danicoin/src/node_rpc_proxy/NodeErrors.h

// Copyright (c) 2012-2014, The CryptoNote developers, The Bytecoin developers
//
// This file is part of Bytecoin.
//
// Bytecoin is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Bytecoin is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with Bytecoin.  If not, see <http://www.gnu.org/licenses/>.

#pragma once

#include <string>
#include <system_error>

namespace cryptonote {
namespace error {

// custom error conditions enum type:
enum NodeErrorCodes {
  NOT_INITIALIZED = 1,
  ALREADY_INITIALIZED,
  NETWORK_ERROR,
  NODE_BUSY,
  INTERNAL_NODE_ERROR,
};

// custom category:
class NodeErrorCategory : public std::error_category {
public:
  static NodeErrorCategory INSTANCE;

  virtual const char* name() const throw() {
    return "NodeErrorCategory";
  }

  virtual std::error_condition default_error_condition(int ev) const throw() {
    return std::error_condition(ev, *this);
  }

  virtual std::string message(int ev) const {
    switch (ev) {
    case NOT_INITIALIZED:     return "Object was not initialized";
    case ALREADY_INITIALIZED: return "Object has been already initialized";
    case NETWORK_ERROR:       return "Network error";
    case NODE_BUSY:           return "Node is busy";
    case INTERNAL_NODE_ERROR: return "Internal node error";
    default:                  return "Unknown error";
    }
  }

private:
  NodeErrorCategory() {
  }
};

}
}
 
inline std::error_code make_error_code(cryptonote::error::NodeErrorCodes e) {
  return std::error_code(static_cast<int>(e), cryptonote::error::NodeErrorCategory::INSTANCE);
}