class Regexp::Expression::Backreference::Base
Attributes
referenced_expression[RW]
Public Instance Methods
initialize_copy(orig)
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Calls superclass method
Regexp::Expression::Shared#initialize_copy
# File lib/regexp_parser/expression/classes/backreference.rb, line 6 def initialize_copy(orig) exp_id = [self.class, self.starts_at] # prevent infinite recursion for recursive subexp calls copied = @@copied ||= {} self.referenced_expression = if copied[exp_id] orig.referenced_expression else copied[exp_id] = true orig.referenced_expression.dup end copied.clear super end
match_length()
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# File lib/regexp_parser/expression/methods/match_length.rb, line 155 def match_length if referenced_expression.nil? raise ArgumentError, 'Missing referenced_expression - not parsed?' end referenced_expression.unquantified_clone.match_length end