Stadly\PasswordPolice\Formatter\Coder

Complexity

Total Complexity

7

Size/Duplication

Total Lines	62
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	code()	0	13	3
A	applyInternal()	0	7	2
A	applyCurrent()	0	3	1

<?php

declare(strict_types=1);

namespace Stadly\PasswordPolice\Formatter;

use SplObjectStorage;
use Stadly\PasswordPolice\CharTree;
use Stadly\PasswordPolice\CodeMap;
use Stadly\PasswordPolice\Formatter;

final class Coder implements Formatter
{
    use Chaining;

    /**
     * @var CodeMap Code map for coding character trees.
     */
    private $codeMap;

    /**
     * @var SplObjectStorage Memoization for already coded character trees.
     */
    private $codeMemoization;

    /**
     * @param CodeMap $codeMap Code map for coding character trees.
     */
    public function __construct(CodeMap $codeMap)
    {
        $this->codeMap = $codeMap;
        $this->codeMemoization = new SplObjectStorage();
    }

    /**
     * @param CharTree $charTree Character tree to format.
     * @return CharTree Coded variant of the character tree.
     */
    protected function applyCurrent(CharTree $charTree): CharTree
    {
        return CharTree::fromArray($this->applyInternal($charTree));
    }

    /**
     * @param CharTree $charTree Character tree to format.
     * @return CharTree[] Coded variants of the character tree.
     */
    private function applyInternal(CharTree $charTree): array
    {
        if (!isset($this->codeMemoization[$charTree])) {
            $this->codeMemoization[$charTree] = $this->code($charTree);
        }

        return $this->codeMemoization[$charTree];
    }

    /**
     * @param CharTree $charTree Character tree to format.
     * @return CharTree[] Coded variants of the character tree. Memoization is not used.
     */
    private function code(CharTree $charTree): array
    {
        $charTrees = [];

        foreach ($this->codeMap->getMap($charTree) as $char => $codedChars) {
            $branches = $this->applyInternal($charTree->getBranchesAfterRoot((string)$char));

            foreach ($codedChars as $codedChar) {
                $charTrees[] = CharTree::fromString($codedChar, $branches);
            }
        }

        return $charTrees;
    }
}