mirror of https://github.com/rectorphp/rector.git
133 lines
4.5 KiB
PHP
133 lines
4.5 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\Name;
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use PhpParser\Node\Stmt\ClassMethod;
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use PHPStan\Analyser\Scope;
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use PHPStan\Reflection\ClassReflection;
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use PHPStan\Type\ObjectType;
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use PHPStan\Type\StaticType;
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use PHPStan\Type\ThisType;
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use Rector\Php\PhpVersionProvider;
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use Rector\Rector\AbstractScopeAwareRector;
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use Rector\Reflection\ReflectionResolver;
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use Rector\TypeDeclaration\TypeInferer\ReturnTypeInferer;
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use Rector\ValueObject\PhpVersionFeature;
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use Rector\VendorLocker\NodeVendorLocker\ClassMethodReturnTypeOverrideGuard;
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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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* @see \Rector\Tests\TypeDeclaration\Rector\ClassMethod\ReturnTypeFromStrictFluentReturnRector\ReturnTypeFromStrictFluentReturnRectorTest
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*/
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final class ReturnTypeFromStrictFluentReturnRector extends AbstractScopeAwareRector implements MinPhpVersionInterface
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{
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/**
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* @readonly
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* @var \Rector\VendorLocker\NodeVendorLocker\ClassMethodReturnTypeOverrideGuard
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*/
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private $classMethodReturnTypeOverrideGuard;
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/**
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* @readonly
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* @var \Rector\Reflection\ReflectionResolver
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*/
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private $reflectionResolver;
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/**
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* @readonly
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* @var \Rector\TypeDeclaration\TypeInferer\ReturnTypeInferer
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*/
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private $returnTypeInferer;
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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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public function __construct(ClassMethodReturnTypeOverrideGuard $classMethodReturnTypeOverrideGuard, ReflectionResolver $reflectionResolver, ReturnTypeInferer $returnTypeInferer, PhpVersionProvider $phpVersionProvider)
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{
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$this->classMethodReturnTypeOverrideGuard = $classMethodReturnTypeOverrideGuard;
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$this->reflectionResolver = $reflectionResolver;
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$this->returnTypeInferer = $returnTypeInferer;
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$this->phpVersionProvider = $phpVersionProvider;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Add return type from strict return $this', [new CodeSample(<<<'CODE_SAMPLE'
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final class SomeClass
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{
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public function run()
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{
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return $this;
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}
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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final class SomeClass
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{
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public function run(): self
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{
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return $this;
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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 [ClassMethod::class];
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}
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public function provideMinPhpVersion() : int
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{
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return PhpVersionFeature::HAS_RETURN_TYPE;
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}
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/**
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* @param ClassMethod $node
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*/
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public function refactorWithScope(Node $node, Scope $scope) : ?Node
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{
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// already typed → skip
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if ($node->returnType instanceof Node) {
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return null;
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}
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if ($this->classMethodReturnTypeOverrideGuard->shouldSkipClassMethod($node, $scope)) {
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return null;
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}
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$classReflection = $this->reflectionResolver->resolveClassReflection($node);
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if (!$classReflection instanceof ClassReflection) {
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return null;
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}
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$returnType = $this->returnTypeInferer->inferFunctionLike($node);
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if ($returnType instanceof StaticType && $returnType->getStaticObjectType()->getClassName() === $classReflection->getName()) {
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return $this->processAddReturnSelfOrStatic($node, $classReflection);
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}
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if ($returnType instanceof ObjectType && $returnType->getClassName() === $classReflection->getName()) {
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$node->returnType = new Name('self');
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return $node;
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}
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if (!$returnType instanceof ThisType) {
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return null;
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}
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return $this->processAddReturnSelfOrStatic($node, $classReflection);
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}
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private function processAddReturnSelfOrStatic(ClassMethod $classMethod, ClassReflection $classReflection) : ClassMethod
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{
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$classMethod->returnType = $this->shouldSelf($classReflection) ? new Name('self') : new Name('static');
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return $classMethod;
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}
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private function shouldSelf(ClassReflection $classReflection) : bool
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{
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if ($classReflection->isAnonymous()) {
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return \true;
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}
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if ($classReflection->isFinalByKeyword()) {
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return \true;
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}
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return !$this->phpVersionProvider->isAtLeastPhpVersion(PhpVersionFeature::STATIC_RETURN_TYPE);
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}
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}
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