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rAKA/src/common/aka_safe_enum.hh
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aka_safe_enum.hh
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/**
* @file aka_safe_enum.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Wed Jan 16 2013
* @date last modification: Mon Jun 02 2014
*
* @brief Safe enums type (see More C++ Idioms/Type Safe Enum on Wikibooks
* http://en.wikibooks.org/wiki/More_C%2B%2B_Idioms/Type_Safe_Enum)
*
* @section LICENSE
*
* Copyright (©) 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_AKA_SAFE_ENUM_HH__
#define __AKANTU_AKA_SAFE_ENUM_HH__
__BEGIN_AKANTU__
/// Safe enumerated type
template<typename def, typename inner = typename def::type>
class safe_enum : public def {
typedef typename def::type type;
public:
safe_enum(type v) : val(v) {}
inner underlying() const { return val; }
bool operator == (const safe_enum & s) const { return this->val == s.val; }
bool operator != (const safe_enum & s) const { return this->val != s.val; }
bool operator < (const safe_enum & s) const { return this->val < s.val; }
bool operator <= (const safe_enum & s) const { return this->val <= s.val; }
bool operator > (const safe_enum & s) const { return this->val > s.val; }
bool operator >= (const safe_enum & s) const { return this->val >= s.val; }
operator inner() { return val; };
public:
// Works only if enumerations are contiguous.
class iterator {
public:
iterator(type v) : it(v) { }
void operator++() { ++it; }
safe_enum operator*() { return static_cast<type>(it); }
bool operator!=(iterator const & it) { return it.it != this->it; }
private:
int it;
};
static iterator begin() {
return def::_begin_;
}
static iterator end() {
return def::_end_;
}
protected:
inner val;
};
__END_AKANTU__
#endif /* __AKANTU_AKA_SAFE_ENUM_HH__ */
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