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LibJS+Everywhere: Make PrimitiveString and Utf16String fallible

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This makes construction of Utf16String fallible in OOM conditions. The
immediate impact is that PrimitiveString must then be fallible as well,
as it may either transcode UTF-8 to UTF-16, or create a UTF-16 string
from ropes.

There are a couple of places where it is very non-trivial to propagate
the error further. A FIXME has been added to those locations.
This commit is contained in:
Timothy Flynn 2023-01-07 12:24:05 -05:00 • committed by Linus Groh
parent d793262beb
commit 115baa7e32
57 changed files with 306 additions and 295 deletions
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20
Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
View file

@ -146,8 +146,8 @@ ThrowCompletionOr<Value> get_option(VM& vm, Object const& options, PropertyKey c
if (!values.is_empty()) {
// NOTE: Every location in the spec that invokes GetOption with type=boolean also has values=undefined.
VERIFY(value.is_string());
if (!values.contains_slow(value.as_string().deprecated_string()))
return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, value.as_string().deprecated_string(), property.as_string());
if (auto const& value_string = TRY(value.as_string().deprecated_string()); !values.contains_slow(value_string))
return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, value_string, property.as_string());
}
// 9. Return value.
@ -165,7 +165,7 @@ ThrowCompletionOr<DeprecatedString> to_temporal_overflow(VM& vm, Object const* o
auto option = TRY(get_option(vm, *options, vm.names.overflow, OptionType::String, { "constrain"sv, "reject"sv }, "constrain"sv));
VERIFY(option.is_string());
return option.as_string().deprecated_string();
return TRY(option.as_string().deprecated_string());
}
// 13.5 ToTemporalDisambiguation ( options ), https://tc39.es/proposal-temporal/#sec-temporal-totemporaldisambiguation
@ -179,7 +179,7 @@ ThrowCompletionOr<DeprecatedString> to_temporal_disambiguation(VM& vm, Object co
auto option = TRY(get_option(vm, *options, vm.names.disambiguation, OptionType::String, { "compatible"sv, "earlier"sv, "later"sv, "reject"sv }, "compatible"sv));
VERIFY(option.is_string());
return option.as_string().deprecated_string();
return TRY(option.as_string().deprecated_string());
}
// 13.6 ToTemporalRoundingMode ( normalizedOptions, fallback ), https://tc39.es/proposal-temporal/#sec-temporal-totemporalroundingmode
@ -202,7 +202,7 @@ ThrowCompletionOr<DeprecatedString> to_temporal_rounding_mode(VM& vm, Object con
fallback.view()));
VERIFY(option.is_string());
return option.as_string().deprecated_string();
return TRY(option.as_string().deprecated_string());
}
// 13.7 NegateTemporalRoundingMode ( roundingMode ), https://tc39.es/proposal-temporal/#sec-temporal-negatetemporalroundingmode
@ -239,7 +239,7 @@ ThrowCompletionOr<DeprecatedString> to_temporal_offset(VM& vm, Object const* opt
auto option = TRY(get_option(vm, *options, vm.names.offset, OptionType::String, { "prefer"sv, "use"sv, "ignore"sv, "reject"sv }, fallback.view()));
VERIFY(option.is_string());
return option.as_string().deprecated_string();
return TRY(option.as_string().deprecated_string());
}
// 13.9 ToCalendarNameOption ( normalizedOptions ), https://tc39.es/proposal-temporal/#sec-temporal-tocalendarnameoption
@ -249,7 +249,7 @@ ThrowCompletionOr<DeprecatedString> to_calendar_name_option(VM& vm, Object const
auto option = TRY(get_option(vm, normalized_options, vm.names.calendarName, OptionType::String, { "auto"sv, "always"sv, "never"sv, "critical"sv }, "auto"sv));
VERIFY(option.is_string());
return option.as_string().deprecated_string();
return TRY(option.as_string().deprecated_string());
}
// 13.10 ToTimeZoneNameOption ( normalizedOptions ), https://tc39.es/proposal-temporal/#sec-temporal-totimezonenameoption
@ -259,7 +259,7 @@ ThrowCompletionOr<DeprecatedString> to_time_zone_name_option(VM& vm, Object cons
auto option = TRY(get_option(vm, normalized_options, vm.names.timeZoneName, OptionType::String, { "auto"sv, "never"sv, "critical"sv }, "auto"sv));
VERIFY(option.is_string());
return option.as_string().deprecated_string();
return TRY(option.as_string().deprecated_string());
}
// 13.11 ToShowOffsetOption ( normalizedOptions ), https://tc39.es/proposal-temporal/#sec-temporal-toshowoffsetoption
@ -269,7 +269,7 @@ ThrowCompletionOr<DeprecatedString> to_show_offset_option(VM& vm, Object const&
auto option = TRY(get_option(vm, normalized_options, vm.names.offset, OptionType::String, { "auto"sv, "never"sv }, "auto"sv));
VERIFY(option.is_string());
return option.as_string().deprecated_string();
return TRY(option.as_string().deprecated_string());
}
// 13.12 ToTemporalRoundingIncrement ( normalizedOptions, dividend, inclusive ), https://tc39.es/proposal-temporal/#sec-temporal-totemporalroundingincrement
@ -530,7 +530,7 @@ ThrowCompletionOr<Optional<DeprecatedString>> get_temporal_unit(VM& vm, Object c
Optional<DeprecatedString> value = option_value.is_undefined()
? Optional<DeprecatedString> {}
: option_value.as_string().deprecated_string();
: TRY(option_value.as_string().deprecated_string());
// 11. If value is listed in the Plural column of Table 13, then
for (auto const& row : temporal_units) {

8
Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
View file

@ -126,7 +126,7 @@ ThrowCompletionOr<Vector<DeprecatedString>> calendar_fields(VM& vm, Object& cale
Vector<DeprecatedString> result;
for (auto& value : list)
result.append(value.as_string().deprecated_string());
result.append(TRY(value.as_string().deprecated_string()));
return result;
}
@ -781,7 +781,7 @@ ThrowCompletionOr<double> resolve_iso_month(VM& vm, Object const& fields)
// 6. Assert: Type(monthCode) is String.
VERIFY(month_code.is_string());
auto& month_code_string = month_code.as_string().deprecated_string();
auto const& month_code_string = TRY(month_code.as_string().deprecated_string());
// 7. If the length of monthCode is not 3, throw a RangeError exception.
auto month_length = month_code_string.length();
@ -943,7 +943,7 @@ ThrowCompletionOr<Object*> default_merge_calendar_fields(VM& vm, Object const& f
// 3. For each element key of fieldsKeys, do
for (auto& key : fields_keys) {
// a. If key is not "month" or "monthCode", then
if (key.as_string().deprecated_string() != vm.names.month.as_string() && key.as_string().deprecated_string() != vm.names.monthCode.as_string()) {
if (!TRY(key.as_string().deprecated_string()).is_one_of(vm.names.month.as_string(), vm.names.monthCode.as_string())) {
auto property_key = MUST(PropertyKey::from_value(vm, key));
// i. Let propValue be ? Get(fields, key).
@ -977,7 +977,7 @@ ThrowCompletionOr<Object*> default_merge_calendar_fields(VM& vm, Object const& f
}
// See comment above.
additional_fields_keys_contains_month_or_month_code_property |= key.as_string().deprecated_string() == vm.names.month.as_string() || key.as_string().deprecated_string() == vm.names.monthCode.as_string();
additional_fields_keys_contains_month_or_month_code_property |= TRY(key.as_string().deprecated_string()) == vm.names.month.as_string() || TRY(key.as_string().deprecated_string()) == vm.names.monthCode.as_string();
}
// 6. If additionalFieldsKeys does not contain either "month" or "monthCode", then

8
Userland/Libraries/LibJS/Runtime/Temporal/CalendarPrototype.cpp
View file

@ -559,19 +559,21 @@ JS_DEFINE_NATIVE_FUNCTION(CalendarPrototype::fields)
return TRY(iterator_close(vm, iterator_record, move(completion)));
}
auto const& next_value_string = TRY(next_value.as_string().deprecated_string());
// iii. If fieldNames contains nextValue, then
if (field_names.contains_slow(next_value)) {
// 1. Let completion be ThrowCompletion(a newly created RangeError object).
auto completion = vm.throw_completion<RangeError>(ErrorType::TemporalDuplicateCalendarField, next_value.as_string().deprecated_string());
auto completion = vm.throw_completion<RangeError>(ErrorType::TemporalDuplicateCalendarField, next_value_string);
// 2. Return ? IteratorClose(iteratorRecord, completion).
return TRY(iterator_close(vm, iterator_record, move(completion)));
}
// iv. If nextValue is not one of "year", "month", "monthCode", "day", "hour", "minute", "second", "millisecond", "microsecond", "nanosecond", then
if (!next_value.as_string().deprecated_string().is_one_of("year"sv, "month"sv, "monthCode"sv, "day"sv, "hour"sv, "minute"sv, "second"sv, "millisecond"sv, "microsecond"sv, "nanosecond"sv)) {
if (!next_value_string.is_one_of("year"sv, "month"sv, "monthCode"sv, "day"sv, "hour"sv, "minute"sv, "second"sv, "millisecond"sv, "microsecond"sv, "nanosecond"sv)) {
// 1. Let completion be ThrowCompletion(a newly created RangeError object).
auto completion = vm.throw_completion<RangeError>(ErrorType::TemporalInvalidCalendarFieldName, next_value.as_string().deprecated_string());
auto completion = vm.throw_completion<RangeError>(ErrorType::TemporalInvalidCalendarFieldName, next_value_string);
// 2. Return ? IteratorClose(iteratorRecord, completion).
return TRY(iterator_close(vm, iterator_record, move(completion)));

2
Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp
View file

@ -801,7 +801,7 @@ JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::with)
// 18. Assert: Type(offsetString) is String.
VERIFY(offset_string_value.is_string());
auto const& offset_string = offset_string_value.as_string().deprecated_string();
auto const& offset_string = TRY(offset_string_value.as_string().deprecated_string());
// 19. Let dateTimeResult be ? InterpretTemporalDateTimeFields(calendar, fields, options).
auto date_time_result = TRY(interpret_temporal_date_time_fields(vm, calendar, *fields, *options));