protected void SetSharedObjects()
{
if (sharedElement == null)
{
return;
}
foreach (XElement e in sharedElement.Elements())
{
Ns ns = deserializeNamespaceLookup[e.GetPrefixOfNamespace(e.Name.Namespace)];
object obj = null;
bool bs = e.FirstNode.NodeType == System.Xml.XmlNodeType.CDATA;
if (bs)
{
if (Serializer.HasBinarySerializer(ns.Type))
{
XCData cdataNode = e.FirstNode as XCData;
int length = int.Parse(e.Attribute("Length").Value);
byte[] bytes = Convert.FromBase64String(cdataNode.Value);
obj = Serializer.BinaryDeserialize(ns.Type, new BinarySerializerData(bytes, length));
}
}
else
{
if (Serializer.HasXmlSerializer(ns.Type))
{
XAttribute valA = e.Attribute("Value");
obj = Serializer.Deserialize(ns.Type, valA.Value);
}
else
{
obj = Activator.CreateInstance(ns.Type);
sharedObjects_DeferredDeserialization.Add(e.Name.LocalName);
}
}
if (obj == null)
{
throw new Exception("Could not resolve object type " + ns.Type.Name);
}
sharedObjects.Add(e.Name.LocalName, obj);
}
foreach (XElement e in sharedElement.Elements())
{
if (sharedObjects_DeferredDeserialization.Contains(e.Name.LocalName))
{
object obj = sharedObjects[e.Name.LocalName];
SetMembers(obj, e);
}
}
}
private Ns Lookup(Type type)
{
Object_Type ot = ReflectionHelper.Instance.GetObjectType(type);
if (ot == Object_Type.Enum)
{
Type t = Enum.GetUnderlyingType(type);
Ns ns = reverseNsLookup[t];
return(new Ns(ns.Name, t, Object_Type.Enum));
}
return(reverseNsLookup[type]);
}
private void SerializeCollection(object obj, XElement parent, string name, Type type, object value, bool preferBinarySerialization)
{
Ns ns = Lookup(type);
Object_Type ot = ns.ObjectType;
XElement collectionElement = null;
//first thing to do is create the base element that will hold the collection items
switch (ot)
{
case Object_Type.List:
case Object_Type.Dictionary:
{
collectionElement = XHelper.CreateElement(parent, ns.Name, name);
}
break;
case Object_Type.Array:
{
int dimensions = type.GetArrayRank();
Array a = (Array)value;
string dimensionsLengthString = string.Empty;
for (int i = 0; i < dimensions; i++)
{
dimensionsLengthString += (a.GetLength(i).ToString() + ";");
}
dimensionsLengthString = dimensionsLengthString.TrimEnd(new char[] { ';' });
collectionElement = XHelper.CreateElement(parent, ns.Name, name, null, new Dictionary <string, object>()
{
{ "Dimensions", dimensionsLengthString }
});
}
break;
default:
{
throw new Exception("Collection type not implemented");
}
}
SerializeCollectionCallback callback = new SerializeCollectionCallback(SerializeListCallback);
//now iterate through the items and call a callback on each one
switch (ot)
{
case Object_Type.Array:
case Object_Type.List:
{
XElement valuesElement = XHelper.CreateElement(collectionElement, null, "Values");
IEnumerator e = ((IList)value).GetEnumerator();
while (e.MoveNext())
{
callback(obj, valuesElement, e.Current, preferBinarySerialization);
}
}
break;
case Object_Type.Dictionary:
{
XElement keysElement = XHelper.CreateElement(collectionElement, null, "Keys");
XElement valuesElement = XHelper.CreateElement(collectionElement, null, "Values");
IDictionaryEnumerator e = ((IDictionary)value).GetEnumerator();
while (e.MoveNext())
{
callback(obj, keysElement, e.Key, preferBinarySerialization);
callback(obj, valuesElement, e.Value, preferBinarySerialization);
}
}
break;
default:
{
throw new Exception("Collection type not implemented");
}
}
}
protected void GetMember(object objectToSerialize, string name, Type type, object value, XElement e, bool preferBinarySerialization)
{
//this happens when the type of the member is different to the type of the value assigned to it
//for example a member might be declared as a base class or interface and have a derived class assigned to it
Type valType;
if (value != null && (valType = value.GetType()) != type)
{
type = valType;
}
Ns ns = Lookup(type);
Object_Type ot = ns.ObjectType;
switch (ot)
{
case Object_Type.Struct:
case Object_Type.Class:
{
bool isShared = Attribute.IsDefined(ns.Type, typeof(SerializeAsSharedObject), true);
if (isShared)
{
//first thing we do is create an element that links this value to the shared object
XElement assetObjectElement = XHelper.CreateElement(e, ns.Name, name);
if (value == null)
{
XHelper.CreateAttribute(assetObjectElement, "ID", "null");
return;
}
byte[] hash = MD5.Create().ComputeHash(BitShifter.ToByte(value.GetHashCode()));
//prefix with an X to make sure first character is a letter in accordance with XML standard
string s = "X" + string.Concat(hash.Select(x => x.ToString("X2")));
XHelper.CreateAttribute(assetObjectElement, "ID", s);
//then we actually create the shared object if it has not already been created
if (!checksums.Contains(s))
{
checksums.Add(s);
XElement sharedObjectElement = XHelper.CreateElement(sharedElement, ns.Name, s);
if (!Serializer.HasSerializer(type, preferBinarySerialization))
{
if (value != null)
{
GetMembers(value, sharedObjectElement);
}
else
{
CreateValue(sharedObjectElement, type, value, false);
}
}
else
{
CreateValue(sharedObjectElement, type, value, preferBinarySerialization);
}
}
}
else
{
//if this class has a serializer, use it, otherwise we recurse through the objects members and serialize the items individually
if (!Serializer.HasSerializer(type, preferBinarySerialization))
{
if (value != null)
{
GetMembers(value, XHelper.CreateElement(e, ns.Name, name));
}
else
{
CreateValue(XHelper.CreateElement(e, ns.Name, name), type, value, false);
}
}
else
{
CreateValue(XHelper.CreateElement(e, ns.Name, name), type, value, preferBinarySerialization);
}
}
}
break;
case Object_Type.Primitive:
{
//any types that are Object_Type.Primitive have a built in serializer. so we know they can always be serialized
CreateValue(XHelper.CreateElement(e, ns.Name, name), type, value, preferBinarySerialization);
}
break;
case Object_Type.Enum:
{
//any types that are Object_Type.Enum use the built in IntSerializer. so we know they can always be serialized
CreateValue(XHelper.CreateElement(e, ns.Name, name), ns.Type, value, preferBinarySerialization);
}
break;
case Object_Type.List:
case Object_Type.Dictionary:
case Object_Type.Array:
{
//for collections. we need to iterate through the items and serialize each one
//but we need to set this up recursively, in case the items in a collection are themselves collections
if (value != null)
{
if (!Serializer.HasSerializer(type, preferBinarySerialization))
{
SerializeCollection(objectToSerialize, e, name, type, value, preferBinarySerialization);
}
else
{
CreateValue(XHelper.CreateElement(e, ns.Name, name), type, value, preferBinarySerialization);
}
}
else
{
CreateValue(XHelper.CreateElement(e, ns.Name, name), type, value, preferBinarySerialization);
}
}
break;
default:
CreateValue(XHelper.CreateElement(e, ns.Name, name), type, null, preferBinarySerialization); //if we can't determine the object type, just serialize it as null
break;
}
}
private object DeserializeCollection(Ns ns, XElement e, bool isBinarySerialized)
{
//todo: handle null values for dictrionary and array the same way they are handled for list
DeserializeCollectionCallback callback = new DeserializeCollectionCallback(DeserializeListCallback);
switch (ns.ObjectType)
{
case Object_Type.List:
{
XElement valuesElement = e.Element("Values");
if (valuesElement == null)
{
XAttribute valueAttribute = e.Attribute("Value");
if (valueAttribute != null)
{
if (valueAttribute.Value.ToLower() == "null")
{
return(null);
}
else
{
throw new Exception("Malformed document");
}
}
else
{
//no values element to define values for the collection and no value element for a serialzier or null value. bad
throw new Exception("Collection Values element missing, Malformed document");
}
}
else
{
List <XElement> values = valuesElement.Elements().ToList();
IList il = Activator.CreateInstance(ns.Type) as IList;
foreach (XElement item in values)
{
il.Add(callback(item, isBinarySerialized));
}
return(il);
}
}
case Object_Type.Dictionary:
{
List <XElement> keys = e.Element("Keys").Elements().ToList();
List <XElement> values = e.Element("Values").Elements().ToList();
IDictionary id = Activator.CreateInstance(ns.Type) as IDictionary;
if (keys.Count != values.Count)
{
throw new Exception("Dictionary.Keys.Count != Dictionary.Values.Count, Malformed document");
}
for (int i = 0; i < keys.Count; i++)
{
object key = callback(keys[i], isBinarySerialized);
object value = callback(values[i], isBinarySerialized);
id.Add(key, value);
}
return(id);
}
case Object_Type.Array:
{
int dimensions = ns.Type.GetArrayRank();
string[] dimensionLengthStrings = e.Attribute("Dimensions").Value.Split(new char[] { ';' });
int[] dimensionLengths = new int[dimensionLengthStrings.Length];
for (int i = 0; i < dimensions; i++)
{
dimensionLengths[i] = int.Parse(dimensionLengthStrings[i]);
}
Type itemType = ns.Type.GetElementType();
List <XElement> values = e.Element("Values").Elements().ToList();
Array a = Array.CreateInstance(itemType, dimensionLengths);
for (int i = 0; i < a.Length; i++)
{
a.SetValue(callback(values[i], isBinarySerialized), Helpers.GetArrayIndices(dimensions, dimensionLengths, i));
}
return(a);
}
}
return(null);
}
protected object SetMember(XElement e, bool isBinarySerialized)
{
Ns ns = deserializeNamespaceLookup[e.GetPrefixOfNamespace(e.Name.Namespace)];
Object_Type ot = ns.ObjectType;
switch (ot)
{
case Object_Type.Struct:
case Object_Type.Class:
{
bool isShared = Attribute.IsDefined(ns.Type, typeof(SerializeAsSharedObject), true);
if (isShared)
{
string val = e.Attribute("ID").Value;
if (val == "null")
{
return(null);
}
else
{
return(sharedObjects[val]);
}
}
if (!Serializer.HasSerializer(ns.Type, isBinarySerialized))
{
//In this case the serialized object had a value of null, so we just return null
if (e.Attribute("Value") != null && e.Attribute("Value").Value == "null")
{
return(null);
}
else
{
object instance = Activator.CreateInstance(ns.Type);
SetMembers(instance, e);
return(instance);
}
}
else
{
if (isBinarySerialized)
{
XCData cdataNode = e.FirstNode as XCData;
int length = int.Parse(e.Attribute("Length").Value);
byte[] bytes = Convert.FromBase64String(cdataNode.Value);
return(Serializer.BinaryDeserialize(ns.Type, new BinarySerializerData(bytes, length)));
}
else
{
if (e.Attribute("Value") == null)
{
Log.Instance.Write(Log_Severity.Warning, "{0} does not appear to be using the built in serializer. Save to update file output", ns.Type.Name);
object instance = Activator.CreateInstance(ns.Type);
SetMembers(instance, e);
return(instance);
}
return(Serializer.Deserialize(ns.Type, e.Attribute("Value").Value));
}
}
}
case Object_Type.Primitive:
{
return(Serializer.Deserialize(ns.Type, e.Attribute("Value").Value));
}
case Object_Type.Enum:
{
return(Enum.ToObject(ns.Type, Serializer.Deserialize(typeof(int), e.Attribute("Value").Value)));
}
case Object_Type.List:
case Object_Type.Dictionary:
case Object_Type.Array:
{
if (Serializer.HasSerializer(ns.Type, isBinarySerialized))
{
if (isBinarySerialized)
{
XCData cdataNode = e.FirstNode as XCData;
int length = int.Parse(e.Attribute("Length").Value);
byte[] bytes = Convert.FromBase64String(cdataNode.Value);
return(Serializer.BinaryDeserialize(ns.Type, new BinarySerializerData(bytes, length)));
}
else
{
return(Serializer.Deserialize(ns.Type, e.Attribute("Value").Value));
}
}
else
{
return(DeserializeCollection(ns, e, isBinarySerialized));
}
}
default:
return(null);
}
}
