CliFx/CliFx.Benchmarks/Benchmarks.SystemCommandLine.cs

using System.CommandLine;
using System.CommandLine.Invocation;
using System.Threading.Tasks;
using BenchmarkDotNet.Attributes;

namespace CliFx.Benchmarks
{
    public partial class Benchmarks
    {
        public class SystemCommandLineCommand
        {
            public static int ExecuteHandler(string s, int i, bool b) => 0;

            public Task<int> ExecuteAsync(string[] args)
            {
                var command = new RootCommand
                {
                    new Option(new[] {"--str", "-s"})
                    {
                        Argument = new Argument<string?>()
                    },
                    new Option(new[] {"--int", "-i"})
                    {
                        Argument = new Argument<int>()
                    },
                    new Option(new[] {"--bool", "-b"})
                    {
                        Argument = new Argument<bool>()
                    }
                };

                command.Handler = CommandHandler.Create(
                    typeof(SystemCommandLineCommand).GetMethod(nameof(ExecuteHandler))!
                );

                return command.InvokeAsync(args);
            }
        }

        [Benchmark(Description = "System.CommandLine")]
        public async Task<int> ExecuteWithSystemCommandLine() =>
            await new SystemCommandLineCommand().ExecuteAsync(Arguments);
    }
}