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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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18
Userland/Libraries/LibJS/Runtime/Utf16String.h
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@ -21,10 +21,10 @@ class Utf16StringImpl : public RefCounted<Utf16StringImpl> {
public:
~Utf16StringImpl() = default;
static NonnullRefPtr<Utf16StringImpl> create();
static NonnullRefPtr<Utf16StringImpl> create(Utf16Data);
static NonnullRefPtr<Utf16StringImpl> create(StringView);
static NonnullRefPtr<Utf16StringImpl> create(Utf16View const&);
static ThrowCompletionOr<NonnullRefPtr<Utf16StringImpl>> create(VM&);
static ThrowCompletionOr<NonnullRefPtr<Utf16StringImpl>> create(VM&, Utf16Data);
static ThrowCompletionOr<NonnullRefPtr<Utf16StringImpl>> create(VM&, StringView);
static ThrowCompletionOr<NonnullRefPtr<Utf16StringImpl>> create(VM&, Utf16View const&);
Utf16Data const& string() const;
Utf16View view() const;
@ -40,10 +40,10 @@ private:
class Utf16String {
public:
Utf16String();
explicit Utf16String(Utf16Data);
explicit Utf16String(StringView);
explicit Utf16String(Utf16View const&);
static ThrowCompletionOr<Utf16String> create(VM&);
static ThrowCompletionOr<Utf16String> create(VM&, Utf16Data);
static ThrowCompletionOr<Utf16String> create(VM&, StringView);
static ThrowCompletionOr<Utf16String> create(VM&, Utf16View const&);
Utf16Data const& string() const;
Utf16View view() const;
@ -57,6 +57,8 @@ public:
bool is_empty() const;
private:
explicit Utf16String(NonnullRefPtr<Detail::Utf16StringImpl>);
NonnullRefPtr<Detail::Utf16StringImpl> m_string;
};