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#ifndef MARISA_KEY_H_
#define MARISA_KEY_H_
#include "marisa/base.h"
namespace marisa {
class Key {
public:
Key() : ptr_(NULL), length_(0), union_() {
union_.id = 0;
}
Key(const Key &key)
: ptr_(key.ptr_), length_(key.length_), union_(key.union_) {}
Key &operator=(const Key &key) {
ptr_ = key.ptr_;
length_ = key.length_;
union_ = key.union_;
return *this;
}
char operator[](std::size_t i) const {
MARISA_DEBUG_IF(i >= length_, MARISA_BOUND_ERROR);
return ptr_[i];
}
void set_str(const char *str) {
MARISA_DEBUG_IF(str == NULL, MARISA_NULL_ERROR);
std::size_t length = 0;
while (str[length] != '\0') {
++length;
}
MARISA_DEBUG_IF(length > MARISA_UINT32_MAX, MARISA_SIZE_ERROR);
ptr_ = str;
length_ = (UInt32)length;
}
void set_str(const char *ptr, std::size_t length) {
MARISA_DEBUG_IF((ptr == NULL) && (length != 0), MARISA_NULL_ERROR);
MARISA_DEBUG_IF(length > MARISA_UINT32_MAX, MARISA_SIZE_ERROR);
ptr_ = ptr;
length_ = (UInt32)length;
}
void set_id(std::size_t id) {
MARISA_DEBUG_IF(id > MARISA_UINT32_MAX, MARISA_SIZE_ERROR);
union_.id = (UInt32)id;
}
void set_weight(float weight) {
union_.weight = weight;
}
const char *ptr() const {
return ptr_;
}
std::size_t length() const {
return length_;
}
std::size_t id() const {
return union_.id;
}
float weight() const {
return union_.weight;
}
void clear() {
Key().swap(*this);
}
void swap(Key &rhs) {
marisa::swap(ptr_, rhs.ptr_);
marisa::swap(length_, rhs.length_);
marisa::swap(union_.id, rhs.union_.id);
}
private:
const char *ptr_;
UInt32 length_;
union Union {
UInt32 id;
float weight;
} union_;
};
} // namespace marisa
#endif // MARISA_KEY_H_
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