protected void ExtractInformationFromTreeNodeStream(IIntStream input)
{
ITreeNodeStream nodes = (ITreeNodeStream)input;
this.node = nodes.LT(1);
ITreeAdaptor adaptor = nodes.TreeAdaptor;
IToken payload = adaptor.GetToken(node);
if (payload != null)
{
this.token = payload;
if (payload.Line <= 0)
{
// imaginary node; no line/pos info; scan backwards
int i = -1;
object priorNode = nodes.LT(i);
while (priorNode != null)
{
IToken priorPayload = adaptor.GetToken(priorNode);
if ((priorPayload != null) && (priorPayload.Line > 0))
{
// we found the most recent real line / pos info
this.line = priorPayload.Line;
this.charPositionInLine = priorPayload.CharPositionInLine;
this.approximateLineInfo = true;
break;
}
--i;
priorNode = nodes.LT(i);
}
}
else
{
// node created from real token
this.line = payload.Line;
this.charPositionInLine = payload.CharPositionInLine;
}
}
else if (this.node is ITree)
{
this.line = ((ITree)this.node).Line;
this.charPositionInLine = ((ITree)this.node).CharPositionInLine;
if (this.node is CommonTree)
{
this.token = ((CommonTree)this.node).Token;
}
}
else
{
int type = adaptor.GetNodeType(this.node);
string text = adaptor.GetNodeText(this.node);
this.token = new CommonToken(type, text);
}
}
protected internal void SerializeNode(StringBuilder buf, object t)
{
int ID = adaptor.GetUniqueID(t);
string text = adaptor.GetNodeText(t);
int type = adaptor.GetNodeType(t);
buf.Append("\t");
buf.Append(ID);
buf.Append("\t");
buf.Append(type);
IToken token = adaptor.GetToken(t);
int line = -1;
int pos = -1;
if (token != null)
{
line = token.Line;
pos = token.CharPositionInLine;
}
buf.Append("\t");
buf.Append(line);
buf.Append("\t");
buf.Append(pos);
int tokenIndex = adaptor.GetTokenStartIndex(t);
buf.Append("\t");
buf.Append(tokenIndex);
SerializeText(buf, text);
}
public virtual IToken GetToken(object t)
{
return(adaptor.GetToken(t));
}
public IToken GetToken(object treeNode)
{
return(adaptor.GetToken(treeNode));
}
