CandleExpressionCondition

CandleExpressionCondition

public CandleExpressionCondition(IFileSystem fileSystem, string expression)

candleExpressionCondition = CandleExpressionCondition(fileSystem, expression)

Create instance. The expression is compiled by CancellationToken).

fileSystem

File system.

expression

Expression

Expression

public string Expression { get; private set; }

value = candleExpressionCondition.Expression
candleExpressionCondition.Expression = value

Expression.

IsEmpty

public bool IsEmpty { get; }

value = candleExpressionCondition.IsEmpty

Formula is not present.

CheckCondition

public bool CheckCondition(ReadOnlySpan<ICandleMessage> candles, int candleIndex)

result = candleExpressionCondition.CheckCondition(candles, candleIndex)

Check if the condition is met for the given candles. The condition has to be prepared by CancellationToken).

candles

The candles to check the condition against.

candleIndex

The index of the candle in the candles array.

Returns: Check result.

LoadAsync

public Task LoadAsync(SettingsStorage storage, CancellationToken cancellationToken)

result = candleExpressionCondition.LoadAsync(storage, cancellationToken)

Asynchronously loads the state of the object from the specified SettingsStorage.

storage

The SettingsStorage instance from which to load the data.

cancellationToken

A token to monitor for cancellation requests.

Returns: A task that represents the asynchronous load operation.

PrepareAsync

public ValueTask PrepareAsync(CancellationToken cancellationToken)

result = candleExpressionCondition.PrepareAsync(cancellationToken)

Compile Expression, so that the condition can be evaluated. Repeated calls do nothing.

cancellationToken

CancellationToken

Returns: ValueTask

SaveAsync

public Task SaveAsync(SettingsStorage storage, CancellationToken cancellationToken)

result = candleExpressionCondition.SaveAsync(storage, cancellationToken)

Asynchronously saves the state of the object to the specified SettingsStorage.

storage

The SettingsStorage instance to which to save the data.

cancellationToken

A token to monitor for cancellation requests.

Returns: A task that represents the asynchronous save operation.

ToString

public override string ToString()

result = candleExpressionCondition.ToString()

Returns a string representation of the tuple, with values separated by commas.

Returns: A string representing the tuple's values.

Variables

public static readonly Variable[] Variables

value = CandleExpressionCondition.Variables

Candle formula variables.