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<?php declare (strict_types=1); namespace Rector\DeadCode\Rector\If_; use PhpParser\Node; use PhpParser\Node\Expr; use PhpParser\Node\Expr\PropertyFetch; use PhpParser\Node\Expr\StaticPropertyFetch; use PhpParser\Node\Stmt; use PhpParser\Node\Stmt\If_; use PHPStan\Reflection\ClassReflection; use PHPStan\Type\Constant\ConstantBooleanType; use Rector\Core\Rector\AbstractRector; use Rector\Core\Reflection\ReflectionResolver; use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample; use Symplify\RuleDocGenerator\ValueObject\RuleDefinition; /** * @see \Rector\Tests\DeadCode\Rector\If_\RemoveAlwaysTrueIfConditionRector\RemoveAlwaysTrueIfConditionRectorTest */ final class RemoveAlwaysTrueIfConditionRector extends AbstractRector { /** * @readonly * @var \Rector\Core\Reflection\ReflectionResolver */ private $reflectionResolver; public function __construct(ReflectionResolver $reflectionResolver) { $this->reflectionResolver = $reflectionResolver; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Remove if condition that is always true', [new CodeSample(<<<'CODE_SAMPLE' final class SomeClass { public function go() { if (1 === 1) { return 'yes'; } return 'no'; } } CODE_SAMPLE , <<<'CODE_SAMPLE' final class SomeClass { public function go() { return 'yes'; return 'no'; } } CODE_SAMPLE )]); } /** * @return array<class-string<Node>> */ public function getNodeTypes() : array { return [If_::class]; } /** * @param If_ $node * @return If_|null|Stmt[] */ public function refactor(Node $node) { if ($node->else !== null) { return null; } // just one if if ($node->elseifs !== []) { return null; } $conditionStaticType = $this->getType($node->cond); if (!$conditionStaticType instanceof ConstantBooleanType) { return null; } if (!$conditionStaticType->getValue()) { return null; } if ($this->shouldSkipPropertyFetch($node->cond)) { return null; } if ($node->stmts === []) { $this->removeNode($node); return null; } return $node->stmts; } private function shouldSkipPropertyFetch(Expr $expr) : bool { /** @var PropertyFetch[]|StaticPropertyFetch[] $propertyFetches */ $propertyFetches = $this->betterNodeFinder->findInstancesOf($expr, [PropertyFetch::class, StaticPropertyFetch::class]); foreach ($propertyFetches as $propertyFetch) { $classReflection = $this->reflectionResolver->resolveClassReflectionSourceObject($propertyFetch); if (!$classReflection instanceof ClassReflection) { continue; } $propertyName = (string) $this->nodeNameResolver->getName($propertyFetch); if (!$classReflection->hasNativeProperty($propertyName)) { continue; } $nativeProperty = $classReflection->getNativeProperty($propertyName); if (!$nativeProperty->hasNativeType()) { return \true; } } return \false; } }
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