module Journey ### # The Routing table. Contains all routes for a system. Routes can be # added to the table by calling Routes#add_route class Routes include Enumerable attr_reader :routes, :named_routes def initialize @routes = [] @named_routes = {} @ast = nil @partitioned_routes = nil @simulator = nil end def length @routes.length end alias :size :length def last @routes.last end def each(&block) routes.each(&block) end def clear routes.clear end def partitioned_routes @partitioned_routes ||= routes.partition { |r| r.path.anchored && r.ast.grep(Nodes::Symbol).all? { |n| n.default_regexp? } } end def ast return @ast if @ast return if partitioned_routes.first.empty? asts = partitioned_routes.first.map { |r| r.ast } @ast = Nodes::Or.new(asts) end def simulator return @simulator if @simulator gtg = GTG::Builder.new(ast).transition_table @simulator = GTG::Simulator.new gtg end ### # Add a route to the routing table. def add_route app, path, conditions, defaults, name = nil route = Route.new(name, app, path, conditions, defaults) route.precedence = routes.length routes << route named_routes[name] = route if name clear_cache! route end private def clear_cache! @ast = nil @partitioned_routes = nil @simulator = nil end end end