feat: add lsp config support (#24)

Author: azeier

src/language_servers/scss_lsp.rs

@@ -1,6 +1,6 @@
 use std::{env, fs};
 
-use zed_extension_api::{self as zed, LanguageServerId, Result};
+use zed_extension_api::{self as zed, settings::LspSettings, LanguageServerId, Result};
 
 const SERVER_PATH: &str =
     "node_modules/vscode-langservers-extracted/bin/vscode-css-language-server";
@@ -90,4 +90,30 @@ impl SCSSLsp {
         self.did_find_server = true;
         Ok(SERVER_PATH.to_string())
     }
+
+    pub fn language_server_initialization_options(
+        &mut self,
+        language_server_id: &LanguageServerId,
+        worktree: &zed::Worktree,
+    ) -> Result<Option<zed::serde_json::Value>> {
+        let options = LspSettings::for_worktree(language_server_id.as_ref(), worktree)
+            .ok()
+            .and_then(|lsp_settings| lsp_settings.initialization_options);
+        Ok(options)
+    }
+
+    pub fn language_server_workspace_configuration(
+        &mut self,
+        language_server_id: &LanguageServerId,
+        worktree: &zed::Worktree,
+    ) -> Result<Option<zed::serde_json::Value>> {
+        if let Ok(Some(settings)) = LspSettings::for_worktree(language_server_id.as_ref(), worktree)
+            .map(|lsp_settings| lsp_settings.settings)
+        {
+            Ok(Some(settings))
+        } else {
+            self.language_server_initialization_options(language_server_id, worktree)
+                .map(|init_options| init_options.and_then(|opts| opts.get("settings").cloned()))
+        }
+    }
 }

src/language_servers/some_sass.rs

@@ -1,6 +1,6 @@
 use std::{env, fs};
 
-use zed_extension_api::{self as zed, LanguageServerId, Result};
+use zed_extension_api::{self as zed, settings::LspSettings, LanguageServerId, Result};
 
 const SERVER_PATH: &str = "node_modules/some-sass-language-server/bin/some-sass-language-server";
 const PACKAGE_NAME: &str = "some-sass-language-server";
@@ -89,4 +89,30 @@ impl SomeSass {
         self.did_find_server = true;
         Ok(SERVER_PATH.to_string())
     }
+
+    pub fn language_server_initialization_options(
+        &mut self,
+        language_server_id: &LanguageServerId,
+        worktree: &zed::Worktree,
+    ) -> Result<Option<zed::serde_json::Value>> {
+        let options = LspSettings::for_worktree(language_server_id.as_ref(), worktree)
+            .ok()
+            .and_then(|lsp_settings| lsp_settings.initialization_options);
+        Ok(options)
+    }
+
+    pub fn language_server_workspace_configuration(
+        &mut self,
+        language_server_id: &LanguageServerId,
+        worktree: &zed::Worktree,
+    ) -> Result<Option<zed::serde_json::Value>> {
+        if let Ok(Some(settings)) = LspSettings::for_worktree(language_server_id.as_ref(), worktree)
+            .map(|lsp_settings| lsp_settings.settings)
+        {
+            Ok(Some(settings))
+        } else {
+            self.language_server_initialization_options(language_server_id, worktree)
+                .map(|init_options| init_options.and_then(|opts| opts.get("settings").cloned()))
+        }
+    }
 }

src/scss.rs

@@ -34,5 +34,41 @@ impl zed::Extension for SCSSExtension {
             language_server_id => Err(format!("unknown language server: {language_server_id}")),
         }
     }
+
+    fn language_server_initialization_options(
+        &mut self,
+        language_server_id: &LanguageServerId,
+        worktree: &zed::Worktree,
+    ) -> Result<Option<zed::serde_json::Value>> {
+        match language_server_id.as_ref() {
+            SomeSass::LANGUAGE_SERVER_ID => {
+                let some_sass = self.some_sass.get_or_insert_with(|| SomeSass::new());
+                some_sass.language_server_initialization_options(language_server_id, worktree)
+            }
+            SCSSLsp::LANGUAGE_SERVER_ID => {
+                let scss_lsp = self.scss_lsp.get_or_insert_with(|| SCSSLsp::new());
+                scss_lsp.language_server_initialization_options(language_server_id, worktree)
+            }
+            _ => Ok(None),
+        }
+    }
+
+    fn language_server_workspace_configuration(
+        &mut self,
+        language_server_id: &LanguageServerId,
+        worktree: &zed::Worktree,
+    ) -> Result<Option<zed::serde_json::Value>> {
+        match language_server_id.as_ref() {
+            SomeSass::LANGUAGE_SERVER_ID => {
+                let some_sass = self.some_sass.get_or_insert_with(|| SomeSass::new());
+                some_sass.language_server_workspace_configuration(language_server_id, worktree)
+            }
+            SCSSLsp::LANGUAGE_SERVER_ID => {
+                let scss_lsp = self.scss_lsp.get_or_insert_with(|| SCSSLsp::new());
+                scss_lsp.language_server_workspace_configuration(language_server_id, worktree)
+            }
+            _ => Ok(None),
+        }
+    }
 }
 zed::register_extension!(SCSSExtension);