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
175
176
177
178
179
180
181
182
183
184
185
186
187
|
//! The text content type.
//!
//! **Text** contains phrasing content such as
//! [attention][crate::construct::attention] (emphasis, strong),
//! [code (text)][crate::construct::code_text], and actual text.
//!
//! The constructs found in text are:
//!
//! * [Attention][crate::construct::attention]
//! * [Autolink][crate::construct::autolink]
//! * [Character escape][crate::construct::character_escape]
//! * [Character reference][crate::construct::character_reference]
//! * [Code (text)][crate::construct::code_text]
//! * [Hard break (escape)][crate::construct::hard_break_escape]
//! * [HTML (text)][crate::construct::html_text]
//! * [Label start (image)][crate::construct::label_start_image]
//! * [Label start (link)][crate::construct::label_start_link]
//! * [Label end][crate::construct::label_end]
//!
//! > 👉 **Note**: for performance reasons, hard break (trailing) is formed by
//! > [whitespace][crate::construct::partial_whitespace].
use crate::construct::gfm_autolink_literal::resolve as resolve_gfm_autolink_literal;
use crate::construct::partial_whitespace::resolve_whitespace;
use crate::resolve::Name as ResolveName;
use crate::state::{Name as StateName, State};
use crate::tokenizer::Tokenizer;
/// Characters that can start something in text.
const MARKERS: [u8; 10] = [
b'!', // `label_start_image`
b'&', // `character_reference`
b'*', // `attention`
b'<', // `autolink`, `html_text`
b'[', // `label_start_link`
b'\\', // `character_escape`, `hard_break_escape`
b']', // `label_end`
b'_', // `attention`
b'`', // `code_text`
b'~', // `attention` (w/ `gfm_strikethrough`)
];
/// Start of text.
///
/// ```markdown
/// > | abc
/// ^
/// ```
pub fn start(tokenizer: &mut Tokenizer) -> State {
tokenizer.tokenize_state.markers = &MARKERS;
State::Retry(StateName::TextBefore)
}
/// Before text.
///
/// ```markdown
/// > | abc
/// ^
/// ```
pub fn before(tokenizer: &mut Tokenizer) -> State {
match tokenizer.current {
None => {
tokenizer.register_resolver(ResolveName::Data);
tokenizer.register_resolver(ResolveName::Text);
State::Ok
}
Some(b'!') => {
tokenizer.attempt(
State::Next(StateName::TextBefore),
State::Next(StateName::TextBeforeData),
);
State::Retry(StateName::LabelStartImageStart)
}
Some(b'&') => {
tokenizer.attempt(
State::Next(StateName::TextBefore),
State::Next(StateName::TextBeforeData),
);
State::Retry(StateName::CharacterReferenceStart)
}
Some(b'*' | b'_' | b'~') => {
tokenizer.attempt(
State::Next(StateName::TextBefore),
State::Next(StateName::TextBeforeData),
);
State::Retry(StateName::AttentionStart)
}
// `autolink`, `html_text` (order does not matter)
Some(b'<') => {
tokenizer.attempt(
State::Next(StateName::TextBefore),
State::Next(StateName::TextBeforeHtml),
);
State::Retry(StateName::AutolinkStart)
}
Some(b'[') => {
tokenizer.attempt(
State::Next(StateName::TextBefore),
State::Next(StateName::TextBeforeData),
);
State::Retry(StateName::LabelStartLinkStart)
}
Some(b'\\') => {
tokenizer.attempt(
State::Next(StateName::TextBefore),
State::Next(StateName::TextBeforeHardBreakEscape),
);
State::Retry(StateName::CharacterEscapeStart)
}
Some(b']') => {
tokenizer.attempt(
State::Next(StateName::TextBefore),
State::Next(StateName::TextBeforeData),
);
State::Retry(StateName::LabelEndStart)
}
Some(b'`') => {
tokenizer.attempt(
State::Next(StateName::TextBefore),
State::Next(StateName::TextBeforeData),
);
State::Retry(StateName::CodeTextStart)
}
_ => State::Retry(StateName::TextBeforeData),
}
}
/// Before html (text).
///
/// At `<`, which wasn’t an autolink.
///
/// ```markdown
/// > | a <b>
/// ^
/// ```
pub fn before_html(tokenizer: &mut Tokenizer) -> State {
tokenizer.attempt(
State::Next(StateName::TextBefore),
State::Next(StateName::TextBeforeData),
);
State::Retry(StateName::HtmlTextStart)
}
/// Before hard break escape.
///
/// At `\`, which wasn’t a character escape.
///
/// ```markdown
/// > | a \␊
/// ^
/// ```
pub fn before_hard_break_escape(tokenizer: &mut Tokenizer) -> State {
tokenizer.attempt(
State::Next(StateName::TextBefore),
State::Next(StateName::TextBeforeData),
);
State::Retry(StateName::HardBreakEscapeStart)
}
/// Before data.
///
/// ```markdown
/// > | a
/// ^
/// ```
pub fn before_data(tokenizer: &mut Tokenizer) -> State {
tokenizer.attempt(State::Next(StateName::TextBefore), State::Nok);
State::Retry(StateName::DataStart)
}
/// Resolve whitespace.
pub fn resolve(tokenizer: &mut Tokenizer) {
resolve_whitespace(
tokenizer,
tokenizer.parse_state.options.constructs.hard_break_trailing,
true,
);
if tokenizer
.parse_state
.options
.constructs
.gfm_autolink_literal
{
resolve_gfm_autolink_literal(tokenizer);
}
}
|
