include/boost/url/grammar/impl/tuple_rule.hpp
100.0% Lines (60/60)
97.7% Functions (253/259)
93.8% Branches (15/16)
include/boost/url/grammar/impl/tuple_rule.hpp
| Line | Branch | Hits | Source Code |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2022 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_IMPL_TUPLE_RULE_HPP | ||
| 12 | #define BOOST_URL_GRAMMAR_IMPL_TUPLE_RULE_HPP | ||
| 13 | |||
| 14 | #include <boost/url/grammar/parse.hpp> | ||
| 15 | #include <boost/mp11/integral.hpp> | ||
| 16 | #include <boost/mp11/list.hpp> | ||
| 17 | #include <boost/mp11/tuple.hpp> | ||
| 18 | #include <type_traits> | ||
| 19 | |||
| 20 | namespace boost { | ||
| 21 | namespace urls { | ||
| 22 | namespace grammar { | ||
| 23 | |||
| 24 | namespace detail { | ||
| 25 | |||
| 26 | // returns a tuple | ||
| 27 | template< | ||
| 28 | bool IsList, | ||
| 29 | class R0, class... Rn> | ||
| 30 | struct parse_sequence | ||
| 31 | { | ||
| 32 | using R = detail::tuple<R0, Rn...>; | ||
| 33 | |||
| 34 | using L = mp11::mp_list< | ||
| 35 | typename R0::value_type, | ||
| 36 | typename Rn::value_type...>; | ||
| 37 | |||
| 38 | using V = mp11::mp_remove< | ||
| 39 | std::tuple< | ||
| 40 | system::result<typename R0::value_type>, | ||
| 41 | system::result<typename Rn::value_type>...>, | ||
| 42 | system::result<void>>; | ||
| 43 | |||
| 44 | template<std::size_t I> | ||
| 45 | using is_void = std::is_same< | ||
| 46 | mp11::mp_at_c<L, I>, void>; | ||
| 47 | |||
| 48 | system::error_code ec; | ||
| 49 | R const& rn; | ||
| 50 | V vn; | ||
| 51 | |||
| 52 | BOOST_URL_CXX14_CONSTEXPR | ||
| 53 | explicit | ||
| 54 | 3945 | parse_sequence( | |
| 55 | R const& rn_) noexcept | ||
| 56 | 3945 | : rn(rn_) | |
| 57 | 3945 | , vn(mp11::mp_fill< | |
| 58 | 3945 | V, system::error_code>{}) | |
| 59 | { | ||
| 60 | 3945 | } | |
| 61 | |||
| 62 | BOOST_URL_CXX14_CONSTEXPR | ||
| 63 | void | ||
| 64 | 1255 | apply( | |
| 65 | char const*&, | ||
| 66 | char const*, | ||
| 67 | ...) const noexcept | ||
| 68 | { | ||
| 69 | 1255 | } | |
| 70 | |||
| 71 | // for system::result<void> | ||
| 72 | template< | ||
| 73 | std::size_t Ir, | ||
| 74 | std::size_t Iv> | ||
| 75 | BOOST_URL_CXX14_CONSTEXPR | ||
| 76 | void | ||
| 77 | 1694 | apply( | |
| 78 | char const*& it, | ||
| 79 | char const* end, | ||
| 80 | mp11::mp_size_t<Ir> const&, | ||
| 81 | mp11::mp_size_t<Iv> const&, | ||
| 82 | mp11::mp_true const&) | ||
| 83 | { | ||
| 84 | system::result<void> rv = | ||
| 85 |
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1694 | grammar::parse( |
| 86 | 1694 | it, end, get<Ir>(rn)); | |
| 87 |
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|
1694 | if( !rv ) |
| 88 | { | ||
| 89 | 419 | ec = rv.error(); | |
| 90 | 419 | return; | |
| 91 | } | ||
| 92 | 1275 | apply(it, end, | |
| 93 | mp11::mp_size_t<Ir+1>{}, | ||
| 94 | mp11::mp_size_t<Iv>{}); | ||
| 95 | } | ||
| 96 | |||
| 97 | template< | ||
| 98 | std::size_t Ir, | ||
| 99 | std::size_t Iv> | ||
| 100 | BOOST_URL_CXX14_CONSTEXPR | ||
| 101 | void | ||
| 102 | 5179 | apply( | |
| 103 | char const*& it, | ||
| 104 | char const* end, | ||
| 105 | mp11::mp_size_t<Ir> const&, | ||
| 106 | mp11::mp_size_t<Iv> const&, | ||
| 107 | mp11::mp_false const&) | ||
| 108 | { | ||
| 109 | 5179 | auto& rv = get<Iv>(vn); | |
| 110 |
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5179 | rv = grammar::parse( |
| 111 | 5179 | it, end, get<Ir>(rn)); | |
| 112 |
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|
5179 | if( !rv ) |
| 113 | { | ||
| 114 | 2271 | ec = rv.error(); | |
| 115 | 2271 | return; | |
| 116 | } | ||
| 117 | 2908 | apply(it, end, | |
| 118 | mp11::mp_size_t<Ir+1>{}, | ||
| 119 | mp11::mp_size_t<Iv+1>{}); | ||
| 120 | } | ||
| 121 | |||
| 122 | template< | ||
| 123 | std::size_t Ir = 0, | ||
| 124 | std::size_t Iv = 0> | ||
| 125 | BOOST_URL_CXX14_CONSTEXPR | ||
| 126 | typename std::enable_if< | ||
| 127 | Ir < 1 + sizeof...(Rn)>::type | ||
| 128 | 6873 | apply( | |
| 129 | char const*& it, | ||
| 130 | char const* end, | ||
| 131 | mp11::mp_size_t<Ir> const& ir = {}, | ||
| 132 | mp11::mp_size_t<Iv> const& iv = {} | ||
| 133 | ) noexcept | ||
| 134 | { | ||
| 135 | 6873 | apply(it, end, ir, iv, is_void<Ir>{}); | |
| 136 | 6873 | } | |
| 137 | |||
| 138 | struct deref | ||
| 139 | { | ||
| 140 | template<class R> | ||
| 141 | BOOST_URL_CXX14_CONSTEXPR | ||
| 142 | auto | ||
| 143 | 2777 | operator()(R const& r) const -> | |
| 144 | decltype(*r) | ||
| 145 | { | ||
| 146 | 2777 | return *r; | |
| 147 | } | ||
| 148 | }; | ||
| 149 | |||
| 150 | BOOST_URL_CXX14_CONSTEXPR | ||
| 151 | auto | ||
| 152 | 3945 | make_result() noexcept -> | |
| 153 | system::result<typename implementation_defined::tuple_rule_t< | ||
| 154 | R0, Rn...>::value_type> | ||
| 155 | { | ||
| 156 |
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3945 | if(ec.failed()) |
| 157 | 2690 | return ec; | |
| 158 | return mp11::tuple_transform( | ||
| 159 | 1255 | deref{}, vn); | |
| 160 | } | ||
| 161 | }; | ||
| 162 | |||
| 163 | // returns a value_type | ||
| 164 | template<class R0, class... Rn> | ||
| 165 | struct parse_sequence<false, R0, Rn...> | ||
| 166 | { | ||
| 167 | using R = detail::tuple<R0, Rn...>; | ||
| 168 | |||
| 169 | using L = mp11::mp_list< | ||
| 170 | typename R0::value_type, | ||
| 171 | typename Rn::value_type...>; | ||
| 172 | |||
| 173 | using V = mp11::mp_first< | ||
| 174 | mp11::mp_remove< | ||
| 175 | mp11::mp_list< | ||
| 176 | system::result<typename R0::value_type>, | ||
| 177 | system::result<typename Rn::value_type>...>, | ||
| 178 | system::result<void>>>; | ||
| 179 | |||
| 180 | template<std::size_t I> | ||
| 181 | using is_void = std::is_same< | ||
| 182 | mp11::mp_at_c<L, I>, void>; | ||
| 183 | |||
| 184 | R const& rn; | ||
| 185 | V v; | ||
| 186 | |||
| 187 | BOOST_URL_CXX14_CONSTEXPR | ||
| 188 | explicit | ||
| 189 | 8110 | parse_sequence( | |
| 190 | R const& rn_) noexcept | ||
| 191 | 8110 | : rn(rn_) | |
| 192 | 8110 | , v(system::error_code{}) | |
| 193 | { | ||
| 194 | 8110 | } | |
| 195 | |||
| 196 | BOOST_URL_CXX14_CONSTEXPR | ||
| 197 | void | ||
| 198 | 3752 | apply( | |
| 199 | char const*&, | ||
| 200 | char const*, | ||
| 201 | ...) const noexcept | ||
| 202 | { | ||
| 203 | 3752 | } | |
| 204 | |||
| 205 | // for system::result<void> | ||
| 206 | template< | ||
| 207 | std::size_t Ir, | ||
| 208 | std::size_t Iv> | ||
| 209 | BOOST_URL_CXX14_CONSTEXPR | ||
| 210 | void | ||
| 211 | 7125 | apply( | |
| 212 | char const*& it, | ||
| 213 | char const* end, | ||
| 214 | mp11::mp_size_t<Ir> const&, | ||
| 215 | mp11::mp_size_t<Iv> const&, | ||
| 216 | mp11::mp_true const&) | ||
| 217 | { | ||
| 218 | system::result<void> rv = | ||
| 219 |
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7125 | grammar::parse( |
| 220 | 7125 | it, end, get<Ir>(rn)); | |
| 221 |
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7125 | if( !rv ) |
| 222 | { | ||
| 223 | 3316 | v = rv.error(); | |
| 224 | 3316 | return; | |
| 225 | } | ||
| 226 | 3809 | apply(it, end, | |
| 227 | mp11::mp_size_t<Ir+1>{}, | ||
| 228 | mp11::mp_size_t<Iv>{}); | ||
| 229 | } | ||
| 230 | |||
| 231 | template< | ||
| 232 | std::size_t Ir, | ||
| 233 | std::size_t Iv> | ||
| 234 | BOOST_URL_CXX14_CONSTEXPR | ||
| 235 | void | ||
| 236 | 6682 | apply( | |
| 237 | char const*& it, | ||
| 238 | char const* end, | ||
| 239 | mp11::mp_size_t<Ir> const&, | ||
| 240 | mp11::mp_size_t<Iv> const&, | ||
| 241 | mp11::mp_false const&) | ||
| 242 | { | ||
| 243 |
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6682 | v = grammar::parse( |
| 244 | 6682 | it, end, get<Ir>(rn)); | |
| 245 |
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|
6682 | if( !v ) |
| 246 | 1042 | return; | |
| 247 | 5640 | apply(it, end, | |
| 248 | mp11::mp_size_t<Ir+1>{}, | ||
| 249 | mp11::mp_size_t<Iv+1>{}); | ||
| 250 | } | ||
| 251 | |||
| 252 | template< | ||
| 253 | std::size_t Ir = 0, | ||
| 254 | std::size_t Iv = 0> | ||
| 255 | BOOST_URL_CXX14_CONSTEXPR | ||
| 256 | typename std::enable_if< | ||
| 257 | Ir < 1 + sizeof...(Rn)>::type | ||
| 258 | 13807 | apply( | |
| 259 | char const*& it, | ||
| 260 | char const* end, | ||
| 261 | mp11::mp_size_t<Ir> const& ir = {}, | ||
| 262 | mp11::mp_size_t<Iv> const& iv = {} | ||
| 263 | ) noexcept | ||
| 264 | { | ||
| 265 | 13807 | apply(it, end, ir, iv, is_void<Ir>{}); | |
| 266 | 13807 | } | |
| 267 | |||
| 268 | BOOST_URL_CXX14_CONSTEXPR | ||
| 269 | V | ||
| 270 | 8110 | make_result() noexcept | |
| 271 | { | ||
| 272 | 8110 | return v; | |
| 273 | } | ||
| 274 | }; | ||
| 275 | |||
| 276 | } // detail | ||
| 277 | |||
| 278 | template< | ||
| 279 | class R0, | ||
| 280 | class... Rn> | ||
| 281 | BOOST_URL_CXX14_CONSTEXPR | ||
| 282 | auto | ||
| 283 | 12055 | implementation_defined::tuple_rule_t<R0, Rn...>:: | |
| 284 | parse( | ||
| 285 | char const*& it, | ||
| 286 | char const* end) const -> | ||
| 287 | system::result<value_type> | ||
| 288 | { | ||
| 289 | detail::parse_sequence< | ||
| 290 | 12055 | IsList, R0, Rn...> t(this->get()); | |
| 291 | 12055 | t.apply(it, end); | |
| 292 | 12055 | return t.make_result(); | |
| 293 | 767 | } | |
| 294 | |||
| 295 | } // grammar | ||
| 296 | } // urls | ||
| 297 | } // boost | ||
| 298 | |||
| 299 | #endif | ||
| 300 |