/// <summary>
/// Create and return a parser capable of parsing interchange nodes / interchange chunks.
/// </summary>
/// <remarks>
/// The parser returned here is capable of parsing interchange chunks that follow the
/// interchange version this version service is supporting.
/// </remarks>
/// <param name="sourceChunk">Interchange chunk to be parsed.</param>
/// <returns>Interchange format parser.</returns>
protected override InterchangeFormatParser GetInterchangeParser(InterchangeChunk sourceChunk)
{
if (sourceChunk == null)
throw new ArgumentNullException();
InterchangeFormatParserIST10 parser = new InterchangeFormatParserIST10(new StringReader(sourceChunk.SourceChunk));
parser.ErrorSink = sourceChunk;
return parser;
}
/// <summary>
/// Process a given interchange element (chunk).
/// </summary>
/// <param name="processor"></param>
/// <param name="node">Last node that was parsed. This is used for annotations.</param>
/// <param name="chunk">Interchange chunk to be processed.</param>
/// <returns>Returns the new interchange parse node (or null in case of error).</returns>
protected virtual InterchangeUnitNode ProcessInterchangeElement(InterchangeFormatProcessor processor, InterchangeUnitNode node, InterchangeChunk chunk)
{
InterchangeFormatParser parser = this.GetInterchangeParser(chunk);
InterchangeElementNode nodeForAnnotation = (node == null) ? null : node.GetAnnotatedNode();
node = parser.ParseInterchangeElement(nodeForAnnotation);
if (node == null)
return null;
return node.FileIn(processor, chunk, chunk);
}