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<?php |
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declare(strict_types=1); |
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namespace Cerbero\Enum\Enums; |
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use Cerbero\Enum\Attributes\Meta; |
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use Cerbero\Enum\Concerns\Enumerates; |
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use Generator; |
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use function Cerbero\Enum\camel; |
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use function Cerbero\Enum\parseCaseValue; |
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use function Cerbero\Enum\snake; |
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/** |
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* The backed value when generating new enums. |
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*/ |
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enum Backed |
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{ |
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use Enumerates; |
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#[Meta(label: 'The enum is pure, no values needed')] |
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case pure; |
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#[Meta(label: 'Custom values to assign manually')] |
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case custom; |
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#[Meta(label: 'The name in snake case (case_one)')] |
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case snake; |
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#[Meta(label: 'The name in camel case (caseOne)')] |
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case camel; |
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#[Meta(label: 'The name in kebab case (case-one)')] |
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case kebab; |
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#[Meta(label: 'The name in upper case (CASEONE)')] |
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case upper; |
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#[Meta(label: 'The name in lower case (caseone)')] |
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case lower; |
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#[Meta(label: 'Integer starting from 0 (0, 1, 2...)')] |
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case int0; |
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#[Meta(label: 'Integer starting from 1 (1, 2, 3...)')] |
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case int1; |
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#[Meta(label: 'Bitwise flag (1, 2, 4...)')] |
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case bitwise; |
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/** |
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* Retrieve the given cases, optionally backed by the provided backing strategy. |
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* |
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* @param string[] $cases |
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* @return array<string, string|int|null> |
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* @throws \ValueError |
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*/ |
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public static function backCases(array $cases, ?string $strategy = null): array |
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{ |
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$backed = match (true) { |
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is_string($strategy) => self::fromName($strategy), |
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default => str_contains($cases[0] ?? '', '=') ? self::custom : self::pure, |
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}; |
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return $backed->back($cases); |
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} |
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/** |
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* Retrieve the given cases after backing them. |
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* |
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* @param string[] $cases |
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* @return array<string, string|int|null> |
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*/ |
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public function back(array $cases): array |
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{ |
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$backedCases = []; |
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$pairs = $this->yieldPairs(); |
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foreach ($cases as $case) { |
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$backedCases += $pairs->send($case); |
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$pairs->next(); |
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} |
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return $backedCases; |
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} |
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/** |
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* Yield the case-value pairs. |
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* |
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* @return Generator<int, array<string, string|int|null>> |
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*/ |
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public function yieldPairs(): Generator |
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{ |
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$i = 0; |
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$callback = match ($this) { |
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self::pure => fn(string $name) => [$name => null], |
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self::custom => parseCaseValue(...), |
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self::snake => fn(string $name) => [$name => snake($name)], |
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self::camel => fn(string $name) => [$name => camel($name)], |
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self::kebab => fn(string $name) => [$name => snake($name, '-')], |
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self::upper => fn(string $name) => [$name => strtoupper($name)], |
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self::lower => fn(string $name) => [$name => strtolower($name)], |
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self::int0 => fn(string $name, int $i) => [$name => $i], |
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self::int1 => fn(string $name, int $i) => [$name => $i + 1], |
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self::bitwise => fn(string $name, int $i) => [$name => "1 << {$i}"], |
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}; |
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/** @phpstan-ignore while.alwaysTrue */ |
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while (true) { |
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/** @phpstan-ignore-next-line */ |
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yield $callback(yield, $i++); |
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} |
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} |
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} |
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