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EnumCaseObjectType.php
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EnumCaseObjectType.php
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<?php declare(strict_types = 1);
namespace PHPStan\Type\Enum;
use PHPStan\Reflection\ClassMemberAccessAnswerer;
use PHPStan\Reflection\ClassReflection;
use PHPStan\Reflection\Php\EnumPropertyReflection;
use PHPStan\Reflection\PropertyReflection;
use PHPStan\ShouldNotHappenException;
use PHPStan\TrinaryLogic;
use PHPStan\Type\CompoundType;
use PHPStan\Type\Constant\ConstantStringType;
use PHPStan\Type\ObjectType;
use PHPStan\Type\Type;
use PHPStan\Type\VerbosityLevel;
use function sprintf;
/** @api */
class EnumCaseObjectType extends ObjectType
{
public function __construct(
string $className,
private string $enumCaseName,
?ClassReflection $classReflection = null,
)
{
parent::__construct($className, null, $classReflection);
}
public function getEnumCaseName(): string
{
return $this->enumCaseName;
}
public function describe(VerbosityLevel $level): string
{
$parent = parent::describe($level);
return sprintf('%s::%s', $parent, $this->enumCaseName);
}
public function equals(Type $type): bool
{
if (!$type instanceof self) {
return false;
}
return $this->getClassName() === $type->getClassName()
&& $this->enumCaseName === $type->enumCaseName;
}
public function accepts(Type $type, bool $strictTypes): TrinaryLogic
{
return $this->isSuperTypeOf($type);
}
public function isSuperTypeOf(Type $type): TrinaryLogic
{
if ($type instanceof self) {
return TrinaryLogic::createFromBoolean(
$this->getClassName() === $type->getClassName()
&& $this->enumCaseName === $type->enumCaseName,
);
}
if ($type instanceof CompoundType) {
return $type->isSubTypeOf($this);
}
return $type->isSuperTypeOf($this)->yes() ? TrinaryLogic::createMaybe() : TrinaryLogic::createNo();
}
public function subtract(Type $type): Type
{
return $this;
}
public function getTypeWithoutSubtractedType(): Type
{
return $this;
}
public function changeSubtractedType(?Type $subtractedType): Type
{
return $this;
}
public function getSubtractedType(): ?Type
{
return null;
}
public function tryRemove(Type $typeToRemove): ?Type
{
if ($this->isSuperTypeOf($typeToRemove)->yes()) {
return $this->subtract($typeToRemove);
}
return null;
}
public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): PropertyReflection
{
$classReflection = $this->getClassReflection();
if ($classReflection === null) {
return parent::getProperty($propertyName, $scope);
}
if ($propertyName === 'name') {
return new EnumPropertyReflection($classReflection, new ConstantStringType($this->enumCaseName));
}
if ($classReflection->isBackedEnum() && $propertyName === 'value') {
if ($classReflection->hasEnumCase($this->enumCaseName)) {
$enumCase = $classReflection->getEnumCase($this->enumCaseName);
$valueType = $enumCase->getBackingValueType();
if ($valueType === null) {
throw new ShouldNotHappenException();
}
return new EnumPropertyReflection($classReflection, $valueType);
}
}
return parent::getProperty($propertyName, $scope);
}
/**
* @param mixed[] $properties
*/
public static function __set_state(array $properties): Type
{
return new self($properties['className'], $properties['enumCaseName'], null);
}
}