com.puppycrawl.tools.checkstyle.checks.whitespace

Contains the Whitespace checks that are bundled with the main distribution.

Abstract class for checking the padding of parentheses.

Checks the padding of an empty for initializer; that is whether a space is required at an empty for initializer, or such spaces are forbidden.

Checks the padding of an empty for iterator; that is whether a space is required at an empty for iterator, or such spaces are forbidden.

Checks the padding between the identifier of a method definition, constructor definition, method call, or constructor invocation; and the left parenthesis of the parameter list.

Checks that there is no whitespace after a token. More specifically, it checks that it is not followed by whitespace, or (if linebreaks are allowed) all characters on the line after are whitespace.

Checks that there is no whitespace before a token. More specifically, it checks that it is not preceded with whitespace, or (if linebreaks are allowed) all characters on the line before are whitespace.

Checks line wrapping for operators.

Checks the padding of parentheses; that is whether a space is required after a left parenthesis and before a right parenthesis, or such spaces are forbidden, with the exception that it does not check for padding of the right parenthesis at an empty for iterator.

Reports tab characters ('\t') in the source code.

Checks the padding of parentheses for typecasts.

Checks that a token is followed by whitespace, with the exception that it does not check for whitespace after the semicolon of an empty for iterator.

Checks that a token is surrounded by whitespace.

By default the check will check the following operators: TokenTypes.LITERAL_ASSERT ASSERT , TokenTypes.ASSIGN ASSIGN , TokenTypes.BAND BAND , TokenTypes.BAND_ASSIGN BAND_ASSIGN , TokenTypes.BOR BOR , TokenTypes.BOR_ASSIGN BOR_ASSIGN , TokenTypes.BSR BSR , TokenTypes.BSR_ASSIGN BSR_ASSIGN , TokenTypes.BXOR BXOR , TokenTypes.BXOR_ASSIGN BXOR_ASSIGN , TokenTypes.COLON COLON , TokenTypes.DIV DIV , TokenTypes.DIV_ASSIGN DIV_ASSIGN , TokenTypes.EQUAL EQUAL , TokenTypes.GE GE , TokenTypes.GT GT , TokenTypes.LAND LAND , TokenTypes.LCURLY LCURLY , TokenTypes.LE LE , TokenTypes.LITERAL_CATCH LITERAL_CATCH , TokenTypes.LITERAL_DO LITERAL_DO , TokenTypes.LITERAL_ELSE LITERAL_ELSE , TokenTypes.LITERAL_FINALLY LITERAL_FINALLY , TokenTypes.LITERAL_FOR LITERAL_FOR , TokenTypes.LITERAL_IF LITERAL_IF , TokenTypes.LITERAL_RETURN LITERAL_RETURN , TokenTypes.LITERAL_SYNCHRONIZED LITERAL_SYNCHRONIZED , TokenTypes.LITERAL_TRY LITERAL_TRY , TokenTypes.LITERAL_WHILE LITERAL_WHILE , TokenTypes.LOR LOR , TokenTypes.LT LT , TokenTypes.MINUS MINUS , TokenTypes.MINUS_ASSIGN MINUS_ASSIGN , TokenTypes.MOD MOD , TokenTypes.MOD_ASSIGN MOD_ASSIGN , TokenTypes.NOT_EQUAL NOT_EQUAL , TokenTypes.PLUS PLUS , TokenTypes.PLUS_ASSIGN PLUS_ASSIGN , TokenTypes.QUESTION QUESTION , TokenTypes.RCURLY RCURLY , TokenTypes.SL SL , TokenTypes.SLIST SLIST , TokenTypes.SL_ASSIGN SL_ASSIGN , TokenTypes.SR SR , TokenTypes.SR_ASSIGN SR_ASSIGN , TokenTypes.STAR STAR , TokenTypes.STAR_ASSIGN STAR_ASSIGN . TokenTypes.LITERAL_ASSERT LITERAL_ASSERT . TokenTypes.GENERIC_START GENERIC_START . TokenTypes.GENERIC_END GENERIC_END . TokenTypes.TYPE_EXTENSION_AND TYPE_EXTENSION_AND . TokenTypes.WILDCARD_TYPE WILDCARD_TYPE .

An example of how to configure the check is:

 <module name="WhitespaceAround"/>
 

An example of how to configure the check for whitespace only around assignment operators is:

 <module name="WhitespaceAround">
 <property name="tokens"
 value="ASSIGN,DIV_ASSIGN,PLUS_ASSIGN,MINUS_ASSIGN,STAR_ASSIGN,MOD_ASSIGN,SR_ASSIGN,BSR_ASSIGN,SL_ASSIGN,BXOR_ASSIGN,BOR_ASSIGN,BAND_ASSIGN"/>
 </module>
 

In addition, this check can be configured to allow empty method and/or constructor bodies.