Get clangd working for C/C++/Objective-C

backend/src/api.ts

@@ -250,7 +250,9 @@ export class Session {
       this.lsp.reader.listen((data) => {
         this.ws.send(JSON.stringify({ event: "lspOutput", output: data }));
       });
-      this.ws.send(JSON.stringify({ event: "lspStarted" }));
+      this.ws.send(
+        JSON.stringify({ event: "lspStarted", root: `/tmp/riju/${this.uuid}` })
+      );
     }
   };
   cleanup = async () => {

backend/src/langs.ts

@@ -147,6 +147,7 @@ implement main0 () = ()
     main: "main.c",
     compile: "clang -Wall -Wextra main.c -o main",
     run: "./main",
+    lsp: "clangd",
     template: `#include <stdio.h>
 
 int main() {

frontend/src/app.ts

@@ -22,6 +22,7 @@ const DEBUG = window.location.hash === "#debug";
 interface RijuConfig {
   id: string;
   monacoLang: string;
+  main: string;
   lspInit?: any;
   lspConfig?: any;
   template: string;
@@ -151,6 +152,17 @@ async function main() {
           term.write(message.output);
           return;
         case "lspStarted":
+          if (typeof message.root !== "string") {
+            console.error("Unexpected message from server:", message);
+            return;
+          }
+          editor.setModel(
+            monaco.editor.createModel(
+              editor.getModel()!.getValue(),
+              undefined,
+              monaco.Uri.parse(`file://${message.root}/${config.main}`)
+            )
+          );
           const connection = createMessageConnection(
             new RijuMessageReader(socket!),
             new RijuMessageWriter(socket!)

scripts/docker-install-phase3a.bash

@@ -30,6 +30,7 @@ beef
 
 # C/C++
 clang
+clangd
 
 # C#
 mono-mcs