//delete a param_list
void param_list_delete(struct param_list *p){
if(!p) return;
param_list_delete(p->next);
type_delete(p->type);
free(p);
}
void param_list_delete(struct param_list *p) {
if (!p) return;
// delete from end of list
param_list_delete(p->next);
// free node
free(p->name);
type_delete(p->type);
free(p);
}
void param_list_add(ParamList **root,
const char *key, const char *value, int value_size)
{
ParamList *pl = (ParamList*)malloc(sizeof(ParamList));
int key_len = strlen(key);
param_list_delete(root, key);
pl->next = *root;
pl->key = malloc(key_len + 1);
memcpy(pl->key, key, key_len + 1);
pl->value = malloc(value_size);
memcpy(pl->value, value, value_size);
pl->value_size = value_size;
*root = pl;
}