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<?php |
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declare(strict_types=1); |
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namespace ProxyManager\ProxyGenerator\LazyLoadingGhost\MethodGenerator; |
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use Laminas\Code\Generator\ParameterGenerator; |
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use Laminas\Code\Generator\PropertyGenerator; |
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use ProxyManager\Generator\MethodGenerator; |
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use ProxyManager\Generator\Util\IdentifierSuffixer; |
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use ProxyManager\ProxyGenerator\Util\Properties; |
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use ReflectionProperty; |
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use function array_map; |
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use function implode; |
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use function sprintf; |
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use function str_replace; |
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use function var_export; |
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/** |
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* Implementation for {@see \ProxyManager\Proxy\LazyLoadingInterface::isProxyInitialized} |
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* for lazy loading value holder objects |
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*/ |
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class CallInitializer extends MethodGenerator |
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{ |
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public function __construct( |
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PropertyGenerator $initializerProperty, |
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PropertyGenerator $initTracker, |
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Properties $properties |
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) { |
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$docBlock = <<<'DOCBLOCK' |
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Triggers initialization logic for this ghost object |
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@param string $methodName |
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@param mixed[] $parameters |
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@return mixed |
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DOCBLOCK; |
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parent::__construct( |
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IdentifierSuffixer::getIdentifier('callInitializer'), |
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[ |
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new ParameterGenerator('methodName'), |
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new ParameterGenerator('parameters', 'array'), |
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], |
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self::FLAG_PRIVATE, |
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null, |
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$docBlock |
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); |
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$initializer = $initializerProperty->getName(); |
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$initialization = $initTracker->getName(); |
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$bodyTemplate = <<<'PHP' |
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if ($this->%s || ! $this->%s) { |
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return; |
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} |
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$this->%s = true; |
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%s |
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%s |
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$result = $this->%s->__invoke($this, $methodName, $parameters, $this->%s, $properties); |
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$this->%s = false; |
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return $result; |
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PHP; |
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$referenceableProperties = $properties->onlyPropertiesThatCanBeUnset(); |
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$this->setBody(sprintf( |
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$bodyTemplate, |
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$initialization, |
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$initializer, |
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$initialization, |
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$this->propertiesInitializationCode($referenceableProperties), |
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$this->propertiesReferenceArrayCode($referenceableProperties), |
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$initializer, |
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$initializer, |
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$initialization |
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)); |
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} |
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private function propertiesInitializationCode(Properties $properties) : string |
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{ |
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$assignments = []; |
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foreach ($properties->getAccessibleProperties() as $property) { |
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$assignments[] = '$this->' |
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. $property->getName() |
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. ' = ' . $this->getExportedPropertyDefaultValue($property) |
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. ';'; |
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} |
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foreach ($properties->getGroupedPrivateProperties() as $className => $privateProperties) { |
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$cacheKey = 'cache' . str_replace('\\', '_', $className); |
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$assignments[] = 'static $' . $cacheKey . ";\n\n" |
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. '$' . $cacheKey . ' ?: $' . $cacheKey . " = \\Closure::bind(static function (\$instance) {\n" |
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. $this->getPropertyDefaultsAssignments($privateProperties) . "\n" |
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. '}, null, ' . var_export($className, true) . ");\n\n" |
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. '$' . $cacheKey . "(\$this);\n\n"; |
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} |
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return implode("\n", $assignments) . "\n\n"; |
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} |
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/** |
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* @param ReflectionProperty[] $properties |
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*/ |
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private function getPropertyDefaultsAssignments(array $properties) : string |
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{ |
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return implode( |
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"\n", |
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array_map( |
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function (ReflectionProperty $property) : string { |
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return ' $instance->' . $property->getName() |
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. ' = ' . $this->getExportedPropertyDefaultValue($property) . ';'; |
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}, |
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$properties |
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) |
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); |
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} |
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private function propertiesReferenceArrayCode(Properties $properties) : string |
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{ |
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$assignments = []; |
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foreach ($properties->getAccessibleProperties() as $propertyInternalName => $property) { |
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$assignments[] = ' ' |
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. var_export($propertyInternalName, true) . ' => & $this->' . $property->getName() |
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. ','; |
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} |
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$code = "\$properties = [\n" . implode("\n", $assignments) . "\n];\n\n"; |
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// must use assignments, as direct reference during array definition causes a fatal error (not sure why) |
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foreach ($properties->getGroupedPrivateProperties() as $className => $classPrivateProperties) { |
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$cacheKey = 'cacheFetch' . str_replace('\\', '_', $className); |
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$code .= 'static $' . $cacheKey . ";\n\n" |
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. '$' . $cacheKey . ' ?: $' . $cacheKey |
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. " = \\Closure::bind(function (\$instance, array & \$properties) {\n" |
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. $this->generatePrivatePropertiesAssignmentsCode($classPrivateProperties) |
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. '}, $this, ' . var_export($className, true) . ");\n\n" |
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. '$' . $cacheKey . '($this, $properties);'; |
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} |
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return $code; |
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} |
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/** |
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* @param array<string, ReflectionProperty> $properties indexed by internal name |
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*/ |
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private function generatePrivatePropertiesAssignmentsCode(array $properties) : string |
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{ |
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$code = ''; |
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foreach ($properties as $property) { |
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$key = "\0" . $property->getDeclaringClass()->getName() . "\0" . $property->getName(); |
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$code .= ' $properties[' . var_export($key, true) . '] = ' |
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. '& $instance->' . $property->getName() . ";\n"; |
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} |
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return $code; |
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} |
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private function getExportedPropertyDefaultValue(ReflectionProperty $property) : string |
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{ |
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$name = $property->getName(); |
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$defaults = $property->getDeclaringClass()->getDefaultProperties(); |
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return var_export($defaults[$name] ?? null, true); |
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} |
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} |
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Ocramius /
ProxyManager
