Class: RuboCop::Cop::Naming::FileName

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

Overview

This cop makes sure that Ruby source files have snake_case names. Ruby scripts (i.e. source files with a shebang in the first line) are ignored.

The cop also ignores `.gemspec` files, because Bundler recommends using dashes to separate namespaces in nested gems (i.e. `bundler-console` becomes `Bundler::Console`). As such, the gemspec is supposed to be named `bundler-console.gemspec`.

When `ExpectMatchingDefinition` (default: `false`) is `true`, the cop requires each file to have a class, module or `Struct` defined in it that matches the filename. This can be further configured using `CheckDefinitionPathHierarchy` (default: `true`) to determine whether the path should match the namespace of the above definition.

When `IgnoreExecutableScripts` (default: `true`) is `true`, files that start with a shebang line are not considered by the cop.

When `Regex` is set, the cop will flag any filename that does not match the regular expression.

Examples:

# bad
lib/layoutManager.rb

anything/usingCamelCase

# good
lib/layout_manager.rb

anything/using_snake_case.rake

Constant Summary collapse

MSG_SNAKE_CASE =
'The name of this source file (`%<basename>s`) should use snake_case.'
MSG_NO_DEFINITION =
'`%<basename>s` should define a class or module called `%<namespace>s`.'
MSG_REGEX =
'`%<basename>s` should match `%<regex>s`.'
SNAKE_CASE =
/^[\d[[:lower:]]_.?!]+$/.freeze

Constants inherited from Base

Base::RESTRICT_ON_SEND

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary collapse

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_other_file, #parse, #ready, #relevant_file?, support_autocorrect?, support_multiple_source?, #target_rails_version, #target_ruby_version

Methods included from ExcludeLimit

#exclude_limit

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

silence_warnings

Constructor Details

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

Instance Method Details

#on_new_investigationObject


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# File 'lib/rubocop/cop/naming/file_name.rb', line 56

def on_new_investigation
  file_path = processed_source.file_path
  return if config.file_to_exclude?(file_path) || config.allowed_camel_case_file?(file_path)

  for_bad_filename(file_path) { |range, msg| add_offense(range, message: msg) }
end

#struct_definition(node) ⇒ Object


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

def_node_matcher :struct_definition, <<~PATTERN
  {
    (casgn $_ $_        (send (const {nil? cbase} :Struct) :new ...))
    (casgn $_ $_ (block (send (const {nil? cbase} :Struct) :new ...) ...))
  }
PATTERN