1 cananian 1.1.2.2 // InnerClass.java, created Mon Jan 18 22:44:38 1999 by cananian
2 cananian 1.1.2.1 // Copyright (C) 1998 C. Scott Ananian <cananian@alumni.princeton.edu>
3 cananian 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 cananian 1.1.2.1 package harpoon.IR.RawClass;
5 cananian 1.1.2.1
6 cananian 1.1.2.1 /**
7 cananian 1.1.2.1 * Each <code>InnerClass</code> object describes one encoded inner
8 cananian 1.1.2.1 * class name, its defining scope, its simple name, and a bitmask
9 cananian 1.1.2.1 * of the originally declared, untransformed access flags.
10 cananian 1.1.2.1 *
11 cananian 1.1.2.1 * @author C. Scott Ananian <cananian@alumni.princeton.edu>
12 cananian 1.2 * @version $Id: InnerClass.java,v 1.2 2002/02/25 21:05:27 cananian Exp $
13 cananian 1.1.2.1 * @see "Inner Classes Specification"
14 cananian 1.1.2.1 * @see AttributeInnerClasses
15 cananian 1.1.2.1 */
16 cananian 1.1.2.1 public class InnerClass {
17 cananian 1.1.2.1 /** ClassFile in which this attribute information is found. */
18 cananian 1.1.2.1 protected ClassFile parent;
19 cananian 1.1.2.1
20 cananian 1.1.2.1 /** <code>CONSTANT_Class_info</code> pointer to class with encoded name. */
21 cananian 1.1.2.1 public int inner_class_info_index;
22 cananian 1.1.2.1 /** <code>CONSTANT_Class_info</code> pointer to the defining scope for
23 cananian 1.1.2.1 * the inner class.
24 cananian 1.1.2.1 * If the inner class is not a member (of an outer class), then
25 cananian 1.1.2.1 * the <code>outer_class_info_index</code> is zero. */
26 cananian 1.1.2.1 public int outer_class_info_index;
27 cananian 1.1.2.1 /** <code>CONSTANT_Utf8_info</code> pointer to the simple name of the
28 cananian 1.1.2.1 * encoded inner class.
29 cananian 1.1.2.1 * If the inner class is anonymous, its <code>inner_name_index</code>
30 cananian 1.1.2.1 * is zero. <p>
31 cananian 1.1.2.1 * <STRONG>ERRATA</STRONG>: although the specification dictates the
32 cananian 1.1.2.1 * above, current compilers seem to generate a pointer to a name
33 cananian 1.1.2.1 * string of <code>""</code> (that is, a zero-length string) instead.
34 cananian 1.1.2.1 */
35 cananian 1.1.2.1 public int inner_name_index;
36 cananian 1.1.2.1 /** Originally declared, untransformed <code>access_flags</code>. */
37 cananian 1.1.2.1 public AccessFlags inner_class_access_flags;
38 cananian 1.1.2.1
39 cananian 1.1.2.1 /** Constructor. */
40 cananian 1.1.2.1 InnerClass(ClassFile parent, ClassDataInputStream in)
41 cananian 1.1.2.1 throws java.io.IOException
42 cananian 1.1.2.1 {
43 cananian 1.1.2.1 this.parent = parent;
44 cananian 1.1.2.1
45 cananian 1.1.2.1 inner_class_info_index = in.read_u2();
46 cananian 1.1.2.1 outer_class_info_index = in.read_u2();
47 cananian 1.1.2.1 inner_name_index = in.read_u2();
48 cananian 1.1.2.1 inner_class_access_flags = new AccessFlags(in);
49 cananian 1.1.2.1 }
50 cananian 1.1.2.1
51 cananian 1.1.2.1 /** Constructor. */
52 cananian 1.1.2.1 public InnerClass(ClassFile parent,
53 cananian 1.1.2.1 int inner_class_info_index,
54 cananian 1.1.2.1 int outer_class_info_index,
55 cananian 1.1.2.1 int inner_name_index,
56 cananian 1.1.2.1 AccessFlags inner_class_access_flags) {
57 cananian 1.1.2.1 this.parent = parent;
58 cananian 1.1.2.1
59 cananian 1.1.2.1 this.inner_class_info_index = inner_class_info_index;
60 cananian 1.1.2.1 this.outer_class_info_index = outer_class_info_index;
61 cananian 1.1.2.1 this.inner_name_index = inner_name_index;
62 cananian 1.1.2.1 this.inner_class_access_flags = inner_class_access_flags;
63 cananian 1.1.2.1 }
64 cananian 1.1.2.1
65 cananian 1.1.2.1 /** Write to bytecode stream. */
66 cananian 1.1.2.1 public void write(ClassDataOutputStream out) throws java.io.IOException {
67 cananian 1.1.2.1 out.write_u2(inner_class_info_index);
68 cananian 1.1.2.1 out.write_u2(outer_class_info_index);
69 cananian 1.1.2.1 out.write_u2(inner_name_index);
70 cananian 1.1.2.1 inner_class_access_flags.write(out);
71 cananian 1.1.2.1 }
72 cananian 1.1.2.1
73 cananian 1.1.2.1 // convenience
74 cananian 1.1.2.1 public ConstantClass inner_class_info()
75 cananian 1.1.2.1 { return (ConstantClass) parent.constant_pool[inner_class_info_index]; }
76 cananian 1.1.2.1 public ConstantClass outer_class_info() {
77 cananian 1.1.2.1 if (outer_class_info_index==0) return null;
78 cananian 1.1.2.1 return (ConstantClass) parent.constant_pool[outer_class_info_index];
79 cananian 1.1.2.1 }
80 cananian 1.1.2.1 public ConstantUtf8 inner_name_index() {
81 cananian 1.1.2.1 if (inner_name_index==0) return null;
82 cananian 1.1.2.1 return (ConstantUtf8) parent.constant_pool[inner_name_index];
83 cananian 1.1.2.1 }
84 cananian 1.1.2.1 public String inner_name() {
85 cananian 1.1.2.1 if (inner_name_index==0) return null;
86 cananian 1.1.2.1 return inner_name_index().val;
87 cananian 1.1.2.1 }
88 cananian 1.1.2.1
89 cananian 1.1.2.1 /** Human-readable representation. */
90 cananian 1.1.2.1 public String toString() {
91 cananian 1.1.2.1 StringBuffer sb = new StringBuffer();
92 cananian 1.1.2.1 sb.append("InnerClass: ");
93 cananian 1.1.2.1 sb.append(inner_class_info().name());
94 cananian 1.1.2.1 sb.append(" {"+inner_class_info_index+"}");
95 cananian 1.1.2.1 if (outer_class_info_index!=0) {
96 cananian 1.1.2.1 sb.append(" in " + outer_class_info().name());
97 cananian 1.1.2.1 sb.append(" {"+outer_class_info_index+"}");
98 cananian 1.1.2.1 }
99 cananian 1.1.2.1 sb.append(", originally ");
100 cananian 1.1.2.1 sb.append(inner_class_access_flags.toString());
101 cananian 1.1.2.1 sb.append(" ");
102 cananian 1.1.2.1 if (inner_name()==null || inner_name().equals(""))
103 cananian 1.1.2.1 sb.append("<anonymous>");
104 cananian 1.1.2.1 else
105 cananian 1.1.2.1 sb.append(inner_name());
106 cananian 1.1.2.1 sb.append(" {"+inner_name_index+"}");
107 cananian 1.1.2.1 return sb.toString();
108 cananian 1.1.2.1 }
109 cananian 1.2 }