Rust编写的JavaScript引擎，该项目是一个试验性质的项目。
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Iban Eguia
0454ddec19
Execution stack & promises (#2107)
This PR overrides #1923. It also removes the `queues` dependency added there, and rebases it to the latest `main` branch state.
It adds the following:
- A job queue (in `Context`)
- The constructor [`Promise`](https://tc39.es/ecma262/#sec-promise-executor)
- [`Promise.race`](https://tc39.es/ecma262/#sec-promise.race)
- [`Promise.reject`](https://tc39.es/ecma262/#sec-promise.reject)
- [`Promise.resolve`](https://tc39.es/ecma262/#sec-promise.resolve)
- [`get Promise [ @@species ]`](https://tc39.es/ecma262/#sec-get-promise-@@species)
- [`Promise.prototype [ @@toStringTag ]`](https://tc39.es/ecma262/#sec-promise.prototype-@@tostringtag)
- [`Promise.prototype.then`](https://tc39.es/ecma262/#sec-promise.prototype.then)
- [`Promise.prototype.finally`](https://tc39.es/ecma262/#sec-promise.prototype.finally)
- [`Promise.prototype.catch`](https://tc39.es/ecma262/#sec-promise.prototype.catch)
- The additional needed infrastructure
- [`PerformPromiseThen ( promise, onFulfilled, onRejected [ , resultCapability ] )`](https://tc39.es/ecma262/#sec-performpromisethen)
- [`TriggerPromiseReactions ( reactions, argument )`](https://tc39.es/ecma262/#sec-triggerpromisereactions)
- [`PerformPromiseRace ( iteratorRecord, constructor, resultCapability, promiseResolve )`](https://tc39.es/ecma262/#sec-performpromiserace)
- [`RejectPromise ( promise, reason )`](https://tc39.es/ecma262/#sec-rejectpromise)
- [`FulfillPromise ( promise, value )`](https://tc39.es/ecma262/#sec-fulfillpromise)
- [`IfAbruptRejectPromise ( value, capability )`](https://tc39.es/ecma262/#sec-ifabruptrejectpromise)
- [`CreateResolvingFunctions ( promise )`](https://tc39.es/ecma262/#sec-createresolvingfunctions)
- [`NewPromiseCapability ( C )`](https://tc39.es/ecma262/#sec-newpromisecapability)
- [`NewPromiseReactionJob ( reaction, argument )`](https://tc39.es/ecma262/#sec-newpromisereactionjob)
- [`NewPromiseResolveThenableJob ( promiseToResolve, thenable, then )`](https://tc39.es/ecma262/#sec-newpromiseresolvethenablejob)
- [`PromiseResolve ( C, x )`](https://tc39.es/ecma262/#sec-promise-resolve)
- A test case showcasing the run-to-completion semantics.
An example program that shows the control flow with this addition is:
```javascript
new Promise((res, rej) => {
console.log("A");
res(undefined);
}).then((_) => console.log("B"));
console.log("C");
```
Which would output:
```
A
C
B
```
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2 years ago |
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src
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Execution stack & promises (#2107)
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2 years ago |
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Cargo.toml
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Execution stack & promises (#2107)
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2 years ago |
