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77 lines
2.6 KiB
C++
77 lines
2.6 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 <type_traits>
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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 Context>
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std::integral_constant<char, '"'> get_quote_left(const Context&);
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template <typename Context>
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std::integral_constant<char, '"'> get_quote_right(const Context&);
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template <char... Cs>
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struct char_sequence
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{
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template <typename Context>
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static const char* char_ptr()
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{
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static char s[] = {Cs..., '\0'};
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return s;
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}
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};
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template <char... Cs>
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struct char_sequence<'!', Cs...>
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{
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template <typename Context>
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static const char* char_ptr()
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{
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static char s[] = {decltype(get_quote_left(std::declval<Context>()))::value, Cs...,
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decltype(get_quote_right(std::declval<Context>()))::value, '\0'};
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return s;
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}
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};
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template <std::size_t N, const char* s, typename T>
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struct make_char_sequence_impl;
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template <std::size_t N, const char* s, std::size_t... i>
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struct make_char_sequence_impl<N, s, sqlpp::detail::index_sequence<i...>>
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{
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using type = char_sequence<s[i]...>;
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};
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template <std::size_t N, const char* Input>
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using make_char_sequence =
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typename make_char_sequence_impl<N, Input, sqlpp::detail::make_index_sequence<N - 1>>::type;
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} // namespace sqlpp
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