public PreviousSymbol(LexerResult s, ParseTreeNode p, List <string> r, List <string> n,
bool optional)
{
symbol = (LexerResult)s.Clone(); // (lex results never mutated)
parent = p; // .clone(); // Capture state of subtree on construction.
if (s.BLEFT != null)
{
parent.children.Add(s.BLEFT);
}
if (s.TLEFT != null)
{
parent.children.Add(s.TLEFT);
}
// Avoid crashing on null values.
if (r == null)
{
regions = new List <string>();
regionNonterminals = new List <string>();
}
else
{
regions = r;
regionNonterminals = n;
}
regionsOptional = optional;
}
public override bool Equals(object obj)
{
if (obj == null || !(obj is LexerResult))
{
return(false);
}
LexerResult o = obj as LexerResult;
if (!segment.GetUniqueName().Equals(o.segment.GetUniqueName()))
{
return(false);
}
// test classifications
if (segment.classification.Count != o.segment.classification.Count)
{
return(false);
}
for (int i = 0; i < segment.classification.Count; i++)
{
Classification c1 = segment.classification[i];
Classification c2 = o.segment.classification[i];
if (!c1.Equals(c2))
{
return(false);
}
}
return(true);
}
public PreviousSymbol(ParseTreeNode p, bool optional)
{
symbol = null;
parent = p;
regions = new List <string>();
regionNonterminals = new List <string>();
regionsOptional = optional;
}
public SymbolTreeNode(LexerResult selectedResult)
{
nodeType = selectedResult.segment.classification[0].symbol;
symbolData = selectedResult; // not cloning (assumption: lexer results never modified).
lexResult = selectedResult; // redundant?
strokes = selectedResult.segment.strokes;
lbt = selectedResult.lbt;
children = null;
id_num = Interlocked.Increment(ref INST_ID);
}
public object Clone()
{
LexerResult r = new LexerResult();
r.segment = segment.Clone() as Segment;
r.lbt = new LBT(lbt);
r.adj = adj;
r.TLEFT = TLEFT;
r.BLEFT = BLEFT;
return(r);
}
public int CompareTo(object obj)
{
// Need to negate comparison to sort by decreasing probability.
if (obj is LexerResult)
{
LexerResult t = (LexerResult)obj;
if (t.segment.classification.Count > 0 && segment.classification.Count > 0)
{
return(-(segment.classification[0].probability.
CompareTo(t.segment.classification[0].probability)));
}
else
{
throw new ArgumentException("LexerResult::CompareTo applied where object or" +
" comparison has no associated classification results.");
}
}
throw new ArgumentException("LexerResult::CompareTo(): object is not a LexerResultn.");
}
public override ParseTreeNode clone()
{
// Node labels and stoke data will be fixed for a given node (ref. only), but children will
// differ for different parse trees (new copy).
LexerResult resultCopy = (LexerResult)symbolData.Clone();
SymbolTreeNode nodeCopy = new SymbolTreeNode(resultCopy);
nodeCopy.strokes = strokes;
nodeCopy.lbt = null;
if (lbt != null)
{
nodeCopy.lbt = new LBT(lbt); // copy lbt
}
if (children != null)
{
foreach (ParseTreeNode child in children)
{
nodeCopy.children.Add(child.clone());
}
}
nodeCopy.symbolData = symbolData;
return(nodeCopy);
}