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97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
/*
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* Copyright (c) 2013-2014, 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 SQLPP_ALIAS_PROVIDER_H
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#define SQLPP_ALIAS_PROVIDER_H
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#include <type_traits>
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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 _name_t\
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{\
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static constexpr const char* _get_name() { return #name; }\
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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()() { return name; }\
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const T& operator()() const { return name; }\
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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<T, typename std::enable_if<std::is_class<typename T::_name_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(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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}
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}
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#endif
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