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
{
    // Required to make_shared due to private ctor
    struct Shared_enabler;
    
    Datatype_sptr m_subtype;
    
    std::function<void* (void*, const void*)> m_copy;
    
    std::function<void(void*)> m_destroy;
    
public:
    Datatype_sptr subtype() 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;
    
    Datatype_sptr index(size_t index) const override;
    
    std::pair<void*, Datatype_sptr> index(size_t index, void* data) const override;
    
    Datatype_sptr slice(size_t start_index, size_t end_index) const override;
    
    std::pair<void*, Datatype_sptr> slice(size_t start_index, size_t end_index, void* data) const override;
    
    Datatype_sptr member(const char* name) const override;
    
    std::pair<void*, Datatype_sptr> member(const char* name, void* data) const override;
    
    Datatype_sptr dereference() const override;
    
    std::pair<void*, Datatype_sptr> dereference(void* data) const override;
    
    void destroy_data(void* ptr) const override;
    
    std::string debug_string() const override;
    
    bool operator== (const Datatype&) const override;
    
private:
    Pointer_datatype(Datatype_sptr subtype, const Attributes_map& attributes = {});
    
    Pointer_datatype(
        Datatype_sptr subtype,
        std::function<void* (void*, const void*)> copy,
        std::function<void(void*)> destroy,
        const Attributes_map& attributes = {}
    );
    
public:
    static std::shared_ptr<Pointer_datatype> make(Datatype_sptr subtype, const Attributes_map& attributes = {});
    
    static std::shared_ptr<Pointer_datatype> make(
        Datatype_sptr subtype,
        std::function<void* (void*, const void*)> copy,
        std::function<void(void*)> destroy,
        const Attributes_map& attributes = {}
    );
};
 
} // namespace PDI
 
#endif // PDI_POINTER_DATATYPE_H_