private void EvaluateDefineNodes(SymNode aNode, SymTokenDocument aDocument, SymParserDocumentContext aContext)
{
foreach (SymNode n in aNode)
{
if (n is SymTokenBalancerMarkerLevelNode)
{
bool added = false;
//
SymTokenBalancerMarkerLevelNode levelNode = (SymTokenBalancerMarkerLevelNode)n;
if (levelNode.IsFunction)
{
SymNodeToken functionNameNode = levelNode.FunctionName;
//
if (functionNameNode.Token.Equals(iDefinedNodeToken))
{
SymTokenContainer defineName = levelNode.ChildTokens;
string flattened = defineName.CoalescedTokenValue;
// Get definition result
bool isDefined = aContext.DefineDirectory.IsDefined(flattened);
SymToken isDefinedToken = new SymToken(isDefined.ToString().ToLower(), SymToken.TClass.EClassAlphaNumeric, SymToken.TType.ETypeAlphaNumericNormal);
// Remove already added "defined" text node from output document
if (aDocument.CurrentNode.LastChild is SymNodeToken)
{
SymNodeToken last = (SymNodeToken)aDocument.CurrentNode.LastChild;
if (last.Token.Equals(iDefinedNodeToken))
{
last.Remove();
}
}
// Add result
aDocument.CurrentNode.Add(new SymNodeToken(isDefinedToken));
added = true;
}
}
if (added == false)
{
if (levelNode.HasPrevious && levelNode.Previous is SymTokenBalancerNodeEmittedElement)
{
levelNode.EmittedElementPrevious.AddToDocumentIfEmittable(aDocument);
}
SymNode newLevelNode = new SymNodeAddAsChild();
aDocument.CurrentNode.Add(newLevelNode);
aDocument.CurrentNode = newLevelNode;
EvaluateDefineNodes(n, aDocument, aContext);
aDocument.MakeParentCurrent();
if (levelNode.HasNext && levelNode.Next is SymTokenBalancerNodeEmittedElement)
{
levelNode.EmittedElementNext.AddToDocumentIfEmittable(aDocument);
}
}
}
else if (n is SymNodeToken)
{
SymNodeToken node = (SymNodeToken)n;
SymNodeToken copy = new SymNodeToken(node.Token);
aDocument.CurrentNode.Add(copy);
}
else if (n is SymTokenBalancerNodeEmittedElement)
{
// Handled when the level marker is reached
}
}
}
public static SymNode Trim(SymNode aNode, bool aRecurse)
{
// Forward pass
while (aNode.HasChildren)
{
SymNode n = aNode.FirstChild;
if (n is SymNodeToken)
{
SymNodeToken nodeToken = (SymNodeToken)n;
bool isWhiteSpace = (nodeToken.Token.Class == SymToken.TClass.EClassWhiteSpace);
//
if (isWhiteSpace)
{
System.Diagnostics.Debug.Assert(n.HasChildren == false);
nodeToken.Remove();
}
else
{
break;
}
}
else
{
break;
}
}
// Backward pass
while (aNode.HasChildren)
{
SymNode n = aNode.LastChild;
if (n is SymNodeToken)
{
SymNodeToken nodeToken = (SymNodeToken)n;
bool isWhiteSpace = (nodeToken.Token.Class == SymToken.TClass.EClassWhiteSpace);
//
if (isWhiteSpace)
{
System.Diagnostics.Debug.Assert(n.HasChildren == false);
nodeToken.Remove();
}
else
{
break;
}
}
else
{
break;
}
}
// Child pass
if (aRecurse)
{
foreach (SymNode n in aNode)
{
if (n.HasChildren)
{
Trim(n, aRecurse);
}
}
}
return(aNode);
}