PolyFill Exception.Throw... methods using C# 14 static extension methods. #132
Description
Are there plans for adding the ...Exception.Throw...() methods to PolySharp. With C# 14 we can add static extension methods to classes. This would allow a lot of extra methods to be added. Not sure if this is the correct place because it would require C# 14. Maybe only generate this code if the LangVersion is 14+.
Maybe it could be added to CommunityToolkit.Diagnostics.
Example
Suppose this is a .NET Standard class Library. The C# 14 static extensionmethod ThrowIfNull is added to the ArgumentNullException.
using System.Diagnostics.CodeAnalysis;
using System.Runtime.CompilerServices;
namespace ClassLibrary1;
public class Class1 {
public static void Foo(string a) {
ArgumentNullException.ThrowIfNull(a);
}
}
public static class PolyExceptions {
extension(ArgumentNullException) {
public static void ThrowIfNull([NotNull] object? argument,
[CallerArgumentExpression(nameof(argument))] string? paramName = null) {
if (argument is null) {
throw new ArgumentOutOfRangeException(paramName);
}
}
}
}Used this csproj file
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
<LangVersion>preview</LangVersion>
<Nullable>enable</Nullable>
<ImplicitUsings>true</ImplicitUsings>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="PolySharp" Version="1.15.0">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
</ItemGroup>
</Project>