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`.'

Instance Method Summary collapse

Methods included from AutoCorrector

support_autocorrect?

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