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module RegexpPropertyValues
class Value
module SharedMethods
attr_reader :name
def initialize(name)
@name = name
end
def supported_by_current_ruby?
!!regexp rescue false
end
def ==(other)
identifier == other.identifier
end
alias eql? ==
def hash
@hash ||= identifier.hash
end
def identifier
@identifier ||= name.to_s.downcase.gsub(/[^0-9a-z=.]/, '')
end
alias to_s identifier
def full_name
(original = find_original) ? original.name : raise_unknown_error
end
def character_set
require 'character_set'
CharacterSet.from_ranges(*matched_ranges)
end
private
def regexp
@regexp ||= /\p{#{identifier}}/u
rescue RegexpError, SyntaxError
raise_unsupported_or_unknown_error
end
def find_original
RegexpPropertyValues.all.find { |orig| orig.eql?(self) } ||
RegexpPropertyValues.alias_hash[self]
end
def raise_unsupported_or_unknown_error
find_original ? raise_unsupported_error : raise_unknown_error
end
def raise_unsupported_error
raise Error, "Property name `#{name}` is known, but not in this Ruby"
end
def raise_unknown_error
raise Error, "Property name `#{name}` is not known in any Ruby"
end
end
end
end
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