bendns' repos / helix
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'helix-view/src/keymap/macros.rs')
-rw-r--r--helix-view/src/keymap/macros.rs60
1 files changed, 60 insertions, 0 deletions
diff --git a/helix-view/src/keymap/macros.rs b/helix-view/src/keymap/macros.rs
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+++ b/helix-view/src/keymap/macros.rs
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+/// 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 = $key.parse::<$crate::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 crate::{alt, ctrl, key, shift};
+pub use keymap;