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 }