Class: RuboCop::Cop::Lint::UnusedMethodArgument

Inherits:

Cop

• Object
• Cop
• RuboCop::Cop::Lint::UnusedMethodArgument

Includes:

UnusedArgument

Defined in:

lib/rubocop/cop/lint/unused_method_argument.rb

Overview

This cop checks for unused method arguments.

Examples:

# bad
def some_method(used, unused, _unused_but_allowed)
  puts used
end

# good
def some_method(used, _unused, _unused_but_allowed)
  puts used
end

AllowUnusedKeywordArguments: false (default)

# bad
def do_something(used, unused: 42)
  used
end

AllowUnusedKeywordArguments: true

# good
def do_something(used, unused: 42)
  used
end

IgnoreEmptyMethods: true (default)

# good
def do_something(unused)
end

IgnoreEmptyMethods: false

# bad
def do_something(unused)
end

Constant Summary

Constants included from Util

Util::LITERAL_REGEX

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Instance Method Summary

• #autocorrect(node) ⇒ Object

Methods included from UnusedArgument

#after_leaving_scope, #join_force?

Methods included from NodePattern::Macros

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

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, #disable_uncorrectable, #duplicate_location?, #excluded_file?, #external_dependency_checksum, #find_location, #highlights, inherited, #initialize, #join_force?, lint?, match?, #messages, #parse, qualified_cop_name, #reason_to_not_correct, #relevant_file?, #target_rails_version, #target_ruby_version

Methods included from AST::Sexp

#s

Methods included from AutocorrectLogic

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

# File 'lib/rubocop/cop/lint/unused_method_argument.rb', line 44

def autocorrect(node)
  UnusedArgCorrector.correct(processed_source, node)
end