CLion 2018.2 Help

Refactoring Source Code

Refactoring is a process of improving your source code without creating a new functionality. Refactoring helps you keep your code solid, dry, and easy to maintain.

To perform refactoring, follow these general steps

  1. Select (or hover caret on) a symbol or code fragment to refactor. The set of available refactorings depends on your selection. You can select symbols in the following CLion components:
    • Project view
    • Structure tool window
    • Editor
  2. Do one of the following:
    • On the main Refactor menu or on the context menu of the selection, choose the desired refactoring or press the corresponding keyboard shortcut (if any).
    • On the main menu, choose Refactor | Refactor This, or press Ctrl+Shift+Alt+T, and then select the desired refactoring from the pop-up window.
  3. In the dialog box that opens, specify the refactoring options.
  4. To apply the changes immediately, depending on the refactoring type, click Refactor or OK.
  5. For certain refactorings, there is an option of previewing the changes prior to actually performing the refactoring. In such cases the Preview button is available in the corresponding dialog.

    To preview the potential changes and make the necessary adjustments, click Preview. CLion displays the changes that are going to be made on a dedicated tab of the Find tool window.

    One of the possible actions at this step is to exclude certain entries from the refactoring. To do so, select the desired entry in the list and press Delete.

    If conflicts are expected after the refactoring, CLion displays a dialog with a brief description of the encountered problems. If this is the case, do one of the following:

    • Ignore the conflicts by clicking the Continue button. As a result, the refactoring will be performed, however, this may lead to erroneous results.
    • Preview the conflicts by clicking the Show in View button. CLion shows all conflicting entries on the Conflicts tab in the Find tool window, enabling you to navigate to the problematic lines of code and to make the necessary fixes.
    • Cancel the refactoring and return to the editor.
  6. When you are satisfied with the proposed results, click Do Refactor to apply the changes.
Last modified: 16 June 2018

See Also