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115baa7e32
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.
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/*
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* Copyright (c) 2021-2023, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/DeprecatedString.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/RefCounted.h>
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#include <AK/Types.h>
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#include <AK/Utf16View.h>
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#include <AK/Vector.h>
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#include <LibJS/Runtime/Completion.h>
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namespace JS {
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namespace Detail {
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class Utf16StringImpl : public RefCounted<Utf16StringImpl> {
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public:
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~Utf16StringImpl() = default;
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static ThrowCompletionOr<NonnullRefPtr<Utf16StringImpl>> create(VM&);
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static ThrowCompletionOr<NonnullRefPtr<Utf16StringImpl>> create(VM&, Utf16Data);
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static ThrowCompletionOr<NonnullRefPtr<Utf16StringImpl>> create(VM&, StringView);
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static ThrowCompletionOr<NonnullRefPtr<Utf16StringImpl>> create(VM&, Utf16View const&);
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Utf16Data const& string() const;
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Utf16View view() const;
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private:
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Utf16StringImpl() = default;
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explicit Utf16StringImpl(Utf16Data string);
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Utf16Data m_string;
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};
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}
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class Utf16String {
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public:
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static ThrowCompletionOr<Utf16String> create(VM&);
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static ThrowCompletionOr<Utf16String> create(VM&, Utf16Data);
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static ThrowCompletionOr<Utf16String> create(VM&, StringView);
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static ThrowCompletionOr<Utf16String> create(VM&, Utf16View const&);
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Utf16Data const& string() const;
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Utf16View view() const;
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Utf16View substring_view(size_t code_unit_offset, size_t code_unit_length) const;
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Utf16View substring_view(size_t code_unit_offset) const;
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ThrowCompletionOr<DeprecatedString> to_utf8(VM&) const;
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u16 code_unit_at(size_t index) const;
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size_t length_in_code_units() const;
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bool is_empty() const;
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private:
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explicit Utf16String(NonnullRefPtr<Detail::Utf16StringImpl>);
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NonnullRefPtr<Detail::Utf16StringImpl> m_string;
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};
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}
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