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<?php |
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declare(strict_types=1); |
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namespace Roave\ApiCompare\Comparator\BackwardsCompatibility\FunctionBased; |
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use Roave\ApiCompare\Change; |
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use Roave\ApiCompare\Changes; |
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use Roave\BetterReflection\Reflection\ReflectionFunctionAbstract; |
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use Roave\BetterReflection\Reflection\ReflectionMethod; |
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use Roave\BetterReflection\Reflection\ReflectionParameter; |
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/** |
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* A parameter passed by-value and a parameter passed by-reference are wildly different, so changing |
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* the by-ref flag can lead to unexpected state mutations or lack thereof, and should therefore be |
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* considered a BC break. |
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*/ |
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final class ParameterByReferenceChanged implements FunctionBased |
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{ |
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public function compare(ReflectionFunctionAbstract $fromFunction, ReflectionFunctionAbstract $toFunction) : Changes |
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{ |
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/** @var ReflectionParameter[] $fromParameters */ |
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$fromParameters = array_values($fromFunction->getParameters()); |
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/** @var ReflectionParameter[] $toParameters */ |
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$toParameters = array_values($toFunction->getParameters()); |
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$changes = Changes::new(); |
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foreach (array_intersect_key($fromParameters, $toParameters) as $parameterIndex => $commonParameter) { |
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$changes = $changes->mergeWith($this->compareParameter($commonParameter, $toParameters[$parameterIndex])); |
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} |
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return $changes; |
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} |
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private function compareParameter(ReflectionParameter $fromParameter, ReflectionParameter $toParameter) : Changes |
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{ |
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$fromByReference = $fromParameter->isPassedByReference(); |
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$toByReference = $toParameter->isPassedByReference(); |
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if ($fromByReference === $toByReference) { |
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return Changes::new(); |
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} |
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return Changes::fromArray([ |
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Change::changed( |
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sprintf( |
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'The parameter $%s of %s() changed from %s to %s', |
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$fromParameter->getName(), |
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$this->functionOrMethodName($fromParameter->getDeclaringFunction()), |
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$this->referenceToString($fromByReference), |
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$this->referenceToString($toByReference) |
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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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private function functionOrMethodName(ReflectionFunctionAbstract $function) : string |
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{ |
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if ($function instanceof ReflectionMethod) { |
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return $function->getDeclaringClass()->getName() |
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. ($function->isStatic() ? '::' : '#') |
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. $function->getName(); |
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} |
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return $function->getName(); |
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} |
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private function referenceToString(bool $reference) : string |
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{ |
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return $reference ? 'by-reference' : 'by-value'; |
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} |
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} |
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Roave /
BackwardCompatibilityCheck
