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MixedType.php
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MixedType.php
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<?php declare(strict_types = 1);
namespace PHPStan\Type;
use PHPStan\Reflection\ClassMemberAccessAnswerer;
use PHPStan\Reflection\ConstantReflection;
use PHPStan\Reflection\Dummy\DummyConstantReflection;
use PHPStan\Reflection\Dummy\DummyMethodReflection;
use PHPStan\Reflection\Dummy\DummyPropertyReflection;
use PHPStan\Reflection\MethodReflection;
use PHPStan\Reflection\ParametersAcceptor;
use PHPStan\Reflection\PropertyReflection;
use PHPStan\Reflection\TrivialParametersAcceptor;
use PHPStan\Reflection\Type\CallbackUnresolvedMethodPrototypeReflection;
use PHPStan\Reflection\Type\CallbackUnresolvedPropertyPrototypeReflection;
use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
use PHPStan\TrinaryLogic;
use PHPStan\Type\Constant\ConstantBooleanType;
use PHPStan\Type\Generic\TemplateMixedType;
use PHPStan\Type\Generic\TemplateType;
use PHPStan\Type\Traits\NonGenericTypeTrait;
use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
use function sprintf;
/** @api */
class MixedType implements CompoundType, SubtractableType
{
use NonGenericTypeTrait;
use UndecidedComparisonCompoundTypeTrait;
private ?Type $subtractedType;
/** @api */
public function __construct(
private bool $isExplicitMixed = false,
?Type $subtractedType = null,
)
{
if ($subtractedType instanceof NeverType) {
$subtractedType = null;
}
$this->subtractedType = $subtractedType;
}
/**
* @return string[]
*/
public function getReferencedClasses(): array
{
return [];
}
public function accepts(Type $type, bool $strictTypes): TrinaryLogic
{
return TrinaryLogic::createYes();
}
public function isSuperTypeOfMixed(MixedType $type): TrinaryLogic
{
if ($this->subtractedType === null) {
if ($this->isExplicitMixed) {
if ($type->isExplicitMixed) {
return TrinaryLogic::createYes();
}
return TrinaryLogic::createMaybe();
}
return TrinaryLogic::createYes();
}
if ($type->subtractedType === null) {
return TrinaryLogic::createMaybe();
}
$isSuperType = $type->subtractedType->isSuperTypeOf($this->subtractedType);
if ($isSuperType->yes()) {
if ($this->isExplicitMixed) {
if ($type->isExplicitMixed) {
return TrinaryLogic::createYes();
}
return TrinaryLogic::createMaybe();
}
return TrinaryLogic::createYes();
}
return TrinaryLogic::createMaybe();
}
public function isSuperTypeOf(Type $type): TrinaryLogic
{
if ($this->subtractedType === null || $type instanceof NeverType) {
return TrinaryLogic::createYes();
}
if ($type instanceof self) {
if ($type->subtractedType === null) {
return TrinaryLogic::createMaybe();
}
$isSuperType = $type->subtractedType->isSuperTypeOf($this->subtractedType);
if ($isSuperType->yes()) {
return TrinaryLogic::createYes();
}
return TrinaryLogic::createMaybe();
}
return $this->subtractedType->isSuperTypeOf($type)->negate();
}
public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
{
return new self($this->isExplicitMixed);
}
public function unsetOffset(Type $offsetType): Type
{
return $this;
}
public function isCallable(): TrinaryLogic
{
if (
$this->subtractedType !== null
&& $this->subtractedType->isCallable()->yes()
) {
return TrinaryLogic::createNo();
}
return TrinaryLogic::createMaybe();
}
/**
* @return ParametersAcceptor[]
*/
public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
{
return [new TrivialParametersAcceptor()];
}
public function equals(Type $type): bool
{
if (!$type instanceof self) {
return false;
}
if ($this->subtractedType === null) {
if ($type->subtractedType === null) {
return true;
}
return false;
}
if ($type->subtractedType === null) {
return false;
}
return $this->subtractedType->equals($type->subtractedType);
}
public function isSubTypeOf(Type $otherType): TrinaryLogic
{
if ($otherType instanceof self && !$otherType instanceof TemplateMixedType) {
return TrinaryLogic::createYes();
}
if ($this->subtractedType !== null) {
$isSuperType = $this->subtractedType->isSuperTypeOf($otherType);
if ($isSuperType->yes()) {
return TrinaryLogic::createNo();
}
}
return TrinaryLogic::createMaybe();
}
public function isAcceptedBy(Type $acceptingType, bool $strictTypes): TrinaryLogic
{
$isSuperType = $this->isSuperTypeOf($acceptingType);
if ($isSuperType->no()) {
return $isSuperType;
}
return TrinaryLogic::createYes();
}
public function canAccessProperties(): TrinaryLogic
{
return TrinaryLogic::createYes();
}
public function hasProperty(string $propertyName): TrinaryLogic
{
return TrinaryLogic::createYes();
}
public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): PropertyReflection
{
return $this->getUnresolvedPropertyPrototype($propertyName, $scope)->getTransformedProperty();
}
public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
{
$property = new DummyPropertyReflection();
return new CallbackUnresolvedPropertyPrototypeReflection(
$property,
$property->getDeclaringClass(),
false,
static fn (Type $type): Type => $type,
);
}
public function canCallMethods(): TrinaryLogic
{
return TrinaryLogic::createYes();
}
public function hasMethod(string $methodName): TrinaryLogic
{
return TrinaryLogic::createYes();
}
public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): MethodReflection
{
return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
}
public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
{
$method = new DummyMethodReflection($methodName);
return new CallbackUnresolvedMethodPrototypeReflection(
$method,
$method->getDeclaringClass(),
false,
static fn (Type $type): Type => $type,
);
}
public function canAccessConstants(): TrinaryLogic
{
return TrinaryLogic::createYes();
}
public function hasConstant(string $constantName): TrinaryLogic
{
return TrinaryLogic::createYes();
}
public function getConstant(string $constantName): ConstantReflection
{
return new DummyConstantReflection($constantName);
}
public function isCloneable(): TrinaryLogic
{
return TrinaryLogic::createYes();
}
public function describe(VerbosityLevel $level): string
{
return $level->handle(
static fn (): string => 'mixed',
static fn (): string => 'mixed',
function () use ($level): string {
$description = 'mixed';
if ($this->subtractedType !== null) {
$description .= sprintf('~%s', $this->subtractedType->describe($level));
}
return $description;
},
function () use ($level): string {
$description = 'mixed';
if ($this->subtractedType !== null) {
$description .= sprintf('~%s', $this->subtractedType->describe($level));
}
if ($this->isExplicitMixed) {
$description .= '=explicit';
} else {
$description .= '=implicit';
}
return $description;
},
);
}
public function toBoolean(): BooleanType
{
if ($this->subtractedType !== null && StaticTypeFactory::falsey()->equals($this->subtractedType)) {
return new ConstantBooleanType(true);
}
return new BooleanType();
}
public function toNumber(): Type
{
return new UnionType([
$this->toInteger(),
$this->toFloat(),
]);
}
public function toInteger(): Type
{
return new IntegerType();
}
public function toFloat(): Type
{
return new FloatType();
}
public function toString(): Type
{
return new StringType();
}
public function toArray(): Type
{
$mixed = new self($this->isExplicitMixed);
return new ArrayType($mixed, $mixed);
}
public function isIterable(): TrinaryLogic
{
return TrinaryLogic::createMaybe();
}
public function isIterableAtLeastOnce(): TrinaryLogic
{
return TrinaryLogic::createMaybe();
}
public function getIterableKeyType(): Type
{
return new self($this->isExplicitMixed);
}
public function getIterableValueType(): Type
{
return new self($this->isExplicitMixed);
}
public function isOffsetAccessible(): TrinaryLogic
{
return TrinaryLogic::createMaybe();
}
public function hasOffsetValueType(Type $offsetType): TrinaryLogic
{
return TrinaryLogic::createMaybe();
}
public function getOffsetValueType(Type $offsetType): Type
{
return new self($this->isExplicitMixed);
}
public function isExplicitMixed(): bool
{
return $this->isExplicitMixed;
}
public function subtract(Type $type): Type
{
if ($type instanceof self && !$type instanceof TemplateType) {
return new NeverType();
}
if ($this->subtractedType !== null) {
$type = TypeCombinator::union($this->subtractedType, $type);
}
return new self($this->isExplicitMixed, $type);
}
public function getTypeWithoutSubtractedType(): Type
{
return new self($this->isExplicitMixed);
}
public function changeSubtractedType(?Type $subtractedType): Type
{
return new self($this->isExplicitMixed, $subtractedType);
}
public function getSubtractedType(): ?Type
{
return $this->subtractedType;
}
public function traverse(callable $cb): Type
{
return $this;
}
public function isArray(): TrinaryLogic
{
return TrinaryLogic::createMaybe();
}
public function isNumericString(): TrinaryLogic
{
return TrinaryLogic::createMaybe();
}
public function isNonEmptyString(): TrinaryLogic
{
return TrinaryLogic::createMaybe();
}
public function isLiteralString(): TrinaryLogic
{
return TrinaryLogic::createMaybe();
}
public function tryRemove(Type $typeToRemove): ?Type
{
if ($this->isSuperTypeOf($typeToRemove)->yes()) {
return $this->subtract($typeToRemove);
}
return null;
}
/**
* @param mixed[] $properties
*/
public static function __set_state(array $properties): Type
{
return new self(
$properties['isExplicitMixed'],
$properties['subtractedType'] ?? null,
);
}
}