Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/classfile/AccessFlags.java@959103a6100f (annotated)

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

Wed, 27 Apr 2016 01:34:52 +0800

author
aoqi
date
Wed, 27 Apr 2016 01:34:52 +0800
changeset 0
959103a6100f
child 2525
2eb010b6cb22
permissions
-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

aoqi@0 1 /*
aoqi@0 2 * Copyright (c) 2007, 2013, 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 import java.util.LinkedHashSet;
aoqi@0 30 import java.util.Set;
aoqi@0 31
aoqi@0 32 /**
aoqi@0 33 * See JVMS, sections 4.2, 4.6, 4.7.
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 AccessFlags {
aoqi@0 41 public static final int ACC_PUBLIC = 0x0001; // class, inner, field, method
aoqi@0 42 public static final int ACC_PRIVATE = 0x0002; // inner, field, method
aoqi@0 43 public static final int ACC_PROTECTED = 0x0004; // inner, field, method
aoqi@0 44 public static final int ACC_STATIC = 0x0008; // inner, field, method
aoqi@0 45 public static final int ACC_FINAL = 0x0010; // class, inner, field, method
aoqi@0 46 public static final int ACC_SUPER = 0x0020; // class
aoqi@0 47 public static final int ACC_SYNCHRONIZED = 0x0020; // method
aoqi@0 48 public static final int ACC_VOLATILE = 0x0040; // field
aoqi@0 49 public static final int ACC_BRIDGE = 0x0040; // method
aoqi@0 50 public static final int ACC_TRANSIENT = 0x0080; // field
aoqi@0 51 public static final int ACC_VARARGS = 0x0080; // method
aoqi@0 52 public static final int ACC_NATIVE = 0x0100; // method
aoqi@0 53 public static final int ACC_INTERFACE = 0x0200; // class, inner
aoqi@0 54 public static final int ACC_ABSTRACT = 0x0400; // class, inner, method
aoqi@0 55 public static final int ACC_STRICT = 0x0800; // method
aoqi@0 56 public static final int ACC_SYNTHETIC = 0x1000; // class, inner, field, method
aoqi@0 57 public static final int ACC_ANNOTATION = 0x2000; // class, inner
aoqi@0 58 public static final int ACC_ENUM = 0x4000; // class, inner, field
aoqi@0 59 public static final int ACC_MANDATED = 0x8000; // class, inner, field, method
aoqi@0 60
aoqi@0 61 public static enum Kind { Class, InnerClass, Field, Method};
aoqi@0 62
aoqi@0 63 AccessFlags(ClassReader cr) throws IOException {
aoqi@0 64 this(cr.readUnsignedShort());
aoqi@0 65 }
aoqi@0 66
aoqi@0 67 public AccessFlags(int flags) {
aoqi@0 68 this.flags = flags;
aoqi@0 69 }
aoqi@0 70
aoqi@0 71 public AccessFlags ignore(int mask) {
aoqi@0 72 return new AccessFlags(flags & ~mask);
aoqi@0 73 }
aoqi@0 74
aoqi@0 75 public boolean is(int mask) {
aoqi@0 76 return (flags & mask) != 0;
aoqi@0 77 }
aoqi@0 78
aoqi@0 79 public int byteLength() {
aoqi@0 80 return 2;
aoqi@0 81 }
aoqi@0 82
aoqi@0 83 private static final int[] classModifiers = {
aoqi@0 84 ACC_PUBLIC, ACC_FINAL, ACC_ABSTRACT
aoqi@0 85 };
aoqi@0 86
aoqi@0 87 private static final int[] classFlags = {
aoqi@0 88 ACC_PUBLIC, ACC_FINAL, ACC_SUPER, ACC_INTERFACE, ACC_ABSTRACT,
aoqi@0 89 ACC_SYNTHETIC, ACC_ANNOTATION, ACC_ENUM
aoqi@0 90 };
aoqi@0 91
aoqi@0 92 public Set<String> getClassModifiers() {
aoqi@0 93 int f = ((flags & ACC_INTERFACE) != 0 ? flags & ~ACC_ABSTRACT : flags);
aoqi@0 94 return getModifiers(f, classModifiers, Kind.Class);
aoqi@0 95 }
aoqi@0 96
aoqi@0 97 public Set<String> getClassFlags() {
aoqi@0 98 return getFlags(classFlags, Kind.Class);
aoqi@0 99 }
aoqi@0 100
aoqi@0 101 private static final int[] innerClassModifiers = {
aoqi@0 102 ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
aoqi@0 103 ACC_ABSTRACT
aoqi@0 104 };
aoqi@0 105
aoqi@0 106 private static final int[] innerClassFlags = {
aoqi@0 107 ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL, ACC_SUPER,
aoqi@0 108 ACC_INTERFACE, ACC_ABSTRACT, ACC_SYNTHETIC, ACC_ANNOTATION, ACC_ENUM
aoqi@0 109 };
aoqi@0 110
aoqi@0 111 public Set<String> getInnerClassModifiers() {
aoqi@0 112 int f = ((flags & ACC_INTERFACE) != 0 ? flags & ~ACC_ABSTRACT : flags);
aoqi@0 113 return getModifiers(f, innerClassModifiers, Kind.InnerClass);
aoqi@0 114 }
aoqi@0 115
aoqi@0 116 public Set<String> getInnerClassFlags() {
aoqi@0 117 return getFlags(innerClassFlags, Kind.InnerClass);
aoqi@0 118 }
aoqi@0 119
aoqi@0 120 private static final int[] fieldModifiers = {
aoqi@0 121 ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
aoqi@0 122 ACC_VOLATILE, ACC_TRANSIENT
aoqi@0 123 };
aoqi@0 124
aoqi@0 125 private static final int[] fieldFlags = {
aoqi@0 126 ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
aoqi@0 127 ACC_VOLATILE, ACC_TRANSIENT, ACC_SYNTHETIC, ACC_ENUM
aoqi@0 128 };
aoqi@0 129
aoqi@0 130 public Set<String> getFieldModifiers() {
aoqi@0 131 return getModifiers(fieldModifiers, Kind.Field);
aoqi@0 132 }
aoqi@0 133
aoqi@0 134 public Set<String> getFieldFlags() {
aoqi@0 135 return getFlags(fieldFlags, Kind.Field);
aoqi@0 136 }
aoqi@0 137
aoqi@0 138 private static final int[] methodModifiers = {
aoqi@0 139 ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
aoqi@0 140 ACC_SYNCHRONIZED, ACC_NATIVE, ACC_ABSTRACT, ACC_STRICT
aoqi@0 141 };
aoqi@0 142
aoqi@0 143 private static final int[] methodFlags = {
aoqi@0 144 ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
aoqi@0 145 ACC_SYNCHRONIZED, ACC_BRIDGE, ACC_VARARGS, ACC_NATIVE, ACC_ABSTRACT,
aoqi@0 146 ACC_STRICT, ACC_SYNTHETIC
aoqi@0 147 };
aoqi@0 148
aoqi@0 149 public Set<String> getMethodModifiers() {
aoqi@0 150 return getModifiers(methodModifiers, Kind.Method);
aoqi@0 151 }
aoqi@0 152
aoqi@0 153 public Set<String> getMethodFlags() {
aoqi@0 154 return getFlags(methodFlags, Kind.Method);
aoqi@0 155 }
aoqi@0 156
aoqi@0 157 private Set<String> getModifiers(int[] modifierFlags, Kind t) {
aoqi@0 158 return getModifiers(flags, modifierFlags, t);
aoqi@0 159 }
aoqi@0 160
aoqi@0 161 private static Set<String> getModifiers(int flags, int[] modifierFlags, Kind t) {
aoqi@0 162 Set<String> s = new LinkedHashSet<String>();
aoqi@0 163 for (int m: modifierFlags) {
aoqi@0 164 if ((flags & m) != 0)
aoqi@0 165 s.add(flagToModifier(m, t));
aoqi@0 166 }
aoqi@0 167 return s;
aoqi@0 168 }
aoqi@0 169
aoqi@0 170 private Set<String> getFlags(int[] expectedFlags, Kind t) {
aoqi@0 171 Set<String> s = new LinkedHashSet<String>();
aoqi@0 172 int f = flags;
aoqi@0 173 for (int e: expectedFlags) {
aoqi@0 174 if ((f & e) != 0) {
aoqi@0 175 s.add(flagToName(e, t));
aoqi@0 176 f = f & ~e;
aoqi@0 177 }
aoqi@0 178 }
aoqi@0 179 while (f != 0) {
aoqi@0 180 int bit = Integer.highestOneBit(f);
aoqi@0 181 s.add("0x" + Integer.toHexString(bit));
aoqi@0 182 f = f & ~bit;
aoqi@0 183 }
aoqi@0 184 return s;
aoqi@0 185 }
aoqi@0 186
aoqi@0 187 private static String flagToModifier(int flag, Kind t) {
aoqi@0 188 switch (flag) {
aoqi@0 189 case ACC_PUBLIC:
aoqi@0 190 return "public";
aoqi@0 191 case ACC_PRIVATE:
aoqi@0 192 return "private";
aoqi@0 193 case ACC_PROTECTED:
aoqi@0 194 return "protected";
aoqi@0 195 case ACC_STATIC:
aoqi@0 196 return "static";
aoqi@0 197 case ACC_FINAL:
aoqi@0 198 return "final";
aoqi@0 199 case ACC_SYNCHRONIZED:
aoqi@0 200 return "synchronized";
aoqi@0 201 case 0x80:
aoqi@0 202 return (t == Kind.Field ? "transient" : null);
aoqi@0 203 case ACC_VOLATILE:
aoqi@0 204 return "volatile";
aoqi@0 205 case ACC_NATIVE:
aoqi@0 206 return "native";
aoqi@0 207 case ACC_ABSTRACT:
aoqi@0 208 return "abstract";
aoqi@0 209 case ACC_STRICT:
aoqi@0 210 return "strictfp";
aoqi@0 211 case ACC_MANDATED:
aoqi@0 212 return "mandated";
aoqi@0 213 default:
aoqi@0 214 return null;
aoqi@0 215 }
aoqi@0 216 }
aoqi@0 217
aoqi@0 218 private static String flagToName(int flag, Kind t) {
aoqi@0 219 switch (flag) {
aoqi@0 220 case ACC_PUBLIC:
aoqi@0 221 return "ACC_PUBLIC";
aoqi@0 222 case ACC_PRIVATE:
aoqi@0 223 return "ACC_PRIVATE";
aoqi@0 224 case ACC_PROTECTED:
aoqi@0 225 return "ACC_PROTECTED";
aoqi@0 226 case ACC_STATIC:
aoqi@0 227 return "ACC_STATIC";
aoqi@0 228 case ACC_FINAL:
aoqi@0 229 return "ACC_FINAL";
aoqi@0 230 case 0x20:
aoqi@0 231 return (t == Kind.Class ? "ACC_SUPER" : "ACC_SYNCHRONIZED");
aoqi@0 232 case 0x40:
aoqi@0 233 return (t == Kind.Field ? "ACC_VOLATILE" : "ACC_BRIDGE");
aoqi@0 234 case 0x80:
aoqi@0 235 return (t == Kind.Field ? "ACC_TRANSIENT" : "ACC_VARARGS");
aoqi@0 236 case ACC_NATIVE:
aoqi@0 237 return "ACC_NATIVE";
aoqi@0 238 case ACC_INTERFACE:
aoqi@0 239 return "ACC_INTERFACE";
aoqi@0 240 case ACC_ABSTRACT:
aoqi@0 241 return "ACC_ABSTRACT";
aoqi@0 242 case ACC_STRICT:
aoqi@0 243 return "ACC_STRICT";
aoqi@0 244 case ACC_SYNTHETIC:
aoqi@0 245 return "ACC_SYNTHETIC";
aoqi@0 246 case ACC_ANNOTATION:
aoqi@0 247 return "ACC_ANNOTATION";
aoqi@0 248 case ACC_ENUM:
aoqi@0 249 return "ACC_ENUM";
aoqi@0 250 case ACC_MANDATED:
aoqi@0 251 return "ACC_MANDATED";
aoqi@0 252 default:
aoqi@0 253 return null;
aoqi@0 254 }
aoqi@0 255 }
aoqi@0 256
aoqi@0 257 public final int flags;
aoqi@0 258 }

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