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Added conversion methods To and ToEnum for fast conversions.

pull/83/head
David Hall 2019-07-13 16:27:46 -06:00
parent e63b1b3a47
commit 379e23ccb9
1 changed files with 66 additions and 1 deletions
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67
Core/Extensions/EnumExtensions.cs
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@ -1,7 +1,6 @@
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Linq;
namespace Vanara.Extensions
@ -160,6 +159,72 @@ namespace Vanara.Extensions
return ret;
}
/// <summary>Converts an enumerated value to another fixed type.</summary>
/// <typeparam name="TEnum">The enumerated type.</typeparam>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <param name="value">The value to convert.</param>
/// <returns>The converted value.</returns>
/// <exception cref="System.ArgumentException">The size of TResult cannot be smaller than the size of TEnum.</exception>
public static TResult To<TEnum, TResult>(this TEnum value) where TEnum : unmanaged, System.Enum where TResult : unmanaged, IConvertible
{
unsafe
{
if (sizeof(TResult) < sizeof(TEnum)) throw new ArgumentException("The size of TResult cannot be smaller than the size of TEnum.");
return *(TResult*)(void*)&value;
}
}
/// <summary>Converts a fixed type to an enumerated value.</summary>
/// <typeparam name="TValue">The type of the value to convert.</typeparam>
/// <typeparam name="TEnum">The enumerated type.</typeparam>
/// <param name="value">The value to convert.</param>
/// <returns>The converted value.</returns>
/// <exception cref="System.ArgumentException">The size of TEnum cannot be smaller than the size of TValue.</exception>
public static TEnum ToEnum<TValue, TEnum>(this TValue value) where TEnum : unmanaged, System.Enum where TValue : unmanaged, IConvertible
{
unsafe
{
if (sizeof(TEnum) < sizeof(TValue)) throw new ArgumentException("The size of TEnum cannot be smaller than the size of TValue.");
return *(TEnum*)(void*)&value;
}
}
/// <summary>Converts a fixed type to an enumerated value.</summary>
/// <typeparam name="TEnum">The enumerated type.</typeparam>
/// <param name="value">The value to convert.</param>
/// <returns>The converted value.</returns>
public static TEnum ToEnum<TEnum>(this byte value) where TEnum : unmanaged, System.Enum => ToEnum<byte, TEnum>(value);
/// <summary>Converts a fixed type to an enumerated value.</summary>
/// <typeparam name="TEnum">The enumerated type.</typeparam>
/// <param name="value">The value to convert.</param>
/// <returns>The converted value.</returns>
public static TEnum ToEnum<TEnum>(this sbyte value) where TEnum : unmanaged, System.Enum => ToEnum<sbyte, TEnum>(value);
/// <summary>Converts a fixed type to an enumerated value.</summary>
/// <typeparam name="TEnum">The enumerated type.</typeparam>
/// <param name="value">The value to convert.</param>
/// <returns>The converted value.</returns>
public static TEnum ToEnum<TEnum>(this ushort value) where TEnum : unmanaged, System.Enum => ToEnum<ushort, TEnum>(value);
/// <summary>Converts a fixed type to an enumerated value.</summary>
/// <typeparam name="TEnum">The enumerated type.</typeparam>
/// <param name="value">The value to convert.</param>
/// <returns>The converted value.</returns>
public static TEnum ToEnum<TEnum>(this short value) where TEnum : unmanaged, System.Enum => ToEnum<short, TEnum>(value);
/// <summary>Converts a fixed type to an enumerated value.</summary>
/// <typeparam name="TEnum">The enumerated type.</typeparam>
/// <param name="value">The value to convert.</param>
/// <returns>The converted value.</returns>
public static TEnum ToEnum<TEnum>(this uint value) where TEnum : unmanaged, System.Enum => ToEnum<uint, TEnum>(value);
/// <summary>Converts a fixed type to an enumerated value.</summary>
/// <typeparam name="TEnum">The enumerated type.</typeparam>
/// <param name="value">The value to convert.</param>
/// <returns>The converted value.</returns>
public static TEnum ToEnum<TEnum>(this int value) where TEnum : unmanaged, System.Enum => ToEnum<int, TEnum>(value);
/// <summary>Checks if <typeparamref name="T"/> represents an enumeration and throws an exception if not.</summary>
/// <typeparam name="T">The <see cref="Type"/> to validate.</typeparam>
/// <exception cref="System.ArgumentException"></exception>