Package com.puppycrawl.tools.checkstyle.checks.javadoc

Class JavadocLeadingAsteriskAlignCheck

java.lang.Object

com.puppycrawl.tools.checkstyle.AbstractAutomaticBean

com.puppycrawl.tools.checkstyle.api.AbstractViolationReporter

com.puppycrawl.tools.checkstyle.api.AbstractCheck

com.puppycrawl.tools.checkstyle.checks.javadoc.AbstractJavadocCheck

com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocLeadingAsteriskAlignCheck

All Implemented Interfaces:

Configurable, Contextualizable

public class JavadocLeadingAsteriskAlignCheck
extends AbstractJavadocCheck

Checks the alignment of leading asterisks in a Javadoc comment. The Check ensures that leading asterisks are aligned vertically under the first asterisk ( * ) of opening Javadoc tag. The alignment of closing Javadoc tag ( */ ) is also checked. If a closing Javadoc tag contains non-whitespace character before it then it's alignment will be ignored. If the ending javadoc line contains a leading asterisk, then that leading asterisk's alignment will be considered, the closing Javadoc tag will be ignored.

If you're using tabs then specify the the tab width in the tabWidth property.

• Property violateExecutionOnNonTightHtml - Control when to print violations if the Javadoc being examined by this check violates the tight html rules defined at Tight-HTML Rules. Type is boolean. Default value is false.

Parent is com.puppycrawl.tools.checkstyle.TreeWalker

Violation Message Keys:

• javadoc.asterisk.indentation
• javadoc.missed.html.close
• javadoc.parse.rule.error
• javadoc.unclosedHtml
• javadoc.wrong.singleton.html.tag

Since:

10.18.0

Nested Class Summary

Nested classes/interfaces inherited from class com.puppycrawl.tools.checkstyle.AbstractAutomaticBean

AbstractAutomaticBean.OutputStreamOptions

Field Summary

Fields

Modifier and Type	Field	Description
private int	expectedColumnNumberTabsExpanded	Specifies the column number of starting block of the javadoc comment with tabs expanded.
private int	expectedColumnNumberWithoutExpandedTabs	Specifies the column number of the leading asterisk without tabs expanded.
private String[]	fileLines	Specifies the lines of the file being processed.
private int	javadocStartLineNumber	Specifies the line number of starting block of the javadoc comment.
static final String	MSG_KEY	A key is pointing to the warning message text in "messages.properties" file.

Fields inherited from class com.puppycrawl.tools.checkstyle.checks.javadoc.AbstractJavadocCheck

MSG_JAVADOC_MISSED_HTML_CLOSE, MSG_JAVADOC_PARSE_RULE_ERROR, MSG_JAVADOC_WRONG_SINGLETON_TAG, MSG_KEY_UNCLOSED_HTML_TAG

Constructor Summary

Constructors

Constructor	Description
JavadocLeadingAsteriskAlignCheck()

Method Summary

Modifier and Type	Method	Description
void	beginJavadocTree(DetailNode rootAst)	Called before the starting to process a tree.
private int	expandedTabs(String line, int columnNumber)	Processes and returns the column number of leading asterisk with tabs expanded.
void	finishJavadocTree(DetailNode rootAst)	Called after finished processing a tree.
private static Optional<Integer>	getAsteriskColumnNumber(String line)	Processes and returns an OptionalInt containing the column number of leading asterisk without tabs expanded.
int[]	getDefaultJavadocTokens()	Returns the default javadoc token types a check is interested in.
int[]	getRequiredJavadocTokens()	The javadoc tokens that this check must be registered for.
private static boolean	hasValidAlignment(int expectedColNumber, int asteriskColNumber)	Checks the column difference between expected column number and leading asterisk column number.
private void	logViolation(int lineNumber, int asteriskColNumber, int expectedColNumber)	Checks alignment of asterisks and logs violations.
void	visitJavadocToken(DetailNode ast)	Called to process a Javadoc token.

Methods inherited from class com.puppycrawl.tools.checkstyle.checks.javadoc.AbstractJavadocCheck

acceptJavadocWithNonTightHtml, beginTree, destroy, finishTree, getAcceptableJavadocTokens, getAcceptableTokens, getBlockCommentAst, getDefaultTokens, getRequiredTokens, init, isCommentNodesRequired, leaveJavadocToken, setJavadocTokens, setViolateExecutionOnNonTightHtml, visitToken

Methods inherited from class com.puppycrawl.tools.checkstyle.api.AbstractCheck

clearViolations, getFileContents, getFilePath, getLine, getLineCodePoints, getLines, getTabWidth, getTokenNames, getViolations, leaveToken, 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.AbstractAutomaticBean

configure, contextualize, getConfiguration, setupChild

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

MSG_KEY

public static final String MSG_KEY

A key is pointing to the warning message text in "messages.properties" file.

See Also:

• Constant Field Values

javadocStartLineNumber

private int javadocStartLineNumber

Specifies the line number of starting block of the javadoc comment.

expectedColumnNumberTabsExpanded

private int expectedColumnNumberTabsExpanded

Specifies the column number of starting block of the javadoc comment with tabs expanded.

expectedColumnNumberWithoutExpandedTabs

private int expectedColumnNumberWithoutExpandedTabs

Specifies the column number of the leading asterisk without tabs expanded.

fileLines

private String[] fileLines

Specifies the lines of the file being processed.

Constructor Details

JavadocLeadingAsteriskAlignCheck

public JavadocLeadingAsteriskAlignCheck()

Method Details

getDefaultJavadocTokens

public int[] getDefaultJavadocTokens()

Description copied from class: AbstractJavadocCheck

Returns the default javadoc token types a check is interested in.

Specified by:

getDefaultJavadocTokens in class AbstractJavadocCheck

Returns:

the default javadoc token types

See Also:

• JavadocTokenTypes

getRequiredJavadocTokens

public int[] getRequiredJavadocTokens()

Description copied from class: AbstractJavadocCheck

The javadoc tokens that this check must be registered for.

Overrides:

getRequiredJavadocTokens in class AbstractJavadocCheck

Returns:

the javadoc token set this must be registered for.

See Also:

• JavadocTokenTypes

beginJavadocTree

public void beginJavadocTree(DetailNode rootAst)

Description copied from class: AbstractJavadocCheck

Called before the starting to process a tree.

Overrides:

beginJavadocTree in class AbstractJavadocCheck

Parameters:

rootAst - the root of the tree

visitJavadocToken

public void visitJavadocToken(DetailNode ast)

Description copied from class: AbstractJavadocCheck

Called to process a Javadoc token.

Specified by:

visitJavadocToken in class AbstractJavadocCheck

Parameters:

ast - the token to process

finishJavadocTree

public void finishJavadocTree(DetailNode rootAst)

Description copied from class: AbstractJavadocCheck

Called after finished processing a tree.

Overrides:

finishJavadocTree in class AbstractJavadocCheck

Parameters:

rootAst - the root of the tree

expandedTabs

private int expandedTabs(String line,
 int columnNumber)

Processes and returns the column number of leading asterisk with tabs expanded. Also sets 'expectedColumnNumberWithoutExpandedTabs' if the leading asterisk is present.

Parameters:

line - javadoc comment line

columnNumber - column number of leading asterisk

Returns:

column number of leading asterisk with tabs expanded

getAsteriskColumnNumber

private static Optional<Integer> getAsteriskColumnNumber(String line)

Processes and returns an OptionalInt containing the column number of leading asterisk without tabs expanded.

Parameters:

line - javadoc comment line

Returns:

asterisk's column number

logViolation

private void logViolation(int lineNumber,
 int asteriskColNumber,
 int expectedColNumber)

Checks alignment of asterisks and logs violations.

Parameters:

lineNumber - line number of current comment line

asteriskColNumber - column number of leading asterisk

expectedColNumber - column number of javadoc starting token

hasValidAlignment

private static boolean hasValidAlignment(int expectedColNumber,
 int asteriskColNumber)

Checks the column difference between expected column number and leading asterisk column number.

Parameters:

expectedColNumber - column number of javadoc starting token

asteriskColNumber - column number of leading asterisk

Returns:

true if the asterisk is aligned properly, false otherwise