unilink  0.4.3
A simple C++ library for unified async communication
error_codes.hpp
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1 /*
2  * Copyright 2025 Jinwoo Sung
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
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13  * See the License for the specific language governing permissions and
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15  */
16 
17 #pragma once
18 
19 #include <string>
20 
21 namespace unilink {
22 
26 enum class ErrorCode {
27  Success = 0,
28  Unknown,
29  InvalidConfiguration,
30  InternalError,
31  IoError,
32 
33  // Connection related
34  ConnectionRefused,
35  ConnectionReset,
36  ConnectionAborted,
37  TimedOut,
38  NotConnected,
39  AlreadyConnected,
40 
41  // Server related
42  PortInUse,
43  AccessDenied,
44 
45  // Lifecycle
46  Stopped,
47  StartFailed
48 };
49 
53 inline std::string to_string(ErrorCode code) {
54  switch (code) {
55  case ErrorCode::Success:
56  return "Success";
57  case ErrorCode::Unknown:
58  return "Unknown Error";
59  case ErrorCode::InvalidConfiguration:
60  return "Invalid Configuration";
61  case ErrorCode::InternalError:
62  return "Internal Error";
63  case ErrorCode::IoError:
64  return "I/O Error";
65  case ErrorCode::ConnectionRefused:
66  return "Connection Refused";
67  case ErrorCode::ConnectionReset:
68  return "Connection Reset";
69  case ErrorCode::ConnectionAborted:
70  return "Connection Aborted";
71  case ErrorCode::TimedOut:
72  return "Operation Timed Out";
73  case ErrorCode::NotConnected:
74  return "Not Connected";
75  case ErrorCode::AlreadyConnected:
76  return "Already Connected";
77  case ErrorCode::PortInUse:
78  return "Port Already In Use";
79  case ErrorCode::AccessDenied:
80  return "Access Denied";
81  case ErrorCode::Stopped:
82  return "Stopped";
83  case ErrorCode::StartFailed:
84  return "Failed to Start";
85  default:
86  return "Unknown Error Code";
87  }
88 }
89 
90 } // namespace unilink