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Versions: 15
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Contents
module Regexp::Expression
module Shared
module ClassMethods
# Convenience method to init a valid Expression without a Regexp::Token
def construct(params = {})
attrs = construct_defaults.merge(params)
options = attrs.delete(:options)
token_args = Regexp::TOKEN_KEYS.map { |k| attrs.delete(k) }
token = Regexp::Token.new(*token_args)
raise ArgumentError, "unsupported attribute(s): #{attrs}" if attrs.any?
new(token, options)
end
def construct_defaults
if self == Root
{ type: :expression, token: :root, ts: 0 }
elsif self < Sequence
{ type: :expression, token: :sequence }
else
{ type: token_class::Type }
end.merge(level: 0, set_level: 0, conditional_level: 0, text: '')
end
def token_class
if self == Root || self < Sequence
nil # no token class because these objects are Parser-generated
# TODO: synch exp & token class names for alt., dot, escapes in v3.0.0
elsif self == Alternation || self == CharacterType::Any
Regexp::Syntax::Token::Meta
elsif self <= EscapeSequence::Base
Regexp::Syntax::Token::Escape
else
Regexp::Syntax::Token.const_get(name.split('::')[2])
end
end
end
def token_class
self.class.token_class
end
end
end
Version data entries
15 entries across 15 versions & 6 rubygems