mirror of
https://github.com/SerenityOS/serenity
synced 2024-10-07 00:19:27 +00:00
Lagom: Fix leaks in the IDL Wrapper generator
By using RefPtrs to handle interfaces, the IDL parser could store cyclic references to interfaces that import each other. One main example is the "EventTarget.idl" and the "AbortSignal.idl" files, which both reference each other. This caused huge amounts of memory not to be freed on exit. To fix this, the parsed IDL interfaces are now stored in a HashTable of NonnullOwnPtr<Interface>, which serves as the sole reference for every parsed interface. All other usages of the Interface are changed to use references instead of RefPtrs, or occasionally as raw pointers where references don't fit inside the data structures. This new HashTable is static, and as such will automatically be freed prior to exiting the generator. This ensures that the code generator properly cleans up after itself. With this change, The IDL code generators can properly run on Lagom when compiled with the -DENABLE_ADDRESS_SANITIZER=ON flag, and gets compiled properly on the CI :^)
This commit is contained in:
DexesTTP
Linus Groh
parent
67f1ac5de7
commit
2ab8d474c6
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@ -76,7 +76,8 @@ static String convert_enumeration_value_to_cpp_enum_member(String const& value,
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namespace IDL {
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HashMap<String, NonnullRefPtr<Interface>> Parser::s_resolved_imports {};
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HashTable<NonnullOwnPtr<Interface>> Parser::s_interfaces {};
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HashMap<String, Interface*> Parser::s_resolved_imports {};
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void Parser::assert_specific(char ch)
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{
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@ -125,7 +126,7 @@ HashMap<String, String> Parser::parse_extended_attributes()
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}
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static HashTable<String> import_stack;
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Optional<NonnullRefPtr<Interface>> Parser::resolve_import(auto path)
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Optional<Interface&> Parser::resolve_import(auto path)
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{
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auto include_path = LexicalPath::join(import_base_path, path).string();
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if (!Core::File::exists(include_path))
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@ -133,7 +134,7 @@ Optional<NonnullRefPtr<Interface>> Parser::resolve_import(auto path)
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auto real_path = Core::File::real_path_for(include_path);
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if (s_resolved_imports.contains(real_path))
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return s_resolved_imports.find(real_path)->value;
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return *s_resolved_imports.find(real_path)->value;
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if (import_stack.contains(real_path))
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report_parsing_error(String::formatted("Circular import detected: {}", include_path), filename, input, lexer.tell());
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@ -144,10 +145,10 @@ Optional<NonnullRefPtr<Interface>> Parser::resolve_import(auto path)
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report_parsing_error(String::formatted("Failed to open {}: {}", real_path, file_or_error.error()), filename, input, lexer.tell());
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auto data = file_or_error.value()->read_all();
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auto result = Parser(real_path, data, import_base_path).parse();
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auto& result = Parser(real_path, data, import_base_path).parse();
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import_stack.remove(real_path);
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s_resolved_imports.set(real_path, result);
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s_resolved_imports.set(real_path, &result);
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return result;
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}
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@ -709,21 +710,23 @@ void Parser::parse_dictionary(Interface& interface)
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void Parser::parse_interface_mixin(Interface& interface)
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{
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auto mixin_interface = make_ref_counted<Interface>();
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mixin_interface->module_own_path = interface.module_own_path;
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mixin_interface->is_mixin = true;
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auto mixin_interface_ptr = make<Interface>();
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auto& mixin_interface = *mixin_interface_ptr;
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VERIFY(s_interfaces.set(move(mixin_interface_ptr)) == AK::HashSetResult::InsertedNewEntry);
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mixin_interface.module_own_path = interface.module_own_path;
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mixin_interface.is_mixin = true;
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assert_string("interface");
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consume_whitespace();
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assert_string("mixin");
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auto offset = lexer.tell();
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parse_interface(*mixin_interface);
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if (!mixin_interface->parent_name.is_empty())
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parse_interface(mixin_interface);
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if (!mixin_interface.parent_name.is_empty())
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report_parsing_error("Mixin interfaces are not allowed to have inherited parents", filename, input, offset);
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auto name = mixin_interface->name;
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interface.mixins.set(move(name), move(mixin_interface));
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auto name = mixin_interface.name;
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interface.mixins.set(move(name), &mixin_interface);
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}
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void Parser::parse_callback_function(HashMap<String, String>& extended_attributes, Interface& interface)
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@ -817,15 +820,18 @@ void resolve_function_typedefs(Interface& interface, FunctionType& function)
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resolve_parameters_typedefs(interface, function.parameters);
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}
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NonnullRefPtr<Interface> Parser::parse()
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Interface& Parser::parse()
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{
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auto this_module = Core::File::real_path_for(filename);
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auto interface = make_ref_counted<Interface>();
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interface->module_own_path = this_module;
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s_resolved_imports.set(this_module, interface);
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auto interface_ptr = make<Interface>();
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auto& interface = *interface_ptr;
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VERIFY(s_interfaces.set(move(interface_ptr)) == AK::HashSetResult::InsertedNewEntry);
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interface.module_own_path = this_module;
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s_resolved_imports.set(this_module, &interface);
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NonnullRefPtrVector<Interface> imports;
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Vector<Interface&> imports;
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HashTable<String> required_imported_paths;
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while (lexer.consume_specific("#import")) {
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consume_whitespace();
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assert_specific('<');
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@ -833,121 +839,121 @@ NonnullRefPtr<Interface> Parser::parse()
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lexer.ignore();
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auto maybe_interface = resolve_import(path);
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if (maybe_interface.has_value()) {
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for (auto& entry : maybe_interface.value()->required_imported_paths)
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for (auto& entry : maybe_interface.value().required_imported_paths)
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required_imported_paths.set(entry);
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imports.append(maybe_interface.release_value());
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}
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consume_whitespace();
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}
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interface->required_imported_paths = required_imported_paths;
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interface.required_imported_paths = required_imported_paths;
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parse_non_interface_entities(true, *interface);
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parse_non_interface_entities(true, interface);
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if (lexer.consume_specific("interface"))
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parse_interface(*interface);
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parse_interface(interface);
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parse_non_interface_entities(false, *interface);
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parse_non_interface_entities(false, interface);
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for (auto& import : imports) {
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// FIXME: Instead of copying every imported entity into the current interface, query imports directly
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for (auto& dictionary : import.dictionaries)
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interface->dictionaries.set(dictionary.key, dictionary.value);
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interface.dictionaries.set(dictionary.key, dictionary.value);
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for (auto& enumeration : import.enumerations) {
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auto enumeration_copy = enumeration.value;
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enumeration_copy.is_original_definition = false;
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interface->enumerations.set(enumeration.key, move(enumeration_copy));
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interface.enumerations.set(enumeration.key, move(enumeration_copy));
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}
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for (auto& typedef_ : import.typedefs)
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interface->typedefs.set(typedef_.key, typedef_.value);
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interface.typedefs.set(typedef_.key, typedef_.value);
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for (auto& mixin : import.mixins) {
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if (auto it = interface->mixins.find(mixin.key); it != interface->mixins.end() && it->value.ptr() != mixin.value.ptr())
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if (auto it = interface.mixins.find(mixin.key); it != interface.mixins.end() && it->value != mixin.value)
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report_parsing_error(String::formatted("Mixin '{}' was already defined in {}", mixin.key, mixin.value->module_own_path), filename, input, lexer.tell());
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interface->mixins.set(mixin.key, mixin.value);
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interface.mixins.set(mixin.key, mixin.value);
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}
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for (auto& callback_function : import.callback_functions)
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interface->callback_functions.set(callback_function.key, callback_function.value);
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interface.callback_functions.set(callback_function.key, callback_function.value);
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}
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// Resolve mixins
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if (auto it = interface->included_mixins.find(interface->name); it != interface->included_mixins.end()) {
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if (auto it = interface.included_mixins.find(interface.name); it != interface.included_mixins.end()) {
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for (auto& entry : it->value) {
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auto mixin_it = interface->mixins.find(entry);
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if (mixin_it == interface->mixins.end())
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auto mixin_it = interface.mixins.find(entry);
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if (mixin_it == interface.mixins.end())
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report_parsing_error(String::formatted("Mixin '{}' was never defined", entry), filename, input, lexer.tell());
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auto& mixin = mixin_it->value;
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interface->attributes.extend(mixin->attributes);
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interface->constants.extend(mixin->constants);
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interface->functions.extend(mixin->functions);
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interface->static_functions.extend(mixin->static_functions);
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if (interface->has_stringifier && mixin->has_stringifier)
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report_parsing_error(String::formatted("Both interface '{}' and mixin '{}' have defined stringifier attributes", interface->name, mixin->name), filename, input, lexer.tell());
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interface.attributes.extend(mixin->attributes);
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interface.constants.extend(mixin->constants);
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interface.functions.extend(mixin->functions);
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interface.static_functions.extend(mixin->static_functions);
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if (interface.has_stringifier && mixin->has_stringifier)
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report_parsing_error(String::formatted("Both interface '{}' and mixin '{}' have defined stringifier attributes", interface.name, mixin->name), filename, input, lexer.tell());
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if (mixin->has_stringifier) {
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interface->stringifier_attribute = mixin->stringifier_attribute;
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interface->has_stringifier = true;
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interface.stringifier_attribute = mixin->stringifier_attribute;
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interface.has_stringifier = true;
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}
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}
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}
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// Resolve typedefs
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for (auto& attribute : interface->attributes)
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resolve_typedef(*interface, attribute.type, &attribute.extended_attributes);
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for (auto& constant : interface->constants)
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resolve_typedef(*interface, constant.type);
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for (auto& constructor : interface->constructors)
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resolve_parameters_typedefs(*interface, constructor.parameters);
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for (auto& function : interface->functions)
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resolve_function_typedefs(*interface, function);
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for (auto& static_function : interface->static_functions)
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resolve_function_typedefs(*interface, static_function);
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if (interface->value_iterator_type.has_value())
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resolve_typedef(*interface, *interface->value_iterator_type);
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if (interface->pair_iterator_types.has_value()) {
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resolve_typedef(*interface, interface->pair_iterator_types->get<0>());
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resolve_typedef(*interface, interface->pair_iterator_types->get<1>());
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for (auto& attribute : interface.attributes)
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resolve_typedef(interface, attribute.type, &attribute.extended_attributes);
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for (auto& constant : interface.constants)
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resolve_typedef(interface, constant.type);
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for (auto& constructor : interface.constructors)
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resolve_parameters_typedefs(interface, constructor.parameters);
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for (auto& function : interface.functions)
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resolve_function_typedefs(interface, function);
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for (auto& static_function : interface.static_functions)
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resolve_function_typedefs(interface, static_function);
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if (interface.value_iterator_type.has_value())
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resolve_typedef(interface, *interface.value_iterator_type);
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if (interface.pair_iterator_types.has_value()) {
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resolve_typedef(interface, interface.pair_iterator_types->get<0>());
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resolve_typedef(interface, interface.pair_iterator_types->get<1>());
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}
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if (interface->named_property_getter.has_value())
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resolve_function_typedefs(*interface, *interface->named_property_getter);
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if (interface->named_property_setter.has_value())
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resolve_function_typedefs(*interface, *interface->named_property_setter);
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if (interface->indexed_property_getter.has_value())
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resolve_function_typedefs(*interface, *interface->indexed_property_getter);
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if (interface->indexed_property_setter.has_value())
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resolve_function_typedefs(*interface, *interface->indexed_property_setter);
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if (interface->named_property_deleter.has_value())
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resolve_function_typedefs(*interface, *interface->named_property_deleter);
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if (interface->named_property_getter.has_value())
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resolve_function_typedefs(*interface, *interface->named_property_getter);
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for (auto& dictionary : interface->dictionaries) {
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if (interface.named_property_getter.has_value())
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resolve_function_typedefs(interface, *interface.named_property_getter);
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if (interface.named_property_setter.has_value())
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resolve_function_typedefs(interface, *interface.named_property_setter);
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if (interface.indexed_property_getter.has_value())
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resolve_function_typedefs(interface, *interface.indexed_property_getter);
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if (interface.indexed_property_setter.has_value())
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resolve_function_typedefs(interface, *interface.indexed_property_setter);
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if (interface.named_property_deleter.has_value())
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resolve_function_typedefs(interface, *interface.named_property_deleter);
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if (interface.named_property_getter.has_value())
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resolve_function_typedefs(interface, *interface.named_property_getter);
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for (auto& dictionary : interface.dictionaries) {
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for (auto& dictionary_member : dictionary.value.members)
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resolve_typedef(*interface, dictionary_member.type, &dictionary_member.extended_attributes);
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resolve_typedef(interface, dictionary_member.type, &dictionary_member.extended_attributes);
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}
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for (auto& callback_function : interface->callback_functions)
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resolve_function_typedefs(*interface, callback_function.value);
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for (auto& callback_function : interface.callback_functions)
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resolve_function_typedefs(interface, callback_function.value);
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// Create overload sets
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for (auto& function : interface->functions) {
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auto& overload_set = interface->overload_sets.ensure(function.name);
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for (auto& function : interface.functions) {
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auto& overload_set = interface.overload_sets.ensure(function.name);
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function.overload_index = overload_set.size();
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overload_set.append(function);
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}
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for (auto& overload_set : interface->overload_sets) {
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for (auto& overload_set : interface.overload_sets) {
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if (overload_set.value.size() == 1)
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continue;
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for (auto& overloaded_function : overload_set.value)
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overloaded_function.is_overloaded = true;
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}
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for (auto& function : interface->static_functions) {
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auto& overload_set = interface->static_overload_sets.ensure(function.name);
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for (auto& function : interface.static_functions) {
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auto& overload_set = interface.static_overload_sets.ensure(function.name);
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function.overload_index = overload_set.size();
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overload_set.append(function);
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}
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for (auto& overload_set : interface->static_overload_sets) {
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for (auto& overload_set : interface.static_overload_sets) {
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if (overload_set.value.size() == 1)
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continue;
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for (auto& overloaded_function : overload_set.value)
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@ -955,9 +961,9 @@ NonnullRefPtr<Interface> Parser::parse()
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}
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// FIXME: Add support for overloading constructors
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if (interface->will_generate_code())
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interface->required_imported_paths.set(this_module);
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interface->imported_modules = move(imports);
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if (interface.will_generate_code())
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interface.required_imported_paths.set(this_module);
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interface.imported_modules = move(imports);
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return interface;
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}
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@ -18,7 +18,7 @@ namespace IDL {
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class Parser {
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public:
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Parser(String filename, StringView contents, String import_base_path);
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NonnullRefPtr<Interface> parse();
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Interface& parse();
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private:
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// https://webidl.spec.whatwg.org/#dfn-special-operation
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@ -31,7 +31,7 @@ private:
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void assert_specific(char ch);
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void assert_string(StringView expected);
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void consume_whitespace();
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Optional<NonnullRefPtr<Interface>> resolve_import(auto path);
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Optional<Interface&> resolve_import(auto path);
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HashMap<String, String> parse_extended_attributes();
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void parse_attribute(HashMap<String, String>& extended_attributes, Interface&);
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@ -53,8 +53,9 @@ private:
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NonnullRefPtr<Type> parse_type();
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void parse_constant(Interface&);
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static HashMap<String, NonnullRefPtr<Interface>> s_resolved_imports;
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HashTable<String> required_imported_paths;
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static HashTable<NonnullOwnPtr<Interface>> s_interfaces;
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static HashMap<String, Interface*> s_resolved_imports;
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String import_base_path;
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String filename;
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StringView input;
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@ -141,7 +141,7 @@ struct CallbackFunction {
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bool is_legacy_treat_non_object_as_null { false };
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};
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struct Interface;
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class Interface;
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struct ParameterizedType : public Type {
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ParameterizedType() = default;
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@ -167,7 +167,13 @@ static inline size_t get_shortest_function_length(Vector<Function&> const& overl
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return longest_length;
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}
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struct Interface : public RefCounted<Interface> {
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class Interface {
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AK_MAKE_NONCOPYABLE(Interface);
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AK_MAKE_NONMOVABLE(Interface);
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public:
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explicit Interface() = default;
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String name;
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String parent_name;
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@ -198,7 +204,7 @@ struct Interface : public RefCounted<Interface> {
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HashMap<String, Dictionary> dictionaries;
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HashMap<String, Enumeration> enumerations;
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HashMap<String, Typedef> typedefs;
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HashMap<String, NonnullRefPtr<Interface>> mixins;
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HashMap<String, Interface*> mixins;
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HashMap<String, CallbackFunction> callback_functions;
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// Added for convenience after parsing
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@ -212,7 +218,7 @@ struct Interface : public RefCounted<Interface> {
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String module_own_path;
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HashTable<String> required_imported_paths;
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NonnullRefPtrVector<Interface> imported_modules;
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Vector<Interface&> imported_modules;
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HashMap<String, Vector<Function&>> overload_sets;
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HashMap<String, Vector<Function&>> static_overload_sets;
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@ -83,21 +83,21 @@ int main(int argc, char** argv)
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if (import_base_path.is_null())
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import_base_path = lexical_path.dirname();
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auto interface = IDL::Parser(path, data, import_base_path).parse();
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auto& interface = IDL::Parser(path, data, import_base_path).parse();
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if (namespace_.is_one_of("Crypto", "CSS", "DOM", "Encoding", "HTML", "UIEvents", "Geometry", "HighResolutionTime", "IntersectionObserver", "NavigationTiming", "RequestIdleCallback", "ResizeObserver", "SVG", "Selection", "URL", "WebSockets", "XHR")) {
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StringBuilder builder;
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builder.append(namespace_);
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builder.append("::");
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builder.append(interface->name);
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interface->fully_qualified_name = builder.to_string();
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builder.append(interface.name);
|
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interface.fully_qualified_name = builder.to_string();
|
||||
} else {
|
||||
interface->fully_qualified_name = interface->name;
|
||||
interface.fully_qualified_name = interface.name;
|
||||
}
|
||||
|
||||
if constexpr (WRAPPER_GENERATOR_DEBUG) {
|
||||
dbgln("Attributes:");
|
||||
for (auto& attribute : interface->attributes) {
|
||||
for (auto& attribute : interface.attributes) {
|
||||
dbgln(" {}{}{} {}",
|
||||
attribute.readonly ? "readonly " : "",
|
||||
attribute.type->name,
|
||||
|
|
@ -106,7 +106,7 @@ int main(int argc, char** argv)
|
|||
}
|
||||
|
||||
dbgln("Functions:");
|
||||
for (auto& function : interface->functions) {
|
||||
for (auto& function : interface.functions) {
|
||||
dbgln(" {}{} {}",
|
||||
function.return_type->name,
|
||||
function.return_type->nullable ? "?" : "",
|
||||
|
|
@ -120,7 +120,7 @@ int main(int argc, char** argv)
|
|||
}
|
||||
|
||||
dbgln("Static Functions:");
|
||||
for (auto& function : interface->static_functions) {
|
||||
for (auto& function : interface.static_functions) {
|
||||
dbgln(" static {}{} {}",
|
||||
function.return_type->name,
|
||||
function.return_type->nullable ? "?" : "",
|
||||
|
|
@ -135,34 +135,34 @@ int main(int argc, char** argv)
|
|||
}
|
||||
|
||||
if (header_mode)
|
||||
IDL::generate_header(*interface);
|
||||
IDL::generate_header(interface);
|
||||
|
||||
if (implementation_mode)
|
||||
IDL::generate_implementation(*interface);
|
||||
IDL::generate_implementation(interface);
|
||||
|
||||
if (constructor_header_mode)
|
||||
IDL::generate_constructor_header(*interface);
|
||||
IDL::generate_constructor_header(interface);
|
||||
|
||||
if (constructor_implementation_mode)
|
||||
IDL::generate_constructor_implementation(*interface);
|
||||
IDL::generate_constructor_implementation(interface);
|
||||
|
||||
if (prototype_header_mode)
|
||||
IDL::generate_prototype_header(*interface);
|
||||
IDL::generate_prototype_header(interface);
|
||||
|
||||
if (prototype_implementation_mode)
|
||||
IDL::generate_prototype_implementation(*interface);
|
||||
IDL::generate_prototype_implementation(interface);
|
||||
|
||||
if (iterator_header_mode)
|
||||
IDL::generate_iterator_header(*interface);
|
||||
IDL::generate_iterator_header(interface);
|
||||
|
||||
if (iterator_implementation_mode)
|
||||
IDL::generate_iterator_implementation(*interface);
|
||||
IDL::generate_iterator_implementation(interface);
|
||||
|
||||
if (iterator_prototype_header_mode)
|
||||
IDL::generate_iterator_prototype_header(*interface);
|
||||
IDL::generate_iterator_prototype_header(interface);
|
||||
|
||||
if (iterator_prototype_implementation_mode)
|
||||
IDL::generate_iterator_prototype_implementation(*interface);
|
||||
IDL::generate_iterator_prototype_implementation(interface);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue