Files
plainleaf/client/space_lua.ts
T

91 lines
2.7 KiB
TypeScript

import type { System } from "./plugos/system.ts";
import type { SpaceLuaObject } from "../plugs/index/space_lua.ts";
import { LuaEnv, LuaRuntimeError, LuaStackFrame } from "./space_lua/runtime.ts";
import { parse as parseLua, parseExpressionString } from "./space_lua/parse.ts";
import { evalStatement } from "./space_lua/eval.ts";
import {
encodeRef,
parseToRef,
type Ref,
} from "@silverbulletmd/silverbullet/lib/ref";
import type { ASTCtx } from "./space_lua/ast.ts";
import { buildLuaEnv } from "./space_lua_api.ts";
import type { LuaCollectionQuery } from "./space_lua/query_collection.ts";
export class SpaceLuaEnvironment {
env: LuaEnv;
constructor(private system: System<any>) {
this.env = buildLuaEnv(system);
}
/**
* Loads all Lua scripts from the database and evaluates them in a new environment
* @param system
*/
async reload() {
const allScripts: SpaceLuaObject[] = await this.system.invokeFunction(
"index.queryLuaObjects",
["space-lua", {
objectVariable: "script",
orderBy: [{
expr: parseExpressionString("script.priority"),
desc: true,
}],
} as LuaCollectionQuery],
);
try {
this.env = buildLuaEnv(this.system);
const tl = new LuaEnv();
tl.setLocal("_GLOBAL", this.env);
for (const script of allScripts) {
try {
console.log("Now evaluating", script.ref);
const ast = parseLua(script.script, { ref: script.ref });
// We create a local scope for each script
const scriptEnv = new LuaEnv(this.env);
const sf = new LuaStackFrame(tl, ast.ctx);
await evalStatement(ast, scriptEnv, sf);
} catch (e: any) {
if (e instanceof LuaRuntimeError) {
const origin = resolveASTReference(e.sf.astCtx!);
if (origin) {
console.error(
`Error evaluating script: ${e.message} at [[${
encodeRef(origin)
}]]`,
);
continue;
}
}
console.error(
`Error evaluating script: ${e.message} for script: ${script.script}`,
);
}
}
console.log("[Lua] Loaded", allScripts.length, "scripts");
} catch (e: any) {
console.error("Error reloading Lua scripts:", e.message);
}
}
}
export function resolveASTReference(ctx?: ASTCtx): Ref | null {
if (!ctx?.ref) {
return null;
}
const ref = parseToRef(ctx.ref);
if (!ref) {
return null;
}
if (ref.details?.type === "position") {
ref.details.pos = (ref.details.pos as number) +
"```space-lua\n".length +
ctx.from!;
}
return ref;
}