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1d42c4f6de
Per XLS-0095, we are taking steps to rename ripple(d) to xrpl(d). This change specifically removes all copyright notices referencing Ripple, XRPLF, and certain affiliated contributors upon mutual agreement, so the notice in the LICENSE.md file applies throughout. Copyright notices referencing external contributions remain as-is. Duplicate verbiage is also removed.
95 lines
1.8 KiB
C++
95 lines
1.8 KiB
C++
#ifndef XRPL_LEDGER_BOOK_DIRS_H_INCLUDED
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#define XRPL_LEDGER_BOOK_DIRS_H_INCLUDED
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#include <xrpl/beast/utility/Journal.h>
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#include <xrpl/ledger/ReadView.h>
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namespace ripple {
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class BookDirs
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{
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private:
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ReadView const* view_ = nullptr;
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uint256 const root_;
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uint256 const next_quality_;
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uint256 const key_;
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std::shared_ptr<SLE const> sle_ = nullptr;
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unsigned int entry_ = 0;
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uint256 index_;
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public:
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class const_iterator;
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using value_type = std::shared_ptr<SLE const>;
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BookDirs(ReadView const&, Book const&);
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const_iterator
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begin() const;
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const_iterator
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end() const;
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};
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class BookDirs::const_iterator
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{
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public:
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using value_type = BookDirs::value_type;
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using pointer = value_type const*;
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using reference = value_type const&;
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using difference_type = std::ptrdiff_t;
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using iterator_category = std::forward_iterator_tag;
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const_iterator() = default;
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bool
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operator==(const_iterator const& other) const;
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bool
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operator!=(const_iterator const& other) const
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{
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return !(*this == other);
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}
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reference
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operator*() const;
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pointer
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operator->() const
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{
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return &**this;
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}
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const_iterator&
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operator++();
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const_iterator
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operator++(int);
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private:
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friend class BookDirs;
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const_iterator(
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ReadView const& view,
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uint256 const& root,
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uint256 const& dir_key)
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: view_(&view), root_(root), key_(dir_key), cur_key_(dir_key)
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{
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}
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ReadView const* view_ = nullptr;
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uint256 root_;
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uint256 next_quality_;
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uint256 key_;
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uint256 cur_key_;
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std::shared_ptr<SLE const> sle_;
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unsigned int entry_ = 0;
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uint256 index_;
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std::optional<value_type> mutable cache_;
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static beast::Journal j_;
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};
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} // namespace ripple
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#endif
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