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Error Prone 2.3.3
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@cushon cushon released this 20 Mar 18:31
· 2956 commits to master since this release
v2.3.3
24f4d7d

New checks:

  • AssignmentToMock: Fields annotated with @mock should not be manually assigned to.
  • AutoValueImmutableFields: AutoValue recommends using immutable collections
  • CompareToZero: The result of #compareTo or #compare should only be compared to 0. It is an implementation detail whether a given type returns strictly the values {-1, 0, +1} or others.
  • DeduplicateConstants: This expression was previously declared as a constant; consider replacing this occurrence.
  • DiscardedPostfixExpression: The result of this unary operation on a lambda parameter is discarded
  • DuplicateMapKeys: Map#ofEntries will throw an IllegalArgumentException if there are any duplicate keys
  • EscapedEntity: HTML entities in @code/@literal tags will appear literally in the rendered javadoc.
  • InheritDoc: Invalid use of @inheritdoc.
  • InterfaceWithOnlyStatics: This interface only contains static fields and methods; consider making it a final class instead to prevent subclassing.
  • InvalidBlockTag: This tag is invalid.
  • InvalidInlineTag: This tag is invalid.
  • MissingSummary: A summary line is required on public/protected Javadocs.
  • MixedDescriptors: The field number passed into #getFieldByNumber belongs to a different proto to the Descriptor.
  • MixedMutabilityReturnType: This method returns both mutable and immutable collections or maps from different paths. This may be confusing for users of the method.
  • MockitoInternalUsage: org.mockito.internal.* is a private API and should not be used by clients
  • OptionalMapToOptional: Mapping to another Optional will yield a nested Optional. Did you mean flatMap?
  • OutlineNone: Setting CSS outline style to none or 0 (while not otherwise providing visual focus indicators) is inaccessible for users navigating a web page without a mouse.
  • PreconditionsCheckNotNullRepeated: Including the first argument of checkNotNull in the failure message is not useful, as it will always be null.
  • RedundantOverride: This override is redundant, and can be removed.
  • RefersToDaggerCodegen: Don't refer to Dagger's internal or generated code
  • RxReturnValueIgnored: Returned Rx objects must be checked. Ignoring a returned Rx value means it is never scheduled for execution
  • TreeToString: Tree#toString shouldn't be used for Trees deriving from the code being compiled, as it discards whitespace and comments.
  • TypeEquals: com.sun.tools.javac.code.Type doesn't override Object.equals and instances are not interned by javac, so testing types for equality should be done with Types#isSameType instead
  • UnescapedEntity: Javadoc is interpreted as HTML, so HTML entities such as &, <, > must be escaped.
  • UnusedMethod: Unused.
  • UnusedNestedClass: This nested class is unused, and can be removed.
  • UnusedVariable: Unused.

New date and time related checks:

  • JavaDurationGetSecondsGetNano: duration.getNano() only accesses the underlying nanosecond adjustment from the whole second.
  • JavaDurationWithNanos: Use of java.time.Duration.withNanos(int) is not allowed.
  • JavaDurationWithSeconds: Use of java.time.Duration.withSeconds(long) is not allowed.
  • JavaInstantGetSecondsGetNano: instant.getNano() only accesses the underlying nanosecond adjustment from the whole second.
  • JavaTimeDefaultTimeZone: java.time APIs that silently use the default system time-zone are not allowed.
  • JodaDurationConstructor: Use of new Duration(long) is not allowed. Please use Duration.millis(long) instead.
  • JodaDurationWithMillis: Use of duration.withMillis(long) is not allowed. Please use Duration.millis(long) instead.
  • JodaInstantWithMillis: Use of instant.withMillis(long) is not allowed. Please use new Instant(long) instead.
  • JodaNewPeriod: This may have surprising semantics, e.g. new Period(LocalDate.parse("1970-01-01"), LocalDate.parse("1970-02-02")).getDays() == 1, not 32.
  • JodaPlusMinusLong: Use of JodaTime's type.plus(long) or type.minus(long) is not allowed (where = {Duration,Instant,DateTime,DateMidnight}). Please use type.plus(Duration.millis(long)) or type.minus(Duration.millis(long)) instead.
  • JodaTimeConverterManager: Joda-Time's ConverterManager makes the semantics of DateTime/Instant/etc construction subject to global static state. If you need to define your own converters, use a helper.
  • JodaToSelf: Use of Joda-Time's DateTime.toDateTime(), Duration.toDuration(), Instant.toInstant(), Interval.toInterval(), and Period.toPeriod() are not allowed.
  • JodaWithDurationAddedLong: Use of JodaTime's type.withDurationAdded(long, int) (where = {Duration,Instant,DateTime}). Please use type.withDurationAdded(Duration.millis(long), int) instead.
  • TemporalAccessorGetChronoField: TemporalAccessor.get() only works for certain values of ChronoField.
  • TimeUnitConversionChecker: This TimeUnit conversion looks buggy: converting from a smaller unit to a larger unit (and passing a constant), converting to/from the same TimeUnit, or converting TimeUnits where the result is statically known to be 0 or 1 are all buggy patterns.
  • DurationFrom: Duration.from(Duration) returns itself; from(Period) throws a runtime exception.
  • DurationGetTemporalUnit: Duration.get() only works with SECONDS or NANOS.
  • DurationToLongTimeUnit: Unit mismatch when decomposing a Duration or Instant to call a <long, TimeUnit> API
  • InvalidZoneId: Invalid zone identifier. ZoneId.of(String) will throw exception at runtime.
  • PeriodFrom: Period.from(Period) returns itself; from(Duration) throws a runtime exception.
  • PeriodGetTemporalUnit: Period.get() only works with YEARS, MONTHS, or DAYS.
  • PeriodTimeMath: When adding or subtracting from a Period, Duration is incompatible.
  • ProtoDurationGetSecondsGetNano: getNanos() only accesses the underlying nanosecond-adjustment of the duration.
  • ProtoTimestampGetSecondsGetNano: getNanos() only accesses the underlying nanosecond-adjustment of the instant.
  • ProtoTruthMixedDescriptors: The arguments passed to ignoringFields are inconsistent with the proto which is the subject of the assertion.
  • TimeUnitMismatch: An value that appears to be represented in one unit is used where another appears to be required (e.g., seconds where nanos are needed)

API changes:

  • @BugPattern.category is no longer supported; prefer @BugPattern.tags as a means to apply general tags to checks.

Other changes:

  • Suppress checks thoroughly when -XepDisableWarningsInGeneratedCode is passed.
  • Make UnusedVariable match unused assignments too.
  • Handle static methods in InfiniteRecursion
  • Add common java.time types to ReturnValueIgnored.
  • ModifiedButNotUsed: match orphaned chains of proto/collection builders
  • Improve NarrowingCompoundAssignment's fixes for ternary
  • Allow suppressing AutoValueImmutableFields at the field level rather than just for the entire class.
  • Handle DateTimeFormat and DateTimeFormatter in MisusedWeekYear
  • Allow suppressing UnusedException on the CatchTree's VariableTree.
  • require constructors invoking a @MustBeClosed constructor to be marked @MustBeClosed too
  • support Android's @RecentlyXxx annotations and @CheckForNull in nullness analysis.
  • Match methods instead of classes in AutoValueImmutableFields checker.
  • Add a bunch more mutable types to the AutoValueImmutableFields matcher.
  • Fix bug in WellKnownMutability incorrectly identifying proto1 as proto2.
  • Don't flag java.lang.Object in EqualsHashCode check
  • Improve AutoValueFinalMethods check by adding more specific diagnostic at first matched method.
  • The NoAllocationChecker now requires the @NoAllocation annotation to be propagated to all overrides of a method that has the annotation, to reflect the contractual nature of the annotation.
  • Catch unescaped entities in Javadocs.
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