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<?php |
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/** |
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* PHP Deal framework |
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* |
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* @copyright Copyright 2014, 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 PhpDeal\Aspect; |
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use Doctrine\Common\Annotations\Annotation; |
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use Doctrine\Common\Annotations\Reader; |
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use DomainException; |
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use Go\Aop\Intercept\MethodInvocation; |
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use PhpDeal\Exception\ContractViolation; |
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abstract class AbstractContractAspect |
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{ |
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/** |
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* @var Reader |
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*/ |
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protected $reader; |
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/** |
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* @param Reader $reader Annotation reader |
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*/ |
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public function __construct(Reader $reader) |
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{ |
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$this->reader = $reader; |
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} |
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/** |
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* Returns an associative list of arguments for the method invocation |
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* |
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* @param MethodInvocation $invocation |
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* @return array |
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*/ |
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protected function fetchMethodArguments(MethodInvocation $invocation) |
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{ |
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$result = []; |
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$parameters = $invocation->getMethod()->getParameters(); |
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$argumentValues = $invocation->getArguments(); |
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// Number of arguments can be less than number of parameters because of default values |
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foreach ($parameters as $parameterIndex => $reflectionParameter) { |
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$hasArgumentValue = array_key_exists($parameterIndex, $argumentValues); |
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$argumentValue = $hasArgumentValue ? $argumentValues[$parameterIndex] : null; |
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if (!$hasArgumentValue && $reflectionParameter->isDefaultValueAvailable()) { |
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$argumentValue = $reflectionParameter->getDefaultValue(); |
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} |
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$result[$reflectionParameter->name] = $argumentValue; |
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} |
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return $result; |
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} |
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/** |
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* Performs verification of contracts for given invocation |
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* |
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* @param MethodInvocation $invocation Current invocation |
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* @param array|Annotation[] $contracts Contract annotation |
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* @param object|string $instance Invocation instance or string for static class |
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* @param string $scope Scope of method |
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* @param array $args List of arguments for the method |
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* |
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* @throws DomainException |
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*/ |
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protected function ensureContracts(MethodInvocation $invocation, array $contracts, $instance, $scope, array $args) |
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{ |
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static $invoker = null; |
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if (!$invoker) { |
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$invoker = function () { |
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extract(func_get_arg(0)); |
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return eval('return ' . func_get_arg(1) . '; ?>'); |
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}; |
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} |
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$instance = is_object($instance) ? $instance : null; |
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$boundInvoker = $invoker->bindTo($instance, $scope); |
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foreach ($contracts as $contract) { |
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$contractExpression = $contract->value; |
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try { |
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$invocationResult = $boundInvoker->__invoke($args, $contractExpression); |
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// we accept as a result only true or null |
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// null may be a result of assertions from beberlei/assert which passed |
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if ($invocationResult !== null && $invocationResult !== true) { |
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$errorMessage = 'Invalid return value received from the assertion body,' |
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. ' only boolean or void can be returned'; |
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throw new DomainException($errorMessage); |
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} |
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} catch (\Error $internalError) { |
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// PHP-7 friendly interceptor for fatal errors |
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throw new ContractViolation($invocation, $contractExpression, $internalError); |
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} catch (\Exception $internalException) { |
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throw new ContractViolation($invocation, $contractExpression, $internalException); |
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} |
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} |
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} |
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} |
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php-deal /
framework
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