Module: RuboCop::Cop::Lint::UnusedArgument

Included in:
UnusedBlockArgument, UnusedMethodArgument, Performance::HashEachMethods
Defined in:
lib/rubocop/cop/mixin/unused_argument.rb

Overview

Common functionality for cops handling unused arguments.

Instance Method Summary collapse

Instance Method Details

#after_leaving_scope(scope, _variable_table) ⇒ Object 



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# File 'lib/rubocop/cop/mixin/unused_argument.rb', line 12

def after_leaving_scope(scope, _variable_table)
  scope.variables.each_value do |variable|
    check_argument(variable)
  end
end

#autocorrect(node) ⇒ Object 



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# File 'lib/rubocop/cop/mixin/unused_argument.rb', line 26

def autocorrect(node)
  return if [:kwarg, :kwoptarg].include?(node.type)

  if node.blockarg_type?
    lambda do |corrector|
      range = range_with_surrounding_space(node.source_range, :left)
      range = range_with_surrounding_comma(range, :left)
      corrector.remove(range)
    end
  else
    ->(corrector) { corrector.insert_before(node.loc.name, '_') }
  end
end

#check_argument(variable) ⇒ Object 



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# File 'lib/rubocop/cop/mixin/unused_argument.rb', line 18

def check_argument(variable)
  return if variable.should_be_unused?
  return if variable.referenced?

  message = message(variable)
  add_offense(variable.declaration_node, :name, message)
end

#join_force?(force_class) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubocop/cop/mixin/unused_argument.rb', line 8

def join_force?(force_class)
  force_class == VariableForce
end