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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.dx.rop.cst;
import com.android.dx.rop.type.Type;
/**
* Constants of type {@code boolean}.
*/
public final class CstBoolean
extends CstLiteral32 {
/** {@code non-null;} instance representing {@code false} */
public static final CstBoolean VALUE_FALSE = new CstBoolean(false);
/** {@code non-null;} instance representing {@code true} */
public static final CstBoolean VALUE_TRUE = new CstBoolean(true);
/**
* Makes an instance for the given value. This will return an
* already-allocated instance.
*
* @param value the {@code boolean} value
* @return {@code non-null;} the appropriate instance
*/
public static CstBoolean make(boolean value) {
return value ? VALUE_TRUE : VALUE_FALSE;
}
/**
* Makes an instance for the given {@code int} value. This
* will return an already-allocated instance.
*
* @param value must be either {@code 0} or {@code 1}
* @return {@code non-null;} the appropriate instance
*/
public static CstBoolean make(int value) {
if (value == 0) {
return VALUE_FALSE;
} else if (value == 1) {
return VALUE_TRUE;
} else {
throw new IllegalArgumentException("bogus value: " + value);
}
}
/**
* Constructs an instance. This constructor is private; use {@link #make}.
*
* @param value the {@code boolean} value
*/
private CstBoolean(boolean value) {
super(value ? 1 : 0);
}
/** {@inheritDoc} */
@Override
public String toString() {
return getValue() ? "boolean{true}" : "boolean{false}";
}
/** {@inheritDoc} */
public Type getType() {
return Type.BOOLEAN;
}
/** {@inheritDoc} */
@Override
public String typeName() {
return "boolean";
}
/** {@inheritDoc} */
public String toHuman() {
return getValue() ? "true" : "false";
}
/**
* Gets the {@code boolean} value.
*
* @return the value
*/
public boolean getValue() {
return (getIntBits() == 0) ? false : true;
}
}
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