/// <inheritdoc />
protected override async Task <Result <Array <Entity>, IError> > Run(
IStateMonad stateMonad,
CancellationToken cancellationToken)
{
var entityStreamResult = await EntityStream.Run(stateMonad, cancellationToken);
if (entityStreamResult.IsFailure)
{
return(entityStreamResult.ConvertFailure <Array <Entity> >());
}
var currentState = stateMonad.GetState().ToImmutableDictionary();
async ValueTask <Entity> Action(Entity record)
{
await using var scopedMonad = new ScopedStateMonad(
stateMonad,
currentState,
new KeyValuePair <VariableName, object>(Variable, record)
);
var result = await Function.Run(scopedMonad, cancellationToken);
if (result.IsFailure)
{
throw new ErrorException(result.Error);
}
return(result.Value);
}
var newStream = entityStreamResult.Value.SelectAwait(Action);
return(newStream);
}
public async Task ScopedStateMonadShouldDisposeVariablesThatItRemoves()
{
var repo = new MockRepository(MockBehavior.Strict);
var sd = repo.Create <IDoubleDisposable>();
var monad1 = CreateMonad(repo);
var scopedMonad = new ScopedStateMonad(
monad1,
ImmutableDictionary <VariableName, object> .Empty
);
sd.Setup(x => x.DisposeAsync(scopedMonad)).Returns(Task.CompletedTask);
sd.Setup(x => x.Dispose());
await scopedMonad.SetVariableAsync(new VariableName("V"), sd.Object, false, null);
await scopedMonad.RemoveVariableAsync(new VariableName("V"), true, null);
repo.VerifyAll();
}
public async Task ScopedStateMonadShouldDisposeVariablesWhenItIsDisposed()
{
var repo = new MockRepository(MockBehavior.Strict);
var sd = repo.Create <IDoubleDisposable>();
var monad1 = CreateMonad(repo);
var scopedMonad = new ScopedStateMonad(
monad1,
ImmutableDictionary <VariableName, object> .Empty
);
// ReSharper disable once AccessToDisposedClosure
sd.Setup(x => x.DisposeAsync(scopedMonad)).Returns(Task.CompletedTask);
sd.Setup(x => x.Dispose());
await scopedMonad.SetVariableAsync(new VariableName("V"), sd.Object, false, null);
await scopedMonad.DisposeAsync();
repo.VerifyAll();
}
/// <inheritdoc />
protected override async Task <Result <StringStream, IError> > Run(
IStateMonad stateMonad,
CancellationToken cancellationToken)
{
var stringResult =
await String.Run(stateMonad, cancellationToken).Map(x => x.GetStringAsync());
if (stringResult.IsFailure)
{
return(stringResult.ConvertFailure <StringStream>());
}
var patternResult =
await Pattern.Run(stateMonad, cancellationToken).Map(x => x.GetStringAsync());
if (patternResult.IsFailure)
{
return(patternResult.ConvertFailure <StringStream>());
}
var ignoreCaseResult = await IgnoreCase.Run(stateMonad, cancellationToken);
if (ignoreCaseResult.IsFailure)
{
return(ignoreCaseResult.ConvertFailure <StringStream>());
}
var currentState = stateMonad.GetState().ToImmutableDictionary();
var regexOptions = RegexOptions.None;
if (ignoreCaseResult.Value)
{
regexOptions |= RegexOptions.IgnoreCase;
}
var regex = new Regex(patternResult.Value, regexOptions);
var input = stringResult.Value;
var sb = new StringBuilder();
var lastIndex = 0;
foreach (Match match in regex.Matches(input))
{
sb.Append(input, lastIndex, match.Index - lastIndex);
await using var scopedMonad = new ScopedStateMonad(
stateMonad,
currentState,
new KeyValuePair <VariableName, object>(Variable, new StringStream(match.Value))
);
var result = await Function.Run(scopedMonad, cancellationToken)
.Map(x => x.GetStringAsync());
if (result.IsFailure)
{
return(result.ConvertFailure <StringStream>());
}
sb.Append(result.Value);
lastIndex = match.Index + match.Length;
}
sb.Append(input, lastIndex, input.Length - lastIndex);
return(new StringStream(sb.ToString()));
}
/// <inheritdoc />
protected override async Task <Result <Unit, IError> > Run(
IStateMonad stateMonad,
CancellationToken cancellationToken)
{
var sclResult = await SCL.Run(stateMonad, cancellationToken).Map(x => x.GetStringAsync());
if (sclResult.IsFailure)
{
return(sclResult.ConvertFailure <Unit>());
}
List <VariableName> variablesToExport;
if (Export is null)
{
variablesToExport = new List <VariableName>();
}
else
{
var exportResult = await Export.Run(stateMonad, cancellationToken)
.Bind(x => x.GetElementsAsync(cancellationToken));
if (exportResult.IsFailure)
{
return(exportResult.ConvertFailure <Unit>());
}
variablesToExport = exportResult.Value.Select(x => x.GetString())
.Select(x => new VariableName(x))
.ToList();
}
var stepResult = SCLParsing.TryParseStep(sclResult.Value)
.Bind(x => x.TryFreeze(TypeReference.Unit.Instance, stateMonad.StepFactoryStore));
if (stepResult.IsFailure)
{
return(stepResult.ConvertFailure <Unit>());
}
await using var monad2 = new ScopedStateMonad(
stateMonad,
ImmutableDictionary <VariableName, object> .Empty
);
await stepResult.Value.Run <Unit>(monad2, cancellationToken);
foreach (var variable in variablesToExport)
{
var value = monad2.GetVariable <object>(variable);
var valueV = value.IsSuccess ? value.Value : null;
await monad2.RemoveVariableAsync(
variable,
false,
this
); //Remove the variable to prevent it being disposed
await stateMonad.SetVariableAsync(variable, valueV, true, this);
}
return(Unit.Default);
}
