scalar_datatype.h

/*******************************************************************************
 * Copyright (C) 2015-2021 Commissariat a l'energie atomique et aux energies alternatives (CEA)
 * Copyright (C) 2020-2021 Institute of Bioorganic Chemistry Polish Academy of Science (PSNC)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * * Neither the name of CEA nor the names of its contributors may be used to
 *   endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 ******************************************************************************/
 
#ifndef PDI_SCALAR_DATATYPE_H_
#define PDI_SCALAR_DATATYPE_H_
 
#include <functional>
#include <string>
#include <type_traits>
 
#include <pdi/pdi_fwd.h>
#include <pdi/datatype.h>
 
 
namespace PDI {
 
class PDI_EXPORT Scalar_datatype:
    public Datatype
{
    // Required to make_shared due to private ctor
    struct Shared_enabler;
    
    size_t m_size;
    
    size_t m_dense_size;
    
    size_t m_align;
    
    Scalar_kind m_kind;
    
    std::function<void* ( void*, const void* ) > m_copy;
    
    std::function<void ( void* ) > m_destroy;
    
    template <class T>
    static std::shared_ptr<Scalar_datatype> const cv_type_for_v;
    
    template <class T>
    static constexpr inline Scalar_kind kind_of()
    {
        if constexpr ( std::is_integral<T>::value ) {
            if constexpr ( std::is_signed<T>::value ) {
                return Scalar_kind::SIGNED;
            }
            return Scalar_kind::UNSIGNED;
        } else if constexpr ( std::is_floating_point<T>::value ) {
            return Scalar_kind::FLOAT;
        }
        return Scalar_kind::UNKNOWN;
    }
    
public:
    template <class T>
    static constexpr auto kind_of_v = kind_of<std::remove_cv_t<T>>();
    
    template <class T>
    static constexpr auto const& type_for_v = cv_type_for_v<std::remove_cv_t<T>>;
    
    Scalar_kind kind() const;
    
    Datatype_sptr densify() const override;
    
    Datatype_sptr evaluate ( Context& ) const override;
    
    bool dense() const override;
    
    size_t datasize() const override;
    
    size_t buffersize() const override;
    
    size_t alignment() const override;
    
    bool simple() const override;
    
    void* data_to_dense_copy ( void* to, const void* from ) const override;
    
    void* data_from_dense_copy ( void* to, const void* from ) const override;
    
    void destroy_data ( void* ptr ) const override;
    
    std::string debug_string() const override;
    
    bool operator== ( const Datatype& ) const override;
    
private:
    Scalar_datatype ( Scalar_kind kind, size_t size, const Attributes_map& attributes = {} );
    
    Scalar_datatype ( Scalar_kind kind, size_t size, size_t align, const Attributes_map& attributes = {} );
    
    Scalar_datatype ( Scalar_kind kind, size_t size, size_t align, size_t dense_size, std::function<void* ( void*, const void* ) > copy, std::function<void ( void* ) > destroy, const Attributes_map& attributes = {} );
    
public:
    static std::shared_ptr<Scalar_datatype> make ( Scalar_kind kind, size_t size, const Attributes_map& attributes = {} );
    
    static std::shared_ptr<Scalar_datatype> make ( Scalar_kind kind, size_t size, size_t align, const Attributes_map& attributes = {} );
    
    static std::shared_ptr<Scalar_datatype> make ( Scalar_kind kind, size_t size, size_t align, size_t dense_size, std::function<void* ( void*, const void* ) > copy, std::function<void ( void* ) > destroy, const Attributes_map& attributes = {} );
};
 
const auto UNDEF_TYPE = Scalar_datatype::make ( Scalar_kind::UNKNOWN, 0 );
 
extern template std::shared_ptr<Scalar_datatype> const Scalar_datatype::cv_type_for_v<uint8_t>;
 
extern template std::shared_ptr<Scalar_datatype> const Scalar_datatype::cv_type_for_v<uint16_t>;
 
extern template std::shared_ptr<Scalar_datatype> const Scalar_datatype::cv_type_for_v<uint32_t>;
 
extern template std::shared_ptr<Scalar_datatype> const Scalar_datatype::cv_type_for_v<uint64_t>;
 
extern template std::shared_ptr<Scalar_datatype> const Scalar_datatype::cv_type_for_v<int8_t>;
 
extern template std::shared_ptr<Scalar_datatype> const Scalar_datatype::cv_type_for_v<int16_t>;
 
extern template std::shared_ptr<Scalar_datatype> const Scalar_datatype::cv_type_for_v<int32_t>;
 
extern template std::shared_ptr<Scalar_datatype> const Scalar_datatype::cv_type_for_v<int64_t>;
 
extern template std::shared_ptr<Scalar_datatype> const Scalar_datatype::cv_type_for_v<bool>;
 
extern template std::shared_ptr<Scalar_datatype> const Scalar_datatype::cv_type_for_v<float>;
 
extern template std::shared_ptr<Scalar_datatype> const Scalar_datatype::cv_type_for_v<double>;
 
} // namespace PDI
 
#endif // PDI_SCALAR_DATATYPE_H_