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Class: RuboCop::Cop::Layout::SpaceAroundKeyword

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::Base, ::RuboCop::Cop::AutocorrectLogic, ::RuboCop::Cop::IgnoredNode, ::RuboCop::Util, RuboCop::AST::Sexp
Inherits: RuboCop::Cop::Base
Defined in: lib/rubocop/cop/layout/space_around_keyword.rb

Overview

Checks the spacing around the keywords.

Examples:

# bad
something 'test'do|x|
end

while(something)
end

something = 123if test

# good
something 'test' do |x|
end

while (something)
end

something = 123 if test

Constant Summary

::RuboCop::Cop::Base - Inherited

EMPTY_OFFENSES, RESTRICT_ON_SEND

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.

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 a 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

::RuboCop::Cop::Base - Inherited

#active_support_extensions_enabled?, #always_autocorrect?, #config, #config_to_allow_offenses, #config_to_allow_offenses=, #contextual_autocorrect?, #processed_source, #string_literals_frozen_by_default?, #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::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_gem_version

Returns a gems locked versions (i.e.
#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

#disable_offense, #disable_offense_at_end_of_line, #disable_offense_before_and_after, #disable_offense_with_eol_or_surround_comment, #heredoc_range, #max_line_length, #multiline_ranges, #multiline_string?,
#range_by_lines

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

::RuboCop::Cop::IgnoredNode - Included

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

Constructor Details

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

Instance Method Details

#accept_left_parenthesis?(range) ⇒ Boolean (private)

[ GitHub ] 

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 235



def accept_left_parenthesis?(range)
  ACCEPT_LEFT_PAREN.include?(range.source)
end


  








  

    #accept_left_square_bracket?(range)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 239



def accept_left_square_bracket?(range)
  ACCEPT_LEFT_SQUARE_BRACKET.include?(range.source)
end


  








  

    #accept_namespace_operator?(range)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 243



def accept_namespace_operator?(range)
  range.source == ACCEPT_NAMESPACE_OPERATOR
end


  








  

    #accepted_opening_delimiter?(range, char)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 228



def accepted_opening_delimiter?(range, char)
  return true unless char

  (accept_left_square_bracket?(range) && char == '[') ||
    (accept_left_parenthesis?(range) && char == '(')
end


  








  

    #check(node, locations, begin_keyword = DO)   (private)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 162



def check(node, locations, begin_keyword = DO)
  locations.each do |loc|
    next unless node.loc.respond_to?(loc)

    range = node.loc.public_send(loc)
    next unless range

    case loc
    when :begin then check_begin(node, range, begin_keyword)
    when :end then check_end(node, range, begin_keyword)
    else check_keyword(node, range)
    end
  end
end


  








  

    #check_begin(node, range, begin_keyword)   (private)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 177



def check_begin(node, range, begin_keyword)
  return if begin_keyword && !range.is?(begin_keyword)

  check_keyword(node, range)
end


  








  

    #check_end(node, range, begin_keyword)   (private)
  

  [ GitHub ]


  

  


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



def check_end(node, range, begin_keyword)
  return if begin_keyword == DO && !do?(node)
  return unless space_before_missing?(range)

  add_offense(range, message: format(MSG_BEFORE, range: range.source)) do |corrector|
    corrector.insert_before(range, ' ')
  end
end


  








  

    #check_keyword(node, range)   (private)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 196



def check_keyword(node, range)
  if space_before_missing?(range) && !preceded_by_operator?(node, range)
    add_offense(range, message: format(MSG_BEFORE, range: range.source)) do |corrector|
      corrector.insert_before(range, ' ')
    end
  end

  return unless space_after_missing?(range)

  add_offense(range, message: format(MSG_AFTER, range: range.source)) do |corrector|
    corrector.insert_after(range, ' ')
  end
end


  








  

    #do?(node)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 192



def do?(node)
  node.loc.begin&.is?(DO)
end


  








  

    #namespace_operator?(range, pos)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 251



def namespace_operator?(range, pos)
  range.source_buffer.source[pos, 2].start_with?(NAMESPACE_OPERATOR)
end


  








  

    #on_and(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 40



def on_and(node)
  check(node, [:operator].freeze) if node.keyword?
end


  








  

    #on_block(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 44



def on_block(node) # rubocop:disable InternalAffairs/NumblockHandler
  check(node, %i[begin end].freeze)
end


  








  

    #on_break(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 48



def on_break(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_case(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 52



def on_case(node)
  check(node, %i[keyword else].freeze)
end


  








  

    #on_case_match(node)  
  

  [ GitHub ]


  

  


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



def on_case_match(node)
  check(node, %i[keyword else].freeze)
end


  








  

    #on_defined?(node)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


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



def on_defined?(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_ensure(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 60



def on_ensure(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_for(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 64



def on_for(node)
  check(node, %i[begin end].freeze)
end


  








  

    #on_if(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 68



def on_if(node)
  check(node, %i[keyword else begin end].freeze, 'then')
end


  








  

    #on_if_guard(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 72



def on_if_guard(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_in_pattern(node)  
  

  [ GitHub ]


  

  


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



def on_in_pattern(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_kwbegin(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 80



def on_kwbegin(node)
  check(node, %i[begin end].freeze, nil)
end


  








  

    #on_match_pattern(node)  
  



  

    


Handle one-line pattern matching syntax (in) with Parser::Ruby27.



  



  [ GitHub ]


  

  


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



def on_match_pattern(node)
  return if target_ruby_version >= 3.0

  check(node, [:operator].freeze)
end


  








  

    #on_match_pattern_p(node)  
  



  

    


Handle one-line pattern matching syntax (in) with Parser::Ruby30.



  



  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 92



def on_match_pattern_p(node)
  check(node, [:operator].freeze)
end


  








  

    #on_next(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 96



def on_next(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_or(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 100



def on_or(node)
  check(node, [:operator].freeze) if node.keyword?
end


  








  

    #on_postexe(node)  
  

  [ GitHub ]


  

  


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



def on_postexe(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_preexe(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 108



def on_preexe(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_resbody(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 112



def on_resbody(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_rescue(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 116



def on_rescue(node)
  check(node, [:else].freeze)
end


  








  

    #on_return(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 120



def on_return(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_send(node)  
  

  [ GitHub ]


  

  


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



def on_send(node)
  check(node, [:selector].freeze) if node.prefix_not?
end


  








  

    #on_super(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 128



def on_super(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_unless_guard(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 136



def on_unless_guard(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_until(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 140



def on_until(node)
  check(node, %i[begin end keyword].freeze)
end


  








  

    #on_when(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 144



def on_when(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_while(node)  
  

  [ GitHub ]


  

  


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



def on_while(node)
  check(node, %i[begin end keyword].freeze)
end


  








  

    #on_yield(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 152



def on_yield(node)
  check(node, [:keyword].freeze)
end


  








  

    #on_zsuper(node)  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 132



def on_zsuper(node)
  check(node, [:keyword].freeze)
end


  








  

    #preceded_by_operator?(node, _range)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 255



def preceded_by_operator?(node, _range)
  # regular dotted method calls bind more tightly than operators
  # so we need to climb up the AST past them
  node.each_ancestor do |ancestor|
    return true if ancestor.operator_keyword? || ancestor.range_type?
    return false unless ancestor.send_type?
    return true if ancestor.operator_method?
  end
  false
end


  








  

    #safe_navigation_call?(range, pos)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 247



def safe_navigation_call?(range, pos)
  range.source_buffer.source[pos, 2].start_with?(SAFE_NAVIGATION)
end


  








  

    #space_after_missing?(range)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 217



def space_after_missing?(range)
  pos = range.end_pos
  char = range.source_buffer.source[pos]

  return false if accepted_opening_delimiter?(range, char)
  return false if safe_navigation_call?(range, pos)
  return false if accept_namespace_operator?(range) && namespace_operator?(range, pos)

  !/[\s;,#\\)}\].]/.match?(char)
end


  








  

    #space_before_missing?(range)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/cop/layout/space_around_keyword.rb', line 210



def space_before_missing?(range)
  pos = range.begin_pos - 1
  return false if pos.negative?

  !/[\s(|{\[;,*=]/.match?(range.source_buffer.source[pos])
end