VPP Object Model (VOM)
The VOM is a C++ library for use by clients/agents of VPP for programming
state. It uses the binary APIs to do so. Various other common client side
functions are also provided. Please see om.hpp for a more detailed description.
Change-Id: Ib756bfe99817093815a9e26ccf464aa5583fc523
Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
Co-authored-by: Mohsin Kazmi <sykazmi@cisco.com>
diff --git a/src/vpp-api/vom/enum_base.hpp b/src/vpp-api/vom/enum_base.hpp
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+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __VOM_ENUM_H__
+#define __VOM_ENUM_H__
+
+#include <string>
+
+namespace VOM {
+/**
+ * A template base class for all enum types.
+ * This enum type exists to associate an enum value with a string for
+ * display/debug purposes.
+ * Concrete enum types use the CRTP. Derived classes thus inherit this
+ * base's function, but are not polymorphic.
+ */
+template <typename T>
+class enum_base
+{
+public:
+ /**
+ * convert to string format for debug purposes
+ */
+ const std::string& to_string() const { return (m_desc); }
+
+ /**
+ * Comparison operator
+ */
+ bool operator==(const enum_base& e) const { return (e.m_value == m_value); }
+
+ /**
+ * Assignment
+ */
+ enum_base& operator=(const enum_base& e)
+ {
+ m_value = e.m_value;
+ m_desc = e.m_desc;
+
+ return (*this);
+ }
+
+ /**
+ * Comparison operator
+ */
+ bool operator!=(const enum_base& e) const { return (e.m_value != m_value); }
+
+ /**
+ * integer conversion operator
+ */
+ constexpr operator int() const { return (m_value); }
+
+ /**
+ * Return the value of the enum - same as integer conversion
+ */
+ constexpr int value() const { return (m_value); }
+
+protected:
+ /**
+ * Constructor of an enum - takes value and string description
+ */
+ constexpr enum_base(int value, const std::string desc)
+ : m_value(value)
+ , m_desc(desc)
+ {
+ }
+
+ /**
+ * Constructor
+ */
+ virtual ~enum_base() {}
+
+private:
+ /**
+ * Integer value of the enum
+ */
+ int m_value;
+
+ /**
+ * String description
+ */
+ std::string m_desc;
+};
+};
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "mozilla")
+ * End:
+ */
+
+#endif