A simple REPL loop for Brigadier.NET

program.cs

using System;
using System.Threading.Tasks;
using Brigadier.NET;
using Brigadier.NET.Builder;
using Brigadier.NET.Exceptions;
using static Brigadier.NET.Arguments;

namespace TestBrigadier
{
	class Program
	{
		static async Task Main(string[] args)
		{
			var dispatcher = new CommandDispatcher<CommandSourceStack>();

			dispatcher.Register(l =>
				l.Literal("foo")
					.Then(a =>
						a.Argument("bar", Integer())
							.Executes(c => {
								Console.WriteLine("Bar is " + GetInteger(c, "bar"));
								return 1;
							})
					)
					.Executes(c => {
						Console.WriteLine("Called foo with no arguments");
						return 1;
					})
			);

			string input = string.Empty;
            Console.Write("> ");
			while (true)
			{
				var key = Console.ReadKey(intercept: true);
				switch (key.Key)
				{
					case ConsoleKey.Escape:
						return;
					case ConsoleKey.Backspace when input.Length > 0:
						input = input.Substring(0, input.Length - 1);
						Console.Write(key.KeyChar);
						Console.Write(' ');
						Console.Write(key.KeyChar);
						break;
					case ConsoleKey.Tab:
					{
						var parseResults = dispatcher.Parse(input, new CommandSourceStack());
						var results = await dispatcher.GetCompletionSuggestions(parseResults);
						Console.WriteLine();
						foreach (var suggestion in results.List)
						{
							Console.Write(new string(' ', parseResults.Reader.Cursor + 2));
							Console.WriteLine(suggestion.Text);
						}
						Console.Write("> " + input);
						break;
					}
					case ConsoleKey.Enter:
						Console.WriteLine();
						try
						{
							dispatcher.Execute(input, new CommandSourceStack());
						}
						catch (CommandSyntaxException e)
						{
							Console.ForegroundColor = ConsoleColor.Red;
							Console.Write(new string(' ', e.Cursor));
							Console.Write("^ ");
							Console.WriteLine(e.Message);
							Console.ForegroundColor = ConsoleColor.White;
						}

						Console.Write("> ");
						input = string.Empty;
						break;
					default:
					{
						if (!char.IsControl(key.KeyChar))
						{
							input += key.KeyChar;
							Console.Write(key.KeyChar);
						}

						break;
					}
				}
			}
		}
	}

	class CommandSourceStack
	{

	}
}