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LibJS+LibWeb: Replace JS::Utf16String with AK::Utf16String

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Timothy Flynn 2025-07-09 14:13:22 -04:00 • committed by Tim Flynn
commit a43cb15e81
Notes: github-actions[bot] 2025-07-18 16:46:59 +00:00
24 changed files with 172 additions and 526 deletions
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197
Libraries/LibJS/Runtime/Utf16String.h
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@ -1,197 +0,0 @@
/*
* Copyright (c) 2021-2023, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/ByteString.h>
#include <AK/NonnullRefPtr.h>
#include <AK/RefCounted.h>
#include <AK/Types.h>
#include <AK/Utf16View.h>
#include <AK/Vector.h>
#include <LibJS/Runtime/Completion.h>
namespace JS {
namespace Detail {
class JS_API Utf16StringImpl : public RefCounted<Utf16StringImpl> {
public:
~Utf16StringImpl() = default;
[[nodiscard]] static NonnullRefPtr<Utf16StringImpl> create();
[[nodiscard]] static NonnullRefPtr<Utf16StringImpl> create(Utf16Data);
[[nodiscard]] static NonnullRefPtr<Utf16StringImpl> create(StringView);
[[nodiscard]] static NonnullRefPtr<Utf16StringImpl> create(Utf16View const&);
Utf16Data const& string() const;
Utf16View view() const;
[[nodiscard]] u32 hash() const
{
if (!m_has_hash) {
m_hash = compute_hash();
m_has_hash = true;
}
return m_hash;
}
[[nodiscard]] bool operator==(Utf16StringImpl const& other) const { return string() == other.string(); }
private:
Utf16StringImpl() = default;
explicit Utf16StringImpl(Utf16Data string);
[[nodiscard]] u32 compute_hash() const;
mutable bool m_has_hash { false };
mutable u32 m_hash { 0 };
Utf16Data m_string;
Utf16View m_cached_view { m_string };
};
}
class JS_API Utf16String {
public:
[[nodiscard]] static Utf16String create();
[[nodiscard]] static Utf16String create(Utf16Data);
[[nodiscard]] static Utf16String create(StringView);
[[nodiscard]] static Utf16String create(Utf16View const&);
[[nodiscard]] static Utf16String invalid();
Utf16Data const& string() const;
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;
[[nodiscard]] String to_utf8() const;
[[nodiscard]] ByteString to_byte_string() const;
u16 code_unit_at(size_t index) const;
size_t length_in_code_units() const;
bool is_empty() const;
bool is_valid() const { return m_string; }
[[nodiscard]] u32 hash() const { return m_string->hash(); }
[[nodiscard]] bool operator==(Utf16String const& other) const
{
if (m_string == other.m_string)
return true;
return *m_string == *other.m_string;
}
private:
Utf16String() = default;
explicit Utf16String(NonnullRefPtr<Detail::Utf16StringImpl>);
RefPtr<Detail::Utf16StringImpl> m_string;
};
}
namespace AK {
template<>
struct Traits<JS::Utf16String> : public DefaultTraits<JS::Utf16String> {
static unsigned hash(JS::Utf16String const& s) { return s.hash(); }
};
template<>
class Optional<JS::Utf16String> : public OptionalBase<JS::Utf16String> {
template<typename U>
friend class Optional;
public:
using ValueType = JS::Utf16String;
Optional() = default;
template<SameAs<OptionalNone> V>
Optional(V) { }
Optional(Optional<JS::Utf16String> const& other)
{
if (other.has_value())
m_value = other.m_value;
}
Optional(Optional&& other)
: m_value(other.m_value)
{
}
template<typename U = JS::Utf16String>
requires(!IsSame<OptionalNone, RemoveCVReference<U>>)
explicit(!IsConvertible<U&&, JS::Utf16String>) Optional(U&& value)
requires(!IsSame<RemoveCVReference<U>, Optional<JS::Utf16String>> && IsConstructible<JS::Utf16String, U &&>)
: m_value(forward<U>(value))
{
}
template<SameAs<OptionalNone> V>
Optional& operator=(V)
{
clear();
return *this;
}
Optional& operator=(Optional const& other)
{
if (this != &other) {
clear();
m_value = other.m_value;
}
return *this;
}
Optional& operator=(Optional&& other)
{
if (this != &other) {
clear();
m_value = other.m_value;
}
return *this;
}
void clear()
{
m_value = JS::Utf16String::invalid();
}
[[nodiscard]] bool has_value() const
{
return m_value.is_valid();
}
[[nodiscard]] JS::Utf16String& value() &
{
VERIFY(has_value());
return m_value;
}
[[nodiscard]] JS::Utf16String const& value() const&
{
VERIFY(has_value());
return m_value;
}
[[nodiscard]] JS::Utf16String value() &&
{
return release_value();
}
[[nodiscard]] JS::Utf16String release_value()
{
VERIFY(has_value());
JS::Utf16String released_value = m_value;
clear();
return released_value;
}
private:
JS::Utf16String m_value { JS::Utf16String::invalid() };
};
}