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<?php |
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declare(strict_types=1); |
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namespace Cerbero\Enum\Services; |
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use ArrayIterator; |
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use IteratorAggregate; |
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use Traversable; |
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use function Cerbero\Enum\className; |
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use function Cerbero\Enum\yieldLines; |
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/** |
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* The use statements collector. |
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* |
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* @implements IteratorAggregate<string, class-string> |
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*/ |
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class UseStatements implements IteratorAggregate |
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{ |
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/** |
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* The regular expression to extract the use statements already present on the enum. |
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* |
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* @var string |
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*/ |
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public const RE_STATEMENT = '~^use\s+([^\s;]+)(?:\s+as\s+([^;]+))?~i'; |
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/** |
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* Instantiate the class. |
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* |
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* @param Inspector<\UnitEnum> $inspector |
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*/ |
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public function __construct( |
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protected Inspector $inspector, |
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protected bool $includeExisting, |
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) {} |
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/** |
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* Retrieve the sorted, iterable use statements. |
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* |
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* @return ArrayIterator<string, class-string> |
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*/ |
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public function getIterator(): Traversable |
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{ |
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$useStatements = $this->all(); |
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asort($useStatements); |
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return new ArrayIterator($useStatements); |
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} |
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/** |
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* Retrieve all the use statements. |
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* |
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* @return array<string, class-string> |
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*/ |
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public function all(): array |
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{ |
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return $this->existing(); |
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} |
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/** |
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* Retrieve the use statements already present on the enum. |
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* |
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* @return array<string, class-string> |
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*/ |
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public function existing(): array |
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{ |
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$useStatements = []; |
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foreach (yieldLines($this->inspector->filename()) as $line) { |
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if (strpos($line, 'enum') === 0) { |
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break; |
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} |
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if (preg_match(static::RE_STATEMENT, $line, $matches)) { |
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$useStatements[$matches[2] ?? className($matches[1])] = $matches[1]; |
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} |
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} |
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/** @var array<string, class-string> */ |
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return $useStatements; |
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} |
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} |
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