SCViewer/com.minres.scviewer.databas.../src/com/minres/scviewer/database/vcd/VCDDbLoader.java

169 lines
5.0 KiB
Java
Raw Normal View History

2015-01-06 17:14:16 +01:00
package com.minres.scviewer.database.vcd;
import java.io.File;
import java.io.FileInputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Stack;
import java.util.Vector;
2015-01-09 09:16:40 +01:00
import com.minres.scviewer.database.BitVector;
2015-01-06 17:14:16 +01:00
import com.minres.scviewer.database.EventTime;
import com.minres.scviewer.database.HierNode;
import com.minres.scviewer.database.ISignal;
import com.minres.scviewer.database.ISignalChange;
import com.minres.scviewer.database.ISignalChangeMulti;
import com.minres.scviewer.database.ISignalChangeSingle;
import com.minres.scviewer.database.IWaveformDb;
import com.minres.scviewer.database.IHierNode;
import com.minres.scviewer.database.ITxStream;
import com.minres.scviewer.database.IWaveform;
import com.minres.scviewer.database.IWaveformDbLoader;
2015-01-06 17:14:16 +01:00
import com.minres.scviewer.database.InputFormatException;
import com.minres.scviewer.database.SignalChange;
// TODO: Auto-generated Javadoc
/**
* The Class VCDDb.
*/
public class VCDDbLoader implements IWaveformDbLoader, IVCDDatabaseBuilder {
2015-01-06 17:14:16 +01:00
2015-01-09 14:17:29 +01:00
private static final EventTime.Unit TIME_RES = EventTime.Unit.PS;
2015-01-06 17:14:16 +01:00
private IWaveformDb db;
2015-01-06 17:14:16 +01:00
/** The module stack. */
private Stack<String> moduleStack;
/** The signals. */
private List<IWaveform> signals;
private long maxTime;
/**
* Instantiates a new VCD db.
*
* @param netName the net name
*/
public VCDDbLoader() {
2015-01-06 17:14:16 +01:00
}
private byte[] x = "$date".getBytes();
2015-01-06 17:14:16 +01:00
/* (non-Javadoc)
* @see com.minres.scviewer.database.ITrDb#load(java.io.File)
*/
@Override
public boolean load(IWaveformDb db, File file) throws Exception {
this.db=db;
FileInputStream fis = new FileInputStream(file);
byte[] buffer = new byte[x.length];
int read = fis.read(buffer, 0, x.length);
fis.close();
if (read == x.length)
for (int i = 0; i < x.length; i++)
if (buffer[i] != x[i])
return false;
signals = new Vector<IWaveform>();
2015-01-06 17:14:16 +01:00
moduleStack= new Stack<String>();
boolean res = new VCDFileParser(false).load(new FileInputStream(file), this);
2015-01-06 17:14:16 +01:00
moduleStack=null;
if(!res) throw new InputFormatException();
EventTime lastTime=new EventTime(maxTime, TIME_RES);
for(IWaveform signal:signals){
ISignalChange change = ((ISignal<ISignalChange>)signal).getSignalChanges().last();
if(lastTime.compareTo(change.getTime())>0){
ISignalChange lastChange = change.duplicate();
((SignalChange)lastChange).setTime(lastTime);
((ISignal<ISignalChange>)signal).getSignalChanges().add(lastChange);
}
}
return true;
2015-01-06 17:14:16 +01:00
}
/* (non-Javadoc)
* @see com.minres.scviewer.database.ITrDb#getMaxTime()
*/
@Override
public EventTime getMaxTime() {
return new EventTime(maxTime, TIME_RES);
}
/* (non-Javadoc)
* @see com.minres.scviewer.database.ITrDb#getAllWaves()
*/
@Override
public List<IWaveform> getAllWaves() {
return signals;
}
/* (non-Javadoc)
* @see com.minres.scviewer.database.vcd.ITraceBuilder#enterModule(java.lang.String)
*/
@Override
public void enterModule(String tokenString) {
if(moduleStack.isEmpty())
moduleStack.push(tokenString);
else
moduleStack.push(moduleStack.peek()+"."+tokenString);
}
/* (non-Javadoc)
* @see com.minres.scviewer.database.vcd.ITraceBuilder#exitModule()
*/
@Override
public void exitModule() {
if(!moduleStack.isEmpty()) moduleStack.pop();
}
/* (non-Javadoc)
* @see com.minres.scviewer.database.vcd.ITraceBuilder#newNet(java.lang.String, int, int)
*/
@Override
public Integer newNet(String netName, int i, int width) {
int id = signals.size();
VCDSignal<? extends ISignalChange> signal;
if(width==1){
signal = i<0 ? new VCDSignal<ISignalChangeSingle>(db, id, netName) :
2015-01-06 17:14:16 +01:00
new VCDSignal<ISignalChangeSingle>(signals.get(i), id, netName);
} else {
signal = i<0 ? new VCDSignal<ISignalChangeMulti>(db, id, netName, width) :
2015-01-06 17:14:16 +01:00
new VCDSignal<ISignalChangeMulti>(signals.get(i), id, netName);
};
signals.add(signal);
return id;
}
/* (non-Javadoc)
* @see com.minres.scviewer.database.vcd.ITraceBuilder#getNetWidth(int)
*/
@SuppressWarnings("unchecked")
2015-01-06 17:14:16 +01:00
@Override
public int getNetWidth(int intValue) {
VCDSignal<? extends ISignalChange> signal = (VCDSignal<? extends ISignalChange>) signals.get(intValue);
return signal.getWidth();
}
/* (non-Javadoc)
* @see com.minres.scviewer.database.vcd.ITraceBuilder#appendTransition(int, long, com.minres.scviewer.database.vcd.BitVector)
*/
@SuppressWarnings("unchecked")
@Override
public void appendTransition(int intValue, long fCurrentTime, BitVector decodedValues) {
VCDSignal<? extends ISignalChange> signal = (VCDSignal<? extends ISignalChange>) signals.get(intValue);
EventTime time = new EventTime(fCurrentTime, TIME_RES);
if(signal.getWidth()==1){
VCDSignalChangeSingle change = new VCDSignalChangeSingle(time, decodedValues.getValue()[0]);
((VCDSignal<ISignalChangeSingle>)signal).addSignalChange(change);
} else {
2015-01-09 09:16:40 +01:00
VCDSignalChangeMulti change = new VCDSignalChangeMulti(time, decodedValues);
2015-01-06 17:14:16 +01:00
((VCDSignal<VCDSignalChangeMulti>)signal).addSignalChange(change);
}
maxTime= Math.max(maxTime, fCurrentTime);
}
}