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Versions: 11
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Contents
module RubySpeech
module GRXML
##
#
# A rule definition associates a legal rule expansion with a rulename. The rule definition is also responsible for defining the scope of the rule definition: whether it is local to the grammar in which it is defined or whether it may be referenced within other grammars.
#
# http://www.w3.org/TR/speech-grammar/#S3
# http://www.w3.org/TR/speech-grammar/#S3.1
#
# The rule element has two attributes: id and scope. The id attribute is always required; the scope is optional.
#
# The id must be unique with-in the grammar document
#
# The scope is either "private" or "public". If it is not explicitly declared in a rule definition then the scope defaults to "private".
#
#
class Rule < Element
include XML::Language
register :rule
VALID_CHILD_TYPES = [Nokogiri::XML::Element, Nokogiri::XML::Text, String, OneOf, Item, Ruleref, Tag, Token].freeze
##
#
# The id attribute is the unique name to identify the rule
#
#
# @return [String]
#
def id
read_attr :id, :to_sym
end
##
# @param [String] ia
#
def id=(ia)
self[:id] = ia
end
##
#
# The scope attribute is optional...
#
# @return [String]
#
def scope
read_attr :scope, :to_sym
end
##
#
# The scope attribute should only be "private" or "public"
#
# @param [String] ia
#
def scope=(sc)
raise ArgumentError, "A Rule's scope can only be 'public' or 'private'" unless %w{public private}.include?(sc.to_s)
self[:scope] = sc
end
def <<(arg)
raise InvalidChildError, "A Rule can only accept OneOf, Item, Ruleref, Tag, or Token as children" unless VALID_CHILD_TYPES.include? arg.class
super
end
def eql?(o)
super o, :id, :scope, :language
end
end # Rule
end # GRXML
end # RubySpeech
Version data entries
11 entries across 11 versions & 1 rubygems