/// <summary>
/// Provides the actual value for the preconditions
/// </summary>
/// <param name="context">The context on which the precondition must be evaluated</param>
/// <param name="explanation">The explanation part to fill, if any</param>
/// <param name="log">indicates that this should be logged</param>
/// <param name="runner"></param>
/// <returns></returns>
public bool EvaluatePreConditions(InterpretationContext context, ExplanationPart explanation, Runner runner)
{
bool retVal = true;
foreach (PreCondition preCondition in PreConditions)
{
try
{
ExplanationPart subExplanation = ExplanationPart.CreateNamedSubExplanation(explanation,
"PreCondition ", preCondition);
BoolValue value = preCondition.Expression.GetExpressionValue(context, subExplanation) as BoolValue;
ExplanationPart.SetNamable(subExplanation, value);
if (value != null)
{
retVal = retVal && value.Val;
}
else
{
retVal = false;
// TODO : Handle Error
}
if (!retVal)
{
break;
}
}
catch (Exception e)
{
preCondition.Expression.AddErrorAndExplain(e.Message, explanation);
retVal = false;
break;
}
}
return(retVal);
}
