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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/*-
* Copyright 2021 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#ifndef RSPAMD_CSS_VALUE_HXX
#define RSPAMD_CSS_VALUE_HXX
#include <string>
#include <variant>
#include <optional>
#include <vector>
#include <iosfwd>
#include "parse_error.hxx"
#include "css_parser.hxx"
#include "contrib/expected/expected.hpp"
namespace rspamd::css {
struct alignas(int) css_color {
std::uint8_t r;
std::uint8_t g;
std::uint8_t b;
std::uint8_t alpha;
css_color(std::uint8_t _r, std::uint8_t _g, std::uint8_t _b, std::uint8_t _alpha = 255)
: r(_r), g(_g), b(_b), alpha(_alpha)
{
}
css_color() = default;
constexpr auto to_number() const -> std::uint32_t
{
return (std::uint32_t) alpha << 24 |
(std::uint32_t) r << 16 |
(std::uint32_t) g << 8 |
(std::uint32_t) b << 0;
}
constexpr auto to_rgb() const -> std::uint32_t
{
return (std::uint32_t) r << 16 |
(std::uint32_t) g << 8 |
(std::uint32_t) b << 0;
}
friend bool operator==(const css_color &l, const css_color &r)
{
return (memcmp(&l, &r, sizeof(css_color)) == 0);
}
static auto white() -> css_color
{
return css_color{255, 255, 255};
}
static auto black() -> css_color
{
return css_color{0, 0, 0};
}
};
struct css_dimension {
float dim;
bool is_percent;
};
/*
* Simple enum class for display stuff
*/
enum class css_display_value : std::uint8_t {
DISPLAY_INLINE,
DISPLAY_BLOCK,
DISPLAY_TABLE_ROW,
DISPLAY_HIDDEN
};
/*
* Value handler, uses std::variant instead of polymorphic classes for now
* for simplicity
*/
struct css_value {
std::variant<css_color,
float,
css_display_value,
css_dimension,
std::monostate>
value;
css_value()
{
}
css_value(const css_color &color)
: value(color)
{
}
css_value(float num)
: value(num)
{
}
css_value(css_dimension dim)
: value(dim)
{
}
css_value(css_display_value d)
: value(d)
{
}
auto to_color(void) const -> std::optional<css_color>
{
return extract_value_maybe<css_color>();
}
auto to_number(void) const -> std::optional<float>
{
return extract_value_maybe<float>();
}
auto to_dimension(void) const -> std::optional<css_dimension>
{
return extract_value_maybe<css_dimension>();
}
auto to_display(void) const -> std::optional<css_display_value>
{
return extract_value_maybe<css_display_value>();
}
auto is_valid(void) const -> bool
{
return !(std::holds_alternative<std::monostate>(value));
}
auto debug_str() const -> std::string;
static auto maybe_color_from_string(const std::string_view &input)
-> std::optional<css_value>;
static auto maybe_color_from_hex(const std::string_view &input)
-> std::optional<css_value>;
static auto maybe_color_from_function(const css_consumed_block::css_function_block &func)
-> std::optional<css_value>;
static auto maybe_dimension_from_number(const css_parser_token &tok)
-> std::optional<css_value>;
static auto maybe_display_from_string(const std::string_view &input)
-> std::optional<css_value>;
private:
template<typename T>
auto extract_value_maybe(void) const -> std::optional<T>
{
if (std::holds_alternative<T>(value)) {
return std::get<T>(value);
}
return std::nullopt;
}
};
}// namespace rspamd::css
#endif//RSPAMD_CSS_VALUE_HXX
|
