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LibJS: Throw RangeError in PrepareTemporalFields for +/-∞

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This is a normative change in the Temporal spec.

See: 499282a
This commit is contained in:
Linus Groh 2021-09-01 00:25:17 +01:00
parent e845e7c814
commit ed98c1afc7
5 changed files with 25 additions and 32 deletions
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23
Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
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@ -872,31 +872,24 @@ Optional<TemporalTimeZone> parse_temporal_time_zone_string(GlobalObject& global_
return TemporalTimeZone { .z = false, .offset = offset, .name = name };
}
// 13.46 ToPositiveIntegerOrInfinity ( argument ), https://tc39.es/proposal-temporal/#sec-temporal-topositiveintegerorinfinity
double to_positive_integer_or_infinity(GlobalObject& global_object, Value argument)
// 13.46 ToPositiveInteger ( argument ), https://tc39.es/proposal-temporal/#sec-temporal-topositiveinteger
double to_positive_integer(GlobalObject& global_object, Value argument)
{
auto& vm = global_object.vm();
// 1. Let integer be ? ToIntegerOrInfinity(argument).
auto integer = argument.to_integer_or_infinity(global_object);
// 1. Let integer be ? ToIntegerThrowOnInfinity(argument).
auto integer = to_integer_throw_on_infinity(global_object, argument, ErrorType::TemporalPropertyMustBePositiveInteger);
if (vm.exception())
return {};
// 2. If integer is -∞𝔽, then
if (Value(integer).is_negative_infinity()) {
// a. Throw a RangeError exception.
vm.throw_exception<RangeError>(global_object, ErrorType::TemporalPropertyMustBePositiveInteger);
return {};
}
// 3. If integer ≤ 0, then
// 2. If integer ≤ 0, then
if (integer <= 0) {
// a. Throw a RangeError exception.
vm.throw_exception<RangeError>(global_object, ErrorType::TemporalPropertyMustBePositiveInteger);
return {};
}
// 4. Return integer.
// 3. Return integer.
return integer;
}
@ -939,11 +932,11 @@ Object* prepare_temporal_fields(GlobalObject& global_object, Object& fields, Vec
// 1. Let Conversion represent the abstract operation named by the Conversion value of the same row.
// 2. Set value to ? Conversion(value).
if (property.is_one_of("year", "hour", "minute", "second", "millisecond", "microsecond", "nanosecond", "eraYear")) {
value = Value(value.to_integer_or_infinity(global_object));
value = Value(to_integer_throw_on_infinity(global_object, value, ErrorType::TemporalPropertyMustBeFinite));
if (vm.exception())
return {};
} else if (property.is_one_of("month", "day")) {
value = Value(to_positive_integer_or_infinity(global_object, value));
value = Value(to_positive_integer(global_object, value));
if (vm.exception())
return {};
} else if (property.is_one_of("monthCode", "offset", "era")) {