/// <summary>
/// Creates an instance of the class
/// </summary>
/// <param name="parent">affected netoffice core</param>
/// <exception cref="ArgumentNullException">argument is null</exception>
internal CoreFactories(Core parent)
{
if (null == parent)
{
throw new ArgumentException("parent");
}
Parent = parent;
FactoryAssemblies = new FactoryList();
DependentAssemblies = new List <DependentAssembly>();
}
/// <summary>
/// Parses the next element in the file stream.
/// </summary>
/// <exception cref="FileNotLoadedException">
/// Thrown if part of the next element has not been downloaded yet.
/// </exception>
/// <returns>An asynchronous Task to which will yield the next Element.</returns>
public async Task <EbmlElement?> ParseNextElement(EbmlElement?parent = null)
{
var position = DataAccessor.Position;
// Throws FileNotLoadedException if the file has not been loaded at the position
var id = await ParseNextId().ConfigureAwait(false);
// Throws FileNotLoadedException if the file has not been loaded at the position
var dataSize = await ParseNextVInt().ConfigureAwait(false);
var factory = FactoryList.GetValueOrDefault(id.Size);
var element = factory?.Create(dataSize, position, parent);
if (element != null)
{
return(element);
}
if (ShouldLog)
{
ConsoleExtension.WriteWarning($"No factory found for element {id.Size:X} at position: {position}");
}
DataAccessor.Position = position + dataSize.ByteSize + dataSize.DataSize + id.ByteSize;
return(null);
}