Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/classfile/Annotation.java@2eb010b6cb22 (annotated)

src/share/classes/com/sun/tools/classfile/Annotation.java

Thu, 31 Aug 2017 15:17:03 +0800

author
aoqi
date
Thu, 31 Aug 2017 15:17:03 +0800
changeset 2525
2eb010b6cb22
parent 972
694ff82ca68e
parent 0
959103a6100f
permissions
-rw-r--r--

merge

aoqi@0 1 /*
aoqi@0 2 * Copyright (c) 2007, 2009, Oracle and/or its affiliates. All rights reserved.
aoqi@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0 4 *
aoqi@0 5 * This code is free software; you can redistribute it and/or modify it
aoqi@0 6 * under the terms of the GNU General Public License version 2 only, as
aoqi@0 7 * published by the Free Software Foundation. Oracle designates this
aoqi@0 8 * particular file as subject to the "Classpath" exception as provided
aoqi@0 9 * by Oracle in the LICENSE file that accompanied this code.
aoqi@0 10 *
aoqi@0 11 * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0 14 * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0 15 * accompanied this code).
aoqi@0 16 *
aoqi@0 17 * You should have received a copy of the GNU General Public License version
aoqi@0 18 * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0 20 *
aoqi@0 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0 22 * or visit www.oracle.com if you need additional information or have any
aoqi@0 23 * questions.
aoqi@0 24 */
aoqi@0 25
aoqi@0 26 package com.sun.tools.classfile;
aoqi@0 27
aoqi@0 28 import java.io.IOException;
aoqi@0 29
aoqi@0 30 /**
aoqi@0 31 * See JVMS, section 4.8.16.
aoqi@0 32 *
aoqi@0 33 * <p><b>This is NOT part of any supported API.
aoqi@0 34 * If you write code that depends on this, you do so at your own risk.
aoqi@0 35 * This code and its internal interfaces are subject to change or
aoqi@0 36 * deletion without notice.</b>
aoqi@0 37 */
aoqi@0 38 public class Annotation {
aoqi@0 39 static class InvalidAnnotation extends AttributeException {
aoqi@0 40 private static final long serialVersionUID = -4620480740735772708L;
aoqi@0 41 InvalidAnnotation(String msg) {
aoqi@0 42 super(msg);
aoqi@0 43 }
aoqi@0 44 }
aoqi@0 45
aoqi@0 46 Annotation(ClassReader cr) throws IOException, InvalidAnnotation {
aoqi@0 47 type_index = cr.readUnsignedShort();
aoqi@0 48 num_element_value_pairs = cr.readUnsignedShort();
aoqi@0 49 element_value_pairs = new element_value_pair[num_element_value_pairs];
aoqi@0 50 for (int i = 0; i < element_value_pairs.length; i++)
aoqi@0 51 element_value_pairs[i] = new element_value_pair(cr);
aoqi@0 52 }
aoqi@0 53
aoqi@0 54 public Annotation(ConstantPool constant_pool,
aoqi@0 55 int type_index,
aoqi@0 56 element_value_pair[] element_value_pairs) {
aoqi@0 57 this.type_index = type_index;
aoqi@0 58 num_element_value_pairs = element_value_pairs.length;
aoqi@0 59 this.element_value_pairs = element_value_pairs;
aoqi@0 60 }
aoqi@0 61
aoqi@0 62 public int length() {
aoqi@0 63 int n = 2 /*type_index*/ + 2 /*num_element_value_pairs*/;
aoqi@0 64 for (element_value_pair pair: element_value_pairs)
aoqi@0 65 n += pair.length();
aoqi@0 66 return n;
aoqi@0 67 }
aoqi@0 68
aoqi@0 69 public final int type_index;
aoqi@0 70 public final int num_element_value_pairs;
aoqi@0 71 public final element_value_pair element_value_pairs[];
aoqi@0 72
aoqi@0 73 /**
aoqi@0 74 * See JVMS, section 4.8.16.1.
aoqi@0 75 */
aoqi@0 76 public static abstract class element_value {
aoqi@0 77 public static element_value read(ClassReader cr)
aoqi@0 78 throws IOException, InvalidAnnotation {
aoqi@0 79 int tag = cr.readUnsignedByte();
aoqi@0 80 switch (tag) {
aoqi@0 81 case 'B':
aoqi@0 82 case 'C':
aoqi@0 83 case 'D':
aoqi@0 84 case 'F':
aoqi@0 85 case 'I':
aoqi@0 86 case 'J':
aoqi@0 87 case 'S':
aoqi@0 88 case 'Z':
aoqi@0 89 case 's':
aoqi@0 90 return new Primitive_element_value(cr, tag);
aoqi@0 91
aoqi@0 92 case 'e':
aoqi@0 93 return new Enum_element_value(cr, tag);
aoqi@0 94
aoqi@0 95 case 'c':
aoqi@0 96 return new Class_element_value(cr, tag);
aoqi@0 97
aoqi@0 98 case '@':
aoqi@0 99 return new Annotation_element_value(cr, tag);
aoqi@0 100
aoqi@0 101 case '[':
aoqi@0 102 return new Array_element_value(cr, tag);
aoqi@0 103
aoqi@0 104 default:
aoqi@0 105 throw new InvalidAnnotation("unrecognized tag: " + tag);
aoqi@0 106 }
aoqi@0 107 }
aoqi@0 108
aoqi@0 109 protected element_value(int tag) {
aoqi@0 110 this.tag = tag;
aoqi@0 111 }
aoqi@0 112
aoqi@0 113 public abstract int length();
aoqi@0 114
aoqi@0 115 public abstract <R,P> R accept(Visitor<R,P> visitor, P p);
aoqi@0 116
aoqi@0 117 public interface Visitor<R,P> {
aoqi@0 118 R visitPrimitive(Primitive_element_value ev, P p);
aoqi@0 119 R visitEnum(Enum_element_value ev, P p);
aoqi@0 120 R visitClass(Class_element_value ev, P p);
aoqi@0 121 R visitAnnotation(Annotation_element_value ev, P p);
aoqi@0 122 R visitArray(Array_element_value ev, P p);
aoqi@0 123 }
aoqi@0 124
aoqi@0 125 public final int tag;
aoqi@0 126 }
aoqi@0 127
aoqi@0 128 public static class Primitive_element_value extends element_value {
aoqi@0 129 Primitive_element_value(ClassReader cr, int tag) throws IOException {
aoqi@0 130 super(tag);
aoqi@0 131 const_value_index = cr.readUnsignedShort();
aoqi@0 132 }
aoqi@0 133
aoqi@0 134 @Override
aoqi@0 135 public int length() {
aoqi@0 136 return 2;
aoqi@0 137 }
aoqi@0 138
aoqi@0 139 public <R,P> R accept(Visitor<R,P> visitor, P p) {
aoqi@0 140 return visitor.visitPrimitive(this, p);
aoqi@0 141 }
aoqi@0 142
aoqi@0 143 public final int const_value_index;
aoqi@0 144
aoqi@0 145 }
aoqi@0 146
aoqi@0 147 public static class Enum_element_value extends element_value {
aoqi@0 148 Enum_element_value(ClassReader cr, int tag) throws IOException {
aoqi@0 149 super(tag);
aoqi@0 150 type_name_index = cr.readUnsignedShort();
aoqi@0 151 const_name_index = cr.readUnsignedShort();
aoqi@0 152 }
aoqi@0 153
aoqi@0 154 @Override
aoqi@0 155 public int length() {
aoqi@0 156 return 4;
aoqi@0 157 }
aoqi@0 158
aoqi@0 159 public <R,P> R accept(Visitor<R,P> visitor, P p) {
aoqi@0 160 return visitor.visitEnum(this, p);
aoqi@0 161 }
aoqi@0 162
aoqi@0 163 public final int type_name_index;
aoqi@0 164 public final int const_name_index;
aoqi@0 165 }
aoqi@0 166
aoqi@0 167 public static class Class_element_value extends element_value {
aoqi@0 168 Class_element_value(ClassReader cr, int tag) throws IOException {
aoqi@0 169 super(tag);
aoqi@0 170 class_info_index = cr.readUnsignedShort();
aoqi@0 171 }
aoqi@0 172
aoqi@0 173 @Override
aoqi@0 174 public int length() {
aoqi@0 175 return 2;
aoqi@0 176 }
aoqi@0 177
aoqi@0 178 public <R,P> R accept(Visitor<R,P> visitor, P p) {
aoqi@0 179 return visitor.visitClass(this, p);
aoqi@0 180 }
aoqi@0 181
aoqi@0 182 public final int class_info_index;
aoqi@0 183 }
aoqi@0 184
aoqi@0 185 public static class Annotation_element_value extends element_value {
aoqi@0 186 Annotation_element_value(ClassReader cr, int tag)
aoqi@0 187 throws IOException, InvalidAnnotation {
aoqi@0 188 super(tag);
aoqi@0 189 annotation_value = new Annotation(cr);
aoqi@0 190 }
aoqi@0 191
aoqi@0 192 @Override
aoqi@0 193 public int length() {
aoqi@0 194 return annotation_value.length();
aoqi@0 195 }
aoqi@0 196
aoqi@0 197 public <R,P> R accept(Visitor<R,P> visitor, P p) {
aoqi@0 198 return visitor.visitAnnotation(this, p);
aoqi@0 199 }
aoqi@0 200
aoqi@0 201 public final Annotation annotation_value;
aoqi@0 202 }
aoqi@0 203
aoqi@0 204 public static class Array_element_value extends element_value {
aoqi@0 205 Array_element_value(ClassReader cr, int tag)
aoqi@0 206 throws IOException, InvalidAnnotation {
aoqi@0 207 super(tag);
aoqi@0 208 num_values = cr.readUnsignedShort();
aoqi@0 209 values = new element_value[num_values];
aoqi@0 210 for (int i = 0; i < values.length; i++)
aoqi@0 211 values[i] = element_value.read(cr);
aoqi@0 212 }
aoqi@0 213
aoqi@0 214 @Override
aoqi@0 215 public int length() {
aoqi@0 216 int n = 2;
aoqi@0 217 for (int i = 0; i < values.length; i++)
aoqi@0 218 n += values[i].length();
aoqi@0 219 return n;
aoqi@0 220 }
aoqi@0 221
aoqi@0 222 public <R,P> R accept(Visitor<R,P> visitor, P p) {
aoqi@0 223 return visitor.visitArray(this, p);
aoqi@0 224 }
aoqi@0 225
aoqi@0 226 public final int num_values;
aoqi@0 227 public final element_value[] values;
aoqi@0 228 }
aoqi@0 229
aoqi@0 230 public static class element_value_pair {
aoqi@0 231 element_value_pair(ClassReader cr)
aoqi@0 232 throws IOException, InvalidAnnotation {
aoqi@0 233 element_name_index = cr.readUnsignedShort();
aoqi@0 234 value = element_value.read(cr);
aoqi@0 235 }
aoqi@0 236
aoqi@0 237 public int length() {
aoqi@0 238 return 2 + value.length();
aoqi@0 239 }
aoqi@0 240
aoqi@0 241 public final int element_name_index;
aoqi@0 242 public final element_value value;
aoqi@0 243 }
aoqi@0 244 }

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