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

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Includes:
TrailingComma
Defined in:
lib/rubocop/cop/style/trailing_comma_in_arguments.rb

Overview

This cop checks for trailing comma in argument lists. The supported styles are:

  • ‘consistent_comma`: Requires a comma after the last argument,

for all parenthesized method calls with arguments.

  • ‘comma`: Requires a comma after the last argument, but only for

parenthesized method calls where each argument is on its own line.

  • ‘no_comma`: Requires that there is no comma after the last

argument.

Examples:

EnforcedStyleForMultiline: consistent_comma

# bad
method(1, 2,)

# good
method(1, 2)

# good
method(
  1, 2,
  3,
)

# good
method(
  1, 2, 3,
)

# good
method(
  1,
  2,
)

EnforcedStyleForMultiline: comma

# bad
method(1, 2,)

# good
method(1, 2)

# bad
method(
  1, 2,
  3,
)

# good
method(
  1, 2,
  3
)

# bad
method(
  1, 2, 3,
)

# good
method(
  1, 2, 3
)

# good
method(
  1,
  2,
)

EnforcedStyleForMultiline: no_comma (default)

# bad
method(1, 2,)

# good
method(1, 2)

# good
method(
  1,
  2
)

Constant Summary

Constants included from TrailingComma

TrailingComma::MSG

Constants inherited from Base

Base::RESTRICT_ON_SEND

Constants included from Util

Util::LITERAL_REGEX

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Class Method Summary collapse

Instance Method Summary collapse

Methods included from AutoCorrector

support_autocorrect?

Methods included from ConfigurableEnforcedStyle

#alternative_style, #alternative_styles, #ambiguous_style_detected, #correct_style_detected, #detected_style, #detected_style=, #no_acceptable_style!, #no_acceptable_style?, #opposite_style_detected, #style, #style_configured?, #style_detected, #style_parameter_name, #supported_styles, #unexpected_style_detected

Methods inherited from Base

#add_global_offense, #add_offense, badge, callbacks_needed, #callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, department, documentation_url, exclude_from_registry, #excluded_file?, #external_dependency_checksum, inherited, #initialize, joining_forces, lint?, match?, #message, #offenses, #on_investigation_end, #on_new_investigation, #on_other_file, #ready, #relevant_file?, support_autocorrect?, support_multiple_source?, #target_rails_version, #target_ruby_version

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #correctable?, #disable_uncorrectable?, #safe_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

add_parentheses, args_begin, args_end, begins_its_line?, comment_line?, comment_lines?, double_quotes_required?, escape_string, first_part_of_call_chain, indent, interpret_string_escapes, line_range, needs_escaping?, on_node, parentheses?, same_line?, to_string_literal, to_supported_styles, trim_string_interporation_escape_character

Methods included from PathUtil

absolute?, hidden_dir?, hidden_file?, hidden_file_in_not_hidden_dir?, match_path?, maybe_hidden_file?, relative_path, smart_path

Constructor Details

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

Class Method Details

.autocorrect_incompatible_with ⇒ Object 



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# File 'lib/rubocop/cop/style/trailing_comma_in_arguments.rb', line 100

def self.autocorrect_incompatible_with
  [Layout::HeredocArgumentClosingParenthesis]
end

Instance Method Details

#on_send(node) ⇒ Object Also known as: on_csend 



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# File 'lib/rubocop/cop/style/trailing_comma_in_arguments.rb', line 91

def on_send(node)
  return unless node.arguments? && node.parenthesized?

  check(node, node.arguments, 'parameter of %<article>s method call',
        node.last_argument.source_range.end_pos,
        node.source_range.end_pos)
end