3 struct Expr get_scope_value(struct Expr scope, struct Expr name)
6 struct Expr value = assoc(name, scope.cons->car);
7 return nil_p(value) ? get_scope_value(scope.cons->cdr, name) : value;
13 struct Expr set_scope_value(Gc *gc, struct Expr scope, struct Expr name, struct Expr value)
16 if (!nil_p(assoc(name, scope.cons->car)) || nil_p(scope.cons->cdr)) {
18 CONS(gc, CONS(gc, name, value), scope.cons->car),
23 set_scope_value(gc, scope.cons->cdr, name, value));
27 CONS(gc, CONS(gc, name, value), NIL(gc)),