custom_methods.hpp

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// Copyright (c) 2025 [caomengxuan666]
 
#pragma once
 
 
#include <cstdint>
#include <string>
#include <string_view>
 
#include "cxxmcp/core/result.hpp"
#include "cxxmcp/protocol/serialization.hpp"
#include "cxxmcp/protocol/types.hpp"
 
namespace mcp::protocol {
 
template <class Params, class Result>
struct CustomRequest {
  std::string method;
  Params params;
  RequestId id;
 
  template <class Serializer>
  JsonRpcRequest to_json_rpc(Serializer serializer) const {
    return make_request(method, id, serializer(params));
  }
 
  template <class Deserializer>
  core::Result<Result> parse_response(const JsonRpcResponse& response,
                                      Deserializer deserializer) const {
    if (response.has_error()) {
      return mcp::core::unexpected(
          core::Error{response.error->code, response.error->message,
                      response.error->data.value_or(Json::object())});
    }
    if (!response.has_result()) {
      return mcp::core::unexpected(
          core::Error{static_cast<int>(ErrorCode::InternalError),
                      "custom request response has neither result nor error",
                      {}});
    }
    return deserializer(*response.result);
  }
};
 
template <class Params>
struct CustomNotification {
  std::string method;
  Params params;
 
  template <class Serializer>
  JsonRpcNotification to_json_rpc(Serializer serializer) const {
    return make_notification(method, serializer(params));
  }
};
 
}  // namespace mcp::protocol