-
Notifications
You must be signed in to change notification settings - Fork 2.8k
/
syntax.rs
195 lines (178 loc) · 6.06 KB
/
syntax.rs
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
188
189
190
191
192
193
194
195
use std::sync::Arc;
use gpui::{HighlightStyle, Hsla};
#[derive(Debug, PartialEq, Eq, Clone, Default)]
pub struct SyntaxTheme {
pub highlights: Vec<(String, HighlightStyle)>,
}
impl SyntaxTheme {
#[cfg(any(test, feature = "test-support"))]
pub fn new_test(colors: impl IntoIterator<Item = (&'static str, Hsla)>) -> Self {
Self::new_test_styles(colors.into_iter().map(|(key, color)| {
(
key,
HighlightStyle {
color: Some(color),
..Default::default()
},
)
}))
}
#[cfg(any(test, feature = "test-support"))]
pub fn new_test_styles(
colors: impl IntoIterator<Item = (&'static str, HighlightStyle)>,
) -> Self {
Self {
highlights: colors
.into_iter()
.map(|(key, style)| (key.to_owned(), style))
.collect(),
}
}
pub fn get(&self, name: &str) -> HighlightStyle {
self.highlights
.iter()
.find_map(|entry| if entry.0 == name { Some(entry.1) } else { None })
.unwrap_or_default()
}
pub fn color(&self, name: &str) -> Hsla {
self.get(name).color.unwrap_or_default()
}
pub fn highlight_id(&self, name: &str) -> Option<u32> {
let ix = self.highlights.iter().position(|entry| entry.0 == name)?;
Some(ix as u32)
}
/// Returns a new [`Arc<SyntaxTheme>`] with the given syntax styles merged in.
pub fn merge(base: Arc<Self>, user_syntax_styles: Vec<(String, HighlightStyle)>) -> Arc<Self> {
if user_syntax_styles.is_empty() {
return base;
}
let mut merged_highlights = base.highlights.clone();
for (name, highlight) in user_syntax_styles {
if let Some((_, existing_highlight)) = merged_highlights
.iter_mut()
.find(|(existing_name, _)| existing_name == &name)
{
existing_highlight.color = highlight.color.or(existing_highlight.color);
existing_highlight.font_weight =
highlight.font_weight.or(existing_highlight.font_weight);
existing_highlight.font_style =
highlight.font_style.or(existing_highlight.font_style);
existing_highlight.background_color = highlight
.background_color
.or(existing_highlight.background_color);
existing_highlight.underline = highlight.underline.or(existing_highlight.underline);
existing_highlight.strikethrough =
highlight.strikethrough.or(existing_highlight.strikethrough);
existing_highlight.fade_out = highlight.fade_out.or(existing_highlight.fade_out);
} else {
merged_highlights.push((name, highlight));
}
}
Arc::new(Self {
highlights: merged_highlights,
})
}
}
#[cfg(test)]
mod tests {
use gpui::FontStyle;
use super::*;
#[test]
fn test_syntax_theme_merge() {
// Merging into an empty `SyntaxTheme` keeps all the user-defined styles.
let syntax_theme = SyntaxTheme::merge(
Arc::new(SyntaxTheme::new_test([])),
vec![
(
"foo".to_string(),
HighlightStyle {
color: Some(gpui::red()),
..Default::default()
},
),
(
"foo.bar".to_string(),
HighlightStyle {
color: Some(gpui::green()),
..Default::default()
},
),
],
);
assert_eq!(
syntax_theme,
Arc::new(SyntaxTheme::new_test([
("foo", gpui::red()),
("foo.bar", gpui::green())
]))
);
// Merging empty user-defined styles keeps all the base styles.
let syntax_theme = SyntaxTheme::merge(
Arc::new(SyntaxTheme::new_test([
("foo", gpui::blue()),
("foo.bar", gpui::red()),
])),
Vec::new(),
);
assert_eq!(
syntax_theme,
Arc::new(SyntaxTheme::new_test([
("foo", gpui::blue()),
("foo.bar", gpui::red())
]))
);
let syntax_theme = SyntaxTheme::merge(
Arc::new(SyntaxTheme::new_test([
("foo", gpui::red()),
("foo.bar", gpui::green()),
])),
vec![(
"foo.bar".to_string(),
HighlightStyle {
color: Some(gpui::yellow()),
..Default::default()
},
)],
);
assert_eq!(
syntax_theme,
Arc::new(SyntaxTheme::new_test([
("foo", gpui::red()),
("foo.bar", gpui::yellow())
]))
);
let syntax_theme = SyntaxTheme::merge(
Arc::new(SyntaxTheme::new_test([
("foo", gpui::red()),
("foo.bar", gpui::green()),
])),
vec![(
"foo.bar".to_string(),
HighlightStyle {
font_style: Some(FontStyle::Italic),
..Default::default()
},
)],
);
assert_eq!(
syntax_theme,
Arc::new(SyntaxTheme::new_test_styles([
(
"foo",
HighlightStyle {
color: Some(gpui::red()),
..Default::default()
}
),
(
"foo.bar",
HighlightStyle {
color: Some(gpui::green()),
font_style: Some(FontStyle::Italic),
..Default::default()
}
)
]))
);
}
}