static partial void ValidateElementNotNull(Promise promise, string argName, string message, int skipFrames)
{
if (promise == null)
{
throw new ElementNullException(argName, message, Internal.GetFormattedStacktrace(skipFrames + 1));
}
}
static protected void ValidateNotDisposed(object valueContainer, int skipFrames)
{
Internal.ValidateThreadAccess(skipFrames + 1);
if (IsDisposed(valueContainer))
{
throw new PromiseDisposedException("Always nullify your references when you are finished with them!" +
" Call Retain() if you want to perform operations after the object has finished. Remember to call Release() when you are finished with it!"
, Internal.GetFormattedStacktrace(skipFrames + 1));
}
}
partial void ValidateReturn(Promise other)
{
if (other == null)
{
// Returning a null from the callback is not allowed.
throw new InvalidReturnException("A null promise was returned.");
}
// Validate returned promise as not disposed.
if (IsDisposed(other._valueOrPrevious))
{
throw new InvalidReturnException("A disposed promise was returned.", Internal.GetFormattedStacktrace(other));
}
// A promise cannot wait on itself.
// This allows us to check All/Race/First Promises iteratively.
ValueLinkedStack <InternalProtected.PromisePassThrough> passThroughs = new ValueLinkedStack <InternalProtected.PromisePassThrough>();
var prev = other;
Repeat:
for (; prev != null; prev = prev._valueOrPrevious as Promise)
{
if (prev == this)
{
throw new InvalidReturnException("Circular Promise chain detected.", Internal.GetFormattedStacktrace(other));
}
prev.BorrowPassthroughs(ref passThroughs);
}
if (passThroughs.IsNotEmpty)
{
// passThroughs are removed from their targets before adding to passThroughs. Add them back here.
var passThrough = passThroughs.Pop();
prev = passThrough.Owner;
passThrough.Target.ReAdd(passThrough);
goto Repeat;
}
}
/// <summary>
/// Unregister the callback from the associated <see cref="CancelationToken"/>.
/// </summary>
public void Unregister()
{
if (!TryUnregister())
{
throw new InvalidOperationException("CancelationRegistration is not registered.", Internal.GetFormattedStacktrace(1));
}
}
/// <summary>
/// Get the result. If the Promise resolved successfully, this will return without error.
/// If the Promise was rejected, this will throw an <see cref="UnhandledException"/>.
/// If the Promise was canceled, this will throw a <see cref="CanceledException"/>.
/// </summary>
public void GetResult()
{
ValidateYieldInstructionOperation(_value, 1);
if (_state == State.Pending)
{
throw new InvalidOperationException("Promise is still pending. You must wait for the promse to settle before calling GetResult.", Internal.GetFormattedStacktrace(1));
}
if (_state == State.Resolved)
{
return;
}
// Throw unhandled exception or canceled exception.
throw ((Internal.IThrowable)_value).GetException();
}
protected static void ValidateProgressValue(float value, int skipFrames)
{
const string argName = "progress";
if (value < 0f || value > 1f || float.IsNaN(value))
{
throw new ArgumentOutOfRangeException(argName, "Must be between 0 and 1.", Internal.GetFormattedStacktrace(skipFrames + 1));
}
}
static protected void ThrowProgressException(int skipFrames)
{
throw new InvalidOperationException("Progress is disabled. Remove PROTO_PROMISE_PROGRESS_DISABLE from your compiler symbols to enable progress reports.", Internal.GetFormattedStacktrace(skipFrames + 1));
}
public static Promise <T> CreateFirst <T, TEnumerator>(TEnumerator promises) where TEnumerator : IEnumerator <Promise <T> >
{
ValidateArgument(promises, "promises", 2);
if (!promises.MoveNext())
{
throw new EmptyArgumentException("promises", "You must provide at least one element to First.", Internal.GetFormattedStacktrace(2));
}
int count;
var passThroughs = WrapInPassThroughs <T, TEnumerator>(promises, out count);
return(FirstPromise <T> .GetOrCreate(passThroughs, count));
}
/// <summary>
/// Release all resources used by this <see cref="CancelationSource"/>. This instance will no longer be valid.
/// </summary>
public void Dispose()
{
if (!IsValid)
{
throw new InvalidOperationException("CancelationSource.Dispose: source is not valid.", Internal.GetFormattedStacktrace(1));
}
_ref.Dispose();
}
/// <summary>
/// Communicates a request for cancelation with the provided reason, and invokes all callbacks that are registered to any associated <see cref="CancelationToken"/>.
/// </summary>
public void Cancel <TCancel>(TCancel reason)
{
if (!IsValid)
{
throw new InvalidOperationException("CancelationSource.Cancel: source is not valid.", Internal.GetFormattedStacktrace(1));
}
if (_ref.IsCanceled)
{
throw new InvalidOperationException("CancelationSource.Cancel: source was already canceled.", Internal.GetFormattedStacktrace(1));
}
_ref.SetCanceled(ref reason);
}
/// <summary>
/// Release this instance. Allows resources to be released when the associated <see cref="CancelationSource"/> is disposed (if <see cref="Release"/> has been called for all <see cref="Retain"/> calls).
/// <para/>This should always be paired with a call to <see cref="Retain"/>
/// </summary>
public void Release()
{
if (!CanBeCanceled)
{
throw new InvalidOperationException("CancelationToken.Release: token cannot be canceled.", Internal.GetFormattedStacktrace(1));
}
_ref.Release();
}
/// <summary>
/// Capture a value and register a delegate that will be invoked with the captured value and the cancelation reason when this <see cref="CancelationToken"/> is canceled.
/// If this is already canceled, the callback will be invoked immediately.
/// </summary>
/// <param name="callback">The delegate to be executed when the <see cref="CancelationToken"/> is canceled.</param>
/// <returns>The <see cref="CancelationRegistration"/> instance that can be used to unregister the callback.</returns>
public CancelationRegistration Register <TCapture>(TCapture captureValue, Action <TCapture, ReasonContainer> callback)
{
if (!CanBeCanceled)
{
throw new InvalidOperationException("CancelationToken.Register: token cannot be canceled.", Internal.GetFormattedStacktrace(1));
}
ValidateArgument(callback, "callback", 1);
if (_ref.IsCanceled)
{
callback.Invoke(captureValue, new ReasonContainer(_ref.ValueContainer));
return(default(CancelationRegistration));
}
var cancelDelegate = Internal.CancelDelegate <Internal.CancelDelegateToken <TCapture> > .GetOrCreate();
cancelDelegate.canceler = new Internal.CancelDelegateToken <TCapture>(ref captureValue, callback);
return(new CancelationRegistration(_ref, cancelDelegate));
}
/// <summary>
/// Try to get the cancelation value casted to <typeparamref name="T"/>.
/// Returns true if successful, false otherwise.
/// </summary>
public bool TryGetCancelationValueAs <T>(out T value)
{
if (!IsCancelationRequested)
{
throw new InvalidOperationException("CancelationToken.CancelationValue: token has not been canceled.", Internal.GetFormattedStacktrace(1));
}
return(Internal.TryConvert(_ref.ValueContainer, out value));
}
