refactor(lsp): fewer clones (#17551)

cli/file_fetcher.rs

@@ -154,7 +154,7 @@ fn get_validated_scheme(
 /// the value of a content type header.
 pub fn map_content_type(
   specifier: &ModuleSpecifier,
-  maybe_content_type: Option<String>,
+  maybe_content_type: Option<&String>,
 ) -> (MediaType, Option<String>) {
   if let Some(content_type) = maybe_content_type {
     let mut content_types = content_type.split(';');
@@ -226,7 +226,7 @@ impl FileFetcher {
         .ok_or_else(|| {
           generic_error("Cannot convert specifier to cached filename.")
         })?;
-    let maybe_content_type = headers.get("content-type").cloned();
+    let maybe_content_type = headers.get("content-type");
     let (media_type, maybe_charset) =
       map_content_type(specifier, maybe_content_type);
     let source = get_source_from_bytes(bytes, maybe_charset)?;
@@ -308,8 +308,7 @@ impl FileFetcher {
     }
 
     let (source, content_type) = get_source_from_data_url(specifier)?;
-    let (media_type, _) =
-      map_content_type(specifier, Some(content_type.clone()));
+    let (media_type, _) = map_content_type(specifier, Some(&content_type));
 
     let local =
       self
@@ -372,7 +371,7 @@ impl FileFetcher {
     let bytes = blob.read_all().await?;
 
     let (media_type, maybe_charset) =
-      map_content_type(specifier, Some(content_type.clone()));
+      map_content_type(specifier, Some(&content_type));
     let source = get_source_from_bytes(bytes, maybe_charset)?;
 
     let local =
@@ -1028,7 +1027,7 @@ mod tests {
     for (specifier, maybe_content_type, media_type, maybe_charset) in fixtures {
       let specifier = resolve_url_or_path(specifier).unwrap();
       assert_eq!(
-        map_content_type(&specifier, maybe_content_type),
+        map_content_type(&specifier, maybe_content_type.as_ref()),
         (media_type, maybe_charset)
       );
     }

cli/lsp/completions.rs

@@ -324,7 +324,7 @@ fn get_import_map_completions(
             new_text: label.clone(),
           }));
           items.push(lsp::CompletionItem {
-            label: label.clone(),
+            label,
             kind,
             detail: Some("(import map)".to_string()),
             sort_text: Some("1".to_string()),
@@ -523,12 +523,7 @@ mod tests {
     for (specifier, source, version, language_id) in fixtures {
       let specifier =
         resolve_url(specifier).expect("failed to create specifier");
-      documents.open(
-        specifier.clone(),
-        *version,
-        *language_id,
-        (*source).into(),
-      );
+      documents.open(specifier, *version, *language_id, (*source).into());
     }
     let http_cache = HttpCache::new(location);
     for (specifier, source) in source_fixtures {

cli/lsp/config.rs

@@ -560,8 +560,7 @@ impl Config {
       for (workspace, folder) in workspace_folders {
         if let Ok(settings) = client.specifier_configuration(&folder.uri).await
         {
-          if self.update_enabled_paths_entry(&workspace, settings.enable_paths)
-          {
+          if self.update_enabled_paths_entry(workspace, settings.enable_paths) {
             touched = true;
           }
         }
@@ -569,7 +568,7 @@ impl Config {
       touched
     } else if let Some(root_uri) = self.root_uri.clone() {
       self.update_enabled_paths_entry(
-        &root_uri,
+        root_uri,
         self.settings.workspace.enable_paths.clone(),
       )
     } else {
@@ -580,10 +579,10 @@ impl Config {
   /// Update a specific entry in the enabled paths for a given workspace.
   fn update_enabled_paths_entry(
     &mut self,
-    workspace: &ModuleSpecifier,
+    workspace: ModuleSpecifier,
     enabled_paths: Vec<String>,
   ) -> bool {
-    let workspace = ensure_directory_specifier(workspace.clone());
+    let workspace = ensure_directory_specifier(workspace);
     let key = workspace.to_string();
     let mut touched = false;
     if !enabled_paths.is_empty() {

cli/lsp/documents.rs

@@ -718,8 +718,7 @@ impl FileSystemDocuments {
     } else {
       let cache_filename = cache.get_cache_filename(specifier)?;
       let specifier_metadata = CachedUrlMetadata::read(&cache_filename).ok()?;
-      let maybe_content_type =
-        specifier_metadata.headers.get("content-type").cloned();
+      let maybe_content_type = specifier_metadata.headers.get("content-type");
       let maybe_headers = Some(&specifier_metadata.headers);
       let (_, maybe_charset) = map_content_type(specifier, maybe_content_type);
       let content = get_source_from_bytes(bytes, maybe_charset).ok()?;
@@ -1055,9 +1054,7 @@ impl Documents {
       } else if let Some(Resolved::Ok { specifier, .. }) =
         self.resolve_imports_dependency(&specifier)
       {
-        // clone here to avoid double borrow of self
-        let specifier = specifier.clone();
-        results.push(self.resolve_dependency(&specifier, maybe_npm_resolver));
+        results.push(self.resolve_dependency(specifier, maybe_npm_resolver));
       } else if let Ok(npm_ref) = NpmPackageReference::from_str(&specifier) {
         results.push(maybe_npm_resolver.map(|npm_resolver| {
           NodeResolution::into_specifier_and_media_type(

cli/lsp/language_server.rs

@@ -1528,7 +1528,7 @@ impl Inner {
         .extend(refactor_info.to_code_actions(&specifier, &params.range));
     }
     all_actions.extend(
-      refactor::prune_invalid_actions(&refactor_actions, 5)
+      refactor::prune_invalid_actions(refactor_actions, 5)
         .into_iter()
         .map(CodeActionOrCommand::CodeAction),
     );

cli/lsp/performance.rs

@@ -121,10 +121,11 @@ impl Performance {
     averages
       .into_iter()
       .map(|(k, d)| {
-        let a = d.clone().into_iter().sum::<Duration>() / d.len() as u32;
+        let count = d.len() as u32;
+        let a = d.into_iter().sum::<Duration>() / count;
         PerformanceAverage {
           name: k,
-          count: d.len() as u32,
+          count,
           average_duration: a.as_millis() as u32,
         }
       })

cli/lsp/refactor.rs

@@ -157,7 +157,7 @@ pub struct RefactorCodeActionData {
 }
 
 pub fn prune_invalid_actions(
-  actions: &[lsp::CodeAction],
+  actions: Vec<lsp::CodeAction>,
   number_of_invalid: usize,
 ) -> Vec<lsp::CodeAction> {
   let mut available_actions = Vec::<lsp::CodeAction>::new();
@@ -165,7 +165,7 @@ pub fn prune_invalid_actions(
   let mut invalid_uncommon_actions = Vec::<lsp::CodeAction>::new();
   for action in actions {
     if action.disabled.is_none() {
-      available_actions.push(action.clone());
+      available_actions.push(action);
       continue;
     }
 
@@ -175,12 +175,12 @@ pub fn prune_invalid_actions(
     if action_kind.starts_with(EXTRACT_CONSTANT.kind.as_str())
       || action_kind.starts_with(EXTRACT_FUNCTION.kind.as_str())
     {
-      invalid_common_actions.push(action.clone());
+      invalid_common_actions.push(action);
       continue;
     }
 
     // These are the remaining refactors that we can show if we haven't reached the max limit with just common refactors.
-    invalid_uncommon_actions.push(action.clone());
+    invalid_uncommon_actions.push(action);
   }
 
   let mut prioritized_actions = Vec::<lsp::CodeAction>::new();

cli/lsp/urls.rs

@@ -107,7 +107,7 @@ impl LspUrlMap {
             .map_err(|e| uri_error(format!("{:?}", e)))?;
           let mime = data_url.mime_type();
           let (media_type, _) =
-            map_content_type(specifier, Some(format!("{}", mime)));
+            map_content_type(specifier, Some(&format!("{}", mime)));
           let extension = if media_type == MediaType::Unknown {
             ""
           } else {