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Support for generic traits and specifying template types with
@use
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| <?php declare(strict_types = 1); | ||
|
|
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| namespace PHPStan\Rules\Generics; | ||
|
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| use PhpParser\Node; | ||
| use PHPStan\Analyser\Scope; | ||
| use PHPStan\PhpDoc\Tag\UsesTag; | ||
| use PHPStan\Rules\Rule; | ||
| use PHPStan\Type\FileTypeMapper; | ||
| use PHPStan\Type\Type; | ||
|
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| /** | ||
| * @implements \PHPStan\Rules\Rule<\PhpParser\Node\Stmt\TraitUse> | ||
| */ | ||
| class UsedTraitsRule implements Rule | ||
| { | ||
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| private \PHPStan\Type\FileTypeMapper $fileTypeMapper; | ||
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| private \PHPStan\Rules\Generics\GenericAncestorsCheck $genericAncestorsCheck; | ||
|
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| public function __construct( | ||
| FileTypeMapper $fileTypeMapper, | ||
| GenericAncestorsCheck $genericAncestorsCheck | ||
| ) | ||
| { | ||
| $this->fileTypeMapper = $fileTypeMapper; | ||
| $this->genericAncestorsCheck = $genericAncestorsCheck; | ||
| } | ||
|
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| public function getNodeType(): string | ||
| { | ||
| return Node\Stmt\TraitUse::class; | ||
| } | ||
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| public function processNode(Node $node, Scope $scope): array | ||
| { | ||
| if (!$scope->isInClass()) { | ||
| throw new \PHPStan\ShouldNotHappenException(); | ||
| } | ||
|
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| $className = $scope->getClassReflection()->getName(); | ||
| $traitName = null; | ||
| if ($scope->isInTrait()) { | ||
| $traitName = $scope->getTraitReflection()->getName(); | ||
| } | ||
| $useTags = []; | ||
| $docComment = $node->getDocComment(); | ||
| if ($docComment !== null) { | ||
| $resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc( | ||
| $scope->getFile(), | ||
| $className, | ||
| $traitName, | ||
| null, | ||
| $docComment->getText() | ||
| ); | ||
| $useTags = $resolvedPhpDoc->getUsesTags(); | ||
| } | ||
|
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| $description = sprintf('class %s', $className); | ||
| $typeDescription = 'class'; | ||
| if ($traitName !== null) { | ||
| $description = sprintf('trait %s', $traitName); | ||
| $typeDescription = 'trait'; | ||
| } | ||
|
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| return $this->genericAncestorsCheck->check( | ||
| $node->traits, | ||
| array_map(static function (UsesTag $tag): Type { | ||
| return $tag->getType(); | ||
| }, $useTags), | ||
| sprintf('%s @use tag contains incompatible type %%s.', ucfirst($description)), | ||
| sprintf('%s has @use tag, but does not use any trait.', ucfirst($description)), | ||
| sprintf('The @use tag of %s describes %%s but the %s uses %%s.', $description, $typeDescription), | ||
| 'PHPDoc tag @use contains generic type %s but trait %s is not generic.', | ||
| 'Generic type %s in PHPDoc tag @use does not specify all template types of trait %s: %s', | ||
| 'Generic type %s in PHPDoc tag @use specifies %d template types, but trait %s supports only %d: %s', | ||
| 'Type %s in generic type %s in PHPDoc tag @use is not subtype of template type %s of trait %s.', | ||
| 'PHPDoc tag @use has invalid type %s.', | ||
| sprintf('%s uses generic trait %%s but does not specify its types: %%s', ucfirst($description)), | ||
| sprintf('in used type %%s of %s', $description) | ||
| ); | ||
| } | ||
|
|
||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| <?php declare(strict_types = 1); | ||
|
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| namespace Bug4423; | ||
|
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| use function PHPStan\Analyser\assertType; | ||
|
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| /** | ||
| * @template T | ||
| */ | ||
| class Bar {} | ||
|
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| /** | ||
| * @template K | ||
| * @property-read Bar<K> $bar | ||
| * @method Bar<K> doBar() | ||
| */ | ||
| trait Foo { | ||
|
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| /** @var Bar<K> */ | ||
| public $baz; | ||
|
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| /** @param K $k */ | ||
| public function doFoo($k) | ||
| { | ||
| assertType('T (class Bug4423\Child, argument)', $k); | ||
| assertType('Bug4423\Bar<T (class Bug4423\Child, argument)>', $this->bar); | ||
| assertType('Bug4423\Bar<T (class Bug4423\Child, argument)>', $this->baz); | ||
| assertType('Bug4423\Bar<T (class Bug4423\Child, argument)>', $this->doBar()); | ||
| assertType('Bug4423\Bar<T (class Bug4423\Child, argument)>', $this->doBaz()); | ||
| } | ||
|
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| /** @return Bar<K> */ | ||
| public function doBaz() | ||
| { | ||
|
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| } | ||
|
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| } | ||
|
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| /** | ||
| * @template T | ||
| * @template K | ||
| */ | ||
| class Base { | ||
|
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| } | ||
|
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| /** | ||
| * @template T | ||
| * @extends Base<int, T> | ||
| */ | ||
| class Child extends Base { | ||
| /** @phpstan-use Foo<T> */ | ||
| use Foo; | ||
| } | ||
|
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| function (Child $child): void { | ||
| /** @var Child<int> $child */ | ||
| assertType('Bug4423\Child<int>', $child); | ||
| assertType('Bug4423\Bar<int>', $child->bar); | ||
| assertType('Bug4423\Bar<int>', $child->baz); | ||
| assertType('Bug4423\Bar<int>', $child->doBar()); | ||
| assertType('Bug4423\Bar<int>', $child->doBaz()); | ||
| }; |
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