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    use ser::Reader;
    use {Payload, Error};

    pub fn deserialize_payload<T>(buffer: &[u8], version: u32) -> Result<T, Error> where T: Payload {
    	let mut reader = PayloadReader::new(buffer, version);
    	let result = try!(reader.read());
    	if !reader.is_finished() {
    		return Err(Error::Deserialize);
    	}

    	Ok(result)
    }

    pub struct PayloadReader<T> {
    	reader: Reader<T>,
    	version: u32,
    }

    impl<'a> PayloadReader<&'a [u8]> {
    	pub fn new(buffer: &'a [u8], version: u32) -> Self {
    		PayloadReader {
    			reader: Reader::new(buffer),
    			version: version,
    		}
    	}

    	pub fn read<T>(&mut self) -> Result<T, Error> where T: Payload {
    		if T::version() > self.version {
    			return Err(Error::InvalidVersion);
    		}

    		T::deserialize_payload(&mut self.reader, self.version)
    	}

    	pub fn is_finished(&mut self) -> bool {
    		self.reader.is_finished()
    	}
    }

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