150 lines
5.5 KiB
C++
150 lines
5.5 KiB
C++
/******************************************************************************
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The MIT License(MIT)
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Embedded Template Library.
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https://github.com/ETLCPP/etl
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https://www.etlcpp.com
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Copyright(c) 2017 John Wellbelove
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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******************************************************************************/
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#ifndef ETL_VARIANT_POOL_INCLUDED
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#define ETL_VARIANT_POOL_INCLUDED
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#include "platform.h"
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#include "largest.h"
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#include "pool.h"
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#include "static_assert.h"
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#include "type_traits.h"
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#include <stdint.h>
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namespace etl
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{
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#if ETL_USING_CPP11 && !defined(ETL_VARIANT_POOL_FORCE_CPP03_IMPLEMENTATION)
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//***************************************************************************
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template <size_t MAX_SIZE_, typename... Ts>
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class variant_pool : public etl::generic_pool<etl::largest<Ts...>::size, etl::largest<Ts...>::alignment, MAX_SIZE_>
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{
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public:
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typedef etl::generic_pool<etl::largest<Ts...>::size, etl::largest<Ts...>::alignment, MAX_SIZE_> base_t;
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static const size_t MAX_SIZE = MAX_SIZE_;
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//*************************************************************************
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/// Default constructor.
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//*************************************************************************
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variant_pool() {}
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//*************************************************************************
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/// Creates the object from a type. Variadic parameter constructor.
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//*************************************************************************
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template <typename T, typename... Args>
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T* create(Args&&... args)
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{
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ETL_STATIC_ASSERT((etl::is_one_of<T, Ts...>::value), "Unsupported type");
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return base_t::template create<T>(etl::forward<Args>(args)...);
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}
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//*************************************************************************
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/// Destroys the object.
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//*************************************************************************
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template <typename T>
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void destroy(const T* const p)
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{
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ETL_STATIC_ASSERT((etl::is_one_of<T, Ts...>::value || etl::is_base_of_any<T, Ts...>::value), "Invalid type");
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base_t::destroy(p);
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}
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//*************************************************************************
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/// Returns the maximum number of items in the variant_pool.
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//*************************************************************************
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size_t max_size() const
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{
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return MAX_SIZE;
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}
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private:
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variant_pool(const variant_pool&) ETL_DELETE;
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variant_pool& operator=(const variant_pool&) ETL_DELETE;
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};
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//***************************************************************************
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template <typename... Ts>
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class variant_pool_ext : public etl::generic_pool_ext<etl::largest<Ts...>::size, etl::largest<Ts...>::alignment>
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{
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public:
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typedef etl::generic_pool_ext<etl::largest<Ts...>::size, etl::largest<Ts...>::alignment> base_t;
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//*************************************************************************
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/// Default constructor.
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//*************************************************************************
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variant_pool_ext(typename base_t::element* buffer, size_t size)
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: base_t(buffer, size)
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{
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}
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//*************************************************************************
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/// Creates the object from a type. Variadic parameter constructor.
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//*************************************************************************
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template <typename T, typename... Args>
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T* create(Args&&... args)
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{
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ETL_STATIC_ASSERT((etl::is_one_of<T, Ts...>::value), "Unsupported type");
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return base_t::template create<T>(etl::forward<Args>(args)...);
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}
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//*************************************************************************
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/// Destroys the object.
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//*************************************************************************
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template <typename T>
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void destroy(const T* const p)
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{
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ETL_STATIC_ASSERT((etl::is_one_of<T, Ts...>::value || etl::is_base_of_any<T, Ts...>::value), "Invalid type");
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base_t::destroy(p);
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}
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//*************************************************************************
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/// Returns the maximum number of items in the variant_pool.
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//*************************************************************************
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size_t max_size() const
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{
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return base_t::max_size();
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}
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private:
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variant_pool_ext(const variant_pool_ext&) ETL_DELETE;
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variant_pool_ext& operator=(const variant_pool_ext&) ETL_DELETE;
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};
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#else
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#include "private/variant_pool_cpp03.h"
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#endif
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} // namespace etl
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#endif
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