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using System;
namespace Ryujinx.Horizon.Common
{
public struct Result : IEquatable<Result>
{
private const int ModuleBits = 9;
private const int DescriptionBits = 13;
private const int ModuleMax = 1 << ModuleBits;
private const int DescriptionMax = 1 << DescriptionBits;
public static Result Success { get; } = new Result(0, 0);
public int ErrorCode { get; }
public readonly bool IsSuccess => ErrorCode == 0;
public readonly bool IsFailure => ErrorCode != 0;
public readonly int Module => ErrorCode & (ModuleMax - 1);
public readonly int Description => (ErrorCode >> ModuleBits) & (DescriptionMax - 1);
public readonly string PrintableResult => $"{2000 + Module:D4}-{Description:D4}";
public Result(int module, int description)
{
if ((uint)module >= ModuleMax)
{
throw new ArgumentOutOfRangeException(nameof(module));
}
if ((uint)description >= DescriptionMax)
{
throw new ArgumentOutOfRangeException(nameof(description));
}
ErrorCode = module | (description << ModuleBits);
}
public Result(int errorCode)
{
ErrorCode = errorCode;
}
public readonly override bool Equals(object obj)
{
return obj is Result result && result.Equals(this);
}
public readonly bool Equals(Result other)
{
return other.ErrorCode == ErrorCode;
}
public readonly override int GetHashCode()
{
return ErrorCode;
}
public static bool operator ==(Result lhs, Result rhs)
{
return lhs.Equals(rhs);
}
public static bool operator !=(Result lhs, Result rhs)
{
return !lhs.Equals(rhs);
}
public readonly bool InRange(int minInclusive, int maxInclusive)
{
return (uint)(Description - minInclusive) <= (uint)(maxInclusive - minInclusive);
}
public void AbortOnSuccess()
{
if (IsSuccess)
{
ThrowInvalidResult();
}
}
public void AbortOnFailure()
{
if (this == KernelResult.ThreadTerminating)
{
throw new ThreadTerminatedException();
}
AbortUnless(Success);
}
public void AbortUnless(Result result)
{
if (this != result)
{
ThrowInvalidResult();
}
}
public void AbortUnless(Result result, Result result2)
{
if (this != result && this != result2)
{
ThrowInvalidResult();
}
}
private void ThrowInvalidResult()
{
throw new InvalidResultException(this);
}
public readonly override string ToString()
{
if (ResultNames.TryGet(ErrorCode, out string name))
{
return name;
}
return PrintableResult;
}
}
}
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