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Class: RuboCop::MagicComment Abstract

Relationships & Source Files
Namespace Children
Classes:
EditorComment, EmacsComment, SimpleComment, VimComment
Extension / Inclusion / Inheritance Descendants
Subclasses:
EditorComment, EmacsComment, SimpleComment, VimComment
Inherits: Object
Defined in: lib/rubocop/magic_comment.rb

Overview

This class is abstract.

parent of three different magic comment handlers

Parse different formats of magic comments.

Constant Summary

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(comment) ⇒ MagicComment

[ GitHub ] 

  


# File 'lib/rubocop/magic_comment.rb', line 32



def initialize(comment)
  @comment = comment
end


  







Class Method Details



  

    .parse(comment)  ⇒ MagicComment 
  



  

    


Detect magic comment format and pass it to the appropriate wrapper.



  





  
Parameters:





  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 23



def self.parse(comment)
  case comment
  when EmacsComment::REGEXP then EmacsComment.new(comment)
  when VimComment::REGEXP   then VimComment.new(comment)
  else
    SimpleComment.new(comment)
  end
end


  







Instance Attribute Details



  

    #any?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 36



def any?
  frozen_string_literal_specified? ||
    encoding_specified? ||
    shareable_constant_value_specified? ||
    typed_specified?
end


  








  

    #encoding_specified?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 104



def encoding_specified?
  specified?(encoding)
end


  








  

    #frozen_string_literal?  ⇒ Boolean  (readonly)
  



  

    


Does the magic comment enable the frozen string literal feature.






Test whether the frozen string literal value is true. Cannot
just return #frozen_string_literal since an invalid magic comment
like # frozen_string_literal: yes is possible and the truthy value
'yes' does not actually enable the feature



  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 55



def frozen_string_literal?
  frozen_string_literal == true
end


  








  

    #frozen_string_literal_specified?  ⇒ Boolean  (readonly)
  



  

    


Was a magic comment for the frozen string literal found?



  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 70



def frozen_string_literal_specified?
  specified?(frozen_string_literal)
end


  








  

    #shareable_constant_value_specified?  ⇒ Boolean  (readonly)
  



  

    


Was a shareable_constant_value specified?



  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 77



def shareable_constant_value_specified?
  specified?(shareable_constant_value)
end


  








  

    #typed_specified?  ⇒ Boolean  (readonly)
  



  

    


Was the Sorbet #typed sigil specified?



  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 111



def typed_specified?
  specified?(extract_typed)
end


  








  

    #valid?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 43



def valid?
  @comment.start_with?('#') && any?
end


  








  

    #valid_literal_value?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 59



def valid_literal_value?
  [true, false].include?(frozen_string_literal)
end


  








  

    #valid_shareable_constant_value?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 63



def valid_shareable_constant_value?
  %w[none literal experimental_everything experimental_copy].include?(shareable_constant_value)
end


  







Instance Method Details



  

    #extract(pattern)  ⇒ String?  (private)
  



  

    


Match the entire comment string with a pattern and take the first capture.



  





  
Parameters:


    
  
  • 
    pattern
    (Regexp)
  
    • 



Returns:


    
  
  • 
    (String)
—    
    

    if pattern matched
    

    
  
    • 
  
  • 
    (nil)
—    
    

    otherwise
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 131



def extract(pattern)
  @comment[pattern, :token]
end


  








  

    #frozen_string_literal  ⇒ Boolean, ...  (readonly)
  



  

    


Expose the frozen_string_literal value coerced to a boolean if possible.



  





  
Returns:


    
  
  • 
    (Boolean)
—    
    

    if value is true or false in any case
    

    
  
    • 
  
  • 
    (nil)
—    
    

    if frozen_string_literal comment isn’t found
    

    
  
    • 
  
  • 
    (String)
—    
    

    if comment is found but isn’t true or false
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 86



def frozen_string_literal
  return unless (setting = extract_frozen_string_literal)

  case setting.downcase
  when 'true'  then true
  when 'false' then false
  else
    setting
  end
end


  








  

    #shareable_constant_value  ⇒ String 
  



  

    


Expose the shareable_constant_value value coerced to a boolean if possible.



  





  
Returns:


    
  
  • 
    (String)
—    
    

    for shareable_constant_value config
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 100



def shareable_constant_value
  extract_shareable_constant_value
end


  








  

    #specified?(value)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 121



def specified?(value)
  !value.nil?
end


  








  

    #typed  
  

  [ GitHub ]


  

  


# File 'lib/rubocop/magic_comment.rb', line 115



def typed
  extract_typed
end