/// <summary>
/// Determines whether this fgs is a converter. To be a converted, the name
/// of the function should start with and underscore (<c>_</c>) and the remaining
/// part of the name should be a specialized multivector typename.
/// </summary>
/// <returns>true if this fgs is a converter (underscore constructor).</returns>
public bool IsConverter(Specification S)
{
if (ArgumentTypeNames.Length != 1) return false;
else if ((Name.Length > 0) && (Name[0] == '_'))
return (S.IsSpecializedMultivectorName(Name.Substring(1)));
else return false;
}
/// <summary>
/// Parses an XML_CONSTANT element and stores the result.
///
/// The XML_CONSTANT element should contain the name, type and basis blades values.
/// </summary>
/// <param name="E">XML_CONSTANT element</param>
private static void ParseConstantElementAndAttributes(Specification S, XmlElement E)
{
string constantName = null;
string typeName = null;
{ // handle attributes
XmlAttributeCollection A = E.Attributes;
// handle all attributes
for (int i = 0; i < A.Count; i++)
{
// name
if (A[i].Name == XML_NAME)
constantName = A[i].Value;
// type
else if (A[i].Name == XML_TYPE)
typeName = A[i].Value;
}
// sanity check on name
if (constantName == null)
throw new G25.UserException("XML parsing error: Missing '" + XML_NAME + "' attribute in element '" + XML_CONSTANT + "'.");
if (typeName == null)
throw new G25.UserException("XML parsing error: Missing '" + XML_TYPE + "' attribute in element '" + XML_CONSTANT + "'.");
// check if name is already present
if (!S.IsSpecializedMultivectorName(typeName))
throw new G25.UserException("In constant definition: type '" + typeName + "' is not a specialized multivector.");
} // end of 'handle attributes'
// parse list of basis blades and optional comment
List<G25.rsbbp.BasisBlade> L = ParseBasisBladeList(S, E.FirstChild, constantName);
string comment = ParseComment(S, E.FirstChild);
SMV type = S.GetType(typeName) as SMV;
// add new type to list of specialized multivectors (constuctor should check if all are constant
S.AddConstant(new ConstantSMV(constantName, type, L, comment));
}