1 /*
2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.classfile;
27
28 import java.io.IOException;
29
30 import com.sun.tools.classfile.ConstantPool.CONSTANT_Module_info;
31
32 /**
33 * See Jigsaw.
34 *
35 * <p><b>This is NOT part of any supported API.
36 * If you write code that depends on this, you do so at your own risk.
37 * This code and its internal interfaces are subject to change or
38 * deletion without notice.</b>
39 */
40 public class Module_attribute extends Attribute {
41 public static final int ACC_TRANSITIVE = 0x20;
42 public static final int ACC_STATIC_PHASE = 0x40;
43 public static final int ACC_OPEN = 0x20;
44 public static final int ACC_SYNTHETIC = 0x1000;
45 public static final int ACC_MANDATED = 0x8000;
46
47 Module_attribute(ClassReader cr, int name_index, int length) throws IOException {
48 super(name_index, length);
49
50 module_name = cr.readUnsignedShort();
51 module_flags = cr.readUnsignedShort();
52
53 module_version_index = cr.readUnsignedShort();
54
55 requires_count = cr.readUnsignedShort();
56 requires = new RequiresEntry[requires_count];
57 for (int i = 0; i < requires_count; i++)
58 requires[i] = new RequiresEntry(cr);
59
60 exports_count = cr.readUnsignedShort();
61 exports = new ExportsEntry[exports_count];
62 for (int i = 0; i < exports_count; i++)
63 exports[i] = new ExportsEntry(cr);
64
65 opens_count = cr.readUnsignedShort();
66 opens = new OpensEntry[opens_count];
67 for (int i = 0; i < opens_count; i++)
68 opens[i] = new OpensEntry(cr);
69
70 uses_count = cr.readUnsignedShort();
71 uses_index = new int[uses_count];
72 for (int i = 0; i < uses_count; i++)
73 uses_index[i] = cr.readUnsignedShort();
74
75 provides_count = cr.readUnsignedShort();
76 provides = new ProvidesEntry[provides_count];
77 for (int i = 0; i < provides_count; i++)
78 provides[i] = new ProvidesEntry(cr);
79 }
80
81 public Module_attribute(int name_index,
82 int module_name,
83 int module_flags,
84 int module_version_index,
85 RequiresEntry[] requires,
86 ExportsEntry[] exports,
87 OpensEntry[] opens,
88 int[] uses,
89 ProvidesEntry[] provides) {
90 super(name_index, 2);
91 this.module_name = module_name;
92 this.module_flags = module_flags;
93 this.module_version_index = module_version_index;
94 requires_count = requires.length;
95 this.requires = requires;
96 exports_count = exports.length;
97 this.exports = exports;
98 opens_count = opens.length;
99 this.opens = opens;
100 uses_count = uses.length;
101 this.uses_index = uses;
102 provides_count = provides.length;
103 this.provides = provides;
104 }
105
106 public String getUses(int index, ConstantPool constant_pool) throws ConstantPoolException {
107 int i = uses_index[index];
108 return constant_pool.getClassInfo(i).getName();
109 }
110
111 @Override
112 public <R, D> R accept(Visitor<R, D> visitor, D data) {
113 return visitor.visitModule(this, data);
114 }
115
116 public final int module_name;
117 public final int module_flags;
118 public final int module_version_index;
119 public final int requires_count;
120 public final RequiresEntry[] requires;
121 public final int exports_count;
122 public final ExportsEntry[] exports;
123 public final int opens_count;
124 public final OpensEntry[] opens;
125 public final int uses_count;
126 public final int[] uses_index;
127 public final int provides_count;
128 public final ProvidesEntry[] provides;
129
130 public static class RequiresEntry {
131 RequiresEntry(ClassReader cr) throws IOException {
132 requires_index = cr.readUnsignedShort();
133 requires_flags = cr.readUnsignedShort();
134 requires_version_index = cr.readUnsignedShort();
135 }
136
137 public RequiresEntry(int index, int flags, int version_index) {
138 this.requires_index = index;
139 this.requires_flags = flags;
140 this.requires_version_index = version_index;
141 }
142
143 public String getRequires(ConstantPool constant_pool) throws ConstantPoolException {
144 CONSTANT_Module_info info = constant_pool.getModuleInfo(requires_index);
145 return info.getName();
146 }
147
148 public static final int length = 4;
149
150 public final int requires_index;
151 public final int requires_flags;
152 public final int requires_version_index;
153 }
154
155 public static class ExportsEntry {
156 ExportsEntry(ClassReader cr) throws IOException {
157 exports_index = cr.readUnsignedShort();
158 exports_flags = cr.readUnsignedShort();
159 exports_to_count = cr.readUnsignedShort();
160 exports_to_index = new int[exports_to_count];
161 for (int i = 0; i < exports_to_count; i++)
162 exports_to_index[i] = cr.readUnsignedShort();
163 }
164
165 public ExportsEntry(int index, int flags, int[] to) {
166 this.exports_index = index;
167 this.exports_flags = flags;
168 this.exports_to_count = to.length;
169 this.exports_to_index = to;
170 }
171
172 public int length() {
173 return 4 + 2 * exports_to_index.length;
174 }
175
176 public final int exports_index;
177 public final int exports_flags;
178 public final int exports_to_count;
179 public final int[] exports_to_index;
180 }
181
182 public static class OpensEntry {
183 OpensEntry(ClassReader cr) throws IOException {
184 opens_index = cr.readUnsignedShort();
185 opens_flags = cr.readUnsignedShort();
186 opens_to_count = cr.readUnsignedShort();
187 opens_to_index = new int[opens_to_count];
188 for (int i = 0; i < opens_to_count; i++)
189 opens_to_index[i] = cr.readUnsignedShort();
190 }
191
192 public OpensEntry(int index, int flags, int[] to) {
193 this.opens_index = index;
194 this.opens_flags = flags;
195 this.opens_to_count = to.length;
196 this.opens_to_index = to;
197 }
198
199 public int length() {
200 return 4 + 2 * opens_to_index.length;
201 }
202
203 public final int opens_index;
204 public final int opens_flags;
205 public final int opens_to_count;
206 public final int[] opens_to_index;
207 }
208
209 public static class ProvidesEntry {
210 ProvidesEntry(ClassReader cr) throws IOException {
211 provides_index = cr.readUnsignedShort();
212 with_count = cr.readUnsignedShort();
213 with_index = new int[with_count];
214 for (int i = 0; i < with_count; i++)
215 with_index[i] = cr.readUnsignedShort();
216 }
217
218 public ProvidesEntry(int provides, int[] with) {
219 this.provides_index = provides;
220 this.with_count = with.length;
221 this.with_index = with;
222 }
223
224 public static final int length = 4;
225
226 public final int provides_index;
227 public final int with_count;
228 public final int[] with_index;
229 }
230 }