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

Inherits:

Base

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

Extended by:

AutoCorrector

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

IgnoreNotImplementedMethods: true (default)

# good
def do_something(unused)
  raise NotImplementedError
end

def do_something_else(unused)
  fail "TODO"
end

IgnoreNotImplementedMethods: false

# bad
def do_something(unused)
  raise NotImplementedError
end

def do_something_else(unused)
  fail "TODO"
end

Constant Summary

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

• .joining_forces ⇒ Object

Methods included from AutoCorrector

support_autocorrect?

Methods included from UnusedArgument

#after_leaving_scope

Methods inherited from Base

#add_global_offense, #add_offense, autocorrect_incompatible_with, badge, #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, lint?, match?, #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, 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 TokensUtil

index_of_first_token, index_of_last_token, tokens

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

.joining_forces ⇒ Object

# File 'lib/rubocop/cop/lint/unused_method_argument.rb', line 70

def self.joining_forces
  VariableForce
end