| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com) | ||
| 3 | // Copyright (c) 2022 Alan de Freitas (alandefreitas@gmail.com) | ||
| 4 | // | ||
| 5 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 6 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 7 | // | ||
| 8 | // Official repository: https://github.com/boostorg/url | ||
| 9 | // | ||
| 10 | |||
| 11 | #ifndef BOOST_URL_GRAMMAR_DETAIL_CI_STRING_HPP | ||
| 12 | #define BOOST_URL_GRAMMAR_DETAIL_CI_STRING_HPP | ||
| 13 | |||
| 14 | #include <boost/core/detail/string_view.hpp> | ||
| 15 | #include <boost/assert.hpp> | ||
| 16 | #include <cstdint> | ||
| 17 | #include <iterator> | ||
| 18 | #include <type_traits> | ||
| 19 | |||
| 20 | namespace boost { | ||
| 21 | namespace urls { | ||
| 22 | namespace grammar { | ||
| 23 | namespace detail { | ||
| 24 | |||
| 25 | template<class T, class = void> | ||
| 26 | struct is_char_iter : std::false_type {}; | ||
| 27 | |||
| 28 | template<class T> | ||
| 29 | struct is_char_iter<T, void_t< | ||
| 30 | decltype(std::declval<char&>() = | ||
| 31 | *std::declval<T const&>()), | ||
| 32 | decltype(std::declval<T&>() = | ||
| 33 | ++std::declval<T&>()), | ||
| 34 | decltype(std::declval<bool&>() = | ||
| 35 | std::declval<T const&>() == | ||
| 36 | std::declval<T const&>()) | ||
| 37 | > > : std::integral_constant<bool, | ||
| 38 | std::is_copy_constructible<T>::value> | ||
| 39 | { | ||
| 40 | }; | ||
| 41 | |||
| 42 | template<class T, class = void> | ||
| 43 | struct is_char_range : std::false_type {}; | ||
| 44 | |||
| 45 | template<class T> | ||
| 46 | struct is_char_range<T, void_t< | ||
| 47 | decltype(std::declval<T const&>().begin()), | ||
| 48 | decltype(std::declval<T const&>().end()) | ||
| 49 | > > : std::integral_constant<bool, | ||
| 50 | is_char_iter<decltype( | ||
| 51 | std::declval<T const&>( | ||
| 52 | ).begin())>::value && | ||
| 53 | is_char_iter<decltype( | ||
| 54 | std::declval<T const&>( | ||
| 55 | ).end())>::value> | ||
| 56 | { | ||
| 57 | }; | ||
| 58 | |||
| 59 | template<class T> | ||
| 60 | struct type_id_impl | ||
| 61 | { | ||
| 62 | static | ||
| 63 | constexpr | ||
| 64 | char cid = 0; | ||
| 65 | }; | ||
| 66 | |||
| 67 | template<class T> | ||
| 68 | constexpr | ||
| 69 | char | ||
| 70 | type_id_impl<T>::cid; | ||
| 71 | |||
| 72 | template<class T> | ||
| 73 | constexpr | ||
| 74 | std::uintptr_t | ||
| 75 | 1512 | type_id() noexcept | |
| 76 | { | ||
| 77 | return std::uintptr_t( | ||
| 78 | 1512 | &type_id_impl<T>::cid); | |
| 79 | } | ||
| 80 | |||
| 81 | //------------------------------------------------ | ||
| 82 | |||
| 83 | constexpr | ||
| 84 | char | ||
| 85 | 21239 | to_lower(char c) noexcept | |
| 86 | { | ||
| 87 | return | ||
| 88 |
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20175 | (c >= 'A' && |
| 89 | c <= 'Z') | ||
| 90 | 478 | ? c + 'a' - 'A' | |
| 91 |
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41414 | : c; |
| 92 | } | ||
| 93 | |||
| 94 | constexpr | ||
| 95 | char | ||
| 96 | 187 | to_upper(char c) noexcept | |
| 97 | { | ||
| 98 | return | ||
| 99 |
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85 | (c >= 'a' && |
| 100 | c <= 'z') | ||
| 101 | 85 | ? c - ('a' - 'A') | |
| 102 |
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272 | : c; |
| 103 | } | ||
| 104 | |||
| 105 | //------------------------------------------------ | ||
| 106 | |||
| 107 | template<class S0, class S1> | ||
| 108 | auto | ||
| 109 | 252 | ci_is_equal( | |
| 110 | S0 const& s0, | ||
| 111 | S1 const& s1) -> | ||
| 112 | typename std::enable_if< | ||
| 113 | ! std::is_convertible< | ||
| 114 | S0, core::string_view>::value || | ||
| 115 | ! std::is_convertible< | ||
| 116 | S1, core::string_view>::value, | ||
| 117 | bool>::type | ||
| 118 | { | ||
| 119 | /* If you get a compile error here, it | ||
| 120 | means that a range you passed does | ||
| 121 | not meet the requirements stated | ||
| 122 | in the documentation. | ||
| 123 | */ | ||
| 124 | static_assert( | ||
| 125 | is_char_range<S0>::value, | ||
| 126 | "Type requirements not met"); | ||
| 127 | static_assert( | ||
| 128 | is_char_range<S1>::value, | ||
| 129 | "Type requirements not met"); | ||
| 130 | |||
| 131 | // Arguments are sorted by type to | ||
| 132 | // reduce the number of function | ||
| 133 | // template instantiations. This | ||
| 134 | // works because: | ||
| 135 | // | ||
| 136 | // ci_is_equal(s0,s1) == ci_is_equal(s1,s0) | ||
| 137 | // | ||
| 138 | 126 | BOOST_ASSERT( | |
| 139 | detail::type_id<S0>() <= | ||
| 140 | detail::type_id<S1>()); | ||
| 141 | |||
| 142 | 252 | auto it0 = s0.begin(); | |
| 143 | 252 | auto it1 = s1.begin(); | |
| 144 | 252 | auto const end0 = s0.end(); | |
| 145 | 252 | auto const end1 = s1.end(); | |
| 146 | for(;;) | ||
| 147 | { | ||
| 148 |
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352 | if(it0 == end0) |
| 149 | 64 | return it1 == end1; | |
| 150 |
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288 | if(it1 == end1) |
| 151 | ✗ | return false; | |
| 152 |
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576 | if( to_lower(*it0) != |
| 153 | 288 | to_lower(*it1)) | |
| 154 | 188 | return false; | |
| 155 | 100 | ++it0; | |
| 156 | 100 | ++it1; | |
| 157 | } | ||
| 158 | } | ||
| 159 | |||
| 160 | //------------------------------------------------ | ||
| 161 | |||
| 162 | BOOST_URL_DECL | ||
| 163 | bool | ||
| 164 | ci_is_equal( | ||
| 165 | core::string_view s0, | ||
| 166 | core::string_view s1) noexcept; | ||
| 167 | |||
| 168 | BOOST_URL_DECL | ||
| 169 | bool | ||
| 170 | ci_is_less( | ||
| 171 | core::string_view s0, | ||
| 172 | core::string_view s1) noexcept; | ||
| 173 | |||
| 174 | } // detail | ||
| 175 | } // grammar | ||
| 176 | } // urls | ||
| 177 | } // boost | ||
| 178 | |||
| 179 | #endif | ||
| 180 |