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Code Issues Projects Releases Packages Wiki Activity Actions 9

AK: Add template specializations for Optional<{,Fly}String>

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Slice the size of `Optional<{,Fly}String>` in half by introducing
`UINTPTR_MAX` as an invalid bit pattern for these values.
This commit is contained in:
Jonne Ransijn 2024-10-28 22:53:16 +01:00 • committed by Andreas Kling
commit 2457118024
Notes: github-actions[bot] 2024-10-31 22:27:23 +00:00
8 changed files with 427 additions and 2 deletions
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8
AK/StringBase.h
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@ -75,6 +75,8 @@ public:
[[nodiscard]] ALWAYS_INLINE FlatPtr raw(Badge<FlyString>) const { return bit_cast<FlatPtr>(m_data); }
protected:
bool is_invalid() const { return m_invalid_tag == UINTPTR_MAX; }
template<typename Func>
ErrorOr<void> replace_with_new_string(size_t byte_count, Func&& callback)
{
@ -107,6 +109,11 @@ private:
explicit StringBase(NonnullRefPtr<Detail::StringData const>);
explicit constexpr StringBase(nullptr_t)
: m_invalid_tag(UINTPTR_MAX)
{
}
explicit constexpr StringBase(ShortString short_string)
: m_short_string(short_string)
{
@ -129,6 +136,7 @@ private:
union {
ShortString m_short_string;
Detail::StringData const* m_data { nullptr };
uintptr_t m_invalid_tag;
};
};