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# frozen_string_literal: true
module Regexp::Expression
module EscapeSequence
Base = Class.new(Regexp::Expression::Base)
AsciiEscape = Class.new(Base) # \e
Backspace = Class.new(Base) # \b
Bell = Class.new(Base) # \a
FormFeed = Class.new(Base) # \f
Newline = Class.new(Base) # \n
Return = Class.new(Base) # \r
Tab = Class.new(Base) # \t
VerticalTab = Class.new(Base) # \v
Literal = Class.new(Base) # e.g. \j, \@, \😀 (ineffectual escapes)
Octal = Class.new(Base) # e.g. \012
Hex = Class.new(Base) # e.g. \x0A
Codepoint = Class.new(Base) # e.g. \u000A
CodepointList = Class.new(Base) # e.g. \u{A B}
UTF8Hex = Class.new(Base) # e.g. \xE2\x82\xAC
AbstractMetaControlSequence = Class.new(Base)
Control = Class.new(AbstractMetaControlSequence) # e.g. \cB
Meta = Class.new(AbstractMetaControlSequence) # e.g. \M-Z
MetaControl = Class.new(AbstractMetaControlSequence) # e.g. \M-\cX
end
# alias for symmetry between Token::* and Expression::*
Escape = EscapeSequence
end
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