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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;
use Composer\Repository\RepositorySet;
/**
* @author Nils Adermann <naderman@naderman.de>
* @implements \IteratorAggregate<Rule>
* @internal
* @final
*/
class RuleSet implements \IteratorAggregate, \Countable
{
// highest priority => lowest number
public const TYPE_PACKAGE = 0;
public const TYPE_REQUEST = 1;
public const TYPE_LEARNED = 4;
/**
* READ-ONLY: Lookup table for rule id to rule object
*
* @var array<int, Rule>
*/
public $ruleById = [];
const TYPES = [
self::TYPE_PACKAGE => 'PACKAGE',
self::TYPE_REQUEST => 'REQUEST',
self::TYPE_LEARNED => 'LEARNED',
];
/** @var array<self::TYPE_*, Rule[]> */
protected $rules;
/** @var 0|positive-int */
protected $nextRuleId = 0;
/** @var array<int|string, Rule|Rule[]> */
protected $rulesByHash = [];
public function __construct()
{
foreach ($this->getTypes() as $type) {
$this->rules[$type] = [];
}
}
/**
* @param self::TYPE_* $type
*/
public function add(Rule $rule, $type): void
{
if (!isset(self::TYPES[$type])) {
throw new \OutOfBoundsException('Unknown rule type: ' . $type);
}
$hash = $rule->getHash();
// Do not add if rule already exists
if (isset($this->rulesByHash[$hash])) {
$potentialDuplicates = $this->rulesByHash[$hash];
if (\is_array($potentialDuplicates)) {
foreach ($potentialDuplicates as $potentialDuplicate) {
if ($rule->equals($potentialDuplicate)) {
return;
}
}
} else {
if ($rule->equals($potentialDuplicates)) {
return;
}
}
}
if (!isset($this->rules[$type])) {
$this->rules[$type] = [];
}
$this->rules[$type][] = $rule;
$this->ruleById[$this->nextRuleId] = $rule;
$rule->setType($type);
$this->nextRuleId++;
if (!isset($this->rulesByHash[$hash])) {
$this->rulesByHash[$hash] = $rule;
} elseif (\is_array($this->rulesByHash[$hash])) {
$this->rulesByHash[$hash][] = $rule;
} else {
$originalRule = $this->rulesByHash[$hash];
$this->rulesByHash[$hash] = [$originalRule, $rule];
}
}
public function count(): int
{
return $this->nextRuleId;
}
public function ruleById(int $id): Rule
{
return $this->ruleById[$id];
}
/** @return array<self::TYPE_*, Rule[]> */
public function getRules(): array
{
return $this->rules;
}
public function getIterator(): RuleSetIterator
{
return new RuleSetIterator($this->getRules());
}
/**
* @param self::TYPE_*|array<self::TYPE_*> $types
*/
public function getIteratorFor($types): RuleSetIterator
{
if (!\is_array($types)) {
$types = [$types];
}
$allRules = $this->getRules();
/** @var array<self::TYPE_*, Rule[]> $rules */
$rules = [];
foreach ($types as $type) {
$rules[$type] = $allRules[$type];
}
return new RuleSetIterator($rules);
}
/**
* @param array<self::TYPE_*>|self::TYPE_* $types
*/
public function getIteratorWithout($types): RuleSetIterator
{
if (!\is_array($types)) {
$types = [$types];
}
$rules = $this->getRules();
foreach ($types as $type) {
unset($rules[$type]);
}
return new RuleSetIterator($rules);
}
/**
* @return array{self::TYPE_PACKAGE, self::TYPE_REQUEST, self::TYPE_LEARNED}
*/
public function getTypes(): array
{
$types = self::TYPES;
return array_keys($types);
}
public function getPrettyString(?RepositorySet $repositorySet = null, ?Request $request = null, ?Pool $pool = null, bool $isVerbose = false): string
{
$string = "\n";
foreach ($this->rules as $type => $rules) {
$string .= str_pad(self::TYPES[$type], 8, ' ') . ": ";
foreach ($rules as $rule) {
$string .= ($repositorySet && $request && $pool ? $rule->getPrettyString($repositorySet, $request, $pool, $isVerbose) : $rule)."\n";
}
$string .= "\n\n";
}
return $string;
}
public function __toString(): string
{
return $this->getPrettyString();
}
}