<?php

namespace Composer\DependencyResolver;

/**
 * @author Nils Adermann <naderman@naderman.de>
 * @implements \Iterator<RuleSet::TYPE_*, Rule>
 */
class RuleSetIterator implements \Iterator
{
    /** @var array<RuleSet::TYPE_*, Rule[]> */
    protected $rules;

    /** @var array<RuleSet::TYPE_*> */
    protected $types;

    /** @var int */
    protected $currentOffset;

    /** @var RuleSet::TYPE_*|-1 */
    protected $currentType;

    /** @var int */
    protected $currentTypeOffset;

    /**
     * @param array<RuleSet::TYPE_*, Rule[]> $rules
     */
    public function __construct(array $rules)
    {
        $this->rules = $rules;
        $this->types = array_keys($rules);
        sort($this->types);

        $this->rewind();
    }

    public function current(): Rule
    {
        return $this->rules[$this->currentType][$this->currentOffset];
    }

    /**
     * @return RuleSet::TYPE_*|-1
     */
    public function key(): int
    {
        return $this->currentType;
    }

    public function next(): void
    {
        $this->currentOffset++;

        if (!isset($this->rules[$this->currentType])) {
            return;
        }

        if ($this->currentOffset >= \count($this->rules[$this->currentType])) {
            $this->currentOffset = 0;

            do {
                $this->currentTypeOffset++;

                if (!isset($this->types[$this->currentTypeOffset])) {
                    $this->currentType = -1;
                    break;
                }

                $this->currentType = $this->types[$this->currentTypeOffset];
            } while (0 === \count($this->rules[$this->currentType]));
        }
    }

    public function rewind(): void
    {
        $this->currentOffset = 0;

        $this->currentTypeOffset = -1;
        $this->currentType = -1;

        do {
            $this->currentTypeOffset++;

            if (!isset($this->types[$this->currentTypeOffset])) {
                $this->currentType = -1;
                break;
            }

            $this->currentType = $this->types[$this->currentTypeOffset];
        } while (0 === \count($this->rules[$this->currentType]));
    }

    public function valid(): bool
    {
        return isset($this->rules[$this->currentType], $this->rules[$this->currentType][$this->currentOffset]);
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----Njc5Mzk3NTk0MTQxMTc5NiAzMDkwNzUzMDcyNjc3Mzg2IDI5OTA3MDY0Mjk3MzkzOTk=