Class: RuboCop::Cop::Style::DefWithParentheses

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

Overview

This cop checks for parentheses in the definition of a method, that does not take any arguments. Both instance and class/singleton methods are checked.

Constant Summary collapse

MSG =
"Omit the parentheses in defs when the method doesn't accept " \
'any arguments.'

Constants included from Util

Util::ASGN_NODES, Util::BASIC_LITERALS, Util::EQUALS_ASGN_NODES, Util::LITERALS, Util::OPERATOR_METHODS, Util::PROC_NEW_NODE, Util::SHORTHAND_ASGN_NODES

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Instance Method Summary collapse

Methods included from OnMethodDef

#on_def, #on_defs

Methods inherited from Cop

#add_offense, all, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, cop_name, #cop_name, cop_type, #correct, #debug?, #details, #display_cop_names?, #display_style_guide?, #excluded_file?, #extra_details?, inherited, #initialize, #join_force?, lint?, match?, #message, non_rails, qualified_cop_name, rails?, #reference_url, #relevant_file?, #style_guide_url

Methods included from NodePattern::Macros

#def_node_matcher, #def_node_search

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #support_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

begins_its_line?, block_length, command?, comment_line?, const_name, directions, first_part_of_call_chain, lambda?, lambda_or_proc?, line_range, move_pos, numeric_range_size, on_node, operator?, parentheses?, proc?, range_with_surrounding_comma, range_with_surrounding_space, source_range, strip_quotes, within_node?

Methods included from PathUtil

hidden?, issue_deprecation_warning, match_path?, relative_path

Constructor Details

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

Instance Method Details

#autocorrect(node) ⇒ Object


24
25
26
27
28
29
# File 'lib/rubocop/cop/style/def_with_parentheses.rb', line 24

def autocorrect(node)
  lambda do |corrector|
    corrector.remove(node.loc.begin)
    corrector.remove(node.loc.end)
  end
end

#on_method_def(node, _method_name, args, _body) ⇒ Object


15
16
17
18
19
20
21
22
# File 'lib/rubocop/cop/style/def_with_parentheses.rb', line 15

def on_method_def(node, _method_name, args, _body)
  start_line = node.loc.keyword.line
  end_line = node.loc.end.line

  return if start_line == end_line

  add_offense(args, :begin) if args.children == [] && args.loc.begin
end