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Edits with cursors

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This commit is contained in:
Aleksey Kladov 2018-08-15 23:24:20 +03:00
parent a7d31b55a4
commit aa0d344581
5 changed files with 85 additions and 37 deletions
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29
crates/libeditor/src/code_actions.rs
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@ -10,7 +10,17 @@ use libsyntax2::{
},
};
pub fn flip_comma<'a>(file: &'a File, offset: TextUnit) -> Option<impl FnOnce() -> Edit + 'a> {
pub struct ActionResult {
pub edit: Edit,
pub cursor_position: CursorPosition,
}
pub enum CursorPosition {
Same,
Offset(TextUnit),
}
pub fn flip_comma<'a>(file: &'a File, offset: TextUnit) -> Option<impl FnOnce() -> ActionResult + 'a> {
let syntax = file.syntax();
let syntax = syntax.as_ref();
@ -21,18 +31,27 @@ pub fn flip_comma<'a>(file: &'a File, offset: TextUnit) -> Option<impl FnOnce()
let mut edit = EditBuilder::new();
edit.replace(left.range(), right.text());
edit.replace(right.range(), left.text());
edit.finish()
ActionResult {
edit: edit.finish(),
cursor_position: CursorPosition::Same,
}
})
}
pub fn add_derive<'a>(file: &'a File, offset: TextUnit) -> Option<impl FnOnce() -> Edit + 'a> {
pub fn add_derive<'a>(file: &'a File, offset: TextUnit) -> Option<impl FnOnce() -> ActionResult + 'a> {
let syntax = file.syntax();
let syntax = syntax.as_ref();
let nominal = find_node::<ast::NominalDef<_>>(syntax, offset)?;
Some(move || {
let mut edit = EditBuilder::new();
edit.insert(nominal.syntax().range().start(), "#[derive()]\n".to_string());
edit.finish()
let node_start = nominal.syntax().range().start();
edit.insert(node_start, "#[derive()]\n".to_string());
ActionResult {
edit: edit.finish(),
cursor_position: CursorPosition::Offset(
node_start + TextUnit::of_str("#[derive(")
),
}
})
}