forked from WebKit/WebKit
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathCSSMathInvert.cpp
More file actions
120 lines (103 loc) · 4.02 KB
/
CSSMathInvert.cpp
File metadata and controls
120 lines (103 loc) · 4.02 KB
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
109
110
111
112
113
114
115
116
117
118
119
120
/*
* Copyright (C) 2021 Apple Inc. 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 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.
*/
#include "config.h"
#include "CSSMathInvert.h"
#include "CSSNumericValue.h"
#if ENABLE(CSS_TYPED_OM)
#include <wtf/IsoMallocInlines.h>
#include <wtf/text/StringBuilder.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(CSSMathInvert);
Ref<CSSMathInvert> CSSMathInvert::create(CSSNumberish&& numberish)
{
return adoptRef(*new CSSMathInvert(WTFMove(numberish)));
}
static CSSNumericType negatedType(const CSSNumberish& numberish)
{
// https://drafts.css-houdini.org/css-typed-om/#type-of-a-cssmathvalue
return WTF::switchOn(numberish,
[] (double) { return CSSNumericType(); },
[] (const RefPtr<CSSNumericValue>& value) {
if (!value)
return CSSNumericType();
CSSNumericType type = value->type();
auto negate = [] (auto& optional) {
if (optional)
optional = *optional * -1;
};
negate(type.length);
negate(type.angle);
negate(type.time);
negate(type.frequency);
negate(type.resolution);
negate(type.flex);
negate(type.percent);
return type;
}
);
}
CSSMathInvert::CSSMathInvert(CSSNumberish&& numberish)
: CSSMathValue(negatedType(numberish))
, m_value(rectifyNumberish(WTFMove(numberish)))
{
}
void CSSMathInvert::serialize(StringBuilder& builder, OptionSet<SerializationArguments> arguments) const
{
// https://drafts.css-houdini.org/css-typed-om/#calc-serialization
if (!arguments.contains(SerializationArguments::WithoutParentheses))
builder.append(arguments.contains(SerializationArguments::Nested) ? "(" : "calc(");
builder.append("1 / ");
m_value->serialize(builder, arguments);
if (!arguments.contains(SerializationArguments::WithoutParentheses))
builder.append(')');
}
auto CSSMathInvert::toSumValue() const -> std::optional<SumValue>
{
// https://drafts.css-houdini.org/css-typed-om/#create-a-sum-value
auto values = m_value->toSumValue();
if (!values)
return std::nullopt;
if (values->size() != 1)
return std::nullopt;
auto& value = (*values)[0];
if (!value.value)
return std::nullopt;
value.value = 1.0 / value.value;
UnitMap negatedExponents;
for (auto& pair : value.units)
negatedExponents.add(pair.key, -1 * pair.value);
value.units = WTFMove(negatedExponents);
return values;
}
bool CSSMathInvert::equals(const CSSNumericValue& other) const
{
// https://drafts.css-houdini.org/css-typed-om/#equal-numeric-value
auto* otherInvert = dynamicDowncast<CSSMathInvert>(other);
if (!otherInvert)
return false;
return m_value->equals(otherInvert->value());
}
} // namespace WebCore
#endif