ladybird/AK/DeprecatedFlyString.h

104 lines
2.8 KiB
C++

/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/ByteString.h>
#include <AK/StringUtils.h>
namespace AK {
class DeprecatedFlyString {
public:
DeprecatedFlyString() = default;
DeprecatedFlyString(DeprecatedFlyString const& other)
: m_impl(other.impl())
{
}
DeprecatedFlyString(DeprecatedFlyString&& other)
: m_impl(move(other.m_impl))
{
}
DeprecatedFlyString(ByteString const&);
DeprecatedFlyString(StringView);
DeprecatedFlyString(char const* string)
: DeprecatedFlyString(static_cast<ByteString>(string))
{
}
static DeprecatedFlyString from_fly_impl(NonnullRefPtr<StringImpl const> impl)
{
VERIFY(impl->is_fly());
DeprecatedFlyString string;
string.m_impl = move(impl);
return string;
}
DeprecatedFlyString& operator=(DeprecatedFlyString const& other)
{
m_impl = other.m_impl;
return *this;
}
DeprecatedFlyString& operator=(DeprecatedFlyString&& other)
{
m_impl = move(other.m_impl);
return *this;
}
bool is_empty() const { return !m_impl || !m_impl->length(); }
bool is_null() const { return !m_impl; }
bool operator==(DeprecatedFlyString const& other) const { return m_impl == other.m_impl; }
bool operator==(ByteString const&) const;
bool operator==(StringView) const;
bool operator==(char const*) const;
StringImpl const* impl() const { return m_impl; }
char const* characters() const { return m_impl ? m_impl->characters() : nullptr; }
size_t length() const { return m_impl ? m_impl->length() : 0; }
ALWAYS_INLINE u32 hash() const { return m_impl ? m_impl->existing_hash() : 0; }
ALWAYS_INLINE StringView view() const { return m_impl ? m_impl->view() : StringView {}; }
DeprecatedFlyString to_lowercase() const;
template<Arithmetic T>
Optional<T> to_number(TrimWhitespace trim_whitespace = TrimWhitespace::Yes) const
{
return view().to_number<T>(trim_whitespace);
}
bool equals_ignoring_ascii_case(StringView) const;
bool starts_with(StringView, CaseSensitivity = CaseSensitivity::CaseSensitive) const;
bool ends_with(StringView, CaseSensitivity = CaseSensitivity::CaseSensitive) const;
static void did_destroy_impl(Badge<StringImpl>, StringImpl&);
template<typename... Ts>
[[nodiscard]] ALWAYS_INLINE constexpr bool is_one_of(Ts... strings) const
{
return (... || this->operator==(forward<Ts>(strings)));
}
private:
RefPtr<StringImpl const> m_impl;
};
template<>
struct Traits<DeprecatedFlyString> : public DefaultTraits<DeprecatedFlyString> {
static unsigned hash(DeprecatedFlyString const& s) { return s.hash(); }
};
}
#if USING_AK_GLOBALLY
using AK::DeprecatedFlyString;
#endif