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Make Counter a generic & use a 32-bit counter instead

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FICTURE7 2021-04-10 14:54:24 +04:00
parent 4478a32114
commit 6c28be13a8
5 changed files with 55 additions and 37 deletions
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42
ARMeilleure/Common/Counter.cs
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@ -1,20 +1,23 @@
namespace ARMeilleure.Common
using System;
namespace ARMeilleure.Common
{
/// <summary>
/// Represents an 8-bit counter.
/// Represents a numeric counter.
/// </summary>
class Counter
/// <typeparam name="T">Type of the counter</typeparam>
class Counter<T> where T : unmanaged
{
private readonly int _index;
private readonly EntryTable<byte> _countTable;
private readonly EntryTable<T> _countTable;
/// <summary>
/// Initializes a new instance of the <see cref="Counter"/> class from the specified
/// <see cref="EntryTable{byte}"/> instance and index.
/// Initializes a new instance of the <see cref="Counter{T}"/> class from the specified
/// <see cref="EntryTable{T}"/> instance and index.
/// </summary>
/// <param name="countTable"><see cref="EntryTable{byte}"/> instance</param>
/// <param name="index">Index in the <see cref="EntryTable{TEntry}"/></param>
private Counter(EntryTable<byte> countTable, int index)
/// <param name="index">Index in the <see cref="EntryTable{T}"/></param>
private Counter(EntryTable<T> countTable, int index)
{
_countTable = countTable;
_index = index;
@ -23,7 +26,7 @@
/// <summary>
/// Gets a reference to the value of the counter.
/// </summary>
public ref byte Value => ref _countTable.GetValue(_index);
public ref T Value => ref _countTable.GetValue(_index);
/// <summary>
/// Tries to create a <see cref="Counter"/> instance from the specified <see cref="EntryTable{byte}"/> instance.
@ -31,11 +34,28 @@
/// <param name="countTable"><see cref="EntryTable{TEntry}"/> from which to create the <see cref="Counter"/></param>
/// <param name="counter"><see cref="Counter"/> instance if success; otherwise <see langword="null"/></param>
/// <returns><see langword="true"/> if success; otherwise <see langword="false"/></returns>
public static bool TryCreate(EntryTable<byte> countTable, out Counter counter)
/// <exception cref="ArgumentNullException"><paramref name="countTable"/> is <see langword="null"/></exception>
/// <exception cref="ArgumentException"><typeparamref name="T"/> is unsupported</exception>
public static bool TryCreate(EntryTable<T> countTable, out Counter<T> counter)
{
if (countTable == null)
{
throw new ArgumentNullException(nameof(countTable));
}
if (typeof(T) != typeof(byte) && typeof(T) != typeof(sbyte) &&
typeof(T) != typeof(short) && typeof(T) != typeof(ushort) &&
typeof(T) != typeof(int) && typeof(T) != typeof(uint) &&
typeof(T) != typeof(long) && typeof(T) != typeof(ulong) &&
typeof(T) != typeof(nint) && typeof(T) != typeof(nuint) &&
typeof(T) != typeof(float) && typeof(T) != typeof(double))
{
throw new ArgumentException("Counter does not support the specified type", nameof(countTable));
}
if (countTable.TryAllocate(out int index))
{
counter = new Counter(countTable, index);
counter = new Counter<T>(countTable, index);
return true;
}