4 files changed, 6 insertions, 1 deletions

diff --git a/crates/ra_lsp_server/src/config.rs b/crates/ra_lsp_server/src/config.rs
index 9871a3b37..8045f3d60 100644
--- a/crates/ra_lsp_server/src/config.rs
+++ b/crates/ra_lsp_server/src/config.rs
@@ -29,6 +29,8 @@ pub struct ServerConfig {
 
     pub lru_capacity: Option<usize>,
 
+    pub max_inlay_hint_length: Option<usize>,
+
     /// For internal usage to make integrated tests faster.
     #[serde(deserialize_with = "nullable_bool_true")]
     pub with_sysroot: bool,
@@ -44,6 +46,7 @@ impl Default for ServerConfig {
             exclude_globs: Vec::new(),
             use_client_watching: false,
             lru_capacity: None,
+            max_inlay_hint_length: None,
             with_sysroot: true,
             feature_flags: FxHashMap::default(),
         }
diff --git a/crates/ra_lsp_server/src/main_loop.rs b/crates/ra_lsp_server/src/main_loop.rs
index 379dab438..3e2ac3683 100644
--- a/crates/ra_lsp_server/src/main_loop.rs
+++ b/crates/ra_lsp_server/src/main_loop.rs
@@ -123,6 +123,7 @@ pub fn main_loop(
                     .and_then(|it| it.folding_range.as_ref())
                     .and_then(|it| it.line_folding_only)
                     .unwrap_or(false),
+                max_inlay_hint_length: config.max_inlay_hint_length,
             }
         };
 
diff --git a/crates/ra_lsp_server/src/main_loop/handlers.rs b/crates/ra_lsp_server/src/main_loop/handlers.rs
index 20f9aee13..7347a78c7 100644
--- a/crates/ra_lsp_server/src/main_loop/handlers.rs
+++ b/crates/ra_lsp_server/src/main_loop/handlers.rs
@@ -870,7 +870,7 @@ pub fn handle_inlay_hints(
     let analysis = world.analysis();
     let line_index = analysis.file_line_index(file_id)?;
     Ok(analysis
-        .inlay_hints(file_id)?
+        .inlay_hints(file_id, world.options.max_inlay_hint_length)?
         .into_iter()
         .map(|api_type| InlayHint {
             label: api_type.label.to_string(),
diff --git a/crates/ra_lsp_server/src/world.rs b/crates/ra_lsp_server/src/world.rs
index 51824e7a3..9bdea70c7 100644
--- a/crates/ra_lsp_server/src/world.rs
+++ b/crates/ra_lsp_server/src/world.rs
@@ -28,6 +28,7 @@ pub struct Options {
     pub publish_decorations: bool,
     pub supports_location_link: bool,
     pub line_folding_only: bool,
+    pub max_inlay_hint_length: Option<usize>,
 }
 
 /// `WorldState` is the primary mutable state of the language server