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- /**
- * @file Value.hpp
- * @author The PARADEVS Development Team
- * See the AUTHORS or Authors.txt file
- */
- /*
- * PARADEVS - the multimodeling and simulation environment
- * This file is a part of the PARADEVS environment
- *
- * Copyright (C) 2013-2016 ULCO http://www.univ-littoral.fr
- *
- * 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/>.
- */
- #ifndef COMMON_VALUE
- #define COMMON_VALUE 1
- #include <boost/serialization/serialization.hpp>
- #include <boost/serialization/array.hpp>
- #include <cstring>
- #include <typeinfo>
- #include <vector>
- #include <iostream>
- namespace paradevs { namespace common {
- class Value
- {
- public:
- Value() : _content(nullptr), _size(0)
- { }
- template < typename T >
- Value(T value)
- { assign(&value, sizeof(T), typeid(T).hash_code()); }
- Value(void* content, size_t size)
- { assign(content, size, typeid(void*).hash_code()); }
- Value(const char* value, unsigned int size)
- { assign(value, size * sizeof(char), typeid(char*).hash_code()); }
- Value(const Value& value)
- {
- if (value._content) {
- assign(value._content, value._size, value._type_id);
- } else {
- _content = nullptr;
- _size = 0;
- _type_id = 0;
- }
- }
- virtual ~Value()
- { if (_content) delete _content; }
- bool empty() const
- { return _content == nullptr; }
- template < typename T >
- void get_content(T& value) const
- {
- assert(_type_id == typeid(T).hash_code());
- value = *(T*)(_content);
- }
- template < typename Z >
- bool is_type() const
- { return _type_id == typeid(Z).hash_code(); }
- void operator=(const Value& value)
- {
- if (_content) {
- delete _content;
- }
- if (value._content) {
- assign(value._content, value._size, value._type_id);
- } else {
- _content = nullptr;
- _size = 0;
- _type_id = 0;
- }
- }
- std::string to_string() const
- {
- if (is_type < double >()) {
- double v;
- get_content(v);
- return std::to_string(v);
- } else if (is_type < int >()) {
- int v;
- get_content(v);
- return std::to_string(v);
- } else if (is_type < bool >()) {
- bool v;
- get_content(v);
- return v ? "true" : "false";
- } if (is_type < std::vector < double > >()) {
- std::vector < double > v;
- get_content(v);
- return "";
- } else if (is_type < std::vector < int > >()) {
- std::vector < int > v;
- get_content(v);
- return "";
- } else if (is_type < std::vector < bool > >()) {
- std::vector < bool > v;
- get_content(v);
- return "";
- } else {
- return "<unstringify>";
- }
- }
- private:
- void assign(const void* content, size_t size, size_t type_id)
- {
- _content = new char[size];
- std::memcpy(_content, content, size);
- _size = size;
- _type_id = type_id;
- }
- friend class boost::serialization::access;
- template<class Archive>
- void serialize(Archive & ar, const unsigned int version)
- {
- (void) version;
- ar & _size;
- if (Archive::is_loading::value) {
- assert(_content == nullptr);
- _content = new char[_size];
- }
- ar & boost::serialization::make_array < char >(_content, _size);
- ar & _type_id;
- }
- char* _content;
- size_t _size;
- size_t _type_id;
- };
- } } // namespace paradevs common
- #endif
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