hackedteam/vector-edk

// Base.java

package SevenZip.Compression.LZMA;

public class Base
{
    public static final int kNumRepDistances = 4;
    public static final int kNumStates = 12;
    
    public static final int StateInit()
    {
        return 0;
    }
    
    public static final int StateUpdateChar(int index)
    {
        if (index < 4) 
            return 0;
        if (index < 10) 
            return index - 3;
        return index - 6;
    }
    
    public static final int StateUpdateMatch(int index)
    {
        return (index < 7 ? 7 : 10); 
    }

    public static final int StateUpdateRep(int index)
    { 
        return (index < 7 ? 8 : 11); 
    }
    
    public static final int StateUpdateShortRep(int index)
    { 
        return (index < 7 ? 9 : 11); 
    }

    public static final boolean StateIsCharState(int index)
    { 
        return index < 7; 
    }
    
    public static final int kNumPosSlotBits = 6;
    public static final int kDicLogSizeMin = 0;
    // public static final int kDicLogSizeMax = 28;
    // public static final int kDistTableSizeMax = kDicLogSizeMax * 2;
    
    public static final int kNumLenToPosStatesBits = 2; // it's for speed optimization
    public static final int kNumLenToPosStates = 1 << kNumLenToPosStatesBits;
    
    public static final int kMatchMinLen = 2;
    
    public static final int GetLenToPosState(int len)
    {
        len -= kMatchMinLen;
        if (len < kNumLenToPosStates)
            return len;
        return (int)(kNumLenToPosStates - 1);
    }
    
    public static final int kNumAlignBits = 4;
    public static final int kAlignTableSize = 1 << kNumAlignBits;
    public static final int kAlignMask = (kAlignTableSize - 1);
    
    public static final int kStartPosModelIndex = 4;
    public static final int kEndPosModelIndex = 14;
    public static final int kNumPosModels = kEndPosModelIndex - kStartPosModelIndex;
    
    public static final  int kNumFullDistances = 1 << (kEndPosModelIndex / 2);
    
    public static final  int kNumLitPosStatesBitsEncodingMax = 4;
    public static final  int kNumLitContextBitsMax = 8;
    
    public static final  int kNumPosStatesBitsMax = 4;
    public static final  int kNumPosStatesMax = (1 << kNumPosStatesBitsMax);
    public static final  int kNumPosStatesBitsEncodingMax = 4;
    public static final  int kNumPosStatesEncodingMax = (1 << kNumPosStatesBitsEncodingMax);
    
    public static final  int kNumLowLenBits = 3;
    public static final  int kNumMidLenBits = 3;
    public static final  int kNumHighLenBits = 8;
    public static final  int kNumLowLenSymbols = 1 << kNumLowLenBits;
    public static final  int kNumMidLenSymbols = 1 << kNumMidLenBits;
    public static final  int kNumLenSymbols = kNumLowLenSymbols + kNumMidLenSymbols +
            (1 << kNumHighLenBits);
    public static final  int kMatchMaxLen = kMatchMinLen + kNumLenSymbols - 1;
}