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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,35 +1,70 @@ | ||
| import { Arena } from "quickjs-emscripten-sync"; | ||
| import * as path from "path"; | ||
| import { Worker } from "worker_threads"; | ||
| import * as url from "url"; | ||
| import { Context } from "./context"; | ||
| import { getQuickJS, QuickJSWASMModule } from "quickjs-emscripten"; | ||
|
|
||
| let quickJS: QuickJSWASMModule | undefined; | ||
| const worker = new Worker( | ||
| url.pathToFileURL(path.join(__dirname, "/worker/quickjs-worker.js")) | ||
| ); | ||
|
|
||
| export async function safeEval(code: string, $: Context) { | ||
| const quickJS = await ensureQuickJS(); | ||
| const ctx = quickJS.newContext(); | ||
| const area = new Arena(ctx, { isMarshalable: true }); | ||
| area.expose({ $: $ }); | ||
| const ret = area.evalCode(code); | ||
| area.dispose(); | ||
| ctx.dispose(); | ||
| return ret; | ||
| let id = 0; | ||
| const idPromises = new Map<number, { resolve: (_: unknown) => void, reject: (_: unknown) => void }>(); | ||
|
|
||
| function setIdPromise(id: number, resolve: (_: unknown) => void, reject: (_: unknown) => void) { | ||
| idPromises.set(id, { resolve, reject }); | ||
| } | ||
|
|
||
| export async function safeEvalDiagnosticAction(code: string, $: Context, $$: unknown) { | ||
| const quickJS = await ensureQuickJS(); | ||
| const ctx = quickJS.newContext(); | ||
| const area = new Arena(ctx, { isMarshalable: true }); | ||
| area.expose({ $: $, $$: $$ }); | ||
| const ret = area.evalCode(code); | ||
| area.dispose(); | ||
| ctx.dispose(); | ||
| return ret; | ||
| function getIdPromise(id: number): { resolve: (_: unknown) => void, reject: (_: unknown) => void } | undefined { | ||
| const promise = idPromises.get(id); | ||
| if (!promise) { | ||
| return; | ||
| } | ||
| idPromises.delete(id); | ||
| return promise; | ||
| } | ||
|
|
||
| async function ensureQuickJS() { | ||
| if (quickJS !== undefined) { | ||
| return quickJS; | ||
| worker.on("message", ((payload: { id: number, result: unknown } | { id: number, error: unknown }) => { | ||
| const promise = getIdPromise(payload.id); | ||
| if (!promise) { | ||
| return; | ||
| } | ||
| if ("result" in payload) { | ||
| promise.resolve(payload.result); | ||
| } else if ("error" in payload) { | ||
| promise.reject(payload.error); | ||
| } | ||
| quickJS = await getQuickJS(); | ||
| return quickJS; | ||
| })); | ||
|
|
||
|
|
||
| export async function safeEval(code: string, $: Context) { | ||
| const currentId = id++; | ||
| const promise = new Promise<unknown>((resolve, reject) => { | ||
| setIdPromise(currentId, resolve, reject); | ||
| }); | ||
| worker.postMessage({ | ||
| id: currentId, | ||
| type: "safeEval", | ||
| payload: { | ||
| code, | ||
| $, | ||
| }, | ||
| }); | ||
| return promise; | ||
| } | ||
|
|
||
| export async function safeEvalDiagnosticAction(code: string, $: Context, $$: unknown) { | ||
| const currentId = id++; | ||
| const promise = new Promise<unknown>((resolve, reject) => { | ||
| setIdPromise(currentId, resolve, reject); | ||
| }); | ||
| worker.postMessage({ | ||
| id: currentId, | ||
| type: "safeEvalDiagnosticAction", | ||
| payload: { | ||
| code, | ||
| $, | ||
| $$, | ||
| }, | ||
| }); | ||
| return promise; | ||
| } |
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