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author | Anton Samokhvalov <pg83@yandex.ru> | 2022-02-10 16:45:15 +0300 |
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committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:45:15 +0300 |
commit | 72cb13b4aff9bc9cf22e49251bc8fd143f82538f (patch) | |
tree | da2c34829458c7d4e74bdfbdf85dff449e9e7fb8 /util/generic/iterator.h | |
parent | 778e51ba091dc39e7b7fcab2b9cf4dbedfb6f2b5 (diff) | |
download | ydb-72cb13b4aff9bc9cf22e49251bc8fd143f82538f.tar.gz |
Restoring authorship annotation for Anton Samokhvalov <pg83@yandex.ru>. Commit 1 of 2.
Diffstat (limited to 'util/generic/iterator.h')
-rw-r--r-- | util/generic/iterator.h | 104 |
1 files changed, 52 insertions, 52 deletions
diff --git a/util/generic/iterator.h b/util/generic/iterator.h index 19e9d20976..88b4167e7d 100644 --- a/util/generic/iterator.h +++ b/util/generic/iterator.h @@ -1,35 +1,35 @@ #pragma once - + #include <iterator> #include <utility> -namespace NStlIterator { - template <class T> +namespace NStlIterator { + template <class T> class TProxy { public: TProxy() = default; - TProxy(T&& value) - : Value_(std::move(value)) - { + TProxy(T&& value) + : Value_(std::move(value)) + { } - + const T* operator->() const noexcept { return &Value_; } - + const T& operator*() const noexcept { return Value_; } - + bool operator==(const TProxy& rhs) const { return Value_ == rhs.Value_; - } - + } + private: T Value_; - }; + }; } // namespace NStlIterator - + /** * Range adaptor that turns a derived class with a Java-style iteration * interface into an STL range. @@ -63,11 +63,11 @@ namespace NStlIterator { * } * \endcode */ -template <class TSlave> +template <class TSlave> class TInputRangeAdaptor { public: // TODO: private - class TIterator { - public: + class TIterator { + public: static constexpr bool IsNoexceptNext = noexcept(std::declval<TSlave>().Next()); using difference_type = std::ptrdiff_t; @@ -77,56 +77,56 @@ public: // TODO: private using iterator_category = std::input_iterator_tag; inline TIterator() noexcept - : Slave_(nullptr) - , Cur_() - { - } - + : Slave_(nullptr) + , Cur_() + { + } + inline TIterator(TSlave* slave) noexcept(IsNoexceptNext) - : Slave_(slave) - , Cur_(Slave_->Next()) - { - } - + : Slave_(slave) + , Cur_(Slave_->Next()) + { + } + inline bool operator==(const TIterator& it) const noexcept { - return Cur_ == it.Cur_; - } - + return Cur_ == it.Cur_; + } + inline bool operator!=(const TIterator& it) const noexcept { - return !(*this == it); - } - + return !(*this == it); + } + inline pointer operator->() const noexcept { return Cur_; - } - + } + inline reference operator*() const noexcept { return *Cur_; - } - + } + inline TIterator& operator++() noexcept(IsNoexceptNext) { - Cur_ = Slave_->Next(); - - return *this; - } - - private: - TSlave* Slave_; + Cur_ = Slave_->Next(); + + return *this; + } + + private: + TSlave* Slave_; pointer Cur_; - }; - -public: + }; + +public: using const_iterator = TIterator; using iterator = const_iterator; inline iterator begin() const noexcept(TIterator::IsNoexceptNext) { - return TIterator(const_cast<TSlave*>(static_cast<const TSlave*>(this))); - } - + return TIterator(const_cast<TSlave*>(static_cast<const TSlave*>(this))); + } + inline iterator end() const noexcept { - return TIterator(); - } -}; + return TIterator(); + } +}; /** * Transform given reverse iterator into forward iterator pointing to the same element. |