Class: Rubocop::Cop::Style::UnlessElse

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

Overview

This cop looks for unless expressions with else clauses.

Constant Summary collapse

MSG = 
'Never use unless with else. Rewrite these with the ' +
'positive case first.'

Instance Attribute Summary

Attributes inherited from Cop

#autocorrect, #corrections, #debug, #disabled_lines, #offences

Instance Method Summary collapse

Methods inherited from Cop

#add_offence, all, #autocorrect_action, cop_name, cop_type, #do_autocorrect, #ignore_node, inherited, #initialize, lint?, #name, rails?, style?

Constructor Details

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

Instance Method Details

#on_if(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/unless_else.rb', line 11

def on_if(node)
  loc = node.loc

  # discard ternary ops and modifier if/unless nodes
  return unless loc.respond_to?(:keyword) && loc.respond_to?(:else)

  if loc.keyword.is?('unless') && loc.else
    add_offence(:convention, loc.expression, MSG)
  end
end