001 /*
002 $Id: TupleExpression.java 4098 2006-10-10 16:09:48Z 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.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
055 /**
056 * Represents a tuple expression {1, 2, 3} which creates an immutable List
057 *
058 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
059 * @version $Revision: 4098 $
060 */
061 public class TupleExpression extends Expression {
062 private List expressions;
063
064 public TupleExpression() {
065 this(new ArrayList());
066 }
067
068 public TupleExpression(List expressions) {
069 this.expressions = expressions;
070 }
071
072 public TupleExpression(Expression[] expressionArray) {
073 this();
074 expressions.addAll(Arrays.asList(expressionArray));
075 }
076
077 public TupleExpression addExpression(Expression expression) {
078 expressions.add(expression);
079 return this;
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 Expression ret = new TupleExpression(transformExpressions(getExpressions(), transformer));
092 ret.setSourcePosition(this);
093 return ret;
094 }
095
096 public Expression getExpression(int i) {
097 return (Expression) expressions.get(i);
098 }
099
100 public String getText() {
101 StringBuffer buffer = new StringBuffer("(");
102 boolean first = true;
103 for (Iterator iter = expressions.iterator(); iter.hasNext(); ) {
104 if (first) {
105 first = false;
106 }
107 else {
108 buffer.append(", ");
109 }
110
111 buffer.append(((Expression)iter.next()).getText());
112 }
113 buffer.append(")");
114 return buffer.toString();
115 }
116
117 public String toString() {
118 return super.toString() + expressions;
119 }
120 }