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using System;
namespace Ryujinx.Memory.Range
{
/// <summary>
/// Range of memory composed of an address and size.
/// </summary>
public readonly struct HostMemoryRange : IEquatable<HostMemoryRange>
{
/// <summary>
/// An empty memory range, with a null address and zero size.
/// </summary>
public static HostMemoryRange Empty => new(0, 0);
/// <summary>
/// Start address of the range.
/// </summary>
public nuint Address { get; }
/// <summary>
/// Size of the range in bytes.
/// </summary>
public ulong Size { get; }
/// <summary>
/// Address where the range ends (exclusive).
/// </summary>
public nuint EndAddress => Address + (nuint)Size;
/// <summary>
/// Creates a new memory range with the specified address and size.
/// </summary>
/// <param name="address">Start address</param>
/// <param name="size">Size in bytes</param>
public HostMemoryRange(nuint address, ulong size)
{
Address = address;
Size = size;
}
/// <summary>
/// Checks if the range overlaps with another.
/// </summary>
/// <param name="other">The other range to check for overlap</param>
/// <returns>True if the ranges overlap, false otherwise</returns>
public bool OverlapsWith(HostMemoryRange other)
{
nuint thisAddress = Address;
nuint thisEndAddress = EndAddress;
nuint otherAddress = other.Address;
nuint otherEndAddress = other.EndAddress;
return thisAddress < otherEndAddress && otherAddress < thisEndAddress;
}
public override bool Equals(object obj)
{
return obj is HostMemoryRange other && Equals(other);
}
public bool Equals(HostMemoryRange other)
{
return Address == other.Address && Size == other.Size;
}
public override int GetHashCode()
{
return HashCode.Combine(Address, Size);
}
public static bool operator ==(HostMemoryRange left, HostMemoryRange right)
{
return left.Equals(right);
}
public static bool operator !=(HostMemoryRange left, HostMemoryRange right)
{
return !(left == right);
}
}
}
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