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C# StringLiteralGenerator

A C# Source Generator for optimizing UTF-8 binaries.

Original source (manually written):

namespace Sample
{
    partial class Literals
    {
        [StringLiteral.Utf8Attribute("aαあ😊")]
        public static partial System.ReadOnlySpan<byte> S();
    }
}

Generated source:

namespace Sample
{
    partial class Literals
    {
        public static partial System.ReadOnlySpan<byte> S() => new byte[] {97, 206, 177, 227, 129, 130, 240, 159, 152, 138, };
    }
}

• Generates UTF-8 binary data from string literals (UTF-16).
• The UTF-8 data is optimized to avoid allocation. see: C# ReadOnlySpan and static data

NuGet

<Project Sdk="Microsoft.NET.Sdk">

    <PropertyGroup>
        <OutputType>Exe</OutputType>
        <TargetFramework>net5.0</TargetFramework>
    </PropertyGroup>

    <ItemGroup>
        <PackageReference Include="StringLiteralGenerator" Version="1.0.0" />
    </ItemGroup>

</Project>

For versions earlier than .NET 5 SDK RC2 you may also need to add a reference to Microsoft.Net.Compilers.Toolset. So the csproj may look like this:

<Project Sdk="Microsoft.NET.Sdk">

    <PropertyGroup>
        <OutputType>Exe</OutputType>
        <TargetFramework>net5.0</TargetFramework>
    </PropertyGroup>

    <ItemGroup>
        <PackageReference Include="StringLiteralGenerator" Version="1.0.0-preiew" />
        <PackageReference Include="Microsoft.Net.Compilers.Toolset" Version="3.8.0-4.final" PrivateAssets="all" />
    </ItemGroup>

</Project>