Add limit setting

crates/ide-completion/src/config.rs

@@ -19,6 +19,7 @@ pub struct CompletionConfig {
     pub insert_use: InsertUseConfig,
     pub prefer_no_std: bool,
     pub snippets: Vec<Snippet>,
+    pub limit: Option<usize>
 }
 
 #[derive(Clone, Debug, PartialEq, Eq)]

crates/ide-completion/src/tests.rs

@@ -75,6 +75,7 @@ pub(crate) const TEST_CONFIG: CompletionConfig = CompletionConfig {
         skip_glob_imports: true,
     },
     snippets: Vec::new(),
+    limit: None,
 };
 
 pub(crate) fn completion_list(ra_fixture: &str) -> String {

crates/rust-analyzer/src/config.rs

@@ -199,6 +199,8 @@ config_data! {
         completion_postfix_enable: bool         = "true",
         /// Enables completions of private items and fields that are defined in the current workspace even if they are not visible at the current position.
         completion_privateEditable_enable: bool = "false",
+        /// Maximum number of completions to return. If `None`, the limit is infinite.
+        completion_limit: Option<usize> = "null",
         /// Custom completion snippets.
         // NOTE: Keep this list in sync with the feature docs of user snippets.
         completion_snippets_custom: FxHashMap<String, SnippetDef> = r#"{
@@ -1313,6 +1315,7 @@ impl Config {
                     .snippet_support?
             )),
             snippets: self.snippets.clone(),
+            limit: self.data.completion_limit,
         }
     }
 

crates/rust-analyzer/src/integrated_benchmarks.rs

@@ -146,6 +146,7 @@ fn integrated_completion_benchmark() {
             },
             snippets: Vec::new(),
             prefer_no_std: false,
+            limit: None
         };
         let position =
             FilePosition { file_id, offset: TextSize::try_from(completion_offset).unwrap() };
@@ -184,6 +185,7 @@ fn integrated_completion_benchmark() {
             },
             snippets: Vec::new(),
             prefer_no_std: false,
+            limit: None
         };
         let position =
             FilePosition { file_id, offset: TextSize::try_from(completion_offset).unwrap() };