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/*
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* Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.tools.jdi;
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import com.sun.jdi.BooleanValue;
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import com.sun.jdi.ClassNotLoadedException;
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import com.sun.jdi.InternalException;
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import com.sun.jdi.InvalidTypeException;
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import com.sun.jdi.PrimitiveValue;
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import com.sun.jdi.VirtualMachine;
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public abstract class PrimitiveValueImpl extends ValueImpl
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implements PrimitiveValue
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{
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PrimitiveValueImpl(VirtualMachine aVm) {
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super(aVm);
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}
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abstract public boolean booleanValue();
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abstract public byte byteValue();
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abstract public char charValue();
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abstract public short shortValue();
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abstract public int intValue();
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abstract public long longValue();
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abstract public float floatValue();
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abstract public double doubleValue();
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/*
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* The checked versions of the value accessors throw
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* InvalidTypeException if the required conversion is
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* narrowing and would result in the loss of information
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* (either magnitude or precision).
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*
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* Default implementations here do no checking; subclasses
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* override as necessary to do the proper checking.
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*/
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byte checkedByteValue() throws InvalidTypeException {
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return byteValue();
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}
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char checkedCharValue() throws InvalidTypeException {
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return charValue();
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}
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short checkedShortValue() throws InvalidTypeException {
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return shortValue();
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}
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int checkedIntValue() throws InvalidTypeException {
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return intValue();
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}
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long checkedLongValue() throws InvalidTypeException {
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return longValue();
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}
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float checkedFloatValue() throws InvalidTypeException {
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return floatValue();
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}
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final boolean checkedBooleanValue() throws InvalidTypeException {
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/*
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* Always disallow a conversion to boolean from any other
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* primitive
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*/
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if (this instanceof BooleanValue) {
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return booleanValue();
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} else {
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throw new InvalidTypeException("Can't convert non-boolean value to boolean");
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}
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}
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final double checkedDoubleValue() throws InvalidTypeException {
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/*
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* Can't overflow by converting to double, so this method
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* is never overridden
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*/
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return doubleValue();
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}
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ValueImpl prepareForAssignmentTo(ValueContainer destination)
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throws InvalidTypeException
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{
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return convertForAssignmentTo(destination);
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}
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ValueImpl convertForAssignmentTo(ValueContainer destination)
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throws InvalidTypeException
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{
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/*
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* TO DO: Centralize JNI signature knowledge
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*/
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if (destination.signature().length() > 1) {
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throw new InvalidTypeException("Can't assign primitive value to object");
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}
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if ((destination.signature().charAt(0) == 'Z') &&
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(type().signature().charAt(0) != 'Z')) {
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throw new InvalidTypeException("Can't assign non-boolean value to a boolean");
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}
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if ((destination.signature().charAt(0) != 'Z') &&
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(type().signature().charAt(0) == 'Z')) {
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throw new InvalidTypeException("Can't assign boolean value to an non-boolean");
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}
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if ("void".equals(destination.typeName())) {
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throw new InvalidTypeException("Can't assign primitive value to a void");
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}
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try {
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PrimitiveTypeImpl primitiveType = (PrimitiveTypeImpl)destination.type();
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return (ValueImpl)(primitiveType.convert(this));
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} catch (ClassNotLoadedException e) {
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throw new InternalException("Signature and type inconsistent for: " +
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destination.typeName());
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}
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}
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}
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