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/*
* Copyright (C) 2025 Samuel Weinig <sam@webkit.org>
*
* 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 APPLE INC. ``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 APPLE INC. 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.
*/
#pragma once
#include <WebCore/StyleValueTypes.h>
#include <WebCore/TextFlags.h>
namespace WebCore {
namespace Style {
// <'font-variant-east-asian'> = normal | [ <east-asian-variant-values> || <east-asian-width-values> || ruby ]
// https://drafts.csswg.org/css-fonts-4/#propdef-font-variant-east-asian
struct FontVariantEastAsian {
using Platform = WebCore::FontVariantEastAsianValues;
constexpr FontVariantEastAsian(CSS::Keyword::Normal)
: m_platform { }
{
}
constexpr FontVariantEastAsian(Platform value)
: m_platform { value }
{
}
constexpr Platform platform() const { return m_platform; }
constexpr bool isNormal() const
{
return m_platform.variant == FontVariantEastAsianVariant::Normal
&& m_platform.width == FontVariantEastAsianWidth::Normal
&& m_platform.ruby == FontVariantEastAsianRuby::Normal;
}
template<typename... F> decltype(auto) switchOn(F&&... f) const
{
auto visitor = WTF::makeVisitor(std::forward<F>(f)...);
if (isNormal())
return visitor(CSS::Keyword::Normal { });
auto variantValue = [](auto value) -> std::optional<Variant<CSS::Keyword::Jis78, CSS::Keyword::Jis83, CSS::Keyword::Jis90, CSS::Keyword::Jis04, CSS::Keyword::Simplified, CSS::Keyword::Traditional>> {
switch (value) {
case FontVariantEastAsianVariant::Normal: return std::nullopt;
case FontVariantEastAsianVariant::Jis78: return CSS::Keyword::Jis78 { };
case FontVariantEastAsianVariant::Jis83: return CSS::Keyword::Jis83 { };
case FontVariantEastAsianVariant::Jis90: return CSS::Keyword::Jis90 { };
case FontVariantEastAsianVariant::Jis04: return CSS::Keyword::Jis04 { };
case FontVariantEastAsianVariant::Simplified: return CSS::Keyword::Simplified { };
case FontVariantEastAsianVariant::Traditional: return CSS::Keyword::Traditional { };
}
RELEASE_ASSERT_NOT_REACHED();
};
auto widthValue = [](auto value) -> std::optional<Variant<CSS::Keyword::FullWidth, CSS::Keyword::ProportionalWidth>> {
switch (value) {
case FontVariantEastAsianWidth::Normal: return std::nullopt;
case FontVariantEastAsianWidth::Full: return CSS::Keyword::FullWidth { };
case FontVariantEastAsianWidth::Proportional: return CSS::Keyword::ProportionalWidth { };
}
RELEASE_ASSERT_NOT_REACHED();
};
auto rubyValue = [](auto value) -> std::optional<CSS::Keyword::Ruby> {
switch (value) {
case FontVariantEastAsianRuby::Normal: return std::nullopt;
case FontVariantEastAsianRuby::Yes: return CSS::Keyword::Ruby { };
}
RELEASE_ASSERT_NOT_REACHED();
};
return visitor(SpaceSeparatedTuple {
variantValue(m_platform.variant),
widthValue(m_platform.width),
rubyValue(m_platform.ruby),
});
}
constexpr bool operator==(const FontVariantEastAsian&) const = default;
private:
Platform m_platform;
};
// MARK: - Conversion
template<> struct CSSValueConversion<FontVariantEastAsian> { auto operator()(BuilderState&, const CSSValue&) -> FontVariantEastAsian; };
} // namespace Style
} // namespace WebCore
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::FontVariantEastAsian)
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