feat(tools): Move the error code to the Tools target

fairmq/Error.cxx

@@ -0,0 +1,39 @@
+/********************************************************************************
+ * Copyright (C) 2019-2021 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH  *
+ *                                                                              *
+ *              This software is distributed under the terms of the             *
+ *              GNU Lesser General Public Licence (LGPL) version 3,             *
+ *                  copied verbatim in the file "LICENSE"                       *
+ ********************************************************************************/
+
+#include "Error.h"
+
+namespace fair::mq {
+
+const char* ErrorCategory::name() const noexcept { return "fairmq"; }
+
+std::string ErrorCategory::message(int ev) const
+{
+    switch (static_cast<ErrorCode>(ev)) {
+        case ErrorCode::OperationInProgress:
+            return "async operation already in progress";
+        case ErrorCode::OperationTimeout:
+            return "async operation timed out";
+        case ErrorCode::OperationCanceled:
+            return "async operation canceled";
+        case ErrorCode::DeviceChangeStateFailed:
+            return "failed to change state of a fairmq device";
+        case ErrorCode::DeviceGetPropertiesFailed:
+            return "failed to get fairmq device properties";
+        case ErrorCode::DeviceSetPropertiesFailed:
+            return "failed to set fairmq device properties";
+        default:
+            return "(unrecognized error)";
+    }
+}
+
+const ErrorCategory errorCategory{};
+
+std::error_code MakeErrorCode(ErrorCode e) { return {static_cast<int>(e), errorCategory}; }
+
+}   // namespace fair::mq