FastEnum.Extensions.Generator

Source Generator for enums to create extension methods with basic functionality.

Usage

Use the [Extensions] on your enums, so it will generate the extensions for those enums:

Feature

• MembersCount (field)
• GetValues
• GetUnderlyingValues
• GetNames
• HasFlag
• IsDefined
• FastToString
• FastToString with format option
• GetDescription
• TryParse (string/System.ReadOnlySpan)
• TryParseIgnoreCase (string/System.ReadOnlySpan)

Note: I'm trying to make the generated code behave the same as the .NET implementation. If you find any differences, please let me know.

Limitations

• Only currently supported .NET versions are supported. See: supported version list
• .NET Framework is not supported
• Generation extensions for enums nested in classes with generic type parameters are not supported.
• Generation extensions for enums nested in multiple classes is not supported.

Example

using FastEnum;

namespace ToStringExample;

public class NestingClass
{
    [Extensions]
    public enum NestedInClassEnum
    {
        None
    }
}

[Extensions, Flags]
public enum Color
{
    [Description("Crimson Red")]
    Red = 0x990000,
    [Display(Name = "Pine", Description = "Pine")]
    Green = 0x166138,
    [EnumMember(Value = "Sky")]
    Blue = 0x87CEEB
}

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