void ResolveNext(ResolveCallState resolveCallState)
{
if (resolveCallState.StackedRetrievers.Count > 0)
{
MetadataRetriever retriever = resolveCallState.StackedRetrievers.Pop();
if (resolveCallState.HasBeenUsed(retriever))
{
this.ResolveNext(resolveCallState);
}
else
{
if (resolveCallState.ResolvedMaxResolvedReferences)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SFxResolvedMaxResolvedReferences)));
}
resolveCallState.LogUse(retriever);
resolveCallState.HandleSection(retriever.Retrieve(resolveCallState.TimeoutHelper));
this.ResolveNext(resolveCallState);
}
}
}
IAsyncResult BeginGetMetadata(MetadataRetriever retriever, AsyncCallback callback, object asyncState)
{
ResolveCallState state = new ResolveCallState(this.maximumResolvedReferences, this.resolveMetadataReferences, new TimeoutHelper(this.OperationTimeout), this);
state.StackedRetrievers.Push(retriever);
return new AsyncMetadataResolver(state, callback, asyncState);
}
MetadataSet GetMetadata(MetadataRetriever retriever)
{
ResolveCallState resolveCallState = new ResolveCallState(this.maximumResolvedReferences, this.resolveMetadataReferences, new TimeoutHelper(this.OperationTimeout), this);
resolveCallState.StackedRetrievers.Push(retriever);
this.ResolveNext(resolveCallState);
return resolveCallState.MetadataSet;
}
internal AsyncMetadataResolver(ResolveCallState resolveCallState, AsyncCallback callerCallback, object callerAsyncState)
: base(callerCallback, callerAsyncState)
{
if (resolveCallState == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("resolveCallState");
}
this.resolveCallState = resolveCallState;
Exception exception = null;
bool doneResolving = false;
try
{
doneResolving = this.ResolveNext();
}
#pragma warning suppress 56500 // covered by FxCOP
catch (Exception e)
{
if (Fx.IsFatal(e))
throw;
exception = e;
doneResolving = true;
}
if (doneResolving)
{
this.Complete(true, exception);
}
}
