| 1: | <?php declare(strict_types = 1); |
| 2: | |
| 3: | namespace PHPStan\Type; |
| 4: | |
| 5: | use PHPStan\TrinaryLogic; |
| 6: | use PHPStan\Type\Generic\TemplateTypeVariance; |
| 7: | use PHPStan\Type\Traits\LateResolvableTypeTrait; |
| 8: | use PHPStan\Type\Traits\NonGeneralizableTypeTrait; |
| 9: | use function array_merge; |
| 10: | use function sprintf; |
| 11: | |
| 12: | |
| 13: | final class ConditionalType implements CompoundType, LateResolvableType |
| 14: | { |
| 15: | |
| 16: | use LateResolvableTypeTrait; |
| 17: | use NonGeneralizableTypeTrait; |
| 18: | |
| 19: | public function __construct( |
| 20: | private Type $subject, |
| 21: | private Type $target, |
| 22: | private Type $if, |
| 23: | private Type $else, |
| 24: | private bool $negated, |
| 25: | ) |
| 26: | { |
| 27: | } |
| 28: | |
| 29: | public function getSubject(): Type |
| 30: | { |
| 31: | return $this->subject; |
| 32: | } |
| 33: | |
| 34: | public function getTarget(): Type |
| 35: | { |
| 36: | return $this->target; |
| 37: | } |
| 38: | |
| 39: | public function getIf(): Type |
| 40: | { |
| 41: | return $this->if; |
| 42: | } |
| 43: | |
| 44: | public function getElse(): Type |
| 45: | { |
| 46: | return $this->else; |
| 47: | } |
| 48: | |
| 49: | public function isNegated(): bool |
| 50: | { |
| 51: | return $this->negated; |
| 52: | } |
| 53: | |
| 54: | public function isSuperTypeOf(Type $type): TrinaryLogic |
| 55: | { |
| 56: | if ($type instanceof self) { |
| 57: | return $this->if->isSuperTypeOf($type->if) |
| 58: | ->and($this->else->isSuperTypeOf($type->else)); |
| 59: | } |
| 60: | |
| 61: | return $this->isSuperTypeOfDefault($type); |
| 62: | } |
| 63: | |
| 64: | public function getReferencedClasses(): array |
| 65: | { |
| 66: | return array_merge( |
| 67: | $this->subject->getReferencedClasses(), |
| 68: | $this->target->getReferencedClasses(), |
| 69: | $this->if->getReferencedClasses(), |
| 70: | $this->else->getReferencedClasses(), |
| 71: | ); |
| 72: | } |
| 73: | |
| 74: | public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array |
| 75: | { |
| 76: | return array_merge( |
| 77: | $this->subject->getReferencedTemplateTypes($positionVariance), |
| 78: | $this->target->getReferencedTemplateTypes($positionVariance), |
| 79: | $this->if->getReferencedTemplateTypes($positionVariance), |
| 80: | $this->else->getReferencedTemplateTypes($positionVariance), |
| 81: | ); |
| 82: | } |
| 83: | |
| 84: | public function equals(Type $type): bool |
| 85: | { |
| 86: | return $type instanceof self |
| 87: | && $this->subject->equals($type->subject) |
| 88: | && $this->target->equals($type->target) |
| 89: | && $this->if->equals($type->if) |
| 90: | && $this->else->equals($type->else); |
| 91: | } |
| 92: | |
| 93: | public function describe(VerbosityLevel $level): string |
| 94: | { |
| 95: | return sprintf( |
| 96: | '(%s %s %s ? %s : %s)', |
| 97: | $this->subject->describe($level), |
| 98: | $this->negated ? 'is not' : 'is', |
| 99: | $this->target->describe($level), |
| 100: | $this->if->describe($level), |
| 101: | $this->else->describe($level), |
| 102: | ); |
| 103: | } |
| 104: | |
| 105: | public function isResolvable(): bool |
| 106: | { |
| 107: | return !TypeUtils::containsTemplateType($this->subject) && !TypeUtils::containsTemplateType($this->target); |
| 108: | } |
| 109: | |
| 110: | protected function getResult(): Type |
| 111: | { |
| 112: | $isSuperType = $this->target->isSuperTypeOf($this->subject); |
| 113: | |
| 114: | if ($isSuperType->yes()) { |
| 115: | return !$this->negated ? $this->if : $this->else; |
| 116: | } |
| 117: | |
| 118: | if ($isSuperType->no()) { |
| 119: | return !$this->negated ? $this->else : $this->if; |
| 120: | } |
| 121: | |
| 122: | return TypeCombinator::union($this->if, $this->else); |
| 123: | } |
| 124: | |
| 125: | public function traverse(callable $cb): Type |
| 126: | { |
| 127: | $subject = $cb($this->subject); |
| 128: | $target = $cb($this->target); |
| 129: | $if = $cb($this->if); |
| 130: | $else = $cb($this->else); |
| 131: | |
| 132: | if ($this->subject === $subject && $this->target === $target && $this->if === $if && $this->else === $else) { |
| 133: | return $this; |
| 134: | } |
| 135: | |
| 136: | return new self($subject, $target, $if, $else, $this->negated); |
| 137: | } |
| 138: | |
| 139: | |
| 140: | |
| 141: | |
| 142: | public static function __set_state(array $properties): Type |
| 143: | { |
| 144: | return new self( |
| 145: | $properties['subject'], |
| 146: | $properties['target'], |
| 147: | $properties['if'], |
| 148: | $properties['else'], |
| 149: | $properties['negated'], |
| 150: | ); |
| 151: | } |
| 152: | |
| 153: | } |
| 154: | |