Viewing file:  RuleSetIterator.php (2.54 KB) -rw-r--r--
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<?php declare(strict_types=1);
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
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]);
}
}
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