Class: RuboCop::Cop::Style::Not

Inherits:
Cop
  • Object
show all
Includes:
RangeHelp
Defined in:
lib/rubocop/cop/style/not.rb

Overview

This cop checks for uses of the keyword ‘not` instead of `!`.

Examples:


# bad - parentheses are required because of op precedence
x = (not something)

# good
x = !something

Constant Summary collapse

MSG = 
'Use `!` instead of `not`.'
OPPOSITE_METHODS = 
{
  :== => :!=,
  :!= => :==,
  :<= => :>,
  :> => :<=,
  :< => :>=,
  :>= => :<
}.freeze

Constants included from Util

Util::LITERAL_REGEX

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Instance Method Summary collapse

Methods inherited from Cop

#add_offense, all, autocorrect_incompatible_with, badge, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, cop_name, #cop_name, #correct, department, #duplicate_location?, #excluded_file?, #find_location, #highlights, inherited, #initialize, #join_force?, lint?, match?, #message, #messages, non_rails, #parse, qualified_cop_name, #relevant_file?, #target_rails_version, #target_ruby_version

Methods included from AST::Sexp

#s

Methods included from NodePattern::Macros

#def_node_matcher, #def_node_search, #node_search, #node_search_all, #node_search_body, #node_search_first

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?, comment_line?, double_quotes_required?, escape_string, first_part_of_call_chain, interpret_string_escapes, line_range, needs_escaping?, on_node, parentheses?, same_line?, to_string_literal, to_supported_styles, tokens, trim_string_interporation_escape_character

Methods included from PathUtil

absolute?, chdir, hidden_dir?, hidden_file_in_not_hidden_dir?, match_path?, pwd, relative_path, reset_pwd, smart_path

Constructor Details

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

Instance Method Details

#autocorrect(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/not.rb', line 36

def autocorrect(node)
  range = range_with_surrounding_space(range: node.loc.selector,
                                       side: :right)

  if opposite_method?(node.receiver)
    correct_opposite_method(range, node.receiver)
  elsif requires_parens?(node.receiver)
    correct_with_parens(range, node)
  else
    correct_without_parens(range)
  end
end

#on_send(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/not.rb', line 30

def on_send(node)
  return unless node.prefix_not?

  add_offense(node, location: :selector)
end