protected SMModel(PkgInt classTable, int classFactor, PkgInt stateTable, int[] charLenTable, string name)
{
this.classTable = classTable;
this.classFactor = classFactor;
this.stateTable = stateTable;
this.charLenTable = charLenTable;
this.name = name;
}
public SMState NextState(byte c)
{
//for each byte we get its class , if it is first byte, we also get byte length
int byteCls = PkgInt.GETFROMPCK(c, mModel.classTable);
if (mCurrentState == SMState.Start)
{
mCurrentBytePos = 0;
mCurrentCharLen = mModel.charLenTable[byteCls];
}
//from byte's class and stateTable, we get its next state
mCurrentState = (SMState)PkgInt.GETFROMPCK((int)mCurrentState * ((int)mModel.classFactor) + byteCls,
mModel.stateTable);
mCurrentBytePos++;
return(mCurrentState);
}
public static int GETFROMPCK(int i, PkgInt c)
{
return(((c.data[(i) >> (int)c.idxsft]) >> ((i & (int)c.sftmsk) << (int)c.bitsft)) & (int)c.unitmsk);
}