private Assignment ProcessTypeMap(TypeMap rootMap, string srcFieldName, string destFieldName)
{
var coder = new Coder();
foreach (PropertyMap propertyMap in rootMap.PropertyMaps)
{
RememberTypeLocations(propertyMap);
var context = new PropertyNameContext(propertyMap, srcFieldName, destFieldName);
if (propertyMap.Ignored)
{
continue;
}
//assign without explicit cast
if (propertyMap.DestType.IsAssignableFrom(propertyMap.SrcType) ||
propertyMap.DestType.IsImplicitCastableFrom(propertyMap.SrcType))
{
//TODO: need to determine explicit casts and produce cast operators
coder.SimpleAssign(context);
continue;
}
else
{
bool referenceType = propertyMap.DestType.IsClass;
//TODO: perfomance degrades on each null check! Try to avoid it if possible!
if (referenceType)
{
coder.NullCheck(context);
coder.AttachRawCode(" else {{");
coder.AppendNoParameterlessCtorException(context, propertyMap.DestType);
}
ProcessPropertyTypePair(coder, context, propertyMap);
if (referenceType)
{
coder.AttachRawCode("}}");
}
}
}
var assignment = coder.GetAssignment();
TemplateCache.AddIfNotExist(rootMap.TypePair, assignment.RelativeTemplate);
return(assignment);
}