datatype.h

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 * Copyright (C) 2020 Institute of Bioorganic Chemistry Polish Academy of Science (PSNC)
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#ifndef PDI_DATATYPE_H_
#define PDI_DATATYPE_H_

#include <memory>
#include <string>
#include <utility>
#include <vector>

#include <pdi/pdi_fwd.h>
#include <pdi/datatype_template.h>


namespace PDI {

class PDI_EXPORT Datatype:
    public Datatype_template
{
public:
    struct Accessor_base {
        virtual std::pair<void*, Datatype_uptr> access(const Array_datatype& type,
            void* from,
            std::vector<std::unique_ptr<Accessor_base>>::const_iterator remaining_begin,
            std::vector<std::unique_ptr<Accessor_base>>::const_iterator remaining_end) const;
            
        virtual std::pair<void*, Datatype_uptr> access(const Pointer_datatype& type,
            void* from,
            std::vector<std::unique_ptr<Accessor_base>>::const_iterator remaining_begin,
            std::vector<std::unique_ptr<Accessor_base>>::const_iterator remaining_end) const;
            
        virtual std::pair<void*, Datatype_uptr> access(const Record_datatype& type,
            void* from,
            std::vector<std::unique_ptr<Accessor_base>>::const_iterator remaining_begin,
            std::vector<std::unique_ptr<Accessor_base>>::const_iterator remaining_end) const;
            
        virtual std::string access_kind() const = 0;
        
        virtual std::unique_ptr<Accessor_base> clone() const = 0;
        
        virtual ~Accessor_base() = default;
    };
    
    ~Datatype() override;
    
    virtual Datatype_uptr clone_type() const = 0;
    
    virtual bool operator== (const Datatype& other) const = 0;
    
    bool operator!=(const Datatype& other) const;
    
    virtual Datatype_uptr densify() const = 0;
    
    virtual bool dense() const = 0;
    
    virtual size_t datasize() const = 0;
    
    virtual size_t buffersize() const = 0;
    
    virtual size_t alignment() const = 0;
    
    virtual bool simple() const = 0;
    
    virtual void* data_to_dense_copy(void* to, const void* from) const = 0;
    
    virtual void* data_from_dense_copy(void* to, const void* from) const = 0;
    
    std::pair<void*, Datatype_uptr> subaccess(void* from, const Accessor_base& accessor) const;
    
    std::pair<void*, Datatype_uptr> subaccess(void* from, const std::vector<std::unique_ptr<Accessor_base>>& accessors) const;
    
    virtual std::pair<void*, Datatype_uptr> subaccess_by_iterators(void* from,
        std::vector<std::unique_ptr<Accessor_base>>::const_iterator remaining_begin,
        std::vector<std::unique_ptr<Accessor_base>>::const_iterator remaining_end) const;
        
    virtual void destroy_data(void* ptr) const = 0;
    
    virtual std::string debug_string() const = 0;
    
};

} // namespace PDI

#endif // PDI_DATATYPE_H_