25 Code Assists for Branching Statements

Branching statements such as if-else and switch are central elements in many programs. Restructuring them can increase the readability of your programs, often in combination with refactoring their conditions:

• Add {…} to if-else and loops

  Convert single statements into blocks.

• Convert && to if statement

  Convert condition && aFunction(); and similar expression statements into if statements.

• Convert conditional expression to if-else

  Convert a conditional expression to an if-else statement.

• Convert if-else into conditional expression

  Convert an if-else return or assignment expression into a conditional expression.

• Convert if-else to switch

  Convert a series of if-else statements with equality comparisons into a switch statement.

• Convert switch to if-else

  Change a switch statement into a series of if-else statements

• Inline variable occurrence

  Inline the value of a variable into one of its occurrences.

• Introduce early return / continue

  Change an if-statement into an early return or continue statement.

• Merge if-statement into preceding if-statement

  Merges two if-statements with the same body when possible.

• Merge nested if inside else into else-if

  Nested single if statements inside else blocks can be combined into else if statements.

• Merge nested if-statements

  Combine two nested if statements without additional operations into a single if-statement, using && to combine the conditions.

• Move duplicated first statement out of if-else

  Move a first statement that appears in both the if and the else block out of the if-else statement.

• Move if-else-if branches

  Move an if-else branch up or down.

• Move duplicated last statement out of if-else

  Move a last statement that appears in both the if and the else block out of the if-else statement.

• Move nested if

  Push down if statements into nested if statements and pull nested if statements up.

• Move switch case clause

  Move a case clause in a switch statement up or down.

• Remove {…} from if-else and loops

  Replace single statement blocks with their inner statement.

• Remove empty else block

  Remove an empty 'else' block from an 'if' statement.

• Remove empty if block

  Remove an empty 'if' block from an 'if' statement. Replaces it with the 'else' block when available.

• Remove redundant else if

  Remove redundant else-if conditions and unreachable else statements.

• Remove unnecessary conditional expression

  Replace a conditional expression with its condition or its result.

• Remove unnecessary else

  Lift the else content of an if-else with a return statement to the outer indentation level.

• Separate repeated condition into nested if-else

  Separate a repeated sub-condition that is fully covered into a nested if-else.

• Simplify switch statement

  Remove an unnecessary switch statement or replace it with its content.

• Split if statement

  Split the condition of an if statement on || or && when possible.