include/boost/url/grammar/detail/charset.hpp
100.0% Lines (48/48)
100.0% Functions (28/28)
94.4% Branches (34/36)
include/boost/url/grammar/detail/charset.hpp
| Line | Branch | Hits | Source Code |
|---|---|---|---|
| 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_CHARSET_HPP | ||
| 12 | #define BOOST_URL_GRAMMAR_DETAIL_CHARSET_HPP | ||
| 13 | |||
| 14 | #include <boost/url/detail/config.hpp> | ||
| 15 | #include <boost/core/bit.hpp> | ||
| 16 | #include <type_traits> | ||
| 17 | |||
| 18 | #ifdef BOOST_URL_USE_SSE2 | ||
| 19 | # include <emmintrin.h> | ||
| 20 | # include <xmmintrin.h> | ||
| 21 | # ifdef _MSC_VER | ||
| 22 | # include <intrin.h> | ||
| 23 | # endif | ||
| 24 | #endif | ||
| 25 | |||
| 26 | #ifdef _MSC_VER | ||
| 27 | #pragma warning(push) | ||
| 28 | #pragma warning(disable: 4127) // conditional expression is constant | ||
| 29 | #endif | ||
| 30 | |||
| 31 | namespace boost { | ||
| 32 | namespace urls { | ||
| 33 | namespace grammar { | ||
| 34 | namespace detail { | ||
| 35 | |||
| 36 | template<class T, class = void> | ||
| 37 | struct has_find_if : std::false_type {}; | ||
| 38 | |||
| 39 | template<class T> | ||
| 40 | struct has_find_if<T, void_t< | ||
| 41 | decltype( | ||
| 42 | std::declval<char const*&>() = | ||
| 43 | std::declval<T const&>().find_if( | ||
| 44 | std::declval<char const*>(), | ||
| 45 | std::declval<char const*>()) | ||
| 46 | )>> : std::true_type | ||
| 47 | { | ||
| 48 | }; | ||
| 49 | |||
| 50 | template<class T, class = void> | ||
| 51 | struct has_find_if_not : std::false_type {}; | ||
| 52 | |||
| 53 | template<class T> | ||
| 54 | struct has_find_if_not<T, void_t< | ||
| 55 | decltype( | ||
| 56 | std::declval<char const*&>() = | ||
| 57 | std::declval<T const&>().find_if_not( | ||
| 58 | std::declval<char const*>(), | ||
| 59 | std::declval<char const*>()) | ||
| 60 | )>> : std::true_type | ||
| 61 | { | ||
| 62 | }; | ||
| 63 | |||
| 64 | template<class Pred> | ||
| 65 | BOOST_URL_CXX14_CONSTEXPR | ||
| 66 | char const* | ||
| 67 | 1 | find_if( | |
| 68 | char const* first, | ||
| 69 | char const* const last, | ||
| 70 | Pred const& pred, | ||
| 71 | std::false_type) noexcept | ||
| 72 | { | ||
| 73 |
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9 | while(first != last) |
| 74 | { | ||
| 75 |
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9 | if(pred(*first)) |
| 76 | 1 | break; | |
| 77 | 8 | ++first; | |
| 78 | } | ||
| 79 | 1 | return first; | |
| 80 | } | ||
| 81 | |||
| 82 | template<class Pred> | ||
| 83 | BOOST_URL_CXX14_CONSTEXPR | ||
| 84 | char const* | ||
| 85 | 2883 | find_if( | |
| 86 | char const* first, | ||
| 87 | char const* const last, | ||
| 88 | Pred const& pred, | ||
| 89 | std::true_type) noexcept | ||
| 90 | { | ||
| 91 | #if (__cplusplus >= 202002L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L) | ||
| 92 | if (__builtin_is_constant_evaluated()) | ||
| 93 | return find_if(first, last, pred, | ||
| 94 | std::false_type{}); | ||
| 95 | #endif | ||
| 96 | 2883 | return pred.find_if( | |
| 97 | 2883 | first, last); | |
| 98 | } | ||
| 99 | |||
| 100 | template<class Pred> | ||
| 101 | BOOST_URL_CXX14_CONSTEXPR | ||
| 102 | char const* | ||
| 103 | 1 | find_if_not( | |
| 104 | char const* first, | ||
| 105 | char const* const last, | ||
| 106 | Pred const& pred, | ||
| 107 | std::false_type) noexcept | ||
| 108 | { | ||
| 109 |
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4 | while(first != last) |
| 110 | { | ||
| 111 |
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4 | if(! pred(*first)) |
| 112 | 1 | break; | |
| 113 | 3 | ++first; | |
| 114 | } | ||
| 115 | 1 | return first; | |
| 116 | } | ||
| 117 | |||
| 118 | template<class Pred> | ||
| 119 | BOOST_URL_CXX14_CONSTEXPR | ||
| 120 | char const* | ||
| 121 | 19028 | find_if_not( | |
| 122 | char const* first, | ||
| 123 | char const* const last, | ||
| 124 | Pred const& pred, | ||
| 125 | std::true_type) noexcept | ||
| 126 | { | ||
| 127 | #if (__cplusplus >= 202002L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L) | ||
| 128 | if (__builtin_is_constant_evaluated()) | ||
| 129 | return find_if_not(first, last, pred, | ||
| 130 | std::false_type{}); | ||
| 131 | #endif | ||
| 132 | 19028 | return pred.find_if_not( | |
| 133 | 19028 | first, last); | |
| 134 | } | ||
| 135 | |||
| 136 | #ifdef BOOST_URL_USE_SSE2 | ||
| 137 | |||
| 138 | // by Peter Dimov | ||
| 139 | template<class Pred> | ||
| 140 | char const* | ||
| 141 | 2627 | find_if_pred( | |
| 142 | Pred const& pred, | ||
| 143 | char const* first, | ||
| 144 | char const* last ) noexcept | ||
| 145 | { | ||
| 146 |
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2936 | while( last - first >= 16 ) |
| 147 | { | ||
| 148 | 642 | unsigned char r[ 16 ] = {}; | |
| 149 |
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10914 | for( int i = 0; i < 16; ++i ) |
| 150 |
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10272 | r[ i ] = pred( first[ i ] )? 0xFF: 0x00; |
| 151 | 642 | __m128i r2 = _mm_loadu_si128( (__m128i const*)r ); | |
| 152 | 642 | unsigned r3 = _mm_movemask_epi8( r2 ); | |
| 153 |
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642 | if( r3 ) |
| 154 | 333 | return first + boost::core::countr_zero( r3 ); | |
| 155 | 309 | first += 16; | |
| 156 | } | ||
| 157 | 2294 | while( | |
| 158 |
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8452 | first != last && |
| 159 |
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3323 | ! pred(*first)) |
| 160 | { | ||
| 161 | 2835 | ++first; | |
| 162 | } | ||
| 163 | 2294 | return first; | |
| 164 | } | ||
| 165 | |||
| 166 | // by Peter Dimov | ||
| 167 | template<class Pred> | ||
| 168 | char const* | ||
| 169 | 16198 | find_if_not_pred( | |
| 170 | Pred const& pred, | ||
| 171 | char const* first, | ||
| 172 | char const* last ) noexcept | ||
| 173 | { | ||
| 174 |
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16601 | while( last - first >= 16 ) |
| 175 | { | ||
| 176 | 4367 | unsigned char r[ 16 ] = {}; | |
| 177 |
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74239 | for( int i = 0; i < 16; ++i ) |
| 178 |
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69872 | r[ i ] = pred( first[ i ] )? 0x00: 0xFF; |
| 179 | 4367 | __m128i r2 = _mm_loadu_si128( (__m128i const*)r ); | |
| 180 | 4367 | unsigned r3 = _mm_movemask_epi8( r2 ); | |
| 181 |
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4367 | if( r3 ) |
| 182 | 3964 | return first + boost::core::countr_zero( r3 ); | |
| 183 | 403 | first += 16; | |
| 184 | } | ||
| 185 | 12234 | while( | |
| 186 |
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83583 | first != last && |
| 187 | 39991 | pred(*first)) | |
| 188 | { | ||
| 189 | 31358 | ++first; | |
| 190 | } | ||
| 191 | 12234 | return first; | |
| 192 | } | ||
| 193 | |||
| 194 | #endif | ||
| 195 | |||
| 196 | } // detail | ||
| 197 | } // grammar | ||
| 198 | } // urls | ||
| 199 | } // boost | ||
| 200 | |||
| 201 | #ifdef _MSC_VER | ||
| 202 | #pragma warning(pop) | ||
| 203 | #endif | ||
| 204 | |||
| 205 | #endif | ||
| 206 |