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/*
* Copyright (c) 1997, 2011, 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.codemodel.internal;
import java.io.PrintWriter;
import java.io.StringWriter;
/**
* Modifier groups.
*/
public class JMods implements JGenerable {
//
// mask
//
private static int VAR = JMod.FINAL;
private static int FIELD = (JMod.PUBLIC | JMod.PRIVATE | JMod.PROTECTED
| JMod.STATIC | JMod.FINAL
| JMod.TRANSIENT | JMod.VOLATILE);
private static int METHOD = (JMod.PUBLIC | JMod.PRIVATE | JMod.PROTECTED | JMod.FINAL
| JMod.ABSTRACT | JMod.STATIC | JMod.NATIVE | JMod.SYNCHRONIZED);
private static int CLASS = (JMod.PUBLIC | JMod.PRIVATE | JMod.PROTECTED
| JMod.STATIC | JMod.FINAL | JMod.ABSTRACT);
private static int INTERFACE = JMod.PUBLIC;
/** bit-packed representation of modifiers. */
private int mods;
private JMods(int mods) {
this.mods = mods;
}
/**
* Gets the bit-packed representaion of modifiers.
*/
public int getValue() {
return mods;
}
private static void check(int mods, int legal, String what) {
if ((mods & ~legal) != 0) {
throw new IllegalArgumentException("Illegal modifiers for "
+ what + ": "
+ new JMods(mods).toString());
}
/* ## check for illegal combinations too */
}
static JMods forVar(int mods) {
check(mods, VAR, "variable");
return new JMods(mods);
}
static JMods forField(int mods) {
check(mods, FIELD, "field");
return new JMods(mods);
}
static JMods forMethod(int mods) {
check(mods, METHOD, "method");
return new JMods(mods);
}
static JMods forClass(int mods) {
check(mods, CLASS, "class");
return new JMods(mods);
}
static JMods forInterface(int mods) {
check(mods, INTERFACE, "class");
return new JMods(mods);
}
public boolean isAbstract() {
return (mods & JMod.ABSTRACT) != 0;
}
public boolean isNative() {
return (mods & JMod.NATIVE) != 0;
}
public boolean isSynchronized() {
return (mods & JMod.SYNCHRONIZED) != 0;
}
public void setSynchronized(boolean newValue) {
setFlag(JMod.SYNCHRONIZED, newValue);
}
public void setPrivate() {
setFlag(JMod.PUBLIC, false);
setFlag(JMod.PROTECTED, false);
setFlag(JMod.PRIVATE, true);
}
public void setProtected() {
setFlag(JMod.PUBLIC, false);
setFlag(JMod.PROTECTED, true);
setFlag(JMod.PRIVATE, false);
}
public void setPublic() {
setFlag(JMod.PUBLIC, true);
setFlag(JMod.PROTECTED, false);
setFlag(JMod.PRIVATE, false);
}
public void setFinal(boolean newValue) {
setFlag(JMod.FINAL, newValue);
}
private void setFlag(int bit, boolean newValue) {
mods = (mods & ~bit) | (newValue ? bit : 0);
}
public void generate(JFormatter f) {
if ((mods & JMod.PUBLIC) != 0) f.p("public");
if ((mods & JMod.PROTECTED) != 0) f.p("protected");
if ((mods & JMod.PRIVATE) != 0) f.p("private");
if ((mods & JMod.FINAL) != 0) f.p("final");
if ((mods & JMod.STATIC) != 0) f.p("static");
if ((mods & JMod.ABSTRACT) != 0) f.p("abstract");
if ((mods & JMod.NATIVE) != 0) f.p("native");
if ((mods & JMod.SYNCHRONIZED) != 0) f.p("synchronized");
if ((mods & JMod.TRANSIENT) != 0) f.p("transient");
if ((mods & JMod.VOLATILE) != 0) f.p("volatile");
}
@Override
public String toString() {
StringWriter s = new StringWriter();
JFormatter f = new JFormatter(new PrintWriter(s));
this.generate(f);
return s.toString();
}
}
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