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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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2
Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
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@ -343,7 +343,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::eval)
// 19.2.6.1.1 Encode ( string, unescapedSet ), https://tc39.es/ecma262/#sec-encode
static ThrowCompletionOr<DeprecatedString> encode(VM& vm, DeprecatedString const& string, StringView unescaped_set)
{
auto utf16_string = Utf16String(string);
auto utf16_string = TRY(Utf16String::create(vm, string));
// 1. Let strLen be the length of string.
auto string_length = utf16_string.length_in_code_units();