modifier.java

一个开源的JAVA虚拟机

/*
    libaegisvm - The Aegis Virtual Machine for executing Java bytecode
    Copyright (C) 2001-2002  Philip W. L. Fong

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

package java.lang.reflect;

public class Modifier {
    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 TRANSIENT    = 0x0080;
    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 Modifier() { }
    public static boolean isPublic(int mod) {
	return (mod & PUBLIC) != 0;
    }
    public static boolean isPrivate(int mod) {
	return (mod & PRIVATE) != 0;
    }
    public static boolean isProtected(int mod) {
	return (mod & PROTECTED) != 0;
    }
    public static boolean isStatic(int mod) {
	return (mod & STATIC) != 0;
    }
    public static boolean isFinal(int mod) {
	return (mod & FINAL) != 0;
    }
    public static boolean isSynchronized(int mod) {
	return (mod & SYNCHRONIZED) != 0;
    }
    public static boolean isVolatile(int mod) {
	return (mod & VOLATILE) != 0;
    }
    public static boolean isTransient(int mod) {
	return (mod & TRANSIENT) != 0;
    }
    public static boolean isNative(int mod) {
	return (mod & NATIVE) != 0;
    }
    public static boolean isInterface(int mod) {
	return (mod & INTERFACE) != 0;
    }
    public static boolean isAbstract(int mod) {
	return (mod & ABSTRACT) != 0;
    }
    public static boolean isStrict(int mod) {
	return (mod & STRICT) != 0;
    }
    public static String toString(int mod) {
	String modifier = "";
	if (isPublic(mod))
	    modifier += "public ";
	if (isProtected(mod))
	    modifier += "protected ";
	if (isPrivate(mod))
	    modifier += "private ";
	if (isAbstract(mod))
	    modifier += "abstract ";
	if (isStatic(mod))
	    modifier += "static ";
	if (isFinal(mod))
	    modifier += "final ";
	if (isTransient(mod))
	    modifier += "transient ";
	if (isVolatile(mod))
	    modifier += "volatile ";
	if (isSynchronized(mod))
	    modifier += "synchronized ";
	if (isNative(mod))
	    modifier += "native ";
	if (isStrict(mod))
	    modifier += "strictfp ";
	if (isInterface(mod))
	    modifier += "interface ";
	return modifier;
    }
}