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#pragma once
// wrap.hpp - basic integer wrapper classes
//
// Copyright © 2014 Ben Longbons <b.r.longbons@gmail.com>
//
// This file is part of The Mana World (Athena server)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "fwd.hpp"
#include <cstdint>
#include <type_traits>
namespace tmwa
{
namespace ints
{
namespace wrapped
{
template<class R>
struct Wrapped
{
typedef R wrapped_type;
R _value;
protected:
constexpr
Wrapped(uint32_t v=0)
: _value(v)
{}
public:
explicit
operator bool () const { return _value; }
bool operator !() const { return !_value; }
};
template<class W, typename=typename W::wrapped_type>
bool operator == (W l, W r)
{
return l._value == r._value;
}
template<class W, typename=typename W::wrapped_type>
bool operator != (W l, W r)
{
return l._value != r._value;
}
template<class W, typename=typename W::wrapped_type>
bool operator < (W l, W r)
{
return l._value < r._value;
}
template<class T>
constexpr
typename T::wrapped_type unwrap(typename std::enable_if<true, T>::type w)
{
return w._value;
}
template<class T>
constexpr
T wrap(typename T::wrapped_type v)
{
struct Sub : T
{
constexpr
Sub(typename T::wrapped_type v2)
: T(v2)
{}
};
return Sub(v);
}
template<class W>
constexpr
W next(W w)
{
return wrap<W>(unwrap<W>(w) + 1);
}
template<class W>
constexpr
W prev(W w)
{
return wrap<W>(unwrap<W>(w) - 1);
}
template<class R>
R convert_for_printf(Wrapped<R> w)
{
return w._value;
}
} // namespace wrapped
} // namespace ints
using ints::wrapped::Wrapped;
using ints::wrapped::unwrap;
using ints::wrapped::wrap;
} // namespace tmwa
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