| 1: | <?php declare(strict_types = 1); |
| 2: | |
| 3: | namespace PHPStan\Reflection; |
| 4: | |
| 5: | use PHPStan\Type\ConditionalTypeForParameter; |
| 6: | use PHPStan\Type\ErrorType; |
| 7: | use PHPStan\Type\Generic\TemplateTypeMap; |
| 8: | use PHPStan\Type\Type; |
| 9: | use PHPStan\Type\TypeCombinator; |
| 10: | use function array_key_exists; |
| 11: | use function array_merge; |
| 12: | use function count; |
| 13: | use function is_int; |
| 14: | |
| 15: | class GenericParametersAcceptorResolver |
| 16: | { |
| 17: | |
| 18: | |
| 19: | |
| 20: | |
| 21: | |
| 22: | public static function resolve(array $argTypes, ParametersAcceptor $parametersAcceptor): ParametersAcceptor |
| 23: | { |
| 24: | $typeMap = TemplateTypeMap::createEmpty(); |
| 25: | $passedArgs = []; |
| 26: | |
| 27: | $parameters = $parametersAcceptor->getParameters(); |
| 28: | $namedArgTypes = []; |
| 29: | foreach ($argTypes as $i => $argType) { |
| 30: | if (is_int($i)) { |
| 31: | if (isset($parameters[$i])) { |
| 32: | $namedArgTypes[$parameters[$i]->getName()] = $argType; |
| 33: | continue; |
| 34: | } |
| 35: | if (count($parameters) > 0) { |
| 36: | $lastParameter = $parameters[count($parameters) - 1]; |
| 37: | if ($lastParameter->isVariadic()) { |
| 38: | $parameterName = $lastParameter->getName(); |
| 39: | if (array_key_exists($parameterName, $namedArgTypes)) { |
| 40: | $namedArgTypes[$parameterName] = TypeCombinator::union($namedArgTypes[$parameterName], $argType); |
| 41: | continue; |
| 42: | } |
| 43: | $namedArgTypes[$parameterName] = $argType; |
| 44: | } |
| 45: | } |
| 46: | continue; |
| 47: | } |
| 48: | |
| 49: | $namedArgTypes[$i] = $argType; |
| 50: | } |
| 51: | |
| 52: | foreach ($parametersAcceptor->getParameters() as $param) { |
| 53: | if (isset($namedArgTypes[$param->getName()])) { |
| 54: | $argType = $namedArgTypes[$param->getName()]; |
| 55: | } elseif ($param->getDefaultValue() !== null) { |
| 56: | $argType = $param->getDefaultValue(); |
| 57: | } else { |
| 58: | continue; |
| 59: | } |
| 60: | |
| 61: | $paramType = $param->getType(); |
| 62: | $typeMap = $typeMap->union($paramType->inferTemplateTypes($argType)); |
| 63: | $passedArgs['$' . $param->getName()] = $argType; |
| 64: | } |
| 65: | |
| 66: | $returnType = $parametersAcceptor->getReturnType(); |
| 67: | if ( |
| 68: | $returnType instanceof ConditionalTypeForParameter |
| 69: | && !$returnType->isNegated() |
| 70: | && array_key_exists($returnType->getParameterName(), $passedArgs) |
| 71: | ) { |
| 72: | $paramType = $returnType->getTarget(); |
| 73: | $argType = $passedArgs[$returnType->getParameterName()]; |
| 74: | $typeMap = $typeMap->union($paramType->inferTemplateTypes($argType)); |
| 75: | } |
| 76: | |
| 77: | $resolvedTemplateTypeMap = new TemplateTypeMap(array_merge( |
| 78: | $parametersAcceptor->getTemplateTypeMap()->map(static fn (string $name, Type $type): Type => new ErrorType())->getTypes(), |
| 79: | $typeMap->getTypes(), |
| 80: | )); |
| 81: | |
| 82: | return new ResolvedFunctionVariant( |
| 83: | $parametersAcceptor, |
| 84: | $resolvedTemplateTypeMap, |
| 85: | $passedArgs, |
| 86: | ); |
| 87: | } |
| 88: | |
| 89: | } |
| 90: | |