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Diffstat (limited to 'src/vpp-api/vom/enum_base.hpp')
-rw-r--r-- | src/vpp-api/vom/enum_base.hpp | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/vpp-api/vom/enum_base.hpp b/src/vpp-api/vom/enum_base.hpp new file mode 100644 index 00000000000..4184cebc986 --- /dev/null +++ b/src/vpp-api/vom/enum_base.hpp @@ -0,0 +1,105 @@ +/* + * 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 |