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db3b4dd396
* The compiler can provide many non-explicit constructors for aggregate types. This is sometimes desired, but it can happen accidentally, resulting in run-time errors. * This commit assures that no types are aggregates unless existing code is using aggregate initialization.
181 lines
4.2 KiB
C++
181 lines
4.2 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef RIPPLE_PROTOCOL_BOOK_H_INCLUDED
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#define RIPPLE_PROTOCOL_BOOK_H_INCLUDED
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#include <ripple/protocol/Issue.h>
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#include <boost/utility/base_from_member.hpp>
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namespace ripple {
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/** Specifies an order book.
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The order book is a pair of Issues called in and out.
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@see Issue.
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*/
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class Book
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{
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public:
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Issue in;
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Issue out;
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Book ()
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{
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}
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Book (Issue const& in_, Issue const& out_)
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: in (in_)
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, out (out_)
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{
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}
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};
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bool
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isConsistent (Book const& book);
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std::string
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to_string (Book const& book);
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std::ostream&
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operator<< (std::ostream& os, Book const& x);
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template <class Hasher>
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void
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hash_append (Hasher& h, Book const& b)
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{
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using beast::hash_append;
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hash_append(h, b.in, b.out);
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}
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Book
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reversed (Book const& book);
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/** Ordered comparison. */
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int
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compare (Book const& lhs, Book const& rhs);
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/** Equality comparison. */
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/** @{ */
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bool
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operator== (Book const& lhs, Book const& rhs);
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bool
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operator!= (Book const& lhs, Book const& rhs);
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/** @} */
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/** Strict weak ordering. */
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/** @{ */
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bool
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operator< (Book const& lhs,Book const& rhs);
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bool
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operator> (Book const& lhs, Book const& rhs);
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bool
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operator>= (Book const& lhs, Book const& rhs);
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bool
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operator<= (Book const& lhs, Book const& rhs);
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/** @} */
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}
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//------------------------------------------------------------------------------
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namespace std {
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template <>
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struct hash <ripple::Issue>
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: private boost::base_from_member <std::hash <ripple::Currency>, 0>
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, private boost::base_from_member <std::hash <ripple::AccountID>, 1>
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{
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private:
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using currency_hash_type = boost::base_from_member <
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std::hash <ripple::Currency>, 0>;
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using issuer_hash_type = boost::base_from_member <
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std::hash <ripple::AccountID>, 1>;
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public:
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explicit hash() = default;
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using value_type = std::size_t;
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using argument_type = ripple::Issue;
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value_type operator() (argument_type const& value) const
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{
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value_type result (currency_hash_type::member (value.currency));
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if (!isXRP (value.currency))
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boost::hash_combine (result,
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issuer_hash_type::member (value.account));
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return result;
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}
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};
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//------------------------------------------------------------------------------
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template <>
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struct hash <ripple::Book>
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{
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private:
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using hasher = std::hash <ripple::Issue>;
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hasher m_hasher;
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public:
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explicit hash() = default;
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using value_type = std::size_t;
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using argument_type = ripple::Book;
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value_type operator() (argument_type const& value) const
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{
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value_type result (m_hasher (value.in));
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boost::hash_combine (result, m_hasher (value.out));
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return result;
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}
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};
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}
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//------------------------------------------------------------------------------
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namespace boost {
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template <>
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struct hash <ripple::Issue>
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: std::hash <ripple::Issue>
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{
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explicit hash() = default;
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using Base = std::hash <ripple::Issue>;
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// VFALCO NOTE broken in vs2012
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//using Base::Base; // inherit ctors
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};
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template <>
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struct hash <ripple::Book>
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: std::hash <ripple::Book>
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{
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explicit hash() = default;
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using Base = std::hash <ripple::Book>;
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// VFALCO NOTE broken in vs2012
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//using Base::Base; // inherit ctors
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};
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}
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#endif
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