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<?php |
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declare(strict_types=1); |
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namespace Roave\ApiCompare; |
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use Roave\ApiCompare\Comparator\BackwardsCompatibility\ClassBased\ClassBased; |
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use Roave\BetterReflection\Reflection\ReflectionClass; |
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use Roave\BetterReflection\Reflection\ReflectionMethod; |
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use Roave\BetterReflection\Reflection\ReflectionParameter; |
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use Roave\BetterReflection\Reflector\ClassReflector; |
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use Roave\BetterReflection\Reflector\Exception\IdentifierNotFound; |
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final class Comparator |
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{ |
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/** @var ClassBased */ |
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private $classBasedComparisons; |
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public function __construct(ClassBased $classBasedComparisons) |
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{ |
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$this->classBasedComparisons = $classBasedComparisons; |
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} |
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public function compare(ClassReflector $oldApi, ClassReflector $newApi): Changes |
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{ |
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$changelog = Changes::new(); |
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foreach ($oldApi->getAllClasses() as $oldClass) { |
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$changelog = $this->examineClass($changelog, $oldClass, $newApi); |
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} |
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return $changelog; |
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} |
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private function examineClass(Changes $changelog, ReflectionClass $oldClass, ClassReflector $newApi): Changes |
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{ |
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try { |
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$newClass = $newApi->reflect($oldClass->getName()); |
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$changelog->mergeWith($this->classBasedComparisons->compare($oldClass, $newClass)); |
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} catch (IdentifierNotFound $exception) { |
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$changelog = $changelog->withAddedChange( |
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Change::removed(sprintf('Class %s has been deleted', $oldClass->getName()), true) |
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); |
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return $changelog; |
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} |
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if ($newClass->isFinal() && !$oldClass->isFinal()) { |
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$changelog = $changelog->withAddedChange( |
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Change::changed(sprintf('Class %s is now final', $oldClass->getName()), true) |
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); |
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} |
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foreach ($oldClass->getMethods() as $oldMethod) { |
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$changelog = $this->examineMethod($changelog, $oldClass, $oldMethod, $newClass); |
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} |
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return $changelog; |
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} |
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private function examineMethod( |
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Changes $changelog, |
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ReflectionClass $oldClass, |
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ReflectionMethod $oldMethod, |
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ReflectionClass $newClass |
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): Changes { |
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if ($oldMethod->isPrivate()) { |
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return $changelog; |
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} |
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try { |
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$newMethod = $newClass->getMethod($oldMethod->getName()); |
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} catch (\OutOfBoundsException $exception) { |
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return $changelog->withAddedChange( |
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Change::removed( |
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sprintf( |
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'Method %s in class %s has been deleted', |
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$oldMethod->getName(), |
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$oldClass->getName() |
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), |
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true |
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) |
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); |
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} |
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foreach ($oldMethod->getParameters() as $parameterPosition => $oldParameter) { |
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$changelog = $this->examineParameter( |
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$changelog, |
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$parameterPosition, |
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$oldClass, |
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$oldMethod, |
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$oldParameter, |
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$newMethod |
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); |
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} |
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return $changelog; |
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} |
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private function examineParameter( |
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Changes $changelog, |
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int $parameterPosition, |
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ReflectionClass $oldClass, |
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ReflectionMethod $oldMethod, |
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ReflectionParameter $oldParameter, |
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ReflectionMethod $newMethod |
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): Changes { |
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$newParameters = $newMethod->getParameters(); |
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if (!array_key_exists($parameterPosition, $newParameters)) { |
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return $changelog->withAddedChange( |
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Change::removed( |
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sprintf( |
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'Parameter %s (position %d) in %s%s%s has been deleted', |
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$oldParameter->getName(), |
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$parameterPosition, |
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$oldClass->getName(), |
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$oldMethod->isStatic() ? '#' : '::', |
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$oldMethod->getName() |
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), |
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true |
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) |
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); |
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} |
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$newParameter = $newParameters[$parameterPosition]; |
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// @todo check if types changed, or becoming default |
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// @todo check if a new param (without a default) was added |
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return $changelog; |
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} |
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} |
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