/
ClosureType.php
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/
ClosureType.php
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<?php declare(strict_types = 1);
namespace PHPStan\Type;
use Closure;
use PHPStan\Analyser\OutOfClassScope;
use PHPStan\Reflection\ClassMemberAccessAnswerer;
use PHPStan\Reflection\ClassReflection;
use PHPStan\Reflection\ConstantReflection;
use PHPStan\Reflection\ExtendedMethodReflection;
use PHPStan\Reflection\Native\NativeParameterReflection;
use PHPStan\Reflection\ParameterReflection;
use PHPStan\Reflection\ParametersAcceptor;
use PHPStan\Reflection\Php\ClosureCallUnresolvedMethodPrototypeReflection;
use PHPStan\Reflection\PropertyReflection;
use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
use PHPStan\TrinaryLogic;
use PHPStan\Type\Constant\ConstantArrayType;
use PHPStan\Type\Constant\ConstantBooleanType;
use PHPStan\Type\Constant\ConstantIntegerType;
use PHPStan\Type\Generic\TemplateType;
use PHPStan\Type\Generic\TemplateTypeHelper;
use PHPStan\Type\Generic\TemplateTypeMap;
use PHPStan\Type\Traits\NonArrayTypeTrait;
use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
use PHPStan\Type\Traits\NonGenericTypeTrait;
use PHPStan\Type\Traits\NonIterableTypeTrait;
use PHPStan\Type\Traits\NonOffsetAccessibleTypeTrait;
use PHPStan\Type\Traits\NonRemoveableTypeTrait;
use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
use function array_map;
use function array_merge;
use function implode;
use function sprintf;
/** @api */
class ClosureType implements TypeWithClassName, ParametersAcceptor
{
use NonArrayTypeTrait;
use NonGenericTypeTrait;
use NonIterableTypeTrait;
use UndecidedComparisonTypeTrait;
use NonOffsetAccessibleTypeTrait;
use NonRemoveableTypeTrait;
use NonGeneralizableTypeTrait;
private ObjectType $objectType;
private TemplateTypeMap $templateTypeMap;
private TemplateTypeMap $resolvedTemplateTypeMap;
/**
* @api
* @param array<int, ParameterReflection> $parameters
*/
public function __construct(
private array $parameters,
private Type $returnType,
private bool $variadic,
?TemplateTypeMap $templateTypeMap = null,
?TemplateTypeMap $resolvedTemplateTypeMap = null,
)
{
$this->objectType = new ObjectType(Closure::class);
$this->templateTypeMap = $templateTypeMap ?? TemplateTypeMap::createEmpty();
$this->resolvedTemplateTypeMap = $resolvedTemplateTypeMap ?? TemplateTypeMap::createEmpty();
}
public function getClassName(): string
{
return $this->objectType->getClassName();
}
public function getClassReflection(): ?ClassReflection
{
return $this->objectType->getClassReflection();
}
public function getAncestorWithClassName(string $className): ?TypeWithClassName
{
return $this->objectType->getAncestorWithClassName($className);
}
/**
* @return string[]
*/
public function getReferencedClasses(): array
{
$classes = $this->objectType->getReferencedClasses();
foreach ($this->parameters as $parameter) {
$classes = array_merge($classes, $parameter->getType()->getReferencedClasses());
}
return array_merge($classes, $this->returnType->getReferencedClasses());
}
public function accepts(Type $type, bool $strictTypes): TrinaryLogic
{
if ($type instanceof CompoundType) {
return $type->isAcceptedBy($this, $strictTypes);
}
if (!$type instanceof ClosureType) {
return $this->objectType->accepts($type, $strictTypes);
}
return $this->isSuperTypeOfInternal($type, true);
}
public function isSuperTypeOf(Type $type): TrinaryLogic
{
if ($type instanceof CompoundType) {
return $type->isSubTypeOf($this);
}
return $this->isSuperTypeOfInternal($type, false);
}
private function isSuperTypeOfInternal(Type $type, bool $treatMixedAsAny): TrinaryLogic
{
if ($type instanceof self) {
return CallableTypeHelper::isParametersAcceptorSuperTypeOf(
$this,
$type,
$treatMixedAsAny,
);
}
if (
$type instanceof TypeWithClassName
&& $type->getClassName() === Closure::class
) {
return TrinaryLogic::createMaybe();
}
return $this->objectType->isSuperTypeOf($type);
}
public function equals(Type $type): bool
{
if (!$type instanceof self) {
return false;
}
return $this->returnType->equals($type->returnType);
}
public function describe(VerbosityLevel $level): string
{
return $level->handle(
static fn (): string => 'Closure',
fn (): string => sprintf(
'Closure(%s): %s',
implode(', ', array_map(
static fn (ParameterReflection $param): string => sprintf(
'%s%s%s',
$param->isVariadic() ? '...' : '',
$param->getType()->describe($level),
$param->isOptional() && !$param->isVariadic() ? '=' : '',
),
$this->parameters,
)),
$this->returnType->describe($level),
),
);
}
public function canAccessProperties(): TrinaryLogic
{
return $this->objectType->canAccessProperties();
}
public function hasProperty(string $propertyName): TrinaryLogic
{
return $this->objectType->hasProperty($propertyName);
}
public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): PropertyReflection
{
return $this->objectType->getProperty($propertyName, $scope);
}
public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
{
return $this->objectType->getUnresolvedPropertyPrototype($propertyName, $scope);
}
public function canCallMethods(): TrinaryLogic
{
return $this->objectType->canCallMethods();
}
public function hasMethod(string $methodName): TrinaryLogic
{
return $this->objectType->hasMethod($methodName);
}
public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
{
return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
}
public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
{
if ($methodName === 'call') {
return new ClosureCallUnresolvedMethodPrototypeReflection(
$this->objectType->getUnresolvedMethodPrototype($methodName, $scope),
$this,
);
}
return $this->objectType->getUnresolvedMethodPrototype($methodName, $scope);
}
public function canAccessConstants(): TrinaryLogic
{
return $this->objectType->canAccessConstants();
}
public function hasConstant(string $constantName): TrinaryLogic
{
return $this->objectType->hasConstant($constantName);
}
public function getConstant(string $constantName): ConstantReflection
{
return $this->objectType->getConstant($constantName);
}
public function getConstantStrings(): array
{
return [];
}
public function isIterable(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isIterableAtLeastOnce(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isCallable(): TrinaryLogic
{
return TrinaryLogic::createYes();
}
/**
* @return ParametersAcceptor[]
*/
public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
{
return [$this];
}
public function isCloneable(): TrinaryLogic
{
return TrinaryLogic::createYes();
}
public function toBoolean(): BooleanType
{
return new ConstantBooleanType(true);
}
public function toNumber(): Type
{
return new ErrorType();
}
public function toInteger(): Type
{
return new ErrorType();
}
public function toFloat(): Type
{
return new ErrorType();
}
public function toString(): Type
{
return new ErrorType();
}
public function toArray(): Type
{
return new ConstantArrayType(
[new ConstantIntegerType(0)],
[$this],
[1],
[],
true,
);
}
public function toArrayKey(): Type
{
return new ErrorType();
}
public function getTemplateTypeMap(): TemplateTypeMap
{
return $this->templateTypeMap;
}
public function getResolvedTemplateTypeMap(): TemplateTypeMap
{
return $this->resolvedTemplateTypeMap;
}
/**
* @return array<int, ParameterReflection>
*/
public function getParameters(): array
{
return $this->parameters;
}
public function isVariadic(): bool
{
return $this->variadic;
}
public function getReturnType(): Type
{
return $this->returnType;
}
public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
{
if ($receivedType instanceof UnionType || $receivedType instanceof IntersectionType) {
return $receivedType->inferTemplateTypesOn($this);
}
if ($receivedType->isCallable()->no() || ! $receivedType instanceof self) {
return TemplateTypeMap::createEmpty();
}
$parametersAcceptors = $receivedType->getCallableParametersAcceptors(new OutOfClassScope());
$typeMap = TemplateTypeMap::createEmpty();
foreach ($parametersAcceptors as $parametersAcceptor) {
$typeMap = $typeMap->union($this->inferTemplateTypesOnParametersAcceptor($parametersAcceptor));
}
return $typeMap;
}
private function inferTemplateTypesOnParametersAcceptor(ParametersAcceptor $parametersAcceptor): TemplateTypeMap
{
$typeMap = TemplateTypeMap::createEmpty();
$args = $parametersAcceptor->getParameters();
$returnType = $parametersAcceptor->getReturnType();
foreach ($this->getParameters() as $i => $param) {
$paramType = $param->getType();
if (isset($args[$i])) {
$argType = $args[$i]->getType();
} elseif ($paramType instanceof TemplateType) {
$argType = TemplateTypeHelper::resolveToBounds($paramType);
} else {
$argType = new NeverType();
}
$typeMap = $typeMap->union($paramType->inferTemplateTypes($argType)->convertToLowerBoundTypes());
}
return $typeMap->union($this->getReturnType()->inferTemplateTypes($returnType));
}
public function traverse(callable $cb): Type
{
return new self(
array_map(static function (ParameterReflection $param) use ($cb): NativeParameterReflection {
$defaultValue = $param->getDefaultValue();
return new NativeParameterReflection(
$param->getName(),
$param->isOptional(),
$cb($param->getType()),
$param->passedByReference(),
$param->isVariadic(),
$defaultValue !== null ? $cb($defaultValue) : null,
);
}, $this->getParameters()),
$cb($this->getReturnType()),
$this->isVariadic(),
$this->templateTypeMap,
$this->resolvedTemplateTypeMap,
);
}
public function isNull(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isTrue(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isFalse(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isBoolean(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isFloat(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isInteger(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isString(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isNumericString(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isNonEmptyString(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isNonFalsyString(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isLiteralString(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isClassStringType(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
public function isVoid(): TrinaryLogic
{
return TrinaryLogic::createNo();
}
/**
* @param mixed[] $properties
*/
public static function __set_state(array $properties): Type
{
return new self(
$properties['parameters'],
$properties['returnType'],
$properties['variadic'],
$properties['templateTypeMap'],
$properties['resolvedTemplateTypeMap'],
);
}
}