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| Original file line number | Diff line number | Diff line change |
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| //------------------------------------------------------------------------------ | ||
| /* | ||
| This file is part of rippled: https://github.com/ripple/rippled | ||
| Copyright 2014, Nikolaos D. Bougalis <[email protected]> | ||
| Permission to use, copy, modify, and/or distribute this software for any | ||
| purpose with or without fee is hereby granted, provided that the above | ||
| copyright notice and this permission notice appear in all copies. | ||
| THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | ||
| WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | ||
| MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | ||
| ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
| WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | ||
| ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | ||
| OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | ||
| */ | ||
| //============================================================================== | ||
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| #ifndef BEAST_UTILITY_TAGGED_INTEGER_H_INCLUDED | ||
| #define BEAST_UTILITY_TAGGED_INTEGER_H_INCLUDED | ||
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| #include <ripple/beast/hash/hash_append.h> | ||
| #include <boost/operators.hpp> | ||
| #include <functional> | ||
| #include <iostream> | ||
| #include <type_traits> | ||
| #include <utility> | ||
|
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| namespace ripple { | ||
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| /** A type-safe wrap around standard integral types | ||
| The tag is used to implement type safety, catching mismatched types at | ||
| compile time. Multiple instantiations wrapping the same underlying integral | ||
| type are distinct types (distinguished by tag) and will not interoperate. A | ||
| tagged_integer supports all the usual assignment, arithmetic, comparison and | ||
| shifting operations defined for the underlying type | ||
| The tag is not meant as a unit, which would require restricting the set of | ||
| allowed arithmetic operations. | ||
| */ | ||
| template <class Int, class Tag> | ||
| class tagged_integer : boost::operators<tagged_integer<Int, Tag>> | ||
| , boost::shiftable<tagged_integer<Int, Tag>> | ||
| { | ||
| private: | ||
| Int m_value; | ||
|
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| public: | ||
| using value_type = Int; | ||
| using tag_type = Tag; | ||
|
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| tagged_integer() = default; | ||
|
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| template < | ||
| class OtherInt, | ||
| class = typename std::enable_if< | ||
| std::is_integral<OtherInt>::value && | ||
| sizeof(OtherInt) <= sizeof(Int)>::type> | ||
| explicit | ||
| /* constexpr */ | ||
| tagged_integer(OtherInt value) noexcept | ||
| : m_value(value) | ||
| { | ||
| } | ||
|
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||
| bool | ||
| operator<(const tagged_integer & rhs) const noexcept | ||
| { | ||
| return m_value < rhs.m_value; | ||
| } | ||
|
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||
| bool | ||
| operator==(const tagged_integer & rhs) const noexcept | ||
| { | ||
| return m_value == rhs.m_value; | ||
| } | ||
|
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||
| tagged_integer& | ||
| operator+=(tagged_integer const& rhs) noexcept | ||
| { | ||
| m_value += rhs.m_value; | ||
| return *this; | ||
| } | ||
|
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||
| tagged_integer& | ||
| operator-=(tagged_integer const& rhs) noexcept | ||
| { | ||
| m_value -= rhs.m_value; | ||
| return *this; | ||
| } | ||
|
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||
| tagged_integer& | ||
| operator*=(tagged_integer const& rhs) noexcept | ||
| { | ||
| m_value *= rhs.m_value; | ||
| return *this; | ||
| } | ||
|
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||
| tagged_integer& | ||
| operator/=(tagged_integer const& rhs) noexcept | ||
| { | ||
| m_value /= rhs.m_value; | ||
| return *this; | ||
| } | ||
|
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||
| tagged_integer& | ||
| operator%=(tagged_integer const& rhs) noexcept | ||
| { | ||
| m_value %= rhs.m_value; | ||
| return *this; | ||
| } | ||
|
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||
| tagged_integer& | ||
| operator|=(tagged_integer const& rhs) noexcept | ||
| { | ||
| m_value |= rhs.m_value; | ||
| return *this; | ||
| } | ||
|
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||
| tagged_integer& | ||
| operator&=(tagged_integer const& rhs) noexcept | ||
| { | ||
| m_value &= rhs.m_value; | ||
| return *this; | ||
| } | ||
|
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||
| tagged_integer& | ||
| operator^=(tagged_integer const& rhs) noexcept | ||
| { | ||
| m_value ^= rhs.m_value; | ||
| return *this; | ||
| } | ||
|
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||
| tagged_integer& | ||
| operator<<=(const tagged_integer& rhs) noexcept | ||
| { | ||
| m_value <<= rhs.m_value; | ||
| return *this; | ||
| } | ||
|
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||
| tagged_integer& | ||
| operator>>=(const tagged_integer& rhs) noexcept | ||
| { | ||
| m_value >>= rhs.m_value; | ||
| return *this; | ||
| } | ||
|
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||
| tagged_integer | ||
| operator~() const noexcept | ||
| { | ||
| return tagged_integer{~m_value}; | ||
| } | ||
|
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| tagged_integer | ||
| operator+() const noexcept | ||
| { | ||
| return *this; | ||
| } | ||
|
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| tagged_integer | ||
| operator-() const noexcept | ||
| { | ||
| return tagged_integer{-m_value}; | ||
| } | ||
|
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| tagged_integer& | ||
| operator++ () noexcept | ||
| { | ||
| ++m_value; | ||
| return *this; | ||
| } | ||
|
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| tagged_integer& | ||
| operator-- () noexcept | ||
| { | ||
| --m_value; | ||
| return *this; | ||
| } | ||
|
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| explicit | ||
| operator Int() const noexcept | ||
| { | ||
| return m_value; | ||
| } | ||
|
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||
| friend | ||
| std::ostream& | ||
| operator<< (std::ostream& s, tagged_integer const& t) | ||
| { | ||
| s << t.m_value; | ||
| return s; | ||
| } | ||
|
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||
| friend | ||
| std::istream& | ||
| operator>> (std::istream& s, tagged_integer& t) | ||
| { | ||
| s >> t.m_value; | ||
| return s; | ||
| } | ||
|
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||
| friend | ||
| std::string | ||
| to_string(tagged_integer const& t) | ||
| { | ||
| return std::to_string(t.m_value); | ||
| } | ||
| }; | ||
|
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| } // ripple | ||
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| namespace beast { | ||
| template <class Int, class Tag, class HashAlgorithm> | ||
| struct is_contiguously_hashable<ripple::tagged_integer<Int, Tag>, HashAlgorithm> | ||
| : public is_contiguously_hashable<Int, HashAlgorithm> | ||
| { | ||
| }; | ||
|
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||
| } // beast | ||
| #endif | ||
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