classlike_storage_provider = $storage_provider; $this->file_reference_provider = $file_reference_provider; $this->classlikes = $classlikes; $this->return_type_provider = new MethodReturnTypeProvider(); $this->existence_provider = new MethodExistenceProvider(); $this->visibility_provider = new MethodVisibilityProvider(); $this->params_provider = new MethodParamsProvider(); } /** * Whether or not a given method exists * * @param string $method_id * @param ?string $calling_function_id * @param CodeLocation|null $code_location * * @return bool */ public function methodExists( $method_id, $calling_function_id = null, CodeLocation $code_location = null, StatementsSource $source = null, string $file_path = null ) { // remove trailing backslash if it exists $method_id = preg_replace('/^\\\\/', '', $method_id); list($fq_class_name, $method_name) = explode('::', $method_id); $method_name = strtolower($method_name); $method_id = $fq_class_name . '::' . $method_name; if ($this->existence_provider->has($fq_class_name)) { $method_exists = $this->existence_provider->doesMethodExist( $fq_class_name, $method_name, $source, $code_location ); if ($method_exists !== null) { return $method_exists; } } if ($calling_function_id) { $calling_function_id = strtolower($calling_function_id); } $old_method_id = null; $fq_class_name = $this->classlikes->getUnAliasedName($fq_class_name); try { $class_storage = $this->classlike_storage_provider->get($fq_class_name); } catch (\InvalidArgumentException $e) { return false; } if (isset($class_storage->declaring_method_ids[$method_name])) { $declaring_method_id = $class_storage->declaring_method_ids[$method_name]; $declaring_method_id_lc = strtolower($declaring_method_id); if ($calling_function_id === $declaring_method_id_lc) { return true; } $method_id_lc = strtolower($method_id); if ($method_id_lc !== $declaring_method_id_lc && $class_storage->user_defined && isset($class_storage->potential_declaring_method_ids[$method_name]) ) { foreach ($class_storage->potential_declaring_method_ids[$method_name] as $potential_id => $_) { if ($calling_function_id) { $this->file_reference_provider->addMethodReferenceToClassMember( $calling_function_id, $potential_id ); } elseif ($file_path) { $this->file_reference_provider->addFileReferenceToClassMember( $file_path, $potential_id ); } } } else { if ($calling_function_id) { $this->file_reference_provider->addMethodReferenceToClassMember( $calling_function_id, $declaring_method_id_lc ); } elseif ($file_path) { $this->file_reference_provider->addFileReferenceToClassMember( $file_path, $declaring_method_id_lc ); } } if ($this->collect_locations && $code_location) { $this->file_reference_provider->addCallingLocationForClassMethod( $code_location, $declaring_method_id_lc ); } foreach ($class_storage->class_implements as $fq_interface_name) { $interface_method_id_lc = strtolower($fq_interface_name . '::' . $method_name); if ($this->collect_locations && $code_location) { $this->file_reference_provider->addCallingLocationForClassMethod( $code_location, $interface_method_id_lc ); } if ($calling_function_id) { $this->file_reference_provider->addMethodReferenceToClassMember( $calling_function_id, $interface_method_id_lc ); } elseif ($file_path) { $this->file_reference_provider->addFileReferenceToClassMember( $file_path, $interface_method_id_lc ); } } list($declaring_method_class, $declaring_method_name) = explode('::', $declaring_method_id); $declaring_class_storage = $this->classlike_storage_provider->get($declaring_method_class); if (isset($declaring_class_storage->overridden_method_ids[$declaring_method_name])) { $overridden_method_ids = $declaring_class_storage->overridden_method_ids[$declaring_method_name]; foreach ($overridden_method_ids as $overridden_method_id) { if ($this->collect_locations && $code_location) { $this->file_reference_provider->addCallingLocationForClassMethod( $code_location, $overridden_method_id ); } if ($calling_function_id) { // also store failures in case the method is added later $this->file_reference_provider->addMethodReferenceToClassMember( $calling_function_id, $overridden_method_id ); } elseif ($file_path) { $this->file_reference_provider->addFileReferenceToClassMember( $file_path, $overridden_method_id ); } } } return true; } if ($class_storage->abstract && isset($class_storage->overridden_method_ids[$method_name])) { return true; } // support checking oldstyle constructors if ($method_name === '__construct') { $method_name_parts = explode('\\', $fq_class_name); $old_constructor_name = array_pop($method_name_parts); $old_method_id = $fq_class_name . '::' . $old_constructor_name; } if (!$class_storage->user_defined && (CallMap::inCallMap($method_id) || ($old_method_id && CallMap::inCallMap($method_id))) ) { return true; } foreach ($class_storage->parent_classes + $class_storage->used_traits as $potential_future_declaring_fqcln) { $potential_id = strtolower($potential_future_declaring_fqcln) . '::' . $method_name; if ($calling_function_id) { // also store failures in case the method is added later $this->file_reference_provider->addMethodReferenceToMissingClassMember( $calling_function_id, $potential_id ); } elseif ($file_path) { $this->file_reference_provider->addFileReferenceToMissingClassMember( $file_path, $potential_id ); } } if ($calling_function_id) { // also store failures in case the method is added later $this->file_reference_provider->addMethodReferenceToMissingClassMember( $calling_function_id, strtolower($method_id) ); } elseif ($file_path) { $this->file_reference_provider->addFileReferenceToMissingClassMember( $file_path, strtolower($method_id) ); } return false; } /** * @param string $method_id * @param array $args * * @return array */ public function getMethodParams( $method_id, StatementsSource $source = null, array $args = null, Context $context = null ) : array { list($fq_class_name, $method_name) = explode('::', $method_id); if ($this->params_provider->has($fq_class_name)) { $method_params = $this->params_provider->getMethodParams( $fq_class_name, $method_name, $args, $source, $context ); if ($method_params !== null) { return $method_params; } } $declaring_method_id = $this->getDeclaringMethodId($method_id); // functions if (CallMap::inCallMap($declaring_method_id ?: $method_id)) { $declaring_fq_class_name = explode('::', $declaring_method_id ?: $method_id)[0]; $class_storage = $this->classlike_storage_provider->get($declaring_fq_class_name); if (!$class_storage->stubbed) { $function_callables = CallMap::getCallablesFromCallMap($declaring_method_id ?: $method_id); if ($function_callables === null) { throw new \UnexpectedValueException( 'Not expecting $function_callables to be null for ' . $declaring_method_id ); } if (!$source || $args === null || count($function_callables) === 1) { assert($function_callables[0]->params !== null); return $function_callables[0]->params; } if ($context && $source instanceof \Psalm\Internal\Analyzer\StatementsAnalyzer) { $was_inside_call = $context->inside_call; $context->inside_call = true; foreach ($args as $arg) { \Psalm\Internal\Analyzer\Statements\ExpressionAnalyzer::analyze( $source, $arg->value, $context ); } if (!$was_inside_call) { $context->inside_call = false; } } $matching_callable = CallMap::getMatchingCallableFromCallMapOptions( $source->getCodebase(), $function_callables, $args, $source->getNodeTypeProvider() ); assert($matching_callable->params !== null); return $matching_callable->params; } } if ($declaring_method_id) { $storage = $this->getStorage($declaring_method_id); $params = $storage->params; if ($storage->has_docblock_param_types) { return $params; } $appearing_method_id = $this->getAppearingMethodId($declaring_method_id); if (!$appearing_method_id) { return $params; } list($appearing_fq_class_name, $appearing_method_name) = explode('::', $appearing_method_id); $class_storage = $this->classlike_storage_provider->get($appearing_fq_class_name); if (!isset($class_storage->overridden_method_ids[$appearing_method_name])) { return $params; } if (!isset($class_storage->documenting_method_ids[$appearing_method_name])) { return $params; } $overridden_method_id = $class_storage->documenting_method_ids[$appearing_method_name]; $overridden_storage = $this->getStorage($overridden_method_id); list($overriding_fq_class_name) = explode('::', $overridden_method_id); foreach ($params as $i => $param) { if (isset($overridden_storage->params[$i]->type) && $overridden_storage->params[$i]->has_docblock_type && $overridden_storage->params[$i]->name === $param->name ) { $params[$i] = clone $param; /** @var Type\Union $params[$i]->type */ $params[$i]->type = clone $overridden_storage->params[$i]->type; if ($source) { $overridden_class_storage = $this->classlike_storage_provider->get($overriding_fq_class_name); $params[$i]->type = self::localizeType( $source->getCodebase(), $params[$i]->type, $appearing_fq_class_name, $overridden_class_storage->name ); } if ($params[$i]->signature_type && $params[$i]->signature_type->isNullable() ) { $params[$i]->type->addType(new Type\Atomic\TNull); } $params[$i]->type_location = $overridden_storage->params[$i]->type_location; } } return $params; } throw new \UnexpectedValueException('Cannot get method params for ' . $method_id); } public static function localizeType( Codebase $codebase, Type\Union $type, string $appearing_fq_class_name, string $base_fq_class_name ) : Type\Union { $class_storage = $codebase->classlike_storage_provider->get($appearing_fq_class_name); $extends = $class_storage->template_type_extends; if (!$extends) { return $type; } $type = clone $type; foreach ($type->getAtomicTypes() as $key => $atomic_type) { if ($atomic_type instanceof Type\Atomic\TTemplateParam) { if ($atomic_type->defining_class === $base_fq_class_name) { if (isset($extends[$base_fq_class_name][$atomic_type->param_name])) { $extended_param = $extends[$base_fq_class_name][$atomic_type->param_name]; $type->removeType($key); $type = Type::combineUnionTypes( $type, $extended_param, $codebase ); } } } if ($atomic_type instanceof Type\Atomic\TTemplateParamClass) { if ($atomic_type->defining_class === $base_fq_class_name) { if (isset($extends[$base_fq_class_name][$atomic_type->param_name])) { $extended_param = $extends[$base_fq_class_name][$atomic_type->param_name]; $types = \array_values($extended_param->getAtomicTypes()); if (count($types) === 1 && $types[0] instanceof Type\Atomic\TNamedObject) { $atomic_type->as_type = $types[0]; } else { $atomic_type->as_type = null; } } } } if ($atomic_type instanceof Type\Atomic\TArray || $atomic_type instanceof Type\Atomic\TIterable || $atomic_type instanceof Type\Atomic\TGenericObject ) { foreach ($atomic_type->type_params as &$type_param) { $type_param = self::localizeType( $codebase, $type_param, $appearing_fq_class_name, $base_fq_class_name ); } } if ($atomic_type instanceof Type\Atomic\TCallable || $atomic_type instanceof Type\Atomic\TFn ) { if ($atomic_type->params) { foreach ($atomic_type->params as $param) { if ($param->type) { $param->type = self::localizeType( $codebase, $param->type, $appearing_fq_class_name, $base_fq_class_name ); } } } if ($atomic_type->return_type) { $atomic_type->return_type = self::localizeType( $codebase, $atomic_type->return_type, $appearing_fq_class_name, $base_fq_class_name ); } } } return $type; } /** * @param string $method_id * * @return bool */ public function isVariadic($method_id) { $declaring_method_id = $this->getDeclaringMethodId($method_id); if (!$declaring_method_id) { return false; } $method_id = $declaring_method_id; list($fq_class_name, $method_name) = explode('::', $method_id); return $this->classlike_storage_provider->get($fq_class_name)->methods[$method_name ?: '']->variadic; } /** * @param string $method_id * @param string $self_class * @param array|null $args * * @return Type\Union|null */ public function getMethodReturnType( $method_id, &$self_class, \Psalm\Internal\Analyzer\SourceAnalyzer $source_analyzer = null, array $args = null ) { list($original_fq_class_name, $original_method_name) = explode('::', $method_id); $original_fq_class_name = $this->classlikes->getUnAliasedName($original_fq_class_name); $original_class_storage = $this->classlike_storage_provider->get($original_fq_class_name); if (isset($original_class_storage->pseudo_methods[strtolower($original_method_name)])) { return $original_class_storage->pseudo_methods[strtolower($original_method_name)]->return_type; } $declaring_method_id = $this->getDeclaringMethodId($method_id); if (!$declaring_method_id) { return null; } $appearing_method_id = $this->getAppearingMethodId($method_id); if (!$appearing_method_id) { list($fq_class_name, $method_name) = explode('::', $method_id); $fq_class_name = $this->classlikes->getUnAliasedName($fq_class_name); $class_storage = $this->classlike_storage_provider->get($fq_class_name); if ($class_storage->abstract && isset($class_storage->overridden_method_ids[$method_name])) { $appearing_method_id = reset($class_storage->overridden_method_ids[$method_name]); } else { return null; } } list($appearing_fq_class_name, $appearing_method_name) = explode('::', $appearing_method_id); $appearing_fq_class_storage = $this->classlike_storage_provider->get($appearing_fq_class_name); if (!$appearing_fq_class_storage->user_defined && !$appearing_fq_class_storage->stubbed && CallMap::inCallMap($appearing_method_id) ) { if ($appearing_method_id === 'Closure::fromcallable' && isset($args[0]) && $source_analyzer && ($first_arg_type = $source_analyzer->getNodeTypeProvider()->getType($args[0]->value)) && $first_arg_type->isSingle() ) { foreach ($first_arg_type->getAtomicTypes() as $atomic_type) { if ($atomic_type instanceof Type\Atomic\TCallable || $atomic_type instanceof Type\Atomic\TFn ) { $callable_type = clone $atomic_type; return new Type\Union([new Type\Atomic\TFn( 'Closure', $callable_type->params, $callable_type->return_type )]); } if ($atomic_type instanceof Type\Atomic\TNamedObject && $this->methodExists($atomic_type->value . '::__invoke') ) { $invokable_storage = $this->getStorage($atomic_type->value . '::__invoke'); return new Type\Union([new Type\Atomic\TFn( 'Closure', $invokable_storage->params, $invokable_storage->return_type )]); } } } $callmap_callables = CallMap::getCallablesFromCallMap($appearing_method_id); if (!$callmap_callables || $callmap_callables[0]->return_type === null) { throw new \UnexpectedValueException('Shouldn’t get here'); } $return_type_candidate = $callmap_callables[0]->return_type; if ($return_type_candidate->isFalsable()) { $return_type_candidate->ignore_falsable_issues = true; } return $return_type_candidate; } $storage = $this->getStorage($declaring_method_id); if ($storage->return_type) { $self_class = $appearing_fq_class_storage->name; return clone $storage->return_type; } $class_storage = $this->classlike_storage_provider->get($appearing_fq_class_name); if (!isset($class_storage->overridden_method_ids[$appearing_method_name])) { return null; } $candidate_type = null; foreach ($class_storage->overridden_method_ids[$appearing_method_name] as $overridden_method_id) { $overridden_storage = $this->getStorage($overridden_method_id); if ($overridden_storage->return_type) { if ($overridden_storage->return_type->isNull()) { if ($candidate_type && !$candidate_type->isVoid()) { return null; } $candidate_type = Type::getVoid(); continue; } list($fq_overridden_class) = explode('::', $overridden_method_id); $overridden_class_storage = $this->classlike_storage_provider->get($fq_overridden_class); $overridden_return_type = clone $overridden_storage->return_type; $self_class = $overridden_class_storage->name; if ($candidate_type && $source_analyzer ) { $old_contained_by_new = TypeAnalyzer::isContainedBy( $source_analyzer->getCodebase(), $candidate_type, $overridden_return_type ); $new_contained_by_old = TypeAnalyzer::isContainedBy( $source_analyzer->getCodebase(), $overridden_return_type, $candidate_type ); if (!$old_contained_by_new && !$new_contained_by_old) { $attempted_intersection = Type::intersectUnionTypes( $candidate_type, $overridden_return_type ); if ($attempted_intersection) { $candidate_type = $attempted_intersection; continue; } return null; } if ($old_contained_by_new) { continue; } } $candidate_type = $overridden_return_type; } } return $candidate_type; } /** * @param string $method_id * * @return bool */ public function getMethodReturnsByRef($method_id) { $method_id = $this->getDeclaringMethodId($method_id); if (!$method_id) { return false; } list($fq_class_name) = explode('::', $method_id); $fq_class_storage = $this->classlike_storage_provider->get($fq_class_name); if (!$fq_class_storage->user_defined && CallMap::inCallMap($method_id)) { return false; } $storage = $this->getStorage($method_id); return $storage->returns_by_ref; } /** * @param string $method_id * @param CodeLocation|null $defined_location * * @return CodeLocation|null */ public function getMethodReturnTypeLocation( $method_id, CodeLocation &$defined_location = null ) { $method_id = $this->getDeclaringMethodId($method_id); if ($method_id === null) { return null; } $storage = $this->getStorage($method_id); if (!$storage->return_type_location) { $overridden_method_ids = $this->getOverriddenMethodIds($method_id); foreach ($overridden_method_ids as $overridden_method_id) { $overridden_storage = $this->getStorage($overridden_method_id); if ($overridden_storage->return_type_location) { $defined_location = $overridden_storage->return_type_location; break; } } } return $storage->return_type_location; } /** * @param string $method_id * @param string $declaring_method_id * * @return void */ public function setDeclaringMethodId( $method_id, $declaring_method_id ) { list($fq_class_name, $method_name) = explode('::', $method_id); $class_storage = $this->classlike_storage_provider->get($fq_class_name); $class_storage->declaring_method_ids[$method_name] = $declaring_method_id; } /** * @param string $method_id * @param string $appearing_method_id * * @return void */ public function setAppearingMethodId( $method_id, $appearing_method_id ) { list($fq_class_name, $method_name) = explode('::', $method_id); $class_storage = $this->classlike_storage_provider->get($fq_class_name); $class_storage->appearing_method_ids[$method_name] = $appearing_method_id; } /** * @param string $method_id * * @return string|null */ public function getDeclaringMethodId($method_id) { $method_id = strtolower($method_id); list($fq_class_name, $method_name) = explode('::', $method_id); $fq_class_name = $this->classlikes->getUnAliasedName($fq_class_name); $class_storage = $this->classlike_storage_provider->get($fq_class_name); if (isset($class_storage->declaring_method_ids[$method_name])) { return $class_storage->declaring_method_ids[$method_name]; } if ($class_storage->abstract && isset($class_storage->overridden_method_ids[$method_name])) { return reset($class_storage->overridden_method_ids[$method_name]); } } /** * Get the class this method appears in (vs is declared in, which could give a trait) * * @param string $method_id * * @return string|null */ public function getAppearingMethodId($method_id) { $method_id = strtolower($method_id); list($fq_class_name, $method_name) = explode('::', $method_id); $fq_class_name = $this->classlikes->getUnAliasedName($fq_class_name); $class_storage = $this->classlike_storage_provider->get($fq_class_name); if (isset($class_storage->appearing_method_ids[$method_name])) { return $class_storage->appearing_method_ids[$method_name]; } } /** * @param string $method_id * * @return array */ public function getOverriddenMethodIds($method_id) { list($fq_class_name, $method_name) = explode('::', $method_id); $class_storage = $this->classlike_storage_provider->get($fq_class_name); if (isset($class_storage->overridden_method_ids[$method_name])) { return $class_storage->overridden_method_ids[$method_name]; } return []; } /** * @param string $original_method_id * * @return string */ public function getCasedMethodId($original_method_id) { $method_id = $this->getDeclaringMethodId($original_method_id); if ($method_id === null) { return $original_method_id; } $storage = $this->getStorage($method_id); list($old_fq_class_name, $old_method_name) = explode('::', $original_method_id); list($fq_class_name, $new_method_name) = explode('::', $method_id); if (strtolower($old_method_name) === strtolower($new_method_name) && strtolower($old_fq_class_name) !== $old_fq_class_name ) { return $old_fq_class_name . '::' . $storage->cased_name; } return $fq_class_name . '::' . $storage->cased_name; } /** * @param string $method_id * * @return ?MethodStorage */ public function getUserMethodStorage($method_id) { $declaring_method_id = $this->getDeclaringMethodId($method_id); if (!$declaring_method_id) { throw new \UnexpectedValueException('$storage should not be null for ' . $method_id); } $storage = $this->getStorage($declaring_method_id); if (!$storage->location) { return null; } return $storage; } /** * @param string $method_id * * @return ClassLikeStorage */ public function getClassLikeStorageForMethod($method_id) { list($fq_class_name, $method_name) = explode('::', $method_id); if ($this->existence_provider->has($fq_class_name)) { if ($this->existence_provider->doesMethodExist( $fq_class_name, $method_name, null, null )) { return $this->classlike_storage_provider->get($fq_class_name); } } $declaring_method_id = $this->getDeclaringMethodId($method_id); if (!$declaring_method_id) { if (CallMap::inCallMap($method_id)) { $declaring_method_id = $method_id; } else { throw new \UnexpectedValueException('$storage should not be null for ' . $method_id); } } list($declaring_fq_class_name) = explode('::', $declaring_method_id); return $this->classlike_storage_provider->get($declaring_fq_class_name); } /** * @param string $method_id * * @return MethodStorage */ public function getStorage($method_id) { list($fq_class_name, $method_name) = explode('::', $method_id); try { $class_storage = $this->classlike_storage_provider->get($fq_class_name); } catch (\InvalidArgumentException $e) { throw new \UnexpectedValueException($e->getMessage()); } $method_name_lc = strtolower($method_name); if (!isset($class_storage->methods[$method_name_lc])) { throw new \UnexpectedValueException('$storage should not be null for ' . $method_id); } return $class_storage->methods[$method_name_lc]; } }