Eccelerators.Cli

src/CommandDispatcher.lvt

namespace Eccelerators.Cli

using Livt.IO

/**
 * Executes a registry wired before processing begins. One caller serializes
 * Dispatch with CLI input and output; only this component completes commands.
 */
component CommandDispatcher<LINE_STORAGE: IRam<byte> & new() = Ram<byte, 64, MemoryStyle.Block>,
	OUTPUT_STORAGE: IRam<byte> & new() = Ram<byte, 64, MemoryStyle.Block>>
{
	// Borrowed terminal and immutable registry topology; no command names here.
	cli: Cli<LINE_STORAGE, OUTPUT_STORAGE>
	registry: ICommandRegistry

	/**
	 * Borrows a CLI with matching storage types and an immutable command registry.
	 * The owner serializes dispatch with input/output and keeps both dependencies alive.
	 */
	new(cli: Cli<LINE_STORAGE, OUTPUT_STORAGE>, registry: ICommandRegistry)
	{
		this.cli = cli
		this.registry = registry
	}

	/**
	 * Completes input only after its entire response is accepted. A blocked
	 * response leaves input pending for retry through the same registered chain.
	 */
	public fn Dispatch()
	{
		if (!this.cli.HasCommand()) {
			return
		}

		if (this.registry.TryRespond()) {
			this.cli.CompleteCommand()
		}
	}
}