/usr/include/dawgdic/dictionary-extra-unit.h is in libdawgdic-dev 0.4.5-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | #ifndef DAWGDIC_DICTIONARY_EXTRA_UNIT_H
#define DAWGDIC_DICTIONARY_EXTRA_UNIT_H
#include "base-types.h"
namespace dawgdic {
// Extra unit for building a dictionary.
class DictionaryExtraUnit {
 public:
  DictionaryExtraUnit() : lo_values_(0), hi_values_(0) {}
  void clear() {
    lo_values_ = hi_values_ = 0;
  }
  // Sets if a unit is fixed or not.
  void set_is_fixed() {
    lo_values_ |= 1;
  }
  // Sets an index of the next unused unit.
  void set_next(BaseType next) {
    lo_values_ = (lo_values_ & 1) | (next << 1);
  }
  // Sets if an index is used as an offset or not.
  void set_is_used() {
    hi_values_ |= 1;
  }
  // Sets an index of the previous unused unit.
  void set_prev(BaseType prev) {
    hi_values_ = (hi_values_ & 1) | (prev << 1);
  }
  // Reads if a unit is fixed or not.
  bool is_fixed() const {
    return (lo_values_ & 1) == 1;
  }
  // Reads an index of the next unused unit.
  BaseType next() const {
    return lo_values_ >> 1;
  }
  // Reads if an index is used as an offset or not.
  bool is_used() const {
    return (hi_values_ & 1) == 1;
  }
  // Reads an index of the previous unused unit.
  BaseType prev() const {
    return hi_values_ >> 1;
  }
 private:
  BaseType lo_values_;
  BaseType hi_values_;
  // Copyable.
};
}  // namespace dawgdic
#endif  // DAWGDIC_DICTIONARY_EXTRA_UNIT_H
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