Work with source code

• To add a line after the current one, press ShiftEnter. RustRover moves the caret to the next line.

• To add a line before the current one, press CtrlAltEnter. RustRover moves the caret to the previous line.

• To duplicate a line, press Ctrl0D.

• To sort lines alphabetically in the whole file or in a code selection, go to Edit | Sort Lines or Edit | Reverse Lines. These actions might be helpful when you work with property files, data sets, text files, log files, and so on. .

• To delete a line, place the caret at the line you need and press Ctrl0Y.

• To join lines, place the caret at the line to which you want to join the other lines and press CtrlShift0J. Keep pressing the keys until all the needed elements are joined.

  You can also join string literals, a field or variable declaration, and a statement. Note that RustRover checks the code style settings and eliminates unwanted spaces and redundant characters.

• To split string literals into two parts, press Enter.

  RustRover splits the string and provides the correct syntax. You can also use the Break string on '\n' intention to split string literals. Press AltEnter or click to select this intention.

• To comment a line of code, place the caret at the appropriate line and press Ctrl0/. Press Ctrl0/ again on the same line to uncomment it.

• To move a line up or down, press AltShift0↑ or AltShift0↓ respectively.

• To move (swap) a code element to the left or to the right, place the caret at it, or select it and press CtrlAltShift0← for left or CtrlAltShift0→ for right.

• When you copy (Ctrl0C) or cut (Ctrl0X) a line without any code selected, the paste action will add the contents of the clipboard to above the current line, not at your caret.

  If you want to paste your copied code at the caret, select the Paste at the caret position option in the advanced settings.

• Place the caret at a line or a symbol, right-click to open the context menu, select Copy/Paste Special | Copy Reference. When you select the Copy Reference (CtrlAltShift0C) option, RustRover creates a reference string that includes the line number of the selected line or symbol. You can press Ctrl0V to paste the copied reference anywhere.

• RustRover keeps track of everything you copy to the clipboard. To paste from history, in the editor, from the context menu, select Copy/Paste Special | Paste from History (CtrlShift0V). In the dialog that opens, select your entry and click Paste.

  tip

  The default number of items stored in the clipboard history is 100.

• When you copy and paste code to the editor, RustRover displays the hidden (special) characters represented by their Unicode name abbreviation.

• In the editor, place the caret at the item you want to select and press Ctrl0W/CtrlShift0W to extend or shrink your selection.

  For example, in a plain text file, the selection starts within the whole word then extends to the sentence, paragraph, and so on.

• If you need just to highlight your braces, place the caret immediately after the block closing brace/bracket or before the block opening brace/bracket.

1. In the Settings dialog (CtrlAlt0S) , go to Editor | General | Smart Keys.

2. Select the Use "CamelHumps" words checkbox.

If you want to use double-click when selecting according to capitalization, make sure that the Honor "CamelHumps" words settings when selecting on double click checkbox right below is selected.

• In the editor, place the caret at the needed statement and press CtrlShift0↑ to move a statement up or CtrlShift0↓ to move a statement down. RustRover moves the selected statement performing a syntax check.

note

If moving of the statement is not allowed in the current context, the actions will be disabled.

• In the editor, press CtrlShiftEnter or from the main menu select Code | Complete Current Statement. RustRover inserts the required trailing comma automatically in structs, slices, and other composite literals. The caret is moved to the position where you can start typing the next statement.

1. Place the caret at the expression you want to remove or unwrap.

2. Press CtrlShiftDelete.

   RustRover shows a popup with all actions available in the current context. To make it easier to distinguish between statements to be extracted and statements to be removed, RustRover uses different background colors.

3. Select an action and press Enter.

• Move and copy code fragments by dragging them in the editor.

  • To move a code fragment, select it and drag the selection to the target location.

  • To copy a code selection, keeping Ctrl pressed, drag it to the target location.

    note

    The copy action might not be available in macOS since it can conflict with global OS shortcuts.

  The drag functionality is enabled by default. To disable it, in the Settings dialog (CtrlAlt0S) , go to Editor | General and clear the Move code fragments with drag-and-drop checkbox in the Mouse Control section.

• To toggle between the upper and lower case for the selected code fragment, press CtrlShift0U.

  Note that when you apply the toggle case action to the CamelCase name format, RustRover converts the name to the lower case.

• To comment or uncomment a code fragment, select it and press CtrlShift0/.

  To configure settings for commenting behavior, use options in the Comment Code section, on the Code Generation tab located in the language-specific pages under File | Settings | Editor | Code Style.

• To fold or unfold a code fragment, press CtrlNumPad -/CtrlNumPad +. RustRover folds or unfolds the current code fragment, for example, a single method.

• To collapse or expand all code fragments, press CtrlShiftNumPad -/CtrlShiftNumPad +.

  RustRover collapses or expands all fragments within the selection, or, if nothing is selected, all fragments in the current file, for example, all methods in a file.

• To collapse or expand code recursively, press CtrlAltNumPad -/CtrlAltNumPad +. RustRover collapses or expands the current fragment and all its subordinate regions within that fragment.

• To fold blocks of code, press CtrlShift0.. This action collapses the code fragment between the matched pair of curly braces {}, creates a custom folding region for that fragment, and makes it "foldable".

• To collapse or expand doc comments in the current file, in the main menu select Code | Folding | Expand doc comments/Collapse doc comments.

• To collapse or expand a custom code fragment, select it and press Ctrl0..

  You can fold or unfold any manually selected regions in code.

• To expand the current fragment and all the nested fragments, press CtrlNumPad *,01. You can expand the current fragment up to the specified nesting level (from 1 to 5).

• To expand all the collapsed fragments in the file, press CtrlShiftNumPad *,01. You can expand the collapsed fragments up to the specified nesting level (from 1 to 5).

You can collapse or expand code using the Surround With action.

1. In the editor, select a code fragment and press CtrlAlt0T.

2. From the popup menu, select <editor-fold...> Comments or region...endregion Comments.

3. Optionally, specify a description under which the collapsed fragment will be hidden.

4. To collapse or expand the created region, press Ctrl0..

5. To navigate to the created custom region, press CtrlAlt0..

You can hide the code folding arrow icons that appear in the gutter.

1. In the Settings dialog (CtrlAlt0S) , go to Editor | General | Code Folding.

2. Clear the Show code folding arrows checkbox.

   note

   This option is available only in the new UI. In the classic UI, use the Show code folding outline option instead.