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/*
***** BEGIN LICENSE BLOCK *****
* Version: EPL 2.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Eclipse Public
* License Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/epl-v20.html
*
* 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.
*
* Copyright (C) 2001 Alan Moore <alan_moore@gmx.net>
* Copyright (C) 2001-2004 Jan Arne Petersen <jpetersen@uni-bonn.de>
* Copyright (C) 2002-2004 Anders Bengtsson <ndrsbngtssn@yahoo.se>
* Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
* Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the EPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the EPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****/
package org.jruby;
import org.jcodings.specific.USASCIIEncoding;
import org.jruby.anno.JRubyClass;
import org.jruby.anno.JRubyMethod;
import org.jruby.compiler.Constantizable;
import org.jruby.runtime.ClassIndex;
import org.jruby.runtime.SimpleHash;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.runtime.opto.OptoFactory;
import org.jruby.util.ByteList;
import static org.jruby.api.Convert.asFixnum;
@JRubyClass(name={"TrueClass", "FalseClass"})
public class RubyBoolean extends RubyObject implements Constantizable, Appendable, SimpleHash {
public static final int TRUE_ID = 20;
private final int hashCode;
private final transient Object constant;
private final RubyString toS;
RubyBoolean(Ruby runtime, boolean value) {
super(runtime,
(value ? runtime.getTrueClass() : runtime.getFalseClass()),
false); // Don't put in object space
if (!value) flags = FALSE;
setFrozen(true);
if (RubyInstanceConfig.CONSISTENT_HASHING_ENABLED) {
// default to a fixed value
this.hashCode = value ? 155 : -48;
} else {
// save the object id based hash code;
this.hashCode = System.identityHashCode(this);
}
constant = OptoFactory.newConstantWrapper(IRubyObject.class, this);
toS = RubyString.newString(runtime, value ? TRUE_BYTES : FALSE_BYTES);
toS.setFrozen(true);
}
@Override
public ClassIndex getNativeClassIndex() {
return (flags & FALSE) == 0 ? ClassIndex.TRUE : ClassIndex.FALSE;
}
@Override
public boolean isImmediate() {
return true;
}
public RubyClass singletonClass(ThreadContext context) {
return metaClass;
}
@Override
public Class<?> getJavaClass() {
return boolean.class;
}
/**
* @see org.jruby.compiler.Constantizable
*/
@Override
public Object constant() {
return constant;
}
public static void finishFalseClass(ThreadContext context, RubyClass False) {
False.reifiedClass(RubyBoolean.class).
classIndex(ClassIndex.FALSE).
defineMethods(context, False.class, RubyBoolean.class).
tap(c -> c.getMetaClass().undefMethods(context, "new"));
}
public static void finishTrueClass(ThreadContext context, RubyClass True) {
True.reifiedClass(RubyBoolean.class).
classIndex(ClassIndex.TRUE).
defineMethods(context, True.class, RubyBoolean.class).
tap(c -> c.getMetaClass().undefMethods(context, "new"));
}
@Deprecated(since = "10.0.0.0")
public static RubyBoolean newBoolean(Ruby runtime, boolean value) {
return value ? runtime.getTrue() : runtime.getFalse();
}
@Deprecated(since = "10.0.0.0")
public static RubyBoolean newBoolean(ThreadContext context, boolean value) {
return value ? context.tru : context.fals;
}
public static final ByteList FALSE_BYTES = new ByteList(new byte[] { 'f','a','l','s','e' }, USASCIIEncoding.INSTANCE);
@Override
public void appendIntoString(RubyString target) {
target.append(toS);
}
public static class False extends RubyBoolean {
False(Ruby runtime) {
super(runtime, false);
}
@JRubyMethod(name = "&")
public static IRubyObject false_and(IRubyObject fals, IRubyObject oth) {
return fals;
}
@JRubyMethod(name = "|")
public static IRubyObject false_or(ThreadContext context, IRubyObject fals, IRubyObject oth) {
return oth.isTrue() ? context.tru : fals;
}
@JRubyMethod(name = "^")
public static IRubyObject false_xor(ThreadContext context, IRubyObject fals, IRubyObject oth) {
return oth.isTrue() ? context.tru : fals;
}
@Deprecated(since = "10.0.0.0")
public static RubyString false_to_s(ThreadContext context, IRubyObject fals) {
return context.runtime.getFalseString();
}
@Deprecated(since = "10.0.0.0")
public RubyString inspect() {
return getRuntime().getFalseString();
}
@JRubyMethod(name = "to_s", alias = "inspect")
public RubyString inspect(ThreadContext context) {
return context.runtime.getFalseString();
}
@Override
public <T> T toJava(Class<T> target) {
if (target.isAssignableFrom(Boolean.class) || target == boolean.class) {
return (T) Boolean.FALSE;
}
return super.toJava(target);
}
}
public static final ByteList TRUE_BYTES = new ByteList(new byte[] { 't','r','u','e' }, USASCIIEncoding.INSTANCE);
public static class True extends RubyBoolean {
True(Ruby runtime) {
super(runtime, true);
setFrozen(true);
}
@JRubyMethod(name = "&")
public static IRubyObject true_and(ThreadContext context, IRubyObject tru, IRubyObject oth) {
return oth.isTrue() ? tru : context.fals;
}
@JRubyMethod(name = "|")
public static IRubyObject true_or(IRubyObject tru, IRubyObject oth) {
return tru;
}
@JRubyMethod(name = "^")
public static IRubyObject true_xor(ThreadContext context, IRubyObject tru, IRubyObject oth) {
return oth.isTrue() ? context.fals : tru;
}
@Deprecated(since = "10.0.0.0")
public static RubyString true_to_s(ThreadContext context, IRubyObject tru) {
return context.runtime.getTrueString();
}
@Deprecated(since = "10.0.0.0")
public RubyString inspect() {
return getRuntime().getTrueString();
}
@JRubyMethod(name = "to_s", alias = "inspect")
public RubyString inspect(ThreadContext context) {
return context.runtime.getTrueString();
}
@Override
public <T> T toJava(Class<T> target) {
if (target.isAssignableFrom(Boolean.class) || target == boolean.class) {
return (T) Boolean.TRUE;
}
return super.toJava(target);
}
}
@JRubyMethod(name = "hash")
public RubyFixnum hash(ThreadContext context) {
if ((flags & FALSE_F) == 0) {
return context.runtime.getTrueHash();
} else {
return context.runtime.getFalseHash();
}
}
@Override
public int hashCode() {
return hashCode;
}
@Deprecated(since = "10.0.3.0")
@Override
public RubyFixnum id() {
if ((flags & FALSE) == 0) {
return metaClass.runtime.getTrueID();
} else {
return RubyFixnum.zero(metaClass.runtime);
}
}
@Override
public RubyInteger __id__(ThreadContext context) {
if ((flags & FALSE_F) == 0) {
return context.runtime.getTrueID();
} else {
return RubyFixnum.zero(context.runtime);
}
}
@Deprecated(since = "10.0.0.0", forRemoval = true)
@SuppressWarnings("removal")
public void marshalTo(org.jruby.runtime.marshal.MarshalStream output) throws java.io.IOException {
output.write(isTrue() ? 'T' : 'F');
}
@Deprecated(since = "9.4.0.0")
@Override
public IRubyObject taint(ThreadContext context) {
return this;
}
}