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106 lines
2.6 KiB
PHP
106 lines
2.6 KiB
PHP
<?php declare(strict_types=1);
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\DependencyResolver;
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/**
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* @author Nils Adermann <naderman@naderman.de>
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* @implements \Iterator<RuleSet::TYPE_*, Rule>
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*/
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class RuleSetIterator implements \Iterator
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{
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/** @var array<RuleSet::TYPE_*, Rule[]> */
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protected $rules;
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/** @var array<RuleSet::TYPE_*> */
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protected $types;
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/** @var int */
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protected $currentOffset;
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/** @var RuleSet::TYPE_*|-1 */
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protected $currentType;
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/** @var int */
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protected $currentTypeOffset;
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/**
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* @param array<RuleSet::TYPE_*, Rule[]> $rules
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*/
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public function __construct(array $rules)
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{
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$this->rules = $rules;
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$this->types = array_keys($rules);
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sort($this->types);
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$this->rewind();
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}
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public function current(): Rule
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{
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return $this->rules[$this->currentType][$this->currentOffset];
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}
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/**
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* @return RuleSet::TYPE_*|-1
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*/
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public function key(): int
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{
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return $this->currentType;
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}
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public function next(): void
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{
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$this->currentOffset++;
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if (!isset($this->rules[$this->currentType])) {
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return;
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}
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if ($this->currentOffset >= \count($this->rules[$this->currentType])) {
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$this->currentOffset = 0;
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do {
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$this->currentTypeOffset++;
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if (!isset($this->types[$this->currentTypeOffset])) {
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$this->currentType = -1;
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break;
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}
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$this->currentType = $this->types[$this->currentTypeOffset];
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} while (isset($this->types[$this->currentTypeOffset]) && !\count($this->rules[$this->currentType]));
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}
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}
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public function rewind(): void
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{
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$this->currentOffset = 0;
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$this->currentTypeOffset = -1;
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$this->currentType = -1;
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do {
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$this->currentTypeOffset++;
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if (!isset($this->types[$this->currentTypeOffset])) {
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$this->currentType = -1;
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break;
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}
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$this->currentType = $this->types[$this->currentTypeOffset];
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} while (isset($this->types[$this->currentTypeOffset]) && !\count($this->rules[$this->currentType]));
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}
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public function valid(): bool
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{
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return isset($this->rules[$this->currentType], $this->rules[$this->currentType][$this->currentOffset]);
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}
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}
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