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Diffstat (limited to 'include/CommonAPI/Struct.hpp')
| -rw-r--r-- | include/CommonAPI/Struct.hpp | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/include/CommonAPI/Struct.hpp b/include/CommonAPI/Struct.hpp new file mode 100644 index 0000000..c98b09e --- /dev/null +++ b/include/CommonAPI/Struct.hpp @@ -0,0 +1,174 @@ +// Copyright (C) 2014-2015 Bayerische Motoren Werke Aktiengesellschaft (BMW AG) +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this +// file, You can obtain one at http://mozilla.org/MPL/2.0/. + +#if !defined (COMMONAPI_INTERNAL_COMPILATION) +#error "Only <CommonAPI/CommonAPI.h> can be included directly, this file may disappear or change contents." +#endif + +#ifndef COMMONAPI_STRUCT_HPP_ +#define COMMONAPI_STRUCT_HPP_ + +#include <iostream> +#include <tuple> + +namespace CommonAPI { + +typedef uint32_t Serial; + +template<class _Derived> +class InputStream; + +template<class _Derived> +class OutputStream; + +template<class _Derived> +class TypeOutputStream; + +template<int, class, class, class> +struct StructReader; + +template< + int _Index, class _Input, + template<class...> class _V, class... _Values, + template<class...> class _D, class... _Depls> +struct StructReader<_Index, _Input, _V<_Values...>, _D<_Depls...>> { + void operator()(InputStream<_Input> &_input, + _V<_Values...> &_values, + const _D<_Depls...> *_depls) { + StructReader<_Index-1, _Input, _V<_Values...>, _D<_Depls...>>{}(_input, _values, _depls); + _input.template readValue<>(std::get<_Index>(_values.values_), + (_depls ? std::get<_Index>(_depls->values_) : nullptr)); + } +}; + +template< + int _Index, class _Input, + template<class...> class _V, class... _Values, + class _D> +struct StructReader<_Index, _Input, _V<_Values...>, _D> { + void operator()(InputStream<_Input> &_input, + _V<_Values...> &_values, + const _D *_depls) { + StructReader<_Index-1, _Input, _V<_Values...>, _D>{}(_input, _values, _depls); + _input.template readValue<_D>(std::get<_Index>(_values.values_)); + } +}; + +template<class _Input, + template<class...> class _V, class... _Values, + template<class...> class _D, class... _Depls> +struct StructReader<0, _Input, _V<_Values...>, _D<_Depls...>> { + void operator()(InputStream<_Input> &_input, + _V<_Values...> &_values, + const _D<_Depls...> *_depls) { + _input.template readValue<>(std::get<0>(_values.values_), + (_depls ? std::get<0>(_depls->values_) : nullptr)); + } +}; + +template<class _Input, + template<class...> class _V, class... _Values, + class _D> +struct StructReader<0, _Input, _V<_Values...>, _D> { + void operator()(InputStream<_Input> &_input, + _V<_Values...> &_values, + const _D *_depls) { + _input.template readValue<_D>(std::get<0>(_values.values_)); + } +}; + + +template< int, class, class, class > +struct StructWriter; + +template< + int _Index, class _Output, + template<class ...> class _V, class... _Values, + template <class...> class _D, class... _Depls> +struct StructWriter<_Index, _Output, _V<_Values...>, _D<_Depls...>> { + void operator()(OutputStream<_Output> &_output, + const _V<_Values...> &_values, + const _D<_Depls...> *_depls) { + StructWriter<_Index-1, _Output, _V<_Values...>, _D<_Depls...>>{}(_output, _values, _depls); + _output.template writeValue<>(std::get<_Index>(_values.values_), + (_depls ? std::get<_Index>(_depls->values_) : nullptr)); + } +}; + +template< + int _Index, class _Output, + template<class...> class _V, class... _Values, + class _D> +struct StructWriter<_Index, _Output, _V<_Values...>, _D> { + void operator()(OutputStream<_Output> &_output, + const _V<_Values...> &_values, + const _D *_depls) { + StructWriter<_Index-1, _Output, _V<_Values...>, _D>{}(_output, _values, _depls); + _output.template writeValue<_D>(std::get<_Index>(_values.values_)); + } +}; + +template<class _Output, + template<class...> class _V, class... _Values, + template<class...> class _D, class... _Depls> +struct StructWriter<0, _Output, _V<_Values...>, _D<_Depls...>> { + void operator()(OutputStream<_Output> &_output, + const _V<_Values...> &_values, + const _D<_Depls...> *_depls) { + _output.template writeValue<>(std::get<0>(_values.values_), + (_depls ? std::get<0>(_depls->values_) : nullptr)); + } +}; + +template<class _Output, + template<class...> class _V, class... _Values, + class _D> +struct StructWriter<0, _Output, _V<_Values...>, _D> { + void operator()(OutputStream<_Output> &_output, + const _V<_Values...> &_values, + const _D *_depls) { + _output.template writeValue<_D>(std::get<0>(_values.values_)); + } +}; + +template<int, class, class> +struct StructTypeWriter; + +template<int _Index, class _TypeOutput, + template<class...> class _V, class... _Values> +struct StructTypeWriter<_Index, _TypeOutput, _V<_Values...>> { + void operator()(TypeOutputStream<_TypeOutput> &_output, + const _V<_Values...> &_values) { + StructTypeWriter<_Index-1, _TypeOutput, _V<_Values...>>{}(_output, _values); + _output.template writeType(std::get<_Index>(_values.values_)); + } +}; + +template<class _TypeOutput, + template<class...> class _V, class... _Values> +struct StructTypeWriter<0, _TypeOutput, _V<_Values...>> { + void operator()(TypeOutputStream<_TypeOutput> &_output, + const _V<_Values...> &_values) { + _output.template writeType(std::get<0>(_values.values_)); + } +}; + +// Structures are mapped to a (generated) struct which inherits from CommonAPI::Struct. +// CommonAPI::Struct holds the structured data in a tuple. The generated class provides +// getter- and setter-methods for the structure members. +template<typename... _Types> +struct Struct { + std::tuple<_Types...> values_; +}; + +// Polymorphic structs are mapped to an interface that is derived from the base class +// PolymorphicStruct and contain their parameter in a Struct. +struct PolymorphicStruct { + virtual const Serial getSerial() const = 0; +}; + +} // namespace CommonAPI + +#endif // COMMONAPI_STRUCT_HPP_ |