mirror of https://github.com/rectorphp/rector.git
77 lines
2.6 KiB
PHP
77 lines
2.6 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\Strict\NodeAnalyzer;
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use PhpParser\Node\Expr;
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use PhpParser\Node\Expr\PropertyFetch;
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use PhpParser\Node\Expr\StaticPropertyFetch;
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use PhpParser\Node\Stmt\ClassLike;
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use PhpParser\Node\Stmt\Property;
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use PHPStan\Type\ThisType;
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use PHPStan\Type\TypeWithClassName;
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use Rector\Core\PhpParser\AstResolver;
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use Rector\NodeNameResolver\NodeNameResolver;
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use Rector\NodeTypeResolver\NodeTypeResolver;
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use Rector\TypeDeclaration\AlreadyAssignDetector\ConstructorAssignDetector;
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final class UnitializedPropertyAnalyzer
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{
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/**
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* @readonly
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* @var \Rector\Core\PhpParser\AstResolver
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*/
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private $astResolver;
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/**
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* @readonly
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* @var \Rector\NodeTypeResolver\NodeTypeResolver
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*/
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private $nodeTypeResolver;
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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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/**
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* @readonly
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* @var \Rector\NodeNameResolver\NodeNameResolver
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*/
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private $nodeNameResolver;
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public function __construct(AstResolver $astResolver, NodeTypeResolver $nodeTypeResolver, ConstructorAssignDetector $constructorAssignDetector, NodeNameResolver $nodeNameResolver)
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{
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$this->astResolver = $astResolver;
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$this->nodeTypeResolver = $nodeTypeResolver;
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$this->constructorAssignDetector = $constructorAssignDetector;
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$this->nodeNameResolver = $nodeNameResolver;
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}
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public function isUnitialized(Expr $expr) : bool
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{
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if (!$expr instanceof PropertyFetch && !$expr instanceof StaticPropertyFetch) {
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return \false;
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}
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$varType = $this->nodeTypeResolver->getType($expr->var);
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if ($varType instanceof ThisType) {
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$varType = $varType->getStaticObjectType();
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}
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if (!$varType instanceof TypeWithClassName) {
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return \false;
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}
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$className = $varType->getClassName();
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$classLike = $this->astResolver->resolveClassFromName($className);
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if (!$classLike instanceof ClassLike) {
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return \false;
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}
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$propertyName = (string) $this->nodeNameResolver->getName($expr);
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$property = $classLike->getProperty($propertyName);
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if (!$property instanceof Property) {
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return \false;
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}
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if (\count($property->props) !== 1) {
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return \false;
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}
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if ($property->props[0]->default instanceof Expr) {
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return \false;
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}
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return !$this->constructorAssignDetector->isPropertyAssigned($classLike, $propertyName);
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}
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}
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