Class: RuboCop::Cop::Style::StabbyLambdaParentheses

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

Overview

Check for parentheses around stabby lambda arguments. There are two different styles. Defaults to ‘require_parentheses`.

Examples:

# require_parentheses - bad
->a,b,c { a + b + c }

# require_parentheses - good
->(a,b,c) { a + b + c}

# require_no_parentheses - bad
->(a,b,c) { a + b + c }

# require_parentheses - good
->a,b,c { a + b + c}

Constant Summary collapse

MSG_REQUIRE = 
'Wrap stabby lambda arguments with parentheses.'.freeze
MSG_NO_REQUIRE = 
'Do not wrap stabby lambda arguments ' \
'with parentheses.'.freeze
ARROW = 
'->'.freeze

Constants included from Util

Util::ASGN_NODES, Util::BYTE_ORDER_MARK, Util::EQUALS_ASGN_NODES, Util::LITERAL_REGEX, Util::OPERATOR_METHODS, Util::SHORTHAND_ASGN_NODES, Util::STRING_ESCAPES, Util::STRING_ESCAPE_REGEX

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Instance Method Summary collapse

Methods included from ConfigurableEnforcedStyle

#alternative_style, #ambiguous_style_detected, #correct_style_detected, #detected_style, #detected_style=, #no_acceptable_style!, #no_acceptable_style?, #opposite_style_detected, #parameter_name, #style, #style_detected, #supported_styles, #unexpected_style_detected

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, #parse, qualified_cop_name, #reference_url, #relevant_file?, #style_guide_url, #target_ruby_version

Methods included from Sexp

#s

Methods included from NodePattern::Macros

#def_node_matcher, #def_node_search, #node_search_body

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, comment_line?, directions, double_quotes_acceptable?, double_quotes_required?, effective_column, ends_its_line?, first_part_of_call_chain, interpret_string_escapes, line_range, move_pos, numeric_range_size, on_node, operator?, parentheses?, range_with_surrounding_comma, range_with_surrounding_space, source_range, strip_quotes, to_string_literal, to_symbol_literal, within_node?

Methods included from PathUtil

absolute?, 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 



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# File 'lib/rubocop/cop/style/stabby_lambda_parentheses.rb', line 45

def autocorrect(node)
  if style == :require_parentheses
    missing_parentheses_corrector(node)
  elsif style == :require_no_parentheses
    unwanted_parentheses_corrector(node)
  end
end

#on_send(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/stabby_lambda_parentheses.rb', line 29

def on_send(node)
  return unless arrow_lambda_with_args?(node)

  if style == :require_parentheses
    if parentheses?(node)
      correct_style_detected
    else
      missing_parentheses(node)
    end
  elsif parentheses?(node)
    unwanted_parentheses(node)
  else
    correct_style_detected
  end
end