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71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
/*
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* Copyright (c) 2013-2016, Roland Bock
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SQLPP11_PARAMETER_LIST_H
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#define SQLPP11_PARAMETER_LIST_H
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#include <tuple>
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#include <sqlpp11/type_traits.h>
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#include <sqlpp11/wrong.h>
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#include <sqlpp11/detail/index_sequence.h>
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namespace sqlpp
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{
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template <typename T>
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struct parameter_list_t
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{
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static_assert(wrong_t<parameter_list_t>::value, "Template parameter for parameter_list_t has to be a type_vector");
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};
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template <typename... Parameter>
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struct parameter_list_t<detail::type_vector<Parameter...>> : public Parameter::_instance_t...
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{
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using _member_tuple_t = std::tuple<typename Parameter::_instance_t...>;
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using size = std::integral_constant<std::size_t, sizeof...(Parameter)>;
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parameter_list_t() = default;
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template <typename Target>
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void _bind(Target& target) const
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{
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_bind_impl(target, detail::make_index_sequence<size::value>{});
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}
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private:
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template <typename Target, size_t... Is>
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void _bind_impl(Target& target, const detail::index_sequence<Is...>& /*unused*/) const
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{
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using swallow = int[]; // see interpret_tuple.h
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(void)swallow{0, (std::tuple_element<Is, _member_tuple_t>::type::operator()()._bind(target, Is), 0)...};
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}
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};
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template <typename Exp>
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using make_parameter_list_t = parameter_list_t<parameters_of<Exp>>;
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} // namespace sqlpp
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#endif
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