Contents

require 'tamashii/packet'

module Tamashii
  class Resolver

    class << self
      def method_missing(name, *args, &block)
        self.instance.send(name, *args, &block)
      end
      
      def instance
        @instance ||= self.new
      end
    end

    def handlers
      @handlers ||= {}
    end

    def hooks
      @hooks ||= []
    end

    def config(&block)
      instance_eval(&block)
    end

    def default_handler(handler_class = nil, env = {})
      return @default_handler || [nil, {}] if handler_class.nil?
      @default_handler = [handler_class, env]
    end

    def handle(type, handler_class, options = {})
      raise NotImplementedError.new("Handler should implement resolve method") unless handler_class.method_defined?(:resolve)
      handlers[type] = [handler_class, options]
    end

    def hook(hook_class, env = {})
      raise NotImplementedError.new("Hook should implement call method") unless hook_class.method_defined?(:call)
      hooks << [hook_class, env]
    end

    def resolve(pkt, env = {})
      hooks.each do  |hook_data|
        hook_class, hook_env = hook_data
        if hook_class.new(hook_env.merge(env)).call(pkt)
          # terminates the procedure
          return
        end
      end
      handler, options = handlers[pkt.type] || @default_handler
      handler.new(pkt.type, options.merge(env)).resolve(pkt.body) if handler
    end

    def handle?(type)
      handlers.has_key? type
    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
tamashii-common-0.1.6	lib/tamashii/resolver.rb
tamashii-common-0.1.5	lib/tamashii/resolver.rb
tamashii-common-0.1.4	lib/tamashii/resolver.rb
tamashii-common-0.1.3	lib/tamashii/resolver.rb
tamashii-common-0.1.2	lib/tamashii/resolver.rb