ParameterTypeVariable2


1   /*******************************************************************************
2    * Copyright (c) 2000, 2006 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    *
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.jdt.internal.corext.refactoring.typeconstraints2;
12  
13  import org.eclipse.core.runtime.Assert;
14  
15  import org.eclipse.jdt.core.ICompilationUnit;
16  import org.eclipse.jdt.core.dom.IMethodBinding;
17  
18  import org.eclipse.jdt.internal.corext.refactoring.typeconstraints.types.TType;
19  
20  /**
21   * A ParameterTypeVariable is a ConstraintVariable which stands for
22   * the type of a method parameter.
23   */
24  public final class ParameterTypeVariable2 extends ConstraintVariable2 implements ISourceConstraintVariable {
25  
26      private final int fParameterIndex;
27      private final String   fKey;
28      private ICompilationUnit fCompilationUnit;
29      
30      public ParameterTypeVariable2(TType type, int index, IMethodBinding binding) {
31          super(type);
32          Assert.isNotNull(binding);
33          Assert.isTrue(0 <= index);
34          fParameterIndex= index;
35          fKey= binding.getKey();
36      }
37      
38      public void setCompilationUnit(ICompilationUnit cu) {
39          fCompilationUnit= cu;
40      }
41      
42      public ICompilationUnit getCompilationUnit() {
43          return fCompilationUnit;
44      }
45  
46      public int getParameterIndex() {
47          return fParameterIndex;
48      }
49      
50      public String   getKey() {
51          return fKey;
52      }
53  
54      /*
55       * @see java.lang.Object#hashCode()
56       */
57      public int hashCode() {
58          return getParameterIndex() ^ getKey().hashCode();
59      }
60  
61      /*
62       * @see java.lang.Object#equals(java.lang.Object)
63       */
64      public boolean equals(Object   other) {
65          if (this == other)
66              return true;
67          if (other.getClass() != ParameterTypeVariable2.class)
68              return false;
69          
70          ParameterTypeVariable2 other2= (ParameterTypeVariable2) other;
71          return getParameterIndex() == other2.getParameterIndex()
72                  && getKey().equals(other2.getKey());
73      }
74  
75      public String   toString() {
76          String   toString= (String  ) getData(TO_STRING);
77          return toString == null ? "[Parameter(" + fParameterIndex + "," + fKey + ")]" : toString; //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$
78      }
79  }
80
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