public async Task <Entity> Solve(Entity expr, Entity.Variable @var)
{
if (lastTokenSource is not null)
{
lastTokenSource.Cancel();
}
var tokenSource = new CancellationTokenSource();
tokenSource.CancelAfter(Timeout);
lastTokenSource = tokenSource;
return(await Task.Run(
() =>
{
MathS.Multithreading.SetLocalCancellationToken(tokenSource.Token);
if (expr is Entity.Statement)
{
return expr.Solve(@var).Simplify();
}
return MathS.Equality(expr, 0).Solve(@var).Simplify();
}, tokenSource.Token
).ContinueWith(t => t.IsCanceled ? "Timeout" : t.Result));
}