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

Class NullCheckToOptionalOfNullable

java.lang.Object

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

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

eu.solven.cleanthat.engine.java.refactorer.AJavaparserStmtMutator

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

All Implemented Interfaces:

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

public class NullCheckToOptionalOfNullable
extends AJavaparserStmtMutator

Turns `if (s != null) {...}` into `Optional.ofNullable(s).ifPresent(...)` BEWARE This case of application should be restricted, as a simple null-check is often simpler than an `Optional.ofNullable`, especially if the `thenStmt` does not depends on the nullable variable.

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
NullCheckToOptionalOfNullable()

Method Summary

Modifier and Type	Method	Description
Set<String>	getTags()
String	minimalJavaVersion()
protected boolean	processStatement(NodeAndSymbolSolver<com.github.javaparser.ast.stmt.Statement> stmt)

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

processNotRecursively, replaceStatement

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

NullCheckToOptionalOfNullable

public NullCheckToOptionalOfNullable()

Method Details

minimalJavaVersion

public String minimalJavaVersion()

getTags

public Set<String> getTags()

processStatement

protected boolean processStatement(NodeAndSymbolSolver<com.github.javaparser.ast.stmt.Statement> stmt)

Overrides:

processStatement in class AJavaparserStmtMutator