state_name_to_param_name
param_name = state_name_to_param_name(sm->name, ret_str);
const char *state_name_to_param_name(const char *state_name, const char *param_name);
param_name = state_name_to_param_name(sm->name, return_str);
return state_name_to_param_name(name, sym->ident->name);
return state_name_to_param_name(state_name, sym_name);
param_name = state_name_to_param_name(sm->name, return_str);