Class: ZeroFormatter::Serializer

Inherits:
Object
  • Object
show all
Defined in:
lib/zero_formatter/serializer.rb,
lib/zero_formatter/serializer/fp.rb,
lib/zero_formatter/serializer/int.rb,
lib/zero_formatter/serializer/bool.rb,
lib/zero_formatter/serializer/time.rb,
lib/zero_formatter/serializer/uint.rb,
lib/zero_formatter/serializer/string.rb

Defined Under Namespace

Modules: BoolSerializer, CharSerializer, DoubleSerializer, FloatSerializer, Int16Serializer, Int32Serializer, Int64Serializer, Int8Serializer, StringSerializer, TimeSerializer, TimeSpanSerializer, TimeWithOffsetSerializer, UInt16Serializer, UInt32Serializer, UInt64Serializer, UInt8Serializer

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Serializer

Returns a new instance of Serializer.



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# File 'lib/zero_formatter/serializer.rb', line 10

def initialize(*args)
  add_implement Int8Serializer
  add_implement Int16Serializer
  add_implement Int32Serializer
  add_implement Int64Serializer

  add_implement UInt8Serializer
  add_implement UInt16Serializer
  add_implement UInt32Serializer
  add_implement UInt64Serializer

  add_implement FloatSerializer
  add_implement DoubleSerializer

  add_implement BoolSerializer

  add_implement CharSerializer
  add_implement StringSerializer

  add_implement TimeSpanSerializer
  add_implement TimeSerializer
  add_implement TimeWithOffsetSerializer
end

Instance Method Details

#dump(value) ⇒ Object 



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# File 'lib/zero_formatter/serializer.rb', line 34

def dump(value)
  last_index = value.class.fields.last[:index]

  data_headers = []
  data_header = "".force_encoding("ASCII-8bit")
  data = "".force_encoding("ASCII-8bit")
  header_size = 4 + 4 + (last_index+1)*4
  
  value.class.fields.each do |field|
    data_headers[field[:index]] = header_size + data.bytesize

    v = value.send(field[:name])
    if field[:options][:nullable]
      data << Utils.write_u1(v.nil? ? 0 : 1)
    end

    data << get_serializer(field[:type]).serialize(v)
  end

  data_headers.each do |h|
    data_header << Utils.write_s4(h || -1)
  end

  data_size = header_size + data.bytesize

  response = "".force_encoding("ASCII-8bit")
  response << Utils.write_s4(data_size)
  response << Utils.write_s4(last_index)
  response << data_header
  response << data
  response
end

#load(klass, bytes) ⇒ Object 



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# File 'lib/zero_formatter/serializer.rb', line 67

def load(klass, bytes)
  object_size = Utils.read_s4(bytes, 0)
  raise "Object size missmatch, expected=#{object_size}, actual=#{bytes.bytesize}" if object_size != bytes.bytesize

  last_index = Utils.read_s4(bytes, 4)
  raise "Last index is negative, #{last_index}" if last_index < 0
  raise "Last index is bigger, expected=#{klass.fields.last[:index]}, actual=#{last_index}" if klass.fields.last[:index] < last_index

  result = klass.new

  klass.fields.each do |field|
    index = field[:index]
    offset = Utils.read_s4(bytes, 8+4*index)
    if field[:options][:nullable]
      if Utils.read_u1(bytes, offset) == 0
        result.send("#{field[:name]}=", nil)
        next
      end
      offset += 1
    end

    value = get_serializer(field[:type]).deserialize(bytes, offset)
    
    result.send("#{field[:name]}=", value)
  end
  result
end