class FFI_Yajl::Benchmark::Parse

def run
  filename = File.expand_path(File.join(File.dirname(__FILE__), "subjects", "item.json"))
  json = File.new(filename, 'r')
  json_str = json.read
  times = ARGV[1] ? ARGV[1].to_i : 10_000
  puts "Starting benchmark parsing #{File.size(filename)} bytes of JSON data #{times} times\n\n"
  Benchmark.bmbm { |x|
    x.report {
      puts "FFI_Yajl::Parser.parse (from a String)"
      times.times {
        FFI_Yajl::Parser.parse(json_str)
      }
    }
     ffi_parser = FFI_Yajl::Parser.new
     x.report {
       puts "FFI_Yajl::Parser#parse (from a String)"
       times.times {
         json.rewind
         ffi_parser.parse(json.read)
       }
     }
    if defined?(Yajl::Parser)
      x.report {
        puts "Yajl::Parser.parse (from a String)"
        times.times {
          Yajl::Parser.parse(json_str)
        }
      }
      io_parser = Yajl::Parser.new
      io_parser.on_parse_complete = lambda {|obj|} if times > 1
      x.report {
        puts "Yajl::Parser#parse (from an IO)"
        times.times {
          json.rewind
          io_parser.parse(json)
        }
      }
      string_parser = Yajl::Parser.new
      string_parser.on_parse_complete = lambda {|obj|} if times > 1
      x.report {
        puts "Yajl::Parser#parse (from a String)"
        times.times {
          json.rewind
          string_parser.parse(json_str)
        }
      }
    end
    if defined?(JSON)
      x.report {
        puts "JSON.parse"
        times.times {
          json.rewind
          JSON.parse(json.read, :max_nesting => false)
        }
      }
    end
    if defined?(ActiveSupport::JSON)
      x.report {
        puts "ActiveSupport::JSON.decode"
        times.times {
          json.rewind
          ActiveSupport::JSON.decode(json.read)
        }
      }
    end
    x.report {
      puts "YAML.load (from an IO)"
      times.times {
        json.rewind
        YAML.load(json)
      }
    }
    x.report {
      puts "YAML.load (from a String)"
      times.times {
        YAML.load(json_str)
      }
    }
    if defined?(Psych)
      x.report {
        puts "Psych.load (from an IO)"
        times.times {
          json.rewind
          Psych.load(json)
        }
      }
      x.report {
        puts "Psych.load (from a String)"
        times.times {
          Psych.load(json_str)
        }
      }
    end
  }
  json.close
end