Class: RuboCop::Cop::Style::RedundantRegexpCharacterClass

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

Overview

Checks for unnecessary single-element Regexp character classes.

Examples:


# bad
r = /[x]/

# good
r = /x/

# bad
r = /[\s]/

# good
r = /\s/

# bad
r = %r{/[b]}

# good
r = %r{/b}

# good
r = /[ab]/

Constant Summary collapse

REQUIRES_ESCAPE_OUTSIDE_CHAR_CLASS_CHARS = 
'.*+?{}()|$'.chars.freeze
MSG_REDUNDANT_CHARACTER_CLASS = 
'Redundant single-element character class, ' \
'`%<char_class>s` can be replaced with `%<element>s`.'

Constants inherited from Base

Base::RESTRICT_ON_SEND

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary collapse

Methods included from AutoCorrector

support_autocorrect?

Methods inherited from Base

#active_support_extensions_enabled?, #add_global_offense, #add_offense, #always_autocorrect?, autocorrect_incompatible_with, badge, #begin_investigation, #callbacks_needed, callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #contextual_autocorrect?, #cop_config, cop_name, #cop_name, department, documentation_url, exclude_from_registry, #excluded_file?, #external_dependency_checksum, inherited, #initialize, #inspect, joining_forces, lint?, match?, #message, #offenses, #on_investigation_end, #on_new_investigation, #on_other_file, #parse, #parser_engine, #ready, #relevant_file?, requires_gem, #string_literals_frozen_by_default?, 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?, #autocorrect_with_disable_uncorrectable?, #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_regexp(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/redundant_regexp_character_class.rb', line 37

def on_regexp(node)
  each_redundant_character_class(node) do |loc|
    add_offense(
      loc, message: format(
        MSG_REDUNDANT_CHARACTER_CLASS,
        char_class: loc.source,
        element: without_character_class(loc)
      )
    ) do |corrector|
      corrector.replace(loc, without_character_class(loc))
    end
  end
end