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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/AbstractOperations.cpp
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@ -376,14 +376,14 @@ static auto& find_key_in_value(T& value, StringView key)
}
// 9.2.7 ResolveLocale ( availableLocales, requestedLocales, options, relevantExtensionKeys, localeData ), https://tc39.es/ecma402/#sec-resolvelocale
LocaleResult resolve_locale(Vector<DeprecatedString> const& requested_locales, LocaleOptions const& options, Span<StringView const> relevant_extension_keys)
ThrowCompletionOr<LocaleResult> resolve_locale(Vector<DeprecatedString> const& requested_locales, LocaleOptions const& options, Span<StringView const> relevant_extension_keys)
{
// 1. Let matcher be options.[[localeMatcher]].
auto const& matcher = options.locale_matcher;
MatcherResult matcher_result;
// 2. If matcher is "lookup", then
if (matcher.is_string() && (matcher.as_string().deprecated_string() == "lookup"sv)) {
if (matcher.is_string() && (TRY(matcher.as_string().deprecated_string()) == "lookup"sv)) {
// a. Let r be ! LookupMatcher(availableLocales, requestedLocales).
matcher_result = lookup_matcher(requested_locales);
}
@ -578,7 +578,7 @@ ThrowCompletionOr<Array*> supported_locales(VM& vm, Vector<DeprecatedString> con
Vector<DeprecatedString> supported_locales;
// 3. If matcher is "best fit", then
if (matcher.as_string().deprecated_string() == "best fit"sv) {
if (TRY(matcher.as_string().deprecated_string()) == "best fit"sv) {
// a. Let supportedLocales be BestFitSupportedLocales(availableLocales, requestedLocales).
supported_locales = best_fit_supported_locales(requested_locales);
}