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LibWeb: Add support for optional default values and optional bools in IDL

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Fixed the DOMException constructor as it had the default value version
commented out.
This commit is contained in:
Luke 2021-04-10 19:28:07 +01:00 • committed by Andreas Kling
parent ad4a4ba1c6
commit 8da14bf880
2 changed files with 58 additions and 10 deletions
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64
Userland/Libraries/LibWeb/CodeGenerators/WrapperGenerator.cpp
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@ -109,6 +109,7 @@ struct Parameter {
Type type;
String name;
bool optional { false };
String optional_default_value {};
};
struct Function {
@ -291,8 +292,20 @@ static OwnPtr<Interface> parse_interface(StringView filename, const StringView&
consume_whitespace();
auto type = parse_type();
consume_whitespace();
auto name = lexer.consume_until([](auto ch) { return isspace(ch) || ch == ',' || ch == ')'; });
parameters.append({ move(type), move(name), optional });
auto name = lexer.consume_until([](auto ch) { return isspace(ch) || ch == ',' || ch == ')' || ch == '='; });
Parameter parameter = { move(type), move(name), optional };
consume_whitespace();
if (lexer.next_is(')')) {
parameters.append(parameter);
break;
}
if (lexer.next_is('=') && optional) {
assert_specific('=');
consume_whitespace();
auto default_value = lexer.consume_until([](auto ch) { return isspace(ch) || ch == ',' || ch == ')'; });
parameter.optional_default_value = default_value;
}
parameters.append(parameter);
if (lexer.next_is(')'))
break;
assert_specific(',');
@ -508,7 +521,7 @@ static bool is_wrappable_type(const IDL::Type& type)
}
template<typename ParameterType>
static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter, const String& js_name, const String& js_suffix, const String& cpp_name, bool return_void = false, bool legacy_null_to_empty_string = false, bool optional = false)
static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter, const String& js_name, const String& js_suffix, const String& cpp_name, bool return_void = false, bool legacy_null_to_empty_string = false, bool optional = false, String optional_default_value = {})
{
auto scoped_generator = generator.fork();
scoped_generator.set("cpp_name", make_input_acceptable_cpp(cpp_name));
@ -517,12 +530,15 @@ static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter
scoped_generator.set("legacy_null_to_empty_string", legacy_null_to_empty_string ? "true" : "false");
scoped_generator.set("parameter.type.name", parameter.type.name);
if (!optional_default_value.is_null())
scoped_generator.set("parameter.optional_default_value", optional_default_value);
if (return_void)
scoped_generator.set("return_statement", "return;");
else
scoped_generator.set("return_statement", "return {};");
// FIXME: Add support for optional and nullable to all types
// FIXME: Add support for optional, nullable and default values to all types
if (parameter.type.is_string()) {
if (!optional) {
scoped_generator.append(R"~~~(
@ -537,8 +553,16 @@ static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter
@cpp_name@ = @js_name@@js_suffix@.to_string(global_object, @legacy_null_to_empty_string@);
if (vm.exception())
@return_statement@
})~~~");
if (!optional_default_value.is_null()) {
scoped_generator.append(R"~~~( else {
@cpp_name@ = @parameter.optional_default_value@;
}
)~~~");
} else {
scoped_generator.append(R"~~~(
)~~~");
}
}
} else if (parameter.type.name == "EventListener") {
if (parameter.type.nullable) {
@ -581,9 +605,35 @@ static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter
@return_statement@
)~~~");
} else if (parameter.type.name == "boolean") {
scoped_generator.append(R"~~~(
auto @cpp_name@ = @js_name@@js_suffix@.to_boolean();
if (!optional) {
scoped_generator.append(R"~~~(
bool @cpp_name@ = @js_name@@js_suffix@.to_boolean();
)~~~");
} else {
if (!optional_default_value.is_null()) {
scoped_generator.append(R"~~~(
bool @cpp_name@;
)~~~");
} else {
if (!optional_default_value.is_null()) {
scoped_generator.append(R"~~~(
Optional<bool> @cpp_name@;
)~~~");
}
}
scoped_generator.append(R"~~~(
if (!@js_name@@js_suffix@.is_undefined())
@cpp_name@ = @js_name@@js_suffix@.to_boolean();)~~~");
if (!optional_default_value.is_null()) {
scoped_generator.append(R"~~~(
else
@cpp_name@ = @parameter.optional_default_value@;
)~~~");
} else {
scoped_generator.append(R"~~~(
)~~~");
}
}
} else if (parameter.type.name == "unsigned long") {
scoped_generator.append(R"~~~(
auto @cpp_name@ = @js_name@@js_suffix@.to_u32(global_object);
@ -647,7 +697,7 @@ static void generate_arguments(SourceGenerator& generator, const Vector<IDL::Par
auto arg@argument.index@ = vm.argument(@argument.index@);
)~~~");
// FIXME: Parameters can have [LegacyNullToEmptyString] attached.
generate_to_cpp(generator, parameter, "arg", String::number(argument_index), parameter.name.to_snakecase(), return_void, false, parameter.optional);
generate_to_cpp(generator, parameter, "arg", String::number(argument_index), parameter.name.to_snakecase(), return_void, false, parameter.optional, parameter.optional_default_value);
++argument_index;
}