aoqi@0: /*
aoqi@0: * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0: *
aoqi@0: * This code is free software; you can redistribute it and/or modify it
aoqi@0: * under the terms of the GNU General Public License version 2 only, as
aoqi@0: * published by the Free Software Foundation. Oracle designates this
aoqi@0: * particular file as subject to the "Classpath" exception as provided
aoqi@0: * by Oracle in the LICENSE file that accompanied this code.
aoqi@0: *
aoqi@0: * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0: * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0: * accompanied this code).
aoqi@0: *
aoqi@0: * You should have received a copy of the GNU General Public License version
aoqi@0: * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0: *
aoqi@0: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0: * or visit www.oracle.com if you need additional information or have any
aoqi@0: * questions.
aoqi@0: */
aoqi@0:
aoqi@0: package com.sun.tools.classfile;
aoqi@0:
aoqi@0: import java.io.IOException;
aoqi@0: import java.util.LinkedHashSet;
aoqi@0: import java.util.Set;
aoqi@0:
aoqi@0: /**
aoqi@0: * See JVMS, sections 4.2, 4.6, 4.7.
aoqi@0: *
aoqi@0: *
This is NOT part of any supported API.
aoqi@0: * If you write code that depends on this, you do so at your own risk.
aoqi@0: * This code and its internal interfaces are subject to change or
aoqi@0: * deletion without notice.
aoqi@0: */
aoqi@0: public class AccessFlags {
aoqi@0: public static final int ACC_PUBLIC = 0x0001; // class, inner, field, method
aoqi@0: public static final int ACC_PRIVATE = 0x0002; // inner, field, method
aoqi@0: public static final int ACC_PROTECTED = 0x0004; // inner, field, method
aoqi@0: public static final int ACC_STATIC = 0x0008; // inner, field, method
aoqi@0: public static final int ACC_FINAL = 0x0010; // class, inner, field, method
aoqi@0: public static final int ACC_SUPER = 0x0020; // class
aoqi@0: public static final int ACC_SYNCHRONIZED = 0x0020; // method
aoqi@0: public static final int ACC_VOLATILE = 0x0040; // field
aoqi@0: public static final int ACC_BRIDGE = 0x0040; // method
aoqi@0: public static final int ACC_TRANSIENT = 0x0080; // field
aoqi@0: public static final int ACC_VARARGS = 0x0080; // method
aoqi@0: public static final int ACC_NATIVE = 0x0100; // method
aoqi@0: public static final int ACC_INTERFACE = 0x0200; // class, inner
aoqi@0: public static final int ACC_ABSTRACT = 0x0400; // class, inner, method
aoqi@0: public static final int ACC_STRICT = 0x0800; // method
aoqi@0: public static final int ACC_SYNTHETIC = 0x1000; // class, inner, field, method
aoqi@0: public static final int ACC_ANNOTATION = 0x2000; // class, inner
aoqi@0: public static final int ACC_ENUM = 0x4000; // class, inner, field
aoqi@0: public static final int ACC_MANDATED = 0x8000; // class, inner, field, method
aoqi@0:
aoqi@0: public static enum Kind { Class, InnerClass, Field, Method};
aoqi@0:
aoqi@0: AccessFlags(ClassReader cr) throws IOException {
aoqi@0: this(cr.readUnsignedShort());
aoqi@0: }
aoqi@0:
aoqi@0: public AccessFlags(int flags) {
aoqi@0: this.flags = flags;
aoqi@0: }
aoqi@0:
aoqi@0: public AccessFlags ignore(int mask) {
aoqi@0: return new AccessFlags(flags & ~mask);
aoqi@0: }
aoqi@0:
aoqi@0: public boolean is(int mask) {
aoqi@0: return (flags & mask) != 0;
aoqi@0: }
aoqi@0:
aoqi@0: public int byteLength() {
aoqi@0: return 2;
aoqi@0: }
aoqi@0:
aoqi@0: private static final int[] classModifiers = {
aoqi@0: ACC_PUBLIC, ACC_FINAL, ACC_ABSTRACT
aoqi@0: };
aoqi@0:
aoqi@0: private static final int[] classFlags = {
aoqi@0: ACC_PUBLIC, ACC_FINAL, ACC_SUPER, ACC_INTERFACE, ACC_ABSTRACT,
aoqi@0: ACC_SYNTHETIC, ACC_ANNOTATION, ACC_ENUM
aoqi@0: };
aoqi@0:
aoqi@0: public Set getClassModifiers() {
aoqi@0: int f = ((flags & ACC_INTERFACE) != 0 ? flags & ~ACC_ABSTRACT : flags);
aoqi@0: return getModifiers(f, classModifiers, Kind.Class);
aoqi@0: }
aoqi@0:
aoqi@0: public Set getClassFlags() {
aoqi@0: return getFlags(classFlags, Kind.Class);
aoqi@0: }
aoqi@0:
aoqi@0: private static final int[] innerClassModifiers = {
aoqi@0: ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
aoqi@0: ACC_ABSTRACT
aoqi@0: };
aoqi@0:
aoqi@0: private static final int[] innerClassFlags = {
aoqi@0: ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL, ACC_SUPER,
aoqi@0: ACC_INTERFACE, ACC_ABSTRACT, ACC_SYNTHETIC, ACC_ANNOTATION, ACC_ENUM
aoqi@0: };
aoqi@0:
aoqi@0: public Set getInnerClassModifiers() {
aoqi@0: int f = ((flags & ACC_INTERFACE) != 0 ? flags & ~ACC_ABSTRACT : flags);
aoqi@0: return getModifiers(f, innerClassModifiers, Kind.InnerClass);
aoqi@0: }
aoqi@0:
aoqi@0: public Set getInnerClassFlags() {
aoqi@0: return getFlags(innerClassFlags, Kind.InnerClass);
aoqi@0: }
aoqi@0:
aoqi@0: private static final int[] fieldModifiers = {
aoqi@0: ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
aoqi@0: ACC_VOLATILE, ACC_TRANSIENT
aoqi@0: };
aoqi@0:
aoqi@0: private static final int[] fieldFlags = {
aoqi@0: ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
aoqi@0: ACC_VOLATILE, ACC_TRANSIENT, ACC_SYNTHETIC, ACC_ENUM
aoqi@0: };
aoqi@0:
aoqi@0: public Set getFieldModifiers() {
aoqi@0: return getModifiers(fieldModifiers, Kind.Field);
aoqi@0: }
aoqi@0:
aoqi@0: public Set getFieldFlags() {
aoqi@0: return getFlags(fieldFlags, Kind.Field);
aoqi@0: }
aoqi@0:
aoqi@0: private static final int[] methodModifiers = {
aoqi@0: ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
aoqi@0: ACC_SYNCHRONIZED, ACC_NATIVE, ACC_ABSTRACT, ACC_STRICT
aoqi@0: };
aoqi@0:
aoqi@0: private static final int[] methodFlags = {
aoqi@0: ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
aoqi@0: ACC_SYNCHRONIZED, ACC_BRIDGE, ACC_VARARGS, ACC_NATIVE, ACC_ABSTRACT,
aoqi@0: ACC_STRICT, ACC_SYNTHETIC
aoqi@0: };
aoqi@0:
aoqi@0: public Set getMethodModifiers() {
aoqi@0: return getModifiers(methodModifiers, Kind.Method);
aoqi@0: }
aoqi@0:
aoqi@0: public Set getMethodFlags() {
aoqi@0: return getFlags(methodFlags, Kind.Method);
aoqi@0: }
aoqi@0:
aoqi@0: private Set getModifiers(int[] modifierFlags, Kind t) {
aoqi@0: return getModifiers(flags, modifierFlags, t);
aoqi@0: }
aoqi@0:
aoqi@0: private static Set getModifiers(int flags, int[] modifierFlags, Kind t) {
aoqi@0: Set s = new LinkedHashSet();
aoqi@0: for (int m: modifierFlags) {
aoqi@0: if ((flags & m) != 0)
aoqi@0: s.add(flagToModifier(m, t));
aoqi@0: }
aoqi@0: return s;
aoqi@0: }
aoqi@0:
aoqi@0: private Set getFlags(int[] expectedFlags, Kind t) {
aoqi@0: Set s = new LinkedHashSet();
aoqi@0: int f = flags;
aoqi@0: for (int e: expectedFlags) {
aoqi@0: if ((f & e) != 0) {
aoqi@0: s.add(flagToName(e, t));
aoqi@0: f = f & ~e;
aoqi@0: }
aoqi@0: }
aoqi@0: while (f != 0) {
aoqi@0: int bit = Integer.highestOneBit(f);
aoqi@0: s.add("0x" + Integer.toHexString(bit));
aoqi@0: f = f & ~bit;
aoqi@0: }
aoqi@0: return s;
aoqi@0: }
aoqi@0:
aoqi@0: private static String flagToModifier(int flag, Kind t) {
aoqi@0: switch (flag) {
aoqi@0: case ACC_PUBLIC:
aoqi@0: return "public";
aoqi@0: case ACC_PRIVATE:
aoqi@0: return "private";
aoqi@0: case ACC_PROTECTED:
aoqi@0: return "protected";
aoqi@0: case ACC_STATIC:
aoqi@0: return "static";
aoqi@0: case ACC_FINAL:
aoqi@0: return "final";
aoqi@0: case ACC_SYNCHRONIZED:
aoqi@0: return "synchronized";
aoqi@0: case 0x80:
aoqi@0: return (t == Kind.Field ? "transient" : null);
aoqi@0: case ACC_VOLATILE:
aoqi@0: return "volatile";
aoqi@0: case ACC_NATIVE:
aoqi@0: return "native";
aoqi@0: case ACC_ABSTRACT:
aoqi@0: return "abstract";
aoqi@0: case ACC_STRICT:
aoqi@0: return "strictfp";
aoqi@0: case ACC_MANDATED:
aoqi@0: return "mandated";
aoqi@0: default:
aoqi@0: return null;
aoqi@0: }
aoqi@0: }
aoqi@0:
aoqi@0: private static String flagToName(int flag, Kind t) {
aoqi@0: switch (flag) {
aoqi@0: case ACC_PUBLIC:
aoqi@0: return "ACC_PUBLIC";
aoqi@0: case ACC_PRIVATE:
aoqi@0: return "ACC_PRIVATE";
aoqi@0: case ACC_PROTECTED:
aoqi@0: return "ACC_PROTECTED";
aoqi@0: case ACC_STATIC:
aoqi@0: return "ACC_STATIC";
aoqi@0: case ACC_FINAL:
aoqi@0: return "ACC_FINAL";
aoqi@0: case 0x20:
aoqi@0: return (t == Kind.Class ? "ACC_SUPER" : "ACC_SYNCHRONIZED");
aoqi@0: case 0x40:
aoqi@0: return (t == Kind.Field ? "ACC_VOLATILE" : "ACC_BRIDGE");
aoqi@0: case 0x80:
aoqi@0: return (t == Kind.Field ? "ACC_TRANSIENT" : "ACC_VARARGS");
aoqi@0: case ACC_NATIVE:
aoqi@0: return "ACC_NATIVE";
aoqi@0: case ACC_INTERFACE:
aoqi@0: return "ACC_INTERFACE";
aoqi@0: case ACC_ABSTRACT:
aoqi@0: return "ACC_ABSTRACT";
aoqi@0: case ACC_STRICT:
aoqi@0: return "ACC_STRICT";
aoqi@0: case ACC_SYNTHETIC:
aoqi@0: return "ACC_SYNTHETIC";
aoqi@0: case ACC_ANNOTATION:
aoqi@0: return "ACC_ANNOTATION";
aoqi@0: case ACC_ENUM:
aoqi@0: return "ACC_ENUM";
aoqi@0: case ACC_MANDATED:
aoqi@0: return "ACC_MANDATED";
aoqi@0: default:
aoqi@0: return null;
aoqi@0: }
aoqi@0: }
aoqi@0:
aoqi@0: public final int flags;
aoqi@0: }