File vendor/ondrejmirtes/better-reflection/src/Reflection/Adapter/ReflectionType.php | PHPStan API

1:	<?php
2:
3:	declare(strict_types=1);
4:
5:	namespace PHPStan\BetterReflection\Reflection\Adapter;
6:
7:	use ReflectionType as CoreReflectionType;
8:	use PHPStan\BetterReflection\Reflection\ReflectionIntersectionType as BetterReflectionIntersectionType;
9:	use PHPStan\BetterReflection\Reflection\ReflectionNamedType as BetterReflectionNamedType;
10:	use PHPStan\BetterReflection\Reflection\ReflectionType as BetterReflectionType;
11:	use PHPStan\BetterReflection\Reflection\ReflectionUnionType as BetterReflectionUnionType;
12:
13:	use function array_filter;
14:	use function array_values;
15:	use function count;
16:
17:	/** @psalm-immutable */
18:	abstract class ReflectionType extends CoreReflectionType
19:	{
20:	/** @psalm-pure
21:	* @param BetterReflectionUnionType\|BetterReflectionNamedType\|BetterReflectionIntersectionType\|null $betterReflectionType
22:	* @return \PHPStan\BetterReflection\Reflection\Adapter\ReflectionUnionType\|\PHPStan\BetterReflection\Reflection\Adapter\ReflectionNamedType\|\PHPStan\BetterReflection\Reflection\Adapter\ReflectionIntersectionType\|null */
23:	public static function fromTypeOrNull($betterReflectionType)
24:	{
25:	return $betterReflectionType !== null ? self::fromType($betterReflectionType) : null;
26:	}
27:
28:	/**
29:	* @internal
30:	*
31:	* @psalm-pure
32:	* @param BetterReflectionNamedType\|BetterReflectionUnionType\|BetterReflectionIntersectionType $betterReflectionType
33:	* @return \PHPStan\BetterReflection\Reflection\Adapter\ReflectionUnionType\|\PHPStan\BetterReflection\Reflection\Adapter\ReflectionNamedType\|\PHPStan\BetterReflection\Reflection\Adapter\ReflectionIntersectionType
34:	*/
35:	public static function fromType($betterReflectionType)
36:	{
37:	if ($betterReflectionType instanceof BetterReflectionUnionType) {
38:	// php-src has this weird behavior where a union type composed of a single type `T`
39:	// together with `null` means that a `ReflectionNamedType` for `?T` is produced,
40:	// rather than `T\|null`. This is done to keep BC compatibility with PHP 7.1 (which
41:	// introduced nullable types), but at reflection level, this is mostly a nuisance.
42:	// In order to keep parity with core, we stashed this weird behavior in here.
43:	$nonNullTypes = array_values(array_filter($betterReflectionType->getTypes(), static function (BetterReflectionType $type) : bool {
44:	return ! ($type instanceof BetterReflectionNamedType && $type->getName() === 'null');
45:	}));
46:
47:	if (
48:	$betterReflectionType->allowsNull()
49:	&& count($nonNullTypes) === 1
50:	&& $nonNullTypes[0] instanceof BetterReflectionNamedType
51:	) {
52:	return new ReflectionNamedType($nonNullTypes[0], true);
53:	}
54:
55:	return new ReflectionUnionType($betterReflectionType);
56:	}
57:
58:	if ($betterReflectionType instanceof BetterReflectionIntersectionType) {
59:	return new ReflectionIntersectionType($betterReflectionType);
60:	}
61:
62:	return new ReflectionNamedType($betterReflectionType, $betterReflectionType->allowsNull());
63:	}
64:	}
65: