ReturnNullInsteadOfBooleanCheck (sevntu-checks 1.44.1 API)

java.lang.Object
- com.puppycrawl.tools.checkstyle.api.AutomaticBean
- - com.puppycrawl.tools.checkstyle.api.AbstractViolationReporter
  - - com.puppycrawl.tools.checkstyle.api.AbstractCheck
    - - com.github.sevntu.checkstyle.checks.coding.ReturnNullInsteadOfBooleanCheck

All Implemented Interfaces:

com.puppycrawl.tools.checkstyle.api.Configurable, com.puppycrawl.tools.checkstyle.api.Contextualizable
```
public class ReturnNullInsteadOfBooleanCheck
extends com.puppycrawl.tools.checkstyle.api.AbstractCheck
```
It is a bad practice to use Boolean type for ternary logic. It is intended to be used for binary logic.

Since:

1.8.0

Author:

Ivan Sopov

Nested Class Summary
- Nested classes/interfaces inherited from class com.puppycrawl.tools.checkstyle.api.AutomaticBean
  com.puppycrawl.tools.checkstyle.api.AutomaticBean.OutputStreamOptions

Field Summary

Fields
Modifier and Type Field Description

static String MSG_KEY
Warning message key.

Constructor Summary

Constructors
Constructor Description

ReturnNullInsteadOfBooleanCheck()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`beginTree(com.puppycrawl.tools.checkstyle.api.DetailAST rootAST)`
`int[]`	`getAcceptableTokens()`
`int[]`	`getDefaultTokens()`
`int[]`	`getRequiredTokens()`
`void`	`leaveToken(com.puppycrawl.tools.checkstyle.api.DetailAST ast)`
`void`	`visitToken(com.puppycrawl.tools.checkstyle.api.DetailAST ast)`

Methods inherited from class com.puppycrawl.tools.checkstyle.api.AbstractCheck
clearViolations, destroy, finishTree, getFileContents, getFilePath, getLine, getLineCodePoints, getLines, getTabWidth, getTokenNames, getViolations, init, isCommentNodesRequired, log, log, log, setFileContents, setTabWidth, setTokens

Methods inherited from class com.puppycrawl.tools.checkstyle.api.AbstractViolationReporter
finishLocalSetup, getCustomMessages, getId, getMessageBundle, getSeverity, getSeverityLevel, setId, setSeverity

Methods inherited from class com.puppycrawl.tools.checkstyle.api.AutomaticBean
configure, contextualize, getConfiguration, setupChild

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - MSG_KEY
```
public static final String MSG_KEY
```
    Warning message key.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - ReturnNullInsteadOfBooleanCheck
```
public ReturnNullInsteadOfBooleanCheck()
```
- Method Detail
  - getDefaultTokens
```
public int[] getDefaultTokens()
```
    Specified by:
    
    getDefaultTokens in class com.puppycrawl.tools.checkstyle.api.AbstractCheck
  - getAcceptableTokens
```
public int[] getAcceptableTokens()
```
    Specified by:
    
    getAcceptableTokens in class com.puppycrawl.tools.checkstyle.api.AbstractCheck
  - getRequiredTokens
```
public int[] getRequiredTokens()
```
    Specified by:
    
    getRequiredTokens in class com.puppycrawl.tools.checkstyle.api.AbstractCheck
  - beginTree
```
public void beginTree(com.puppycrawl.tools.checkstyle.api.DetailAST rootAST)
```
    Overrides:
    
    beginTree in class com.puppycrawl.tools.checkstyle.api.AbstractCheck
  - visitToken
```
public void visitToken(com.puppycrawl.tools.checkstyle.api.DetailAST ast)
```
    Overrides:
    
    visitToken in class com.puppycrawl.tools.checkstyle.api.AbstractCheck
  - leaveToken
```
public void leaveToken(com.puppycrawl.tools.checkstyle.api.DetailAST ast)
```
    Overrides:
    
    leaveToken in class com.puppycrawl.tools.checkstyle.api.AbstractCheck