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