Function simple_function

src/include/minja/minja.hpp:2698–2724

};

static Value simple_function(const std::string & fn_name, const std::vector<std::string> & params, const std::function<Value(const std::shared_ptr<Context> &, Value & args)> & fn) {
  std::map<std::string, size_t> named_positions;
  for (size_t i = 0, n = params.size(); i < n; i++) named_positions[params[i]] = i;

  return Value::callable([=](const std::shared_ptr<Context> & context, ArgumentsValue & args) -> Value {
    auto args_obj = Value::object();
    std::vector<bool> provided_args(params.size());
    for (size_t i = 0, n = args.args.size(); i < n; i++) {
      auto & arg = args.args[i];
      if (i < params.size()) {
        args_obj.set(params[i], arg);
        provided_args[i] = true;
      } else {
        throw std::runtime_error("Too many positional params for " + fn_name);
      }
    }
    for (auto & [name, value] : args.kwargs) {
      auto named_pos_it = named_positions.find(name);
      if (named_pos_it == named_positions.end()) {
        throw std::runtime_error("Unknown argument " + name + " for function " + fn_name);
      }
      provided_args[named_pos_it->second] = true;
      args_obj.set(name, value);
    }
    return fn(context, args_obj);
  });
}

inline std::shared_ptr<Context> Context::builtins() {
  auto globals = Value::object();