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<?php |
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declare(strict_types = 1); |
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/* |
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* Go! AOP framework |
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* |
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* @copyright Copyright 2013, 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\Proxy; |
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use Go\Aop\Framework\ReflectionFunctionInvocation; |
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use Go\Aop\Intercept\FunctionInvocation; |
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use Go\Core\AspectContainer; |
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use Go\Core\AspectKernel; |
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use Go\ParserReflection\ReflectionFileNamespace; |
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use Go\Proxy\Part\FunctionCallArgumentListGenerator; |
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use Go\Proxy\Part\InterceptedFunctionGenerator; |
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use ReflectionFunction; |
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use Zend\Code\Generator\FileGenerator; |
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use Zend\Code\Generator\ValueGenerator; |
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/** |
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* Function proxy builder that is used to generate a proxy-function from the list of joinpoints |
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*/ |
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class FunctionProxyGenerator |
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{ |
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/** |
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* List of advices that are used for generation of child |
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* |
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* @var array |
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*/ |
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protected $advices = []; |
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/** |
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* @var FileGenerator |
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*/ |
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protected $fileGenerator; |
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/** |
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* Constructs functions stub class from namespace Reflection |
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* |
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* @param ReflectionFileNamespace $namespace Reflection of namespace |
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* @param string[][] $advices List of function advices |
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* @param bool $useParameterWidening Enables usage of parameter widening feature |
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* |
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* @throws \ReflectionException If there is an advice for unknown function |
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*/ |
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public function __construct( |
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ReflectionFileNamespace $namespace, |
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array $advices = [], |
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bool $useParameterWidening = false |
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) { |
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$this->advices = $advices; |
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$this->fileGenerator = new FileGenerator(); |
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$this->fileGenerator->setNamespace($namespace->getName()); |
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$functionsContent = []; |
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$functionAdvices = $advices[AspectContainer::FUNCTION_PREFIX] ?? []; |
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foreach (array_keys($functionAdvices) as $functionName) { |
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$functionReflection = new ReflectionFunction($functionName); |
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$functionBody = $this->getJoinpointInvocationBody($functionReflection); |
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$interceptedFunction = new InterceptedFunctionGenerator($functionReflection, $functionBody, $useParameterWidening); |
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$functionsContent[] = $interceptedFunction->generate(); |
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} |
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$this->fileGenerator->setBody(implode("\n", $functionsContent)); |
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} |
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/** |
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* Returns a joinpoint for specific function in the namespace |
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* |
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* @param string $joinPointName Special joinpoint name |
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* @param array $advices List of advices |
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* |
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* @return FunctionInvocation |
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*/ |
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public static function getJoinPoint(string $joinPointName, array $advices): FunctionInvocation |
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{ |
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static $accessor; |
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if ($accessor === null) { |
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$accessor = AspectKernel::getInstance()->getContainer()->get('aspect.advisor.accessor'); |
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} |
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$filledAdvices = []; |
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foreach ($advices as $advisorName) { |
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$filledAdvices[] = $accessor->$advisorName; |
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} |
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return new ReflectionFunctionInvocation($joinPointName, $filledAdvices); |
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} |
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/** |
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* Generates the source code of function proxies in given namespace |
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*/ |
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public function generate(): string |
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{ |
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return $this->fileGenerator->generate(); |
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} |
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/** |
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* Creates definition for trait method body |
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* |
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* @param ReflectionFunction $function Method reflection |
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* |
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* @return string new method body |
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*/ |
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protected function getJoinpointInvocationBody(ReflectionFunction $function): string |
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{ |
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$class = '\\' . __CLASS__; |
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$argumentList = new FunctionCallArgumentListGenerator($function); |
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$argumentCode = $argumentList->generate(); |
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$return = 'return '; |
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if (PHP_VERSION_ID >= 70100 && $function->hasReturnType()) { |
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$returnType = (string) $function->getReturnType(); |
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if ($returnType === 'void') { |
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// void return types should not return anything |
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$return = ''; |
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} |
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} |
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$functionAdvices = $this->advices[AspectContainer::FUNCTION_PREFIX][$function->name]; |
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$advicesArray = new ValueGenerator($functionAdvices, ValueGenerator::TYPE_ARRAY_SHORT); |
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$advicesArray->setArrayDepth(1); |
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$advicesCode = $advicesArray->generate(); |
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return <<<BODY |
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static \$__joinPoint; |
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if (\$__joinPoint === null) { |
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\$__joinPoint = {$class}::getJoinPoint('{$function->name}', {$advicesCode}); |
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} |
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{$return}\$__joinPoint->__invoke($argumentCode); |
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BODY; |
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} |
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} |
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goaop /
framework
