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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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6
Userland/Libraries/LibJS/Runtime/Intl/Segmenter.cpp
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@ -45,7 +45,7 @@ StringView Segmenter::segmenter_granularity_string() const
}
// 18.7.1 CreateSegmentDataObject ( segmenter, string, startIndex, endIndex ), https://tc39.es/ecma402/#sec-createsegmentdataobject
Object* create_segment_data_object(VM& vm, Segmenter const& segmenter, Utf16View const& string, double start_index, double end_index)
ThrowCompletionOr<NonnullGCPtr<Object>> create_segment_data_object(VM& vm, Segmenter const& segmenter, Utf16View const& string, double start_index, double end_index)
{
auto& realm = *vm.current_realm();
@ -68,13 +68,13 @@ Object* create_segment_data_object(VM& vm, Segmenter const& segmenter, Utf16View
auto segment = string.substring_view(start_index, end_index - start_index);
// 7. Perform ! CreateDataPropertyOrThrow(result, "segment", segment).
MUST(result->create_data_property_or_throw(vm.names.segment, PrimitiveString::create(vm, segment)));
MUST(result->create_data_property_or_throw(vm.names.segment, PrimitiveString::create(vm, TRY(Utf16String::create(vm, segment)))));
// 8. Perform ! CreateDataPropertyOrThrow(result, "index", 𝔽(startIndex)).
MUST(result->create_data_property_or_throw(vm.names.index, Value(start_index)));
// 9. Perform ! CreateDataPropertyOrThrow(result, "input", string).
MUST(result->create_data_property_or_throw(vm.names.input, PrimitiveString::create(vm, string)));
MUST(result->create_data_property_or_throw(vm.names.input, PrimitiveString::create(vm, TRY(Utf16String::create(vm, string)))));
// 10. Let granularity be segmenter.[[SegmenterGranularity]].
auto granularity = segmenter.segmenter_granularity();