diff options
Diffstat (limited to 'helix-term/src/keymap.rs')
| -rw-r--r-- | helix-term/src/keymap.rs | 336 |
1 files changed, 20 insertions, 316 deletions
diff --git a/helix-term/src/keymap.rs b/helix-term/src/keymap.rs index f6bcbcc9..24924832 100644 --- a/helix-term/src/keymap.rs +++ b/helix-term/src/keymap.rs @@ -3,6 +3,8 @@ pub use crate::commands::Command; use anyhow::{anyhow, Error, Result}; use helix_core::hashmap; use helix_view::document::Mode; +use helix_view::input::{KeyCode, KeyEvent, KeyModifiers}; +use serde::Deserialize; use std::{ collections::HashMap, fmt::Display, @@ -99,14 +101,6 @@ use std::{ // D] = last diagnostic // } -// #[cfg(feature = "term")] -pub use crossterm::event::{KeyCode, KeyEvent, KeyModifiers}; - -#[derive(Clone, Debug)] -pub struct Keymap(pub HashMap<KeyEvent, Command>); -#[derive(Clone, Debug)] -pub struct Keymaps(pub HashMap<Mode, Keymap>); - #[macro_export] macro_rules! key { ($key:ident) => { @@ -141,9 +135,21 @@ macro_rules! alt { }; } +#[derive(Debug, PartialEq, Deserialize)] +#[serde(transparent)] +pub struct Keymaps(pub HashMap<Mode, HashMap<KeyEvent, Command>>); + +impl Deref for Keymaps { + type Target = HashMap<Mode, HashMap<KeyEvent, Command>>; + + fn deref(&self) -> &Self::Target { + &self.0 + } +} + impl Default for Keymaps { - fn default() -> Self { - let normal = Keymap(hashmap!( + fn default() -> Keymaps { + let normal = hashmap!( key!('h') => Command::move_char_left, key!('j') => Command::move_line_down, key!('k') => Command::move_line_up, @@ -277,12 +283,12 @@ impl Default for Keymaps { key!('z') => Command::view_mode, key!('"') => Command::select_register, - )); + ); // TODO: decide whether we want normal mode to also be select mode (kakoune-like), or whether // we keep this separate select mode. More keys can fit into normal mode then, but it's weird // because some selection operations can now be done from normal mode, some from select mode. let mut select = normal.clone(); - select.0.extend( + select.extend( hashmap!( key!('h') => Command::extend_char_left, key!('j') => Command::extend_line_down, @@ -315,7 +321,7 @@ impl Default for Keymaps { // TODO: select could be normal mode with some bindings merged over Mode::Normal => normal, Mode::Select => select, - Mode::Insert => Keymap(hashmap!( + Mode::Insert => hashmap!( key!(Esc) => Command::normal_mode as Command, key!(Backspace) => Command::delete_char_backward, key!(Delete) => Command::delete_char_forward, @@ -329,309 +335,7 @@ impl Default for Keymaps { key!(PageDown) => Command::page_down, ctrl!('x') => Command::completion, ctrl!('w') => Command::delete_word_backward, - )), + ), )) } } - -// Newtype wrapper over keys to allow toml serialization/parsing -#[derive(Debug, PartialEq, PartialOrd, Clone, Copy, Hash)] -pub struct RepresentableKeyEvent(pub KeyEvent); -impl Display for RepresentableKeyEvent { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - let Self(key) = self; - f.write_fmt(format_args!( - "{}{}{}", - if key.modifiers.contains(KeyModifiers::SHIFT) { - "S-" - } else { - "" - }, - if key.modifiers.contains(KeyModifiers::ALT) { - "A-" - } else { - "" - }, - if key.modifiers.contains(KeyModifiers::CONTROL) { - "C-" - } else { - "" - }, - ))?; - match key.code { - KeyCode::Backspace => f.write_str("backspace")?, - KeyCode::Enter => f.write_str("ret")?, - KeyCode::Left => f.write_str("left")?, - KeyCode::Right => f.write_str("right")?, - KeyCode::Up => f.write_str("up")?, - KeyCode::Down => f.write_str("down")?, - KeyCode::Home => f.write_str("home")?, - KeyCode::End => f.write_str("end")?, - KeyCode::PageUp => f.write_str("pageup")?, - KeyCode::PageDown => f.write_str("pagedown")?, - KeyCode::Tab => f.write_str("tab")?, - KeyCode::BackTab => f.write_str("backtab")?, - KeyCode::Delete => f.write_str("del")?, - KeyCode::Insert => f.write_str("ins")?, - KeyCode::Null => f.write_str("null")?, - KeyCode::Esc => f.write_str("esc")?, - KeyCode::Char('<') => f.write_str("lt")?, - KeyCode::Char('>') => f.write_str("gt")?, - KeyCode::Char('+') => f.write_str("plus")?, - KeyCode::Char('-') => f.write_str("minus")?, - KeyCode::Char(';') => f.write_str("semicolon")?, - KeyCode::Char('%') => f.write_str("percent")?, - KeyCode::F(i) => f.write_fmt(format_args!("F{}", i))?, - KeyCode::Char(c) => f.write_fmt(format_args!("{}", c))?, - }; - Ok(()) - } -} - -impl FromStr for RepresentableKeyEvent { - type Err = Error; - - fn from_str(s: &str) -> Result<Self, Self::Err> { - let mut tokens: Vec<_> = s.split('-').collect(); - let code = match tokens.pop().ok_or_else(|| anyhow!("Missing key code"))? { - "backspace" => KeyCode::Backspace, - "space" => KeyCode::Char(' '), - "ret" => KeyCode::Enter, - "lt" => KeyCode::Char('<'), - "gt" => KeyCode::Char('>'), - "plus" => KeyCode::Char('+'), - "minus" => KeyCode::Char('-'), - "semicolon" => KeyCode::Char(';'), - "percent" => KeyCode::Char('%'), - "left" => KeyCode::Left, - "right" => KeyCode::Right, - "up" => KeyCode::Down, - "home" => KeyCode::Home, - "end" => KeyCode::End, - "pageup" => KeyCode::PageUp, - "pagedown" => KeyCode::PageDown, - "tab" => KeyCode::Tab, - "backtab" => KeyCode::BackTab, - "del" => KeyCode::Delete, - "ins" => KeyCode::Insert, - "null" => KeyCode::Null, - "esc" => KeyCode::Esc, - single if single.len() == 1 => KeyCode::Char(single.chars().next().unwrap()), - function if function.len() > 1 && function.starts_with('F') => { - let function: String = function.chars().skip(1).collect(); - let function = str::parse::<u8>(&function)?; - (function > 0 && function < 13) - .then(|| KeyCode::F(function)) - .ok_or_else(|| anyhow!("Invalid function key '{}'", function))? - } - invalid => return Err(anyhow!("Invalid key code '{}'", invalid)), - }; - - let mut modifiers = KeyModifiers::empty(); - for token in tokens { - let flag = match token { - "S" => KeyModifiers::SHIFT, - "A" => KeyModifiers::ALT, - "C" => KeyModifiers::CONTROL, - _ => return Err(anyhow!("Invalid key modifier '{}-'", token)), - }; - - if modifiers.contains(flag) { - return Err(anyhow!("Repeated key modifier '{}-'", token)); - } - modifiers.insert(flag); - } - - Ok(RepresentableKeyEvent(KeyEvent { code, modifiers })) - } -} - -pub fn parse_keymaps(toml_keymaps: &HashMap<String, HashMap<String, String>>) -> Result<Keymaps> { - let mut keymaps = Keymaps::default(); - - for (mode, map) in toml_keymaps { - let mode = Mode::from_str(&mode)?; - for (key, command) in map { - let key = str::parse::<RepresentableKeyEvent>(&key)?; - let command = str::parse::<Command>(&command)?; - keymaps.0.get_mut(&mode).unwrap().0.insert(key.0, command); - } - } - Ok(keymaps) -} - -impl Deref for Keymap { - type Target = HashMap<KeyEvent, Command>; - fn deref(&self) -> &Self::Target { - &self.0 - } -} - -impl Deref for Keymaps { - type Target = HashMap<Mode, Keymap>; - fn deref(&self) -> &Self::Target { - &self.0 - } -} - -impl DerefMut for Keymap { - fn deref_mut(&mut self) -> &mut Self::Target { - &mut self.0 - } -} - -impl DerefMut for Keymaps { - fn deref_mut(&mut self) -> &mut Self::Target { - &mut self.0 - } -} - -#[cfg(test)] -mod test { - use crate::config::Config; - - use super::*; - - impl PartialEq for Command { - fn eq(&self, other: &Self) -> bool { - self.name() == other.name() - } - } - - #[test] - fn parsing_keymaps_config_file() { - let sample_keymaps = r#" - [keys.insert] - y = "move_line_down" - S-C-a = "delete_selection" - - [keys.normal] - A-F12 = "move_next_word_end" - "#; - - let config: Config = toml::from_str(sample_keymaps).unwrap(); - assert_eq!( - *config - .keymaps - .0 - .get(&Mode::Insert) - .unwrap() - .0 - .get(&KeyEvent { - code: KeyCode::Char('y'), - modifiers: KeyModifiers::NONE - }) - .unwrap(), - Command::move_line_down - ); - assert_eq!( - *config - .keymaps - .0 - .get(&Mode::Insert) - .unwrap() - .0 - .get(&KeyEvent { - code: KeyCode::Char('a'), - modifiers: KeyModifiers::SHIFT | KeyModifiers::CONTROL - }) - .unwrap(), - Command::delete_selection - ); - assert_eq!( - *config - .keymaps - .0 - .get(&Mode::Normal) - .unwrap() - .0 - .get(&KeyEvent { - code: KeyCode::F(12), - modifiers: KeyModifiers::ALT - }) - .unwrap(), - Command::move_next_word_end - ); - } - - #[test] - fn parsing_unmodified_keys() { - assert_eq!( - str::parse::<RepresentableKeyEvent>("backspace").unwrap(), - RepresentableKeyEvent(KeyEvent { - code: KeyCode::Backspace, - modifiers: KeyModifiers::NONE - }) - ); - - assert_eq!( - str::parse::<RepresentableKeyEvent>("left").unwrap(), - RepresentableKeyEvent(KeyEvent { - code: KeyCode::Left, - modifiers: KeyModifiers::NONE - }) - ); - - assert_eq!( - str::parse::<RepresentableKeyEvent>(",").unwrap(), - RepresentableKeyEvent(KeyEvent { - code: KeyCode::Char(','), - modifiers: KeyModifiers::NONE - }) - ); - - assert_eq!( - str::parse::<RepresentableKeyEvent>("w").unwrap(), - RepresentableKeyEvent(KeyEvent { - code: KeyCode::Char('w'), - modifiers: KeyModifiers::NONE - }) - ); - - assert_eq!( - str::parse::<RepresentableKeyEvent>("F12").unwrap(), - RepresentableKeyEvent(KeyEvent { - code: KeyCode::F(12), - modifiers: KeyModifiers::NONE - }) - ); - } - - fn parsing_modified_keys() { - assert_eq!( - str::parse::<RepresentableKeyEvent>("S-minus").unwrap(), - RepresentableKeyEvent(KeyEvent { - code: KeyCode::Char('-'), - modifiers: KeyModifiers::SHIFT - }) - ); - - assert_eq!( - str::parse::<RepresentableKeyEvent>("C-A-S-F12").unwrap(), - RepresentableKeyEvent(KeyEvent { - code: KeyCode::F(12), - modifiers: KeyModifiers::SHIFT | KeyModifiers::CONTROL | KeyModifiers::ALT - }) - ); - - assert_eq!( - str::parse::<RepresentableKeyEvent>("S-C-2").unwrap(), - RepresentableKeyEvent(KeyEvent { - code: KeyCode::F(2), - modifiers: KeyModifiers::SHIFT | KeyModifiers::CONTROL - }) - ); - } - - #[test] - fn parsing_nonsensical_keys_fails() { - assert!(str::parse::<RepresentableKeyEvent>("F13").is_err()); - assert!(str::parse::<RepresentableKeyEvent>("F0").is_err()); - assert!(str::parse::<RepresentableKeyEvent>("aaa").is_err()); - assert!(str::parse::<RepresentableKeyEvent>("S-S-a").is_err()); - assert!(str::parse::<RepresentableKeyEvent>("C-A-S-C-1").is_err()); - assert!(str::parse::<RepresentableKeyEvent>("FU").is_err()); - assert!(str::parse::<RepresentableKeyEvent>("123").is_err()); - assert!(str::parse::<RepresentableKeyEvent>("S--").is_err()); - } -} |