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1
4 package gnu.bytecode;
5 import java.io.*;
6
7 public class Field extends Location implements AttrContainer, Member {
8 int flags;
9 Field next;
10
11 Attribute attributes;
12 public final Attribute getAttributes () { return attributes; }
13 public final void setAttributes (Attribute attributes)
14 { this.attributes = attributes; }
15
16
17 ClassType owner;
18
19
20 String  sourceName;
21
22
23 java.lang.reflect.Field rfield;
24
25
26 public Field (ClassType ctype)
27 {
28 if (ctype.last_field == null)
29 ctype.fields = this;
30 else
31 ctype.last_field.next = this;
32 ctype.last_field = this;
33 ctype.fields_count++;
34 owner = ctype;
35 }
36
37 public final ClassType getDeclaringClass()
38 {
39 return owner;
40 }
41
42 public final void setStaticFlag (boolean is_static) {
43 if (is_static)
44 flags |= Access.STATIC;
45 else
46 flags ^= ~Access.STATIC;
47 }
48
49 public final boolean getStaticFlag () {
50 return (flags & Access.STATIC) != 0;
51 }
52
53 public final int getFlags() {
54 return flags;
55 }
56
57 public final int getModifiers() {
58 return flags;
59 }
60
61 void write (DataOutputStream dstr, ClassType classfile)
62 throws java.io.IOException
63 {
64 dstr.writeShort (flags);
65 dstr.writeShort (name_index);
66 dstr.writeShort (signature_index);
67
68 Attribute.writeAll(this, dstr);
69 }
70
71 void assign_constants (ClassType classfile)
72 {
73 ConstantPool constants = classfile.constants;
74 if (name_index == 0 && name != null)
75 name_index = constants.addUtf8(name).index;
76 if (signature_index == 0 && type != null)
77 signature_index = constants.addUtf8(type.signature).index;
78 Attribute.assignConstants(this, classfile);
79 }
80
81 public java.lang.reflect.Field getReflectField()
82 throws java.lang.NoSuchFieldException
83 {
84 if (rfield == null)
85 rfield = owner.getReflectClass().getDeclaredField(getName());
86 return rfield;
87 }
88
89 public void setSourceName(String name)
90 {
91 sourceName = name;
92 }
93
94 public String getSourceName()
95 {
96 if (sourceName == null)
97 sourceName = getName().intern();
98 return sourceName;
99 }
100
101
105 public static Field searchField(Field fields, String name)
106 {
107 for (; fields != null; fields = fields.next)
108 {
109 if (fields.getSourceName() == name)
110 return fields;
111 }
112 return null;
113 }
114
115 public final Field getNext()
116 {
117 return next;
118 }
119
120
126 public final void setConstantValue (Object value, ClassType ctype)
127 {
128 ConstantPool cpool = ctype.constants;
129 if (cpool == null)
130 ctype.constants = cpool = new ConstantPool();
131 char sig1 = getType().getSignature().charAt(0);
132 CpoolEntry entry;
133 switch (sig1)
134 {
135 case 'Z':
136 entry = cpool.addInt(PrimType.booleanValue(value)? 1 : 0);
137 break;
138 case 'C':
139 if (value instanceof Character )
140 {
141 entry = cpool.addInt(((Character ) value).charValue());
142 break;
143 }
144 case 'B':
146 case 'S':
147 case 'I':
148 entry = cpool.addInt(((Number ) value).intValue()); break;
149 case 'J':
150 entry = cpool.addLong(((Number ) value).longValue()); break;
151 case 'F':
152 entry = cpool.addFloat(((Number ) value).floatValue()); break;
153 case 'D':
154 entry = cpool.addDouble(((Number ) value).doubleValue()); break;
155 default:
156 entry = cpool.addString(value.toString()); break;
157 }
158 ConstantValueAttr attr = new ConstantValueAttr(entry.getIndex());
159 attr.addToFrontOf(this);
160 }
161
162 public String toString()
163 {
164 StringBuffer sbuf = new StringBuffer (100);
165 sbuf.append("Field:");
166 sbuf.append(getDeclaringClass().getName());
167 sbuf.append('.');
168 sbuf.append(name);
169 return sbuf.toString();
170 }
171 }
172 |
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