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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celemas\Sire\Coercer; |
| 6 | |
| 7 | use Celemas\Sire\Coercion; |
| 8 | use Celemas\Sire\CoercionMode; |
| 9 | use Celemas\Sire\Contract; |
| 10 | use Celemas\Sire\Failure; |
| 11 | use Override; |
| 12 | use Stringable; |
| 13 | |
| 14 | /** @api */ |
| 15 | final class Str implements Contract\Coercer |
| 16 | { |
| 17 | public string $message { |
| 18 | get => '{label} must be a string'; |
| 19 | } |
| 20 | |
| 21 | #[Override] |
| 22 | public function coerce(mixed $pristine, CoercionMode $mode): Contract\Coercion |
| 23 | { |
| 24 | if ($mode === CoercionMode::Strict) { |
| 25 | return self::coerceStrict($pristine); |
| 26 | } |
| 27 | |
| 28 | if (!self::isCoercible($pristine)) { |
| 29 | return self::invalid($pristine); |
| 30 | } |
| 31 | |
| 32 | $value = self::toString($pristine); |
| 33 | |
| 34 | return new Coercion($value, $pristine, empty: self::isEmpty($value)); |
| 35 | } |
| 36 | |
| 37 | private static function coerceStrict(mixed $pristine): Coercion |
| 38 | { |
| 39 | if ($pristine === null) { |
| 40 | return new Coercion(null, null, empty: true); |
| 41 | } |
| 42 | |
| 43 | return is_string($pristine) |
| 44 | ? new Coercion($pristine, $pristine, empty: self::isEmpty($pristine)) |
| 45 | : self::invalid($pristine); |
| 46 | } |
| 47 | |
| 48 | private static function invalid(mixed $pristine): Coercion |
| 49 | { |
| 50 | return new Coercion( |
| 51 | $pristine, |
| 52 | $pristine, |
| 53 | Failure::invalid(), |
| 54 | ); |
| 55 | } |
| 56 | |
| 57 | private static function isCoercible(mixed $value): bool |
| 58 | { |
| 59 | return ( |
| 60 | $value === null |
| 61 | || is_string($value) |
| 62 | || is_int($value) |
| 63 | || is_float($value) |
| 64 | || $value instanceof Stringable |
| 65 | ); |
| 66 | } |
| 67 | |
| 68 | private static function toString(mixed $value): ?string |
| 69 | { |
| 70 | return $value === null ? null : (string) $value; |
| 71 | } |
| 72 | |
| 73 | private static function isEmpty(?string $value): bool |
| 74 | { |
| 75 | return $value === null || $value === ''; |
| 76 | } |
| 77 | } |