Refactor: Merging common/ into web/

web/space_lua_api.ts

@@ -0,0 +1,90 @@
+import { luaBuildStandardEnv } from "./space_lua/stdlib.ts";
+import { parseRef } from "@silverbulletmd/silverbullet/lib/page_ref";
+import {
+  LuaEnv,
+  LuaNativeJSFunction,
+  type LuaRuntimeError,
+  LuaStackFrame,
+  LuaTable,
+} from "./space_lua/runtime.ts";
+import type { System } from "$lib/plugos/system.ts";
+
+export function buildLuaEnv(system: System<any>) {
+  const env = new LuaEnv(luaBuildStandardEnv());
+
+  // Expose all syscalls to Lua
+  exposeSyscalls(env, system);
+
+  return env;
+}
+
+function exposeSyscalls(env: LuaEnv, system: System<any>) {
+  // Expose all syscalls to Lua
+  const nativeFs = new LuaStackFrame(env, null);
+  for (const syscallName of system.registeredSyscalls.keys()) {
+    const [ns, fn] = syscallName.split(".");
+    if (!env.has(ns)) {
+      env.set(ns, new LuaTable(), nativeFs);
+    }
+    const luaFn = new LuaNativeJSFunction((...args) => {
+      return system.localSyscall(syscallName, args);
+    });
+    env.get(ns, nativeFs).set(fn, luaFn, nativeFs);
+  }
+}
+
+export async function buildThreadLocalEnv(
+  system: System<any>,
+  globalEnv: LuaEnv,
+) {
+  const tl = new LuaEnv();
+  if (system.registeredSyscalls.has("editor.getCurrentPageMeta")) {
+    const currentPageMeta = await system.localSyscall(
+      "editor.getCurrentPageMeta",
+      [],
+    );
+    if (currentPageMeta) {
+      tl.setLocal("currentPage", currentPageMeta);
+    } else {
+      tl.setLocal("currentPage", {
+        name: await system.localSyscall("editor.getCurrentPage", []),
+      });
+    }
+  }
+  tl.setLocal("_GLOBAL", globalEnv);
+  return tl;
+}
+
+export async function handleLuaError(e: LuaRuntimeError, system: System<any>) {
+  console.error(
+    "Lua eval exception",
+    e.message,
+    e.sf?.astCtx,
+  );
+  if (e.sf?.astCtx && e.sf.astCtx.ref) {
+    // We got an error and actually know where it came from, let's navigate there to help debugging
+    const pageRef = parseRef(e.sf.astCtx.ref);
+    await system.localSyscall(
+      "editor.flashNotification",
+      [
+        `Lua error: ${e.message}`,
+        "error",
+      ],
+    );
+    await system.localSyscall(
+      "editor.flashNotification",
+      [
+        `Navigating to the place in the code where this error occurred in ${pageRef.page}`,
+        "info",
+      ],
+    );
+    await system.localSyscall("editor.navigate", [
+      {
+        page: pageRef.page,
+        pos: (typeof pageRef.pos === "number" ? pageRef.pos : 0) +
+          (e.sf.astCtx?.from ?? 0) +
+          "```space-lua\n".length,
+      },
+    ]);
+  }
+}