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helix-plus/helix-term/src/keymap/macros.rs

128 lines
3.7 KiB
Rust

#[macro_export]
macro_rules! key {
($key:ident) => {
::helix_view::input::KeyEvent {
code: ::helix_view::keyboard::KeyCode::$key,
modifiers: ::helix_view::keyboard::KeyModifiers::NONE,
}
};
($($ch:tt)*) => {
::helix_view::input::KeyEvent {
code: ::helix_view::keyboard::KeyCode::Char($($ch)*),
modifiers: ::helix_view::keyboard::KeyModifiers::NONE,
}
};
}
#[macro_export]
macro_rules! shift {
($key:ident) => {
::helix_view::input::KeyEvent {
code: ::helix_view::keyboard::KeyCode::$key,
modifiers: ::helix_view::keyboard::KeyModifiers::SHIFT,
}
};
($($ch:tt)*) => {
::helix_view::input::KeyEvent {
code: ::helix_view::keyboard::KeyCode::Char($($ch)*),
modifiers: ::helix_view::keyboard::KeyModifiers::SHIFT,
}
};
}
#[macro_export]
macro_rules! ctrl {
($key:ident) => {
::helix_view::input::KeyEvent {
code: ::helix_view::keyboard::KeyCode::$key,
modifiers: ::helix_view::keyboard::KeyModifiers::CONTROL,
}
};
($($ch:tt)*) => {
::helix_view::input::KeyEvent {
code: ::helix_view::keyboard::KeyCode::Char($($ch)*),
modifiers: ::helix_view::keyboard::KeyModifiers::CONTROL,
}
};
}
#[macro_export]
macro_rules! alt {
($key:ident) => {
::helix_view::input::KeyEvent {
code: ::helix_view::keyboard::KeyCode::$key,
modifiers: ::helix_view::keyboard::KeyModifiers::ALT,
}
};
($($ch:tt)*) => {
::helix_view::input::KeyEvent {
code: ::helix_view::keyboard::KeyCode::Char($($ch)*),
modifiers: ::helix_view::keyboard::KeyModifiers::ALT,
}
};
}
/// Macro for defining the root of a `Keymap` object. Example:
///
/// ```
/// # use helix_core::hashmap;
/// # use helix_term::keymap;
/// # use helix_term::keymap::Keymap;
/// let normal_mode = keymap!({ "Normal mode"
/// "i" => insert_mode,
/// "g" => { "Goto"
/// "g" => goto_file_start,
/// "e" => goto_file_end,
/// },
/// "j" | "down" => move_line_down,
/// });
/// let keymap = Keymap::new(normal_mode);
/// ```
#[macro_export]
macro_rules! keymap {
(@trie $cmd:ident) => {
$crate::keymap::KeyTrie::Leaf($crate::commands::MappableCommand::$cmd)
};
(@trie
{ $label:literal $(sticky=$sticky:literal)? $($($key:literal)|+ => $value:tt,)+ }
) => {
keymap!({ $label $(sticky=$sticky)? $($($key)|+ => $value,)+ })
};
(@trie [$($cmd:ident),* $(,)?]) => {
$crate::keymap::KeyTrie::Sequence(vec![$($crate::commands::Command::$cmd),*])
};
(
{ $label:literal $(sticky=$sticky:literal)? $($($key:literal)|+ => $value:tt,)+ }
) => {
// modified from the hashmap! macro
{
let _cap = hashmap!(@count $($($key),+),*);
let mut _map = ::std::collections::HashMap::with_capacity(_cap);
let mut _order = ::std::vec::Vec::with_capacity(_cap);
$(
$(
let _key = $key.parse::<::helix_view::input::KeyEvent>().unwrap();
let _duplicate = _map.insert(
_key,
keymap!(@trie $value)
);
assert!(_duplicate.is_none(), "Duplicate key found: {:?}", _duplicate.unwrap());
_order.push(_key);
)+
)*
let mut _node = $crate::keymap::KeyTrieNode::new($label, _map, _order);
$( _node.is_sticky = $sticky; )?
$crate::keymap::KeyTrie::Node(_node)
}
};
}
pub use alt;
pub use ctrl;
pub use key;
pub use keymap;
pub use shift;