1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/*
* 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,
* 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 "CSSPrimitiveNumericOrKeyword.h"
#include "StylePrimitiveNumeric.h"
#include <algorithm>
#include <wtf/CompactVariant.h>
#include <wtf/FlatteningVariantAdaptor.h>
namespace WebCore {
namespace Style {
template<Numeric N, CSS::PrimitiveKeyword... Ks> class PrimitiveNumericOrKeyword {
public:
using CSS = typename N::CSS;
using Raw = typename N::Raw;
using Calc = typename N::Calc;
using Dimension = typename N::Dimension;
using Keywords = WebCore::CSS::PrimitiveKeywordList<Ks...>;
using Representation = FlatteningCompactVariant<N, Ks...>;
template<typename U>
requires std::same_as<std::remove_cvref_t<U>, N>
PrimitiveNumericOrKeyword(U&& value) : m_value { std::forward<U>(value) } { }
PrimitiveNumericOrKeyword(WebCore::CSS::ValidKeywordForList<Keywords> auto keyword) : m_value { keyword } { }
// "Variant-Like" operators.
template<typename> constexpr bool holdsAlternative() const;
template<typename... F> constexpr decltype(auto) switchOn(F&&...) const;
constexpr bool isZero() const;
bool operator==(const PrimitiveNumericOrKeyword&) const = default;
private:
Representation m_value;
};
template<Numeric N, CSS::PrimitiveKeyword... Ks>
template<typename U>
constexpr bool PrimitiveNumericOrKeyword<N, Ks...>::holdsAlternative() const
{
return WTF::holdsAlternative<U>(m_value);
}
template<Numeric N, CSS::PrimitiveKeyword... Ks>
template<typename... F>
constexpr decltype(auto) PrimitiveNumericOrKeyword<N, Ks...>::switchOn(F&&... functors) const
{
return WTF::switchOn(m_value, std::forward<F>(functors)...);
}
template<Numeric N, CSS::PrimitiveKeyword... Ks>
constexpr bool PrimitiveNumericOrKeyword<N, Ks...>::isZero() const
{
return switchOn(
[]<HasIsZero U>(const U& value) { return value.isZero(); },
[](const auto&) { return false; }
);
}
// MARK: CSS -> Style
template<typename N, typename... Ks>
struct ToStyleMapping<CSS::PrimitiveNumericOrKeyword<N, Ks...>> {
using type = PrimitiveNumericOrKeyword<StyleType<N>, Ks...>;
};
// MARK: Style -> CSS
template<typename N, typename... Ks>
struct ToCSSMapping<PrimitiveNumericOrKeyword<N, Ks...>> {
using type = CSS::PrimitiveNumericOrKeyword<CSSType<N>, Ks...>;
};
} // namespace Style
} // namespace WebCore
template<typename N, typename... Ks>
struct WTF::FlatteningVariantTraits<WebCore::Style::PrimitiveNumericOrKeyword<N, Ks...>> {
using TypeList = typename WTF::FlatteningVariantTraits<typename WebCore::Style::PrimitiveNumericOrKeyword<N, Ks...>::Representation>::TypeList;
};
template<typename N, typename... Ks> inline constexpr auto WebCore::TreatAsVariantLike<WebCore::Style::PrimitiveNumericOrKeyword<N, Ks...>> = true;
|
