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Meta+LibWeb: Port MediaFeatureID.h/cpp generators to invoke_generator()
This commit is contained in:
Sam Atkins
Tim Flynn
parent
59080f441e
commit
cb406e79f4
4 changed files with 88 additions and 104 deletions
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/*
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* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "GeneratorUtil.h"
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#include <AK/SourceGenerator.h>
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#include <AK/StringBuilder.h>
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#include <LibCore/ArgsParser.h>
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#include <LibMain/Main.h>
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ErrorOr<void> generate_header_file(JsonObject& media_feature_data, Core::Stream::File& file);
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ErrorOr<void> generate_implementation_file(JsonObject& media_feature_data, Core::Stream::File& file);
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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StringView generated_header_path;
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StringView generated_implementation_path;
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StringView media_features_json_path;
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Core::ArgsParser args_parser;
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args_parser.add_option(generated_header_path, "Path to the MediaFeatureID header file to generate", "generated-header-path", 'h', "generated-header-path");
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args_parser.add_option(generated_implementation_path, "Path to the MediaFeatureID implementation file to generate", "generated-implementation-path", 'c', "generated-implementation-path");
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args_parser.add_option(media_features_json_path, "Path to the JSON file to read from", "json-path", 'j', "json-path");
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args_parser.parse(arguments);
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auto json = TRY(read_entire_file_as_json(media_features_json_path));
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VERIFY(json.is_object());
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auto media_feature_data = json.as_object();
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auto generated_header_file = TRY(Core::Stream::File::open(generated_header_path, Core::Stream::OpenMode::Write));
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auto generated_implementation_file = TRY(Core::Stream::File::open(generated_implementation_path, Core::Stream::OpenMode::Write));
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TRY(generate_header_file(media_feature_data, *generated_header_file));
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TRY(generate_implementation_file(media_feature_data, *generated_implementation_file));
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return 0;
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}
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ErrorOr<void> generate_header_file(JsonObject& media_feature_data, Core::Stream::File& file)
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{
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StringBuilder builder;
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SourceGenerator generator { builder };
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generator.append(R"~~~(#pragma once
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#include <AK/StringView.h>
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#include <AK/Traits.h>
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#include <LibWeb/CSS/ValueID.h>
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namespace Web::CSS {
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enum class MediaFeatureValueType {
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Boolean,
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Integer,
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Length,
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Ratio,
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Resolution,
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};
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enum class MediaFeatureID {)~~~");
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media_feature_data.for_each_member([&](auto& name, auto&) {
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auto member_generator = generator.fork();
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member_generator.set("name:titlecase", title_casify(name));
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member_generator.append(R"~~~(
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@name:titlecase@,)~~~");
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});
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generator.append(R"~~~(
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};
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Optional<MediaFeatureID> media_feature_id_from_string(StringView);
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char const* string_from_media_feature_id(MediaFeatureID);
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bool media_feature_type_is_range(MediaFeatureID);
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bool media_feature_accepts_type(MediaFeatureID, MediaFeatureValueType);
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bool media_feature_accepts_identifier(MediaFeatureID, ValueID);
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}
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)~~~");
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TRY(file.write(generator.as_string_view().bytes()));
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return {};
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}
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ErrorOr<void> generate_implementation_file(JsonObject& media_feature_data, Core::Stream::File& file)
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{
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StringBuilder builder;
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SourceGenerator generator { builder };
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generator.append(R"~~~(#include <LibWeb/CSS/MediaFeatureID.h>
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namespace Web::CSS {
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Optional<MediaFeatureID> media_feature_id_from_string(StringView string)
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{)~~~");
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media_feature_data.for_each_member([&](auto& name, auto&) {
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auto member_generator = generator.fork();
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member_generator.set("name", name);
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member_generator.set("name:titlecase", title_casify(name));
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member_generator.append(R"~~~(
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if (string.equals_ignoring_case("@name@"sv))
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return MediaFeatureID::@name:titlecase@;
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)~~~");
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});
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generator.append(R"~~~(
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return {};
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}
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char const* string_from_media_feature_id(MediaFeatureID media_feature_id)
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{
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switch (media_feature_id) {)~~~");
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media_feature_data.for_each_member([&](auto& name, auto&) {
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auto member_generator = generator.fork();
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member_generator.set("name", name);
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member_generator.set("name:titlecase", title_casify(name));
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member_generator.append(R"~~~(
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case MediaFeatureID::@name:titlecase@:
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return "@name@";)~~~");
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});
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generator.append(R"~~~(
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}
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VERIFY_NOT_REACHED();
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}
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bool media_feature_type_is_range(MediaFeatureID media_feature_id)
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{
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switch (media_feature_id) {)~~~");
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media_feature_data.for_each_member([&](auto& name, auto& value) {
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VERIFY(value.is_object());
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auto& feature = value.as_object();
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auto member_generator = generator.fork();
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member_generator.set("name:titlecase", title_casify(name));
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VERIFY(feature.has("type"));
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auto feature_type = feature.get("type");
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VERIFY(feature_type.is_string());
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member_generator.set("is_range", feature_type.as_string() == "range" ? "true" : "false");
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member_generator.append(R"~~~(
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case MediaFeatureID::@name:titlecase@:
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return @is_range@;)~~~");
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});
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generator.append(R"~~~(
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}
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VERIFY_NOT_REACHED();
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}
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bool media_feature_accepts_type(MediaFeatureID media_feature_id, MediaFeatureValueType value_type)
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{
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switch (media_feature_id) {)~~~");
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media_feature_data.for_each_member([&](auto& name, auto& member) {
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VERIFY(member.is_object());
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auto& feature = member.as_object();
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auto member_generator = generator.fork();
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member_generator.set("name:titlecase", title_casify(name));
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member_generator.append(R"~~~(
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case MediaFeatureID::@name:titlecase@:)~~~");
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bool have_output_value_type_switch = false;
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if (feature.has("values")) {
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auto append_value_type_switch_if_needed = [&]() {
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if (!have_output_value_type_switch) {
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member_generator.append(R"~~~(
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switch (value_type) {)~~~");
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}
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have_output_value_type_switch = true;
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};
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auto& values = feature.get("values");
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VERIFY(values.is_array());
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auto& values_array = values.as_array();
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for (auto& type : values_array.values()) {
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VERIFY(type.is_string());
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auto type_name = type.as_string();
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// Skip identifiers.
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if (type_name[0] != '<')
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continue;
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if (type_name == "<mq-boolean>") {
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append_value_type_switch_if_needed();
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member_generator.append(R"~~~(
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case MediaFeatureValueType::Boolean:
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return true;)~~~");
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} else if (type_name == "<integer>") {
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append_value_type_switch_if_needed();
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member_generator.append(R"~~~(
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case MediaFeatureValueType::Integer:
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return true;)~~~");
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} else if (type_name == "<length>") {
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append_value_type_switch_if_needed();
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member_generator.append(R"~~~(
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case MediaFeatureValueType::Length:
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return true;)~~~");
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} else if (type_name == "<ratio>") {
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append_value_type_switch_if_needed();
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member_generator.append(R"~~~(
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case MediaFeatureValueType::Ratio:
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return true;)~~~");
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} else if (type_name == "<resolution>") {
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append_value_type_switch_if_needed();
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member_generator.append(R"~~~(
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case MediaFeatureValueType::Resolution:
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return true;)~~~");
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} else {
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warnln("Unrecognized media-feature value type: `{}`", type_name);
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VERIFY_NOT_REACHED();
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}
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}
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}
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if (have_output_value_type_switch) {
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member_generator.append(R"~~~(
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default:
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return false;
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})~~~");
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} else {
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member_generator.append(R"~~~(
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return false;)~~~");
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}
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});
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generator.append(R"~~~(
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}
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VERIFY_NOT_REACHED();
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}
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bool media_feature_accepts_identifier(MediaFeatureID media_feature_id, ValueID identifier)
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{
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switch (media_feature_id) {)~~~");
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media_feature_data.for_each_member([&](auto& name, auto& member) {
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VERIFY(member.is_object());
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auto& feature = member.as_object();
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auto member_generator = generator.fork();
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member_generator.set("name:titlecase", title_casify(name));
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member_generator.append(R"~~~(
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case MediaFeatureID::@name:titlecase@:)~~~");
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bool have_output_identifier_switch = false;
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if (feature.has("values")) {
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auto append_identifier_switch_if_needed = [&]() {
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if (!have_output_identifier_switch) {
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member_generator.append(R"~~~(
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switch (identifier) {)~~~");
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}
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have_output_identifier_switch = true;
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};
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auto& values = feature.get("values");
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VERIFY(values.is_array());
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auto& values_array = values.as_array();
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for (auto& identifier : values_array.values()) {
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VERIFY(identifier.is_string());
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auto identifier_name = identifier.as_string();
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// Skip types.
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if (identifier_name[0] == '<')
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continue;
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append_identifier_switch_if_needed();
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auto ident_generator = member_generator.fork();
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ident_generator.set("identifier:titlecase", title_casify(identifier_name));
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ident_generator.append(R"~~~(
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case ValueID::@identifier:titlecase@:
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return true;)~~~");
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}
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}
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if (have_output_identifier_switch) {
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member_generator.append(R"~~~(
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default:
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return false;
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})~~~");
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} else {
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member_generator.append(R"~~~(
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return false;)~~~");
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}
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});
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generator.append(R"~~~(
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}
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VERIFY_NOT_REACHED();
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}
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}
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)~~~");
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TRY(file.write(generator.as_string_view().bytes()));
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return {};
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}
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