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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
use clap::ArgMatches as Args;
use helix_view::{document::Mode, Document, Editor, Theme, View};
use crate::compositor::Compositor;
use crate::ui;
use log::{error, info};
use std::{
io::{self, stdout, Stdout, Write},
path::PathBuf,
sync::Arc,
time::Duration,
};
use smol::prelude::*;
use anyhow::Error;
use crossterm::{
event::{Event, EventStream},
execute, terminal,
};
use tui::layout::Rect;
pub struct Application {
compositor: Compositor,
editor: Editor,
executor: &'static smol::Executor<'static>,
}
impl Application {
pub fn new(mut args: Args, executor: &'static smol::Executor<'static>) -> Result<Self, Error> {
let mut compositor = Compositor::new()?;
let size = compositor.size();
let mut editor = Editor::new(size);
let files = args.values_of_t::<PathBuf>("files").unwrap();
for file in files {
editor.open(file, executor)?;
}
compositor.push(Box::new(ui::EditorView::new()));
let mut app = Self {
editor,
compositor,
executor,
};
Ok(app)
}
fn render(&mut self) {
let executor = &self.executor;
let editor = &mut self.editor;
let compositor = &mut self.compositor;
let mut cx = crate::compositor::Context {
editor,
executor,
scroll: None,
};
compositor.render(&mut cx);
}
pub async fn event_loop(&mut self) {
let mut reader = EventStream::new();
self.render();
loop {
if self.editor.should_close() {
break;
}
use futures_util::{select, FutureExt};
select! {
event = reader.next().fuse() => {
self.handle_terminal_events(event)
}
call = self.editor.language_servers.incoming.next().fuse() => {
self.handle_language_server_message(call).await
}
}
}
}
pub fn handle_terminal_events(&mut self, event: Option<Result<Event, crossterm::ErrorKind>>) {
let mut cx = crate::compositor::Context {
editor: &mut self.editor,
executor: &self.executor,
scroll: None,
};
// Handle key events
let should_redraw = match event {
Some(Ok(Event::Resize(width, height))) => {
self.compositor.resize(width, height);
self.compositor
.handle_event(Event::Resize(width, height), &mut cx)
}
Some(Ok(event)) => self.compositor.handle_event(event, &mut cx),
Some(Err(x)) => panic!("{}", x),
None => panic!(),
};
if should_redraw && !self.editor.should_close() {
self.render();
}
}
pub async fn handle_language_server_message(&mut self, call: Option<helix_lsp::Call>) {
use helix_lsp::{Call, Notification};
match call {
Some(Call::Notification(helix_lsp::jsonrpc::Notification {
method, params, ..
})) => {
let notification = Notification::parse(&method, params);
match notification {
Notification::PublishDiagnostics(params) => {
let path = Some(params.uri.to_file_path().unwrap());
let view = self
.editor
.tree
.views()
.map(|(view, _key)| view)
.find(|view| view.doc.path() == path.as_ref());
if let Some(view) = view {
let doc = view.doc.text().slice(..);
let diagnostics = params
.diagnostics
.into_iter()
.map(|diagnostic| {
use helix_core::diagnostic::Severity::*;
use helix_core::{
diagnostic::{Range, Severity},
Diagnostic,
};
use helix_lsp::{lsp, util::lsp_pos_to_pos};
use lsp::DiagnosticSeverity;
let start = lsp_pos_to_pos(doc, diagnostic.range.start);
let end = lsp_pos_to_pos(doc, diagnostic.range.end);
Diagnostic {
range: Range { start, end },
line: diagnostic.range.start.line as usize,
message: diagnostic.message,
severity: diagnostic.severity.map(
|severity| match severity {
DiagnosticSeverity::Error => Error,
DiagnosticSeverity::Warning => Warning,
DiagnosticSeverity::Information => Info,
DiagnosticSeverity::Hint => Hint,
},
),
// code
// source
}
})
.collect();
view.doc.diagnostics = diagnostics;
// TODO: we want to process all the events in queue, then render. publishDiagnostic tends to send a whole bunch of events
self.render();
}
}
_ => unreachable!(),
}
}
Some(Call::MethodCall(call)) => {
error!("Method not found {}", call.method);
// self.language_server.reply(
// call.id,
// // TODO: make a Into trait that can cast to Err(jsonrpc::Error)
// Err(helix_lsp::jsonrpc::Error {
// code: helix_lsp::jsonrpc::ErrorCode::MethodNotFound,
// message: "Method not found".to_string(),
// data: None,
// }),
// );
}
None => (),
e => unreachable!("{:?}", e),
}
}
pub async fn run(&mut self) -> Result<(), Error> {
terminal::enable_raw_mode()?;
let mut stdout = stdout();
execute!(stdout, terminal::EnterAlternateScreen)?;
// Exit the alternate screen and disable raw mode before panicking
let hook = std::panic::take_hook();
std::panic::set_hook(Box::new(move |info| {
execute!(std::io::stdout(), terminal::LeaveAlternateScreen);
terminal::disable_raw_mode();
hook(info);
}));
self.event_loop().await;
// reset cursor shape
write!(stdout, "\x1B[2 q");
execute!(stdout, terminal::LeaveAlternateScreen)?;
terminal::disable_raw_mode()?;
Ok(())
}
}
|
