Class: Rubocop::Cop::AvoidPerlisms

Inherits:
Cop
  • Object
show all
Defined in:
lib/rubocop/cop/avoid_perlisms.rb

Constant Summary collapse

PREFERRED_VARS = 
{
  '$:' => '$LOAD_PATH',
  '$"' => '$LOADED_FEATURES',
  '$0' => '$PROGRAM_NAME',
  '$1' => 'MatchData',
  '$2' => 'MatchData',
  '$3' => 'MatchData',
  '$4' => 'MatchData',
  '$5' => 'MatchData',
  '$6' => 'MatchData',
  '$7' => 'MatchData',
  '$8' => 'MatchData',
  '$9' => 'MatchData',
  '$!' => '$ERROR_INFO',
  '$@' => '$ERROR_POSITION',
  '$;' => '$FIELD_SEPARATOR',
  '$,' => '$OUTPUT_FIELD_SEPARATOR',
  '$/' => '$INPUT_RECORD_SEPARATOR',
  '$\\' => 'OUTPUT_RECORD_SEPARATOR',
  '$.' => '$INPUT_LINE_NUMBER',
  '$_' => '$LAST_READ_LINE',
  '$>' => '$DEFAULT_OUTPUT',
  '$<' => '$DEFAULT_INPUT',
  '$$' => '$PROCESS_ID',
  '$?' => '$CHILD_STATUS',
  '$~' => '$LAST_MATCH_INFO',
  '$=' => '$IGNORECASE',
  '$*' => '$ARGV',
  '$&' => '$MATCH',
  '$`' => '$PREMATCH',
  '$\'' => 'POSTMATCH',
  '$+' => '$LAST_PAREN_MATCH'
}

Instance Attribute Summary

Attributes inherited from Cop

#correlations, #offences

Instance Method Summary collapse

Methods inherited from Cop

#add_offence, #has_report?, inherited, #initialize

Constructor Details

This class inherits a constructor from Rubocop::Cop::Cop

Instance Method Details

#inspect(file, source, tokens, sexp) ⇒ Object 



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

def inspect(file, source, tokens, sexp)
  each(:@gvar, sexp) do |s|
    global_var = s[1]

    if PREFERRED_VARS[global_var]
      add_offence(
        :convention,
        s[2].lineno,
        "Prefer #{PREFERRED_VARS[global_var]} over #{global_var}."
      )
    end
  end
end