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LibJS: Implement initializing a TypedArray from an iterable object

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Based on these specifications (which required IterableToList as well):
https://tc39.es/ecma262/#sec-typedarray
https://tc39.es/ecma262/#sec-initializetypedarrayfromlist
This commit is contained in:
Idan Horowitz 2021-04-16 23:54:41 +03:00 • committed by Linus Groh
parent 06a2173586
commit e3c634fdd0
4 changed files with 61 additions and 5 deletions
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19
Userland/Libraries/LibJS/Runtime/IteratorOperations.cpp
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@ -92,6 +92,21 @@ void iterator_close([[maybe_unused]] Object& iterator)
TODO();
}
MarkedValueList iterable_to_list(GlobalObject& global_object, Value iterable, Value method)
{
auto& vm = global_object.vm();
MarkedValueList values(vm.heap());
get_iterator_values(
global_object, iterable, [&](auto value) {
if (vm.exception())
return IterationDecision::Break;
values.append(value);
return IterationDecision::Continue;
},
method);
return values;
}
Value create_iterator_result_object(GlobalObject& global_object, Value value, bool done)
{
auto& vm = global_object.vm();
@ -101,11 +116,11 @@ Value create_iterator_result_object(GlobalObject& global_object, Value value, bo
return object;
}
void get_iterator_values(GlobalObject& global_object, Value value, AK::Function<IterationDecision(Value)> callback)
void get_iterator_values(GlobalObject& global_object, Value value, AK::Function<IterationDecision(Value)> callback, Value method)
{
auto& vm = global_object.vm();
auto iterator = get_iterator(global_object, value);
auto iterator = get_iterator(global_object, value, "sync", method);
if (!iterator)
return;