Class: RuboCop::Cop::Base

Inherits:
Object
  • Object
show all
Extended by:
NodePattern::Macros, AST::Sexp, ExcludeLimit
Includes:
AST::Sexp, AutocorrectLogic, IgnoredNode, Util
Defined in:
lib/rubocop/cop/base.rb

Overview

A scaffold for concrete cops.

The Cop::Base class is meant to be extended.

Cops track offenses and can autocorrect them on the fly.

A commissioner object is responsible for traversing the AST and invoking the specific callbacks on each cop.

First the callback ‘on_new_investigation` is called; if a cop needs to do its own processing of the AST or depends on something else.

Then callbacks like ‘on_def`, `on_send` (see AST::Traversal) are called with their respective nodes.

Finally the callback ‘on_investigation_end` is called.

Within these callbacks, cops are meant to call ‘add_offense` or `add_global_offense`. Use the `processed_source` method to get the currently processed source being investigated.

In case of invalid syntax / unparsable content, the callback ‘on_other_file` is called instead of all the other `on_…` callbacks.

Private methods are not meant for custom cops consumption, nor are any instance variables.

Direct Known Subclasses

RuboCop::Cop::Bundler::DuplicatedGem, RuboCop::Cop::Bundler::DuplicatedGroup, RuboCop::Cop::Bundler::GemComment, RuboCop::Cop::Bundler::GemFilename, RuboCop::Cop::Bundler::GemVersion, RuboCop::Cop::Bundler::InsecureProtocolSource, RuboCop::Cop::Bundler::OrderedGems, Cop, Gemspec::DependencyVersion, Gemspec::DeprecatedAttributeAssignment, Gemspec::DevelopmentDependencies, Gemspec::DuplicatedAssignment, Gemspec::OrderedDependencies, Gemspec::RequireMFA, Gemspec::RequiredRubyVersion, Gemspec::RubyVersionGlobalsUsage, InternalAffairs::CopDescription, InternalAffairs::CreateEmptyFile, InternalAffairs::EmptyLineBetweenExpectOffenseAndCorrection, InternalAffairs::ExampleDescription, InternalAffairs::ExampleHeredocDelimiter, InternalAffairs::InheritDeprecatedCopClass, InternalAffairs::LambdaOrProc, InternalAffairs::LocationExpression, InternalAffairs::LocationLineEqualityComparison, InternalAffairs::MethodNameEndWith, InternalAffairs::MethodNameEqual, InternalAffairs::NodeDestructuring, InternalAffairs::NodeFirstOrLastArgument, InternalAffairs::NodeMatcherDirective, InternalAffairs::NodeTypePredicate, InternalAffairs::NumblockHandler, InternalAffairs::OffenseLocationKeyword, InternalAffairs::ProcessedSourceBufferName, InternalAffairs::RedundantContextConfigParameter, InternalAffairs::RedundantDescribedClassAsSubject, InternalAffairs::RedundantExpectOffenseArguments, InternalAffairs::RedundantLetRuboCopConfigNew, InternalAffairs::RedundantLocationArgument, InternalAffairs::RedundantMessageArgument, InternalAffairs::RedundantMethodDispatchNode, InternalAffairs::RedundantSourceRange, InternalAffairs::SingleLineComparison, InternalAffairs::StyleDetectedApiUse, InternalAffairs::UndefinedConfig, InternalAffairs::UselessMessageAssertion, InternalAffairs::UselessRestrictOnSend, Layout::AccessModifierIndentation, Layout::ArgumentAlignment, Layout::ArrayAlignment, Layout::AssignmentIndentation, Layout::BeginEndAlignment, Layout::BlockAlignment, Layout::BlockEndNewline, Layout::CaseIndentation, Layout::ClassStructure, Layout::ClosingHeredocIndentation, Layout::ClosingParenthesisIndentation, Layout::CommentIndentation, Layout::ConditionPosition, Layout::DefEndAlignment, Layout::DotPosition, Layout::ElseAlignment, Layout::EmptyComment, Layout::EmptyLineAfterGuardClause, Layout::EmptyLineAfterMagicComment, Layout::EmptyLineAfterMultilineCondition, Layout::EmptyLineBetweenDefs, Layout::EmptyLines, Layout::EmptyLinesAroundAccessModifier, Layout::EmptyLinesAroundArguments, Layout::EmptyLinesAroundAttributeAccessor, Layout::EmptyLinesAroundBeginBody, Layout::EmptyLinesAroundBlockBody, Layout::EmptyLinesAroundClassBody, Layout::EmptyLinesAroundExceptionHandlingKeywords, Layout::EmptyLinesAroundMethodBody, Layout::EmptyLinesAroundModuleBody, Layout::EndAlignment, Layout::EndOfLine, Layout::ExtraSpacing, Layout::FirstArgumentIndentation, Layout::FirstArrayElementIndentation, Layout::FirstArrayElementLineBreak, Layout::FirstHashElementIndentation, Layout::FirstHashElementLineBreak, Layout::FirstMethodArgumentLineBreak, Layout::FirstMethodParameterLineBreak, Layout::FirstParameterIndentation, Layout::HashAlignment, Layout::HeredocArgumentClosingParenthesis, Layout::HeredocIndentation, Layout::IndentationConsistency, Layout::IndentationStyle, Layout::IndentationWidth, Layout::InitialIndentation, Layout::LeadingCommentSpace, Layout::LeadingEmptyLines, Layout::LineContinuationLeadingSpace, Layout::LineContinuationSpacing, Layout::LineEndStringConcatenationIndentation, Layout::LineLength, Layout::MultilineArrayBraceLayout, Layout::MultilineArrayLineBreaks, Layout::MultilineAssignmentLayout, Layout::MultilineBlockLayout, Layout::MultilineHashBraceLayout, Layout::MultilineHashKeyLineBreaks, Layout::MultilineMethodArgumentLineBreaks, Layout::MultilineMethodCallBraceLayout, Layout::MultilineMethodCallIndentation, Layout::MultilineMethodDefinitionBraceLayout, Layout::MultilineMethodParameterLineBreaks, Layout::MultilineOperationIndentation, Layout::ParameterAlignment, Layout::RedundantLineBreak, Layout::RescueEnsureAlignment, Layout::SingleLineBlockChain, Layout::SpaceAfterColon, Layout::SpaceAfterComma, Layout::SpaceAfterMethodName, Layout::SpaceAfterNot, Layout::SpaceAfterSemicolon, Layout::SpaceAroundBlockParameters, Layout::SpaceAroundEqualsInParameterDefault, Layout::SpaceAroundKeyword, Layout::SpaceAroundMethodCallOperator, Layout::SpaceAroundOperators, Layout::SpaceBeforeBlockBraces, Layout::SpaceBeforeBrackets, Layout::SpaceBeforeComma, Layout::SpaceBeforeComment, Layout::SpaceBeforeFirstArg, Layout::SpaceBeforeSemicolon, Layout::SpaceInLambdaLiteral, Layout::SpaceInsideArrayLiteralBrackets, Layout::SpaceInsideArrayPercentLiteral, Layout::SpaceInsideBlockBraces, Layout::SpaceInsideHashLiteralBraces, Layout::SpaceInsideParens, Layout::SpaceInsidePercentLiteralDelimiters, Layout::SpaceInsideRangeLiteral, Layout::SpaceInsideReferenceBrackets, Layout::SpaceInsideStringInterpolation, Layout::TrailingEmptyLines, Layout::TrailingWhitespace, Lint::AmbiguousAssignment, Lint::AmbiguousBlockAssociation, Lint::AmbiguousOperator, Lint::AmbiguousOperatorPrecedence, Lint::AmbiguousRange, Lint::AmbiguousRegexpLiteral, Lint::AssignmentInCondition, Lint::BigDecimalNew, Lint::BinaryOperatorWithIdenticalOperands, Lint::BooleanSymbol, Lint::CircularArgumentReference, Lint::ConstantDefinitionInBlock, Lint::ConstantOverwrittenInRescue, Lint::ConstantResolution, Lint::Debugger, Lint::DeprecatedClassMethods, Lint::DeprecatedConstants, Lint::DeprecatedOpenSSLConstant, Lint::DisjunctiveAssignmentInConstructor, Lint::DuplicateBranch, Lint::DuplicateCaseCondition, Lint::DuplicateElsifCondition, Lint::DuplicateHashKey, Lint::DuplicateMagicComment, Lint::DuplicateMatchPattern, Lint::DuplicateMethods, Lint::DuplicateRegexpCharacterClassElement, Lint::DuplicateRequire, Lint::DuplicateRescueException, Lint::EachWithObjectArgument, Lint::ElseLayout, Lint::EmptyBlock, Lint::EmptyClass, Lint::EmptyConditionalBody, Lint::EmptyEnsure, Lint::EmptyExpression, Lint::EmptyFile, Lint::EmptyInPattern, Lint::EmptyInterpolation, Lint::EmptyWhen, Lint::EnsureReturn, Lint::ErbNewArguments, Lint::FlipFlop, Lint::FloatComparison, Lint::FloatOutOfRange, Lint::FormatParameterMismatch, Lint::HashCompareByIdentity, Lint::HeredocMethodCallPosition, Lint::IdentityComparison, Lint::ImplicitStringConcatenation, Lint::IncompatibleIoSelectWithFiberScheduler, Lint::IneffectiveAccessModifier, Lint::InheritException, Lint::InterpolationCheck, Lint::ItWithoutArgumentsInBlock, Lint::LambdaWithoutLiteralBlock, Lint::LiteralAsCondition, Lint::LiteralAssignmentInCondition, Lint::LiteralInInterpolation, Lint::Loop, Lint::MissingCopEnableDirective, Lint::MissingSuper, Lint::MixedCaseRange, Lint::MixedRegexpCaptureTypes, Lint::MultipleComparison, Lint::NestedMethodDefinition, Lint::NestedPercentLiteral, Lint::NextWithoutAccumulator, Lint::NoReturnInBeginEndBlocks, Lint::NonAtomicFileOperation, Lint::NonDeterministicRequireOrder, Lint::NonLocalExitFromIterator, Lint::NumberConversion, Lint::NumberedParameterAssignment, Lint::OrAssignmentToConstant, Lint::OrderedMagicComments, Lint::OutOfRangeRegexpRef, Lint::ParenthesesAsGroupedExpression, Lint::PercentStringArray, Lint::PercentSymbolArray, Lint::RaiseException, Lint::RandOne, Lint::RedundantCopDisableDirective, Lint::RedundantCopEnableDirective, Lint::RedundantDirGlobSort, Lint::RedundantRegexpQuantifiers, Lint::RedundantRequireStatement, Lint::RedundantSafeNavigation, Lint::RedundantSplatExpansion, Lint::RedundantStringCoercion, Lint::RedundantWithIndex, Lint::RedundantWithObject, Lint::RefinementImportMethods, Lint::RegexpAsCondition, Lint::RequireParentheses, Lint::RequireRangeParentheses, Lint::RequireRelativeSelfPath, Lint::RescueException, Lint::RescueType, Lint::ReturnInVoidContext, Lint::SafeNavigationChain, Lint::SafeNavigationConsistency, Lint::SafeNavigationWithEmpty, Lint::ScriptPermission, Lint::SelfAssignment, Lint::SendWithMixinArgument, Lint::ShadowedArgument, Lint::ShadowedException, Lint::ShadowingOuterLocalVariable, Lint::StructNewOverride, Lint::SuppressedException, Lint::SymbolConversion, Lint::Syntax, Lint::ToEnumArguments, Lint::ToJSON, Lint::TopLevelReturnWithArgument, Lint::TrailingCommaInAttributeDeclaration, Lint::TripleQuotes, Lint::UnderscorePrefixedVariableName, Lint::UnexpectedBlockArity, Lint::UnifiedInteger, Lint::UnmodifiedReduceAccumulator, Lint::UnreachableCode, Lint::UnreachableLoop, Lint::UnusedBlockArgument, Lint::UnusedMethodArgument, Lint::UriEscapeUnescape, Lint::UriRegexp, Lint::UselessAccessModifier, Lint::UselessAssignment, Lint::UselessElseWithoutRescue, Lint::UselessMethodDefinition, Lint::UselessRescue, Lint::UselessRuby2Keywords, Lint::UselessSetterCall, Lint::UselessTimes, Lint::Void, Metrics::AbcSize, Metrics::BlockLength, Metrics::BlockNesting, Metrics::ClassLength, Metrics::CollectionLiteralLength, Metrics::CyclomaticComplexity, Metrics::MethodLength, Metrics::ModuleLength, Metrics::ParameterLists, Migration::DepartmentName, Naming::AccessorMethodName, Naming::AsciiIdentifiers, Naming::BinaryOperatorParameterName, Naming::BlockForwarding, Naming::BlockParameterName, Naming::ClassAndModuleCamelCase, Naming::ConstantName, Naming::FileName, Naming::HeredocDelimiterCase, Naming::HeredocDelimiterNaming, Naming::InclusiveLanguage, Naming::MemoizedInstanceVariableName, Naming::MethodName, Naming::MethodParameterName, Naming::PredicateName, Naming::RescuedExceptionsVariableName, Naming::VariableName, Naming::VariableNumber, Security::CompoundHash, Security::Eval, Security::IoMethods, Security::JSONLoad, Security::MarshalLoad, Security::Open, Security::YAMLLoad, Style::AccessModifierDeclarations, Style::AccessorGrouping, Style::Alias, Style::AndOr, Style::ArgumentsForwarding, Style::ArrayCoercion, Style::ArrayFirstLast, Style::ArrayIntersect, Style::ArrayJoin, Style::AsciiComments, Style::Attr, Style::AutoResourceCleanup, Style::BarePercentLiterals, Style::BeginBlock, Style::BisectedAttrAccessor, Style::BlockComments, Style::BlockDelimiters, Style::CaseEquality, Style::CaseLikeIf, Style::CharacterLiteral, Style::ClassAndModuleChildren, Style::ClassCheck, Style::ClassEqualityComparison, Style::ClassMethods, Style::ClassMethodsDefinitions, Style::ClassVars, Style::CollectionCompact, Style::CollectionMethods, Style::ColonMethodCall, Style::ColonMethodDefinition, Style::CombinableLoops, Style::CommandLiteral, Style::CommentAnnotation, Style::CommentedKeyword, Style::ComparableClamp, Style::ConcatArrayLiterals, Style::ConditionalAssignment, Style::ConstantVisibility, Style::Copyright, Style::DataInheritance, Style::DateTime, Style::DefWithParentheses, Style::Dir, Style::DirEmpty, Style::DisableCopsWithinSourceCodeDirective, Style::DocumentDynamicEvalDefinition, Style::Documentation, Style::DocumentationMethod, Style::DoubleCopDisableDirective, Style::DoubleNegation, Style::EachForSimpleLoop, Style::EachWithObject, Style::EmptyBlockParameter, Style::EmptyCaseCondition, Style::EmptyElse, Style::EmptyHeredoc, Style::EmptyLambdaParameter, Style::EmptyLiteral, Style::EmptyMethod, Style::Encoding, Style::EndBlock, Style::EndlessMethod, Style::EnvHome, Style::EvalWithLocation, Style::EvenOdd, Style::ExactRegexpMatch, Style::ExpandPathArguments, Style::ExplicitBlockArgument, Style::ExponentialNotation, Style::FetchEnvVar, Style::FileEmpty, Style::FileRead, Style::FileWrite, Style::FloatDivision, Style::For, Style::FormatString, Style::FormatStringToken, Style::FrozenStringLiteralComment, Style::GlobalStdStream, Style::GlobalVars, Style::GuardClause, Style::HashAsLastArrayItem, Style::HashConversion, Style::HashEachMethods, Style::HashExcept, Style::HashLikeCase, Style::HashSyntax, Style::HashTransformKeys, Style::HashTransformValues, Style::IdenticalConditionalBranches, Style::IfInsideElse, Style::IfUnlessModifier, Style::IfUnlessModifierOfIfUnless, Style::IfWithBooleanLiteralBranches, Style::IfWithSemicolon, Style::ImplicitRuntimeError, Style::InPatternThen, Style::InfiniteLoop, Style::InlineComment, Style::InverseMethods, Style::InvertibleUnlessCondition, Style::IpAddresses, Style::KeywordParametersOrder, Style::Lambda, Style::LambdaCall, Style::LineEndConcatenation, Style::MagicCommentFormat, Style::MapCompactWithConditionalBlock, Style::MapIntoArray, Style::MapToHash, Style::MapToSet, Style::MethodCallWithArgsParentheses, Style::MethodCallWithoutArgsParentheses, Style::MethodCalledOnDoEndBlock, Style::MethodDefParentheses, Style::MinMax, Style::MinMaxComparison, Style::MissingElse, Style::MissingRespondToMissing, Style::MixinGrouping, Style::MixinUsage, Style::ModuleFunction, Style::MultilineBlockChain, Style::MultilineIfModifier, Style::MultilineIfThen, Style::MultilineInPatternThen, Style::MultilineMemoization, Style::MultilineMethodSignature, Style::MultilineTernaryOperator, Style::MultilineWhenThen, Style::MultipleComparison, Style::MutableConstant, Style::NegatedIf, Style::NegatedIfElseCondition, Style::NegatedUnless, Style::NegatedWhile, Style::NestedFileDirname, Style::NestedModifier, Style::NestedParenthesizedCalls, Style::NestedTernaryOperator, Style::Next, Style::NilComparison, Style::NilLambda, Style::NonNilCheck, Style::Not, Style::NumberedParameters, Style::NumberedParametersLimit, Style::NumericLiteralPrefix, Style::NumericLiterals, Style::NumericPredicate, Style::ObjectThen, Style::OneLineConditional, Style::OpenStructUse, Style::OperatorMethodCall, Style::OptionHash, Style::OptionalArguments, Style::OptionalBooleanParameter, Style::OrAssignment, Style::ParallelAssignment, Style::ParenthesesAroundCondition, Style::PercentLiteralDelimiters, Style::PercentQLiterals, Style::PerlBackrefs, Style::PreferredHashMethods, Style::Proc, Style::QuotedSymbols, Style::RaiseArgs, Style::RandomWithOffset, Style::RedundantArgument, Style::RedundantArrayConstructor, Style::RedundantAssignment, Style::RedundantBegin, Style::RedundantCapitalW, Style::RedundantCondition, Style::RedundantConditional, Style::RedundantConstantBase, Style::RedundantCurrentDirectoryInPath, Style::RedundantDoubleSplatHashBraces, Style::RedundantEach, Style::RedundantException, Style::RedundantFetchBlock, Style::RedundantFileExtensionInRequire, Style::RedundantFilterChain, Style::RedundantFreeze, Style::RedundantHeredocDelimiterQuotes, Style::RedundantInitialize, Style::RedundantInterpolation, Style::RedundantLineContinuation, Style::RedundantParentheses, Style::RedundantPercentQ, Style::RedundantRegexpArgument, Style::RedundantRegexpCharacterClass, Style::RedundantRegexpConstructor, Style::RedundantRegexpEscape, Style::RedundantReturn, Style::RedundantSelf, Style::RedundantSelfAssignment, Style::RedundantSelfAssignmentBranch, Style::RedundantSort, Style::RedundantSortBy, Style::RedundantStringEscape, Style::RegexpLiteral, Style::RequireOrder, Style::RescueModifier, Style::RescueStandardError, Style::ReturnNil, Style::ReturnNilInPredicateMethodDefinition, Style::SafeNavigation, Style::Sample, Style::SelectByRegexp, Style::SelfAssignment, Style::Semicolon, Style::Send, Style::SendWithLiteralMethodName, Style::SignalException, Style::SingleArgumentDig, Style::SingleLineBlockParams, Style::SingleLineDoEndBlock, Style::SingleLineMethods, Style::SlicingWithRange, Style::SoleNestedConditional, Style::SpecialGlobalVars, Style::StabbyLambdaParentheses, Style::StaticClass, Style::StderrPuts, Style::StringChars, Style::StringConcatenation, Style::StringHashKeys, Style::StringLiterals, Style::StringLiteralsInInterpolation, Style::StringMethods, Style::Strip, Style::StructInheritance, Style::SuperArguments, Style::SuperWithArgsParentheses, Style::SwapValues, Style::SymbolArray, Style::SymbolLiteral, Style::SymbolProc, Style::TernaryParentheses, Style::TopLevelMethodDefinition, Style::TrailingBodyOnClass, Style::TrailingBodyOnMethodDefinition, Style::TrailingBodyOnModule, Style::TrailingCommaInArguments, Style::TrailingCommaInArrayLiteral, Style::TrailingCommaInBlockArgs, Style::TrailingCommaInHashLiteral, Style::TrailingMethodEndStatement, Style::TrailingUnderscoreVariable, Style::TrivialAccessors, Style::UnlessElse, Style::UnlessLogicalOperators, Style::UnpackFirst, Style::VariableInterpolation, Style::WhenThen, Style::WhileUntilDo, Style::WhileUntilModifier, Style::WordArray, Style::YAMLFileRead, Style::YodaCondition, Style::YodaExpression, Style::ZeroLengthPredicate

Defined Under Namespace

Classes: InvestigationReport

Constant Summary collapse

RESTRICT_ON_SEND =

List of methods names to restrict calls for ‘on_send` / `on_csend`

Set[].freeze

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from ExcludeLimit

exclude_limit

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #autocorrect_with_disable_uncorrectable?, #correctable?, #disable_uncorrectable?, #safe_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

silence_warnings

Constructor Details

#initialize(config = nil, options = nil) ⇒ Base

Returns a new instance of Base.



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# File 'lib/rubocop/cop/base.rb', line 156

def initialize(config = nil, options = nil)
  @config = config || Config.new
  @options = options || { debug: false }
  reset_investigation
end

Class Attribute Details

.gem_requirementsObject (readonly)

Returns the value of attribute gem_requirements.



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# File 'lib/rubocop/cop/base.rb', line 138

def gem_requirements
  @gem_requirements
end

Instance Attribute Details

#configObject (readonly)

Returns the value of attribute config.



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# File 'lib/rubocop/cop/base.rb', line 43

def config
  @config
end

#processed_sourceObject (readonly)

Returns the value of attribute processed_source.



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# File 'lib/rubocop/cop/base.rb', line 43

def processed_source
  @processed_source
end

Class Method Details

.autocorrect_incompatible_withArray<RuboCop::Cop::Base>

List of cops that should not try to autocorrect at the same time as this cop

Returns:



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# File 'lib/rubocop/cop/base.rb', line 59

def self.autocorrect_incompatible_with
  []
end

.badgeObject

Naming



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# File 'lib/rubocop/cop/base.rb', line 93

def self.badge
  @badge ||= Badge.for(name)
end

.callbacks_neededObject

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.



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# File 'lib/rubocop/cop/base.rb', line 319

def self.callbacks_needed
  @callbacks_needed ||= public_instance_methods.select do |m|
    m.start_with?(/on_|after_/) &&
      !Base.method_defined?(m) # exclude standard "callbacks" like 'on_begin_investigation'
  end
end

.cop_nameObject



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# File 'lib/rubocop/cop/base.rb', line 97

def self.cop_name
  badge.to_s
end

.departmentObject



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# File 'lib/rubocop/cop/base.rb', line 101

def self.department
  badge.department
end

.documentation_url(config = nil) ⇒ String?

Returns an url to view this cops documentation online. Requires ‘DocumentationBaseURL’ to be set for your department. Will follow the convention of RuboCops own documentation structure, overwrite this method to accommodate your custom layout.

Returns:



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# File 'lib/rubocop/cop/base.rb', line 70

def self.documentation_url(config = nil)
  Documentation.url_for(self, config)
end

.exclude_from_registryObject

Call for abstract Cop classes



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# File 'lib/rubocop/cop/base.rb', line 81

def self.exclude_from_registry
  Registry.global.dismiss(self)
end

.inherited(subclass) ⇒ Object



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# File 'lib/rubocop/cop/base.rb', line 74

def self.inherited(subclass)
  super
  subclass.instance_variable_set(:@gem_requirements, gem_requirements.dup)
  Registry.global.enlist(subclass)
end

.joining_forcesObject

Override and return the Force class(es) you need to join



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# File 'lib/rubocop/cop/base.rb', line 118

def self.joining_forces; end

.lint?Boolean

Returns:

  • (Boolean)


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# File 'lib/rubocop/cop/base.rb', line 105

def self.lint?
  department == :Lint
end

.match?(given_names) ⇒ Boolean

Returns true if the cop name or the cop namespace matches any of the given names.

Returns:

  • (Boolean)


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# File 'lib/rubocop/cop/base.rb', line 111

def self.match?(given_names)
  return false unless given_names

  given_names.include?(cop_name) || given_names.include?(badge.department_name)
end

.requires_gem(gem_name, *version_requirements) ⇒ Object

Register a version requirement for the given gem name. This cop will be skipped unless the target satisfies all requirements.

Parameters:



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# File 'lib/rubocop/cop/base.rb', line 151

def requires_gem(gem_name, *version_requirements)
  @gem_requirements[gem_name] = Gem::Requirement.new(version_requirements)
end

.support_autocorrect?Boolean

Returns if class supports autocorrect. It is recommended to extend AutoCorrector instead of overriding

Returns:

  • (Boolean)


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# File 'lib/rubocop/cop/base.rb', line 87

def self.support_autocorrect?
  false
end

.support_multiple_source?Boolean

Override if your cop should be called repeatedly for multiple investigations Between calls to ‘on_new_investigation` and `on_investigation_end`, the result of `processed_source` will remain constant. You should invalidate any caches that depend on the current `processed_source` in the `on_new_investigation` callback. If your cop does autocorrections, be aware that your instance may be called multiple times with the same `processed_source.path` but different content.

Returns:

  • (Boolean)


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# File 'lib/rubocop/cop/base.rb', line 129

def self.support_multiple_source?
  false
end

Instance Method Details

#active_support_extensions_enabled?Boolean

Returns:

  • (Boolean)


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# File 'lib/rubocop/cop/base.rb', line 272

def active_support_extensions_enabled?
  @config.active_support_extensions_enabled?
end

#add_global_offense(message = nil, severity: nil) ⇒ Object

Adds an offense that has no particular location. No correction can be applied to global offenses



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# File 'lib/rubocop/cop/base.rb', line 189

def add_global_offense(message = nil, severity: nil)
  severity = find_severity(nil, severity)
  message = find_message(nil, message)
  range = Offense::NO_LOCATION
  status = enabled_line?(range.line) ? :unsupported : :disabled
  current_offenses << Offense.new(severity, range, message, name, status)
end

#add_offense(node_or_range, message: nil, severity: nil, &block) ⇒ Object

Adds an offense on the specified range (or node with an expression) Unless that offense is disabled for this range, a corrector will be yielded to provide the cop the opportunity to autocorrect the offense. If message is not specified, the method ‘message` will be called.



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# File 'lib/rubocop/cop/base.rb', line 201

def add_offense(node_or_range, message: nil, severity: nil, &block)
  range = range_from_node_or_range(node_or_range)
  return unless current_offense_locations.add?(range)

  range_to_pass = callback_argument(range)

  severity = find_severity(range_to_pass, severity)
  message = find_message(range_to_pass, message)

  status, corrector = enabled_line?(range.line) ? correct(range, &block) : :disabled

  # Since this range may be generated from Ruby code embedded in some
  # template file, we convert it to location info in the original file.
  range = range_for_original(range)

  current_offenses << Offense.new(severity, range, message, name, status, corrector)
end

#always_autocorrect?Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean)


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# File 'lib/rubocop/cop/base.rb', line 343

def always_autocorrect?
  # `true` is the same as `'always'` for backward compatibility.
  ['always', true].include?(cop_config.fetch('AutoCorrect', 'always'))
end

#begin_investigation(processed_source, offset: 0, original: processed_source) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Called before any investigation



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# File 'lib/rubocop/cop/base.rb', line 329

def begin_investigation(processed_source, offset: 0, original: processed_source)
  @current_offenses = nil
  @current_offense_locations = nil
  @currently_disabled_lines = nil
  @processed_source = processed_source
  @current_corrector = nil

  # We need to keep track of the original source and offset,
  # because `processed_source` here may be an embedded code in it.
  @current_offset = offset
  @current_original = original
end

#callbacks_neededObject

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

rubocop:disable Layout/ClassStructure



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# File 'lib/rubocop/cop/base.rb', line 314

def callbacks_needed
  self.class.callbacks_needed
end

#config_to_allow_offensesObject



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# File 'lib/rubocop/cop/base.rb', line 252

def config_to_allow_offenses
  Formatter::DisabledConfigFormatter.config_to_allow_offenses[cop_name] ||= {}
end

#config_to_allow_offenses=(hash) ⇒ Object



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# File 'lib/rubocop/cop/base.rb', line 256

def config_to_allow_offenses=(hash)
  Formatter::DisabledConfigFormatter.config_to_allow_offenses[cop_name] = hash
end

#contextual_autocorrect?Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean)


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# File 'lib/rubocop/cop/base.rb', line 349

def contextual_autocorrect?
  cop_config.fetch('AutoCorrect', 'always') == 'contextual'
end

#cop_configObject

Configuration Helpers



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# File 'lib/rubocop/cop/base.rb', line 246

def cop_config
  # Use department configuration as basis, but let individual cop
  # configuration override.
  @cop_config ||= @config.for_badge(self.class.badge)
end

#cop_nameObject Also known as: name



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# File 'lib/rubocop/cop/base.rb', line 238

def cop_name
  @cop_name ||= self.class.cop_name
end

#excluded_file?(file) ⇒ Boolean

Returns:

  • (Boolean)


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# File 'lib/rubocop/cop/base.rb', line 285

def excluded_file?(file)
  !relevant_file?(file)
end

#external_dependency_checksumObject

This method should be overridden when a cop’s behavior depends on state that lives outside of these locations:

(1) the file under inspection
(2) the cop's source code
(3) the config (eg a .rubocop.yml file)

For example, some cops may want to look at other parts of the codebase being inspected to find violations. A cop may use the presence or absence of file ‘foo.rb` to determine whether a certain violation exists in `bar.rb`.

Overriding this method allows the cop to indicate to RuboCop’s ResultCache system when those external dependencies change, ie when the ResultCache should be invalidated.



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# File 'lib/rubocop/cop/base.rb', line 234

def external_dependency_checksum
  nil
end

#inspectObject

:nodoc:



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# File 'lib/rubocop/cop/base.rb', line 353

def inspect # :nodoc:
  "#<#{self.class.name}:#{object_id} @config=#{@config} @options=#{@options}>"
end

#message(_range = nil) ⇒ Object

Gets called if no message is specified when calling ‘add_offense` or `add_global_offense` Cops are discouraged to override this; instead pass your message directly



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# File 'lib/rubocop/cop/base.rb', line 183

def message(_range = nil)
  self.class::MSG
end

#offensesObject

Deprecated.

Make potential errors with previous API more obvious



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# File 'lib/rubocop/cop/base.rb', line 305

def offenses
  raise 'The offenses are not directly available; ' \
        'they are returned as the result of the investigation'
end

#on_investigation_endObject

Called after all on_… have been called When refining this method, always call ‘super`



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# File 'lib/rubocop/cop/base.rb', line 170

def on_investigation_end
  # Typically do nothing here
end

#on_new_investigationObject

Called before all on_… have been called When refining this method, always call ‘super`



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# File 'lib/rubocop/cop/base.rb', line 164

def on_new_investigation
  # Typically do nothing here
end

#on_other_fileObject

Called instead of all on_… callbacks for unrecognized files / syntax errors When refining this method, always call ‘super`



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# File 'lib/rubocop/cop/base.rb', line 176

def on_other_file
  # Typically do nothing here
end

#parse(source, path = nil) ⇒ Object

There should be very limited reasons for a Cop to do it’s own parsing



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# File 'lib/rubocop/cop/base.rb', line 290

def parse(source, path = nil)
  ProcessedSource.new(source, target_ruby_version, path, parser_engine: parser_engine)
end

#parser_engineObject



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# File 'lib/rubocop/cop/base.rb', line 264

def parser_engine
  @config.parser_engine
end

#readyObject

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Called between investigations



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# File 'lib/rubocop/cop/base.rb', line 296

def ready
  return self if self.class.support_multiple_source?

  self.class.new(@config, @options)
end

#relevant_file?(file) ⇒ Boolean

Returns:

  • (Boolean)


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# File 'lib/rubocop/cop/base.rb', line 276

def relevant_file?(file)
  return false unless target_satisfies_all_gem_version_requirements?
  return true unless @config.clusivity_config_for_badge?(self.class.badge)

  file == RuboCop::AST::ProcessedSource::STRING_SOURCE_NAME ||
    (file_name_matches_any?(file, 'Include', true) &&
      !file_name_matches_any?(file, 'Exclude', false))
end

#target_rails_versionObject



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# File 'lib/rubocop/cop/base.rb', line 268

def target_rails_version
  @config.target_rails_version
end

#target_ruby_versionObject



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# File 'lib/rubocop/cop/base.rb', line 260

def target_ruby_version
  @config.target_ruby_version
end