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119 lines
3.6 KiB
C++
119 lines
3.6 KiB
C++
#pragma once
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/*
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* Copyright (c) 2013-2015, 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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#include <sqlpp11/type_traits.h>
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#include <sqlpp11/char_sequence.h>
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#include <sqlpp11/data_types/boolean.h>
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#include <sqlpp11/in_fwd.h>
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#include <sqlpp11/detail/type_set.h>
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namespace sqlpp
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{
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struct in_alias_t
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{
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struct _alias_t
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{
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static constexpr const char _literal[] = "in_";
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using _name_t = sqlpp::make_char_sequence<sizeof(_literal), _literal>;
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template <typename T>
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struct _member_t
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{
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T in;
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};
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};
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};
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template <typename Operand, typename... Args>
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struct in_t : public expression_operators<in_t<Operand, Args...>, boolean>,
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public alias_operators<in_t<Operand, Args...>>
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{
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using _traits = make_traits<boolean, tag::is_expression, tag::is_selectable>;
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using _nodes = detail::type_vector<Operand, Args...>;
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using _auto_alias_t = in_alias_t;
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in_t(Operand operand, Args... args) : _operand(operand), _args(args...)
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{
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}
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in_t(const in_t&) = default;
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in_t(in_t&&) = default;
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in_t& operator=(const in_t&) = default;
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in_t& operator=(in_t&&) = default;
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~in_t() = default;
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Operand _operand;
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std::tuple<Args...> _args;
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};
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template <typename Context, typename Operand, typename Arg, typename... Args>
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Context& serialize(const in_t<Operand, Arg, Args...>& t, Context& context)
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{
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serialize(t._operand, context);
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context << " IN(";
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if (sizeof...(Args) == 0)
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{
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serialize(std::get<0>(t._args), context);
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}
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else
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{
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interpret_tuple(t._args, ',', context);
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}
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context << ')';
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return context;
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}
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template <typename Context, typename Operand>
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Context& serialize(const in_t<Operand>&, Context& context)
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{
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serialize(boolean_operand{false}, context);
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return context;
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}
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template <typename Container>
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struct value_list_t;
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template <typename Context, typename Operand, typename Container>
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Context& serialize(const in_t<Operand, value_list_t<Container>>& t, Context& context)
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{
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const auto& value_list = std::get<0>(t._args);
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if (value_list._container.empty())
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{
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serialize(boolean_operand{false}, context);
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}
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else
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{
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serialize(t._operand, context);
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context << " IN(";
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serialize(value_list, context);
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context << ')';
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}
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return context;
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}
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} // namespace sqlpp
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