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<?php |
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namespace Gskema\TypeSniff\Sniffs\CodeElement; |
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use Gskema\TypeSniff\Inspection\FnTypeInspector; |
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use Gskema\TypeSniff\Inspection\DocTypeInspector; |
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use Gskema\TypeSniff\Inspection\Subject\AbstractTypeSubject; |
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use Gskema\TypeSniff\Inspection\Subject\ParamTypeSubject; |
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use Gskema\TypeSniff\Inspection\Subject\ReturnTypeSubject; |
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use PHP_CodeSniffer\Files\File; |
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use Gskema\TypeSniff\Core\CodeElement\Element\AbstractFqcnMethodElement; |
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use Gskema\TypeSniff\Core\CodeElement\Element\ClassMethodElement; |
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use Gskema\TypeSniff\Core\CodeElement\Element\CodeElementInterface; |
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use Gskema\TypeSniff\Core\CodeElement\Element\InterfaceMethodElement; |
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use Gskema\TypeSniff\Core\DocBlock\DocBlock; |
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use Gskema\TypeSniff\Core\DocBlock\UndefinedDocBlock; |
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use Gskema\TypeSniff\Core\Type\Declaration\NullableType; |
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class FqcnMethodSniff implements CodeElementSniffInterface |
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{ |
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protected const CODE = 'FqcnMethodSniff'; |
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/** @var string[] */ |
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protected $baseUsefulTags = [ |
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'@deprecated', |
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'@throws', |
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'@dataProvider', |
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'@see', |
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'@todo', |
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'@inheritDoc' |
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]; |
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/** @var string[] */ |
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protected $usefulTags = []; |
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/** |
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* @inheritDoc |
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*/ |
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public function configure(array $config): void |
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{ |
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$rawTags = array_merge($this->baseUsefulTags, $config['usefulTags'] ?? []); |
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$usefulTags = []; |
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foreach ($rawTags as $rawTag) { |
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$usefulTags[] = strtolower(ltrim($rawTag, '@')); |
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} |
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$usefulTags = array_unique($usefulTags); |
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$this->usefulTags = $usefulTags; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function register(): array |
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{ |
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return [ |
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ClassMethodElement::class, |
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// TraitMethodElement::class, // can be used to implement interface, not possible to know if it is extended |
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InterfaceMethodElement::class, |
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]; |
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} |
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/** |
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* @inheritDoc |
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* @param AbstractFqcnMethodElement $method |
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*/ |
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public function process(File $file, CodeElementInterface $method): void |
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{ |
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$warningCountBefore = $file->getWarningCount(); |
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$this->processMethod($file, $method); |
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$hasNewWarnings = $file->getWarningCount() > $warningCountBefore; |
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if (!$hasNewWarnings && $this->hasUselessDocBlock($method)) { |
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$file->addWarningOnLine('Useless PHPDoc', $method->getLine(), static::CODE); |
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} |
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} |
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protected function processMethod(File $file, AbstractFqcnMethodElement $method): void |
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{ |
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$fnSig = $method->getSignature(); |
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$docBlock = $method->getDocBlock(); |
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$isMagicMethod = '__' === substr($fnSig->getName(), 0, 2); |
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$isConstructMethod = '__construct' === $fnSig->getName(); |
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$hasInheritDocTag = $docBlock->hasTag('inheritdoc'); |
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// @inheritDoc |
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// __construct can be detected as extended and magic, but we want to inspect it anyway |
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if (!$isConstructMethod) { |
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if ($hasInheritDocTag || $isMagicMethod) { |
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return; |
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} elseif ($method->isExtended()) { |
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$file->addWarningOnLine('Missing @inheritDoc tag. Remove duplicated parent PHPDoc content.', $method->getLine(), static::CODE); |
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return; |
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} |
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} |
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// @param |
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foreach ($fnSig->getParams() as $fnParam) { |
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$paramTag = $docBlock->getParamTag($fnParam->getName()); |
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$subject = ParamTypeSubject::fromParam($fnParam, $paramTag, $docBlock); |
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$this->processSigType($file, $docBlock, $subject); |
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} |
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// @return |
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if (!$isConstructMethod) { |
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$returnTag = $docBlock->getReturnTag(); |
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$subject = ReturnTypeSubject::fromSignature($fnSig, $returnTag, $docBlock); |
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$this->processSigType($file, $docBlock, $subject); |
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} else { |
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foreach ($docBlock->getDescriptionLines() as $lineNum => $descLine) { |
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if (preg_match('#^\w+\s+constructor\.?$#', $descLine)) { |
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$file->addWarningOnLine('Useless description.', $lineNum, static::CODE); |
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} |
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} |
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} |
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} |
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protected function processSigType(File $file, DocBlock $docBlock, AbstractTypeSubject $subject): void |
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{ |
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FnTypeInspector::reportMandatoryTypes($subject); |
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FnTypeInspector::reportSuggestedTypes($subject); |
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FnTypeInspector::reportReplaceableTypes($subject); |
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DocTypeInspector::reportMandatoryTypes($subject); |
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DocTypeInspector::reportSuggestedTypes($subject); |
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DocTypeInspector::reportReplaceableTypes($subject); |
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DocTypeInspector::reportRemovableTypes($subject); |
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DocTypeInspector::reportInvalidTypes($subject); |
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DocTypeInspector::reportMissingOrWrongTypes($subject); |
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$subject->writeWarningsTo($file, static::CODE); |
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} |
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protected function hasUselessDocBlock(AbstractFqcnMethodElement $method): bool |
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{ |
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$fnSig = $method->getSignature(); |
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$docBlock = $method->getDocBlock(); |
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$usefulTagNames = array_diff($this->usefulTags, ['param', 'return']); |
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$docReturnTag = $docBlock->getReturnTag(); |
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if ($docBlock instanceof UndefinedDocBlock |
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|| $docBlock->hasDescription() |
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|| $docBlock->hasOneOfTags($usefulTagNames) |
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|| ($docReturnTag && $docReturnTag->hasDescription()) |
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) { |
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return false; |
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} |
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foreach ($fnSig->getParams() as $fnParam) { |
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$paramTag = $docBlock->getParamTag($fnParam->getName()); |
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if (null === $paramTag) { |
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continue; |
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} |
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if ($paramTag->hasDescription()) { |
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return false; |
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} |
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$fnType = $fnParam->getType(); |
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$rawFnType = $fnType instanceof NullableType |
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? $fnType->toDocString() |
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: $fnType->toString(); |
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if ($paramTag->getType()->toString() !== $rawFnType) { |
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return false; |
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} |
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} |
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$returnTag = $docBlock->getReturnTag(); |
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$returnType = $fnSig->getReturnType(); |
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if ($returnTag && $returnType) { |
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$rawReturnType = $returnType instanceof NullableType |
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? $returnType->toDocString() |
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: $returnType->toString(); |
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if ($returnTag->getType()->toString() !== $rawReturnType) { |
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return false; |
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} |
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} |
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return true; |
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} |
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} |
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This check looks for parameters that have been defined for a function or method, but which are not used in the method body.