private static bool FindInType(
IReadOnlyObjectDataConverterCollection collection, Type type, out ObjectDataConverter converter)
{
return(type.IsGenericType
? collection.TryGetConverter(type.GetGenericTypeDefinition(), out converter)
: collection.TryGetConverter(type, out converter));
}
public static bool TryGetConverter(
this IReadOnlyObjectDataConverterCollection self, Type convertType, out ObjectDataConverter converter)
{
if (!self.TryGetConverters(convertType, out var converters) || converters.Count == 0)
{
converter = null;
return(false);
}
converter = converters.First();
return(true);
}
private static bool FindInBaseTypes(
IReadOnlyObjectDataConverterCollection collection, Type type, out ObjectDataConverter converter)
{
var p = type.BaseType;
while (p != null)
{
if (FindInType(collection, p, out converter))
{
return(true);
}
p = p.BaseType;
}
converter = null;
return(false);
}
private static bool FindInInterfaces(
IReadOnlyObjectDataConverterCollection collection, Type type, out ObjectDataConverter converter)
{
var interfaces = type.GetMostDerivedInterfaces();
foreach (var @interface in interfaces)
{
if (FindInType(collection, @interface, out converter))
{
return(true);
}
}
foreach (var @interface in interfaces)
{
if (FindInInterfaces(collection, @interface, out converter))
{
return(true);
}
}
converter = null;
return(false);
}
public virtual ObjectDataConverter Select(IReadOnlyObjectDataConverterCollection collection, Type convertType)
{
Ensure.Argument.NotNull(collection, nameof(collection));
if (collection.Count == 0)
{
return(null);
}
ObjectDataConverter converter;
if (FindInType(collection, convertType, out converter))
{
return(converter);
}
if (FindInInterfaces(collection, convertType, out converter))
{
return(converter);
}
if (FindInBaseTypes(collection, convertType, out converter))
{
return(converter);
}
return(null);
}
public static ObjectDataConverter GetConverter(
this IReadOnlyObjectDataConverterCollection self, Type convertType)
{
return(self[convertType].FirstOrDefault());
}