# Command line action, passed after `nitpm`
abstract class Command

	# Short name of the command, specified in the command line
	fun name: String is abstract

	# Short usage description
	fun usage: String is abstract

	# Command description
	fun description: String is abstract

	# Apply this command consiering the `args` that follow
	fun apply(args: Array[String]) do end

	private var all_commands: Map[String, Command]

	init do all_commands[name] = self

	# Print the help message for this command
	fun print_local_help
	do
		print "usage: {usage}"
		print ""
		print "  {description}"
	end
end