Move error functionality to new wrapper

This commit is contained in:
Snarling
2022-08-06 17:53:09 -04:00
parent 74f3d6507f
commit 3a2e676c9b
7 changed files with 46 additions and 105 deletions
-78
View File
@@ -29,7 +29,6 @@ import { dialogBoxCreate } from "./ui/React/DialogBox";
import { arrayToString } from "./utils/helpers/arrayToString";
import { roundToTwo } from "./utils/helpers/roundToTwo";
import { isString } from "./utils/helpers/isString";
import { sprintf } from "sprintf-js";
import { parse } from "acorn";
import { simple as walksimple } from "acorn-walk";
@@ -63,83 +62,6 @@ export function prestigeWorkerScripts(): void {
// that resolves or rejects when the corresponding worker script is done.
function startNetscript2Script(player: IPlayer, workerScript: WorkerScript): Promise<void> {
workerScript.running = true;
// The name of the currently running netscript function, to prevent concurrent
// calls to hack, grow, etc.
let runningFn: string | null = null;
// We need to go through the environment and wrap each function in such a way that it
// can be called at most once at a time. This will prevent situations where multiple
// hack promises are outstanding, for example.
function wrap(propName: string, f: (...args: unknown[]) => Promise<void>): (...args: unknown[]) => Promise<void> {
// This function unfortunately cannot be an async function, because we don't
// know if the original one was, and there's no way to tell.
return function (...args: unknown[]) {
// Wrap every netscript function with a check for the stop flag.
// This prevents cases where we never stop because we are only calling
// netscript functions that don't check this.
// This is not a problem for legacy Netscript because it also checks the
// stop flag in the evaluator.
if (workerScript.env.stopFlag) {
throw new ScriptDeath(workerScript);
}
if (propName === "asleep") return f(...args); // OK for multiple simultaneous calls to sleep.
const msg =
"Concurrent calls to Netscript functions are not allowed! " +
"Did you forget to await hack(), grow(), or some other " +
"promise-returning function? (Currently running: %s tried to run: %s)";
if (runningFn) {
workerScript.errorMessage = makeRuntimeRejectMsg(workerScript, sprintf(msg, runningFn, propName));
throw new ScriptDeath(workerScript);
}
runningFn = propName;
// If the function throws an error, clear the runningFn flag first, and then re-throw it
// This allows people to properly catch errors thrown by NS functions without getting
// the concurrent call error above
let result;
try {
result = f(...args);
} catch (e: unknown) {
runningFn = null;
throw e;
}
if (result && result.finally !== undefined) {
return result.finally(function () {
runningFn = null;
});
} else {
runningFn = null;
return result;
}
};
}
function wrapObject(vars: unknown, ...tree: string[]): void {
const isObject = (x: unknown): x is { [key: string]: unknown } => typeof x === "object";
if (!isObject(vars)) throw new Error("wrong argument sent to wrapObject");
for (const prop of Object.keys(vars)) {
let e = vars[prop];
switch (typeof e) {
case "function": {
e = wrap([...tree, prop].join("."), e as any);
break;
}
case "object": {
if (Array.isArray(e)) continue;
wrapObject(e, ...tree, prop);
break;
}
}
}
}
wrapObject(workerScript.env.vars);
// Note: the environment that we pass to the JS script only needs to contain the functions visible
// to that script, which env.vars does at this point.
return new Promise<void>((resolve, reject) => {
executeJSScript(player, workerScript.getServer().scripts, workerScript)
.then(() => {