/// <summary>
/// Expression of the case
/// </summary>
public bool EvaluatePreConditions(InterpretationContext context)
{
bool retVal = true;
foreach (DataDictionary.Rules.PreCondition preCondition in PreConditions)
{
Interpreter.Expression expression = preCondition.ExpressionTree;
Values.BoolValue value = expression.GetValue(context) as Values.BoolValue;
if (value != null)
{
retVal = retVal && value.Val;
}
else
{
retVal = false;
}
if (!retVal)
{
break;
}
}
return(retVal);
}
/// <summary>
/// Provides the actual value for the preconditions
/// </summary>
/// <param name="context">The context on which the precondition must be evaluated</param>
/// <returns></returns>
public bool EvaluatePreConditions(Interpreter.InterpretationContext context)
{
bool retVal = true;
foreach (DataDictionary.Rules.PreCondition preCondition in PreConditions)
{
try
{
Interpreter.Expression expression = preCondition.ExpressionTree;
Values.BoolValue value = expression.GetValue(context) as Values.BoolValue;
if (value != null)
{
retVal = retVal && value.Val;
}
else
{
retVal = false;
// TODO : Handle Error
}
if (!retVal)
{
break;
}
}
catch (Exception e)
{
preCondition.AddException(e);
retVal = false;
break;
}
}
return(retVal);
}
/// <summary>
/// Parses the image and provides the corresponding value
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
public override Values.IValue getValue(string image)
{
Values.IValue retVal = null;
Interpreter.Expression expression = EFSSystem.Parser.Expression(this, image);
if (expression != null)
{
retVal = expression.GetValue(new Interpreter.InterpretationContext(this));
}
return(retVal);
}
/// <summary>
/// Gets a value based on its image
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
public override Values.IValue getValue(string image)
{
Values.IValue retVal = null;
Interpreter.Expression expression = EFSSystem.Parser.Expression(this, image);
Types.Type type = expression.GetExpressionType() as Types.Type;
if (type != null && Match(type))
{
retVal = expression.GetValue(new Interpreter.InterpretationContext());
}
return(retVal);
}