1   /*
2    $Id: TupleListTest.java,v 1.8 2005/11/13 16:42:14 blackdrag Exp $
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
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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  
47  package org.codehaus.groovy.classgen;
48  
49  import org.codehaus.groovy.ast.ClassHelper;
50  import org.codehaus.groovy.ast.ClassNode;
51  import org.codehaus.groovy.ast.ConstructorNode;
52  import org.codehaus.groovy.ast.MethodNode;
53  import org.codehaus.groovy.ast.Parameter;
54  import org.codehaus.groovy.ast.PropertyNode;
55  import org.codehaus.groovy.ast.expr.BinaryExpression;
56  import org.codehaus.groovy.ast.expr.ConstantExpression;
57  import org.codehaus.groovy.ast.expr.Expression;
58  import org.codehaus.groovy.ast.expr.ListExpression;
59  import org.codehaus.groovy.ast.expr.MapExpression;
60  import org.codehaus.groovy.ast.expr.TupleExpression;
61  import org.codehaus.groovy.ast.expr.VariableExpression;
62  import org.codehaus.groovy.ast.stmt.ExpressionStatement;
63  import org.codehaus.groovy.ast.stmt.ForStatement;
64  import org.codehaus.groovy.ast.stmt.Statement;
65  import org.codehaus.groovy.ast.stmt.BlockStatement;
66  import org.codehaus.groovy.runtime.InvokerHelper;
67  import org.codehaus.groovy.runtime.InvokerInvocationException;
68  import org.codehaus.groovy.syntax.Token;
69  
70  /***
71   * 
72   * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
73   * @version $Revision: 1.8 $
74   */
75  public class TupleListTest extends TestSupport {
76  
77      public void testIterateOverTuple() throws Exception {
78          TupleExpression listExpression = new TupleExpression();
79          listExpression.addExpression(new ConstantExpression("a"));
80          listExpression.addExpression(new ConstantExpression("b"));
81          listExpression.addExpression(new ConstantExpression("c"));
82          assertIterate("iterateOverTuple", listExpression);
83      }
84      
85      public void testIterateOverList() throws Exception {
86          ListExpression listExpression = new ListExpression();
87          listExpression.addExpression(new ConstantExpression("a"));
88          listExpression.addExpression(new ConstantExpression("b"));
89          listExpression.addExpression(new ConstantExpression("c"));
90          listExpression.addExpression(new ConstantExpression("a"));
91          listExpression.addExpression(new ConstantExpression("b"));
92          listExpression.addExpression(new ConstantExpression("c"));
93          assertIterate("iterateOverList", listExpression);
94      }
95      
96      public void testIterateOverMap() throws Exception {
97          MapExpression mapExpression = new MapExpression();
98          mapExpression.addMapEntryExpression(new ConstantExpression("a"), new ConstantExpression("x"));
99          mapExpression.addMapEntryExpression(new ConstantExpression("b"), new ConstantExpression("y"));
100         mapExpression.addMapEntryExpression(new ConstantExpression("c"), new ConstantExpression("z"));
101         assertIterate("iterateOverMap", mapExpression);
102     }
103     
104     protected void assertIterate(String methodName, Expression listExpression) throws Exception {
105         ClassNode classNode = new ClassNode("Foo", ACC_PUBLIC, ClassHelper.OBJECT_TYPE);
106         classNode.addConstructor(new ConstructorNode(ACC_PUBLIC, null));
107         classNode.addProperty(new PropertyNode("bar", ACC_PUBLIC, ClassHelper.STRING_TYPE, classNode, null, null, null));
108 
109         Statement loopStatement = createPrintlnStatement(new VariableExpression("i"));
110 
111         BlockStatement block = new BlockStatement();
112         block.addStatement(new ExpressionStatement(new BinaryExpression(new VariableExpression("list"), Token.newSymbol("=", 0, 0), listExpression)));
113         block.addStatement(new ForStatement("i", ClassHelper.DYNAMIC_TYPE, new VariableExpression("list"), loopStatement));
114         classNode.addMethod(new MethodNode(methodName, ACC_PUBLIC, ClassHelper.VOID_TYPE, Parameter.EMPTY_ARRAY, block));
115 
116         Class fooClass = loadClass(classNode);
117         assertTrue("Loaded a new class", fooClass != null);
118 
119         Object bean = fooClass.newInstance();
120         assertTrue("Managed to create bean", bean != null);
121 
122         System.out.println("################ Now about to invoke method");
123         
124         try {
125             InvokerHelper.invokeMethod(bean, methodName, null);
126         }
127         catch (InvokerInvocationException e) {
128             System.out.println("Caught: " + e.getCause());
129             e.getCause().printStackTrace();
130             fail("Should not have thrown an exception");
131         }
132         System.out.println("################ Done");    }
133 
134 }