private CompiledNode CompileNode(UnCompiledNode <T> nodeIn, int tailLength)
{
long node;
if (DedupHash != null && (DoShareNonSingletonNodes || nodeIn.NumArcs <= 1) && tailLength <= ShareMaxTailLength)
{
if (nodeIn.NumArcs == 0)
{
node = Fst.AddNode(nodeIn);
}
else
{
node = DedupHash.Add(nodeIn);
}
}
else
{
node = Fst.AddNode(nodeIn);
}
Debug.Assert(node != -2);
nodeIn.Clear();
CompiledNode fn = new CompiledNode();
fn.Node = node;
return(fn);
}
internal override System.Linq.Expressions.Expression TryCompile(bool selfCompile, bool forAssign, Type expectedType, List <CodeNode> dynamicValues)
{
var ft = _left.TryCompile(false, false, null, dynamicValues);
var st = _right.TryCompile(false, false, null, dynamicValues);
if (ft == st) // null == null
{
return(null);
}
if (ft == null && st != null)
{
_right = new CompiledNode(_right, st, JITHelpers._items.GetValue(dynamicValues) as CodeNode[]);
return(null);
}
if (ft != null && st == null)
{
_left = new CompiledNode(_left, ft, JITHelpers._items.GetValue(dynamicValues) as CodeNode[]);
return(null);
}
if (ft.Type == st.Type)
{
return(System.Linq.Expressions.Expression.Add(ft, st));
}
return(null);
}
