OpaqueString.hpp

#pragma once
#include <QString>
 
#include <string>
 
class OpaqueString
{
  friend bool operator==(const OpaqueString& lhs, const OpaqueString& rhs) noexcept
  {
    return lhs.impl == rhs.impl;
  }
 
  friend bool operator!=(const OpaqueString& lhs, const OpaqueString& rhs) noexcept
  {
    return lhs.impl != rhs.impl;
  }
 
  friend bool operator<(const OpaqueString& lhs, const OpaqueString& rhs) noexcept
  {
    return lhs.impl < rhs.impl;
  }
 
public:
  OpaqueString() = default;
 
  explicit OpaqueString(const char* str) noexcept
      : impl{str}
  {
  }
  explicit OpaqueString(std::string str) noexcept
      : impl{std::move(str)}
  {
  }
  explicit OpaqueString(const QString& str) noexcept
      : impl{str.toStdString()}
  {
  }
 
  explicit OpaqueString(const OpaqueString& str) noexcept
      : impl{str.impl}
  {
  }
  explicit OpaqueString(OpaqueString&& str) noexcept
      : impl{std::move(str.impl)}
  {
  }
 
  OpaqueString& operator=(const OpaqueString& str) noexcept
  {
    impl = str.impl;
    return *this;
  }
  OpaqueString& operator=(OpaqueString&& str) noexcept
  {
    impl = std::move(str.impl);
    return *this;
  }
 
protected:
  std::string impl;
};