1.1 --- a/rt/emul/compact/src/main/java/sun/invoke/anon/ConstantPoolVisitor.java Sun Aug 10 05:56:32 2014 +0200
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,192 +0,0 @@
1.4 -/*
1.5 - * Copyright (c) 2008, 2011, Oracle and/or its affiliates. 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. Oracle designates this
1.11 - * particular file as subject to the "Classpath" exception as provided
1.12 - * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 - * or visit www.oracle.com if you need additional information or have any
1.26 - * questions.
1.27 - */
1.28 -
1.29 -package sun.invoke.anon;
1.30 -
1.31 -/**
1.32 - * A visitor called by {@link ConstantPoolParser#parse(ConstantPoolVisitor)}
1.33 - * when a constant pool entry is parsed.
1.34 - * <p>
1.35 - * A visit* method is called when a constant pool entry is parsed.
1.36 - * The first argument is always the constant pool index.
1.37 - * The second argument is always the constant pool tag,
1.38 - * even for methods like {@link #visitUTF8(int, byte, String)} which only apply to one tag.
1.39 - * String arguments refer to Utf8 or NameAndType entries declared elsewhere,
1.40 - * and are always accompanied by the indexes of those entries.
1.41 - * <p>
1.42 - * The order of the calls to the visit* methods is not necessarily related
1.43 - * to the order of the entries in the constant pool.
1.44 - * If one entry has a reference to another entry, the latter (lower-level)
1.45 - * entry will be visited first.
1.46 - * <p>
1.47 - * The following table shows the relation between constant pool entry
1.48 - * types and the corresponding visit* methods:
1.49 - *
1.50 - * <table border=1 cellpadding=5 summary="constant pool visitor methods">
1.51 - * <tr><th>Tag(s)</th><th>Method</th></tr>
1.52 - * <tr>
1.53 - * <td>{@link #CONSTANT_Utf8}</td>
1.54 - * <td>{@link #visitUTF8(int, byte, String)}</td>
1.55 - * </tr><tr>
1.56 - * <td>{@link #CONSTANT_Integer}, {@link #CONSTANT_Float},
1.57 - * {@link #CONSTANT_Long}, {@link #CONSTANT_Double}</td>
1.58 - * <td>{@link #visitConstantValue(int, byte, Object)}</td>
1.59 - * </tr><tr>
1.60 - * <td>{@link #CONSTANT_String}, {@link #CONSTANT_Class}</td>
1.61 - * <td>{@link #visitConstantString(int, byte, String, int)}</td>
1.62 - * </tr><tr>
1.63 - * <td>{@link #CONSTANT_NameAndType}</td>
1.64 - * <td>{@link #visitDescriptor(int, byte, String, String, int, int)}</td>
1.65 - * </tr><tr>
1.66 - * <td>{@link #CONSTANT_Fieldref},
1.67 - * {@link #CONSTANT_Methodref},
1.68 - * {@link #CONSTANT_InterfaceMethodref}</td>
1.69 - * <td>{@link #visitMemberRef(int, byte, String, String, String, int, int)}</td>
1.70 - * </tr>
1.71 - * </table>
1.72 - *
1.73 - * @see ConstantPoolPatch
1.74 - * @author Remi Forax
1.75 - * @author jrose
1.76 - */
1.77 -public class ConstantPoolVisitor {
1.78 - /** Called each time an UTF8 constant pool entry is found.
1.79 - * @param index the constant pool index
1.80 - * @param tag always {@link #CONSTANT_Utf8}
1.81 - * @param utf8 string encoded in modified UTF-8 format passed as a {@code String}
1.82 - *
1.83 - * @see ConstantPoolPatch#putUTF8(int, String)
1.84 - */
1.85 - public void visitUTF8(int index, byte tag, String utf8) {
1.86 - // do nothing
1.87 - }
1.88 -
1.89 - /** Called for each constant pool entry that encodes an integer,
1.90 - * a float, a long, or a double.
1.91 - * Constant strings and classes are not managed by this method but
1.92 - * by {@link #visitConstantString(int, byte, String, int)}.
1.93 - *
1.94 - * @param index the constant pool index
1.95 - * @param tag one of {@link #CONSTANT_Integer},
1.96 - * {@link #CONSTANT_Float},
1.97 - * {@link #CONSTANT_Long},
1.98 - * or {@link #CONSTANT_Double}
1.99 - * @param value encoded value
1.100 - *
1.101 - * @see ConstantPoolPatch#putConstantValue(int, Object)
1.102 - */
1.103 - public void visitConstantValue(int index, byte tag, Object value) {
1.104 - // do nothing
1.105 - }
1.106 -
1.107 - /** Called for each constant pool entry that encodes a string or a class.
1.108 - * @param index the constant pool index
1.109 - * @param tag one of {@link #CONSTANT_String},
1.110 - * {@link #CONSTANT_Class},
1.111 - * @param name string body or class name (using dot separator)
1.112 - * @param nameIndex the index of the Utf8 string for the name
1.113 - *
1.114 - * @see ConstantPoolPatch#putConstantValue(int, byte, Object)
1.115 - */
1.116 - public void visitConstantString(int index, byte tag,
1.117 - String name, int nameIndex) {
1.118 - // do nothing
1.119 - }
1.120 -
1.121 - /** Called for each constant pool entry that encodes a name and type.
1.122 - * @param index the constant pool index
1.123 - * @param tag always {@link #CONSTANT_NameAndType}
1.124 - * @param memberName a field or method name
1.125 - * @param signature the member signature
1.126 - * @param memberNameIndex index of the Utf8 string for the member name
1.127 - * @param signatureIndex index of the Utf8 string for the signature
1.128 - *
1.129 - * @see ConstantPoolPatch#putDescriptor(int, String, String)
1.130 - */
1.131 - public void visitDescriptor(int index, byte tag,
1.132 - String memberName, String signature,
1.133 - int memberNameIndex, int signatureIndex) {
1.134 - // do nothing
1.135 - }
1.136 -
1.137 - /** Called for each constant pool entry that encodes a field or method.
1.138 - * @param index the constant pool index
1.139 - * @param tag one of {@link #CONSTANT_Fieldref},
1.140 - * or {@link #CONSTANT_Methodref},
1.141 - * or {@link #CONSTANT_InterfaceMethodref}
1.142 - * @param className the class name (using dot separator)
1.143 - * @param memberName name of the field or method
1.144 - * @param signature the field or method signature
1.145 - * @param classNameIndex index of the Utf8 string for the class name
1.146 - * @param descriptorIndex index of the NameAndType descriptor constant
1.147 - *
1.148 - * @see ConstantPoolPatch#putMemberRef(int, byte, String, String, String)
1.149 - */
1.150 - public void visitMemberRef(int index, byte tag,
1.151 - String className, String memberName, String signature,
1.152 - int classNameIndex, int descriptorIndex) {
1.153 - // do nothing
1.154 - }
1.155 -
1.156 - public static final byte
1.157 - CONSTANT_None = 0,
1.158 - CONSTANT_Utf8 = 1,
1.159 - //CONSTANT_Unicode = 2, /* unused */
1.160 - CONSTANT_Integer = 3,
1.161 - CONSTANT_Float = 4,
1.162 - CONSTANT_Long = 5,
1.163 - CONSTANT_Double = 6,
1.164 - CONSTANT_Class = 7,
1.165 - CONSTANT_String = 8,
1.166 - CONSTANT_Fieldref = 9,
1.167 - CONSTANT_Methodref = 10,
1.168 - CONSTANT_InterfaceMethodref = 11,
1.169 - CONSTANT_NameAndType = 12;
1.170 -
1.171 - private static String[] TAG_NAMES = {
1.172 - "Empty",
1.173 - "Utf8",
1.174 - null, //"Unicode",
1.175 - "Integer",
1.176 - "Float",
1.177 - "Long",
1.178 - "Double",
1.179 - "Class",
1.180 - "String",
1.181 - "Fieldref",
1.182 - "Methodref",
1.183 - "InterfaceMethodref",
1.184 - "NameAndType"
1.185 - };
1.186 -
1.187 - public static String tagName(byte tag) {
1.188 - String name = null;
1.189 - if ((tag & 0xFF) < TAG_NAMES.length)
1.190 - name = TAG_NAMES[tag];
1.191 - if (name == null)
1.192 - name = "Unknown#"+(tag&0xFF);
1.193 - return name;
1.194 - }
1.195 -}