<?php

namespace Machine;

use Machine\Memory\DataRegisters;
use Machine\Memory\MemoryController;
use Machine\Memory\ProgramMemory;
use Machine\Memory\ToolMemory;

class CNC6600
{
	public DataRegisters $DR;
	public InstructionSet $IS;
	public ToolMemory $TM;
	public ProgramMemory $SPM;
	public ProgramMemory $PPM;
	public MemoryController $SPMC;
	public MemoryController $PPMC;
	public MemoryController $_AMC;


	public function __construct()
	{
		$this->DR = new DataRegisters();
		$this->IS = new InstructionSet($this);
		$this->TM = new ToolMemory();
		$this->SPM = new ProgramMemory();
		$this->PPM = new ProgramMemory();
		$this->SPMC = new MemoryController($this->SPM);
		$this->PPMC = new MemoryController($this->PPM);
		$this->_AMC = $this->PPMC;
	}


	public function loadProgram(int $N): void
	{
		$this->PPMC->loadProgram($N);
		$this->_AMC = $this->PPMC;
	}


	public function step(): void
	{
		if ($this->_AMC === $this->SPMC && count($this->_AMC) === 0) {
			$this->_AMC = $this->PPMC;
		}
		$block = $this->_AMC->next();
		$this->IS->apply($block);
	}


	public function execute(): void
	{
		while ($this->PPMC->ready()) {
			$this->step();
		}
	}


	public function reset(): void
	{
		$this->PPMC->reset();
		$this->SPMC->reset();
	}
}