ladybird/Userland/Libraries/LibWeb/CodeGenerators/Generate_CSS_ValueID_cpp.cpp

/*
 * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <AK/ByteBuffer.h>
#include <AK/JsonObject.h>
#include <AK/SourceGenerator.h>
#include <AK/StringBuilder.h>
#include <LibCore/File.h>
#include <ctype.h>
#include <stdio.h>

static String title_casify(const String& dashy_name)
{
    auto parts = dashy_name.split('-');
    StringBuilder builder;
    for (auto& part : parts) {
        if (part.is_empty())
            continue;
        builder.append(toupper(part[0]));
        if (part.length() == 1)
            continue;
        builder.append(part.substring_view(1, part.length() - 1));
    }
    return builder.to_string();
}

int main(int argc, char** argv)
{
    if (argc != 2) {
        warnln("usage: {} <path/to/CSS/Identifiers.json>", argv[0]);
        return 1;
    }
    auto file = Core::File::construct(argv[1]);
    if (!file->open(Core::IODevice::ReadOnly))
        return 1;

    auto json = JsonValue::from_string(file->read_all());
    VERIFY(json.has_value());
    VERIFY(json.value().is_array());

    StringBuilder builder;
    SourceGenerator generator { builder };

    generator.append(R"~~~(
#include <AK/Assertions.h>
#include <LibWeb/CSS/ValueID.h>

namespace Web::CSS {

ValueID value_id_from_string(const StringView& string)
{
)~~~");

    json.value().as_array().for_each([&](auto& name) {
        auto member_generator = generator.fork();
        member_generator.set("name", name.to_string());
        member_generator.set("name:titlecase", title_casify(name.to_string()));
        member_generator.append(R"~~~(
    if (string.equals_ignoring_case("@name@"))
        return ValueID::@name:titlecase@;
)~~~");
    });

    generator.append(R"~~~(
    return ValueID::Invalid;
}

const char* string_from_value_id(ValueID value_id) {
    switch (value_id) {
)~~~");

    json.value().as_array().for_each([&](auto& name) {
        auto member_generator = generator.fork();
        member_generator.set("name", name.to_string());
        member_generator.set("name:titlecase", title_casify(name.to_string()));
        member_generator.append(R"~~~(
    case ValueID::@name:titlecase@:
        return "@name@";
        )~~~");
    });

    generator.append(R"~~~(
    default:
        return "(invalid CSS::ValueID)";
    }
}

} // namespace Web::CSS
)~~~");

    outln("{}", generator.as_string_view());
}