Class: RuboCop::Cop::Style::TrailingCommaInArguments

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

Overview

This cop checks for trailing comma in argument lists.

Examples:

# always bad
method(1, 2,)

# good if EnforcedStyleForMultiline is consistent_comma
method(
  1, 2,
  3,
)

# good if EnforcedStyleForMultiline is comma or consistent_comma
method(
  1,
  2,
)

# good if EnforcedStyleForMultiline is no_comma
method(
  1,
  2
)

Constant Summary

Constants included from TrailingComma

TrailingComma::MSG

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

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Instance Method Summary collapse

Methods included from TrailingComma

#autocorrect, #autocorrect_range, #avoid_comma, #brackets?, #check, #check_comma, #elements, #extra_avoid_comma_info, #heredoc?, #inside_comment?, #multiline?, #no_elements_on_same_line?, #on_same_line?, #parameter_name, #put_comma, #should_have_comma?

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?, #duplicate_location?, #excluded_file?, #extra_details?, #find_location, #highlights, inherited, #initialize, #join_force?, lint?, match?, #message, #messages, 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, #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?, block_length, comment_line?, directions, double_quotes_acceptable?, double_quotes_required?, effective_column, ends_its_line?, escape_string, first_part_of_call_chain, interpret_string_escapes, line_distance, line_range, move_pos, needs_escaping?, numeric_range_size, on_node, operator?, parentheses?, parenthesized_call?, preceed?, range_between, range_with_surrounding_comma, range_with_surrounding_space, same_line?, source_range, strip_quotes, stripped_source_upto, to_string_literal, to_symbol_literal, within_node?

Methods included from PathUtil

absolute?, match_path?, relative_path

Constructor Details

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

Instance Method Details

#on_send(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/trailing_comma_in_arguments.rb', line 33

def on_send(node)
  _receiver, _method_name, *args = *node
  return if args.empty?
  # It's impossible for a method call without parentheses to have
  # a trailing comma.
  return unless brackets?(node)

  check(node, args, 'parameter of %s method call',
        args.last.source_range.end_pos, node.source_range.end_pos)
end