public SymPreProcessorWorkerElseIf(SymParserWorkerContext aContext)
: base(aContext)
{
// When the else token is reached, we must work back up the tree
// looking for the previous (i.e. most recent) conditional expression
// node.
SymNodeConditionalExpression condExpNode = SymParserWorkerConditionalExpression.FindMostRecentConditionalExpression(aContext.Document.CurrentNode);
if (condExpNode == null)
{
throw new Exception("Unable to locate most recent condition expression during ELSE IF handling");
}
// There must always be a positive condition node and some kind of condition
if (condExpNode.ChildTypeExists(typeof(SymNodeCondition)) == false)
{
throw new Exception("No child condition node found during ELSE IF handling");
}
// Make the conditional expression the current node
aContext.Document.CurrentNode = condExpNode;
// Make a new condition worker. The condition worker creates a new condition node
// which becomes the new current node.
SymParserWorkerContext context = new SymParserWorkerContext(aContext.Document.Context, this);
SymParserWorkerCondition conditionWorker = new SymParserWorkerCondition(context, new SymNodePreProcessorCondition(aContext.CurrentToken.Value));
AddChild(conditionWorker);
}
public SymPreProcessorWorkerIfndef(SymParserWorkerContext aContext)
: base(aContext)
{
// The base class will make a new conditional expression node at the current document position.
// It will change the parent node to be this new node. We must make a new condition worker
// that will handle reading the condition arguments.
SymParserWorkerContext context = new SymParserWorkerContext(WorkerContext.Document.Context, this);
SymParserWorkerCondition conditionWorker = new SymParserWorkerCondition(context, new SymNodePreProcessorCondition(aContext.CurrentToken.Value));
AddChild(conditionWorker);
}
