.rubocop.yml

---
require:
  - ./Homebrew/rubocops.rb
  - rubocop-performance
  - rubocop-rails
  - rubocop-rspec
  - rubocop-sorbet

inherit_mode:
  merge:
    - Include
    - Exclude
    - AllowedMethods

AllCops:
  TargetRubyVersion: 2.6
  DisplayCopNames: false
  ActiveSupportExtensionsEnabled: true
  NewCops: enable
  Include:
    - "**/*.rbi"
  Exclude:
    - "Homebrew/sorbet/rbi/gems/**/*.rbi"
    - "Homebrew/sorbet/rbi/hidden-definitions/*.rbi"
    - "Homebrew/sorbet/rbi/todo.rbi"
    - "Homebrew/bin/*"
    - "Homebrew/vendor/**/*"
    - "Taps/*/*/vendor/**/*"

Cask/Desc:
  Description: "Ensure that the desc stanza conforms to various content and style checks."
  Enabled: true

Cask/HomepageUrlTrailingSlash:
  Description: "Ensure that the homepage url has a slash after the domain name."
  Enabled: true

Cask/NoDslVersion:
  Description: "Do not use the deprecated DSL version syntax in your cask header."
  Enabled: true

Cask/StanzaGrouping:
  Description: "Ensure that cask stanzas are grouped correctly. More info at https://docs.brew.sh/Cask-Cookbook#stanza-order"
  Enabled: true

Cask/StanzaOrder:
  Description: "Ensure that cask stanzas are sorted correctly. More info at https://docs.brew.sh/Cask-Cookbook#stanza-order"
  Enabled: true

FormulaAudit:
  Enabled: true

FormulaAuditStrict:
  Enabled: true

Homebrew:
  Enabled: true

# only used internally
Homebrew/MoveToExtendOS:
  Enabled: false

# `system` is a special case and aligns on second argument, so allow this for formulae.
Layout/ArgumentAlignment:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/Formula/**/*.rb"
    - "**/Formula/**/*.rb"

# this is a bit less "floaty"
Layout/CaseIndentation:
  EnforcedStyle: end

# significantly less indentation involved; more consistent
Layout/FirstArrayElementIndentation:
  EnforcedStyle: consistent
Layout/FirstHashElementIndentation:
  EnforcedStyle: consistent

# this is a bit less "floaty"
Layout/EndAlignment:
  EnforcedStyleAlignWith: start_of_line

# make our hashes consistent
Layout/HashAlignment:
  EnforcedHashRocketStyle: table
  EnforcedColonStyle: table

# Need to allow #: for external commands.
Layout/LeadingCommentSpace:
  Exclude:
    - "Taps/*/*/cmd/*.rb"

# GitHub diff UI wraps beyond 118 characters
Layout/LineLength:
  Max: 118
  # ignore manpage comments and long single-line strings
  AllowedPatterns:
    [
      "#: ",
      ' url "',
      ' mirror "',
      " plist_options ",
      ' appcast "',
      ' executable: "',
      ' font "',
      ' homepage "',
      ' name "',
      ' pkg "',
      ' pkgutil: "',
      "    sha256 cellar: ",
      "    sha256  ",
      "#{language}",
      "#{version.",
      ' "/Library/Application Support/',
      '"/Library/Caches/',
      '"/Library/PreferencePanes/',
      ' "~/Library/Application Support/',
      '"~/Library/Caches/',
      '"~/Application Support',
      " was verified as official when first introduced to the cask",
    ]

# conflicts with DSL-style path concatenation with `/`
Layout/SpaceAroundOperators:
  Enabled: false

# makes DSL usage ugly.
Layout/SpaceBeforeBrackets:
  Exclude:
    - "**/*_spec.rb"
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"

# favour parens-less DSL-style arguments
Lint/AmbiguousBlockAssociation:
  Enabled: false

Lint/DuplicateBranch:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"

# so many of these in formulae and can't be autocorrected
Lint/ParenthesesAsGroupedExpression:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/Formula/**/*.rb"
    - "**/Formula/**/*.rb"

# unused keyword arguments improve APIs
Lint/UnusedMethodArgument:
  AllowUnusedKeywordArguments: true

# These metrics didn't end up helping.
Metrics:
  Enabled: false

# Allow dashes in filenames.
Naming/FileName:
  Regex: !ruby/regexp /^[\w\@\-\+\.]+(\.rb)?$/

# Implicitly allow EOS as we use it everywhere.
Naming/HeredocDelimiterNaming:
  ForbiddenDelimiters:
    - END, EOD, EOF

Naming/InclusiveLanguage:
  CheckStrings: true
  FlaggedTerms:
    # TODO: If possible, make this stricter.
    slave:
      AllowedRegex:
        - "gitslave" # Used in formula `gitslave`
        - "log_slave" # Used in formula `ssdb`
        - "ssdb_slave" # Used in formula `ssdb`
        - "var_slave" # Used in formula `ssdb`
        - "patches/13_fix_scope_for_show_slave_status_data.patch" # Used in formula `mytop`

Naming/MethodName:
  AllowedPatterns:
    - '\A(fetch_)?HEAD\?\Z'

# allow those that are standard
# TODO: try to remove some of these
Naming/MethodParameterName:
  inherit_mode:
    merge:
      - AllowedNames
  AllowedNames:
    [
      "a",
      "b",
      "cc",
      "c1",
      "c2",
      "d",
      "e",
      "f",
      "ff",
      "fn",
      "id",
      "o",
      "p",
      "pr",
      "r",
      "rb",
      "s",
      "v",
    ]

# Both styles are used depending on context,
# e.g. `sha256` and `something_countable_1`.
Naming/VariableNumber:
  Enabled: false

# Does not hinder readability, so might as well enable it.
Performance/CaseWhenSplat:
  Enabled: true

# Makes code less readable for minor performance increases.
Performance/Caller:
  Enabled: false

# Makes code less readable for minor performance increases.
Performance/MethodObjectAsBlock:
  Enabled: false

Rails:
  # Selectively enable what we want.
  Enabled: false
  # Do not use ActiveSupport in RuboCops.
  Exclude:
    - "Homebrew/rubocops/**/*"

# These relate to ActiveSupport and not other parts of Rails.
Rails/ActiveSupportAliases:
  Enabled: true
Rails/Blank:
  Enabled: true
Rails/CompactBlank:
  Enabled: true
Rails/Delegate:
  Enabled: false # TODO
Rails/DelegateAllowBlank:
  Enabled: true
Rails/DurationArithmetic:
  Enabled: true
Rails/ExpandedDateRange:
  Enabled: true
Rails/Inquiry:
  Enabled: true
Rails/NegateInclude:
  Enabled: true
Rails/PluralizationGrammar:
  Enabled: true
Rails/Presence:
  Enabled: true
Rails/Present:
  Enabled: true
Rails/RelativeDateConstant:
  Enabled: true
Rails/SafeNavigation:
  Enabled: true
Rails/SafeNavigationWithBlank:
  Enabled: true
Rails/StripHeredoc:
  Enabled: true
Rails/ToFormattedS:
  Enabled: true

# Intentionally disabled as it doesn't fit with our code style.
RSpec/AnyInstance:
  Enabled: false
RSpec/FilePath:
  Enabled: false
RSpec/SubjectStub:
  Enabled: false

# TODO: try to enable these
RSpec/DescribeClass:
  Enabled: false
RSpec/MessageSpies:
  Enabled: false
RSpec/StubbedMock:
  Enabled: false

# TODO: try to reduce these
RSpec/ExampleLength:
  Max: 75
RSpec/MultipleExpectations:
  Max: 26
RSpec/NestedGroups:
  Max: 5
RSpec/MultipleMemoizedHelpers:
  Max: 12

# Annoying to have these autoremoved.
RSpec/Focus:
  AutoCorrect: false

# Try getting rid of these.
Sorbet/ConstantsFromStrings:
  Enabled: false

Sorbet/FalseSigil:
  Exclude:
    - "Taps/**/*"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"
    - "Homebrew/test/**/Casks/**/*.rb"

Sorbet/StrictSigil:
  inherit_mode:
    override:
      - Include
  Enabled: true
  Include:
    - "**/*.rbi"

# Conflicts with type signatures on `attr_*`s.
Style/AccessorGrouping:
  Enabled: false

# Require &&/|| instead of and/or
Style/AndOr:
  EnforcedStyle: always

# Avoid leaking resources.
Style/AutoResourceCleanup:
  Enabled: true

# This makes these a little more obvious.
Style/BarePercentLiterals:
  EnforcedStyle: percent_q

# make rspec formatting more flexible
Style/BlockDelimiters:
  BracesRequiredMethods:
    - "sig"
  Exclude:
    - "Homebrew/**/*_spec.rb"
    - "Homebrew/**/shared_examples/**/*.rb"

# TODO: remove this when possible.
Style/ClassVars:
  Exclude:
    - "**/developer/bin/*"

# Use consistent style for better readability.
Style/CollectionMethods:
  Enabled: true

# Don't allow cops to be disabled in casks and formulae.
Style/DisableCopsWithinSourceCodeDirective:
  Enabled: true
  Include:
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"

# The files actually scanned in this cop are in `Library/Homebrew/.rubocop.yml`.
Style/Documentation:
  Exclude:
    - "Taps/**/*"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"
    - "**/*.rbi"

# This is quite a large change, so don't enforce this yet for formulae.
# We should consider doing so in the future, but be aware of the impact on third-party taps.
Style/FetchEnvVar:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/Formula/**/*.rb"
    - "**/Formula/**/*.rb"

# Prefer tokens with type annotations for consistency
# between formatting numbers and strings.
Style/FormatStringToken:
  EnforcedStyle: annotated

# Not used for casks and formulae.
Style/FrozenStringLiteralComment:
  EnforcedStyle: always
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"
    - "Homebrew/test/**/Casks/**/*.rb"
    - "**/*.rbi"
    - "**/Brewfile"

# TODO: remove this when possible.
Style/GlobalVars:
  Exclude:
    - "**/developer/bin/*"

# potential for errors in formulae too high with this
Style/GuardClause:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"

# Allow for license expressions
Style/HashAsLastArrayItem:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/Formula/**/*.rb"
    - "**/Formula/**/*.rb"

# Zero-prefixed octal literals are widely used and understood.
Style/NumericLiteralPrefix:
  EnforcedOctalStyle: zero_only

# Only use this for numbers >= `1_000_000`.
Style/NumericLiterals:
  MinDigits: 7
  Strict: true
  Exclude:
    - "**/Brewfile"

# OpenStruct is a nice helper.
Style/OpenStructUse:
  Enabled: false

# Rescuing `StandardError` is an understood default.
Style/RescueStandardError:
  EnforcedStyle: implicit

# Returning `nil` is unnecessary.
Style/ReturnNil:
  Enabled: true

# We have no use for using `warn` because we
# are calling Ruby with warnings disabled.
Style/StderrPuts:
  Enabled: false

# so many of these in formulae and can't be autocorrected
Style/StringConcatenation:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"

# ruby style guide favorite
Style/StringLiterals:
  EnforcedStyle: double_quotes

# consistency with above
Style/StringLiteralsInInterpolation:
  EnforcedStyle: double_quotes

# Use consistent method names.
Style/StringMethods:
  Enabled: true

# An array of symbols is more readable than a symbol array
# and also allows for easier grepping.
Style/SymbolArray:
  EnforcedStyle: brackets

# make things a bit easier to read
Style/TernaryParentheses:
  EnforcedStyle: require_parentheses_when_complex

# Trailing commas make diffs nicer.
Style/TrailingCommaInArguments:
  EnforcedStyleForMultiline: comma
Style/TrailingCommaInArrayLiteral:
  EnforcedStyleForMultiline: comma
Style/TrailingCommaInHashLiteral:
  EnforcedStyleForMultiline: comma

# `unless ... ||` and `unless ... &&` are hard to mentally parse
Style/UnlessLogicalOperators:
  Enabled: true
  EnforcedStyle: forbid_logical_operators

# a bit confusing to non-Rubyists but useful for longer arrays
Style/WordArray:
  MinSize: 4

# would rather freeze too much than too little
Style/MutableConstant:
  EnforcedStyle: strict