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# Adds a {#match match class method} to the extending class. The extending class must define `MATCH_REGEXP`.
#
# @example Define `match` class method
# class MetasploitDataModels::Format
# extend MetasploitDataModels::Match::Child
#
# #
# # CONSTANTS
# #
#
# # Regular expression {MetasploitDataModels::Match#match} must match against.
# MATCH_REGEXP = /\A...\z/
# end
#
# # a `MetasploitDataModels::Format` because `'123'` matches `MetasploitDataModels::Format::MATCH_REGEXP`
# instance = MetapsloitDataModels::Format.match('123')
# # `nil` because string `'12'` doesn't match `MetasploitDataModels::Format::MATCH_REGEXP`
# no_instance = MetasploitDataModels::Format.match('12')
#
module MetasploitDataModels::Match::Child
# Creates a new instance of the extending class if `MATCH_REGEXP`, defined on the extending class, matches
# `formatted_value`.
#
# @param formatted_value [#to_s]
def match(formatted_value)
instance = nil
if match_regexp.match(formatted_value)
instance = new(value: formatted_value)
end
instance
end
# Regular expression to match against for {#match}.
#
# @return [Regexp] Defaults to {#regexp} pinned with `\A` and `\z`.
def match_regexp
@match_regexp ||= /\A#{regexp}\z/
end
# Regular expression to match child as part of {MetasploitDataModels::Match::Parent}.
#
# @return [Regexp] Default to `REGEXP` from the extending `Class`.
def regexp
self::REGEXP
end
end
Version data entries
74 entries across 74 versions & 2 rubygems