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Class: RuboCop::Cop::Layout::EmptyLinesAroundAccessModifier

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::RuboCop::Cop::AutoCorrector, ::RuboCop::Cop::Base, ::RuboCop::ExcludeLimit, NodePattern::Macros, RuboCop::AST::Sexp
Instance Chain:
self, ::RuboCop::Cop::RangeHelp, ::RuboCop::Cop::ConfigurableEnforcedStyle, ::RuboCop::Cop::Base, ::RuboCop::Cop::AutocorrectLogic, ::RuboCop::Cop::IgnoredNode, ::RuboCop::Util, RuboCop::AST::Sexp
Inherits: RuboCop::Cop::Base
Defined in: lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb

Overview

Access modifiers should be surrounded by blank lines.

Examples:

EnforcedStyle: around (default)

# bad
class Foo
  def bar; end
  private
  def baz; end
end

# good
class Foo
  def bar; end

  private

  def baz; end
end

EnforcedStyle: only_before

# bad
class Foo
  def bar; end
  private
  def baz; end
end

# good
class Foo
  def bar; end

  private
  def baz; end
end

Constant Summary

::RuboCop::Cop::Base - Inherited

EMPTY_OFFENSES, RESTRICT_ON_SEND

::RuboCop::Cop::ConfigurableEnforcedStyle - Included

SYMBOL_TO_STRING_CACHE

::RuboCop::Cop::RangeHelp - Included

BYTE_ORDER_MARK, NOT_GIVEN

Class Attribute Summary

::RuboCop::Cop::AutoCorrector - Extended

support_autocorrect?

::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.
.builtin?

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

Cops (other than builtin) are encouraged to implement this.
.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

::RuboCop::Cop::ConfigurableEnforcedStyle - Included

#detected_style, #detected_style=, #no_acceptable_style?, #style_configured?

::RuboCop::Cop::Base - Inherited

#active_support_extensions_enabled?, #always_autocorrect?, #config, #config_to_allow_offenses, #config_to_allow_offenses=, #contextual_autocorrect?, #processed_source, #target_satisfies_all_gem_version_requirements?

::RuboCop::Cop::AutocorrectLogic - Included

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

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::ConfigurableEnforcedStyle - Included

#alternative_style, #alternative_styles, #ambiguous_style_detected,
#conflicting_styles_detected

Alias for ConfigurableEnforcedStyle#no_acceptable_style!.
#correct_style_detected, #no_acceptable_style!, #opposite_style_detected, #style, #style_detected, #style_parameter_name, #supported_styles, #unexpected_style_detected,
#unrecognized_style_detected

Alias for ConfigurableEnforcedStyle#no_acceptable_style!.

::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, #use_corrector

::RuboCop::Cop::AutocorrectLogic - Included

#disable_offense, #disable_offense_at_end_of_line, #disable_offense_before_and_after, #disable_offense_with_eol_or_surround_comment, #max_line_length,
#range_by_lines

Expand the given range to include all of any lines it covers.
#range_of_first_line, #surrounding_heredoc, #surrounding_percent_array

::RuboCop::Cop::IgnoredNode - Included

#ignore_node, #ignored_node?, #part_of_ignored_node?, #ignored_nodes

Constructor Details

.new(config = nil, options = nil) ⇒ EmptyLinesAroundAccessModifier

[ GitHub ] 

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 56



def initialize(config = nil, options = nil)
  super

  @block_line = nil
end


  







Instance Method Details



  

    #allowed_only_before_style?(node)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 115



def allowed_only_before_style?(node)
  if node.special_modifier?
    return true if processed_source[node.last_line] == 'end'
    return false if next_line_empty?(node.last_line)
  end

  previous_line_empty?(node.first_line)
end


  








  

    #block_start?(line)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


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



def block_start?(line)
  return false unless @block_line

  line == @block_line + 1
end


  








  

    #body_end?(line)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


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



def body_end?(line)
  return false unless @class_or_module_def_last_line

  line == @class_or_module_def_last_line - 1
end


  








  

    #class_def?(line)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 158



def class_def?(line)
  return false unless @class_or_module_def_first_line

  line == @class_or_module_def_first_line + 1
end


  








  

    #correct_next_line_if_denied_style(corrector, node, line)   (private)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 124



def correct_next_line_if_denied_style(corrector, node, line)
  case style
  when :around
    corrector.insert_after(line, "\n") unless next_line_empty?(node.last_line)
  when :only_before
    if next_line_empty?(node.last_line)
      range = next_empty_line_range(node)

      corrector.remove(range)
    end
  end
end


  








  

    #empty_lines_around?(node)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 154



def empty_lines_around?(node)
  previous_line_empty?(node.first_line) && next_line_empty?(node.last_line)
end


  








  

    #expected_empty_lines?(node)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 104



def expected_empty_lines?(node)
  case style
  when :around
    return true if empty_lines_around?(node)
  when :only_before
    return true if allowed_only_before_style?(node)
  end

  false
end


  








  

    #message(node)   (private)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 180



def message(node)
  case style
  when :around
    message_for_around_style(node)
  when :only_before
    message_for_only_before_style(node)
  end
end


  








  

    #message_for_around_style(node)   (private)
  

  [ GitHub ]


  

  


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



def message_for_around_style(node)
  send_line = node.first_line

  if block_start?(send_line) || class_def?(send_line)
    format(MSG_AFTER, modifier: node.loc.selector.source)
  else
    format(MSG_BEFORE_AND_AFTER, modifier: node.loc.selector.source)
  end
end


  








  

    #message_for_only_before_style(node)   (private)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 199



def message_for_only_before_style(node)
  modifier = node.loc.selector.source

  if next_line_empty?(node.last_line)
    format(MSG_AFTER_FOR_ONLY_BEFORE, modifier: modifier)
  else
    format(MSG_BEFORE_FOR_ONLY_BEFORE, modifier: modifier)
  end
end


  








  

    #next_empty_line_range(node)   (private)
  

  [ GitHub ]


  

  


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



def next_empty_line_range(node)
  source_range(processed_source.buffer, node.last_line + 1, 0)
end


  








  

    #next_line_empty?(last_send_line)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 148



def next_line_empty?(last_send_line)
  next_line = processed_source[last_send_line]

  body_end?(last_send_line) || next_line.blank?
end


  








  

    #on_block(node)  
    Also known as: #on_numblock
  

  [ GitHub ]


  

  


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



def on_block(node)
  @block_line = node.source_range.first_line
end


  








  

    #on_class(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 62



def on_class(node)
  @class_or_module_def_first_line = if node.parent_class
                                      node.parent_class.first_line
                                    else
                                      node.source_range.first_line
                                    end
  @class_or_module_def_last_line = node.source_range.last_line
end


  








  

    #on_module(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 71



def on_module(node)
  @class_or_module_def_first_line = node.source_range.first_line
  @class_or_module_def_last_line = node.source_range.last_line
end


  








  

    #on_numblock(node)  
  



  

    


Alias for #on_block.



  



  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 85



alias on_numblock on_block


  








  

    #on_sclass(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 76



def on_sclass(node)
  @class_or_module_def_first_line = node.identifier.source_range.first_line
  @class_or_module_def_last_line = node.source_range.last_line
end


  








  

    #on_send(node)  
  

  [ GitHub ]


  

  


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



def on_send(node) # rubocop:disable Metrics/CyclomaticComplexity
  return unless node.bare_access_modifier? &&
                !(node.parent&.block_type? || node.parent&.numblock_type?)
  return if expected_empty_lines?(node)

  message = message(node)
  add_offense(node, message: message) do |corrector|
    line = range_by_whole_lines(node.source_range)

    corrector.insert_before(line, "\n") unless previous_line_empty?(node.first_line)

    correct_next_line_if_denied_style(corrector, node, line)
  end
end


  








  

    #previous_line_empty?(send_line)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 141



def previous_line_empty?(send_line)
  previous_line = previous_line_ignoring_comments(processed_source, send_line)
  return true unless previous_line

  block_start?(send_line) || class_def?(send_line) || previous_line.blank?
end


  








  

    #previous_line_ignoring_comments(processed_source, send_line)   (private)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/empty_lines_around_access_modifier.rb', line 137



def previous_line_ignoring_comments(processed_source, send_line)
  processed_source[0..send_line - 2].reverse.find { |line| !comment_line?(line) }
end