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Class: SyntaxSuggest::RipperErrors

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Ripper
Instance Chain:
self, Ripper
Inherits: Ripper
  • Object
Defined in: lib/syntax_suggest/ripper_errors.rb

Overview

Capture parse errors from Ripper

Prism returns the errors with their messages, but Ripper does not. To get them we must make a custom subclass.

Example:

puts RipperErrors.new(" def foo").call.errors
# => ["syntax error, unexpected end-of-input, expecting ';' or '\\n'"]

Instance Attribute Summary

Instance Method Summary

Instance Attribute Details

#errors (readonly)

[ GitHub ] 

  


# File 'lib/syntax_suggest/ripper_errors.rb', line 14



attr_reader :errors


  







Instance Method Details



  

    #call  
  

  [ GitHub ]


  

  


# File 'lib/syntax_suggest/ripper_errors.rb', line 30



def call
  @run_once ||= begin
    @errors = []
    parse
    true
  end
  self
end


  








  

    #compile_error(msg)  
  



  

    

Alias for #on_parse_error.


  



  [ GitHub ]


  

  


# File 'lib/syntax_suggest/ripper_errors.rb', line 28



alias_method :compile_error, :on_parse_error


  








  

    #on_alias_error(msg)  
  



  

    

Alias for #on_parse_error.


  



  [ GitHub ]


  

  


# File 'lib/syntax_suggest/ripper_errors.rb', line 24



alias_method :on_alias_error, :on_parse_error


  








  

    #on_assign_error(msg)  
  



  

    

Alias for #on_parse_error.


  



  [ GitHub ]


  

  


# File 'lib/syntax_suggest/ripper_errors.rb', line 25



alias_method :on_assign_error, :on_parse_error


  








  

    #on_class_name_error(msg)  
  



  

    

Alias for #on_parse_error.


  



  [ GitHub ]


  

  


# File 'lib/syntax_suggest/ripper_errors.rb', line 26



alias_method :on_class_name_error, :on_parse_error


  








  

    #on_param_error(msg)  
  



  

    

Alias for #on_parse_error.


  



  [ GitHub ]


  

  


# File 'lib/syntax_suggest/ripper_errors.rb', line 27



alias_method :on_param_error, :on_parse_error


  








  

    #on_parse_error(msg)  
    Also known as: #on_alias_error, #on_assign_error, #on_class_name_error, #on_param_error, #compile_error
  



  

    

Comes from ripper, called on every parse error, msg is a string


  



  [ GitHub ]


  

  


# File 'lib/syntax_suggest/ripper_errors.rb', line 19



def on_parse_error(msg)
  @errors ||= []
  @errors << msg
end