4 files changed, 3 insertions, 87 deletions

diff --git a/crates/rust-analyzer/src/config.rs b/crates/rust-analyzer/src/config.rs
index 3c8f55f1e..602423919 100644
--- a/crates/rust-analyzer/src/config.rs
+++ b/crates/rust-analyzer/src/config.rs
@@ -16,7 +16,6 @@ use serde::Deserialize;
 #[derive(Debug, Clone)]
 pub struct Config {
     pub client_caps: ClientCapsConfig,
-    pub publish_decorations: bool,
     pub publish_diagnostics: bool,
     pub notifications: NotificationsConfig,
     pub inlay_hints: InlayHintsConfig,
@@ -60,7 +59,6 @@ pub struct ClientCapsConfig {
 impl Default for Config {
     fn default() -> Self {
         Config {
-            publish_decorations: false,
             publish_diagnostics: true,
             notifications: NotificationsConfig {
                 workspace_loaded: true,
@@ -105,7 +103,6 @@ impl Config {
         *self = Default::default();
         self.client_caps = client_caps;
 
-        set(value, "/publishDecorations", &mut self.publish_decorations);
         set(value, "/excludeGlobs", &mut self.exclude_globs);
         set(value, "/useClientWatching", &mut self.use_client_watching);
         set(value, "/lruCapacity", &mut self.lru_capacity);
diff --git a/crates/rust-analyzer/src/main_loop.rs b/crates/rust-analyzer/src/main_loop.rs
index 45ae0ad9d..47fef59d4 100644
--- a/crates/rust-analyzer/src/main_loop.rs
+++ b/crates/rust-analyzer/src/main_loop.rs
@@ -250,9 +250,7 @@ impl fmt::Debug for Event {
                 }
             }
             Event::Task(Task::Notify(not)) => {
-                if notification_is::<req::PublishDecorations>(not)
-                    || notification_is::<req::PublishDiagnostics>(not)
-                {
+                if notification_is::<req::PublishDiagnostics>(not) {
                     return debug_verbose_not(not, f);
                 }
             }
@@ -427,7 +425,6 @@ fn loop_turn(
         update_file_notifications_on_threadpool(
             pool,
             world_state.snapshot(),
-            world_state.config.publish_decorations,
             task_sender.clone(),
             loop_state.subscriptions.subscriptions(),
         )
@@ -508,7 +505,6 @@ fn on_request(
         .on::<req::GotoTypeDefinition>(handlers::handle_goto_type_definition)?
         .on::<req::ParentModule>(handlers::handle_parent_module)?
         .on::<req::Runnables>(handlers::handle_runnables)?
-        .on::<req::DecorationsRequest>(handlers::handle_decorations)?
         .on::<req::Completion>(handlers::handle_completion)?
         .on::<req::CodeActionRequest>(handlers::handle_code_action)?
         .on::<req::CodeLensRequest>(handlers::handle_code_lens)?
@@ -884,7 +880,6 @@ where
 fn update_file_notifications_on_threadpool(
     pool: &ThreadPool,
     world: WorldSnapshot,
-    publish_decorations: bool,
     task_sender: Sender<Task>,
     subscriptions: Vec<FileId>,
 ) {
@@ -904,19 +899,6 @@ fn update_file_notifications_on_threadpool(
                     }
                 }
             }
-            if publish_decorations {
-                match handlers::publish_decorations(&world, file_id) {
-                    Err(e) => {
-                        if !is_canceled(&e) {
-                            log::error!("failed to compute decorations: {:?}", e);
-                        }
-                    }
-                    Ok(params) => {
-                        let not = notification_new::<req::PublishDecorations>(params);
-                        task_sender.send(Task::Notify(not)).unwrap();
-                    }
-                }
-            }
         }
     });
 }
diff --git a/crates/rust-analyzer/src/main_loop/handlers.rs b/crates/rust-analyzer/src/main_loop/handlers.rs
index 23e48c089..db620dca3 100644
--- a/crates/rust-analyzer/src/main_loop/handlers.rs
+++ b/crates/rust-analyzer/src/main_loop/handlers.rs
@@ -38,7 +38,7 @@ use crate::{
     },
     diagnostics::DiagnosticTask,
     from_json,
-    req::{self, Decoration, InlayHint, InlayHintsParams},
+    req::{self, InlayHint, InlayHintsParams},
     semantic_tokens::SemanticTokensBuilder,
     world::WorldSnapshot,
     LspError, Result,
@@ -389,15 +389,6 @@ pub fn handle_runnables(
     Ok(res)
 }
 
-pub fn handle_decorations(
-    world: WorldSnapshot,
-    params: TextDocumentIdentifier,
-) -> Result<Vec<Decoration>> {
-    let _p = profile("handle_decorations");
-    let file_id = params.try_conv_with(&world)?;
-    highlight(&world, file_id)
-}
-
 pub fn handle_completion(
     world: WorldSnapshot,
     params: req::CompletionParams,
@@ -970,15 +961,6 @@ pub fn publish_diagnostics(world: &WorldSnapshot, file_id: FileId) -> Result<Dia
     Ok(DiagnosticTask::SetNative(file_id, diagnostics))
 }
 
-pub fn publish_decorations(
-    world: &WorldSnapshot,
-    file_id: FileId,
-) -> Result<req::PublishDecorationsParams> {
-    let _p = profile("publish_decorations");
-    let uri = world.file_id_to_uri(file_id)?;
-    Ok(req::PublishDecorationsParams { uri, decorations: highlight(&world, file_id)? })
-}
-
 fn to_lsp_runnable(
     world: &WorldSnapshot,
     file_id: FileId,
@@ -1008,21 +990,6 @@ fn to_lsp_runnable(
     })
 }
 
-fn highlight(world: &WorldSnapshot, file_id: FileId) -> Result<Vec<Decoration>> {
-    let line_index = world.analysis().file_line_index(file_id)?;
-    let res = world
-        .analysis()
-        .highlight(file_id)?
-        .into_iter()
-        .map(|h| Decoration {
-            range: h.range.conv_with(&line_index),
-            tag: h.highlight.to_string(),
-            binding_hash: h.binding_hash.map(|x| x.to_string()),
-        })
-        .collect();
-    Ok(res)
-}
-
 pub fn handle_inlay_hints(
     world: WorldSnapshot,
     params: InlayHintsParams,
diff --git a/crates/rust-analyzer/src/req.rs b/crates/rust-analyzer/src/req.rs
index 994f0ed61..ce799a683 100644
--- a/crates/rust-analyzer/src/req.rs
+++ b/crates/rust-analyzer/src/req.rs
@@ -1,6 +1,6 @@
 //! Defines `rust-analyzer` specific custom messages.
 
-use lsp_types::{Location, Position, Range, TextDocumentIdentifier, Url};
+use lsp_types::{Location, Position, Range, TextDocumentIdentifier};
 use rustc_hash::FxHashMap;
 use serde::{Deserialize, Serialize};
 
@@ -86,36 +86,6 @@ pub struct FindMatchingBraceParams {
     pub offsets: Vec<Position>,
 }
 
-pub enum DecorationsRequest {}
-
-impl Request for DecorationsRequest {
-    type Params = TextDocumentIdentifier;
-    type Result = Vec<Decoration>;
-    const METHOD: &'static str = "rust-analyzer/decorationsRequest";
-}
-
-pub enum PublishDecorations {}
-
-impl Notification for PublishDecorations {
-    type Params = PublishDecorationsParams;
-    const METHOD: &'static str = "rust-analyzer/publishDecorations";
-}
-
-#[derive(Deserialize, Serialize, Debug)]
-#[serde(rename_all = "camelCase")]
-pub struct PublishDecorationsParams {
-    pub uri: Url,
-    pub decorations: Vec<Decoration>,
-}
-
-#[derive(Deserialize, Serialize, Debug)]
-#[serde(rename_all = "camelCase")]
-pub struct Decoration {
-    pub range: Range,
-    pub tag: String,
-    pub binding_hash: Option<String>,
-}
-
 pub enum ParentModule {}
 
 impl Request for ParentModule {