From d9d59cd209c9cbd1397ed4d05b1d14a6aad514bf Mon Sep 17 00:00:00 2001 From: Blaž Hrastnik Date: Thu, 1 Oct 2020 16:06:42 +0900 Subject: Simplify keymap.rs with macros --- helix-view/src/keymap.rs | 132 ++++++++++++++++------------------------------- 1 file changed, 44 insertions(+), 88 deletions(-) (limited to 'helix-view/src') diff --git a/helix-view/src/keymap.rs b/helix-view/src/keymap.rs index 512dcbdb..c5bce85a 100644 --- a/helix-view/src/keymap.rs +++ b/helix-view/src/keymap.rs @@ -90,98 +90,54 @@ pub use crossterm::event::{KeyCode, KeyEvent as Key, KeyModifiers as Modifiers}; type Keymap = HashMap, Command>; type Keymaps = HashMap; +macro_rules! key { + ($ch:expr) => { + Key { + code: KeyCode::Char($ch), + modifiers: Modifiers::NONE, + } + }; +} + +macro_rules! shift { + ($ch:expr) => { + Key { + code: KeyCode::Char($ch), + modifiers: Modifiers::SHIFT, + } + }; +} + pub fn default() -> Keymaps { hashmap!( state::Mode::Normal => + // as long as you cast the first item, rust is able to infer the other cases hashmap!( - vec![Key { - code: KeyCode::Char('h'), - modifiers: Modifiers::NONE - }] => commands::move_char_left as Command, - vec![Key { - code: KeyCode::Char('j'), - modifiers: Modifiers::NONE - }] => commands::move_line_down as Command, - vec![Key { - code: KeyCode::Char('k'), - modifiers: Modifiers::NONE - }] => commands::move_line_up as Command, - vec![Key { - code: KeyCode::Char('0'), - modifiers: Modifiers::NONE - }] => commands::move_line_start as Command, - vec![Key { - code: KeyCode::Char('$'), - modifiers: Modifiers::NONE - }] => commands::move_line_end as Command, - vec![Key { - code: KeyCode::Char('l'), - modifiers: Modifiers::NONE - }] => commands::move_char_right as Command, - vec![Key { - code: KeyCode::Char('H'), - modifiers: Modifiers::SHIFT - }] => commands::extend_char_left as Command, - vec![Key { - code: KeyCode::Char('J'), - modifiers: Modifiers::SHIFT - }] => commands::extend_line_down as Command, - vec![Key { - code: KeyCode::Char('K'), - modifiers: Modifiers::SHIFT - }] => commands::extend_line_up as Command, - vec![Key { - code: KeyCode::Char('L'), - modifiers: Modifiers::SHIFT - }] => commands::extend_char_right as Command, - vec![Key { - code: KeyCode::Char('w'), - modifiers: Modifiers::NONE - }] => commands::move_next_word_start as Command, - vec![Key { - code: KeyCode::Char('b'), - modifiers: Modifiers::NONE - }] => commands::move_prev_word_start as Command, - vec![Key { - code: KeyCode::Char('e'), - modifiers: Modifiers::NONE - }] => commands::move_next_word_end as Command, - vec![Key { - code: KeyCode::Char('i'), - modifiers: Modifiers::NONE - }] => commands::insert_mode as Command, - vec![Key { - code: KeyCode::Char('I'), - modifiers: Modifiers::SHIFT, - }] => commands::prepend_to_line as Command, - vec![Key { - code: KeyCode::Char('a'), - modifiers: Modifiers::NONE - }] => commands::append_mode as Command, - vec![Key { - code: KeyCode::Char('A'), - modifiers: Modifiers::SHIFT, - }] => commands::append_to_line as Command, - vec![Key { - code: KeyCode::Char('o'), - modifiers: Modifiers::NONE - }] => commands::open_below as Command, - vec![Key { - code: KeyCode::Char('d'), - modifiers: Modifiers::NONE - }] => commands::delete_selection as Command, - vec![Key { - code: KeyCode::Char('c'), - modifiers: Modifiers::NONE - }] => commands::change_selection as Command, - vec![Key { - code: KeyCode::Char('s'), - modifiers: Modifiers::NONE - }] => commands::split_selection_on_newline as Command, + vec![key!('h')] => commands::move_char_left as Command, + vec![key!('j')] => commands::move_line_down, + vec![key!('k')] => commands::move_line_up, + vec![key!('0')] => commands::move_line_start, + vec![key!('$')] => commands::move_line_end, + vec![key!('l')] => commands::move_char_right, + vec![shift!('H')] => commands::extend_char_left, + vec![shift!('J')] => commands::extend_line_down, + vec![shift!('K')] => commands::extend_line_up, + vec![shift!('L')] => commands::extend_char_right, + vec![key!('w')] => commands::move_next_word_start, + vec![key!('b')] => commands::move_prev_word_start, + vec![key!('e')] => commands::move_next_word_end, + vec![key!('i')] => commands::insert_mode, + vec![shift!('I')] => commands::prepend_to_line, + vec![key!('a')] => commands::append_mode, + vec![shift!('A')] => commands::append_to_line, + vec![key!('o')] => commands::open_below, + vec![key!('d')] => commands::delete_selection, + vec![key!('c')] => commands::change_selection, + vec![key!('s')] => commands::split_selection_on_newline, vec![Key { code: KeyCode::Esc, modifiers: Modifiers::NONE - }] => commands::normal_mode as Command, + }] => commands::normal_mode, ), state::Mode::Insert => hashmap!( vec![Key { @@ -191,15 +147,15 @@ pub fn default() -> Keymaps { vec![Key { code: KeyCode::Backspace, modifiers: Modifiers::NONE - }] => commands::delete_char_backward as Command, + }] => commands::delete_char_backward, vec![Key { code: KeyCode::Delete, modifiers: Modifiers::NONE - }] => commands::delete_char_forward as Command, + }] => commands::delete_char_forward, vec![Key { code: KeyCode::Enter, modifiers: Modifiers::NONE - }] => commands::insert_newline as Command, + }] => commands::insert_newline, ) ) } -- cgit v1.2.3-70-g09d2