/// <summary>
/// It parses the information in the parser context and builds the field.
/// </summary>
/// <param name="parserContext">
/// It's the parser context.
/// </param>
/// <returns>
/// The new field built with the information found in the parser context.
/// </returns>
public override Field Parse(ref ParserContext parserContext)
{
// If MinValue, at this moment the length hasn't been decoded.
if (parserContext.DecodedLength == int.MinValue)
{
if (!_lengthManager.EnoughData(ref parserContext))
{
// Insufficient data to parse length, return null.
return(null);
}
// Save length in parser context just in case field value
// can't be parsed at this time (more data needed).
parserContext.DecodedLength =
_lengthManager.ReadLength(ref parserContext);
}
if (parserContext.DataLength < _encoder.GetEncodedLength(
parserContext.DecodedLength))
{
// Insufficient data to parse field value, return null.
return(null);
}
// Create the new messaging component with parsing context data.
BinaryField field = new BinaryField(FieldNumber,
_encoder.Decode(ref parserContext,
parserContext.DecodedLength));
_lengthManager.ReadLengthTrailer(ref parserContext);
return(field);
}
/// <summary>
/// It parses the information in the parser context and builds the field.
/// </summary>
/// <param name="parserContext">
/// It's the parser context.
/// </param>
/// <returns>
/// The new field built with the information found in the parser context.
/// </returns>
public override Field Parse(ref ParserContext parserContext)
{
// If MinValue, at this moment the length hasn't been decoded.
if (parserContext.DecodedLength == int.MinValue)
{
if (!_lengthManager.EnoughData(ref parserContext))
{
// Insufficient data to parse length, return null.
return(null);
}
// Save length in parser context just in case field value
// can't be parsed at this time (more data needed).
parserContext.DecodedLength =
_lengthManager.ReadLength(ref parserContext);
}
if (parserContext.DataLength < _encoder.GetEncodedLength(
parserContext.DecodedLength))
{
// Insufficient data to parse field value, return null.
return(null);
}
Message message = null;
if (parserContext.DecodedLength > 0)
{
ParserContext innerMsgParserContext = new ParserContext(parserContext.DecodedLength);
innerMsgParserContext.Write(
_encoder.Decode(ref parserContext, parserContext.DecodedLength));
message = _messageFormatter.Parse(ref innerMsgParserContext);
if (message == null)
{
throw new MessagingException(SR.CantParseInnerMessage);
}
}
// Create the new messaging component with parsing context data.
InnerMessageField field = new InnerMessageField(FieldNumber, message);
_lengthManager.ReadLengthTrailer(ref parserContext);
return(field);
}
/// <summary>
/// Analiza la información contenida en un contexto de analisis y
/// construcción de mensajes, y construye en base a ella un nuevo
/// cabezal para el que el formateador se ha construido.
/// </summary>
/// <param name="parserContext">
/// Es el contexto de analisis y construcción y construcción de mensajes.
/// </param>
/// <returns>
/// El nuevo cabezal contruido a partir de la información contenida en
/// el contexto de análisis y construcción de mensajes.
/// </returns>
public virtual MessageHeader Parse(ref ParserContext parserContext)
{
// If zero, at this moment the length hasn't been decoded.
if (parserContext.DecodedLength == int.MinValue)
{
if (!_lengthManager.EnoughData(ref parserContext))
{
// Insufficient data to parse length, return null.
return(null);
}
// Save length in parser context just in case field value
// can't be parsed at this time (more data needed).
parserContext.DecodedLength =
_lengthManager.ReadLength(ref parserContext);
}
if (parserContext.DataLength < _encoder.GetEncodedLength(
parserContext.DecodedLength))
{
// Insufficient data to parse field value, return null.
return(null);
}
// Create the new messaging component with parsing context data.
StringMessageHeader header;
if (_padding == null)
{
header = new StringMessageHeader(_encoder.Decode(
ref parserContext, parserContext.DecodedLength));
}
else
{
header = new StringMessageHeader(_padding.RemovePad(
_encoder.Decode(ref parserContext,
parserContext.DecodedLength)));
}
_lengthManager.ReadLengthTrailer(ref parserContext);
return(header);
}
