| 386 | } |
| 387 | var r, s = 0; |
| 388 | function next() { |
| 389 | while (r = env.stack.pop()) { |
| 390 | try { |
| 391 | if (!r.async && s === 1) return s = 0, env.stack.push(r), Promise.resolve().then(next); |
| 392 | if (r.dispose) { |
| 393 | var result = r.dispose.call(r.value); |
| 394 | if (r.async) return s |= 2, Promise.resolve(result).then(next, function(e) { fail(e); return next(); }); |
| 395 | } |
| 396 | else s |= 1; |
| 397 | } |
| 398 | catch (e) { |
| 399 | fail(e); |
| 400 | } |
| 401 | } |
| 402 | if (s === 1) return env.hasError ? Promise.reject(env.error) : Promise.resolve(); |
| 403 | if (env.hasError) throw env.error; |
| 404 | } |
| 405 | return next(); |
| 406 | }; |
| 407 | |