1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/com/sun/tools/classfile/Annotation.java Tue Jun 03 13:26:47 2008 -0700
1.3 @@ -0,0 +1,243 @@
1.4 +/*
1.5 + * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Sun designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Sun in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.25 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.26 + * have any questions.
1.27 + */
1.28 +
1.29 +package com.sun.tools.classfile;
1.30 +
1.31 +import java.io.IOException;
1.32 +
1.33 +/**
1.34 + * See JVMS3, section 4.8.16.
1.35 + *
1.36 + * <p><b>This is NOT part of any API supported by Sun Microsystems. If
1.37 + * you write code that depends on this, you do so at your own risk.
1.38 + * This code and its internal interfaces are subject to change or
1.39 + * deletion without notice.</b>
1.40 + */
1.41 +public class Annotation {
1.42 + static class InvalidAnnotation extends AttributeException {
1.43 + InvalidAnnotation(String msg) {
1.44 + super(msg);
1.45 + }
1.46 + }
1.47 +
1.48 + Annotation(ClassReader cr) throws IOException, InvalidAnnotation {
1.49 + type_index = cr.readUnsignedShort();
1.50 + num_element_value_pairs = cr.readUnsignedShort();
1.51 + element_value_pairs = new element_value_pair[num_element_value_pairs];
1.52 + for (int i = 0; i < element_value_pairs.length; i++)
1.53 + element_value_pairs[i] = new element_value_pair(cr);
1.54 + }
1.55 +
1.56 + public Annotation(ConstantPool constant_pool,
1.57 + int type_index,
1.58 + element_value_pair[] element_value_pairs) {
1.59 + this.type_index = type_index;
1.60 + num_element_value_pairs = element_value_pairs.length;
1.61 + this.element_value_pairs = element_value_pairs;
1.62 + }
1.63 +
1.64 + public int length() {
1.65 + int n = 2 /*type_index*/ + 2 /*num_element_value_pairs*/;
1.66 + for (element_value_pair pair: element_value_pairs)
1.67 + n += pair.length();
1.68 + return n;
1.69 + }
1.70 +
1.71 + public final int type_index;
1.72 + public final int num_element_value_pairs;
1.73 + public final element_value_pair element_value_pairs[];
1.74 +
1.75 + /**
1.76 + * See JVMS3, section 4.8.16.1.
1.77 + */
1.78 + public static abstract class element_value {
1.79 + public static element_value read(ClassReader cr)
1.80 + throws IOException, InvalidAnnotation {
1.81 + int tag = cr.readUnsignedByte();
1.82 + switch (tag) {
1.83 + case 'B':
1.84 + case 'C':
1.85 + case 'D':
1.86 + case 'F':
1.87 + case 'I':
1.88 + case 'J':
1.89 + case 'S':
1.90 + case 'Z':
1.91 + case 's':
1.92 + return new Primitive_element_value(cr, tag);
1.93 +
1.94 + case 'e':
1.95 + return new Enum_element_value(cr, tag);
1.96 +
1.97 + case 'c':
1.98 + return new Class_element_value(cr, tag);
1.99 +
1.100 + case '@':
1.101 + return new Annotation_element_value(cr, tag);
1.102 +
1.103 + case '[':
1.104 + return new Array_element_value(cr, tag);
1.105 +
1.106 + default:
1.107 + throw new InvalidAnnotation("unrecognized tag: " + tag);
1.108 + }
1.109 + }
1.110 +
1.111 + protected element_value(int tag) {
1.112 + this.tag = tag;
1.113 + }
1.114 +
1.115 + public abstract int length();
1.116 +
1.117 + public abstract <R,P> R accept(Visitor<R,P> visitor, P p);
1.118 +
1.119 + public interface Visitor<R,P> {
1.120 + R visitPrimitive(Primitive_element_value ev, P p);
1.121 + R visitEnum(Enum_element_value ev, P p);
1.122 + R visitClass(Class_element_value ev, P p);
1.123 + R visitAnnotation(Annotation_element_value ev, P p);
1.124 + R visitArray(Array_element_value ev, P p);
1.125 + }
1.126 +
1.127 + public final int tag;
1.128 + }
1.129 +
1.130 + public static class Primitive_element_value extends element_value {
1.131 + Primitive_element_value(ClassReader cr, int tag) throws IOException {
1.132 + super(tag);
1.133 + const_value_index = cr.readUnsignedShort();
1.134 + }
1.135 +
1.136 + @Override
1.137 + public int length() {
1.138 + return 2;
1.139 + }
1.140 +
1.141 + public <R,P> R accept(Visitor<R,P> visitor, P p) {
1.142 + return visitor.visitPrimitive(this, p);
1.143 + }
1.144 +
1.145 + public final int const_value_index;
1.146 +
1.147 + }
1.148 +
1.149 + public static class Enum_element_value extends element_value {
1.150 + Enum_element_value(ClassReader cr, int tag) throws IOException {
1.151 + super(tag);
1.152 + type_name_index = cr.readUnsignedShort();
1.153 + const_name_index = cr.readUnsignedShort();
1.154 + }
1.155 +
1.156 + @Override
1.157 + public int length() {
1.158 + return 4;
1.159 + }
1.160 +
1.161 + public <R,P> R accept(Visitor<R,P> visitor, P p) {
1.162 + return visitor.visitEnum(this, p);
1.163 + }
1.164 +
1.165 + public final int type_name_index;
1.166 + public final int const_name_index;
1.167 + }
1.168 +
1.169 + public static class Class_element_value extends element_value {
1.170 + Class_element_value(ClassReader cr, int tag) throws IOException {
1.171 + super(tag);
1.172 + class_info_index = cr.readUnsignedShort();
1.173 + }
1.174 +
1.175 + @Override
1.176 + public int length() {
1.177 + return 2;
1.178 + }
1.179 +
1.180 + public <R,P> R accept(Visitor<R,P> visitor, P p) {
1.181 + return visitor.visitClass(this, p);
1.182 + }
1.183 +
1.184 + public final int class_info_index;
1.185 + }
1.186 +
1.187 + public static class Annotation_element_value extends element_value {
1.188 + Annotation_element_value(ClassReader cr, int tag)
1.189 + throws IOException, InvalidAnnotation {
1.190 + super(tag);
1.191 + annotation_value = new Annotation(cr);
1.192 + }
1.193 +
1.194 + @Override
1.195 + public int length() {
1.196 + return annotation_value.length();
1.197 + }
1.198 +
1.199 + public <R,P> R accept(Visitor<R,P> visitor, P p) {
1.200 + return visitor.visitAnnotation(this, p);
1.201 + }
1.202 +
1.203 + public final Annotation annotation_value;
1.204 + }
1.205 +
1.206 + public static class Array_element_value extends element_value {
1.207 + Array_element_value(ClassReader cr, int tag)
1.208 + throws IOException, InvalidAnnotation {
1.209 + super(tag);
1.210 + num_values = cr.readUnsignedShort();
1.211 + values = new element_value[num_values];
1.212 + for (int i = 0; i < values.length; i++)
1.213 + values[i] = element_value.read(cr);
1.214 + }
1.215 +
1.216 + @Override
1.217 + public int length() {
1.218 + int n = 2;
1.219 + for (int i = 0; i < values.length; i++)
1.220 + n += values[i].length();
1.221 + return n;
1.222 + }
1.223 +
1.224 + public <R,P> R accept(Visitor<R,P> visitor, P p) {
1.225 + return visitor.visitArray(this, p);
1.226 + }
1.227 +
1.228 + public final int num_values;
1.229 + public final element_value[] values;
1.230 + }
1.231 +
1.232 + public static class element_value_pair {
1.233 + element_value_pair(ClassReader cr)
1.234 + throws IOException, InvalidAnnotation {
1.235 + element_name_index = cr.readUnsignedShort();
1.236 + value = element_value.read(cr);
1.237 + }
1.238 +
1.239 + public int length() {
1.240 + return 2 + value.length();
1.241 + }
1.242 +
1.243 + public final int element_name_index;
1.244 + public final element_value value;
1.245 + }
1.246 +}
