1 /*
2 $Id: TupleExpression.java 4098 2006-10-10 16:09:48Z blackdrag $
3
4 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
5
6 Redistribution and use of this software and associated documentation
7 ("Software"), with or without modification, are permitted provided
8 that the following conditions are met:
9
10 1. Redistributions of source code must retain copyright
11 statements and notices. Redistributions must also contain a
12 copy of this document.
13
14 2. Redistributions in binary form must reproduce the
15 above copyright notice, this list of conditions and the
16 following disclaimer in the documentation and/or other
17 materials provided with the distribution.
18
19 3. The name "groovy" must not be used to endorse or promote
20 products derived from this Software without prior written
21 permission of The Codehaus. For written permission,
22 please contact info@codehaus.org.
23
24 4. Products derived from this Software may not be called "groovy"
25 nor may "groovy" appear in their names without prior written
26 permission of The Codehaus. "groovy" is a registered
27 trademark of The Codehaus.
28
29 5. Due credit should be given to The Codehaus -
30 http://groovy.codehaus.org/
31
32 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
33 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
34 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
35 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
36 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
37 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
42 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
43 OF THE POSSIBILITY OF SUCH DAMAGE.
44
45 */
46 package org.codehaus.groovy.ast.expr;
47
48 import java.util.ArrayList;
49 import java.util.Arrays;
50 import java.util.Iterator;
51 import java.util.List;
52
53 import org.codehaus.groovy.ast.GroovyCodeVisitor;
54
55 /***
56 * Represents a tuple expression {1, 2, 3} which creates an immutable List
57 *
58 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
59 * @version $Revision: 4098 $
60 */
61 public class TupleExpression extends Expression {
62 private List expressions;
63
64 public TupleExpression() {
65 this(new ArrayList());
66 }
67
68 public TupleExpression(List expressions) {
69 this.expressions = expressions;
70 }
71
72 public TupleExpression(Expression[] expressionArray) {
73 this();
74 expressions.addAll(Arrays.asList(expressionArray));
75 }
76
77 public TupleExpression addExpression(Expression expression) {
78 expressions.add(expression);
79 return this;
80 }
81
82 public List getExpressions() {
83 return expressions;
84 }
85
86 public void visit(GroovyCodeVisitor visitor) {
87 visitor.visitTupleExpression(this);
88 }
89
90 public Expression transformExpression(ExpressionTransformer transformer) {
91 Expression ret = new TupleExpression(transformExpressions(getExpressions(), transformer));
92 ret.setSourcePosition(this);
93 return ret;
94 }
95
96 public Expression getExpression(int i) {
97 return (Expression) expressions.get(i);
98 }
99
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 }