Class: Cql::Protocol::FrameDecoder

Inherits:
Object
  • Object
show all
Defined in:
lib/cql/protocol/frame_decoder.rb

Defined Under Namespace

Classes: CompleteFrame, NullFrame, PartialFrame

Instance Method Summary collapse

Constructor Details

#initialize(compressor = nil) ⇒ FrameDecoder

Returns a new instance of FrameDecoder.



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# File 'lib/cql/protocol/frame_decoder.rb', line 6

def initialize(compressor=nil)
  @compressor = compressor
end

Instance Method Details

#decode_frame(buffer, partial_frame = nil) ⇒ Object 



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# File 'lib/cql/protocol/frame_decoder.rb', line 10

def decode_frame(buffer, partial_frame=nil)
  partial_frame ||= NULL_FRAME
  if partial_frame == NULL_FRAME
    buffer_length = buffer.length
    return NULL_FRAME if buffer_length < 8
    fields = buffer.read_int
    size = buffer.read_int
    if buffer_length - 8 >= size
      actual_decode(buffer, fields, size)
    else
      PartialFrame.new(fields, size)
    end
  elsif buffer.length >= partial_frame.size
    actual_decode(buffer, partial_frame.fields, partial_frame.size)
  else
    partial_frame
  end
end