/** * @param Node $node * A node of the type indicated by the method name that we'd * like to figure out the type that it produces. * * @return string * The class name represented by the given call */ public function visitProp(Node $node) : string { if (!($node->children['expr']->kind == \ast\AST_VAR && !$node->children['expr']->children['name'] instanceof Node)) { return ''; } // $var->prop->method() $var = $node->children['expr']; $class = null; if ($var->children['name'] == 'this') { // If we're not in a class scope, 'this' won't work if (!$this->context->isInClassScope()) { Log::err(Log::ESTATIC, 'Using $this when not in object context', $this->context->getFile(), $node->lineno); return ''; } // $this->$node->method() if ($node->children['prop'] instanceof Node) { // Too hard. Giving up. return ''; } $class = $this->context->getClassInScope($this->code_base); } else { // Get the list of viable class types for the // variable $union_type = AST::varUnionType($this->context, $var)->nonNativeTypes()->nonGenericArrayTypes(); if ($union_type->isEmpty()) { return ''; } $class_fqsen = $union_type->head()->asFQSEN(); if (!$this->code_base->hasClassWithFQSEN($class_fqsen)) { return ''; } $class = $this->code_base->getClassByFQSEN($class_fqsen); } $property_name = $node->children['prop']; if (!$class->hasPropertyWithName($this->code_base, $property_name)) { // If we can't find the property, there's // no type. Thie issue should be caught // elsewhere. return ''; } try { $property = $class->getPropertyByNameInContext($this->code_base, $property_name, $this->context); } catch (AccessException $exception) { Log::err(Log::EACCESS, $exception->getMessage(), $this->context->getFile(), $node->lineno); return ''; } $union_type = $property->getUnionType()->nonNativeTypes(); if ($union_type->isEmpty()) { // If we don't have a type on the property we // can't figure out the class type. return ''; } else { // Return the first type on the property // that could be a reference to a class return (string) $union_type->head()->asFQSEN(); } // No such property was found, or none were classes // that could be found return ''; }
/** * @param Node $node * A node of the type indicated by the method name that we'd * like to figure out the type that it produces. * * @return string * The class name represented by the given call */ public function visitNew(Node $node) : string { // Things of the form `new $class_name();` if ($node->children['class']->kind == \ast\AST_VAR) { return ''; } // Things of the form `new $method->name()` if ($node->children['class']->kind !== \ast\AST_NAME) { return ''; } $class_name = $node->children['class']->children['name']; if (!in_array($class_name, ['self', 'static', 'parent'])) { return AST::qualifiedName($this->context, $node->children['class']); } if (!$this->context->isInClassScope()) { Log::err(Log::ESTATIC, "Cannot access {$class_name}:: when no class scope is active", $this->context->getFile(), $node->lineno); return ''; } if ($class_name == 'static') { return (string) $this->context->getClassFQSEN(); } if ($class_name == 'self') { if ($this->context->isGlobalScope()) { assert(false, "Unimplemented branch is required for {$this->context}"); } else { return (string) $this->context->getClassFQSEN(); } } if ($class_name == 'parent') { $clazz = $this->context->getClassInScope($this->code_base); if (!$clazz->hasParentClassFQSEN()) { return ''; } return (string) $clazz->getParentClassFQSEN(); } return ''; }
/** * @param Node $node * A node to parse * * @return Context * A new or an unchanged context resulting from * parsing the node */ public function visitReturn(Node $node) : Context { // Don't check return types in traits if ($this->context->isInClassScope()) { $clazz = $this->context->getClassInScope($this->code_base); if ($clazz->isTrait()) { return $this->context; } } // Make sure we're actually returning from a method. if (!$this->context->isMethodScope() && !$this->context->isClosureScope()) { return $this->context; } // Get the method/function/closure we're in $method = null; if ($this->context->isClosureScope()) { $method = $this->context->getClosureInScope($this->code_base); } else { if ($this->context->isMethodScope()) { $method = $this->context->getMethodInScope($this->code_base); } } assert(!empty($method), "We're supposed to be in either method or closure scope."); // Figure out what we intend to return $method_return_type = $method->getUnionType(); // Figure out what is actually being returned $expression_type = UnionType::fromNode($this->context, $this->code_base, $node->children['expr']); // If there is no declared type, see if we can deduce // what it should be based on the return type if ($method_return_type->isEmpty() || $method->isReturnTypeUndefined()) { $method->setIsReturnTypeUndefined(true); // Set the inferred type of the method based // on what we're returning $method->getUnionType()->addUnionType($expression_type); // No point in comparing this type to the // type we just set return $this->context; } if (!$method->isReturnTypeUndefined() && !$expression_type->canCastToExpandedUnionType($method_return_type, $this->code_base)) { Issue::emit(Issue::TypeMismatchReturn, $this->context->getFile(), $node->lineno ?? 0, (string) $expression_type, $method->getName(), (string) $method_return_type); } if ($method->isReturnTypeUndefined()) { // Add the new type to the set of values returned by the // method $method->getUnionType()->addUnionType($expression_type); } return $this->context; }
private function visitClassNode(Node $node) : UnionType { // Things of the form `new $class_name();` if ($node->kind == \ast\AST_VAR) { return new UnionType(); } // Anonymous class of form `new class { ... }` if ($node->kind == \ast\AST_CLASS && $node->flags & \ast\flags\CLASS_ANONYMOUS) { // Generate a stable name for the anonymous class $anonymous_class_name = (new ContextNode($this->code_base, $this->context, $node))->getUnqualifiedNameForAnonymousClass(); // Turn that into a fully qualified name $fqsen = FullyQualifiedClassName::fromStringInContext($anonymous_class_name, $this->context); // Turn that into a union type return Type::fromFullyQualifiedString((string) $fqsen)->asUnionType(); } // Things of the form `new $method->name()` if ($node->kind !== \ast\AST_NAME) { return new UnionType(); } // Get the name of the class $class_name = $node->children['name']; // If this is a straight-forward class name, recurse into the // class node and get its type if (!Type::isSelfTypeString($class_name)) { // TODO: does anyone else call this method? return self::unionTypeFromClassNode($this->code_base, $this->context, $node); } // This is a self-referential node if (!$this->context->isInClassScope()) { Log::err(Log::ESTATIC, "Cannot access {$class_name} when not in a class scope", $this->context->getFile(), $node->lineno); return new UnionType(); } // Reference to a parent class if ($class_name === 'parent') { $class = $this->context->getClassInScope($this->code_base); if (!$class->hasParentClassFQSEN()) { Log::err(Log::ESTATIC, "Reference to parent of parentless class {$class->getFQSEN()}", $this->context->getFile(), $node->lineno); return new UnionType(); } return Type::fromFullyQualifiedString((string) $class->getParentClassFQSEN())->asUnionType(); } return Type::fromFullyQualifiedString((string) $this->context->getClassFQSEN())->asUnionType(); }
/** * @param Node $node * A node to parse * * @return Context * A new or an unchanged context resulting from * parsing the node */ public function visitReturn(Node $node) : Context { // Don't check return types in traits if ($this->context->isInClassScope()) { $clazz = $this->context->getClassInScope($this->code_base); if ($clazz->isTrait()) { return $this->context; } } // Make sure we're actually returning from a method. if (!$this->context->isMethodScope() && !$this->context->isClosureScope()) { return $this->context; } // Get the method/function/closure we're in $method = null; if ($this->context->isClosureScope()) { $method = $this->context->getClosureInScope($this->code_base); } else { if ($this->context->isMethodScope()) { $method = $this->context->getMethodInScope($this->code_base); } else { assert(false, "We're supposed to be in either method or closure scope."); } } // Figure out what we intend to return $method_return_type = $method->getUnionType(); // Figure out what is actually being returned $expression_type = UnionType::fromNode($this->context, $this->code_base, $node->children['expr']); // If there is no declared type, see if we can deduce // what it should be based on the return type if ($method_return_type->isEmpty()) { // Set the inferred type of the method based // on what we're returning $method->getUnionType()->addUnionType($expression_type); // No point in comparing this type to the // type we just set return $this->context; } if (!$expression_type->canCastToExpandedUnionType($method_return_type, $this->code_base)) { Log::err(Log::ETYPE, "return {$expression_type} but {$method->getName()}() is declared to return {$method_return_type}", $this->context->getFile(), $node->lineno); } return $this->context; }
/** * @param Node $node * A node of the type indicated by the method name that we'd * like to figure out the type that it produces. * * @return string * The class name represented by the given call */ public function visitNew(Node $node) : string { // Things of the form `new $class_name();` if ($node->children['class']->kind == \ast\AST_VAR) { return ''; } // Anonymous class // $v = new class { ... } if ($node->children['class']->kind == \ast\AST_CLASS && $node->children['class']->flags & \ast\flags\CLASS_ANONYMOUS) { return (new ContextNode($this->code_base, $this->context, $node->children['class']))->getUnqualifiedNameForAnonymousClass(); } // Things of the form `new $method->name()` if ($node->children['class']->kind !== \ast\AST_NAME) { return ''; } $class_name = $node->children['class']->children['name']; if (!in_array($class_name, ['self', 'static', 'parent'])) { return (string) UnionTypeVisitor::unionTypeFromClassNode($this->code_base, $this->context, $node->children['class']); } if (!$this->context->isInClassScope()) { Log::err(Log::ESTATIC, "Cannot access {$class_name}:: when no class scope is active", $this->context->getFile(), $node->lineno); return ''; } if ($class_name == 'static') { return (string) $this->context->getClassFQSEN(); } if ($class_name == 'self') { if ($this->context->isGlobalScope()) { assert(false, "Unimplemented branch is required for {$this->context}"); } else { return (string) $this->context->getClassFQSEN(); } } if ($class_name == 'parent') { $clazz = $this->context->getClassInScope($this->code_base); if (!$clazz->hasParentClassFQSEN()) { return ''; } return (string) $clazz->getParentClassFQSEN(); } return ''; }
/** * @param string $string * A string representing a type * * @param Context $context * The context in which the type string was * found * * @return Type * Parse a type from the given string */ public static function fromStringInContext(string $string, Context $context) : Type { assert($string !== '', "Type cannot be empty in {$context}"); $namespace = null; // Extract the namespace if the type string is // fully-qualified if ('\\' === $string[0]) { list($namespace, $string) = self::namespaceAndTypeFromString($string); } $type_name = $string; // @var bool // True if this type name if of the form 'C[]' $is_generic_array_type = self::isGenericArrayString($type_name); // If this is a generic array type, get the name of // the type of each element $non_generic_array_type_name = $type_name; if ($is_generic_array_type && false !== ($pos = strpos($type_name, '[]'))) { $non_generic_array_type_name = substr($type_name, 0, $pos); } // Check to see if the type name is mapped via // a using clause. // // Gotta check this before checking for native types // because there are monsters out there that will // remap the names via things like `use \Foo\String`. if ($context->hasNamespaceMapFor(T_CLASS, $non_generic_array_type_name)) { $fqsen = $context->getNamespaceMapFor(T_CLASS, $non_generic_array_type_name); if ($is_generic_array_type) { return GenericArrayType::fromElementType(Type::make($fqsen->getNamespace(), $fqsen->getName())); } return Type::make($fqsen->getNamespace(), $fqsen->getName()); } // If this was a fully qualified type, we're all // set if (!empty($namespace)) { return self::fromNamespaceAndName($namespace, $type_name); } if ($is_generic_array_type && self::isNativeTypeString($type_name)) { return self::fromInternalTypeName($type_name); } else { // Check to see if its a builtin type switch (self::canonicalNameFromName($type_name)) { case 'array': return \Phan\Language\Type\ArrayType::instance(); case 'bool': return \Phan\Language\Type\BoolType::instance(); case 'callable': return \Phan\Language\Type\CallableType::instance(); case 'float': return \Phan\Language\Type\FloatType::instance(); case 'int': return \Phan\Language\Type\IntType::instance(); case 'mixed': return \Phan\Language\Type\MixedType::instance(); case 'null': return \Phan\Language\Type\NullType::instance(); case 'object': return \Phan\Language\Type\ObjectType::instance(); case 'resource': return \Phan\Language\Type\ResourceType::instance(); case 'string': return \Phan\Language\Type\StringType::instance(); case 'void': return \Phan\Language\Type\VoidType::instance(); } } // Things like `self[]` or `$this[]` if ($is_generic_array_type && self::isSelfTypeString($non_generic_array_type_name) && $context->isInClassScope()) { // Callers of this method should be checking on their own // to see if this type is a reference to 'parent' and // dealing with it there. We don't want to have this // method be dependent on the code base assert('parent' !== $non_generic_array_type_name, __METHOD__ . " does not know how to handle the type name 'parent' in {$context}"); return GenericArrayType::fromElementType(static::fromFullyQualifiedString((string) $context->getClassFQSEN())); } // If this is a type referencing the current class // in scope such as 'self' or 'static', return that. if (self::isSelfTypeString($type_name) && $context->isInClassScope()) { // Callers of this method should be checking on their own // to see if this type is a reference to 'parent' and // dealing with it there. We don't want to have this // method be dependent on the code base assert('parent' !== $type_name, __METHOD__ . " does not know how to handle the type name 'parent' in {$context}"); return static::fromFullyQualifiedString((string) $context->getClassFQSEN()); } // Attach the context's namespace to the type name return self::fromNamespaceAndName($context->getNamespace() ?: '\\', $type_name); }
/** * @param Context $context * The context in which the FQSEN string was found * * @param $fqsen_string * An FQSEN string like '\Namespace\Class::methodName' * * @return FullyQualifiedMethodName */ public static function fromStringInContext(string $fqsen_string, Context $context) { // Test to see if we have a class defined if (false === strpos($fqsen_string, '::')) { assert($context->isInClassScope(), "Cannot reference class element without class name when not in class scope."); $fully_qualified_class_name = $context->getClassFQSEN(); } else { assert(false !== strpos($fqsen_string, '::'), "Fully qualified class element lacks '::' delimiter"); list($class_name_string, $fqsen_string) = explode('::', $fqsen_string); $fully_qualified_class_name = FullyQualifiedClassName::fromStringInContext($class_name_string, $context); } // Split off the alternate ID $parts = explode(',', $fqsen_string); $name = $parts[0]; $alternate_id = (int) ($parts[1] ?? 0); assert(is_int($alternate_id), "Alternate must be an integer"); return static::make($fully_qualified_class_name, $name, $alternate_id); }
/** * @param string $string * A string representing a type * * @param Context $context * The context in which the type string was * found * * @return Type * Parse a type from the given string */ public static function fromStringInContext(string $string, Context $context) : Type { assert($string !== '', "Type cannot be empty in {$context}"); $namespace = null; // Extract the namespace if the type string is // fully-qualified if ('\\' === $string[0]) { list($namespace, $string) = self::namespaceAndTypeFromString($string); } $type_name = strtolower($string); // Check to see if the type name is mapped via // a using clause. // // Gotta check this before checking for native types // because there are monsters out there that will // remap the names via things like `use \Foo\String`. if ($context->hasNamespaceMapFor(T_CLASS, $type_name)) { $fqsen = $context->getNamespaceMapFor(T_CLASS, $type_name); return new Type($fqsen->getNamespace(), $fqsen->getName()); } // If this was a fully qualified type, we're all // set if (!empty($namespace)) { return self::fromNamespaceAndName($namespace, $type_name); } // Check to see if its a builtin type switch (self::canonicalNameFromName($type_name)) { case 'array': return \Phan\Language\Type\ArrayType::instance(); case 'bool': return \Phan\Language\Type\BoolType::instance(); case 'callable': return \Phan\Language\Type\CallableType::instance(); case 'float': return \Phan\Language\Type\FloatType::instance(); case 'int': return \Phan\Language\Type\IntType::instance(); case 'mixed': return \Phan\Language\Type\MixedType::instance(); case 'null': return \Phan\Language\Type\NullType::instance(); case 'object': return \Phan\Language\Type\ObjectType::instance(); case 'resource': return \Phan\Language\Type\ResourceType::instance(); case 'string': return \Phan\Language\Type\StringType::instance(); case 'void': return \Phan\Language\Type\VoidType::instance(); } // If this is a type referencing the current class // in scope such as 'self' or 'static', return that. if (self::isSelfTypeString($type_name) && $context->isInClassScope()) { return static::fromFullyQualifiedString((string) $context->getClassFQSEN()); } // Attach the context's namespace to the type name return self::fromNamespaceAndName($context->getNamespace() ?: '\\', $type_name); }
/** * @param Node $node * A node of the type indicated by the method name that we'd * like to figure out the type that it produces. * * @return string * The class name represented by the given call */ public function visitMethodCall(Node $node) : string { if ($node->children['expr']->kind == \ast\AST_VAR) { if ($node->children['expr']->children['name'] instanceof Node) { return ''; } // $var->method() if ($node->children['expr']->children['name'] == 'this') { if (!$this->context->isInClassScope()) { Log::err(Log::ESTATIC, 'Using $this when not in object context', $this->context->getFile(), $node->lineno); return ''; } return (string) $this->context->getClassFQSEN(); } $variable_name = $node->children['expr']->children['name']; if (!$this->context->getScope()->hasVariableWithName($variable_name)) { // Got lost, couldn't find the variable in the current scope // If it really isn't defined, it will be caught by the // undefined var error return ''; } $variable = $this->context->getScope()->getVariableWithName($variable_name); // Hack - loop through the possible types of the var and assume // first found class is correct foreach ($variable->getUnionType()->nonGenericArrayTypes()->getTypeList() as $type) { $child_class_fqsen = FullyQualifiedClassName::fromStringInContext((string) $type, $this->context); if ($this->code_base->hasClassWithFQSEN($child_class_fqsen)) { return (string) FullyQualifiedClassName::fromStringInContext((string) $type, $this->context); } } // Could not find name return ''; } if ($node->children['expr']->kind == \ast\AST_PROP) { $prop = $node->children['expr']; if (!($prop->children['expr']->kind == \ast\AST_VAR && !$prop->children['expr']->children['name'] instanceof Node)) { return ''; } // $var->prop->method() $var = $prop->children['expr']; if ($var->children['name'] == 'this') { // If we're not in a class scope, 'this' won't work if (!$this->context->isInClassScope()) { Log::err(Log::ESTATIC, 'Using $this when not in object context', $this->context->getFile(), $node->lineno); return ''; } // Get the class in scope $clazz = $this->code_base->getClassByFQSEN($this->context->getClassFQSEN()); if ($prop->children['prop'] instanceof Node) { // $this->$prop->method() - too dynamic, give up return ''; } $property_name = $prop->children['prop']; if ($clazz->hasPropertyWithName($this->code_base, $property_name)) { try { $property = $clazz->getPropertyByNameInContext($this->code_base, $property_name, $this->context); } catch (AccessException $exception) { Log::err(Log::EACCESS, $exception->getMessage(), $this->context->getFile(), $node->lineno); return ''; } // Find the first viable property type foreach ($property->getUnionType()->nonGenericArrayTypes()->getTypeList() as $type) { $class_fqsen = FullyQualifiedClassName::fromStringInContext((string) $type, $this->context); if ($this->code_base->hasClassWithFQSEN($class_fqsen)) { return (string) $class_fqsen; } } } // No such property was found, or none were classes // that could be found return ''; } return ''; } if ($node->children['expr']->kind == \ast\AST_METHOD_CALL) { // Get the type returned by the first method // call. $union_type = UnionType::fromNode($this->context, $this->code_base, $node->children['expr']); // Find the subset of types that are viable // classes $viable_class_types = $union_type->nonNativeTypes()->nonGenericArrayTypes(); // If there are no non-native types, give up if ($viable_class_types->isEmpty()) { return ''; } // Return the first non-native type in the // list and hope its a class return (string) $viable_class_types->head(); } return ''; }
/** * @param string $name * The name of the property * * @param Context $context * The context of the caller requesting the property * * @return Property * A property with the given name * * @throws IssueException * An exception may be thrown if the caller does not * have access to the given property from the given * context */ public function getPropertyByNameInContext(CodeBase $code_base, string $name, Context $context) : Property { // Get the FQSEN of the property we're looking for $property_fqsen = FullyQualifiedPropertyName::make($this->getFQSEN(), $name); $property = null; // Figure out if we have the property $has_property = $code_base->hasPropertyWithFQSEN($property_fqsen); // Figure out if the property is accessible $is_property_accessible = false; if ($has_property) { $property = $code_base->getPropertyByFQSEN($property_fqsen); $is_remote_access = !$context->isInClassScope() || !$context->getClassInScope($code_base)->getUnionType()->canCastToExpandedUnionType($this->getUnionType(), $code_base); $is_property_accessible = !$is_remote_access || $property->isPublic(); } // If the property exists and is accessible, return it if ($is_property_accessible) { return $property; } // Check to see if we can use a __get magic method if ($this->hasMethodWithName($code_base, '__get')) { $method = $this->getMethodByName($code_base, '__get'); // Make sure the magic method is accessible if ($method->isPrivate()) { throw new IssueException(Issue::fromType(Issue::AccessPropertyPrivate)($context->getFile(), $context->getLineNumberStart(), [(string) $property_fqsen])); } else { if ($method->isProtected()) { throw new IssueException(Issue::fromType(Issue::AccessPropertyProtected)($context->getFile(), $context->getLineNumberStart(), [(string) $property_fqsen])); } } $property = new Property($context, $name, $method->getUnionType(), 0, $property_fqsen); $this->addProperty($code_base, $property, new None()); return $property; } else { if ($has_property) { // If we have a property, but its inaccessible, emit // an issue if ($property->isPrivate()) { throw new IssueException(Issue::fromType(Issue::AccessPropertyPrivate)($context->getFile(), $context->getLineNumberStart(), ["{$this->getFQSEN()}::\${$property->getName()}"])); } if ($property->isProtected()) { throw new IssueException(Issue::fromType(Issue::AccessPropertyProtected)($context->getFile(), $context->getLineNumberStart(), ["{$this->getFQSEN()}::\${$property->getName()}"])); } } } // Check to see if missing properties are allowed // or we're stdclass if (Config::get()->allow_missing_properties || $this->getFQSEN() == FullyQualifiedClassName::getStdClassFQSEN()) { $property = new Property($context, $name, new UnionType(), 0, $property_fqsen); $this->addProperty($code_base, $property, new None()); return $property; } throw new IssueException(Issue::fromType(Issue::UndeclaredProperty)($context->getFile(), $context->getLineNumberStart(), ["{$this->getFQSEN()}::\${$name}}"])); }
/** * @param CodeBase $code_base * The code base in which to find classes * * @param Context $context * The context in which we're resolving this union * type. * * @return Clazz[] * A list of classes representing the non-native types * associated with this UnionType * * @throws CodeBaseException * An exception is thrown if a non-native type does not have * an associated class */ public function asClassList(CodeBase $code_base, Context $context) { // Iterate over each viable class type to see if any // have the constant we're looking for foreach ($this->nonNativeTypes()->getTypeSet() as $class_type) { // Get the class FQSEN $class_fqsen = $class_type->asFQSEN(); if ($class_type->isStaticType()) { if (!$context->isInClassScope()) { throw new IssueException(Issue::fromType(Issue::ContextNotObject)($context->getFile(), $context->getLineNumberStart(), [(string) $class_type])); } (yield $context->getClassInScope($code_base)); } else { // See if the class exists if (!$code_base->hasClassWithFQSEN($class_fqsen)) { throw new CodeBaseException($class_fqsen, "Cannot find class {$class_fqsen}"); } (yield $code_base->getClassByFQSEN($class_fqsen)); } } }
/** * @param CodeBase $code_base * The global code base * * @param FunctionInterface $method * The method we're analyzing arguments for * * @param Node $node * The node holding the method call we're looking at * * @param Context $context * The context in which we see the call * * @return null * * @see \Phan\Deprecated\Pass2::arglist_type_check * Formerly `function arglist_type_check` */ private static function analyzeParameterList(CodeBase $code_base, FunctionInterface $method, Node $node, Context $context) { foreach ($node->children ?? [] as $i => $argument) { // Get the parameter associated with this argument $parameter = $method->getParameterList()[$i] ?? null; // This issue should be caught elsewhere if (!$parameter) { continue; } // If this is a pass-by-reference parameter, make sure // we're passing an allowable argument if ($parameter->isPassByReference()) { if (!$argument instanceof \ast\Node || $argument->kind != \ast\AST_VAR && $argument->kind != \ast\AST_DIM && $argument->kind != \ast\AST_PROP && $argument->kind != \ast\AST_STATIC_PROP) { Issue::emit(Issue::TypeNonVarPassByRef, $context->getFile(), $node->lineno ?? 0, $i + 1, (string) $method->getFQSEN()); } else { $variable_name = (new ContextNode($code_base, $context, $argument))->getVariableName(); if (Type::isSelfTypeString($variable_name) && !$context->isInClassScope() && $argument->kind == \ast\AST_STATIC_PROP && $argument->kind == \ast\AST_PROP) { Issue::emit(Issue::ContextNotObject, $context->getFile(), $node->lineno ?? 0, "{$variable_name}"); } } } // Get the type of the argument. We'll check it against // the parameter in a moment $argument_type = UnionType::fromNode($context, $code_base, $argument); // Expand it to include all parent types up the chain $argument_type_expanded = $argument_type->asExpandedTypes($code_base); // Check the method to see if it has the correct // parameter types. If not, keep hunting through // alternates of the method until we find one that // takes the correct types $alternate_parameter = null; $alternate_found = false; foreach ($method->alternateGenerator($code_base) as $alternate_id => $alternate_method) { if (empty($alternate_method->getParameterList()[$i])) { continue; } // Get the parameter associated with this argument $alternate_parameter = $alternate_method->getParameterList()[$i] ?? null; // Expand the types to find all parents and traits $alternate_parameter_type_expanded = $alternate_parameter->getUnionType()->asExpandedTypes($code_base); // See if the argument can be cast to the // parameter if ($argument_type_expanded->canCastToUnionType($alternate_parameter_type_expanded)) { $alternate_found = true; break; } } if (!$alternate_found) { $parameter_name = $alternate_parameter ? $alternate_parameter->getName() : 'unknown'; $parameter_type = $alternate_parameter ? $alternate_parameter->getUnionType() : 'unknown'; if ($method->isInternal()) { Issue::emit(Issue::TypeMismatchArgumentInternal, $context->getFile(), $node->lineno ?? 0, $i + 1, $parameter_name, $argument_type_expanded, (string) $method->getFQSEN(), (string) $parameter_type); } else { Issue::emit(Issue::TypeMismatchArgument, $context->getFile(), $node->lineno ?? 0, $i + 1, $parameter_name, $argument_type_expanded, (string) $method->getFQSEN(), (string) $parameter_type, $method->getFileRef()->getFile(), $method->getFileRef()->getLineNumberStart()); } } } }