Mercurial > jdk8-mips64-public > langtools / annotate

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

src/share/classes/com/sun/tools/classfile/Signature.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, 2008, 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.util.ArrayList;
aoqi@0 29 import java.util.List;
aoqi@0 30 import com.sun.tools.classfile.Type.*;
aoqi@0 31
aoqi@0 32 /**
aoqi@0 33 * See JVMS 4.4.4.
aoqi@0 34 *
aoqi@0 35 * <p><b>This is NOT part of any supported API.
aoqi@0 36 * If you write code that depends on this, you do so at your own risk.
aoqi@0 37 * This code and its internal interfaces are subject to change or
aoqi@0 38 * deletion without notice.</b>
aoqi@0 39 */
aoqi@0 40 public class Signature extends Descriptor {
aoqi@0 41
aoqi@0 42 public Signature(int index) {
aoqi@0 43 super(index);
aoqi@0 44 }
aoqi@0 45
aoqi@0 46 public Type getType(ConstantPool constant_pool) throws ConstantPoolException {
aoqi@0 47 if (type == null)
aoqi@0 48 type = parse(getValue(constant_pool));
aoqi@0 49 return type;
aoqi@0 50 }
aoqi@0 51
aoqi@0 52 @Override
aoqi@0 53 public int getParameterCount(ConstantPool constant_pool) throws ConstantPoolException {
aoqi@0 54 MethodType m = (MethodType) getType(constant_pool);
aoqi@0 55 return m.paramTypes.size();
aoqi@0 56 }
aoqi@0 57
aoqi@0 58 @Override
aoqi@0 59 public String getParameterTypes(ConstantPool constant_pool) throws ConstantPoolException {
aoqi@0 60 MethodType m = (MethodType) getType(constant_pool);
aoqi@0 61 StringBuilder sb = new StringBuilder();
aoqi@0 62 sb.append("(");
aoqi@0 63 String sep = "";
aoqi@0 64 for (Type paramType: m.paramTypes) {
aoqi@0 65 sb.append(sep);
aoqi@0 66 sb.append(paramType);
aoqi@0 67 sep = ", ";
aoqi@0 68 }
aoqi@0 69 sb.append(")");
aoqi@0 70 return sb.toString();
aoqi@0 71 }
aoqi@0 72
aoqi@0 73 @Override
aoqi@0 74 public String getReturnType(ConstantPool constant_pool) throws ConstantPoolException {
aoqi@0 75 MethodType m = (MethodType) getType(constant_pool);
aoqi@0 76 return m.returnType.toString();
aoqi@0 77 }
aoqi@0 78
aoqi@0 79 @Override
aoqi@0 80 public String getFieldType(ConstantPool constant_pool) throws ConstantPoolException {
aoqi@0 81 return getType(constant_pool).toString();
aoqi@0 82 }
aoqi@0 83
aoqi@0 84 private Type parse(String sig) {
aoqi@0 85 this.sig = sig;
aoqi@0 86 sigp = 0;
aoqi@0 87
aoqi@0 88 List<TypeParamType> typeParamTypes = null;
aoqi@0 89 if (sig.charAt(sigp) == '<')
aoqi@0 90 typeParamTypes = parseTypeParamTypes();
aoqi@0 91
aoqi@0 92 if (sig.charAt(sigp) == '(') {
aoqi@0 93 List<Type> paramTypes = parseTypeSignatures(')');
aoqi@0 94 Type returnType = parseTypeSignature();
aoqi@0 95 List<Type> throwsTypes = null;
aoqi@0 96 while (sigp < sig.length() && sig.charAt(sigp) == '^') {
aoqi@0 97 sigp++;
aoqi@0 98 if (throwsTypes == null)
aoqi@0 99 throwsTypes = new ArrayList<Type>();
aoqi@0 100 throwsTypes.add(parseTypeSignature());
aoqi@0 101 }
aoqi@0 102 return new MethodType(typeParamTypes, paramTypes, returnType, throwsTypes);
aoqi@0 103 } else {
aoqi@0 104 Type t = parseTypeSignature();
aoqi@0 105 if (typeParamTypes == null && sigp == sig.length())
aoqi@0 106 return t;
aoqi@0 107 Type superclass = t;
aoqi@0 108 List<Type> superinterfaces = null;
aoqi@0 109 while (sigp < sig.length()) {
aoqi@0 110 if (superinterfaces == null)
aoqi@0 111 superinterfaces = new ArrayList<Type>();
aoqi@0 112 superinterfaces.add(parseTypeSignature());
aoqi@0 113 }
aoqi@0 114 return new ClassSigType(typeParamTypes, superclass, superinterfaces);
aoqi@0 115
aoqi@0 116 }
aoqi@0 117 }
aoqi@0 118
aoqi@0 119 private Type parseTypeSignature() {
aoqi@0 120 switch (sig.charAt(sigp)) {
aoqi@0 121 case 'B':
aoqi@0 122 sigp++;
aoqi@0 123 return new SimpleType("byte");
aoqi@0 124
aoqi@0 125 case 'C':
aoqi@0 126 sigp++;
aoqi@0 127 return new SimpleType("char");
aoqi@0 128
aoqi@0 129 case 'D':
aoqi@0 130 sigp++;
aoqi@0 131 return new SimpleType("double");
aoqi@0 132
aoqi@0 133 case 'F':
aoqi@0 134 sigp++;
aoqi@0 135 return new SimpleType("float");
aoqi@0 136
aoqi@0 137 case 'I':
aoqi@0 138 sigp++;
aoqi@0 139 return new SimpleType("int");
aoqi@0 140
aoqi@0 141 case 'J':
aoqi@0 142 sigp++;
aoqi@0 143 return new SimpleType("long");
aoqi@0 144
aoqi@0 145 case 'L':
aoqi@0 146 return parseClassTypeSignature();
aoqi@0 147
aoqi@0 148 case 'S':
aoqi@0 149 sigp++;
aoqi@0 150 return new SimpleType("short");
aoqi@0 151
aoqi@0 152 case 'T':
aoqi@0 153 return parseTypeVariableSignature();
aoqi@0 154
aoqi@0 155 case 'V':
aoqi@0 156 sigp++;
aoqi@0 157 return new SimpleType("void");
aoqi@0 158
aoqi@0 159 case 'Z':
aoqi@0 160 sigp++;
aoqi@0 161 return new SimpleType("boolean");
aoqi@0 162
aoqi@0 163 case '[':
aoqi@0 164 sigp++;
aoqi@0 165 return new ArrayType(parseTypeSignature());
aoqi@0 166
aoqi@0 167 case '*':
aoqi@0 168 sigp++;
aoqi@0 169 return new WildcardType();
aoqi@0 170
aoqi@0 171 case '+':
aoqi@0 172 sigp++;
aoqi@0 173 return new WildcardType(WildcardType.Kind.EXTENDS, parseTypeSignature());
aoqi@0 174
aoqi@0 175 case '-':
aoqi@0 176 sigp++;
aoqi@0 177 return new WildcardType(WildcardType.Kind.SUPER, parseTypeSignature());
aoqi@0 178
aoqi@0 179 default:
aoqi@0 180 throw new IllegalStateException(debugInfo());
aoqi@0 181 }
aoqi@0 182 }
aoqi@0 183
aoqi@0 184 private List<Type> parseTypeSignatures(char term) {
aoqi@0 185 sigp++;
aoqi@0 186 List<Type> types = new ArrayList<Type>();
aoqi@0 187 while (sig.charAt(sigp) != term)
aoqi@0 188 types.add(parseTypeSignature());
aoqi@0 189 sigp++;
aoqi@0 190 return types;
aoqi@0 191 }
aoqi@0 192
aoqi@0 193 private Type parseClassTypeSignature() {
aoqi@0 194 assert sig.charAt(sigp) == 'L';
aoqi@0 195 sigp++;
aoqi@0 196 return parseClassTypeSignatureRest();
aoqi@0 197 }
aoqi@0 198
aoqi@0 199 private Type parseClassTypeSignatureRest() {
aoqi@0 200 StringBuilder sb = new StringBuilder();
aoqi@0 201 List<Type> argTypes = null;
aoqi@0 202 ClassType t = null;
aoqi@0 203 char sigch ;
aoqi@0 204
aoqi@0 205 do {
aoqi@0 206 switch (sigch = sig.charAt(sigp)) {
aoqi@0 207 case '<':
aoqi@0 208 argTypes = parseTypeSignatures('>');
aoqi@0 209 break;
aoqi@0 210
aoqi@0 211 case '.':
aoqi@0 212 case ';':
aoqi@0 213 sigp++;
aoqi@0 214 t = new ClassType(t, sb.toString(), argTypes);
aoqi@0 215 sb.setLength(0);
aoqi@0 216 argTypes = null;
aoqi@0 217 break;
aoqi@0 218
aoqi@0 219 default:
aoqi@0 220 sigp++;
aoqi@0 221 sb.append(sigch);
aoqi@0 222 break;
aoqi@0 223 }
aoqi@0 224 } while (sigch != ';');
aoqi@0 225
aoqi@0 226 return t;
aoqi@0 227 }
aoqi@0 228
aoqi@0 229 private List<TypeParamType> parseTypeParamTypes() {
aoqi@0 230 assert sig.charAt(sigp) == '<';
aoqi@0 231 sigp++;
aoqi@0 232 List<TypeParamType> types = new ArrayList<TypeParamType>();
aoqi@0 233 while (sig.charAt(sigp) != '>')
aoqi@0 234 types.add(parseTypeParamType());
aoqi@0 235 sigp++;
aoqi@0 236 return types;
aoqi@0 237 }
aoqi@0 238
aoqi@0 239 private TypeParamType parseTypeParamType() {
aoqi@0 240 int sep = sig.indexOf(":", sigp);
aoqi@0 241 String name = sig.substring(sigp, sep);
aoqi@0 242 Type classBound = null;
aoqi@0 243 List<Type> interfaceBounds = null;
aoqi@0 244 sigp = sep + 1;
aoqi@0 245 if (sig.charAt(sigp) != ':')
aoqi@0 246 classBound = parseTypeSignature();
aoqi@0 247 while (sig.charAt(sigp) == ':') {
aoqi@0 248 sigp++;
aoqi@0 249 if (interfaceBounds == null)
aoqi@0 250 interfaceBounds = new ArrayList<Type>();
aoqi@0 251 interfaceBounds.add(parseTypeSignature());
aoqi@0 252 }
aoqi@0 253 return new TypeParamType(name, classBound, interfaceBounds);
aoqi@0 254 }
aoqi@0 255
aoqi@0 256 private Type parseTypeVariableSignature() {
aoqi@0 257 sigp++;
aoqi@0 258 int sep = sig.indexOf(';', sigp);
aoqi@0 259 Type t = new SimpleType(sig.substring(sigp, sep));
aoqi@0 260 sigp = sep + 1;
aoqi@0 261 return t;
aoqi@0 262 }
aoqi@0 263
aoqi@0 264 private String debugInfo() {
aoqi@0 265 return sig.substring(0, sigp) + "!" + sig.charAt(sigp) + "!" + sig.substring(sigp+1);
aoqi@0 266 }
aoqi@0 267
aoqi@0 268 private String sig;
aoqi@0 269 private int sigp;
aoqi@0 270
aoqi@0 271 private Type type;
aoqi@0 272 }

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