| 1: | <?php declare(strict_types = 1); |
| 2: | |
| 3: | namespace PHPStan\Type; |
| 4: | |
| 5: | use PHPStan\Reflection\ReflectionProviderStaticAccessor; |
| 6: | use PHPStan\ShouldNotHappenException; |
| 7: | use PHPStan\Type\Constant\ConstantBooleanType; |
| 8: | use PHPStan\Type\Generic\TemplateTypeHelper; |
| 9: | use ReflectionIntersectionType; |
| 10: | use ReflectionNamedType; |
| 11: | use ReflectionType; |
| 12: | use ReflectionUnionType; |
| 13: | use function array_map; |
| 14: | use function count; |
| 15: | use function get_class; |
| 16: | use function sprintf; |
| 17: | use function str_ends_with; |
| 18: | use function strtolower; |
| 19: | |
| 20: | class TypehintHelper |
| 21: | { |
| 22: | |
| 23: | private static function getTypeObjectFromTypehint(string $typeString, ?string $selfClass): Type |
| 24: | { |
| 25: | switch (strtolower($typeString)) { |
| 26: | case 'int': |
| 27: | return new IntegerType(); |
| 28: | case 'bool': |
| 29: | return new BooleanType(); |
| 30: | case 'false': |
| 31: | return new ConstantBooleanType(false); |
| 32: | case 'true': |
| 33: | return new ConstantBooleanType(true); |
| 34: | case 'string': |
| 35: | return new StringType(); |
| 36: | case 'float': |
| 37: | return new FloatType(); |
| 38: | case 'array': |
| 39: | return new ArrayType(new MixedType(), new MixedType()); |
| 40: | case 'iterable': |
| 41: | return new IterableType(new MixedType(), new MixedType()); |
| 42: | case 'callable': |
| 43: | return new CallableType(); |
| 44: | case 'void': |
| 45: | return new VoidType(); |
| 46: | case 'object': |
| 47: | return new ObjectWithoutClassType(); |
| 48: | case 'mixed': |
| 49: | return new MixedType(true); |
| 50: | case 'self': |
| 51: | return $selfClass !== null ? new ObjectType($selfClass) : new ErrorType(); |
| 52: | case 'parent': |
| 53: | $reflectionProvider = ReflectionProviderStaticAccessor::getInstance(); |
| 54: | if ($selfClass !== null && $reflectionProvider->hasClass($selfClass)) { |
| 55: | $classReflection = $reflectionProvider->getClass($selfClass); |
| 56: | if ($classReflection->getParentClass() !== null) { |
| 57: | return new ObjectType($classReflection->getParentClass()->getName()); |
| 58: | } |
| 59: | } |
| 60: | return new NonexistentParentClassType(); |
| 61: | case 'static': |
| 62: | $reflectionProvider = ReflectionProviderStaticAccessor::getInstance(); |
| 63: | if ($selfClass !== null && $reflectionProvider->hasClass($selfClass)) { |
| 64: | return new StaticType($reflectionProvider->getClass($selfClass)); |
| 65: | } |
| 66: | |
| 67: | return new ErrorType(); |
| 68: | case 'null': |
| 69: | return new NullType(); |
| 70: | case 'never': |
| 71: | return new NeverType(true); |
| 72: | default: |
| 73: | return new ObjectType($typeString); |
| 74: | } |
| 75: | } |
| 76: | |
| 77: | |
| 78: | public static function decideTypeFromReflection( |
| 79: | ?ReflectionType $reflectionType, |
| 80: | ?Type $phpDocType = null, |
| 81: | ?string $selfClass = null, |
| 82: | bool $isVariadic = false, |
| 83: | ): Type |
| 84: | { |
| 85: | if ($reflectionType === null) { |
| 86: | if ($isVariadic && $phpDocType instanceof ArrayType) { |
| 87: | $phpDocType = $phpDocType->getItemType(); |
| 88: | } |
| 89: | return $phpDocType ?? new MixedType(); |
| 90: | } |
| 91: | |
| 92: | if ($reflectionType instanceof ReflectionUnionType) { |
| 93: | $type = TypeCombinator::union(...array_map(static fn (ReflectionType $type): Type => self::decideTypeFromReflection($type, null, $selfClass, false), $reflectionType->getTypes())); |
| 94: | |
| 95: | return self::decideType($type, $phpDocType); |
| 96: | } |
| 97: | |
| 98: | if ($reflectionType instanceof ReflectionIntersectionType) { |
| 99: | $types = []; |
| 100: | foreach ($reflectionType->getTypes() as $innerReflectionType) { |
| 101: | $innerType = self::decideTypeFromReflection($innerReflectionType, null, $selfClass, false); |
| 102: | if (!$innerType instanceof ObjectType) { |
| 103: | return new NeverType(); |
| 104: | } |
| 105: | |
| 106: | $types[] = $innerType; |
| 107: | } |
| 108: | |
| 109: | return self::decideType(TypeCombinator::intersect(...$types), $phpDocType); |
| 110: | } |
| 111: | |
| 112: | if (!$reflectionType instanceof ReflectionNamedType) { |
| 113: | throw new ShouldNotHappenException(sprintf('Unexpected type: %s', get_class($reflectionType))); |
| 114: | } |
| 115: | |
| 116: | $reflectionTypeString = $reflectionType->getName(); |
| 117: | if (str_ends_with(strtolower($reflectionTypeString), '\\object')) { |
| 118: | $reflectionTypeString = 'object'; |
| 119: | } |
| 120: | if (str_ends_with(strtolower($reflectionTypeString), '\\mixed')) { |
| 121: | $reflectionTypeString = 'mixed'; |
| 122: | } |
| 123: | if (str_ends_with(strtolower($reflectionTypeString), '\\true')) { |
| 124: | $reflectionTypeString = 'true'; |
| 125: | } |
| 126: | if (str_ends_with(strtolower($reflectionTypeString), '\\false')) { |
| 127: | $reflectionTypeString = 'false'; |
| 128: | } |
| 129: | if (str_ends_with(strtolower($reflectionTypeString), '\\null')) { |
| 130: | $reflectionTypeString = 'null'; |
| 131: | } |
| 132: | if (str_ends_with(strtolower($reflectionTypeString), '\\never')) { |
| 133: | $reflectionTypeString = 'never'; |
| 134: | } |
| 135: | |
| 136: | $type = self::getTypeObjectFromTypehint($reflectionTypeString, $selfClass); |
| 137: | if ($reflectionType->allowsNull()) { |
| 138: | $type = TypeCombinator::addNull($type); |
| 139: | } elseif ($phpDocType !== null) { |
| 140: | $phpDocType = TypeCombinator::removeNull($phpDocType); |
| 141: | } |
| 142: | |
| 143: | return self::decideType($type, $phpDocType); |
| 144: | } |
| 145: | |
| 146: | public static function decideType( |
| 147: | Type $type, |
| 148: | ?Type $phpDocType = null, |
| 149: | ): Type |
| 150: | { |
| 151: | if ($phpDocType !== null && !$phpDocType instanceof ErrorType) { |
| 152: | if ($phpDocType instanceof NeverType && $phpDocType->isExplicit()) { |
| 153: | return $phpDocType; |
| 154: | } |
| 155: | if ( |
| 156: | $type instanceof MixedType |
| 157: | && !$type->isExplicitMixed() |
| 158: | && $phpDocType->isVoid()->yes() |
| 159: | ) { |
| 160: | return $phpDocType; |
| 161: | } |
| 162: | |
| 163: | if (TypeCombinator::removeNull($type) instanceof IterableType) { |
| 164: | if ($phpDocType instanceof UnionType) { |
| 165: | $innerTypes = []; |
| 166: | foreach ($phpDocType->getTypes() as $innerType) { |
| 167: | if ($innerType instanceof ArrayType) { |
| 168: | $innerTypes[] = new IterableType( |
| 169: | $innerType->getKeyType(), |
| 170: | $innerType->getItemType(), |
| 171: | ); |
| 172: | } else { |
| 173: | $innerTypes[] = $innerType; |
| 174: | } |
| 175: | } |
| 176: | $phpDocType = new UnionType($innerTypes); |
| 177: | } elseif ($phpDocType instanceof ArrayType) { |
| 178: | $phpDocType = new IterableType( |
| 179: | $phpDocType->getKeyType(), |
| 180: | $phpDocType->getItemType(), |
| 181: | ); |
| 182: | } |
| 183: | } |
| 184: | |
| 185: | if ( |
| 186: | (!$phpDocType instanceof NeverType || ($type instanceof MixedType && !$type->isExplicitMixed())) |
| 187: | && $type->isSuperTypeOf(TemplateTypeHelper::resolveToBounds($phpDocType))->yes() |
| 188: | ) { |
| 189: | $resultType = $phpDocType; |
| 190: | } else { |
| 191: | $resultType = $type; |
| 192: | } |
| 193: | |
| 194: | if ($type instanceof UnionType) { |
| 195: | $addToUnionTypes = []; |
| 196: | foreach ($type->getTypes() as $innerType) { |
| 197: | if (!$innerType->isSuperTypeOf($resultType)->no()) { |
| 198: | continue; |
| 199: | } |
| 200: | |
| 201: | $addToUnionTypes[] = $innerType; |
| 202: | } |
| 203: | |
| 204: | if (count($addToUnionTypes) > 0) { |
| 205: | $type = TypeCombinator::union($resultType, ...$addToUnionTypes); |
| 206: | } else { |
| 207: | $type = $resultType; |
| 208: | } |
| 209: | } elseif (TypeCombinator::containsNull($type)) { |
| 210: | $type = TypeCombinator::addNull($resultType); |
| 211: | } else { |
| 212: | $type = $resultType; |
| 213: | } |
| 214: | } |
| 215: | |
| 216: | return $type; |
| 217: | } |
| 218: | |
| 219: | } |
| 220: | |