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Class: RuboCop::Cop::Lint::MissingCopEnableDirective

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::RuboCop::Cop::Base, ::RuboCop::ExcludeLimit, NodePattern::Macros, RuboCop::AST::Sexp
Instance Chain:
Inherits: RuboCop::Cop::Base
Defined in: lib/rubocop/cop/lint/missing_cop_enable_directive.rb

Overview

Checks that there is an # rubocop:enable …​ statement after a # rubocop:disable …​ statement. This will prevent leaving cop disables on wide ranges of code, that latter contributors to a file wouldn’t be aware of.

Examples:

# Lint/MissingCopEnableDirective:
#   MaximumRangeSize: .inf

# good
# rubocop:disable Layout/SpaceAroundOperators
x= 0
# rubocop:enable Layout/SpaceAroundOperators
# y = 1
# EOF

# bad
# rubocop:disable Layout/SpaceAroundOperators
x= 0
# EOF
# Lint/MissingCopEnableDirective:
#   MaximumRangeSize: 2

# good
# rubocop:disable Layout/SpaceAroundOperators
x= 0
# With the previous, there are 2 lines on which cop is disabled.
# rubocop:enable Layout/SpaceAroundOperators

# bad
# rubocop:disable Layout/SpaceAroundOperators
x= 0
x += 1
# Including this, that's 3 lines on which the cop is disabled.
# rubocop:enable Layout/SpaceAroundOperators

Constant Summary

::RuboCop::Cop::Base - Inherited

EMPTY_OFFENSES, RESTRICT_ON_SEND

::RuboCop::Cop::RangeHelp - Included

BYTE_ORDER_MARK, NOT_GIVEN

Class Attribute Summary

::RuboCop::Cop::Base - Inherited

.gem_requirements, .lint?,
.support_autocorrect?

Returns if class supports autocorrect.

.support_multiple_source?

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.

Class Method Summary

::RuboCop::Cop::Base - Inherited

.autocorrect_incompatible_with

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

.badge

Naming.

.callbacks_needed, .cop_name, .department,
.documentation_url

Returns an url to view this cops documentation online.

.exclude_from_registry

Call for abstract Cop classes.

.inherited,
.joining_forces

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

.match?

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

.new,
.requires_gem

Register a version requirement for the given gem name.

.restrict_on_send

::RuboCop::ExcludeLimit - Extended

exclude_limit

Sets up a configuration option to have an exclude limit tracked.

transform

Instance Attribute Summary

Instance Method Summary

::RuboCop::Cop::RangeHelp - Included

#add_range, #column_offset_between,
#contents_range

A range containing only the contents of a literal with delimiters (e.g.

#directions,
#effective_column

Returns the column attribute of the range, except if the range is on the first line and there’s a byte order mark at the beginning of that line, in which case 1 is subtracted from the column value.

#final_pos, #move_pos, #move_pos_str, #range_between, #range_by_whole_lines, #range_with_comments, #range_with_comments_and_lines, #range_with_surrounding_comma, #range_with_surrounding_space, #source_range

::RuboCop::Cop::Base - Inherited

#add_global_offense

Adds an offense that has no particular location.

#add_offense

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.

#begin_investigation

Called before any investigation.

#callbacks_needed,
#cop_config

Configuration Helpers.

#cop_name, #excluded_file?,
#external_dependency_checksum

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

#inspect,
#message

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.

#name

Alias for Base#cop_name.

#offenses,
#on_investigation_end

Called after all on_…​

#on_new_investigation

Called before all on_…​

#on_other_file

Called instead of all on_…​

#parse

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

#parser_engine,
#ready

Called between investigations.

#relevant_file?, #target_rails_version, #target_ruby_version, #annotate, #apply_correction, #attempt_correction,
#callback_argument

Reserved for Cop::Cop.

#complete_investigation

Called to complete an investigation.

#correct, #current_corrector,
#current_offense_locations

Reserved for Commissioner:

#current_offenses, #currently_disabled_lines, #custom_severity, #default_severity, #disable_uncorrectable, #enabled_line?, #file_name_matches_any?, #find_message, #find_severity, #range_for_original, #range_from_node_or_range,
#reset_investigation

Actually private methods.

#use_corrector

::RuboCop::Cop::AutocorrectLogic - Included

::RuboCop::Cop::IgnoredNode - Included

Constructor Details

This class inherits a constructor from RuboCop::Cop::Base

Instance Method Details

#acceptable_range?(cop, line_range) ⇒ Boolean (private)

[ GitHub ]

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

def acceptable_range?(cop, line_range)
  # This has to remain a strict inequality to handle
  # the case when max_range is Float::INFINITY
  return true if line_range.max - line_range.min < max_range + 2
  # This cop is disabled in the config, it is not expected to be re-enabled
  return true if line_range.min == CommentConfig::CONFIG_DISABLED_LINE_RANGE_MIN

  cop_class = RuboCop::Cop::Registry.global.find_by_cop_name cop
  if cop_class &&
     !processed_source.registry.enabled?(cop_class, config) &&
     line_range.max == Float::INFINITY
    return true
  end

  false
end

#department_enabled?(cop, comment) ⇒ Boolean (private)

[ GitHub ]

  
# File 'lib/rubocop/cop/lint/missing_cop_enable_directive.rb', line 104

def department_enabled?(cop, comment)
  DirectiveComment.new(comment).in_directive_department?(cop)
end

#each_missing_enable (private)

[ GitHub ]

  
# File 'lib/rubocop/cop/lint/missing_cop_enable_directive.rb', line 64

def each_missing_enable
  processed_source.disabled_line_ranges.each do |cop, line_ranges|
    line_ranges.each { |line_range| yield cop, line_range }
  end
end

#max_range (private)

[ GitHub ]

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

def max_range
  @max_range ||= cop_config['MaximumRangeSize']
end

#message(cop, comment, type = 'cop') (private)

[ GitHub ]

  
# File 'lib/rubocop/cop/lint/missing_cop_enable_directive.rb', line 91

def message(cop, comment, type = 'cop')
  if department_enabled?(cop, comment)
    type = 'department'
    cop = cop.split('/').first
  end

  if max_range == Float::INFINITY
    format(MSG, cop: cop, type: type)
  else
    format(MSG_BOUND, cop: cop, type: type, max_range: max_range)
  end
end

#on_new_investigation

[ GitHub ]

  
# File 'lib/rubocop/cop/lint/missing_cop_enable_directive.rb', line 51

def on_new_investigation
  each_missing_enable do |cop, line_range|
    next if acceptable_range?(cop, line_range)

    range = source_range(processed_source.buffer, line_range.min, (0..0))
    comment = processed_source.comment_at_line(line_range.begin)

    add_offense(range, message: message(cop, comment))
  end
end