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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "AK/StringUtils.h"
#include <AK/String.h>
namespace AK {
class FlyString {
public:
FlyString() = default;
FlyString(FlyString const& other)
: m_impl(other.impl())
{
}
FlyString(FlyString&& other)
: m_impl(move(other.m_impl))
{
}
FlyString(String const&);
FlyString(StringView);
FlyString(char const* string)
: FlyString(static_cast<String>(string))
{
}
static FlyString from_fly_impl(NonnullRefPtr<StringImpl> impl)
{
VERIFY(impl->is_fly());
FlyString string;
string.m_impl = move(impl);
return string;
}
FlyString& operator=(FlyString const& other)
{
m_impl = other.m_impl;
return *this;
}
FlyString& operator=(FlyString&& 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==(FlyString const& other) const { return m_impl == other.m_impl; }
bool operator!=(FlyString const& other) const { return m_impl != other.m_impl; }
bool operator==(String const&) const;
bool operator!=(String const& string) const { return !(*this == string); }
bool operator==(StringView) const;
bool operator!=(StringView string) const { return !(*this == string); }
bool operator==(char const*) const;
bool operator!=(char const* string) const { return !(*this == string); }
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 {}; }
FlyString to_lowercase() const;
template<typename T = int>
Optional<T> to_int(TrimWhitespace = TrimWhitespace::Yes) const;
template<typename T = unsigned>
Optional<T> to_uint(TrimWhitespace = TrimWhitespace::Yes) const;
bool equals_ignoring_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> m_impl;
};
template<>
struct Traits<FlyString> : public GenericTraits<FlyString> {
static unsigned hash(FlyString const& s) { return s.hash(); }
};
}
using AK::FlyString;
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