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Extract macro parsing to helix-view and add unit tests

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Omnikar 2021-12-25 03:38:14 -05:00 • committed by Blaž Hrastnik
parent 2d4bc0aec7
commit 8340d73545
2 changed files with 155 additions and 33 deletions
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35
helix-term/src/commands.rs
View file

@ -6037,39 +6037,8 @@ fn record_macro(cx: &mut Context) {
fn replay_macro(cx: &mut Context) {
let reg = cx.register.unwrap_or('@');
// TODO: macro keys should be parsed one by one and not space delimited (see kak)
let keys: Vec<KeyEvent> = if let Some([keys_str]) = cx.editor.registers.read(reg) {
let mut keys_res: anyhow::Result<_> = Ok(Vec::new());
let mut i = 0;
while let Ok(keys) = &mut keys_res {
if i >= keys_str.len() {
break;
}
if !keys_str.is_char_boundary(i) {
i += 1;
continue;
}
let s = &keys_str[i..];
let mut end_i = 1;
while !s.is_char_boundary(end_i) {
end_i += 1;
}
let c = &s[..end_i];
if c != "<" {
keys.push(c);
i += end_i;
} else {
match s.find('>').context("'>' expected") {
Ok(end_i) => {
keys.push(&s[1..end_i]);
i += end_i + 1;
}
Err(err) => keys_res = Err(err),
}
}
}
match keys_res.and_then(|keys| keys.into_iter().map(str::parse).collect()) {
match helix_view::input::parse_macro(keys_str) {
Ok(keys) => keys,
Err(err) => {
cx.editor.set_error(format!("Invalid macro: {}", err));
@ -6080,8 +6049,8 @@ fn replay_macro(cx: &mut Context) {
cx.editor.set_error(format!("Register [{}] empty", reg));
return;
};
let count = cx.count();
let count = cx.count();
cx.callback = Some(Box::new(
move |compositor: &mut Compositor, cx: &mut compositor::Context| {
for _ in 0..count {

153
helix-view/src/input.rs
View file

@ -254,6 +254,43 @@ impl From<KeyEvent> for crossterm::event::KeyEvent {
}
}
pub fn parse_macro(keys_str: &str) -> anyhow::Result<Vec<KeyEvent>> {
use anyhow::Context;
let mut keys_res: anyhow::Result<_> = Ok(Vec::new());
let mut i = 0;
while let Ok(keys) = &mut keys_res {
if i >= keys_str.len() {
break;
}
if !keys_str.is_char_boundary(i) {
i += 1;
continue;
}
let s = &keys_str[i..];
let mut end_i = 1;
while !s.is_char_boundary(end_i) {
end_i += 1;
}
let c = &s[..end_i];
if c == ">" {
keys_res = Err(anyhow!("Unmatched '>'"));
} else if c != "<" {
keys.push(c);
i += end_i;
} else {
match s.find('>').context("'>' expected") {
Ok(end_i) => {
keys.push(&s[1..end_i]);
i += end_i + 1;
}
Err(err) => keys_res = Err(err),
}
}
}
keys_res.and_then(|keys| keys.into_iter().map(str::parse).collect())
}
#[cfg(test)]
mod test {
use super::*;
@ -339,4 +376,120 @@ mod test {
assert!(str::parse::<KeyEvent>("123").is_err());
assert!(str::parse::<KeyEvent>("S--").is_err());
}
#[test]
fn parsing_valid_macros() {
assert_eq!(
parse_macro("xdo").ok(),
Some(vec![
KeyEvent {
code: KeyCode::Char('x'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('d'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('o'),
modifiers: KeyModifiers::NONE,
},
]),
);
assert_eq!(
parse_macro("<C-w>v<C-w>h<C-o>xx<A-s>").ok(),
Some(vec![
KeyEvent {
code: KeyCode::Char('w'),
modifiers: KeyModifiers::CONTROL,
},
KeyEvent {
code: KeyCode::Char('v'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('w'),
modifiers: KeyModifiers::CONTROL,
},
KeyEvent {
code: KeyCode::Char('h'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('o'),
modifiers: KeyModifiers::CONTROL,
},
KeyEvent {
code: KeyCode::Char('x'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('x'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('s'),
modifiers: KeyModifiers::ALT,
},
])
);
assert_eq!(
parse_macro(":o foo.bar<ret>").ok(),
Some(vec![
KeyEvent {
code: KeyCode::Char(':'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('o'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char(' '),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('f'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('o'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('o'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('.'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('b'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('a'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Char('r'),
modifiers: KeyModifiers::NONE,
},
KeyEvent {
code: KeyCode::Enter,
modifiers: KeyModifiers::NONE,
},
])
);
}
#[test]
fn parsing_invalid_macros_fails() {
assert!(parse_macro("abc<C-").is_err());
assert!(parse_macro("abc>123").is_err());
assert!(parse_macro("wd<foo>").is_err());
}
}