private ConstructorMap GetMatchConstructorMap(Type type, Node node)
{
// Get Constructors ordered by number of parameters
IEnumerable <ConstructorInfo> ctors = type
.GetConstructors()
.OrderByDescending(c => c.GetParameters().Length);
IEnumerable <Node> subNodes = node.GetChildren();
var values = new Dictionary <string, Node>();
foreach (var n in subNodes)
{
values[n.Name.ToLower()] = n;
}
ConstructorMap bestMatch = null;
foreach (ConstructorInfo ctor in ctors)
{
ConstructorMap map = CreateConstructorMap(ctor, values);
if (map.IsFine())
{
return(map);
}
else if (bestMatch == null || map.GetMatchCount() > bestMatch.GetMatchCount())
{
bestMatch = map;
}
}
throw new ConstructorNotFoundException(node, type);
}
private ConstructorMap CreateConstructorMap(ConstructorInfo info,
IReadOnlyDictionary <string, Node> values)
{
ConstructorMap map = new ConstructorMap(info);
foreach (ParameterInfo parameter in info.GetParameters())
{
string s = parameter.Name.ToLower();
if (values.TryGetValue(s, out Node value))
{
map.AddMatchParameter(parameter, value);
}
}
return(map);
}
private object CallConstructor(ConstructorMap map)
{
object[] parameters = new object[map.GetMatchCount()];
int index = 0;
foreach (ParameterInfo paramInfo in map.Constructor.GetParameters())
{
Node paramNode = map.Parameters[paramInfo.Name];
parameters[index] = _delegator.Deserialize(
paramInfo.ParameterType,
paramNode
);
paramNode.Remove();
++index;
}
return(map.Constructor.Invoke(parameters));
}