update config handling

src/config.rs

@@ -2,6 +2,13 @@ use serde::{Deserialize, Serialize};
 
 #[derive(Clone, Debug, Deserialize, Serialize)]
 pub(crate) struct PluginConfiguration {
-    #[serde(rename = "rustAnalyzer.nightly")]
+    #[serde(rename = "rustAnalyzer")]
+    pub rust_analyzer: Option<RustAnalyzerConfiguration>,
+}
+
+#[derive(Clone, Debug, Deserialize, Serialize)]
+pub struct RustAnalyzerConfiguration {
+    #[serde(default)]
+    #[serde(rename = "nightly")]
     pub nightly: bool,
 }

src/init.rs

@@ -9,15 +9,21 @@ pub(crate) fn initialize_plugin(params: InitializeParams) -> Result<()> {
         .map(|value| serde_json::from_value::<PluginConfiguration>(value))
         .transpose()?;
 
-    if let Some(config) = config {
-        PLUGIN_RPC.window_show_message(
-            MessageType::INFO,
-            format!(
-                "using {} rust-analyzer",
-                if config.nightly { "nightly" } else { "stable" }
-            ),
-        )
-    }
+    let nightly = if let Some(config) = config
+        && let Some(rust_analyzer) = config.rust_analyzer
+    {
+        rust_analyzer.nightly
+    } else {
+        false
+    };
+
+    PLUGIN_RPC.window_show_message(
+        MessageType::INFO,
+        format!(
+            "using {} rust-analyzer",
+            if nightly { "nightly" } else { "stable" }
+        ),
+    );
 
     Ok(())
 }

src/main.rs

@@ -1,3 +1,5 @@
+#![feature(let_chains)]
+
 use lapce_plugin::psp_types::lsp_types::request::Initialize;
 use lapce_plugin::psp_types::lsp_types::{InitializeParams, MessageType};
 use lapce_plugin::psp_types::Request;