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<?php |
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/****************************************************************************** |
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* Copyright (c) 2016 Constantin Galbenu <[email protected]> * |
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******************************************************************************/ |
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namespace Gica\CodeAnalysis\Shared\ClassSorter; |
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use Gica\CodeAnalysis\Shared\ClassComparison\SubclassComparator; |
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use Gica\CodeAnalysis\Shared\ClassSorter; |
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class TopologySorter implements ClassSorter |
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{ |
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private $cache = []; |
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/** |
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* @param \ReflectionClass[] $classes |
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* @return \ReflectionClass[] |
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* @throws \Exception |
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*/ |
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public function sortClasses($classes) |
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{ |
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if (count($classes) <= 1) { |
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return $classes; |
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} |
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$input = $this->createTSortInputString($classes); |
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$file = tempnam(sys_get_temp_dir(), 'tsort'); |
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if (false === file_put_contents($file, $input)) { |
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throw new \Exception("file_put_contents $file error"); |
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} |
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exec("tsort $file", $sortedClassNames, $returnVar); |
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unlink($file); |
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if ($returnVar != 0) { |
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throw new \Exception("tsort returned $returnVar for $input"); |
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} |
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$sortedClassNames = array_reverse($sortedClassNames); |
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usort($classes, function (\ReflectionClass $a, \ReflectionClass $b) use ($sortedClassNames) { |
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return array_search($a->name, $sortedClassNames) <=> array_search($b->name, $sortedClassNames); |
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}); |
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return $classes; |
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} |
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public function doesClassDependsOnClass(\ReflectionClass $consumerClass, \ReflectionClass $consumedClass): bool |
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{ |
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$dependencies = $this->getClassDependencies($consumerClass); |
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return $this->isParentClassOfAny($consumedClass, $dependencies); |
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} |
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/** |
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* @param \ReflectionClass $reflectionClass |
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* @param int $level |
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* @return \ReflectionClass[] |
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*/ |
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private function getClassDependencies(\ReflectionClass $reflectionClass, int $level = 0) |
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{ |
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if (!isset($this->cache[$reflectionClass->name])) { |
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$this->cache[$reflectionClass->name] = $this->_getClassDependencies($reflectionClass, $level); |
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} |
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return $this->cache[$reflectionClass->name]; |
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} |
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/** |
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* @param \ReflectionClass $reflectionClass |
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* @param int $level |
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* @return \ReflectionClass[] |
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*/ |
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private function _getClassDependencies(\ReflectionClass $reflectionClass, int $level = 0) |
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{ |
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$dependencies = []; |
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if ($level > 5) { |
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return $dependencies; |
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} |
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$constructor = $reflectionClass->getConstructor(); |
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if ($constructor && $constructor->getParameters()) { |
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$dependencies = array_merge($dependencies, $this->classFromParameters($constructor->getParameters())); |
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} |
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if ($reflectionClass->getParentClass()) { |
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$dependencies = array_merge($dependencies, $this->getClassDependencies($reflectionClass->getParentClass())); |
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} |
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foreach ($dependencies as $dependency) { |
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$dependencies = array_merge($dependencies, $this->getClassDependencies($dependency, $level + 1)); |
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} |
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return $dependencies; |
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} |
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private function isParentClassOfAny(\ReflectionClass $parentClass, $classes): bool |
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{ |
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$comparator = new SubclassComparator(); |
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$isASubClassOrSameClass = function (\ReflectionClass $class) use ($parentClass, $comparator) { |
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return $comparator->isASubClassOrSameClass($class, $parentClass->name); |
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}; |
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$filtered = array_filter($classes, $isASubClassOrSameClass); |
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return count($filtered) > 0; |
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} |
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/** |
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* @param \ReflectionParameter $parameter |
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* @return \ReflectionClass |
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*/ |
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private function classFromParameter(\ReflectionParameter $parameter) |
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{ |
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return $parameter->getClass(); |
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} |
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/** |
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* @param \ReflectionParameter[] $parameters |
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* @return \ReflectionClass[] |
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*/ |
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private function classFromParameters(array $parameters) |
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{ |
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$strings = array_map(function (\ReflectionParameter $parameter) { |
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return $this->classFromParameter($parameter); |
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}, $parameters); |
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return array_filter($strings, function ($s) { |
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return !!$s; |
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}); |
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} |
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/** |
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* @param \ReflectionClass[] $classes |
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* @return string |
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*/ |
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private function createTSortInputString($classes): string |
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{ |
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$inputLines = []; |
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foreach ($classes as $class) { |
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$deps = $this->getClassDependencies($class); |
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foreach ($deps as $dep) { |
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$inputLines[] = $class->name . ' ' . $dep->name; |
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} |
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} |
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$input = implode("\n", $inputLines); |
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return $input; |
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} |
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} |
xprt64 /
code-analysis
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