ModifierSet.java

/* 
  Copyright (C) 2013 Raquel Pau and Albert Coroleu.
 
 Walkmod 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 3 of the License, or
 (at your option) any later version.
 
 Walkmod 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 Walkmod.  If not, see <http://www.gnu.org/licenses/>.*/
package org.walkmod.javalang.ast.body;

import java.lang.reflect.Modifier;

/**
 * Class to hold modifiers.<br>
 * The modifier constants declared here holds equivalent values to
 * {@link Modifier} constants.
 */
public final class ModifierSet {

	public static final int PUBLIC = Modifier.PUBLIC;

	public static final int PRIVATE = Modifier.PRIVATE;

	public static final int PROTECTED = Modifier.PROTECTED;

	public static final int STATIC = Modifier.STATIC;

	public static final int FINAL = Modifier.FINAL;

	public static final int SYNCHRONIZED = Modifier.SYNCHRONIZED;

	public static final int VOLATILE = Modifier.VOLATILE;

	public static final int TRANSIENT = Modifier.TRANSIENT;

	public static final int NATIVE = Modifier.NATIVE;

	public static final int ABSTRACT = Modifier.ABSTRACT;

	public static final int STRICTFP = Modifier.STRICT;

	/**
	 * Adds the given modifier.
	 */
	public static int addModifier(int modifiers, int mod) {
		return modifiers | mod;
	}

	public static boolean hasModifier(int modifiers, int modifier) {
		return (modifiers & modifier) != 0;
	}

	public static boolean isAbstract(int modifiers) {
		return (modifiers & ABSTRACT) != 0;
	}

	public static boolean isFinal(int modifiers) {
		return (modifiers & FINAL) != 0;
	}

	public static boolean isNative(int modifiers) {
		return (modifiers & NATIVE) != 0;
	}

	public static boolean isPrivate(int modifiers) {
		return (modifiers & PRIVATE) != 0;
	}

	public static boolean isProtected(int modifiers) {
		return (modifiers & PROTECTED) != 0;
	}

	/**
	 * A set of accessors that indicate whether the specified modifier is in the
	 * set.
	 */
	public static boolean isPublic(int modifiers) {
		return (modifiers & PUBLIC) != 0;
	}

	public static boolean isStatic(int modifiers) {
		return (modifiers & STATIC) != 0;
	}

	public static boolean isStrictfp(int modifiers) {
		return (modifiers & STRICTFP) != 0;
	}

	public static boolean isSynchronized(int modifiers) {
		return (modifiers & SYNCHRONIZED) != 0;
	}

	public static boolean isTransient(int modifiers) {
		return (modifiers & TRANSIENT) != 0;
	}

	public static boolean isVolatile(int modifiers) {
		return (modifiers & VOLATILE) != 0;
	}

	/**
	 * Removes the given modifier.
	 */
	public static int removeModifier(int modifiers, int mod) {
		return modifiers & ~mod;
	}

	private ModifierSet() {
	}
}