pointer_datatype.h

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#ifndef PDI_POINTER_DATATYPE_H_
#define PDI_POINTER_DATATYPE_H_

#include <functional>
#include <vector>

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


namespace PDI {

class PDI_EXPORT Pointer_datatype:
    public Datatype
{
    Datatype_uptr m_subtype;
    
    std::function<void* (void*, const void*)> m_copy;
    
    std::function<void(void*)> m_destroy;
    
public:
    class Accessor: public Accessor_base
    {
        std::string access_kind() const override;
        
    public:
        std::pair<void*, Datatype_uptr> access(const Pointer_datatype& pointer_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 override;
            
        std::unique_ptr<Accessor_base> clone() const override;
    };
    
    Pointer_datatype(Datatype_uptr subtype);
    
    Pointer_datatype(Datatype_uptr subtype, std::function<void* (void*, const void*)> copy, std::function<void(void*)> destroy);
    
    const Datatype& subtype() const;
    
    Datatype_template_uptr clone() const override;
    
    Datatype_uptr clone_type() const override;
    
    Datatype_uptr densify() const override;
    
    Datatype_uptr 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;
    
    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 override;
        
    void destroy_data(void* ptr) const override;
    
    std::string debug_string() const override;
    
    bool operator== (const Datatype&) const override;
    
    Datatype_uptr dereference() const;
    
};

} // namespace PDI

#endif // PDI_POINTER_DATATYPE_H_