com.puppycrawl.tools.checkstyle.checks.indentation

Class LambdaHandler

java.lang.Object

com.puppycrawl.tools.checkstyle.checks.indentation.AbstractExpressionHandler

com.puppycrawl.tools.checkstyle.checks.indentation.LambdaHandler

public class LambdaHandler
extends AbstractExpressionHandler

Handler for lambda expressions.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	isLambdaCorrectlyIndented Checks whether the lambda is correctly indented, this variable get its value from checking the lambda handler's indentation, and it is being used in aligning the lambda's children.

Constructor Summary

Constructors

Constructor and Description
LambdaHandler(IndentationCheck indentCheck, DetailAST ast, AbstractExpressionHandler parent) Construct an instance of this handler with the given indentation check, abstract syntax tree, and parent handler.

Method Summary

Modifier and Type	Method and Description
void	checkIndentation() Check the indentation of the expression we are handling.
private void	checkLineWrappedLambda(boolean isSwitchRuleLambda, int mainAstColumnNo) This method checks a line wrapped lambda, whether it is a lambda expression or switch rule lambda.
protected IndentLevel	getIndentImpl() Compute the indentation amount for this handler.
IndentLevel	getSuggestedChildIndent(AbstractExpressionHandler child) Indentation level suggested for a child element.
private boolean	isNonAcceptableIndent(int astColumnNo, IndentLevel level) Checks that given indent is acceptable or not.

Methods inherited from class com.puppycrawl.tools.checkstyle.checks.indentation.AbstractExpressionHandler

checkChildren, checkExpressionSubtree, checkLeftParen, checkModifiers, checkRightParen, checkWrappingIndentation, checkWrappingIndentation, expandedTabsColumnNo, findSubtreeAst, getBasicOffset, getBraceAdjustment, getFirstAstNode, getFirstLine, getFirstToken, getIndent, getIndentCheck, getLineStart, getLineStart, getMainAst, getParent, isOnStartOfLine, logError, logError, shouldIncreaseIndent

Methods inherited from class java.lang.Object

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

Field Detail

isLambdaCorrectlyIndented

private boolean isLambdaCorrectlyIndented

Checks whether the lambda is correctly indented, this variable get its value from checking the lambda handler's indentation, and it is being used in aligning the lambda's children. A true value depicts lambda is correctly aligned without giving any errors. This is updated to false where there is any Indentation error log.

Constructor Detail

LambdaHandler

public LambdaHandler(IndentationCheck indentCheck,
                     DetailAST ast,
                     AbstractExpressionHandler parent)

Construct an instance of this handler with the given indentation check, abstract syntax tree, and parent handler.

Parameters:

indentCheck - the indentation check

ast - the abstract syntax tree

parent - the parent handler

Method Detail

getSuggestedChildIndent

public IndentLevel getSuggestedChildIndent(AbstractExpressionHandler child)

Description copied from class: AbstractExpressionHandler

Indentation level suggested for a child element. Children don't have to respect this, but most do.

Overrides:

getSuggestedChildIndent in class AbstractExpressionHandler

Parameters:

child - child AST (so suggestion level can differ based on child type)

Returns:

suggested indentation for child

getIndentImpl

protected IndentLevel getIndentImpl()

Compute the indentation amount for this handler..

Overrides:

getIndentImpl in class AbstractExpressionHandler

Returns:

the expected indentation amount

checkIndentation

public void checkIndentation()

Description copied from class: AbstractExpressionHandler

Check the indentation of the expression we are handling.

Specified by:

checkIndentation in class AbstractExpressionHandler

isNonAcceptableIndent

private boolean isNonAcceptableIndent(int astColumnNo,
                                      IndentLevel level)

Checks that given indent is acceptable or not.

Parameters:

astColumnNo - indent value to check

level - indent level

Returns:

true if indent is not acceptable

checkLineWrappedLambda

private void checkLineWrappedLambda(boolean isSwitchRuleLambda,
                                    int mainAstColumnNo)

This method checks a line wrapped lambda, whether it is a lambda expression or switch rule lambda.

Parameters:

isSwitchRuleLambda - if mainAst is a switch rule lambda

mainAstColumnNo - the column number of the lambda we are checking