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108 lines
3.4 KiB
C++
108 lines
3.4 KiB
C++
/*
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* Copyright (c) 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/Error.h>
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#include <AK/Format.h>
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#include <AK/Platform.h>
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#include <AK/String.h>
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#include <AK/Traits.h>
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#include <AK/Types.h>
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namespace AK {
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class FlyString {
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public:
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FlyString();
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~FlyString();
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static ErrorOr<FlyString> from_utf8(StringView);
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template<typename T>
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requires(IsOneOf<RemoveCVReference<T>, DeprecatedString, DeprecatedFlyString>)
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static ErrorOr<String> from_utf8(T&&) = delete;
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FlyString(String const&);
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FlyString& operator=(String const&);
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FlyString(FlyString const&);
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FlyString& operator=(FlyString const&);
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FlyString(FlyString&&);
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FlyString& operator=(FlyString&&);
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[[nodiscard]] bool is_empty() const;
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[[nodiscard]] unsigned hash() const;
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[[nodiscard]] u32 ascii_case_insensitive_hash() const;
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explicit operator String() const;
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String to_string() const;
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[[nodiscard]] Utf8View code_points() const;
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[[nodiscard]] ReadonlyBytes bytes() const;
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[[nodiscard]] StringView bytes_as_string_view() const;
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[[nodiscard]] bool operator==(FlyString const& other) const;
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[[nodiscard]] bool operator==(String const&) const;
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[[nodiscard]] bool operator==(StringView) const;
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[[nodiscard]] bool operator==(char const*) const;
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[[nodiscard]] int operator<=>(FlyString const& other) const;
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static void did_destroy_fly_string_data(Badge<Detail::StringData>, StringView);
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[[nodiscard]] uintptr_t data(Badge<String>) const;
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// This is primarily interesting to unit tests.
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[[nodiscard]] static size_t number_of_fly_strings();
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// FIXME: Remove these once all code has been ported to FlyString
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[[nodiscard]] DeprecatedFlyString to_deprecated_fly_string() const;
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static ErrorOr<FlyString> from_deprecated_fly_string(DeprecatedFlyString const&);
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template<typename T>
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requires(IsSame<RemoveCVReference<T>, StringView>)
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static ErrorOr<String> from_deprecated_fly_string(T&&) = delete;
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// Compare this FlyString against another string with ASCII caseless matching.
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[[nodiscard]] bool equals_ignoring_ascii_case(FlyString const&) const;
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[[nodiscard]] bool equals_ignoring_ascii_case(StringView) const;
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template<typename... Ts>
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[[nodiscard]] ALWAYS_INLINE constexpr bool is_one_of(Ts... strings) const
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{
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return (... || this->operator==(forward<Ts>(strings)));
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}
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private:
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// This will hold either the pointer to the Detail::StringData it represents or the raw bytes of
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// an inlined short string.
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uintptr_t m_data { 0 };
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};
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template<>
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struct Traits<FlyString> : public GenericTraits<FlyString> {
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static unsigned hash(FlyString const&);
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};
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template<>
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struct Formatter<FlyString> : Formatter<StringView> {
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ErrorOr<void> format(FormatBuilder&, FlyString const&);
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};
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struct ASCIICaseInsensitiveFlyStringTraits : public Traits<String> {
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static unsigned hash(FlyString const& s) { return s.ascii_case_insensitive_hash(); }
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static bool equals(FlyString const& a, FlyString const& b) { return a.bytes().data() == b.bytes().data() || a.bytes_as_string_view().equals_ignoring_ascii_case(b.bytes_as_string_view()); }
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};
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}
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[[nodiscard]] ALWAYS_INLINE AK::FlyString operator""_fly_string(char const* cstring, size_t length)
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{
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return AK::FlyString::from_utf8(AK::StringView(cstring, length)).release_value();
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}
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#if USING_AK_GLOBALLY
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using AK::FlyString;
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#endif
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