d6b8e32373
The goal is to allow for more evaluation at parse time, in general, to increase eval time performance. - Make AST_Node non-constructable except by derived classes. - Make data in AST_Node const (as much as possible). - Replace reflection "text = " with replace_child() (where the replacement must be with a new parse tree). - Evaluate floats, strings, ints, chars at parse time to avoid repeat evaluations (~10% speed up in loops in -O3)