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Copy pathByteMemoryComparer.cs
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134 lines (116 loc) · 3.21 KB
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using System.Diagnostics;
using ReClassNET.Util;
namespace ReClassNET.MemoryScanner.Comparer
{
public class ByteMemoryComparer : IScanComparer
{
public ScanCompareType CompareType { get; }
public byte Value1 { get; }
public byte Value2 { get; }
public int ValueSize => sizeof(byte);
public ByteMemoryComparer(ScanCompareType compareType, byte value1, byte value2)
{
CompareType = compareType;
if (compareType == ScanCompareType.Between || compareType == ScanCompareType.BetweenOrEqual)
{
if (value1 > value2)
{
Utils.Swap(ref value1, ref value2);
}
}
Value1 = value1;
Value2 = value2;
}
public unsafe bool Compare(byte* data, out ScanResult result)
{
result = null;
var value = *data;
bool IsMatch()
{
switch (CompareType)
{
case ScanCompareType.Equal:
return value == Value1;
case ScanCompareType.NotEqual:
return value != Value1;
case ScanCompareType.GreaterThan:
return value > Value1;
case ScanCompareType.GreaterThanOrEqual:
return value >= Value1;
case ScanCompareType.LessThan:
return value < Value1;
case ScanCompareType.LessThanOrEqual:
return value <= Value1;
case ScanCompareType.Between:
return Value1 < value && value < Value2;
case ScanCompareType.BetweenOrEqual:
return Value1 <= value && value <= Value2;
case ScanCompareType.Unknown:
return true;
default:
throw new InvalidCompareTypeException(CompareType);
}
}
if (!IsMatch())
{
return false;
}
result = new ByteScanResult(value);
return true;
}
public unsafe bool Compare(byte* data, ScanResult previous, out ScanResult result)
{
#if DEBUG
Debug.Assert(previous is ByteScanResult);
#endif
return Compare(data, (ByteScanResult)previous, out result);
}
public unsafe bool Compare(byte* data, ByteScanResult previous, out ScanResult result)
{
result = null;
var value = *data;
bool IsMatch()
{
switch (CompareType)
{
case ScanCompareType.Equal:
return value == Value1;
case ScanCompareType.NotEqual:
return value != Value1;
case ScanCompareType.Changed:
return value != previous.Value;
case ScanCompareType.NotChanged:
return value == previous.Value;
case ScanCompareType.GreaterThan:
return value > Value1;
case ScanCompareType.GreaterThanOrEqual:
return value >= Value1;
case ScanCompareType.Increased:
return value > previous.Value;
case ScanCompareType.IncreasedOrEqual:
return value >= previous.Value;
case ScanCompareType.LessThan:
return value < Value1;
case ScanCompareType.LessThanOrEqual:
return value <= Value1;
case ScanCompareType.Decreased:
return value < previous.Value;
case ScanCompareType.DecreasedOrEqual:
return value <= previous.Value;
case ScanCompareType.Between:
return Value1 < value && value < Value2;
case ScanCompareType.BetweenOrEqual:
return Value1 <= value && value <= Value2;
default:
throw new InvalidCompareTypeException(CompareType);
}
}
if (!IsMatch())
{
return false;
}
result = new ByteScanResult(value);
return true;
}
}
}