mirror of https://github.com/rectorphp/rector.git
166 lines
5.7 KiB
PHP
166 lines
5.7 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\TypeDeclaration\Rector\ClassMethod;
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use PhpParser\Node;
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use PhpParser\Node\Stmt\Class_;
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use PhpParser\Node\Stmt\ClassMethod;
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use PHPStan\Reflection\MethodReflection;
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use PHPStan\Reflection\ParametersAcceptorSelector;
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use PHPStan\Reflection\ParametersAcceptorWithPhpDocs;
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use PHPStan\Type\MixedType;
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use PHPStan\Type\ObjectType;
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use PHPStan\Type\Type;
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use Rector\Php\PhpVersionProvider;
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use Rector\PHPStanStaticTypeMapper\Enum\TypeKind;
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use Rector\Rector\AbstractRector;
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use Rector\StaticTypeMapper\StaticTypeMapper;
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use Rector\ValueObject\MethodName;
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use Rector\ValueObject\PhpVersionFeature;
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use Rector\VendorLocker\ParentClassMethodTypeOverrideGuard;
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use Rector\VersionBonding\Contract\MinPhpVersionInterface;
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use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
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use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
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/**
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* @changelog https://wiki.php.net/rfc/lsp_errors
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* @see \Rector\Tests\TypeDeclaration\Rector\ClassMethod\AddReturnTypeDeclarationBasedOnParentClassMethodRector\AddReturnTypeDeclarationBasedOnParentClassMethodRectorTest
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*/
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final class AddReturnTypeDeclarationBasedOnParentClassMethodRector extends AbstractRector implements MinPhpVersionInterface
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{
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/**
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* @readonly
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* @var \Rector\VendorLocker\ParentClassMethodTypeOverrideGuard
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*/
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private $parentClassMethodTypeOverrideGuard;
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/**
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* @readonly
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* @var \Rector\Php\PhpVersionProvider
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*/
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private $phpVersionProvider;
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/**
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* @readonly
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* @var \Rector\StaticTypeMapper\StaticTypeMapper
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*/
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private $staticTypeMapper;
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public function __construct(ParentClassMethodTypeOverrideGuard $parentClassMethodTypeOverrideGuard, PhpVersionProvider $phpVersionProvider, StaticTypeMapper $staticTypeMapper)
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{
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$this->parentClassMethodTypeOverrideGuard = $parentClassMethodTypeOverrideGuard;
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$this->phpVersionProvider = $phpVersionProvider;
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$this->staticTypeMapper = $staticTypeMapper;
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}
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public function provideMinPhpVersion() : int
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{
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return PhpVersionFeature::SCALAR_TYPES;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Add missing return type declaration based on parent class method', [new CodeSample(<<<'CODE_SAMPLE'
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class A
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{
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public function execute(): int
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{
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}
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}
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class B extends A{
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public function execute()
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{
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}
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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class A
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{
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public function execute(): int
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{
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}
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}
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class B extends A{
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public function execute(): int
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{
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}
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}
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CODE_SAMPLE
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)]);
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}
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/**
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* @return array<class-string<Node>>
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*/
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public function getNodeTypes() : array
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{
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return [Class_::class];
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}
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/**
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* @param Class_ $node
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*/
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public function refactor(Node $node) : ?Node
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{
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$hasChanged = \false;
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foreach ($node->getMethods() as $classMethod) {
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if ($this->isName($classMethod, MethodName::CONSTRUCT)) {
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continue;
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}
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$parentClassMethodReturnType = $this->getReturnTypeRecursive($classMethod);
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if (!$parentClassMethodReturnType instanceof Type) {
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continue;
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}
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$changedClassMethod = $this->processClassMethodReturnType($node, $classMethod, $parentClassMethodReturnType);
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if (!$changedClassMethod instanceof ClassMethod) {
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continue;
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}
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$hasChanged = \true;
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}
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if ($hasChanged) {
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return $node;
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}
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return null;
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}
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private function getReturnTypeRecursive(ClassMethod $classMethod) : ?Type
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{
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$returnType = $classMethod->getReturnType();
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if ($returnType !== null) {
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return $this->staticTypeMapper->mapPhpParserNodePHPStanType($returnType);
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}
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$parentMethodReflection = $this->parentClassMethodTypeOverrideGuard->getParentClassMethod($classMethod);
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while ($parentMethodReflection instanceof MethodReflection) {
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if ($parentMethodReflection->isPrivate()) {
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return null;
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}
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$parameterAcceptor = ParametersAcceptorSelector::selectSingle($parentMethodReflection->getVariants());
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if (!$parameterAcceptor instanceof ParametersAcceptorWithPhpDocs) {
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return null;
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}
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$parentReturnType = $parameterAcceptor->getNativeReturnType();
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if (!$parentReturnType instanceof MixedType) {
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return $parentReturnType;
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}
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if ($parentReturnType->isExplicitMixed()) {
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return $parentReturnType;
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}
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$parentMethodReflection = $this->parentClassMethodTypeOverrideGuard->getParentClassMethod($parentMethodReflection);
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}
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return null;
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}
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private function processClassMethodReturnType(Class_ $class, ClassMethod $classMethod, Type $parentType) : ?ClassMethod
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{
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if ($parentType instanceof MixedType) {
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$className = (string) $this->nodeNameResolver->getName($class);
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$currentObjectType = new ObjectType($className);
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if (!$parentType->equals($currentObjectType) && $classMethod->returnType !== null) {
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return null;
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}
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}
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if ($parentType instanceof MixedType && !$this->phpVersionProvider->isAtLeastPhpVersion(PhpVersionFeature::MIXED_TYPE)) {
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return null;
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}
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// already set and sub type or equal → no change
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if ($this->parentClassMethodTypeOverrideGuard->shouldSkipReturnTypeChange($classMethod, $parentType)) {
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return null;
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}
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$classMethod->returnType = $this->staticTypeMapper->mapPHPStanTypeToPhpParserNode($parentType, TypeKind::RETURN);
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return $classMethod;
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}
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}
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