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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\Proxy; |
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use ReflectionFunctionAbstract; |
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use ReflectionParameter; |
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/** |
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* Abstract class for building different proxies |
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*/ |
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abstract class AbstractProxy |
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{ |
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/** |
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* Indent for source code |
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* |
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* @var int |
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*/ |
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protected $indent = 4; |
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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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* PHP expression string for accessing LSB information |
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* |
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* @var string |
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*/ |
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protected static $staticLsbExpression = 'static::class'; |
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/** |
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* Constructs an abstract proxy class |
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* |
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* @param array $advices List of advices |
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*/ |
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public function __construct(array $advices = []) |
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{ |
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$this->advices = $this->flattenAdvices($advices); |
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} |
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/** |
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* Returns text representation of class |
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* |
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* @return string |
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*/ |
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abstract public function __toString(); |
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/** |
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* Indent block of code |
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* |
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* @param string $text Non-indented text |
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* |
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* @return string Indented text |
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*/ |
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protected function indent($text) |
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{ |
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$pad = str_pad('', $this->indent, ' '); |
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$lines = array_map(function($line) use ($pad) { |
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return $pad . $line; |
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}, explode("\n", $text)); |
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return join("\n", $lines); |
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} |
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/** |
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* Returns list of string representation of parameters |
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* |
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* @param array|ReflectionParameter[] $parameters List of parameters |
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* |
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* @return array |
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*/ |
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protected function getParameters(array $parameters) |
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{ |
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$parameterDefinitions = []; |
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foreach ($parameters as $parameter) { |
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$parameterDefinitions[] = $this->getParameterCode($parameter); |
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} |
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return $parameterDefinitions; |
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} |
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/** |
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* Return string representation of parameter |
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* |
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* @param ReflectionParameter $parameter Reflection parameter |
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* |
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* @return string |
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*/ |
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protected function getParameterCode(ReflectionParameter $parameter) |
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{ |
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$type = ''; |
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if (PHP_VERSION_ID >= 50700) { |
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$reflectionType = $parameter->getType(); |
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if ($reflectionType) { |
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$nsPrefix = $reflectionType->isBuiltin() ? '' : '\\'; |
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$type = $nsPrefix . (string) $reflectionType; |
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} |
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} else { |
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if ($parameter->isArray()) { |
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$type = 'array'; |
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} elseif ($parameter->isCallable()) { |
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$type = 'callable'; |
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} elseif ($parameter->getClass()) { |
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$type = '\\' . $parameter->getClass()->name; |
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} |
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} |
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$defaultValue = null; |
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$isDefaultValueAvailable = $parameter->isDefaultValueAvailable(); |
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if ($isDefaultValueAvailable) { |
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$defaultValue = var_export($parameter->getDefaultValue(), true); |
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} elseif ($parameter->isOptional()) { |
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$defaultValue = 'null'; |
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} |
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$code = ( |
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($type ? "$type " : '') . // Typehint |
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($parameter->isPassedByReference() ? '&' : '') . // By reference sign |
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($parameter->isVariadic() ? '...' : '') . // Variadic symbol |
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'$' . // Variable symbol |
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($parameter->name) . // Name of the argument |
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($defaultValue !== null ? (" = " . $defaultValue) : '') // Default value if present |
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); |
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return $code; |
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} |
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/** |
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* Replace concrete advices with list of ids |
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* |
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* @param $advices |
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* |
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* @return array flatten list of advices |
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*/ |
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private function flattenAdvices($advices) |
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{ |
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$flattenAdvices = []; |
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foreach ($advices as $type => $typedAdvices) { |
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foreach ($typedAdvices as $name => $concreteAdvices) { |
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if (is_array($concreteAdvices)) { |
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$flattenAdvices[$type][$name] = array_keys($concreteAdvices); |
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} |
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} |
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} |
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return $flattenAdvices; |
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} |
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/** |
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* Prepares a line with args from the method definition |
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* |
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* @param ReflectionFunctionAbstract $functionLike |
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* |
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* @return string |
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*/ |
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protected function prepareArgsLine(ReflectionFunctionAbstract $functionLike) |
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{ |
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$argumentsPart = []; |
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$arguments = []; |
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$hasOptionals = false; |
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foreach ($functionLike->getParameters() as $parameter) { |
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$byReference = ($parameter->isPassedByReference() && !$parameter->isVariadic()) ? '&' : ''; |
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$hasOptionals = $hasOptionals || $parameter->isOptional(); |
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$arguments[] = $byReference . '$' . $parameter->name; |
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} |
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$isVariadic = $functionLike->isVariadic(); |
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if ($isVariadic) { |
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$argumentsPart[] = array_pop($arguments); |
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} |
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if (!empty($arguments)) { |
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// Unshifting to keep correct order |
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$argumentLine = '[' . join(', ', $arguments) . ']'; |
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if ($hasOptionals) { |
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$argumentLine = "\\array_slice($argumentLine, 0, \\func_num_args())"; |
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} |
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array_unshift($argumentsPart, $argumentLine); |
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} |
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return join(', ', $argumentsPart); |
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} |
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} |
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goaop /
framework
