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#ifndef MOZC_CONVERTER_SPARSE_CONNECTOR_H_
#define MOZC_CONVERTER_SPARSE_CONNECTOR_H_
#include "base/base.h"
#include "converter/connector_interface.h"
namespace mozc {
class SparseArrayImage;
class SparseConnector : public ConnectorInterface {
public:
SparseConnector(const char *ptr, size_t size);
virtual ~SparseConnector();
// magic number for SparseConnector image.
static const uint16 kSparseConnectorMagic = 0x4141;
// Special cost number to denote kInvalidCost for 1 byte cost encoding
// mode.
static const uint8 kInvalid1ByteCostValue = 255;
virtual int GetTransitionCost(uint16 rid, uint16 lid) const;
virtual int GetResolution() const;
// It is better to store rid in higher bit as loop for rid is outside
// of lid loop.
inline static uint32 EncodeKey(int lid, int rid) {
return (rid << 16) + lid;
}
private:
scoped_ptr<SparseArrayImage> array_image_;
const int16 *default_cost_;
// Resolution of cost value. This value should be 1 for 2bytes cost mode.
int resolution_;
DISALLOW_COPY_AND_ASSIGN(SparseConnector);
};
class SparseConnectorBuilder {
public:
static void Compile(const char *text_file,
const char *binary_file);
};
} // mozc
#endif // MOZC_CONVERTER_SPARSE_CONNECTOR_H_