupleExpression(this); 088 } 089 090 public Expression transformExpression(ExpressionTransformer transformer) { 091 return new TupleExpression(transformExpressions(getExpressions(), transformer)); 092 } 093 094 protected void resolveType(AsmClassGenerator resolver) { 095 boolean failed = false; 096 for (int i = 0; i < expressions.size(); i++) { 097 Expression expression = (Expression) expressions.get(i); 098 expression.resolve(resolver); 099 if (expression.isResolveFailed()) 100 failed = true; 101 } 102 setResolveFailed(failed); 103 } 104 105 public Expression getExpression(int i) { 106 return (Expression) expressions.get(i); 107 } 108 109 public String getText() { 110 StringBuffer buffer = new StringBuffer("("); 111 boolean first = true; 112 for (Iterator iter = expressions.iterator(); iter.hasNext(); ) { 113 if (first) { 114 first = false; 115 } 116 else { 117 buffer.append(", "); 118 } 119 120 buffer.append(((Expression)iter.next()).getText()); 121 } 122 buffer.append(")"); 123 return buffer.toString(); 124 } 125 126 public String toString() { 127 return super.toString() + expressions; 128 } 129 }