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LibJS: Replace dead code in ParseTimeZoneOffsetString with an assertion

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This is an editorial change in the Temporal spec.

See: a29c40b
This commit is contained in:
Linus Groh 2022-03-10 19:50:00 +01:00
parent 55f9733316
commit 7f5b4842f2
1 changed files with 10 additions and 10 deletions
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20
Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp
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@ -267,32 +267,32 @@ ThrowCompletionOr<double> parse_time_zone_offset_string(GlobalObject& global_obj
if (!success)
return vm.throw_completion<RangeError>(global_object, ErrorType::InvalidFormat, "TimeZone offset");
// 4. If either hours or sign are undefined, throw a RangeError exception.
// NOTE: Both of these checks are always false, due to the handling of Step 2
// 4. Assert: sign is not undefined.
// 5. Assert: hours is not undefined.
double sign;
// 5. If sign is the code unit 0x002D (HYPHEN-MINUS) or 0x2212 (MINUS SIGN), then
// 6. If sign is the code unit 0x002D (HYPHEN-MINUS) or 0x2212 (MINUS SIGN), then
if (sign_part.is_one_of("-", "\xE2\x88\x92")) {
// a. Set sign to −1.
sign = -1;
}
// 6. Else,
// 7. Else,
else {
// a. Set sign to 1.
sign = 1;
}
// 7. Set hours to ! ToIntegerOrInfinity(hours).
// 8. Set hours to ! ToIntegerOrInfinity(hours).
auto hours = *hours_part.to_uint<u8>();
// 8. Set minutes to ! ToIntegerOrInfinity(minutes).
// 9. Set minutes to ! ToIntegerOrInfinity(minutes).
auto minutes = *minutes_part.value_or("0"sv).to_uint<u8>();
// 9. Set seconds to ! ToIntegerOrInfinity(seconds).
// 10. Set seconds to ! ToIntegerOrInfinity(seconds).
auto seconds = *seconds_part.value_or("0"sv).to_uint<u8>();
i32 nanoseconds;
// 10. If fraction is not undefined, then
// 11. If fraction is not undefined, then
if (fraction_part.has_value()) {
// a. Set fraction to the string-concatenation of the previous value of fraction and the string "000000000".
auto fraction = String::formatted("{}000000000", *fraction_part);
@ -300,12 +300,12 @@ ThrowCompletionOr<double> parse_time_zone_offset_string(GlobalObject& global_obj
// c. Set nanoseconds to ! ToIntegerOrInfinity(nanoseconds).
nanoseconds = *fraction.substring(0, 9).to_int<i32>();
}
// 11. Else,
// 12. Else,
else {
// a. Let nanoseconds be 0.
nanoseconds = 0;
}
// 12. Return sign × (((hours × 60 + minutes) × 60 + seconds) × 10^9 + nanoseconds).
// 13. Return sign × (((hours × 60 + minutes) × 60 + seconds) × 10^9 + nanoseconds).
// NOTE: Decimal point in 10^9 is important, otherwise it's all integers and the result overflows!
return sign * (((hours * 60 + minutes) * 60 + seconds) * 1000000000.0 + nanoseconds);
}