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authorRobin2021-06-12 12:45:21 +0000
committerGitHub2021-06-12 12:45:21 +0000
commit9baf1ecc90117710e785467f59a99ee119f50c73 (patch)
tree3cb091df93ad455b5cca529f578e8df3995486c1 /helix-term/src/commands.rs
parent44cc0d8eb0743101724fca8787217a9d0aa01bd4 (diff)
add symbol picker (#230)
* add symbol picker use the lsp document_symbol request * fix errors from merging in master * add docs for symbol picker
Diffstat (limited to 'helix-term/src/commands.rs')
-rw-r--r--helix-term/src/commands.rs73
1 files changed, 72 insertions, 1 deletions
diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index 0ae2186b..e7823fe1 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -16,7 +16,7 @@ use helix_view::{
use helix_lsp::{
lsp,
- util::{lsp_pos_to_pos, pos_to_lsp_pos, range_to_lsp_range},
+ util::{lsp_pos_to_pos, lsp_range_to_range, pos_to_lsp_pos, range_to_lsp_range},
OffsetEncoding,
};
use movement::Movement;
@@ -1194,6 +1194,76 @@ pub fn buffer_picker(cx: &mut Context) {
cx.push_layer(Box::new(picker));
}
+pub fn symbol_picker(cx: &mut Context) {
+ fn nested_to_flat(
+ list: &mut Vec<lsp::SymbolInformation>,
+ file: &lsp::TextDocumentIdentifier,
+ symbol: lsp::DocumentSymbol,
+ ) {
+ #[allow(deprecated)]
+ list.push(lsp::SymbolInformation {
+ name: symbol.name,
+ kind: symbol.kind,
+ tags: symbol.tags,
+ deprecated: symbol.deprecated,
+ location: lsp::Location::new(file.uri.clone(), symbol.selection_range),
+ container_name: None,
+ });
+ for child in symbol.children.into_iter().flatten() {
+ nested_to_flat(list, file, child);
+ }
+ }
+ let (view, doc) = cx.current();
+
+ let language_server = match doc.language_server() {
+ Some(language_server) => language_server,
+ None => return,
+ };
+ let offset_encoding = language_server.offset_encoding();
+
+ let future = language_server.document_symbols(doc.identifier());
+
+ cx.callback(
+ future,
+ move |editor: &mut Editor,
+ compositor: &mut Compositor,
+ response: Option<lsp::DocumentSymbolResponse>| {
+ if let Some(symbols) = response {
+ // lsp has two ways to represent symbols (flat/nested)
+ // convert the nested variant to flat, so that we have a homogeneous list
+ let symbols = match symbols {
+ lsp::DocumentSymbolResponse::Flat(symbols) => symbols,
+ lsp::DocumentSymbolResponse::Nested(symbols) => {
+ let (_view, doc) = editor.current();
+ let mut flat_symbols = Vec::new();
+ for symbol in symbols {
+ nested_to_flat(&mut flat_symbols, &doc.identifier(), symbol)
+ }
+ flat_symbols
+ }
+ };
+
+ let picker = Picker::new(
+ symbols,
+ |symbol| (&symbol.name).into(),
+ move |editor: &mut Editor, symbol, _action| {
+ push_jump(editor);
+ let (view, doc) = editor.current();
+
+ if let Some(range) =
+ lsp_range_to_range(doc.text(), symbol.location.range, offset_encoding)
+ {
+ doc.set_selection(view.id, Selection::single(range.to(), range.from()));
+ align_view(doc, view, Align::Center);
+ }
+ },
+ );
+ compositor.push(Box::new(picker))
+ }
+ },
+ )
+}
+
// I inserts at the first nonwhitespace character of each line with a selection
pub fn prepend_to_line(cx: &mut Context) {
move_first_nonwhitespace(cx);
@@ -2548,6 +2618,7 @@ pub fn space_mode(cx: &mut Context) {
match ch {
'f' => file_picker(cx),
'b' => buffer_picker(cx),
+ 's' => symbol_picker(cx),
'w' => window_mode(cx),
// ' ' => toggle_alternate_buffer(cx),
// TODO: temporary since space mode took its old key