git.iko.soy/helix
on master help sign in
Start swapping from termwiz to crossterm + async.
6905ff0Blaž Hrastnik
Cargo.lock+335−349
compare with master
unifiedsplit
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680+version = "2.0.2"
689source = "registry+https://github.com/rust-lang/crates.io-index"
681source = "registry+https://github.com/rust-lang/crates.io-index"
690−checksum = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
682+checksum = "374fff4ff9701ff8b6ad0d14bacd3156c44063632d8c136186ff5967d48999a7"
691−
692−[[package]]
693−name = "vtparse"
694−version = "0.2.2"
695dependencies = [
683dependencies = [
696− "utf8parse",
684+ "bitflags",
685+ "wepoll-sys",
697]
686]
698
687
699[[package]]
688[[package]]
700−name = "wasi"
689+name = "wepoll-sys"
701−version = "0.9.0+wasi-snapshot-preview1"
690+version = "2.0.0"
702source = "registry+https://github.com/rust-lang/crates.io-index"
691source = "registry+https://github.com/rust-lang/crates.io-index"
703−checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
692+checksum = "9082a777aed991f6769e2b654aa0cb29f1c3d615daf009829b07b66c7aff6a24"
693+dependencies = [
694+ "cc",
695+]
704
696
705[[package]]
697[[package]]
706name = "winapi"
698name = "winapi"
@@ -723,9 +715,3 @@ name = "winapi-x86_64-pc-windows-gnu"
723version = "0.4.0"
715version = "0.4.0"
724source = "registry+https://github.com/rust-lang/crates.io-index"
716source = "registry+https://github.com/rust-lang/crates.io-index"
725checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
717checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
726−
727−[[package]]
728−name = "xi-unicode"
729−version = "0.2.0"
730−source = "registry+https://github.com/rust-lang/crates.io-index"
731−checksum = "7395cdb9d0a6219fa0ea77d08c946adf9c1984c72fcd443ace30365f3daadef7"
helix-core/src/state.rs+5−1
@@ -18,7 +18,11 @@ impl State {
18
18
19 // TODO: buf/selection accessors
19 // TODO: buf/selection accessors
20
20
21− // update/transact
21+ // update/transact:
22+ // update(desc) => transaction ? transaction.doc() for applied doc
23+ // transaction.apply(doc)
24+ // doc.transact(fn -> ... end)
25+
22 // replaceSelection (transaction that replaces selection)
26 // replaceSelection (transaction that replaces selection)
23 // changeByRange
27 // changeByRange
24 // changes
28 // changes
helix-core/src/transaction.rs+7−26
@@ -1,19 +1,3 @@
1−// pub struct Change {
2−// from: usize,
3−// to: usize,
4−// insert: Option<String>,
5−// }
6−
7−// 40 bytes (8 + 24 + 8) -> strings are really big 24 as String, 16 as &str
8−// pub struct Change {
9−// /// old extent
10−// old_extent: usize,
11−// /// inserted text, new extent equal to insert length
12−// insert: Option<String>,
13−// /// distance from the previous change
14−// distance: usize,
15−// }
16−
17use crate::{Buffer, Rope, Selection, Tendril};
1use crate::{Buffer, Rope, Selection, Tendril};
18
2
19// TODO: divided into three different operations, I sort of like having just
3// TODO: divided into three different operations, I sort of like having just
@@ -33,11 +17,11 @@ pub enum Change {
33 Insert(Tendril),
17 Insert(Tendril),
34}
18}
35
19
36−impl Change {
20+// impl Change {
37− pub fn new(from: usize, to: usize, insert: Option<Tendril>) {
21+// pub fn new(from: usize, to: usize, insert: Option<Tendril>) {
38− // old_extent, new_extent, insert
22+// // old_extent, new_extent, insert
39− }
23+// }
40−}
24+// }
41
25
42#[derive(Copy, Clone, PartialEq, Eq)]
26#[derive(Copy, Clone, PartialEq, Eq)]
43pub enum Assoc {
27pub enum Assoc {
@@ -46,13 +30,8 @@ pub enum Assoc {
46}
30}
47
31
48// ChangeSpec = Change | ChangeSet | Vec<Change>
32// ChangeSpec = Change | ChangeSet | Vec<Change>
49−// ChangeDesc as a ChangeSet without text: can't be applied, cheaper to store.
50−// ChangeSet = ChangeDesc with Text
51#[derive(Debug)]
33#[derive(Debug)]
52pub struct ChangeSet {
34pub struct ChangeSet {
53− // basically Vec<ChangeDesc> where ChangeDesc = (current len, replacement len?)
54− // (0, n>0) for insertion, (n>0, 0) for deletion, (>0, >0) for replacement
55− // sections: Vec<(usize, isize)>,
56 changes: Vec<Change>,
35 changes: Vec<Change>,
57 /// The required document length. Will refuse to apply changes unless it matches.
36 /// The required document length. Will refuse to apply changes unless it matches.
58 len: usize,
37 len: usize,
@@ -341,6 +320,8 @@ pub struct Transaction {
341 // scroll_into_view
320 // scroll_into_view
342}
321}
343
322
323+impl Transaction {}
324+
344#[cfg(test)]
325#[cfg(test)]
345mod test {
326mod test {
346 use super::*;
327 use super::*;
helix-term/Cargo.toml+13−4
@@ -10,13 +10,22 @@ edition = "2018"
10name = "hx"
10name = "hx"
11path = "src/main.rs"
11path = "src/main.rs"
12
12
13−# [[bin]]
13+[[bin]]
14−# name = "line"
14+name = "line"
15−# path = "src/line.rs"
15+path = "src/line.rs"
16
16
17[dependencies]
17[dependencies]
18# termwiz = { git = "https://github.com/wez/wezterm", features = ["widgets"] }
18# termwiz = { git = "https://github.com/wez/wezterm", features = ["widgets"] }
19−termwiz = { path = "../../wezterm/termwiz", default-features = false, features = ["widgets"] }
19+# termwiz = { path = "../../wezterm/termwiz", default-features = false, features = ["widgets"] }
20+
20anyhow = "1.0.31"
21anyhow = "1.0.31"
21argh = "0.1.3"
22argh = "0.1.3"
22helix-core = { path = "../helix-core" }
23helix-core = { path = "../helix-core" }
24+# crossterm = { version = "0.17.5", features = ["event-stream"] }
25+crossterm = { git = "https://github.com/crossterm-rs/crossterm", branch = "mio-update", features = ["event-stream"] }
26+
27+futures = { version = "0.3.5", default-features = false, features = ["std"] }
28+# futures-timer = "3.0.2"
29+smol = "0.1.10"
30+num_cpus = "1.13.0"
31+piper = "0.1.2"
helix-term/src/line.rs+79−93
@@ -1,111 +1,97 @@
1−use termwiz::cell::AttributeChange;
1+//! Demonstrates how to read events asynchronously with async-std.
2−use termwiz::color::{AnsiColor, ColorAttribute, RgbColor};
2+//!
3−use termwiz::lineedit::*;
3+//! cargo run --features="event-stream" --example event-stream-async-std
4
4
5−#[derive(Default)]
5+use std::{
6−struct Host {
6+ io::{stdout, Write},
7− history: BasicHistory,
7+ time::Duration,
8−}
8+};
9
9
10−impl LineEditorHost for Host {
10+use futures::{future::FutureExt, select, StreamExt};
11− // Render the prompt with a darkslateblue background color if
11+use smol::Timer;
12− // the terminal supports true color, otherwise render it with
12+// use futures_timer::Delay;
13− // a navy blue ansi color.
14− fn render_prompt(&self, prompt: &str) -> Vec<OutputElement> {
15− vec![
16− OutputElement::Attribute(AttributeChange::Background(
17− ColorAttribute::TrueColorWithPaletteFallback(
18− RgbColor::from_named("darkslateblue").unwrap(),
19− AnsiColor::Navy.into(),
20− ),
21− )),
22− OutputElement::Text(prompt.to_owned()),
23− ]
24− }
25
13
26− fn history(&mut self) -> &mut dyn History {
14+use crossterm::{
27− &mut self.history
15+ cursor::position,
28− }
16+ event::{DisableMouseCapture, EnableMouseCapture, Event, EventStream, KeyCode},
17+ execute,
18+ terminal::{disable_raw_mode, enable_raw_mode},
19+ Result,
20+};
21+
22+const HELP: &str = r#"EventStream based on futures::Stream with async-std
23+ - Keyboard, mouse and terminal resize events enabled
24+ - Prints "." every second if there's no event
25+ - Hit "c" to print current cursor position
26+ - Use Esc to quit
27+"#;
28+
29+async fn print_events() {
30+ let mut reader = EventStream::new();
29
31
30− /// Demo of the completion API for words starting with "h" or "he"
32+ loop {
31− fn complete(&self, line: &str, cursor_position: usize) -> Vec<CompletionCandidate> {
33+ let mut delay = Timer::after(Duration::from_millis(1_000)).fuse();
32− let mut candidates = vec![];
34+ let mut event = reader.next().fuse();
33− if let Some((range, word)) = word_at_cursor(line, cursor_position) {
35+
34− let words = &["hello", "help", "he-man"];
36+ select! {
35−
37+ _ = delay => { println!(".\r"); },
36− for w in words {
38+ maybe_event = event => {
37− if w.starts_with(word) {
39+ match maybe_event {
38− candidates.push(CompletionCandidate {
40+ Some(Ok(event)) => {
39− range: range.clone(),
41+ println!("Event::{:?}\r", event);
40− text: w.to_string(),
42+
43+ if event == Event::Key(KeyCode::Char('c').into()) {
44+ println!("Cursor position: {:?}\r", position());
45+ }
46+
47+ if event == Event::Key(KeyCode::Esc.into()) {
48+ break;
49+ }
41− });
50+ }
51+ Some(Err(e)) => println!("Error: {:?}\r", e),
52+ None => break,
42 }
53 }
43 }
54 }
44− }
55+ };
45− candidates
46 }
56 }
47}
57}
48
58
49−/// This is a conceptually simple function that computes the bounds
59+fn main() -> Result<()> {
50−/// of the whitespace delimited word at the specified cursor position
60+ println!("{}", HELP);
51−/// in the supplied line string.
52−/// It returns the range and the corresponding slice out of the line.
53−/// This function is sufficient for example purposes; in a real application
54−/// the equivalent function would need to be aware of quoting and other
55−/// application specific context.
56−fn word_at_cursor(line: &str, cursor_position: usize) -> Option<(std::ops::Range<usize>, &str)> {
57− let char_indices: Vec<(usize, char)> = line.char_indices().collect();
58− if char_indices.is_empty() {
59− return None;
60− }
61− let char_position = char_indices
62− .iter()
63− .position(|(idx, _)| *idx == cursor_position)
64− .unwrap_or(char_indices.len());
65−
66− // Look back until we find whitespace
67− let mut start_position = char_position;
68− while start_position > 0
69− && start_position <= char_indices.len()
70− && !char_indices[start_position - 1].1.is_whitespace()
71− {
72− start_position -= 1;
73− }
74
61
75− // Look forwards until we find whitespace
62+ enable_raw_mode()?;
76− let mut end_position = char_position;
63+
77− while end_position < char_indices.len() && !char_indices[end_position].1.is_whitespace() {
64+ let mut stdout = stdout();
78− end_position += 1;
65+ execute!(stdout, EnableMouseCapture)?;
79− }
66+
67+ use std::thread;
68+
69+ // Same number of threads as there are CPU cores.
70+ let num_threads = num_cpus::get().max(1);
80
71
81− if end_position > start_position {
72+ // A channel that sends the shutdown signal.
82− let range = char_indices[start_position].0
73+ let (s, r) = piper::chan::<()>(0);
83− ..char_indices
74+ let mut threads = Vec::new();
84− .get(end_position)
75+
85− .map(|c| c.0 + 1)
76+ // Create an executor thread pool.
86− .unwrap_or(line.len());
77+ for _ in 0..num_threads {
87− Some((range.clone(), &line[range]))
78+ // Spawn an executor thread that waits for the shutdown signal.
88− } else {
79+ let r = r.clone();
89− None
80+ threads.push(thread::spawn(move || smol::run(r.recv())));
90 }
81 }
91−}
92
82
93−fn main() -> anyhow::Result<()> {
83+ // No need to `run()`, now we can just block on the main future.
94− println!("Type `exit` to quit this example, or start a word with `h` and press Tab.");
84+ smol::block_on(print_events());
95− let mut terminal = line_editor_terminal()?;
96− let mut editor = LineEditor::new(&mut terminal);
97
85
98− let mut host = Host::default();
86+ // Send a shutdown signal.
99− loop {
87+ drop(s);
100− if let Some(line) = editor.read_line(&mut host)? {
101− println!("read line: {:?}", line);
102− if line == "exit" {
103− break;
104− }
105
88
106− host.history().add(&line);
89+ // Wait for threads to finish.
107− }
90+ for t in threads {
91+ t.join().unwrap();
108 }
92 }
109
93
110− Ok(())
94+ execute!(stdout, DisableMouseCapture)?;
95+
96+ disable_raw_mode()
111}
97}
helix-term/src/main.rs+4−4
@@ -1,6 +1,6 @@
1−mod editor;
1+// mod editor;
2
2
3−use editor::Editor;
3+// use editor::Editor;
4
4
5use argh::FromArgs;
5use argh::FromArgs;
6use std::{env, path::PathBuf};
6use std::{env, path::PathBuf};
@@ -16,9 +16,9 @@ pub struct Args {
16
16
17fn main() -> Result<(), Error> {
17fn main() -> Result<(), Error> {
18 let args: Args = argh::from_env();
18 let args: Args = argh::from_env();
19− let mut editor = Editor::new(args)?;
19+ // let mut editor = Editor::new(args)?;
20
20
21− editor.run()?;
21+ // editor.run()?;
22
22
23 Ok(())
23 Ok(())
24}
24}