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<?php |
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namespace skrtdev\Prototypes; |
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use Closure, Error; |
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class Prototypes { |
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use Prototypeable; |
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/** |
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* @var array[] |
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*/ |
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protected static array $methods = []; |
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/** |
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* @var Closure[] |
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*/ |
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protected static array $static_methods = []; |
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/** |
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* @var Closure[] |
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*/ |
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protected static array $classes = []; |
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/** |
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* @throws Exception |
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*/ |
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protected static function validateClassMethod(string $class_name, string $name): void{ |
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if(self::isPrototypeable($class_name)){ |
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self::$methods[$class_name] ??= []; |
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self::$static_methods[$class_name] ??= []; |
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if(!method_exists($class_name, $name)){ |
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if(self::classHasPrototypeMethod($class_name, $name)){ |
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throw new Exception("Invalid method name provided for class '$class_name': method '$name' is already a Prototype"); |
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} |
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} |
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else{ |
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throw new Exception("Invalid method name provided for class '$class_name': method '$name' already exists"); |
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} |
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} |
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else{ |
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throw new Exception("Invalid class provided: class '$class_name' is not Prototypeable"); |
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} |
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} |
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/** |
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* @param callable|Closure $callable |
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*/ |
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protected static function normalizeCallable($callable): Closure |
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{ |
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if(!($callable instanceof Closure)){ |
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$callable = Closure::fromCallable($callable); |
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} |
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return $callable; |
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} |
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/** |
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* @param string $class_name |
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* @param string $name |
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* @param callable $fun |
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* @throws Exception |
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*/ |
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public static function addClassMethod(string $class_name, string $name, callable $fun): void |
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{ |
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self::validateClassMethod($class_name, $name); |
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self::$methods[$class_name][$name] = self::normalizeCallable($fun); |
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} |
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/** |
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* @param string $class_name |
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* @param string $name |
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* @param callable $fun |
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* @throws Exception |
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*/ |
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public static function addClassStaticMethod(string $class_name, string $name, callable $fun): void |
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{ |
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self::validateClassMethod($class_name, $name); |
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self::$static_methods[$class_name][$name] = self::normalizeCallable($fun); |
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} |
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/** |
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* @param object $obj |
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* @param string $name |
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* @param array $args |
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* @return mixed |
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*/ |
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public static function call(object $obj, string $name, array $args) |
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{ |
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$class_name = get_class($obj); |
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self::$methods[$class_name] ??= []; |
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if(isset(self::$methods[$class_name][$name])){ |
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$closure = self::$methods[$class_name][$name]; |
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return $closure->call($obj, ...$args); |
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} |
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else{ |
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throw new Error("Call to undefined method $class_name::$name()"); |
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} |
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} |
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/** |
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* @param string $class_name |
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* @param string $name |
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* @param array $args |
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* @return mixed |
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*/ |
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public static function callStatic(string $class_name, string $name, array $args) |
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{ |
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self::$static_methods[$class_name] ??= []; |
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if(isset(self::$static_methods[$class_name][$name])){ |
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$closure = self::$static_methods[$class_name][$name]; |
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return ($closure->bindTo(null, $class_name))(...$args); |
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} |
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else{ |
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throw new Error("Call to undefined static method $class_name::$name()"); |
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} |
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} |
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/** |
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* @param string $class_name |
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* @return bool |
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* @throws Exception |
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*/ |
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public static function isPrototypeable(string $class_name): bool |
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{ |
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return self::$classes[$class_name] ??= in_array(Prototypeable::class, self::getClassTraits($class_name)); |
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} |
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/** |
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* @param string $class_name |
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* @param string $method_name |
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* @return bool |
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*/ |
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public static function classHasPrototypeMethod(string $class_name, string $method_name): bool |
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{ |
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return isset(self::$methods[$class_name][$method_name]) || isset(self::$static_methods[$class_name][$method_name]); |
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} |
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/** |
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* @param string $class |
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* @return array |
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* @throws Exception |
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*/ |
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protected static function getClassTraits(string $class): array |
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{ |
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if(!class_exists($class)){ |
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throw new Exception("Class $class does not exist"); |
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} |
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$traits = []; |
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do { |
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$traits = array_merge(class_uses($class), $traits); |
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} |
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while($class = get_parent_class($class)); |
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foreach ($traits as $trait) { |
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$traits = array_merge(class_uses($trait), $traits); |
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} |
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return array_unique(array_values($traits)); |
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} |
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/** |
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* Prototypes constructor that disallow instantiation |
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* @throws Exception |
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*/ |
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public function __construct() |
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{ |
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throw new Exception(static::class.' class can not be instantiated'); |
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} |
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/** |
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* @param mixed ...$_ |
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* @throws Exception |
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*/ |
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final public static function addMethod(...$_): void |
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{ |
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throw new Exception('Adding normal method to '. static::class . ' does not make sense. Did you mean addStaticMethod?'); |
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} |
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} |
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skrtdev /
prototypes
This check looks for parameters that have been defined for a function or method, but which are not used in the method body.