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Contents
require_relative 'dotted_item'
module Rley # This module is used as a namespace
module Parser # This module is used as a namespace
# Mix-in module. Builds the dotted items for a given grammar
module GrmItemsBuilder
# Build an array of dotted items from the productions in passed grammar.
def build_dotted_items(aGrammar)
items = []
aGrammar.rules.each do |prod|
rhs_size = prod.rhs.size
if rhs_size.zero?
items << DottedItem.new(prod, 0)
else
items += (0..rhs_size).map { |i| DottedItem.new(prod, i) }
end
end
return items
end
end # module
end # module
end # module
# End of file
Version data entries
23 entries across 23 versions & 1 rubygems