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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 |
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@@ -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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} |
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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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