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<?php |
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/* |
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* Go! AOP framework |
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* |
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* @copyright Copyright 2012, Lisachenko Alexander <[email protected]> |
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* |
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* This source file is subject to the license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace Go\Aop\Pointcut; |
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use ReflectionClass; |
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use Go\Aop\Pointcut; |
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use Go\Aop\PointFilter; |
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use ReflectionMethod; |
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/** |
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* Flow pointcut is a dynamic checker that verifies stack trace to understand is it matches or not |
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*/ |
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class CFlowBelowMethodPointcut implements PointFilter, Pointcut |
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{ |
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use PointcutClassFilterTrait; |
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/** |
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* Filter for the class |
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* |
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* @var null|PointFilter |
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*/ |
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protected $internalClassFilter = null; |
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/** |
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* Filter for the points |
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* |
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* @var null|PointFilter |
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*/ |
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protected $internalPointFilter; |
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/** |
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* Control flow below constructor |
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* |
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* @param Pointcut $pointcut Instance of pointcut, that will be used for matching |
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* @throws \InvalidArgumentException if filter doesn't support methods |
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*/ |
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public function __construct(Pointcut $pointcut) |
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{ |
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$this->internalClassFilter = $pointcut->getClassFilter(); |
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$this->internalPointFilter = $pointcut; |
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if (!($this->internalPointFilter->getKind() & PointFilter::KIND_METHOD)) { |
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throw new \InvalidArgumentException("Only method filters are valid for control flow"); |
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} |
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} |
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/** |
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* Performs matching of point of code |
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* |
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* @param mixed $point Specific part of code, can be any Reflection class |
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* @param null|mixed $context Related context, can be class or namespace |
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* @param null|string|object $instance Invocation instance or string for static calls |
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* @param null|array $arguments Dynamic arguments for method |
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* |
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* @return bool |
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*/ |
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public function matches($point, $context = null, $instance = null, array $arguments = null) |
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{ |
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// With single parameter (statically) always matches |
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if (!$instance) { |
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return true; |
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} |
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$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS); |
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foreach ($trace as $stackFrame) { |
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if (!isset($stackFrame['class'])) { |
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continue; |
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} |
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$refClass = new ReflectionClass($stackFrame['class']); |
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if (!$this->internalClassFilter->matches($refClass)) { |
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continue; |
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} |
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$refMethod = new ReflectionMethod($stackFrame['class'], $stackFrame['function']); |
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if ($this->internalPointFilter->matches($refMethod)) { |
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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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* Returns the kind of point filter |
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* |
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* @return integer |
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*/ |
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public function getKind() |
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{ |
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return PointFilter::KIND_METHOD | PointFilter::KIND_DYNAMIC; |
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} |
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} |
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goaop /
framework
