com.android.dx.cf.attrib.AttConstantValue Maven / Gradle / Ivy
/*
* 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.cf.attrib;
import com.android.dx.rop.cst.CstDouble;
import com.android.dx.rop.cst.CstFloat;
import com.android.dx.rop.cst.CstInteger;
import com.android.dx.rop.cst.CstLong;
import com.android.dx.rop.cst.CstString;
import com.android.dx.rop.cst.TypedConstant;
/**
* Attribute class for standard {@code ConstantValue} attributes.
*/
public final class AttConstantValue extends BaseAttribute {
/** {@code non-null;} attribute name for attributes of this type */
public static final String ATTRIBUTE_NAME = "ConstantValue";
/** {@code non-null;} the constant value */
private final TypedConstant constantValue;
/**
* Constructs an instance.
*
* @param constantValue {@code non-null;} the constant value, which must
* be an instance of one of: {@code CstString},
* {@code CstInteger}, {@code CstLong},
* {@code CstFloat}, or {@code CstDouble}
*/
public AttConstantValue(TypedConstant constantValue) {
super(ATTRIBUTE_NAME);
if (!((constantValue instanceof CstString) ||
(constantValue instanceof CstInteger) ||
(constantValue instanceof CstLong) ||
(constantValue instanceof CstFloat) ||
(constantValue instanceof CstDouble))) {
if (constantValue == null) {
throw new NullPointerException("constantValue == null");
}
throw new IllegalArgumentException("bad type for constantValue");
}
this.constantValue = constantValue;
}
/** {@inheritDoc} */
public int byteLength() {
return 8;
}
/**
* Gets the constant value of this instance. The returned value
* is an instance of one of: {@code CstString},
* {@code CstInteger}, {@code CstLong},
* {@code CstFloat}, or {@code CstDouble}.
*
* @return {@code non-null;} the constant value
*/
public TypedConstant getConstantValue() {
return constantValue;
}
}