/// <summary>
/// Populates an array value.
/// </summary>
/// <param name="state">The loader state.</param>
/// <param name="member">The member to populate.</param>
/// <param name="element">The element that defines the member's value.</param>
private void PopulateArray(ObjectLoaderState state, ObjectLoaderMember member, XElement element)
{
// Make sure that the array is properly defined.
var itemsRoot = element.Element("Items");
if (itemsRoot != null && itemsRoot.Elements().Where(x => x.Name != "Item").Any())
{
throw new InvalidOperationException(NucleusStrings.NonItemElementsInArrayDef);
}
// Create the array.
var items = (itemsRoot == null) ? new List <XElement>() : itemsRoot.Elements("Item").ToList();
var arrayElementType = member.MemberType.GetElementType();
var array = Array.CreateInstance(arrayElementType, items.Count);
member.SetValueFromData(array, element);
// Populate the array's items.
for (int i = 0; i < items.Count; i++)
{
var value = default(Object);
var type = GetTypeFromElement(state, arrayElementType, items[i]);
if (items[i].Elements().Any())
{
value = CreateObject(state, type, null, GetSpecifiedConstructorArguments(items[i]));
value = PopulateObjectFromElements(state, value, items[i]);
}
else
{
value = ObjectResolver.FromString(items[i].Value, type);
}
array.SetValue(value, i);
}
}
/// <summary>
/// Populates an enumerable value.
/// </summary>
/// <param name="state">The loader state.</param>
/// <param name="member">The member to populate.</param>
/// <param name="element">The element that defines the member's value.</param>
private void PopulateEnumerable(ObjectLoaderState state, ObjectLoaderMember member, XElement element)
{
var listElemType = GetEnumerableElementType(element.Name.LocalName, member.MemberType);
var listType = typeof(List <>).MakeGenericType(listElemType);
var listInstance = Activator.CreateInstance(listType);
PopulateListItems(state, listInstance, listElemType, element);
member.SetValueFromData(listInstance, element);
}
/// <summary>
/// Populates a list value.
/// </summary>
/// <param name="state">The loader state.</param>
/// <param name="member">The member to populate.</param>
/// <param name="element">The element that defines the member's value.</param>
private void PopulateList(ObjectLoaderState state, ObjectLoaderMember member, XElement element)
{
// Create the list.
var listImplType = GetListImplementationType(member.MemberType);
var listElemType = GetListElementType(element.Name.LocalName, listImplType);
var list = Activator.CreateInstance(listImplType);
// Populate the list's members.
if (!member.IsIndexer)
{
PopulateObjectFromAttributes(state, list, element);
}
PopulateObjectFromElements(state, list, element, x => x.Name != "Items");
PopulateListItems(state, list, listElemType, element);
// Set the list on the object.
member.SetValueFromData(list, element);
}
/// <summary>
/// Populates an object from the attributes defined on the specified data element.
/// </summary>
/// <param name="state">The loader state.</param>
/// <param name="objectInstance">The object instance.</param>
/// <param name="objectElement">The object element.</param>
/// <returns>The object instance.</returns>
private Object PopulateObjectFromAttributes(ObjectLoaderState state, Object objectInstance, XElement objectElement)
{
foreach (var attr in objectElement.Attributes())
{
if (IsReservedKeyword(attr.Name.LocalName))
{
continue;
}
var attrMember = ObjectLoaderMember.Find(objectInstance, attr.Name.LocalName, state.IgnoreMissingMembers);
if (attrMember != null)
{
if (state.Resolver != null && state.Resolver(objectInstance, attr.Name.LocalName, attr.Value))
{
continue;
}
var attrValue = ObjectResolver.FromString(attr.Value, attrMember.MemberType);
attrMember.SetValue(attrValue, null);
}
}
return(objectInstance);
}
/// <summary>
/// Populates an object member from the specified data element.
/// </summary>
/// <param name="state">The loader state.</param>
/// <param name="objectInstance">The object instance.</param>
/// <param name="memberElement">The element that defines the member.</param>
/// <param name="skipReservedKeywords">A value indicating whether to skip elements with the same names as reserved keywords.</param>
/// <returns>The object instance.</returns>
private Object PopulateMemberFromElement(ObjectLoaderState state, Object objectInstance, XElement memberElement, Boolean skipReservedKeywords = true)
{
if (IsReservedKeyword(memberElement.Name.LocalName))
{
if (skipReservedKeywords || IsForbiddenKeyword(memberElement.Name.LocalName))
{
return(objectInstance);
}
}
if (state.Resolver != null && state.Resolver(objectInstance, memberElement.Name.LocalName, memberElement.Value))
{
return(objectInstance);
}
var member = ObjectLoaderMember.Find(objectInstance, memberElement.Name.LocalName, state.IgnoreMissingMembers);
if (member == null)
{
return(objectInstance);
}
// Handle array values.
if (member.MemberType.IsArray)
{
PopulateArray(state, member, memberElement);
return(objectInstance);
}
// Handle list values.
if (IsListType(member.MemberType))
{
PopulateList(state, member, memberElement);
return(objectInstance);
}
// Handle generic enumerables.
if (IsEnumerableType(member.MemberType))
{
PopulateEnumerable(state, member, memberElement);
return(objectInstance);
}
// Handle complex and simple objects.
if (memberElement.Elements().Any())
{
var complexType = GetTypeFromElement(state, member.MemberType, memberElement);
var complexTypeValue = member.GetValueFromData(memberElement);
if (complexTypeValue == null)
{
complexTypeValue = CreateObject(state, complexType, null, GetSpecifiedConstructorArguments(memberElement));
if (!complexType.IsValueType)
{
member.SetValueFromData(complexTypeValue, memberElement);
}
}
if (!member.IsIndexer)
{
complexTypeValue = PopulateObjectFromAttributes(state, complexTypeValue, memberElement);
}
complexTypeValue = PopulateObjectFromElements(state, complexTypeValue, memberElement);
if (complexType.IsValueType)
{
member.SetValueFromData(complexTypeValue, memberElement);
}
}
else
{
if (String.IsNullOrEmpty(memberElement.Value))
{
return(objectInstance);
}
var memberValue = ParseValue(memberElement.Value, member.MemberType, state.Culture);
member.SetValueFromData(memberValue, memberElement);
}
return(objectInstance);
}