Package eu.solven.cleanthat.engine.java.refactorer.mutators

Class CollectionToOptional

java.lang.Object

eu.solven.cleanthat.engine.java.refactorer.AJavaparserAstMutator

eu.solven.cleanthat.engine.java.refactorer.AJavaparserNodeMutator

eu.solven.cleanthat.engine.java.refactorer.AJavaparserExprMutator

eu.solven.cleanthat.engine.java.refactorer.mutators.CollectionToOptional

All Implemented Interfaces:

ICountMutatorIssues, IJavaparserAstMutator, IJavaparserNodeMutator, IMutator, IMutatorExternalReferences, IWalkingMutator<com.github.javaparser.ast.Node,com.github.javaparser.ast.Node>

public class CollectionToOptional
extends AJavaparserExprMutator

Turns `list.isEmpty() ? Optional.empty() : Optional.of(list.get(0))` into `list.stream().findFirst()`

Author:

Benoit Lacelle

Field Summary

Fields inherited from interface eu.solven.cleanthat.engine.java.refactorer.meta.IMutator

ID_NOOP, IS_PRODUCTION_READY

Constructor Summary

Constructors

Constructor	Description
CollectionToOptional()

Method Summary

Modifier and Type	Method	Description
Set<String>	getTags()
String	minimalJavaVersion()
protected boolean	processExpression(NodeAndSymbolSolver<com.github.javaparser.ast.expr.Expression> expr)

Methods inherited from class eu.solven.cleanthat.engine.java.refactorer.AJavaparserExprMutator

processNotRecursively, replaceExpression

Methods inherited from class eu.solven.cleanthat.engine.java.refactorer.AJavaparserNodeMutator

cancelDueToComment, getNbRemoveIssues, getNbReplaceIssues, isMethodReturnUsed, logJavaParserIssue, onMethodName, optResolved, replaceNode, tryRemove, tryReplace, tryReplace

Methods inherited from class eu.solven.cleanthat.engine.java.refactorer.AJavaparserAstMutator

getNbIdempotencyIssues, messageForIssueReporting, simulateOnClone, walkAst

Methods inherited from class java.lang.Object

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

Methods inherited from interface eu.solven.cleanthat.engine.java.refactorer.meta.IMutator

getId, getIds, isDraft, isJreOnly

Methods inherited from interface eu.solven.cleanthat.engine.java.refactorer.meta.IMutatorExternalReferences

checkstyleUrl, errorProneUrl, getCheckstyleId, getCleanthatId, getErrorProneId, getJSparrowId, getLegacyIds, getPmdId, getPmdIds, getSeeUrls, getSonarId, getSpotBugsId, jSparrowUrl, pmdUrl, sonarUrl, spotBugsUrl

Methods inherited from interface eu.solven.cleanthat.engine.java.refactorer.meta.IWalkingMutator

walkAstHasChanged

Constructor Details

CollectionToOptional

public CollectionToOptional()

Method Details

minimalJavaVersion

public String minimalJavaVersion()

getTags

public Set<String> getTags()

processExpression

protected boolean processExpression(NodeAndSymbolSolver<com.github.javaparser.ast.expr.Expression> expr)

Overrides:

processExpression in class AJavaparserExprMutator