Parameterize code lens highlight group (#1100)

Author: martskins

doc/LanguageClient.txt

@@ -604,7 +604,7 @@ Full path to languageclient binary.
 Default: 'bin/languageclient' relative to plugin root.
 Valid options: String
 
-2.39 g:LanguageClient_enableExtensions          *g:LanguageClient_enableExtensions*
+2.40 g:LanguageClient_enableExtensions          *g:LanguageClient_enableExtensions*
 
 LanguageClient-neovim provides extensions for some language servers, such as gopls or rust-analyzer.
 These extensions can be turned on or off, and they are configurable per language (not per language
@@ -629,6 +629,12 @@ The default value for this config, or the absence of this config, enables extens
 
 Default: v:null
 
+2.41 g:LanguageClient_codeLensHighlightGroup          *g:LanguageClient_codeLensHighlightGroup*
+
+Highlight group to be used for code lens.
+
+Default: 'Comment'
+
 ==============================================================================
 3. Commands                                           *LanguageClientCommands*
 

src/language_server_protocol.rs

@@ -178,6 +178,7 @@ impl LanguageClient {
             preferred_markup_kind,
             hide_virtual_texts_on_insert,
             enable_extensions,
+            code_lens_hl_group,
         ): (
             Option<usize>,
             String,
@@ -192,6 +193,7 @@ impl LanguageClient {
             Option<Vec<MarkupKind>>,
             u8,
             Option<HashMap<String, bool>>,
+            String,
         ) = self.vim()?.eval(
             [
                 "get(g:, 'LanguageClient_diagnosticsSignsMax', v:null)",
@@ -207,6 +209,7 @@ impl LanguageClient {
                 "get(g:, 'LanguageClient_preferredMarkupKind', v:null)",
                 "s:GetVar('LanguageClient_hideVirtualTextsOnInsert', 0)",
                 "get(g:, 'LanguageClient_enableExtensions', v:null)",
+                "get(g:, 'LanguageClient_codeLensHighlightGroup', 'Comment')",
             ]
             .as_ref(),
         )?;
@@ -324,6 +327,7 @@ impl LanguageClient {
             state.is_nvim = is_nvim;
             state.preferred_markup_kind = preferred_markup_kind;
             state.enable_extensions = enable_extensions;
+            state.code_lens_hl_group = code_lens_hl_group;
             Ok(())
         })?;
 
@@ -3379,6 +3383,7 @@ impl LanguageClient {
         let mut virtual_texts = vec![];
         let code_lenses =
             self.get(|state| state.code_lens.get(filename).cloned().unwrap_or_default())?;
+        let code_lens_hl_group = self.get(|state| state.code_lens_hl_group.clone())?;
 
         for cl in code_lenses {
             if let Some(command) = cl.command {
@@ -3395,7 +3400,7 @@ impl LanguageClient {
                     None => virtual_texts.push(VirtualText {
                         line,
                         text,
-                        hl_group: "Comment".into(),
+                        hl_group: code_lens_hl_group.clone(),
                     }),
                 }
             }

src/types.rs

@@ -159,6 +159,7 @@ pub struct State {
     pub diagnostics: HashMap<String, Vec<Diagnostic>>,
     // filename => codeLens.
     pub code_lens: HashMap<String, Vec<CodeLens>>,
+    pub code_lens_hl_group: String,
     #[serde(skip_serializing)]
     pub line_diagnostics: HashMap<(String, u64), String>,
     /// Active signs.
@@ -294,6 +295,7 @@ impl State {
             server_stderr: None,
             preferred_markup_kind: None,
             enable_extensions: None,
+            code_lens_hl_group: "Comment".into(),
 
             logger,
         })