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<?php |
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namespace Pinq\Parsing; |
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/** |
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* Utility class for getting the reflection from any type |
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* of callable. |
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* |
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* @author Elliot Levin <[email protected]> |
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*/ |
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final class Reflection |
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{ |
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private function __construct() |
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{ |
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} |
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/** |
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* @param callable $function |
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* |
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* @return \ReflectionFunctionAbstract |
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* @throws InvalidFunctionException |
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*/ |
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final public static function fromCallable(callable $function) |
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{ |
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// If is array it could be an instance or static method: |
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// ['class', 'method'] or [$instance, 'method']; |
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if (is_array($function)) { |
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return new \ReflectionMethod($function[0], $function[1]); |
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} |
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// If it is a closure it could be an actual closure or |
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// possibly a closure of another function from |
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// \ReflectionFunction::getClosure or \ReflectionMethod::getClosure |
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elseif ($function instanceof \Closure) { |
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$reflection = new \ReflectionFunction($function); |
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// If the name is {closure} it as an actual closure |
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if ($reflection->getShortName() === '{closure}') { |
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return $reflection; |
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} |
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// Bail out, no (sane) way of determining the actual function |
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// represented by the closure |
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throw InvalidFunctionException::invalidFunctionMessage( |
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'The function has been wrapped in closure ' |
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. '(most likely via ReflectionFunction::getClosure or \ReflectionMethod::getClosure) ' |
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. 'and this is not supported', |
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$reflection); |
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} |
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// If an object but not a closure it must be an object defining |
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// the __invoke magic method. |
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elseif (is_object($function)) { |
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return new \ReflectionMethod($function, '__invoke'); |
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} |
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// Fallback to function |
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else { |
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$name = null; |
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is_callable($function, false, $name); |
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return new \ReflectionFunction($name); |
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} |
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} |
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private static $supportsVariadicParameters = null; |
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/** |
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* @param \ReflectionFunctionAbstract $function |
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* |
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* @return boolean |
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*/ |
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public static function isVariadic(\ReflectionFunctionAbstract $function) |
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{ |
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if (self::$supportsVariadicParameters === null) { |
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self::$supportsVariadicParameters = method_exists('\ReflectionParameter', 'isVariadic'); |
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} |
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foreach ($function->getParameters() as $parameter) { |
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if ($parameter->getName() === '...' || |
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(self::$supportsVariadicParameters && $parameter->isVariadic()) |
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) { |
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return true; |
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} |
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} |
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return false; |
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} |
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} |
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TimeToogo /
Pinq
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