private Type Match(ArgumentSet arguments)
{
bool useDefault = arguments.Any(a => a.Value.IsDefault);
var matchingTypes = new List <TypeMatch>();
foreach (var type in Types)
{
object[] customAttributes = type.GetCustomAttributes(typeof(DefaultArgumentsAttribute), false);
bool isDefaultArgs = customAttributes.Length > 0;
bool isMatch = isDefaultArgs && arguments.Count == 0;
var matchingType = new TypeMatch
{
Type = type
};
foreach (var argument in arguments)
{
if (isDefaultArgs && useDefault && argument.Value.IsDefault)
{
isMatch = true;
argument.Value.IsDefault = true;
argument.Value.Value = argument.Key;
matchingType.ArgumentMatches++;
}
else
{
if (GetPropertyInfo(type, argument.Key) != null)
{
isMatch = true;
matchingType.ArgumentMatches++;
}
}
}
if (isMatch)
{
matchingTypes.Add(matchingType);
}
}
if (matchingTypes.Count == 1)
{
return(matchingTypes[0].Type);
}
var matchingTypesInOrder = matchingTypes.OrderByDescending(x => x.ArgumentMatches).ToList();
if (matchingTypes.Count > 1)
{
if (matchingTypesInOrder[0].ArgumentMatches == matchingTypesInOrder[1].ArgumentMatches)
{
throw new Exception(string.Format("The arguments [{0}] and [{1}] are non deterministic in respect to the args: {2}",
matchingTypesInOrder[0].Type.Name,
matchingTypesInOrder[1].Type.Name,
arguments));
}
}
TypeMatch matching = matchingTypesInOrder.FirstOrDefault();
if (matching != null)
{
return(matching.Type);
}
return(null);
}