Package com.puppycrawl.tools.checkstyle.checks.whitespace

Class TypecastParenPadCheck

  • All Implemented Interfaces:
    Configurable, Contextualizable
    public class TypecastParenPadCheck
extends AbstractParenPadCheck

    Checks the policy on the padding of parentheses for typecasts. That is, whether a space is required after a left parenthesis and before a right parenthesis, or such spaces are forbidden.

    • Property option - Specify policy on how to pad parentheses. Type is com.puppycrawl.tools.checkstyle.checks.whitespace.PadOption. Default value is nospace.

    To configure the check: 

     <module name="TypecastParenPad"/>

    Example: 

     class Foo {

   float f1 = 3.14f;

   int n = ( int ) f1; // violation, space after left parenthesis and before right parenthesis

   double d = 1.234567;

   float f2 = (float ) d; // violation, space before right parenthesis

   float f3 = (float) d; // OK

   float f4 = ( float) d; // violation, space after left parenthesis

 }

    To configure the check to require spaces: 

     <module name="TypecastParenPad">
   <property name="option" value="space"/>
 </module>

    Example: 

     class Bar {

   double d1 = 3.14;

   int n = ( int ) d1; // OK

   int m = (int ) d1; // violation, no space after left parenthesis

   double d2 = 9.8;

   int x = (int) d2; // violation, no space after left parenthesis and before right parenthesis

   int y = ( int) d2; // violation, no space before right parenthesis

 }

    Parent is com.puppycrawl.tools.checkstyle.TreeWalker

    Violation Message Keys:

    • ws.followed
    • ws.notFollowed
    • ws.notPreceded
    • ws.preceded
    Since:
    3.2