DatabaseNameIterator.hh

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#ifndef CASM_DatabaseNameIterator
#define CASM_DatabaseNameIterator
 
#include <memory>
#include <set>
 
namespace CASM {
 
namespace DB {
 
template <typename ValueType, typename DatabaseType, typename ObjIterator>
class DatabaseNameIterator : public DatabaseIteratorBase<ValueType> {
 public:
  DatabaseNameIterator() {}
 
  std::string name() const override { return m_it->first; }
 
  std::unique_ptr<DatabaseIteratorBase<ValueType> > clone() const {
    return std::unique_ptr<DatabaseIteratorBase<ValueType> >(this->_clone());
  }
 
 private:
  friend DatabaseType;
 
  typedef
      typename std::map<std::string, ObjIterator>::const_iterator base_iterator;
 
  DatabaseNameIterator(base_iterator _it) : m_it(_it) {}
 
  base_iterator base() const { return m_it; }
 
  bool equal(const DatabaseIteratorBase<ValueType> &other) const override {
    return m_it == static_cast<const DatabaseNameIterator &>(other).m_it;
  }
 
  void increment() override { ++m_it; }
 
  const ValueType &dereference() const override { return *(m_it->second); }
 
  /*
  long distance_to(const DatabaseIteratorBase<ValueType> &other) const override
  { return std::distance(m_it, static_cast<const DatabaseNameIterator
  &>(other).m_it);
  }
  */
 
  DatabaseNameIterator *_clone() const override {
    return new DatabaseNameIterator(*this);
  }
 
  base_iterator m_it;
};
 
}  // namespace DB
}  // namespace CASM
 
#endif