aka_safe_enum.hh
1da1113dfc21master-stable

aka_safe_enum.hh
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			/**
			* @file aka_safe_enum.hh
			*
			* @author Nicolas Richart <nicolas.richart@epfl.ch>
			*
			* @date creation: Thu Feb 21 2013
			* @date last modification: Tue Nov 07 2017
			*
			* @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 (©) 2014-2018 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__

			namespace akantu {

			/// Safe enumerated type
			template <typename def, typename inner = typename def::type>
			class safe_enum : public def {
			using type = typename def::type;

			public:
			explicit safe_enum(type v = def::_end_) : val(v) {}
			safe_enum(safe_enum && other) = default;
			safe_enum & operator=(safe_enum && other) = default;

			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:
			explicit iterator(type v) : it(v) {}
			iterator & operator++() {
			++it;
			return *this;
			}
			safe_enum operator*() { return safe_enum(static_cast<type>(it)); }
			bool operator!=(iterator const & it) { return it.it != this->it; }

			private:
			int it;
			};

			static iterator begin() { return iterator(def::_begin_); }

			static iterator end() { return iterator(def::_end_); }

			protected:
			inner val;
			};

			} // akantu

			#endif /* __AKANTU_AKA_SAFE_ENUM_HH__ */

rAKA/src/common/aka_safe_enum.hh1da1113dfc21master-stable

aka_safe_enum.hhView Options

rAKA/src/common/aka_safe_enum.hh
1da1113dfc21master-stable

aka_safe_enum.hh
View Options