scouter.javassist.bytecode.AccessFlag Maven / Gradle / Ivy
/*
* Javassist, a Java-bytecode translator toolkit.
* Copyright (C) 1999- Shigeru Chiba. All Rights Reserved.
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. Alternatively, the contents of this file may be used under
* the terms of the GNU Lesser General Public License Version 2.1 or later,
* or the Apache License Version 2.0.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*/
package scouter.javassist.bytecode;
/**
* A support class providing static methods and constants
* for access modifiers such as public, private, ...
*/
public class AccessFlag {
public static final int PUBLIC = 0x0001;
public static final int PRIVATE = 0x0002;
public static final int PROTECTED = 0x0004;
public static final int STATIC = 0x0008;
public static final int FINAL = 0x0010;
public static final int SYNCHRONIZED = 0x0020;
public static final int VOLATILE = 0x0040;
public static final int BRIDGE = 0x0040; // for method_info
public static final int TRANSIENT = 0x0080;
public static final int VARARGS = 0x0080; // for method_info
public static final int NATIVE = 0x0100;
public static final int INTERFACE = 0x0200;
public static final int ABSTRACT = 0x0400;
public static final int STRICT = 0x0800;
public static final int SYNTHETIC = 0x1000;
public static final int ANNOTATION = 0x2000;
public static final int ENUM = 0x4000;
public static final int MANDATED = 0x8000;
public static final int SUPER = 0x0020;
public static final int MODULE = 0x8000;
// Note: 0x0020 is assigned to both ACC_SUPER and ACC_SYNCHRONIZED
// although java.lang.reflect.Modifier does not recognize ACC_SUPER.
/**
* Turns the public bit on. The protected and private bits are
* cleared.
*/
public static int setPublic(int accflags) {
return (accflags & ~(PRIVATE | PROTECTED)) | PUBLIC;
}
/**
* Turns the protected bit on. The protected and public bits are
* cleared.
*/
public static int setProtected(int accflags) {
return (accflags & ~(PRIVATE | PUBLIC)) | PROTECTED;
}
/**
* Truns the private bit on. The protected and private bits are
* cleared.
*/
public static int setPrivate(int accflags) {
return (accflags & ~(PROTECTED | PUBLIC)) | PRIVATE;
}
/**
* Clears the public, protected, and private bits.
*/
public static int setPackage(int accflags) {
return (accflags & ~(PROTECTED | PUBLIC | PRIVATE));
}
/**
* Returns true if the access flags include the public bit.
*/
public static boolean isPublic(int accflags) {
return (accflags & PUBLIC) != 0;
}
/**
* Returns true if the access flags include the protected bit.
*/
public static boolean isProtected(int accflags) {
return (accflags & PROTECTED) != 0;
}
/**
* Returns true if the access flags include the private bit.
*/
public static boolean isPrivate(int accflags) {
return (accflags & PRIVATE) != 0;
}
/**
* Returns true if the access flags include neither public, protected,
* or private.
*/
public static boolean isPackage(int accflags) {
return (accflags & (PROTECTED | PUBLIC | PRIVATE)) == 0;
}
/**
* Clears a specified bit in accflags.
*/
public static int clear(int accflags, int clearBit) {
return accflags & ~clearBit;
}
/**
* Converts a scouter.javassist.Modifier into
* a scouter.javassist.bytecode.AccessFlag.
*
* @param modifier scouter.javassist.Modifier
*/
public static int of(int modifier) {
return modifier;
}
/**
* Converts a scouter.javassist.bytecode.AccessFlag
* into a scouter.javassist.Modifier.
*
* @param accflags scouter.javassist.bytecode.Accessflag
*/
public static int toModifier(int accflags) {
return accflags;
}
}