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/*
* Copyright (C) 2024 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,
* 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 "CSSPrimitiveNumericTypes.h"
namespace WebCore {
namespace CSS {
// <steps-easing-function> = steps( <integer>, <steps-easing-function-position>? )
// <steps-easing-function-position> = jump-start | jump-end | jump-none | jump-both | start | end
//
// with range constraints, this is:
//
// <steps-easing-function> = steps( <integer [1,∞]>, jump-start )
// | steps( <integer [1,∞]>, jump-end )
// | steps( <integer [1,∞]>, jump-both )
// | steps( <integer [1,∞]>, start )
// | steps( <integer [1,∞]>, end )
// | steps( <integer [2,∞]>, jump-none )
// https://drafts.csswg.org/css-easing-2/#funcdef-steps
struct StepsEasingParameters {
enum class ShouldSerializeKeyword : bool { No, Yes };
template<typename T, typename Keyword, auto shouldSerializeKeyword = ShouldSerializeKeyword::Yes>
struct Kind {
static constexpr Keyword keyword = Keyword { };
T steps;
bool operator==(const Kind&) const = default;
};
using JumpStart = Kind<Integer<Range{1,Range::infinity}>, Keyword::JumpStart>;
using JumpEnd = Kind<Integer<Range{1,Range::infinity}>, Keyword::JumpEnd, ShouldSerializeKeyword::No>;
using JumpBoth = Kind<Integer<Range{1,Range::infinity}>, Keyword::JumpBoth>;
using Start = Kind<Integer<Range{1,Range::infinity}>, Keyword::Start>;
using End = Kind<Integer<Range{1,Range::infinity}>, Keyword::End, ShouldSerializeKeyword::No>;
using JumpNone = Kind<Integer<Range{2,Range::infinity}>, Keyword::JumpNone>;
std::variant<
JumpStart,
JumpEnd,
JumpBoth,
Start,
End,
JumpNone
> value;
bool operator==(const StepsEasingParameters&) const = default;
};
using StepsEasingFunction = FunctionNotation<CSSValueSteps, StepsEasingParameters>;
DEFINE_TYPE_WRAPPER_GET(StepsEasingParameters, value);
template<size_t I, typename T, typename K, auto shouldSerializeKeyword> const auto& get(const StepsEasingParameters::Kind<T, K, shouldSerializeKeyword>& value)
{
return value.steps;
}
template<typename T, typename K, auto shouldSerializeKeyword> struct Serialize<StepsEasingParameters::Kind<T, K, shouldSerializeKeyword>> {
void operator()(StringBuilder& builder, const SerializationContext& context, const StepsEasingParameters::Kind<T, K, shouldSerializeKeyword>& value)
{
serializationForCSS(builder, context, value.steps);
if constexpr (shouldSerializeKeyword == StepsEasingParameters::ShouldSerializeKeyword::Yes) {
builder.append(", "_s);
serializationForCSS(builder, context, value.keyword);
}
}
};
} // namespace CSS
} // namespace WebCore
DEFINE_TUPLE_LIKE_CONFORMANCE(WebCore::CSS::StepsEasingParameters, 1)
namespace std {
template<typename T, typename K, auto shouldSerializeKeyword> class tuple_size<WebCore::CSS::StepsEasingParameters::Kind<T, K, shouldSerializeKeyword>> : public std::integral_constant<size_t, 1> { };
template<size_t I, typename T, typename K, auto shouldSerializeKeyword> class tuple_element<I, WebCore::CSS::StepsEasingParameters::Kind<T, K, shouldSerializeKeyword>> {
public:
using type = T;
};
}
template<typename T, typename K, auto shouldSerializeKeyword> inline constexpr bool WebCore::TreatAsTupleLike<WebCore::CSS::StepsEasingParameters::Kind<T, K, shouldSerializeKeyword>> = true;
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