/// <summary>
/// Parses the specified XML content and returns all prototypes which could be parsed.
/// </summary>
/// <param name="xmlContent">The xml content to use for parsing-</param>
/// <param name="parameters">The parameters for the parser.</param>
/// <param name="extend">The result to extend when parsing. Setting this will give the parser the ability to let data to be loaded now inherited from data loaded in extend.</param>
/// <returns></returns>
public void Parse(string xmlContent, string filename, PrototypeParseParameters parameters)
{
// Pre-parse data
var data = new List <SerializedData>();
_PreParse(xmlContent, filename, ref parameters, data);
_Parse(data, ref parameters);
}
private void _PreParse(string xmlContent, string filename, ref PrototypeParseParameters parameters, List <SerializedData> result)
{
ListPool <SerializedData> .GetIfNull(ref result);
ListPool <ParsingError> .GetIfNull(ref errors);
var xElement = XElement.Parse(xmlContent);
// Validity checks
if (!ParsingValidation.ContainerElementName(xElement, filename, errors) ||
!ParsingValidation.ContainerTypeAttribute(xElement, filename, errors))
{
return;
}
// Get type
XAttribute typeAttribute = xElement.Attribute(PrototypeContainerAttributeType);
var type = GetSerializableTypeCacheFor(typeAttribute.Value, ref parameters);
if (!ParsingValidation.TypeFound(xElement, typeAttribute, type, filename, errors))
{
return;
}
// Iterate over nodes
foreach (var xNode in xElement.Nodes())
{
var elementType = type;
var nodeXElement = xNode as XElement;
// Validity checks
if (!ParsingValidation.NodeIsElement(xNode, filename, errors) ||
!ParsingValidation.PrototypeElementName(nodeXElement, filename, errors))
{
continue;
}
var elementTypeAttribute = nodeXElement.Attribute(PrototypeContainerAttributeType);
if (!ReferenceEquals(elementTypeAttribute, null))
{
elementType = GetSerializableTypeCacheFor(elementTypeAttribute.Value, ref parameters);
if (!ParsingValidation.TypeFound(nodeXElement, elementTypeAttribute, elementType, filename, errors))
{
continue;
}
}
// Prepare
var data = new SerializedData(elementType, nodeXElement, filename);
result.Add(data);
}
}
/// <summary>
/// Same as <see cref="Parse(string, string)"/>, but can parse many xmls with relationships / dependencies in them together.
/// This will make it possible to have a prototype in one file which is inherited from in another file.
///
/// The prototypes will be loaded in order and able to resolve references across multiple files!
/// </summary>
public void Parse(string[] xmlContents, string[] filenames, PrototypeParseParameters parameters)
{
List <SerializedData> data = new List <SerializedData>();
if (xmlContents.Length != filenames.Length)
{
throw new ArgumentException("Xml content string count must match filename count in Prototypes.Parse()!");
}
for (int i = 0; i < xmlContents.Length; i++)
{
_PreParse(xmlContents[i], filenames[i], ref parameters, data);
}
_Parse(data, ref parameters);
}
private static SerializableTypeCache GetSerializableTypeCacheFor(string name, ref PrototypeParseParameters parameters)
{
return(PrototypeCaches.GetSerializableTypeCacheFor(name, parameters.standardNamespace));
}
private void _Parse(List <SerializedData> data, ref PrototypeParseParameters parameters)
{
ListPool <ParsingError> .GetIfNull(ref errors);
// Get prototypes with others inheriting from first
// Key = type which is inheriting from something, Value = the type its inheriting from
Dictionary <SerializedData, List <SerializedData> > inheritingFrom = new Dictionary <SerializedData, List <SerializedData> >(); // This is only used for topo sort!
Dictionary <SerializedData, object> instances = new Dictionary <SerializedData, object>();
Dictionary <string, SerializedData> idMapping = new Dictionary <string, SerializedData>();
List <SerializedData> invalid = new List <SerializedData>();
// Pre-parse names, create instances and apply name
foreach (var d in data)
{
if (!ParsingValidation.ElementHasId(d.xElement, d.filename, errors))
{
invalid.Add(d);
continue;
}
// Read name
var attribName = d.xElement.Attribute(PrototypeAttributeIdentifier);
idMapping.Add(attribName.Value, d);
// Check if abstract prototype data
var attribAbstract = d.xElement.Attribute(PrototypeAttributeAbstract);
bool isAbstract = !ReferenceEquals(attribAbstract, null) && string.Equals("True", attribAbstract.Value);
if (!isAbstract)
{
var obj = d.targetType.Create();
instances.Add(d, obj);
(obj as IPrototype).identifier = attribName.Value;
this.prototypes.Add(obj as IPrototype);
}
}
// Remove invalidated entries
foreach (var d in invalid)
{
data.Remove(d);
}
invalid.Clear();
foreach (var d in data)
{
SerializedData inheritedData;
if (!string.IsNullOrEmpty(d.inherits) && idMapping.TryGetValue(d.inherits, out inheritedData))
{
inheritingFrom.GetOrCreate(d).Add(inheritedData);
}
}
PrototypeParserState state = new PrototypeParserState()
{
parameters = parameters
};
// Remove invalidated entries
foreach (var d in invalid)
{
data.Remove(d);
}
// Step 1 - sort by inheritance
List <SerializedData> empty = new List <SerializedData>();
var sorted = data.TSort((sd) => inheritingFrom.ContainsKey(sd) ? inheritingFrom[sd] : empty, true).ToList();
// Step 2 - Preloads the fields and creates sub-data objects
foreach (var d in sorted)
{
d.LoadFields(errors, state);
}
// Step 3 - run sorting algorithm for reference resolve
foreach (var d in data)
{
d.ResolveReferenceFields(this.prototypes, errors, state);
}
// Step 4 - Final data apply
List <SerializedData> inheritingFromTmp = new List <SerializedData>();
foreach (var d in sorted)
{
if (!instances.ContainsKey(d))
{
continue;
}
// Apply inherited data first
if (!string.IsNullOrEmpty(d.inherits))
{
// Look up all inherited data in bottom to top order
inheritingFromTmp.Clear();
var inheritedData = d.inherits;
while (!string.IsNullOrEmpty(inheritedData))
{
SerializedData serializedData = null;
if (!this.serializedData.TryGetValue(inheritedData, out serializedData) && !idMapping.TryGetValue(inheritedData, out serializedData))
{
this.errors.Add(new ParsingError(ParsingErrorSeverity.ERROR, d.filename, (d.xElement as IXmlLineInfo).LinePosition, "Could not find the prototype '" + inheritedData + "' for prototype '" + (instances[d] as IPrototype).identifier + "'! Ignoring inheritance!"));
}
else
{
inheritingFromTmp.Add(serializedData);
}
// Recursion
inheritedData = serializedData.inherits;
}
// Reverse so we apply in top to bottom order
inheritingFromTmp.Reverse();
// Apply
foreach (var _d in inheritingFromTmp)
{
_d.ApplyTo(instances[d], errors, state);
}
}
// Apply data over inherited
d.ApplyTo(instances[d], errors, state);
}
// Step 5 - record serialized data in result
foreach (var kvp in idMapping)
{
this.serializedData.Add(kvp.Key, kvp.Value);
}
}
private static SerializableTypeCache LookupSerializableTypeCache(string name, ref PrototypeParseParameters parameters)
{
return(PrototypeCaches.LookupSerializableTypeCache(name, parameters.standardNamespace));
}
