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<?php |
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namespace Cerbero\LaravelEnum; |
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use Illuminate\Support\Str; |
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/** |
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* The enums parser. |
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* |
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*/ |
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class Parser |
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{ |
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const SEPARATOR_ENUM = '|'; |
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const SEPARATOR_PART = '='; |
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private $key = 1; |
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/** |
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* Parse the enums definition |
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* |
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* @param string $definition |
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* @param bool $numeric |
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* @param bool $bitwise |
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* @return array |
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*/ |
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public function parseDefinition(string $definition, bool $numeric = false, bool $bitwise = false) : array |
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{ |
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$enums = explode(static::SEPARATOR_ENUM, $definition); |
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return array_map(function (string $enum) use ($numeric, $bitwise) { |
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$parts = explode(static::SEPARATOR_PART, $enum); |
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if ($numeric) { |
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$parts = $this->addNumericKey($parts); |
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} elseif ($bitwise) { |
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$parts = $this->addBitwiseKey($parts); |
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} |
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return $this->hydrateEnumDefinition($parts); |
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}, $enums); |
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} |
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/** |
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* Retrieve the hydrated enum definition |
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* |
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* @param array $parts |
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* @return EnumDefinition |
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*/ |
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private function hydrateEnumDefinition(array $parts) : EnumDefinition |
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{ |
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return tap(new EnumDefinition, function ($enumDefinition) use ($parts) { |
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$enumDefinition->name = $parts[0]; |
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$enumDefinition->key = isset($parts[1]) ? $this->parseValue($parts[1]) : Str::lower($parts[0]); |
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$enumDefinition->value = isset($parts[2]) ? $this->parseValue($parts[2]) : null; |
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}); |
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} |
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/** |
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* Add a numeric enum key to the parts. |
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* |
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* @param array $parts |
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* @return array |
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*/ |
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private function addNumericKey(array $parts) |
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{ |
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array_splice($parts, 1, 0, $this->key); |
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$this->key++; |
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return $parts; |
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} |
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/** |
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* Add a bitwise enum key to the parts. |
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* |
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* @param array $parts |
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* @return array |
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*/ |
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private function addBitwiseKey(array $parts) |
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{ |
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array_splice($parts, 1, 0, $this->key); |
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$this->key *= 2; |
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return $parts; |
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} |
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/** |
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* Parse the given variable to retrieve its actual value |
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* |
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* @param mixed $value |
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* @return mixed |
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*/ |
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public function parseValue($value) |
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{ |
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if ($value === null || $value === '') { |
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return null; |
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} |
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// Return floats, integers, booleans or arrays if possible |
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if (null !== $decoded = json_decode($value, true)) { |
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return $decoded; |
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} |
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return $value; |
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} |
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} |
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