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ladybird/Userland/Libraries/LibJS/Runtime/Utf16String.h

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LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
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/*
AK+LibJS+LibRegex: Define an alias for UTF-16 string data storage Instead of writing out "Vector<u16, 1>" everywhere, let's have a name for it.
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* Copyright (c) 2021-2023, Tim Flynn <trflynn89@serenityos.org>
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
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*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
AK+Everywhere: Rename String to DeprecatedString We have a new, improved string type coming up in AK (OOM aware, no null state), and while it's going to use UTF-8, the name UTF8String is a mouthful - so let's free up the String name by renaming the existing class. Making the old one have an annoying name will hopefully also help with quick adoption :^)
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#include <AK/DeprecatedString.h>
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
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#include <AK/NonnullRefPtr.h>
#include <AK/RefCounted.h>
#include <AK/Types.h>
AK+LibJS+LibRegex: Define an alias for UTF-16 string data storage Instead of writing out "Vector<u16, 1>" everywhere, let's have a name for it.
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#include <AK/Utf16View.h>
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
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#include <AK/Vector.h>
AK+Everywhere: Make UTF-16 to UTF-8 converter fallible This could fail to allocate the underlying storage needed to store the UTF-8 data. Propagate this error.
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#include <LibJS/Runtime/Completion.h>
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
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namespace JS {
namespace Detail {
class Utf16StringImpl : public RefCounted<Utf16StringImpl> {
public:
~Utf16StringImpl() = default;
LibJS+Everywhere: Make PrimitiveString and Utf16String fallible 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.
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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&);
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
2021-08-09 08:58:31 -04:00
AK+LibJS+LibRegex: Define an alias for UTF-16 string data storage Instead of writing out "Vector<u16, 1>" everywhere, let's have a name for it.
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Utf16Data const& string() const;
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
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Utf16View view() const;
private:
Utf16StringImpl() = default;
AK+LibJS+LibRegex: Define an alias for UTF-16 string data storage Instead of writing out "Vector<u16, 1>" everywhere, let's have a name for it.
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explicit Utf16StringImpl(Utf16Data string);
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
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AK+LibJS+LibRegex: Define an alias for UTF-16 string data storage Instead of writing out "Vector<u16, 1>" everywhere, let's have a name for it.
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Utf16Data m_string;
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
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};
}
class Utf16String {
public:
LibJS+Everywhere: Make PrimitiveString and Utf16String fallible 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.
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static ThrowCompletionOr<Utf16String> create(VM&);
static ThrowCompletionOr<Utf16String> create(VM&, Utf16Data);
static ThrowCompletionOr<Utf16String> create(VM&, StringView);
static ThrowCompletionOr<Utf16String> create(VM&, Utf16View const&);
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
2021-08-09 08:58:31 -04:00
AK+LibJS+LibRegex: Define an alias for UTF-16 string data storage Instead of writing out "Vector<u16, 1>" everywhere, let's have a name for it.
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Utf16Data const& string() const;
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
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Utf16View view() const;
Utf16View substring_view(size_t code_unit_offset, size_t code_unit_length) const;
Utf16View substring_view(size_t code_unit_offset) const;
LibJS: Define Utf16String::to_utf8 to convert Utf16String to String
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ThrowCompletionOr<String> to_utf8(VM&) const;
LibJS: Rename Utf16String::to_utf8 to to_deprecated_string
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ThrowCompletionOr<DeprecatedString> to_deprecated_string(VM&) const;
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
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u16 code_unit_at(size_t index) const;
size_t length_in_code_units() const;
bool is_empty() const;
private:
LibJS+Everywhere: Make PrimitiveString and Utf16String fallible 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.
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explicit Utf16String(NonnullRefPtr<Detail::Utf16StringImpl>);
LibJS: Add a simple reference-counted UTF-16 string To help alleviate memory usage when creating and copying large strings, create a simple wrapper around a Vector<u16> to reference count UTF-16 strings.
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NonnullRefPtr<Detail::Utf16StringImpl> m_string;
};
}
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