/*
* Copyright (c) 1998, 2006, 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.tools.jdi;
import com.sun.jdi.*;
public abstract class PrimitiveValueImpl extends ValueImpl
implements PrimitiveValue {
PrimitiveValueImpl(VirtualMachine aVm) {
super(aVm);
}
abstract public boolean booleanValue();
abstract public byte byteValue();
abstract public char charValue();
abstract public short shortValue();
abstract public int intValue();
abstract public long longValue();
abstract public float floatValue();
abstract public double doubleValue();
/*
* The checked versions of the value accessors throw
* InvalidTypeException if the required conversion is
* narrowing and would result in the loss of information
* (either magnitude or precision).
*
* Default implementations here do no checking; subclasses
* override as necessary to do the proper checking.
*/
byte checkedByteValue() throws InvalidTypeException {
return byteValue();
}
char checkedCharValue() throws InvalidTypeException {
return charValue();
}
short checkedShortValue() throws InvalidTypeException {
return shortValue();
}
int checkedIntValue() throws InvalidTypeException {
return intValue();
}
long checkedLongValue() throws InvalidTypeException {
return longValue();
}
float checkedFloatValue() throws InvalidTypeException {
return floatValue();
}
final boolean checkedBooleanValue() throws InvalidTypeException {
/*
* Always disallow a conversion to boolean from any other
* primitive
*/
if (this instanceof BooleanValue) {
return booleanValue();
} else {
throw new InvalidTypeException("Can't convert non-boolean value to boolean");
}
}
final double checkedDoubleValue() throws InvalidTypeException {
/*
* Can't overflow by converting to double, so this method
* is never overridden
*/
return doubleValue();
}
ValueImpl prepareForAssignmentTo(ValueContainer destination)
throws InvalidTypeException {
return convertForAssignmentTo(destination);
}
ValueImpl convertForAssignmentTo(ValueContainer destination)
throws InvalidTypeException {
/*
* TO DO: Centralize JNI signature knowledge
*/
if (destination.signature().length() > 1) {
throw new InvalidTypeException("Can't assign primitive value to object");
}
if ((destination.signature().charAt(0) == 'Z') &&
(type().signature().charAt(0) != 'Z')) {
throw new InvalidTypeException("Can't assign non-boolean value to a boolean");
}
if ((destination.signature().charAt(0) != 'Z') &&
(type().signature().charAt(0) == 'Z')) {
throw new InvalidTypeException("Can't assign boolean value to an non-boolean");
}
if ("void".equals(destination.typeName())) {
throw new InvalidTypeException("Can't assign primitive value to a void");
}
try {
PrimitiveTypeImpl primitiveType = (PrimitiveTypeImpl)destination.type();
return (ValueImpl)(primitiveType.convert(this));
} catch (ClassNotLoadedException e) {
throw new InternalException("Signature and type inconsistent for: " +
destination.typeName());
}
}
}