CLion Nova refactorings

This refactoring creates a new field based on the selected expression, initializes it with the expression or from the constructor, and replaces the occurrences of the expression with references to the newly introduced field.

To invoke this refactoring, press CtrlAlt0F.

In the example below, we use this refactoring to replace two occurrences of the same string with a new private field and initialize it from the existing constructor:

#include <exception>
#include <iostream>
class ErrorHandler {
    ErrorHandler() {}
    public:
      void logError(std::exception&amp; e) {
        auto errorLogFIle = fopen("log.txt", "w");
        fprintf(errorLogFIle, "Something has failed: %s", e.what());
        fclose(errorLogFIle);
      }
      void printError(std::exception&amp; e) {
        printf("Something has failed: %s", e.what());
      }
};

#include <exception>
#include <iostream>
class ErrorHandler {
    ErrorHandler(): error_message("Something has failed: %s") {}
    public:
      void logError(std::exception&amp; e) {
        auto errorLogFIle = fopen("log.txt", "w");
        fprintf(errorLogFIle, error_message, e.what());
        fclose(errorLogFIle);
      }
      void printError(std::exception&amp; e) {
        printf(error_message, e.what());
      }
    private:
      const char* error_message;
};

This refactoring helps you create a namespace alias for a namespace usage and replace the currently selected usage or all usages in the current file with the alias. Depending on the selected usages, the namespace alias is declared in the closest possible scope to the usages.

In the example below, we use this refactoring to add a namespace alias for the SpaceOne::SpaceTwo namespace.

namespace SpaceOne
{
  namespace SpaceTwo
  {
    int ten = 10;
    inline void foo()
    {
      // do something
    }
  }
}
inline int test()
{
  SpaceOne::SpaceTwo::foo();
  return SpaceOne::SpaceTwo::ten;
}

namespace SpaceOne
{
  namespace SpaceTwo
  {
    int ten = 10;
    inline void foo()
    {
      // do something
    }
  }
}
inline int test()
{
  namespace s_two_alias = SpaceOne::SpaceTwo;
  s_two_alias::foo();
  return s_two_alias::ten;
}

The C++20 using enum syntax allows you to add all the enumerators from the target enumeration. As a result, you can omit repetitions of the enumeration name when using its member enumerators.

The Convert to Scoped Enum refactoring helps you convert a C-style enumeration declaration into a C++11 scoped enumeration.

To invoke it, place the caret at an enumerator, press CtrlAltShift0T and select Convert to Scoped Enum.