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LibJS: Make PromiseCapability GC-allocated

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A struct with three raw pointers to other GC'd types is a pretty big
liability, let's just turn this into a Cell itself.
This comes with the additional benefit of being able to capture it in
a lambda effortlessly, without having to create handles for individual
members.
This commit is contained in:
Linus Groh 2022-10-02 12:11:30 +01:00
parent 0585029c30
commit fc9d587e39
29 changed files with 243 additions and 217 deletions
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17
Userland/Libraries/LibJS/Runtime/PromiseJobs.cpp
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@ -20,7 +20,7 @@ namespace JS {
static ThrowCompletionOr<Value> run_reaction_job(VM& vm, PromiseReaction& reaction, Value argument)
{
// a. Let promiseCapability be reaction.[[Capability]].
auto& promise_capability = reaction.capability();
auto promise_capability = reaction.capability();
// b. Let type be reaction.[[Type]].
auto type = reaction.type();
@ -58,7 +58,7 @@ static ThrowCompletionOr<Value> run_reaction_job(VM& vm, PromiseReaction& reacti
}
// f. If promiseCapability is undefined, then
if (!promise_capability.has_value()) {
if (promise_capability == nullptr) {
// i. Assert: handlerResult is not an abrupt completion.
VERIFY(!handler_result.is_abrupt());
@ -74,15 +74,15 @@ static ThrowCompletionOr<Value> run_reaction_job(VM& vm, PromiseReaction& reacti
// h. If handlerResult is an abrupt completion, then
if (handler_result.is_abrupt()) {
// i. Return ? Call(promiseCapability.[[Reject]], undefined, « handlerResult.[[Value]] »).
auto* reject_function = promise_capability.value().reject;
dbgln_if(PROMISE_DEBUG, "run_reaction_job: Calling PromiseCapability's reject function @ {}", reject_function);
auto reject_function = promise_capability->reject();
dbgln_if(PROMISE_DEBUG, "run_reaction_job: Calling PromiseCapability's reject function @ {}", reject_function.ptr());
return call(vm, *reject_function, js_undefined(), *handler_result.value());
}
// i. Else,
else {
// i. Return ? Call(promiseCapability.[[Resolve]], undefined, « handlerResult.[[Value]] »).
auto* resolve_function = promise_capability.value().resolve;
dbgln_if(PROMISE_DEBUG, "[PromiseReactionJob]: Calling PromiseCapability's resolve function @ {}", resolve_function);
auto resolve_function = promise_capability->resolve();
dbgln_if(PROMISE_DEBUG, "[PromiseReactionJob]: Calling PromiseCapability's resolve function @ {}", resolve_function.ptr());
return call(vm, *resolve_function, js_undefined(), *handler_result.value());
}
}
@ -165,9 +165,8 @@ PromiseJob create_promise_resolve_thenable_job(VM& vm, Promise& promise_to_resol
VERIFY(then_realm);
// 1. Let job be a new Job Abstract Closure with no parameters that captures promiseToResolve, thenable, and then and performs the following steps when called:
// See PromiseResolveThenableJob::call() for "the following steps".
// NOTE: This is done out of order, since `then` is moved into the lambda and `then` would be invalid if it was done at the start.
auto job = [&vm, promise_to_resolve = make_handle(&promise_to_resolve), thenable = make_handle(thenable), then = move(then)]() mutable {
// See run_resolve_thenable_job() for "the following steps".
auto job = [&vm, promise_to_resolve = make_handle(promise_to_resolve), thenable = make_handle(thenable), then = move(then)]() mutable {
return run_resolve_thenable_job(vm, *promise_to_resolve.cell(), thenable.value(), then);
};