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This document is intended for CleanThat developers and users (e.g. through Spotless).

We adhere to the keepachangelog format

[2.17 - Unreleased]

Fixed

  • ArithmethicAssignment should not assume String concatenation is symmetric.

[2.16] - 2023-05-24

Fixed

[2.15] - 2023-05-23

Added

  • ArithmeticOverFloats is introduced
  • CastMathOperandsBeforeAssignement is introduced
  • ArithmethicAssignment is introduced
  • UseOptionalOfNullable is introduced
  • SimplifyOptionalVariablesWithMap is introduced
  • OptionalWrappedIfToFilter is introduced
  • OptionalWrappedVariableToMap is introduced
  • ForEachIfBreakToStreamFindFirst is introduced
  • ForEachIfBreakElseToStreamTakeWhile is introduced
  • UsePredefinedStandardCharset is introduced
  • StringFromString is introduced
  • OptionalMapIdentity is introduced
  • StreamMapIdentity is introduced
  • StreamForEachNestingForLoopToFlatMap is introduced
  • StreamFlatMapStreamToFlatMap is introduced

[2.14] - 2023-04-06

Fixed

  • SimplifyBooleanInitialization will not produce invalid/corrupted initializer in case of negated initialization.
  • PrimitiveWrapperInstantiation will not confuse class named like a boxed type with a boxed type.
  • EnhancedForLoopToStreamAnyMatch will not accept a condition holding an AssignExpr

Changes

  • Each IMutator see its simple class name configured as default identifier.
  • FileSystemCodeProvider will log but not throw when loading a file with an incompatible charset.
  • StringReplaceAllWithQuotableInput covers more cases of quotable regexes.

Added

  • SimplifyBooleanExpression is introduced
  • StringReplaceAllWithQuotableInput is introduced
  • EnhancedForLoopToForEach is introduced
  • LoopIntRangeToIntStreamForEach is introduced
  • FileSystemCodeProvider now accepts a custom charset (default remains UTF-8)
  • SimplifyStreamVariablesWithMap is introduced

[2.13] - 2023-03-27

Fixed

  • PrimitiveWrapperInstantiation will not treat nested class as a boxed type anymore (e.g. java.awt.geom.Rectangle2D.Double)
  • SimplifyStartsWith is renamed from StringStartsWithChar given the existing PMD rule

Added

  • @SuppressCleanthat enables skipping Cleanthat for specific pieces of code
  • RemoveDoubleNegation is introduced
  • RemoveAllToClearCollection is introduced
  • SpotBugsMutators is introduced
  • CollectionIndexOfToContains is introduced
  • StringIndexOfToContains is introduced

[2.12] - 2023-03-23

Fixed

  • In many cases, the presence of comment will prevent a mutator, as comments would be lost in many cases
  • EnhancedForLoopToStreamAnyMatch will not produce invalid code in case of return over the forEach variable

Changes

  • UseUnderscoresInNumericLiterals now applies only over 5+ digits (like PMD default configuration)

Added

  • EnhancedForLoopToStreamCollect is introduced
  • @CaseNotYetImplemented enables preparing unitTests for future features or limitations

[2.11] - 2023-03-12

Fixed

  • S1602 is renamed RSPEC-1602
  • S1612 is renamed RSPEC-1612
  • LambdaReturnsSingleStatement now properly handles multiple arguments
  • LambdaReturnsSingleStatement may lose comments

Changes

  • UseStringIsEmpty is extracted from UseCollectionIsEmpty

Added

  • UnnecessaryLambdaEnclosingParameters is introduced but it is not functional
  • ErrorProneMutators is introduced
  • GuavaInlineStringsRepeat is introduced, and added in ErrorProneMutators
  • ObjectEqualsForPrimitives is introduced
  • ObjectsHashCodePrimitive is introduced
  • EnhancedForLoopToStreamAnyMatch is introduced
  • RedundantLogicalComplementsInStream is introduced
  • SimplifyBooleanInitialization is introduced
  • SafeButControversial is introduced

[2.10] - 2023-03-09

Fixed

  • AvoidUncheckedExceptionsInSignatures may encounter UnsolvedSymbolExceptions
  • AvoidInlineConditionals will not produce invalid var declarations.

Added

  • StringStartsWithChar is added in SafeButNotConsensual
  • $.repository.meta.full_clean_on_configuration_change is a new option to enable full repository cleaning on a configuration change. It is defaulted to false while previous behavior was as if it was always true.
  • EclipseStylesheetGenerator has a new option to discard ambiguous options (tryOptionsKeepingExistingFormat)

[2.9] - 2023-01-06

Added

  • StringStartsWithChar is an additional mutator
  • mvn cleanthat:apply is a new Mojo enabling one-shotting a rules over current directory README.MD

[2.8] - 2023-01-05

Fixed

  • ArraysDotStream requires the argument to be an Array to convert use Arrays.stream(). It may also rely on Stream.of for other cases
  • ArraysDotStream will apply only if the scope is Arrays
  • EmptyControlStatement will not break empty method definitions.
  • LiteralsFirstInComparisons better handles unresolved symbols.
  • LambdaIsMethodReference will not rely on T.class::cast if T is a Type bound (e.g. in <T> void method(...)).
  • LocalVariableTypeInference crashes lesss often on unresolved types

Changes

  • UseTextBlocks is temporarily dropped from SafeButNotConsensual as its results are too poor (javaparser/javaparser#3936).
  • LambdaReturnsSingleStatement is temporarily dropped from SafeButNotConsensual as its results are too poor (javaparser/javaparser#3938).
  • BoxedPrimitiveConstructor is renamed PrimitiveWrapperInstantiation, as it is the relevant PMD rule.

[2.7] - 2023-03-01

Fixed

  • LocalVariableTypeInference crashes lesss often on unresolved types
  • UnnecessaryModifier will not remove static from interface methods

Changes

  • LineEnding management is dropped from ILintFixer and ILintFixerWithPath
  • ModifierOrder is promoted in SafeAndConsensual
  • StringToString is promoted in SafeAndConsensual
  • UnnecessaryModifier does not strip anymore the static keyword of MethodDeclaration

Added

  • IMutator is generated into MUTATORS.generated.MD by RunGenerateDocumentation
  • UseUnderscoresInNumericLiterals is an additional PMD mutator
  • UseTextBlocks is an additional mutator
  • UnnecessaryImport is an additional mutator
  • BoxedPrimitiveConstructor is an additional mutator
  • LambdaIsMethodReference is an additional mutator
  • AvoidUncheckedExceptionsInSignatures is an additional mutator
  • PrimitiveBoxedForString is renamed into UnnecessaryBoxing
  • SafeButNotAndConsensual is an additional composite mutator

[2.6] - 2023-02-22

Changes

  • Add empty constructor in CompositeWalkableMutator
  • CompositeMutator.getIds() do not return underlying identifiers anymore

[2.5] - 2023-02-22

Fixed

  • Invalid reports of any IMutators as not being idempotent
  • CreateTempFilesUsingNioCases now handle a null directory
  • LocalVariableTypeInference does not replace assignments with different types (e.g. ArrayList assigned to a List variable)
  • Introduces IJavaparserMutator, paving the way for other mutators (from Eclipse Cleanup, OpenRewrite, etc)

[2.4] - 2023-02-19

Fixed

  • AllIncludingDraftCompositeMutators was misbehaving given MutatorsScanner

[2.3] - 2023-02-19

Fixed

  • CreateTempFilesUsingNioCases now handle a null directory

Added

  • Additional mutator: EmptyControlStatement turns {} into ``
  • Additional mutator: UnnecessaryModifier turns public static final into `` in interfaces
  • Implemented generic trimTrailingWhitespace, endWithNewline and index from Spotless
  • Composite Mutators can now be referenced by one of their identifier

Changes

  • OptionalNotEmpty is promoted in SafeAndConsensual
  • UnnecessaryModifier is promoted in SafeAndConsensual
  • UnnecessaryFullyQualifiedName is promoted in SafeAndConsensual
  • MarkdownFormatterFactory includes pattern is now defaulted to *.MD and *.md
  • JsonFormatterFactory includes pattern is now defaulted to *.json
  • BREAKING CHANGE isProductionReady has been removed, and replaced by a fully-functional includeDraft
  • BREAKING CHANGE A draft-mutator explicitly listed is applied even if includeDraft is false

[2.2] - 2023-01-07

Fixed

  • Fixes ImportOrderStep when the ordersFile parameters is used.

Added

  • Additional mutator: LocalVariableTypeInference turns int i = 10; into var i = 10;
  • Additional composite mutators: OptionalNotEmpty, PMDMutators, CheckStyleMutators and SonarMutators

Changes

  • CleanThat Robot will open a single Review-Request per protected-branch (instead of opening one for each dirty event, with a random). The naming convention is cleanthat/headfor-XXX-yyyy-MM-dd where XXX is the protected branch name and yyyy-MM-dd is current day.
  • Handle any source JDK version (with the help of JavaVersion)
  • Mutators can be included by their fully-qualified class name

[2.1] - 2023-01-07

Fixed

[2.0] - 2023-01-06

  • Spotless oriented release

Added

  • Added Spotless as an Engine
  • Additional mutator for PMD.ComparisonWithNaN
  • Additional mutator for JDK8 Streams: StreamAnyMatch

Changes

  • The concept of language has been replaced by engine. Instead of implementing language-specific formatters, CleanThat now targets wiring linter-engines (like Spotless).
  • POTENTIALLY BREAKING Most CleanThat linters has been dropped

[1.0] - 2021-08-12

Added

  • Initial release!