+constant_t* constant_clone(constant_t*other)
+{
+ if(!other) return 0;
+ constant_t*c = malloc(sizeof(constant_t));
+ memcpy(c, other, sizeof(constant_t));
+ if(NS_TYPE(c->type)) {
+ c->ns = namespace_clone(other->ns);
+ } else if(c->type == CONSTANT_STRING) {
+ c->s = string_dup3(other->s);
+ }
+ return c;
+}