mirror of
https://github.com/rbock/sqlpp11.git
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131 lines
6.1 KiB
C++
131 lines
6.1 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_ALIAS_PROVIDER_H
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#define SQLPP11_ALIAS_PROVIDER_H
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#include <type_traits>
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#include <sqlpp11/char_sequence.h>
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#define SQLPP_ALIAS_PROVIDER(name) \
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struct name##_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[] = #name; \
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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 name; \
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T& operator()() \
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{ \
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return name; \
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} \
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const T& operator()() const \
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{ \
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return name; \
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} \
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}; \
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}; \
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}; \
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constexpr name##_t name = {};
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#define SQLPP_QUOTED_ALIAS_PROVIDER(name) \
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struct name##_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[] = "!" #name; \
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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 name; \
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T& operator()() \
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{ \
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return name; \
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} \
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const T& operator()() const \
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{ \
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return name; \
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} \
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}; \
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}; \
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}; \
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constexpr name##_t name = {};
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namespace sqlpp
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{
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template <typename T, typename Enable = void>
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struct is_alias_provider_t
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{
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static constexpr bool value = false;
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};
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template <typename T>
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struct is_alias_provider_t<
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T,
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typename std::enable_if<std::is_class<typename T::_alias_t::template _member_t<int>>::value, void>::type>
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{
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static constexpr bool value = true;
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};
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namespace alias
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{
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SQLPP_ALIAS_PROVIDER(a)
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SQLPP_ALIAS_PROVIDER(b)
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SQLPP_ALIAS_PROVIDER(c)
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SQLPP_ALIAS_PROVIDER(d)
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SQLPP_ALIAS_PROVIDER(e)
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SQLPP_ALIAS_PROVIDER(f)
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SQLPP_ALIAS_PROVIDER(g)
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SQLPP_ALIAS_PROVIDER(h)
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SQLPP_ALIAS_PROVIDER(i)
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SQLPP_ALIAS_PROVIDER(j)
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SQLPP_ALIAS_PROVIDER(k)
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SQLPP_ALIAS_PROVIDER(l)
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SQLPP_ALIAS_PROVIDER(m)
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SQLPP_ALIAS_PROVIDER(n)
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SQLPP_ALIAS_PROVIDER(o)
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SQLPP_ALIAS_PROVIDER(p)
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SQLPP_ALIAS_PROVIDER(q)
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SQLPP_ALIAS_PROVIDER(r)
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SQLPP_ALIAS_PROVIDER(s)
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SQLPP_ALIAS_PROVIDER(t)
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SQLPP_ALIAS_PROVIDER(u)
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SQLPP_ALIAS_PROVIDER(v)
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SQLPP_ALIAS_PROVIDER(w)
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SQLPP_ALIAS_PROVIDER(x)
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SQLPP_ALIAS_PROVIDER(y)
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SQLPP_ALIAS_PROVIDER(z)
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SQLPP_ALIAS_PROVIDER(left)
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SQLPP_ALIAS_PROVIDER(right)
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} // namespace alias
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} // namespace sqlpp
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#endif
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