Class: RuboCop::Cop::Naming::MethodParameterName

Inherits:
Base
  • Object
show all
Includes:
UncommunicativeName
Defined in:
lib/rubocop/cop/naming/method_parameter_name.rb

Overview

This cop checks method parameter names for how descriptive they are. It is highly configurable.

The ‘MinNameLength` config option takes an integer. It represents the minimum amount of characters the name must be. Its default is 3. The `AllowNamesEndingInNumbers` config option takes a boolean. When set to false, this cop will register offenses for names ending with numbers. Its default is false. The `AllowedNames` config option takes an array of permitted names that will never register an offense. The `ForbiddenNames` config option takes an array of restricted names that will always register an offense.

Examples:

# bad
def bar(varOne, varTwo)
  varOne + varTwo
end

# With `AllowNamesEndingInNumbers` set to false
def foo(num1, num2)
  num1 * num2
end

# With `MinArgNameLength` set to number greater than 1
def baz(a, b, c)
  do_stuff(a, b, c)
end

# good
def bar(thud, fred)
  thud + fred
end

def foo(speed, distance)
  speed * distance
end

def baz(age_a, height_b, gender_c)
  do_stuff(age_a, height_b, gender_c)
end

Constant Summary

Constants included from UncommunicativeName

UncommunicativeName::CASE_MSG, UncommunicativeName::FORBIDDEN_MSG, UncommunicativeName::LENGTH_MSG, UncommunicativeName::NUM_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

Instance Method Summary collapse

Methods included from UncommunicativeName

#check

Methods inherited from Base

#add_global_offense, #add_offense, autocorrect_incompatible_with, 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

Instance Method Details

#on_def(node) ⇒ Object Also known as: on_defs 



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# File 'lib/rubocop/cop/naming/method_parameter_name.rb', line 49

def on_def(node)
  return unless node.arguments?

  check(node, node.arguments)
end