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diff --git a/src/exceptions.h b/src/exceptions.h
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+++ b/src/exceptions.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            exceptions.h
+ *
+ *  Fri Jul  3 13:36:49 CEST 2020
+ *  Copyright 2020 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of Munia.
+ *
+ *  Munia is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Munia 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Munia; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#pragma once
+
+#include "message.h"
+#include "errorcodes.h"
+
+namespace Error
+{
+
+struct MissingParent
+	: public ErrorMessage
+{
+	MissingParent()
+	{
+		code = ErrorCode::MissingParent;
+		msg = "Parent node does not exist.";
+	}
+};
+
+struct NoSuchId
+	: public ErrorMessage
+{
+	NoSuchId()
+	{
+		code = ErrorCode::NoSuchId;
+		msg = "Node does not exist.";
+	}
+};
+
+struct IdAlreadyExists
+	: public ErrorMessage
+{
+	IdAlreadyExists()
+	{
+		code = ErrorCode::IdAlreadyExists;
+		msg = "Id already exists.";
+	}
+};
+
+struct ProtectedNode
+	: public ErrorMessage
+{
+	ProtectedNode()
+	{
+		code = ErrorCode::ProtectedNode;
+		msg = "Node is protected.";
+	}
+};
+
+struct NewParentIsSelf
+	: public ErrorMessage
+{
+	NewParentIsSelf()
+	{
+		code = ErrorCode::NewParentIsSelf;
+		msg = "New parent is the node itself.";
+	}
+};
+struct NewParentIsChildOfSelf
+	: public ErrorMessage
+{
+	NewParentIsChildOfSelf()
+	{
+		code = ErrorCode::NewParentIsChildOfSelf;
+		msg = "New parent is a child of node itself.";
+	}
+};
+
+struct System
+	: public ErrorMessage
+{
+	System(const char* message)
+	{
+		code = ErrorCode::System;
+		msg = "Unknown error occurred: ";
+		msg += message;
+	}
+};
+
+} // ::Error