92 lines
2.9 KiB
TypeScript
92 lines
2.9 KiB
TypeScript
import { luaBuildStandardEnv } from "$common/space_lua/stdlib.ts";
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import { parsePageRef } from "@silverbulletmd/silverbullet/lib/page_ref";
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import {
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jsToLuaValue,
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LuaBuiltinFunction,
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LuaEnv,
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LuaNativeJSFunction,
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LuaTable,
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} from "$common/space_lua/runtime.ts";
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import type { System } from "$lib/plugos/system.ts";
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import type { ScriptEnvironment } from "$common/space_script.ts";
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export function buildLuaEnv(system: System<any>, scriptEnv: ScriptEnvironment) {
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const env = new LuaEnv(luaBuildStandardEnv());
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// Expose all syscalls to Lua
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for (const syscallName of system.registeredSyscalls.keys()) {
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const [ns, fn] = syscallName.split(".");
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if (!env.get(ns)) {
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env.set(ns, new LuaTable());
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}
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const luaFn = new LuaNativeJSFunction((...args) => {
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return system.localSyscall(syscallName, args);
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});
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// Register the function with the same name as the syscall both in regular and snake_case
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env.get(ns).set(fn, luaFn);
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env.get(ns).set(snakeCase(fn), luaFn);
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}
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// Expose the command registration function to Lua
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env.set(
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"command",
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new LuaBuiltinFunction(
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(def: LuaTable) => {
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if (def.get(1) === undefined) {
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throw new Error("Callback is required");
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}
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if (!def.get("name")) {
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throw new Error("Name is required");
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}
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console.log("Registering Lua command", def.get("name"));
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scriptEnv.registerCommand(
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def.asJSObject() as any,
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async (...args: any[]) => {
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try {
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return await def.get(1).call(
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...args.map(jsToLuaValue),
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);
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} catch (e: any) {
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console.error(
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"Lua eval exception",
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e.message,
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e.context,
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);
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if (e.context && e.context.ref) {
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// We got an error and actually know where it came from, let's navigate there to help debugging
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const pageRef = parsePageRef(e.context.ref);
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await system.localSyscall(
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"editor.flashNotification",
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[
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`Lua error: ${e.message}`,
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"error",
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],
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);
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await system.localSyscall(
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"editor.flashNotification",
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[
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`Navigating to the place in the code where this error occurred in ${pageRef.page}`,
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"info",
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],
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);
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await system.localSyscall("editor.navigate", [
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{
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page: pageRef.page,
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pos: pageRef.pos + e.context.from +
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"```space-lua\n".length,
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},
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]);
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}
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}
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},
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);
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},
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),
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);
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return env;
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}
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function snakeCase(s: string) {
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return s.replace(/([A-Z])/g, "_$1").toLowerCase();
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}
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