InnerClass


1   /*
2    * InnerClass.java
3    *
4    * The contents of this file are subject to the terms of the Common Development
5    * and Distribution License (the License). You may not use this file except in
6    * compliance with the License.
7    *
8    * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
9    * or http://www.netbeans.org/cddl.txt.
10   *
11   * When distributing Covered Code, include this CDDL Header Notice in each file
12   * and include the License file at http://www.netbeans.org/cddl.txt.
13   * If applicable, add the following below the CDDL Header, with the fields
14   * enclosed by brackets [] replaced by your own identifying information:
15   * "Portions Copyrighted [year] [name of copyright owner]"
16   *
17   * The Original Software is NetBeans. The Initial Developer of the Original
18   * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
19   * Microsystems, Inc. All Rights Reserved.
20   *
21   * Contributor(s): Thomas Ball
22   *
23   * Version: $Revision: 1.4 $
24   */
25  
26  package org.netbeans.modules.classfile;
27  
28  import java.io.DataInputStream  ;
29  import java.io.IOException  ;
30  
31  /**
32   * An InnerClass attribute of a classfile.
33   *
34   * @author  Thomas Ball
35   */
36  public final class InnerClass {
37  
38      ClassName name;
39      ClassName outerClassName;
40      String   simpleName;
41      int access;
42  
43      static InnerClass[] loadInnerClasses(DataInputStream   in, ConstantPool pool)
44        throws IOException   {
45          int n = in.readUnsignedShort();
46          InnerClass[] innerClasses = new InnerClass[n];
47          for (int i = 0; i < n; i++)
48              innerClasses[i] = new InnerClass(in, pool);
49          return innerClasses;
50      }
51  
52      InnerClass(DataInputStream   in, ConstantPool pool) 
53        throws IOException   {
54          loadInnerClass(in, pool);
55      }
56  
57      private void loadInnerClass(DataInputStream   in, ConstantPool pool) 
58        throws IOException   {
59          int index = in.readUnsignedShort();
60          name = (index > 0) ? pool.getClass(index).getClassName() : null;
61          index = in.readUnsignedShort();
62      outerClassName = (index > 0) ? pool.getClass(index).getClassName() : null;
63          index = in.readUnsignedShort();
64          if (index > 0) {
65              CPUTF8Info entry = (CPUTF8Info)pool.get(index);
66              simpleName = entry.getName();
67          }
68          access = in.readUnsignedShort();
69      }
70  
71      /** Returns the name of this class, including its package (if any).
72       * If the compiler didn't define this value, the string 
73       * "<not defined>" is returned.
74       * @return the name of this class.
75       */    
76      public final ClassName getName() {
77          return name;
78      }
79      
80      /** Returns the name of the enclosing outer class, including 
81       *  its package (if any).  
82       * @return the name of this class, or null if not available.
83       */    
84      public final ClassName getOuterClassName() {
85          return outerClassName;
86      }
87  
88      /**
89       * Returns the original simple name as given in the source code.
90       * If this is an anonymous class, null is returned instead.
91       * @return the simple name of this class, or null if anonymous.
92       */
93      public final String   getSimpleName() {
94          return simpleName;
95      }
96  
97      /**
98       * Returns the access flags of this class.
99       */
100     public final int getAccess() {
101         return access;
102     }
103 
104     public String   toString() {
105         StringBuffer   sb = new StringBuffer  ();
106         sb.append("innerclass=");
107         sb.append(name);
108         if (simpleName != null) {
109             sb.append(" (");
110             sb.append(simpleName);
111             sb.append(')');
112         }
113         sb.append(", outerclass=");
114         sb.append(outerClassName);
115         return sb.toString();
116     }
117 }
118
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