/// <summary>
/// Execute the condition
/// </summary>
/// <param name="baZicInterpreter">The <see cref="BaZicInterpreterCore"/>.</param>
/// <param name="parentInterpreter">The parent block interpreter</param>
/// <param name="condition">The condition expression</param>
/// <returns>Return true, false, or null in case of error</returns>
internal static bool?RunCondition(BaZicInterpreterCore baZicInterpreter, BlockInterpreter parentInterpreter, Code.AbstractSyntaxTree.Expression condition)
{
if (condition == null)
{
baZicInterpreter.ChangeState(parentInterpreter, new NullValueException(L.BaZic.Runtime.Interpreters.Statements.ConditionInterpreter.MissingCondition));
return(null);
}
var conditionResult = parentInterpreter.RunExpression(condition);
if (parentInterpreter.IsAborted)
{
return(null);
}
var boolResult = conditionResult as bool?;
if (boolResult != null)
{
return(boolResult.Value);
}
var intResult = conditionResult as int?;
if (intResult != null)
{
switch (intResult.Value)
{
case 1:
return(true);
case 0:
return(false);
default:
baZicInterpreter.ChangeState(parentInterpreter, new OutOfRangeException(L.BaZic.Runtime.Interpreters.Statements.ConditionInterpreter.CastToBool), condition);
return(null);
}
}
baZicInterpreter.ChangeState(parentInterpreter, new OutOfRangeException(L.BaZic.Runtime.Interpreters.Statements.ConditionInterpreter.BooleanExpected), condition);
return(null);
}
/// <summary>
/// Determines whether the interpreter must goes in Idle or Running state and set it if possible.
/// </summary>
internal void UpdateState()
{
if (_baZicInterpreterCore.State == BaZicInterpreterState.Stopped || _baZicInterpreterCore.State == BaZicInterpreterState.StoppedWithError)
{
return;
}
var newState = BaZicInterpreterState.Running;
lock (_unwaitedMethodInvocation)
{
if (!_isRunningMainFunction && _externMethodRunningCount == 0 && _unwaitedMethodInvocation.All(tasks => tasks.Value.Count == 0))
{
newState = BaZicInterpreterState.Idle;
}
}
_baZicInterpreterCore.ChangeState(this, new BaZicInterpreterStateChangeEventArgs(newState));
}