public override Object Perform(Object obj)
{
int selectedCaseIndex = -1;
int state = (Int32)semanticOperationHandler.GetOperationState(this, "state", INIT);
if (state == INIT)
{
state = INTER;
if (cases != null)
{
for (int i = 0; i < cases.Count; ++i)
{
if (semanticOperationHandler.CheckConditionsIfAny(cases[i]))
{
semanticOperationHandler.SetOperationState(this, "select", i);
break;
}
}
}
}
if (selectedCaseIndex >= 0)
{
IfSemanticOperation aCase = cases[selectedCaseIndex];
List <SemanticOperation> nestedSemanticActions = aCase.NestedSemanticActionList;
foreach (SemanticOperation nestedSemanticAction in nestedSemanticActions)
{
semanticOperationHandler.HandleSemanticOperation(nestedSemanticAction, documentParser,
sessionScope);
}
}
else
{
if (otherwise != null)
{
List <SemanticOperation> otherwiseActions = otherwise.NestedSemanticActionList;
foreach (SemanticOperation action in otherwiseActions)
{
semanticOperationHandler.HandleSemanticOperation(action, documentParser, sessionScope);
}
}
}
return(null);
}
public void HandleIf(IfSemanticOperation operation, DocumentParser parser, SemanticsGlobalScope infoCollector)
{
// conditions have been checked in handleSemanticAction()
try
{
SetOperationState(operation, "state", SemanticOperation.INTER);
List <SemanticOperation> nestedSemanticActions = operation.NestedSemanticActionList;
foreach (SemanticOperation nestedSemanticAction in nestedSemanticActions)
{
HandleSemanticOperation(nestedSemanticAction, parser, infoCollector);
}
}
catch (Exception e)
{
throw new IfOperationException(e, operation, semanticOperationVariableMap);
}
}