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/*******************************************************************************
* Copyright (c) 2004, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.internal.ui.views.memory.renderings;
import org.eclipse.debug.core.model.IMemoryBlock;
import org.eclipse.debug.core.model.IMemoryBlockExtension;
import org.eclipse.debug.core.model.MemoryByte;
import org.eclipse.debug.internal.ui.memory.provisional.AbstractAsyncTableRendering;
import org.eclipse.debug.ui.memory.IMemoryRenderingContainer;
/**
* Abstract implementation to an integer rendering.
* @since 3.1
*
*/
public abstract class AbstractIntegerRendering extends AbstractAsyncTableRendering {
private int fDisplayEndianess = RenderingsUtil.ENDIANESS_UNKNOWN;
public AbstractIntegerRendering(String renderingId){
super(renderingId);
}
public void init(IMemoryRenderingContainer container, IMemoryBlock block) {
super.init(container, block);
// default to big endian for simple memory block
if (!(block instanceof IMemoryBlockExtension))
fDisplayEndianess = RenderingsUtil.BIG_ENDIAN;
}
/**
* @return Returns the currentEndianess.
*/
public int getDisplayEndianess() {
return fDisplayEndianess;
}
/**
* @param currentEndianess The currentEndianess to set.
*/
public void setDisplayEndianess(int currentEndianess) {
fDisplayEndianess = currentEndianess;
}
protected int getBytesEndianess(MemoryByte[] data) {
int endianess = RenderingsUtil.ENDIANESS_UNKNOWN;
if (!data[0].isEndianessKnown())
return endianess;
if (data[0].isBigEndian())
endianess = RenderingsUtil.BIG_ENDIAN;
else
endianess = RenderingsUtil.LITTLE_ENDIAN;
for (int i=1; i<data.length; i++)
{
// if endianess is not known for a byte, return unknown
if (!data[i].isEndianessKnown())
return RenderingsUtil.ENDIANESS_UNKNOWN;
int byteEndianess = data[i].isBigEndian()?RenderingsUtil.BIG_ENDIAN:RenderingsUtil.LITTLE_ENDIAN;
if (byteEndianess != endianess)
{
endianess = RenderingsUtil.ENDIANESS_UNKNOWN;
break;
}
}
return endianess;
}
}
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