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