FastEnum.Extensions.Generator 1.0.0-preview.1

FastEnumToString

Source Generator generating ToString extension methods for any enums.

Usage

Use the [Extensions] on your enums, so the source generator will genrate the extensions for those enums:

Example

using FastEnum;

namespace ToStringExample;

public class NestingClass<T, K>
    where T : struct
    where K : class, new()
{
    [Extensions]
    public enum NestedInClassEnum // Warning: 'ETS1003' Extension generation for enum's nested in generic types are restricted.
    {
        None
    }
}

[Extensions]
public enum Color : System.Byte
{
    Red,
    Green,
    Blue,
}

[Extensions, Flags]
public enum Options
{
    None = 0,
    ToString = 1,
    Parse = 2,
    HasFlag = 4,
}

Something similar will be generated:

// <auto-generated/>

#nullable enable annotations
#nullable disable warnings

namespace ToStringExample
{
    [global::System.CodeDom.Compiler.GeneratedCode("FastEnum.Extensions.Generator.EnumToStringGenerator", "1.0.0")]
    public static class ColorExtensions
    {
        private static readonly byte[] _underlyingValues = { ... }

        private static readonly Color[] _values = { ... }

        private static readonly string[] _names = { ... }

        public const int MembersCount = 3;

        public static ToStringExample.Color[] GetValues() => _values;

        public static byte[] GetUnderlyingValues() => _underlyingValues;

        public static string[] GetNames() => _names;

        public static string FastToString(this Color value) { ... }

        public static string FastToString(this Color value, string? format) { ... }

        public static bool IsDefined(this Color value) { ... }
}