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#ifndef SEARCH_HEADER__
#define SEARCH_HEADER__
// Header consisting of Score, Arity, and Note
#include "search/types.hh"
#include <stdint.h>
namespace search {
// Copying is shallow.
class Header {
public:
bool Valid() const { return base_; }
Score GetScore() const {
return *reinterpret_cast<const float*>(base_);
}
void SetScore(Score to) {
*reinterpret_cast<float*>(base_) = to;
}
bool operator<(const Header &other) const {
return GetScore() < other.GetScore();
}
bool operator>(const Header &other) const {
return GetScore() > other.GetScore();
}
Arity GetArity() const {
return *reinterpret_cast<const Arity*>(base_ + sizeof(Score));
}
Note GetNote() const {
return *reinterpret_cast<const Note*>(base_ + sizeof(Score) + sizeof(Arity));
}
void SetNote(Note to) {
*reinterpret_cast<Note*>(base_ + sizeof(Score) + sizeof(Arity)) = to;
}
uint8_t *Base() { return base_; }
const uint8_t *Base() const { return base_; }
protected:
Header() : base_(NULL) {}
explicit Header(void *base) : base_(static_cast<uint8_t*>(base)) {}
Header(void *base, Arity arity) : base_(static_cast<uint8_t*>(base)) {
*reinterpret_cast<Arity*>(base_ + sizeof(Score)) = arity;
}
static const std::size_t kHeaderSize = sizeof(Score) + sizeof(Arity) + sizeof(Note);
uint8_t *After() { return base_ + kHeaderSize; }
const uint8_t *After() const { return base_ + kHeaderSize; }
private:
uint8_t *base_;
};
} // namespace search
#endif // SEARCH_HEADER__
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