PeacefulBit\Packet\Context\Stack

Complexity

Total Complexity

5

Size/Duplication

Total Lines	30
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Importance

Changes	1
Bugs	0	Features	1

3 Methods

Rating	Name	Duplication	Size	Complexity
A	push()	0	4	1
A	shift()	0	8	2
A	shiftGroup()	0	11	2

<?php

namespace PeacefulBit\Packet\Context;

use function Nerd\Common\Arrays\append;
use function Nerd\Common\Functional\tail;

use PeacefulBit\Packet\Exception\RuntimeException;

class Stack
{
    private $stack = [];

    public function push($value)
    {
        array_push($this->stack, $value);
    }

    public function shift()
    {
        if (empty($this->stack)) {
            throw new RuntimeException("Stack is empty");
        }

        return array_pop($this->stack);
    }

    public function shiftGroup($number)
    {
        $iter = tail(function ($left, $acc) use (&$iter) {
            if ($left == 0) {
                return array_reverse($acc);
            }
            return $iter($left - 1, append($acc, $this->shift()));
        });

        return $iter($number, []);
    }
}