private ExpressionNode FindFirst(Expression expr)
{
BFSIterator iter = expr.Root.GetBFSIterator();
while (iter.HasNext())
{
ExpressionNode current = (ExpressionNode)(iter.Next());
if (TryMatch(current, this.pattern))
{
return(current);
}
}
return(null);
}
public Expression(String displayName, ExpressionNode root)
{
this.DisplayName = displayName;
if (root == null)
{
return;
}
this.Root = root;
// Set containing expression reference in all children
if (root != null)
{
BFSIterator iter = root.GetBFSIterator();
while (iter.HasNext())
{
((ExpressionNode)(iter.Next())).Expr = this;
}
}
}
