public bool Parse(out XmlErrorCollection errorCollection, out SchemeGenerator schemeGenerator)
{
if (_xDoc == null)
{
throw new ArgumentNullException("XML document is not valid.");
}
//Store a reference to a new scheme generator and error collector for ease of use later on.
//This object is not responsible for their lifetime once Parse() has finished!
_schemeGenerator = new SchemeGenerator();
_errorCollection = new XmlErrorCollection();
FoundElements foundElements = new FoundElements();
//Iterate through all elements.
IEnumerable <XElement> elements = _xDoc.Elements();
foreach (XElement element in elements)
{
//Handle scheme element.
if (element.Name.LocalName == ElementTypes.Metascheme.ToString())
{
if (!foundElements.Contains(ElementTypes.Metascheme))
{
foundElements.Add(ElementTypes.Metascheme, element);
ParseMetaschemeElement(element);
}
else
{
_errorCollection.AddRepeatedElement(element);
}
}
//Invalid element.
else
{
_errorCollection.AddInvalidElement(element);
}
}
//If we didn't get the scheme element, we didn't do anything just now!
if (!foundElements.Contains(ElementTypes.Metascheme))
{
_errorCollection.AddElementNotFound(ElementTypes.Metascheme.ToString());
}
//Set the out variables and lose our stored references to them.
schemeGenerator = _schemeGenerator;
_schemeGenerator = null;
errorCollection = _errorCollection;
_errorCollection = null;
return(errorCollection.Errors.Count == 0);
}
