protected override ParseTreeNode GetResultNode(ParsingContext context)
{
int childCount = Production.RValues.Count;
int firstChildIndex = context.ParserStack.Count - childCount;
var span = context.ComputeStackRangeSpan(childCount);
var newNode = new ParseTreeNode(Production.LValue, span);
newNode.Tokens = context.ComputeTokenSubList(childCount);
if (childCount > 0) //if it is not empty production - might happen for MakeStarRule
{
var listNode = context.ParserStack[firstChildIndex]; //get the transient list with all members - it is the first child node
newNode.ChildNodes.AddRange(listNode.ChildNodes); //copy all list members
}
return(newNode);
}
protected virtual ParseTreeNode GetResultNode(ParsingContext context)
{
var childCount = Production.RValues.Count;
int firstChildIndex = context.ParserStack.Count - childCount;
var span = context.ComputeStackRangeSpan(childCount);
var newNode = new ParseTreeNode(Production.LValue, span);
newNode.Tokens = context.ComputeTokenSubList(childCount);
for (int i = 0; i < childCount; i++)
{
var childNode = context.ParserStack[firstChildIndex + i];
if (childNode.IsPunctuationOrEmptyTransient())
{
continue; //skip punctuation or empty transient nodes
}
newNode.ChildNodes.Add(childNode);
}//for i
return(newNode);
}
protected override ParseTreeNode GetResultNode(ParsingContext context)
{
var topIndex = context.ParserStack.Count - 1;
var childCount = Production.RValues.Count;
for (int i = 0; i < childCount; i++)
{
var child = context.ParserStack[topIndex - i];
if (child.IsPunctuationOrEmptyTransient())
{
continue;
}
return(child);
}
//Otherwise return an empty transient node; if it is part of the list, the list will skip it
var span = context.ComputeStackRangeSpan(childCount);
return(new ParseTreeNode(Production.LValue, span)
{
Tokens = context.ComputeTokenSubList(childCount)
});
}