/// <summary>
/// Pushes an collection access on the path.
/// </summary>
/// <param name="descriptor">The descriptor of the collection.</param>
/// <param name="index">The index in the collection.</param>
/// <exception cref="System.ArgumentNullException">descriptor</exception>
public void Push(CollectionDescriptor descriptor, int index)
{
if (descriptor == null)
{
throw new ArgumentNullException(nameof(descriptor));
}
AddItem(new CollectionPathItem(descriptor, index));
}
public CollectionPathItem(CollectionDescriptor descriptor, int index)
{
if (descriptor == null)
{
throw new ArgumentNullException(nameof(descriptor));
}
Descriptor = descriptor;
Index = index;
}
/// <inheritdoc />
public virtual void VisitCollection(IEnumerable collection, CollectionDescriptor descriptor)
{
var i = 0;
// Make a copy in case VisitCollectionItem mutates something
var items = collection.Cast <object>().ToList();
foreach (var item in items)
{
CurrentPath.Push(descriptor, i);
VisitCollectionItem(collection, descriptor, i, item, TypeDescriptorFactory.Find(item?.GetType() ?? descriptor.ElementType));
CurrentPath.Pop();
i++;
}
}
/// <summary>
/// Creates a type descriptor for the specified type.
/// </summary>
/// <param name="type">The type.</param>
/// <returns>An instance of type descriptor.</returns>
protected virtual ITypeDescriptor Create(Type type)
{
ITypeDescriptor descriptor;
// The order of the descriptors here is important
if (PrimitiveDescriptor.IsPrimitive(type))
{
descriptor = new PrimitiveDescriptor(this, type, emitDefaultValues, namingConvention);
}
else if (DictionaryDescriptor.IsDictionary(type)) // resolve dictionary before collections, as they are also collections
{
// IDictionary
descriptor = new DictionaryDescriptor(this, type, emitDefaultValues, namingConvention);
}
else if (CollectionDescriptor.IsCollection(type))
{
// ICollection
descriptor = new CollectionDescriptor(this, type, emitDefaultValues, namingConvention);
}
else if (type.IsArray)
{
if (type.GetArrayRank() == 1 && !type.GetElementType().IsArray)
{
// array[] - only single dimension array is supported
descriptor = new ArrayDescriptor(this, type, emitDefaultValues, namingConvention);
}
else
{
// multi-dimension array to be treated as a 'standard' object
descriptor = new NotSupportedObjectDescriptor(this, type, emitDefaultValues, namingConvention);
}
}
else if (NullableDescriptor.IsNullable(type))
{
descriptor = new NullableDescriptor(this, type, emitDefaultValues, namingConvention);
}
else
{
// standard object (class or value type)
descriptor = new ObjectDescriptor(this, type, emitDefaultValues, namingConvention);
}
return(descriptor);
}
/// <inheritdoc />
public virtual void VisitCollection(IEnumerable collection, CollectionDescriptor descriptor)
{
if (descriptor.Category == DescriptorCategory.Set)
{
throw new ArgumentException("Shouldn't call VisitCollection() to visit a set");
}
var i = 0;
// Make a copy in case VisitCollectionItem mutates something
var items = collection.Cast <object>().ToList();
foreach (var item in items)
{
CurrentPath.Push(descriptor, i);
VisitCollectionItem(collection, descriptor, i, item, TypeDescriptorFactory.Find(item?.GetType() ?? descriptor.ElementType));
CurrentPath.Pop();
i++;
}
}
/// <inheritdoc />
public virtual void VisitCollectionItem(IEnumerable collection, CollectionDescriptor descriptor, int index, object item, ITypeDescriptor itemDescriptor)
{
Visit(item, itemDescriptor);
}