fis_lib_jsonrpc/lib/exception.dart

/// JSON-RPC exception
class JsonRpcException implements Exception {
  String? message;
  int? code;
  dynamic data;

  JsonRpcException({
    this.code,
    this.message,
    this.data,
  });

  @override
  String toString() {
    return 'JSON-RPC Exception: $code $message';
  }

  Map<String, dynamic> toJson() {
    var map = <String, dynamic>{'code': code, 'message': message};
    if (data != null) {
      map['data'] = data;
    }
    return map;
  }
}

/// JSON-RPC network exception
class JsonRpcNetworkException extends JsonRpcException {
  JsonRpcNetworkException(String message, [code = -32000, data])
      : super(message: message);
}

/// JSON-RPC Server Error
class JsonRpcServerError extends JsonRpcException {
  JsonRpcServerError(String message, [code = -32000, data])
      : super(message: message, code: code, data: data);
  JsonRpcServerError.fromJson(Map<String, dynamic> e) : super() {
    if (e.containsKey('message')) {
      message = e['message'];
    }
    if (e.containsKey('code')) {
      code = e['code'];
    }
    if (e.containsKey('data')) {
      data = e['data'];
    }
  }
}