mirror of https://github.com/rectorphp/rector.git
98 lines
3.0 KiB
PHP
98 lines
3.0 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\Php74\Rector\Property;
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use PhpParser\Node;
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use PhpParser\Node\Expr;
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use PhpParser\Node\Stmt\Class_;
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use PhpParser\Node\Stmt\Property;
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use Rector\Core\Rector\AbstractRector;
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use Rector\Core\ValueObject\PhpVersionFeature;
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use Rector\TypeDeclaration\AlreadyAssignDetector\ConstructorAssignDetector;
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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\Php74\Rector\Property\RestoreDefaultNullToNullableTypePropertyRector\RestoreDefaultNullToNullableTypePropertyRectorTest
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*/
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final class RestoreDefaultNullToNullableTypePropertyRector extends AbstractRector implements MinPhpVersionInterface
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{
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/**
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* @readonly
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* @var \Rector\TypeDeclaration\AlreadyAssignDetector\ConstructorAssignDetector
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*/
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private $constructorAssignDetector;
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public function __construct(ConstructorAssignDetector $constructorAssignDetector)
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{
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$this->constructorAssignDetector = $constructorAssignDetector;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Add null default to properties with PHP 7.4 property nullable type', [new CodeSample(<<<'CODE_SAMPLE'
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class SomeClass
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{
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public ?string $name;
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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class SomeClass
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{
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public ?string $name = null;
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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 [Property::class];
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}
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/**
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* @param Property $node
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*/
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public function refactor(Node $node) : ?Node
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{
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if ($this->shouldSkip($node)) {
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return null;
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}
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$onlyProperty = $node->props[0];
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$onlyProperty->default = $this->nodeFactory->createNull();
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return $node;
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}
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public function provideMinPhpVersion() : int
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{
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return PhpVersionFeature::TYPED_PROPERTIES;
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}
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private function shouldSkip(Property $property) : bool
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{
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if ($property->type === null) {
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return \true;
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}
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if (\count($property->props) > 1) {
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return \true;
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}
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$onlyProperty = $property->props[0];
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if ($onlyProperty->default instanceof Expr) {
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return \true;
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}
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if ($property->isReadonly()) {
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return \true;
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}
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if (!$this->nodeTypeResolver->isNullableType($property)) {
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return \true;
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}
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// is variable assigned in constructor
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$propertyName = $this->getName($property);
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$classLike = $this->betterNodeFinder->findParentType($property, Class_::class);
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// a trait can be used in multiple context, we don't know whether it is assigned in __construct or not
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// so it needs to has null default
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if (!$classLike instanceof Class_) {
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return \false;
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}
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return $this->constructorAssignDetector->isPropertyAssigned($classLike, $propertyName);
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}
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}
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