92 lines
3.0 KiB
Java
92 lines
3.0 KiB
Java
/*
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* Copyright (c) 2002-2010 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.lwjgl;
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/**
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* Base PointerWrapper implementation.
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*
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* @author Spasi
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*/
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public abstract class PointerWrapperAbstract implements PointerWrapper {
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protected final long pointer;
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protected PointerWrapperAbstract(final long pointer) {
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this.pointer = pointer;
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}
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/**
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* Returns true if this object represents a valid pointer.
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* The pointer might be invalid because it is NULL or because
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* some other action has deleted the object that this pointer
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* represents.
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*
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* @return true if the pointer is valid
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*/
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public boolean isValid() {
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return pointer != 0;
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}
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/**
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* Checks if the pointer is valid and throws an IllegalStateException if
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* it is not. This method is a NO-OP, unless the org.lwjgl.util.Debug
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* property has been set to true.
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*/
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public final void checkValid() {
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if ( LWJGLUtil.DEBUG && !isValid() )
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throw new IllegalStateException("This " + getClass().getSimpleName() + " pointer is not valid.");
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}
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public final long getPointer() {
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checkValid();
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return pointer;
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}
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public boolean equals(final Object o) {
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if ( this == o ) return true;
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if ( !(o instanceof PointerWrapperAbstract) ) return false;
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final PointerWrapperAbstract that = (PointerWrapperAbstract)o;
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if ( pointer != that.pointer ) return false;
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return true;
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}
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public int hashCode() {
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return (int)(pointer ^ (pointer >>> 32));
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}
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public String toString() {
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return getClass().getSimpleName() + " pointer (0x" + Long.toHexString(pointer).toUpperCase() + ")";
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}
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} |