CodeAction groups

crates/rust-analyzer/src/config.rs

@@ -102,6 +102,7 @@ pub struct ClientCapsConfig {
     pub hierarchical_symbols: bool,
     pub code_action_literals: bool,
     pub work_done_progress: bool,
+    pub code_action_group: bool,
 }
 
 impl Default for Config {
@@ -294,9 +295,13 @@ impl Config {
 
         self.assist.allow_snippets(false);
         if let Some(experimental) = &caps.experimental {
-            let enable =
+            let snippet_text_edit =
                 experimental.get("snippetTextEdit").and_then(|it| it.as_bool()) == Some(true);
-            self.assist.allow_snippets(enable);
+            self.assist.allow_snippets(snippet_text_edit);
+
+            let code_action_group =
+                experimental.get("codeActionGroup").and_then(|it| it.as_bool()) == Some(true);
+            self.client_caps.code_action_group = code_action_group
         }
     }
 }

crates/rust-analyzer/src/diagnostics/snapshots/rust_analyzer__diagnostics__to_proto__tests__snap_multi_line_fix.snap

@@ -65,6 +65,7 @@ expression: diag
         fixes: [
             CodeAction {
                 title: "return the expression directly",
+                group: None,
                 kind: Some(
                     "quickfix",
                 ),

crates/rust-analyzer/src/diagnostics/snapshots/rust_analyzer__diagnostics__to_proto__tests__snap_rustc_unused_variable.snap

@@ -50,6 +50,7 @@ expression: diag
         fixes: [
             CodeAction {
                 title: "consider prefixing with an underscore",
+                group: None,
                 kind: Some(
                     "quickfix",
                 ),

crates/rust-analyzer/src/diagnostics/to_proto.rs

@@ -145,6 +145,7 @@ fn map_rust_child_diagnostic(
     } else {
         MappedRustChildDiagnostic::SuggestedFix(lsp_ext::CodeAction {
             title: rd.message.clone(),
+            group: None,
             kind: Some("quickfix".to_string()),
             edit: Some(lsp_ext::SnippetWorkspaceEdit {
                 // FIXME: there's no good reason to use edit_map here....

crates/rust-analyzer/src/lsp_ext.rs

@@ -133,14 +133,6 @@ pub struct Runnable {
     pub cwd: Option<PathBuf>,
 }
 
-#[derive(Deserialize, Serialize, Debug)]
-#[serde(rename_all = "camelCase")]
-pub struct SourceChange {
-    pub label: String,
-    pub workspace_edit: SnippetWorkspaceEdit,
-    pub cursor_position: Option<lsp_types::TextDocumentPositionParams>,
-}
-
 pub enum InlayHints {}
 
 impl Request for InlayHints {
@@ -196,6 +188,8 @@ impl Request for CodeActionRequest {
 pub struct CodeAction {
     pub title: String,
     #[serde(skip_serializing_if = "Option::is_none")]
+    pub group: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub kind: Option<String>,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub command: Option<lsp_types::Command>,

crates/rust-analyzer/src/main_loop/handlers.rs

@@ -18,7 +18,7 @@ use lsp_types::{
     SemanticTokensResult, SymbolInformation, TextDocumentIdentifier, Url, WorkspaceEdit,
 };
 use ra_ide::{
-    Assist, FileId, FilePosition, FileRange, Query, RangeInfo, Runnable, RunnableKind, SearchScope,
+    FileId, FilePosition, FileRange, Query, RangeInfo, Runnable, RunnableKind, SearchScope,
     TextEdit,
 };
 use ra_prof::profile;
@@ -720,6 +720,7 @@ pub fn handle_code_action(
     let file_id = from_proto::file_id(&world, &params.text_document.uri)?;
     let line_index = world.analysis().file_line_index(file_id)?;
     let range = from_proto::text_range(&line_index, params.range);
+    let frange = FileRange { file_id, range };
 
     let diagnostics = world.analysis().diagnostics(file_id)?;
     let mut res: Vec<lsp_ext::CodeAction> = Vec::new();
@@ -733,7 +734,8 @@ pub fn handle_code_action(
     for source_edit in fixes_from_diagnostics {
         let title = source_edit.label.clone();
         let edit = to_proto::snippet_workspace_edit(&world, source_edit)?;
-        let action = lsp_ext::CodeAction { title, kind: None, edit: Some(edit), command: None };
+        let action =
+            lsp_ext::CodeAction { title, group: None, kind: None, edit: Some(edit), command: None };
         res.push(action);
     }
 
@@ -745,53 +747,9 @@ pub fn handle_code_action(
         res.push(fix.action.clone());
     }
 
-    let mut grouped_assists: FxHashMap<String, (usize, Vec<Assist>)> = FxHashMap::default();
-    for assist in
-        world.analysis().assists(&world.config.assist, FileRange { file_id, range })?.into_iter()
-    {
-        match &assist.group_label {
-            Some(label) => grouped_assists
-                .entry(label.to_owned())
-                .or_insert_with(|| {
-                    let idx = res.len();
-                    let dummy = lsp_ext::CodeAction {
-                        title: String::new(),
-                        kind: None,
-                        command: None,
-                        edit: None,
-                    };
-                    res.push(dummy);
-                    (idx, Vec::new())
-                })
-                .1
-                .push(assist),
-            None => {
-                res.push(to_proto::code_action(&world, assist)?.into());
-            }
-        }
+    for assist in world.analysis().assists(&world.config.assist, frange)?.into_iter() {
+        res.push(to_proto::code_action(&world, assist)?.into());
     }
-
-    for (group_label, (idx, assists)) in grouped_assists {
-        if assists.len() == 1 {
-            res[idx] = to_proto::code_action(&world, assists.into_iter().next().unwrap())?.into();
-        } else {
-            let title = group_label;
-
-            let mut arguments = Vec::with_capacity(assists.len());
-            for assist in assists {
-                let source_change = to_proto::source_change(&world, assist.source_change)?;
-                arguments.push(to_value(source_change)?);
-            }
-
-            let command = Some(Command {
-                title: title.clone(),
-                command: "rust-analyzer.selectAndApplySourceChange".to_string(),
-                arguments: Some(vec![serde_json::Value::Array(arguments)]),
-            });
-            res[idx] = lsp_ext::CodeAction { title, kind: None, edit: None, command };
-        }
-    }
-
     Ok(Some(res))
 }
 

crates/rust-analyzer/src/to_proto.rs

@@ -478,15 +478,6 @@ pub(crate) fn resource_op(
     Ok(res)
 }
 
-pub(crate) fn source_change(
-    world: &WorldSnapshot,
-    source_change: SourceChange,
-) -> Result<lsp_ext::SourceChange> {
-    let label = source_change.label.clone();
-    let workspace_edit = self::snippet_workspace_edit(world, source_change)?;
-    Ok(lsp_ext::SourceChange { label, workspace_edit, cursor_position: None })
-}
-
 pub(crate) fn snippet_workspace_edit(
     world: &WorldSnapshot,
     source_change: SourceChange,
@@ -606,6 +597,7 @@ fn main() <fold>{
 pub(crate) fn code_action(world: &WorldSnapshot, assist: Assist) -> Result<lsp_ext::CodeAction> {
     let res = lsp_ext::CodeAction {
         title: assist.label,
+        group: if world.config.client_caps.code_action_group { assist.group_label } else { None },
         kind: Some(String::new()),
         edit: Some(snippet_workspace_edit(world, assist.source_change)?),
         command: None,