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LibJS: Implement Temporal.Instant.fromEpochMicroseconds()

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This commit is contained in:
Linus Groh 2021-07-09 12:10:16 +01:00
parent 66ff772254
commit 5872357b56
4 changed files with 75 additions and 0 deletions
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22
Userland/Libraries/LibJS/Runtime/Temporal/InstantConstructor.cpp
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@ -29,6 +29,7 @@ void InstantConstructor::initialize(GlobalObject& global_object)
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.fromEpochSeconds, from_epoch_seconds, 1, attr);
define_native_function(vm.names.fromEpochMilliseconds, from_epoch_milliseconds, 1, attr);
define_native_function(vm.names.fromEpochMicroseconds, from_epoch_microseconds, 1, attr);
define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
}
@ -117,4 +118,25 @@ JS_DEFINE_NATIVE_FUNCTION(InstantConstructor::from_epoch_milliseconds)
return create_temporal_instant(global_object, *epoch_nanoseconds);
}
// 8.2.5 Temporal.Instant.fromEpochMicroseconds ( epochMicroseconds )
JS_DEFINE_NATIVE_FUNCTION(InstantConstructor::from_epoch_microseconds)
{
// 1. Set epochMicroseconds to ? ToBigInt(epochMicroseconds).
auto* epoch_microseconds = vm.argument(0).to_bigint(global_object);
if (vm.exception())
return {};
// 2. Let epochNanoseconds be epochMicroseconds × 1000ℤ.
auto* epoch_nanoseconds = js_bigint(vm.heap(), epoch_microseconds->big_integer().multiplied_by(Crypto::UnsignedBigInteger { 1'000 }));
// 3. If ! IsValidEpochNanoseconds(epochNanoseconds) is false, throw a RangeError exception.
if (!is_valid_epoch_nanoseconds(*epoch_nanoseconds)) {
vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidEpochNanoseconds);
return {};
}
// 4. Return ? CreateTemporalInstant(epochNanoseconds).
return create_temporal_instant(global_object, *epoch_nanoseconds);
}
}