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Contents
# frozen_string_literal: true
require 'mustermann'
require 'mustermann/regexp_based'
require 'strscan'
module Mustermann
# Regexp pattern implementation.
#
# @example
# Mustermann.new('/.*', type: :regexp) === '/bar' # => true
#
# @see Mustermann::Pattern
# @see file:README.md#simple Syntax description in the README
class Regular < RegexpBased
include Concat::Native
register :regexp, :regular
supported_options :check_anchors
# @param (see Mustermann::Pattern#initialize)
# @return (see Mustermann::Pattern#initialize)
# @see (see Mustermann::Pattern#initialize)
def initialize(string, check_anchors: true, **options)
string = $1 if string.to_s =~ /\A\(\?\-mix\:(.*)\)\Z/ && string.inspect == "/#$1/"
string = string.source.gsub!(/(?<!\\)(?:\s|#.*$)/, '') if extended_regexp?(string)
@check_anchors = check_anchors
super(string, **options)
end
def compile(**options)
if @check_anchors
scanner = ::StringScanner.new(@string)
check_anchors(scanner) until scanner.eos?
end
/#{@string}/
end
def check_anchors(scanner)
return scanner.scan_until(/\]/) if scanner.scan(/\[/)
return scanner.scan(/\\?./) unless illegal = scanner.scan(/\\[AzZ]|[\^\$]/)
raise CompileError, "regular expression should not contain %s: %p" % [illegal.to_s, @string]
end
def extended_regexp?(string)
not (Regexp.new(string).options & Regexp::EXTENDED).zero?
end
private :compile, :check_anchors, :extended_regexp?
end
end
Version data entries
25 entries across 22 versions & 4 rubygems