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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\ApiCompare\Formatter\ReflectionFunctionAbstractName; |
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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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use function assert; |
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/** |
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* A default value for a parameter should not change, as that can lead to change in expected execution |
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* behavior. |
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*/ |
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final class ParameterDefaultValueChanged implements FunctionBased |
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{ |
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/** @var ReflectionFunctionAbstractName */ |
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private $formatFunction; |
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public function __construct() |
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{ |
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$this->formatFunction = new ReflectionFunctionAbstractName(); |
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} |
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public function compare(ReflectionFunctionAbstract $fromFunction, ReflectionFunctionAbstract $toFunction) : Changes |
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{ |
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$fromParametersWithDefaults = $this->defaultParameterValues($fromFunction); |
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$toParametersWithDefaults = $this->defaultParameterValues($toFunction); |
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$changes = Changes::new(); |
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foreach (array_intersect_key($fromParametersWithDefaults, $toParametersWithDefaults) as $parameterIndex => $parameter) { |
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assert($parameter instanceof ReflectionParameter); |
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$defaultValueFrom = $parameter->getDefaultValue(); |
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$defaultValueTo = $toParametersWithDefaults[$parameterIndex]->getDefaultValue(); |
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if ($defaultValueFrom === $defaultValueTo) { |
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continue; |
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} |
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$changes = $changes->mergeWith(Changes::fromArray([ |
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Change::changed( |
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sprintf( |
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'Default parameter value for for parameter $%s of %s changed from %s to %s', |
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$parameter->getName(), |
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$this->formatFunction->__invoke($fromFunction), |
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var_export($defaultValueFrom, true), |
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var_export($defaultValueTo, true) |
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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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return $changes; |
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} |
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/** @return ReflectionParameter[] indexed by parameter index */ |
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private function defaultParameterValues(ReflectionFunctionAbstract $function) : array |
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{ |
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$optionalParameters = array_values(array_filter( |
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$function->getParameters(), |
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function (ReflectionParameter $parameter) : bool { |
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return $parameter->isDefaultValueAvailable(); |
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} |
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)); |
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return array_combine( |
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array_map(function (ReflectionParameter $parameter) : int { |
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return $parameter->getPosition(); |
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}, $optionalParameters), |
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$optionalParameters |
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); |
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} |
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} |
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