// Namespace resolution
// if there is only one element with a name then no namespace is needed
// if there are multiple elements with a name
// namespace is required in order to match the correct one
// using declarations can provide implicit namespaces
public static ProcessedType ResolveTagName(string tagName, string namespacePrefix, IReadOnlyList <string> namespaces)
{
FilterAssemblies();
namespaces = namespaces ?? EmptyNamespaceList;
if (string.IsNullOrEmpty(namespacePrefix))
{
namespacePrefix = null;
}
if (string.IsNullOrWhiteSpace(namespacePrefix))
{
namespacePrefix = null;
}
if (templateTypeMap.TryGetValue(tagName, out TypeList typeList))
{
// if this is null we resolve using just the tag name
if (namespacePrefix == null)
{
// if only one type has this tag name we can safely return it
if (typeList.types == null)
{
return(typeList.mainType.Reference());
}
// if there are multiple tags with this name, we need to search our namespaces
// if only one match is found, we can return it. If multiple are found, throw
// and ambiguous reference exception
LightList <ProcessedType> resultList = LightList <ProcessedType> .Get();
for (int i = 0; i < namespaces.Count; i++)
{
for (int j = 0; j < typeList.types.Length; j++)
{
string namespaceName = namespaces[i];
ProcessedType testType = typeList.types[j];
if (namespaceName == testType.namespaceName)
{
resultList.Add(testType);
}
}
}
if (resultList.size == 1)
{
ProcessedType retn = resultList[0];
resultList.Release();
return(retn.Reference());
}
List <string> list = resultList.Select((s) => s.namespaceName).ToList();
throw new ParseException("Ambiguous TagName reference: " + tagName + ". References found in namespaces " + StringUtil.ListToString(list, ", "));
}
if (typeList.types == null)
{
if (namespacePrefix == typeList.mainType.namespaceName)
{
return(typeList.mainType.Reference());
}
}
else
{
// if prefix is not null we can only return a match for that namespace
for (int j = 0; j < typeList.types.Length; j++)
{
ProcessedType testType = typeList.types[j];
if (namespacePrefix == testType.namespaceName)
{
return(testType.Reference());
}
}
}
return(null);
}
if (s_GenericMap.TryGetValue(tagName, out ProcessedType processedType))
{
return(processedType);
}
return(null);
}