| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2024 Dmitry Arkhipov (grisumbras@yandex.ru) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/boostorg/json | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_JSON_IMPL_SERIALIZER_HPP | ||
| 11 | #define BOOST_JSON_IMPL_SERIALIZER_HPP | ||
| 12 | |||
| 13 | #include <boost/describe/enum_to_string.hpp> | ||
| 14 | #include <boost/json/conversion.hpp> | ||
| 15 | #include <cstddef> | ||
| 16 | |||
| 17 | namespace boost { | ||
| 18 | namespace json { | ||
| 19 | namespace detail { | ||
| 20 | |||
| 21 | enum class writer::state : char | ||
| 22 | { | ||
| 23 | str1, str2, str3, esc1, utf1, | ||
| 24 | utf2, utf3, utf4, utf5, | ||
| 25 | lit, | ||
| 26 | arr1, arr2, arr3, arr4, | ||
| 27 | obj1, obj2, obj3, obj4, obj5, obj6 | ||
| 28 | }; | ||
| 29 | |||
| 30 | bool | ||
| 31 | 11258 | writer:: | |
| 32 | suspend(state st) | ||
| 33 | { | ||
| 34 | 11258 | st_.push(st); | |
| 35 | 11257 | return false; | |
| 36 | } | ||
| 37 | |||
| 38 | template<class U, class T> | ||
| 39 | bool | ||
| 40 | 23750 | writer:: | |
| 41 | suspend(state st, U u, T const* pt) | ||
| 42 | { | ||
| 43 | 23750 | st_.push(pt); | |
| 44 | 23748 | st_.push(u); | |
| 45 | 23748 | st_.push(st); | |
| 46 | 23748 | return false; | |
| 47 | } | ||
| 48 | |||
| 49 | template<class T, bool StackEmpty> | ||
| 50 | bool | ||
| 51 | write_impl(writer& w, stream& ss); | ||
| 52 | |||
| 53 | template<class T, bool StackEmpty> | ||
| 54 | BOOST_FORCEINLINE | ||
| 55 | bool | ||
| 56 | write_impl(null_like_conversion_tag, writer& w, stream& ss) | ||
| 57 | { | ||
| 58 | #if defined(_MSC_VER) | ||
| 59 | # pragma warning( push ) | ||
| 60 | # pragma warning( disable : 4127 ) | ||
| 61 | #endif | ||
| 62 |
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14 | if( StackEmpty || w.st_.empty() ) |
| 63 | 20 | return write_null(w, ss); | |
| 64 | #if defined(_MSC_VER) | ||
| 65 | # pragma warning( pop ) | ||
| 66 | #endif | ||
| 67 | 14 | return resume_buffer(w, ss); | |
| 68 | } | ||
| 69 | |||
| 70 | template<class T, bool StackEmpty> | ||
| 71 | BOOST_FORCEINLINE | ||
| 72 | bool | ||
| 73 | write_impl(bool_conversion_tag, writer& w, stream& ss) | ||
| 74 | { | ||
| 75 | ✗ | BOOST_ASSERT( w.p_ ); | |
| 76 | 97 | auto const t = *reinterpret_cast<T const*>(w.p_); | |
| 77 | |||
| 78 | #if defined(_MSC_VER) | ||
| 79 | # pragma warning( push ) | ||
| 80 | # pragma warning( disable : 4127 ) | ||
| 81 | #endif | ||
| 82 |
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61 | if( StackEmpty || w.st_.empty() ) |
| 83 | #if defined(_MSC_VER) | ||
| 84 | # pragma warning( pop ) | ||
| 85 | #endif | ||
| 86 | { | ||
| 87 |
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67 | if( t ) |
| 88 | 58 | return write_true(w, ss); | |
| 89 | else | ||
| 90 | 9 | return write_false(w, ss); | |
| 91 | } | ||
| 92 | |||
| 93 | 30 | return resume_buffer(w, ss); | |
| 94 | } | ||
| 95 | |||
| 96 | template<class T, bool StackEmpty> | ||
| 97 | BOOST_FORCEINLINE | ||
| 98 | bool | ||
| 99 | write_impl(integral_conversion_tag, writer& w, stream& ss0) | ||
| 100 | { | ||
| 101 | #if defined(_MSC_VER) | ||
| 102 | # pragma warning( push ) | ||
| 103 | # pragma warning( disable : 4127 ) | ||
| 104 | #endif | ||
| 105 |
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200 | if( StackEmpty || w.st_.empty() ) |
| 106 | #if defined(_MSC_VER) | ||
| 107 | # pragma warning( pop ) | ||
| 108 | #endif | ||
| 109 | { | ||
| 110 | 6 | auto const& t = *reinterpret_cast<T const*>(w.p_); | |
| 111 | |||
| 112 | #if defined(__clang__) | ||
| 113 | # pragma clang diagnostic push | ||
| 114 | # pragma clang diagnostic ignored "-Wsign-compare" | ||
| 115 | #elif defined(__GNUC__) | ||
| 116 | # pragma GCC diagnostic push | ||
| 117 | # pragma GCC diagnostic ignored "-Wsign-compare" | ||
| 118 | #elif defined(_MSC_VER) | ||
| 119 | # pragma warning( push ) | ||
| 120 | # pragma warning( disable : 4018 ) | ||
| 121 | # pragma warning( disable : 4127 ) | ||
| 122 | #endif | ||
| 123 | |||
| 124 |
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134 | if( t < 0 ) |
| 125 | { | ||
| 126 | // T is obviously signed, so this comparison is safe | ||
| 127 |
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6 | if( t >= (std::numeric_limits<std::int64_t>::min)() ) |
| 128 | { | ||
| 129 | 6 | std::int64_t i = t; | |
| 130 | 6 | return write_int64(w, ss0, i); | |
| 131 | } | ||
| 132 | } | ||
| 133 |
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334 | else if( t <= (std::numeric_limits<std::uint64_t>::max)() ) |
| 134 | { | ||
| 135 | 334 | std::uint64_t u = t; | |
| 136 | 334 | return write_uint64(w, ss0, u); | |
| 137 | } | ||
| 138 | #if defined(__clang__) | ||
| 139 | # pragma clang diagnostic pop | ||
| 140 | #elif defined(__GNUC__) | ||
| 141 | # pragma GCC diagnostic pop | ||
| 142 | #elif defined(_MSC_VER) | ||
| 143 | # pragma warning( pop ) | ||
| 144 | #endif | ||
| 145 | |||
| 146 | #if defined(_MSC_VER) | ||
| 147 | # pragma warning( push ) | ||
| 148 | # pragma warning( disable : 4244 ) | ||
| 149 | #endif | ||
| 150 | ✗ | double d = t; | |
| 151 | ✗ | return write_double(w, ss0, d); | |
| 152 | #if defined(_MSC_VER) | ||
| 153 | # pragma warning( pop ) | ||
| 154 | #endif | ||
| 155 | } | ||
| 156 | |||
| 157 | 66 | return resume_buffer(w, ss0); | |
| 158 | } | ||
| 159 | |||
| 160 | template<class T, bool StackEmpty> | ||
| 161 | BOOST_FORCEINLINE | ||
| 162 | bool | ||
| 163 | write_impl(floating_point_conversion_tag, writer& w, stream& ss0) | ||
| 164 | { | ||
| 165 | #if defined(_MSC_VER) | ||
| 166 | # pragma warning( push ) | ||
| 167 | # pragma warning( disable : 4127 ) | ||
| 168 | #endif | ||
| 169 |
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10 | if( StackEmpty || w.st_.empty() ) |
| 170 | #if defined(_MSC_VER) | ||
| 171 | # pragma warning( pop ) | ||
| 172 | #endif | ||
| 173 | { | ||
| 174 | 10 | double d = *reinterpret_cast<T const*>(w.p_); | |
| 175 | 10 | return write_double(w, ss0, d); | |
| 176 | } | ||
| 177 | |||
| 178 | 10 | return resume_buffer(w, ss0); | |
| 179 | } | ||
| 180 | |||
| 181 | template<class T, bool StackEmpty> | ||
| 182 | BOOST_FORCEINLINE | ||
| 183 | bool | ||
| 184 | write_impl(string_like_conversion_tag, writer& w, stream& ss0) | ||
| 185 | { | ||
| 186 | #if defined(_MSC_VER) | ||
| 187 | # pragma warning( push ) | ||
| 188 | # pragma warning( disable : 4127 ) | ||
| 189 | #endif | ||
| 190 |
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112 | if( StackEmpty || w.st_.empty() ) |
| 191 | #if defined(_MSC_VER) | ||
| 192 | # pragma warning( pop ) | ||
| 193 | #endif | ||
| 194 | { | ||
| 195 | ✗ | string_view const sv = *reinterpret_cast<T const*>(w.p_); | |
| 196 | 91 | w.cs0_ = { sv.data(), sv.size() }; | |
| 197 |
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91 | return write_string(w, ss0); |
| 198 | } | ||
| 199 | |||
| 200 | 112 | return resume_string(w, ss0); | |
| 201 | } | ||
| 202 | |||
| 203 | template<class T, bool StackEmpty> | ||
| 204 | BOOST_FORCEINLINE | ||
| 205 | bool | ||
| 206 | write_impl(sequence_conversion_tag, writer& w, stream& ss0) | ||
| 207 | { | ||
| 208 | using It = iterator_type<T const>; | ||
| 209 | using Elem = value_type<T>; | ||
| 210 | |||
| 211 | T const* pt; | ||
| 212 | 6078 | local_stream ss(ss0); | |
| 213 | 37 | It it; | |
| 214 | 17 | It end; | |
| 215 | #if defined(_MSC_VER) | ||
| 216 | # pragma warning( push ) | ||
| 217 | # pragma warning( disable : 4127 ) | ||
| 218 | #endif | ||
| 219 |
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2656 | if(StackEmpty || w.st_.empty()) |
| 220 | { | ||
| 221 | #if defined(_MSC_VER) | ||
| 222 | # pragma warning( pop ) | ||
| 223 | #endif | ||
| 224 |
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3422 | BOOST_ASSERT( w.p_ ); |
| 225 | 3422 | pt = reinterpret_cast<T const*>(w.p_); | |
| 226 | 3422 | it = std::begin(*pt); | |
| 227 | 6844 | end = std::end(*pt); | |
| 228 | } | ||
| 229 | else | ||
| 230 | { | ||
| 231 | writer::state st; | ||
| 232 |
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2656 | w.st_.pop(st); |
| 233 |
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2656 | w.st_.pop(it); |
| 234 |
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2656 | w.st_.pop(pt); |
| 235 | 2656 | end = std::end(*pt); | |
| 236 |
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2656 | switch(st) |
| 237 | { | ||
| 238 | 70 | default: | |
| 239 | 70 | case writer::state::arr1: goto do_arr1; | |
| 240 | 2314 | case writer::state::arr2: goto do_arr2; | |
| 241 | 40 | case writer::state::arr3: goto do_arr3; | |
| 242 | 232 | case writer::state::arr4: goto do_arr4; | |
| 243 | break; | ||
| 244 | } | ||
| 245 | } | ||
| 246 | 3492 | do_arr1: | |
| 247 |
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3492 | if(BOOST_JSON_LIKELY(ss)) |
| 248 | 3422 | ss.append('['); | |
| 249 | else | ||
| 250 |
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70 | return w.suspend(writer::state::arr1, it, pt); |
| 251 |
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3422 | if(it == end) |
| 252 | 507 | goto do_arr4; | |
| 253 | for(;;) | ||
| 254 | { | ||
| 255 | 4064 | w.p_ = std::addressof(*it); | |
| 256 | 6378 | do_arr2: | |
| 257 |
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6378 | if( !write_impl<Elem, StackEmpty>(w, ss) ) |
| 258 |
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2315 | return w.suspend(writer::state::arr2, it, pt); |
| 259 |
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4063 | if(BOOST_JSON_UNLIKELY( ++it == end )) |
| 260 | 2914 | break; | |
| 261 | 1149 | do_arr3: | |
| 262 |
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1189 | if(BOOST_JSON_LIKELY(ss)) |
| 263 | 1149 | ss.append(','); | |
| 264 | else | ||
| 265 |
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40 | return w.suspend(writer::state::arr3, it, pt); |
| 266 | } | ||
| 267 | 3653 | do_arr4: | |
| 268 |
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3653 | if(BOOST_JSON_LIKELY(ss)) |
| 269 | 3421 | ss.append(']'); | |
| 270 | else | ||
| 271 |
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232 | return w.suspend(writer::state::arr4, it, pt); |
| 272 | 3421 | return true; | |
| 273 | 6078 | } | |
| 274 | |||
| 275 | template<class T, bool StackEmpty> | ||
| 276 | BOOST_FORCEINLINE | ||
| 277 | bool | ||
| 278 | write_impl(map_like_conversion_tag, writer& w, stream& ss0) | ||
| 279 | { | ||
| 280 | using It = iterator_type<T const>; | ||
| 281 | using Mapped = mapped_type<T>; | ||
| 282 | |||
| 283 | T const* pt; | ||
| 284 | 27290 | local_stream ss(ss0); | |
| 285 | 96 | It it; | |
| 286 | 96 | It end; | |
| 287 | #if defined(_MSC_VER) | ||
| 288 | # pragma warning( push ) | ||
| 289 | # pragma warning( disable : 4127 ) | ||
| 290 | #endif | ||
| 291 |
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9120 | if(StackEmpty || w.st_.empty()) |
| 292 | #if defined(_MSC_VER) | ||
| 293 | # pragma warning( pop ) | ||
| 294 | #endif | ||
| 295 | { | ||
| 296 |
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18170 | BOOST_ASSERT( w.p_ ); |
| 297 | 18170 | pt = reinterpret_cast<T const*>(w.p_); | |
| 298 | 18170 | it = std::begin(*pt); | |
| 299 | 36340 | end = std::end(*pt); | |
| 300 | } | ||
| 301 | else | ||
| 302 | { | ||
| 303 | writer::state st; | ||
| 304 |
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9120 | w.st_.pop(st); |
| 305 |
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9120 | w.st_.pop(it); |
| 306 |
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9120 | w.st_.pop(pt); |
| 307 | 9120 | end = std::end(*pt); | |
| 308 |
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9120 | switch(st) |
| 309 | { | ||
| 310 | 12 | default: | |
| 311 | 12 | case writer::state::obj1: goto do_obj1; | |
| 312 | 296 | case writer::state::obj2: goto do_obj2; | |
| 313 | 50 | case writer::state::obj3: goto do_obj3; | |
| 314 | 8700 | case writer::state::obj4: goto do_obj4; | |
| 315 | 16 | case writer::state::obj5: goto do_obj5; | |
| 316 | 46 | case writer::state::obj6: goto do_obj6; | |
| 317 | break; | ||
| 318 | } | ||
| 319 | } | ||
| 320 | 18182 | do_obj1: | |
| 321 |
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18182 | if(BOOST_JSON_LIKELY( ss )) |
| 322 | 18170 | ss.append('{'); | |
| 323 | else | ||
| 324 |
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12 | return w.suspend(writer::state::obj1, it, pt); |
| 325 |
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18170 | if(BOOST_JSON_UNLIKELY( it == end )) |
| 326 | 563 | goto do_obj6; | |
| 327 | 2129 | for(;;) | |
| 328 | { | ||
| 329 | { | ||
| 330 | using std::get; | ||
| 331 | 19736 | string_view const sv = get<0>(*it); | |
| 332 | 19736 | w.cs0_ = { sv.data(), sv.size() }; | |
| 333 | } | ||
| 334 | if( true ) | ||
| 335 | { | ||
| 336 |
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19736 | if(BOOST_JSON_UNLIKELY( !write_string(w, ss) )) |
| 337 |
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173 | return w.suspend(writer::state::obj2, it, pt); |
| 338 | } | ||
| 339 | else | ||
| 340 | { | ||
| 341 | 296 | do_obj2: | |
| 342 |
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296 | if(BOOST_JSON_UNLIKELY( !resume_string(w, ss) )) |
| 343 |
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123 | return w.suspend(writer::state::obj2, it, pt); |
| 344 | } | ||
| 345 | 173 | do_obj3: | |
| 346 |
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19786 | if(BOOST_JSON_LIKELY(ss)) |
| 347 | 19736 | ss.append(':'); | |
| 348 | else | ||
| 349 |
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50 | return w.suspend(writer::state::obj3, it, pt); |
| 350 | 28436 | do_obj4: | |
| 351 | { | ||
| 352 | using std::get; | ||
| 353 | 28436 | w.p_ = std::addressof( get<1>(*it) ); | |
| 354 | } | ||
| 355 |
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28436 | if(BOOST_JSON_UNLIKELY(( !write_impl<Mapped, StackEmpty>(w, ss) ))) |
| 356 |
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8700 | return w.suspend(writer::state::obj4, it, pt); |
| 357 | 19736 | ++it; | |
| 358 |
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19736 | if(BOOST_JSON_UNLIKELY(it == end)) |
| 359 | 17607 | break; | |
| 360 | 2129 | do_obj5: | |
| 361 |
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2145 | if(BOOST_JSON_LIKELY(ss)) |
| 362 | 2129 | ss.append(','); | |
| 363 | else | ||
| 364 |
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16 | return w.suspend(writer::state::obj5, it, pt); |
| 365 | } | ||
| 366 | 18216 | do_obj6: | |
| 367 |
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18216 | if(BOOST_JSON_LIKELY( ss )) |
| 368 | { | ||
| 369 | 18170 | ss.append('}'); | |
| 370 | 18170 | return true; | |
| 371 | } | ||
| 372 |
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46 | return w.suspend(writer::state::obj6, it, pt); |
| 373 | 27290 | } | |
| 374 | |||
| 375 | template< class T, bool StackEmpty > | ||
| 376 | struct serialize_tuple_elem_helper | ||
| 377 | { | ||
| 378 | writer& w; | ||
| 379 | stream& ss; | ||
| 380 | T const* pt; | ||
| 381 | |||
| 382 | template< std::size_t I > | ||
| 383 | bool | ||
| 384 | 516 | operator()( std::integral_constant<std::size_t, I> ) const | |
| 385 | { | ||
| 386 | using std::get; | ||
| 387 | 516 | w.p_ = std::addressof( get<I>(*pt) ); | |
| 388 | |||
| 389 | using Elem = tuple_element_t<I, T>; | ||
| 390 | 516 | return write_impl<Elem, StackEmpty>(w, ss); | |
| 391 | } | ||
| 392 | }; | ||
| 393 | |||
| 394 | template<class T, bool StackEmpty> | ||
| 395 | BOOST_FORCEINLINE | ||
| 396 | bool | ||
| 397 | write_impl(tuple_conversion_tag, writer& w, stream& ss0) | ||
| 398 | { | ||
| 399 | T const* pt; | ||
| 400 | 174 | local_stream ss(ss0); | |
| 401 | std::size_t cur; | ||
| 402 | 64 | constexpr std::size_t N = std::tuple_size<T>::value; | |
| 403 | #if defined(_MSC_VER) | ||
| 404 | # pragma warning( push ) | ||
| 405 | # pragma warning( disable : 4127 ) | ||
| 406 | #endif | ||
| 407 |
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110 | if(StackEmpty || w.st_.empty()) |
| 408 | { | ||
| 409 | #if defined(_MSC_VER) | ||
| 410 | # pragma warning( pop ) | ||
| 411 | #endif | ||
| 412 |
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76 | BOOST_ASSERT( w.p_ ); |
| 413 | 76 | pt = reinterpret_cast<T const*>(w.p_); | |
| 414 | 76 | cur = 0; | |
| 415 | } | ||
| 416 | else | ||
| 417 | { | ||
| 418 | writer::state st; | ||
| 419 |
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98 | w.st_.pop(st); |
| 420 |
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98 | w.st_.pop(cur); |
| 421 |
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98 | w.st_.pop(pt); |
| 422 |
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98 | switch(st) |
| 423 | { | ||
| 424 | 2 | default: | |
| 425 | 2 | case writer::state::arr1: goto do_arr1; | |
| 426 | 82 | case writer::state::arr2: goto do_arr2; | |
| 427 | 8 | case writer::state::arr3: goto do_arr3; | |
| 428 | 6 | case writer::state::arr4: goto do_arr4; | |
| 429 | break; | ||
| 430 | } | ||
| 431 | } | ||
| 432 | 78 | do_arr1: | |
| 433 |
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78 | if(BOOST_JSON_LIKELY(ss)) |
| 434 | 76 | ss.append('['); | |
| 435 | else | ||
| 436 |
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2 | return w.suspend(writer::state::arr1, cur, pt); |
| 437 | 100 | for(;;) | |
| 438 | { | ||
| 439 | 258 | do_arr2: | |
| 440 | { | ||
| 441 |
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258 | bool const stop = !mp11::mp_with_index<N>( |
| 442 | cur, | ||
| 443 | serialize_tuple_elem_helper<T, StackEmpty>{w, ss, pt}); | ||
| 444 |
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258 | if(BOOST_JSON_UNLIKELY( stop )) |
| 445 |
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82 | return w.suspend(writer::state::arr2, cur, pt); |
| 446 | } | ||
| 447 |
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176 | if(BOOST_JSON_UNLIKELY( ++cur == N )) |
| 448 | 76 | break; | |
| 449 | 100 | do_arr3: | |
| 450 |
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108 | if(BOOST_JSON_LIKELY(ss)) |
| 451 | 100 | ss.append(','); | |
| 452 | else | ||
| 453 |
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8 | return w.suspend(writer::state::arr3, cur, pt); |
| 454 | } | ||
| 455 | 82 | do_arr4: | |
| 456 |
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82 | if(BOOST_JSON_LIKELY(ss)) |
| 457 | 76 | ss.append(']'); | |
| 458 | else | ||
| 459 |
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|
6 | return w.suspend(writer::state::arr4, cur, pt); |
| 460 | 76 | return true; | |
| 461 | 174 | } | |
| 462 | |||
| 463 | template< class T, bool StackEmpty > | ||
| 464 | struct serialize_struct_elem_helper | ||
| 465 | { | ||
| 466 | static_assert( | ||
| 467 | uniquely_named_members<T>::value, | ||
| 468 | "The type has several described members with the same name."); | ||
| 469 | |||
| 470 | writer& w; | ||
| 471 | local_stream& ss; | ||
| 472 | T const* pt; | ||
| 473 | writer::state st; | ||
| 474 | |||
| 475 | template< std::size_t I > | ||
| 476 | writer::state | ||
| 477 | operator()( std::integral_constant<std::size_t, I> ) const | ||
| 478 | { | ||
| 479 | using Ds = described_members<T>; | ||
| 480 | using D = mp11::mp_at_c<Ds, I>; | ||
| 481 | using M = described_member_t<T, D>; | ||
| 482 | |||
| 483 | switch(st) | ||
| 484 | { | ||
| 485 | case writer::state::obj2: goto do_obj2; | ||
| 486 | case writer::state::obj3: goto do_obj3; | ||
| 487 | case writer::state::obj4: goto do_obj4; | ||
| 488 | default: break; | ||
| 489 | } | ||
| 490 | |||
| 491 | { | ||
| 492 | string_view const sv = D::name; | ||
| 493 | w.cs0_ = { sv.data(), sv.size() }; | ||
| 494 | } | ||
| 495 | if( true ) | ||
| 496 | { | ||
| 497 | if(BOOST_JSON_UNLIKELY( !write_string(w, ss) )) | ||
| 498 | return writer::state::obj2; | ||
| 499 | } | ||
| 500 | else | ||
| 501 | { | ||
| 502 | do_obj2: | ||
| 503 | if(BOOST_JSON_UNLIKELY( !resume_string(w, ss) )) | ||
| 504 | return writer::state::obj2; | ||
| 505 | } | ||
| 506 | do_obj3: | ||
| 507 | if(BOOST_JSON_LIKELY(ss)) | ||
| 508 | ss.append(':'); | ||
| 509 | else | ||
| 510 | return writer::state::obj3; | ||
| 511 | do_obj4: | ||
| 512 | w.p_ = std::addressof( pt->* D::pointer ); | ||
| 513 | if(BOOST_JSON_UNLIKELY(( | ||
| 514 | !write_impl<M, StackEmpty>(w, ss) ))) | ||
| 515 | return writer::state::obj4; | ||
| 516 | |||
| 517 | return writer::state{}; | ||
| 518 | } | ||
| 519 | }; | ||
| 520 | |||
| 521 | template<class T, bool StackEmpty> | ||
| 522 | BOOST_FORCEINLINE | ||
| 523 | bool | ||
| 524 | write_impl(described_class_conversion_tag, writer& w, stream& ss0) | ||
| 525 | { | ||
| 526 | using Ds = described_members<T>; | ||
| 527 | |||
| 528 | T const* pt; | ||
| 529 | local_stream ss(ss0); | ||
| 530 | std::size_t cur; | ||
| 531 | constexpr std::size_t N = mp11::mp_size<Ds>::value; | ||
| 532 | writer::state st; | ||
| 533 | #if defined(_MSC_VER) | ||
| 534 | # pragma warning( push ) | ||
| 535 | # pragma warning( disable : 4127 ) | ||
| 536 | #endif | ||
| 537 | if(StackEmpty || w.st_.empty()) | ||
| 538 | #if defined(_MSC_VER) | ||
| 539 | # pragma warning( pop ) | ||
| 540 | #endif | ||
| 541 | { | ||
| 542 | BOOST_ASSERT( w.p_ ); | ||
| 543 | pt = reinterpret_cast<T const*>(w.p_); | ||
| 544 | cur = 0; | ||
| 545 | } | ||
| 546 | else | ||
| 547 | { | ||
| 548 | w.st_.pop(st); | ||
| 549 | w.st_.pop(cur); | ||
| 550 | w.st_.pop(pt); | ||
| 551 | switch(st) | ||
| 552 | { | ||
| 553 | default: | ||
| 554 | case writer::state::obj1: goto do_obj1; | ||
| 555 | case writer::state::obj2: // fall through | ||
| 556 | case writer::state::obj3: // fall through | ||
| 557 | case writer::state::obj4: goto do_obj2; | ||
| 558 | case writer::state::obj5: goto do_obj5; | ||
| 559 | case writer::state::obj6: goto do_obj6; | ||
| 560 | break; | ||
| 561 | } | ||
| 562 | } | ||
| 563 | do_obj1: | ||
| 564 | if(BOOST_JSON_LIKELY( ss )) | ||
| 565 | ss.append('{'); | ||
| 566 | else | ||
| 567 | return w.suspend(writer::state::obj1, cur, pt); | ||
| 568 | if(BOOST_JSON_UNLIKELY( cur == N )) | ||
| 569 | goto do_obj6; | ||
| 570 | for(;;) | ||
| 571 | { | ||
| 572 | st = {}; | ||
| 573 | do_obj2: | ||
| 574 | st = mp11::mp_with_index<N>( | ||
| 575 | cur, | ||
| 576 | serialize_struct_elem_helper<T, StackEmpty>{w, ss, pt, st}); | ||
| 577 | if(BOOST_JSON_UNLIKELY( st != writer::state{} )) | ||
| 578 | return w.suspend(st, cur, pt); | ||
| 579 | ++cur; | ||
| 580 | if(BOOST_JSON_UNLIKELY(cur == N)) | ||
| 581 | break; | ||
| 582 | do_obj5: | ||
| 583 | if(BOOST_JSON_LIKELY(ss)) | ||
| 584 | ss.append(','); | ||
| 585 | else | ||
| 586 | return w.suspend(writer::state::obj5, cur, pt); | ||
| 587 | } | ||
| 588 | do_obj6: | ||
| 589 | if(BOOST_JSON_LIKELY( ss )) | ||
| 590 | { | ||
| 591 | ss.append('}'); | ||
| 592 | return true; | ||
| 593 | } | ||
| 594 | return w.suspend(writer::state::obj6, cur, pt); | ||
| 595 | } | ||
| 596 | |||
| 597 | template<class T, bool StackEmpty> | ||
| 598 | BOOST_FORCEINLINE | ||
| 599 | bool | ||
| 600 | write_impl(described_enum_conversion_tag, writer& w, stream& ss) | ||
| 601 | { | ||
| 602 | #ifdef BOOST_DESCRIBE_CXX14 | ||
| 603 | using Integer = typename std::underlying_type<T>::type; | ||
| 604 | |||
| 605 | #if defined(_MSC_VER) | ||
| 606 | # pragma warning( push ) | ||
| 607 | # pragma warning( disable : 4127 ) | ||
| 608 | #endif | ||
| 609 | if(StackEmpty || w.st_.empty()) | ||
| 610 | #if defined(_MSC_VER) | ||
| 611 | # pragma warning( pop ) | ||
| 612 | #endif | ||
| 613 | { | ||
| 614 | BOOST_ASSERT( w.p_ ); | ||
| 615 | T const* pt = reinterpret_cast<T const*>(w.p_); | ||
| 616 | char const* const name = describe::enum_to_string(*pt, nullptr); | ||
| 617 | if( name ) | ||
| 618 | { | ||
| 619 | string_view const sv = name; | ||
| 620 | w.cs0_ = { sv.data(), sv.size() }; | ||
| 621 | return write_string(w, ss); | ||
| 622 | } | ||
| 623 | else | ||
| 624 | { | ||
| 625 | Integer n = static_cast<Integer>(*pt); | ||
| 626 | w.p_ = &n; | ||
| 627 | return write_impl<Integer, true>(w, ss); | ||
| 628 | } | ||
| 629 | } | ||
| 630 | else | ||
| 631 | { | ||
| 632 | writer::state st; | ||
| 633 | w.st_.peek(st); | ||
| 634 | if( st == writer::state::lit ) | ||
| 635 | return write_impl<Integer, false>(w, ss); | ||
| 636 | else | ||
| 637 | return resume_string(w, ss); | ||
| 638 | } | ||
| 639 | #else // BOOST_DESCRIBE_CXX14 | ||
| 640 | (void)w; | ||
| 641 | (void)ss; | ||
| 642 | static_assert( | ||
| 643 | !std::is_same<T, T>::value, | ||
| 644 | "described enums require C++14 support"); | ||
| 645 | return false; | ||
| 646 | #endif // BOOST_DESCRIBE_CXX14 | ||
| 647 | } | ||
| 648 | |||
| 649 | template< class T, bool StackEmpty > | ||
| 650 | struct serialize_variant_elem_helper | ||
| 651 | { | ||
| 652 | writer& w; | ||
| 653 | stream& ss; | ||
| 654 | |||
| 655 | template<class Elem> | ||
| 656 | bool | ||
| 657 | operator()(Elem const& x) const | ||
| 658 | { | ||
| 659 | w.p_ = std::addressof(x); | ||
| 660 | return write_impl<Elem, true>(w, ss); | ||
| 661 | } | ||
| 662 | }; | ||
| 663 | |||
| 664 | template< class T > | ||
| 665 | struct serialize_variant_elem_helper<T, false> | ||
| 666 | { | ||
| 667 | writer& w; | ||
| 668 | stream& ss; | ||
| 669 | |||
| 670 | template< std::size_t I > | ||
| 671 | bool | ||
| 672 | operator()( std::integral_constant<std::size_t, I> ) const | ||
| 673 | { | ||
| 674 | using std::get; | ||
| 675 | using Elem = remove_cvref<decltype(get<I>( | ||
| 676 | std::declval<T const&>() ))>; | ||
| 677 | return write_impl<Elem, false>(w, ss); | ||
| 678 | } | ||
| 679 | }; | ||
| 680 | |||
| 681 | template<class T, bool StackEmpty> | ||
| 682 | BOOST_FORCEINLINE | ||
| 683 | bool | ||
| 684 | write_impl(variant_conversion_tag, writer& w, stream& ss) | ||
| 685 | { | ||
| 686 | T const* pt; | ||
| 687 | |||
| 688 | using Index = remove_cvref<decltype( pt->index() )>; | ||
| 689 | |||
| 690 | #if defined(_MSC_VER) | ||
| 691 | # pragma warning( push ) | ||
| 692 | # pragma warning( disable : 4127 ) | ||
| 693 | #endif | ||
| 694 | if(StackEmpty || w.st_.empty()) | ||
| 695 | #if defined(_MSC_VER) | ||
| 696 | # pragma warning( pop ) | ||
| 697 | #endif | ||
| 698 | { | ||
| 699 | BOOST_ASSERT( w.p_ ); | ||
| 700 | pt = reinterpret_cast<T const*>(w.p_); | ||
| 701 | if(BOOST_JSON_LIKELY(( | ||
| 702 | visit(serialize_variant_elem_helper<T, true>{w, ss}, *pt)))) | ||
| 703 | return true; | ||
| 704 | |||
| 705 | Index const ix = pt->index(); | ||
| 706 | w.st_.push(ix); | ||
| 707 | return false; | ||
| 708 | } | ||
| 709 | else | ||
| 710 | { | ||
| 711 | Index ix; | ||
| 712 | w.st_.pop(ix); | ||
| 713 | |||
| 714 | constexpr std::size_t N = mp11::mp_size<T>::value; | ||
| 715 | if(BOOST_JSON_LIKELY(( mp11::mp_with_index<N>( | ||
| 716 | ix, | ||
| 717 | serialize_variant_elem_helper<T, false>{w, ss})))) | ||
| 718 | return true; | ||
| 719 | |||
| 720 | w.st_.push(ix); | ||
| 721 | return false; | ||
| 722 | } | ||
| 723 | } | ||
| 724 | |||
| 725 | template<class T, bool StackEmpty> | ||
| 726 | BOOST_FORCEINLINE | ||
| 727 | bool | ||
| 728 | write_impl(optional_conversion_tag, writer& w, stream& ss) | ||
| 729 | { | ||
| 730 | using Elem = value_result_type<T>; | ||
| 731 | |||
| 732 | bool done; | ||
| 733 | bool has_value; | ||
| 734 | |||
| 735 | #if defined(_MSC_VER) | ||
| 736 | # pragma warning( push ) | ||
| 737 | # pragma warning( disable : 4127 ) | ||
| 738 | #endif | ||
| 739 | if(StackEmpty || w.st_.empty()) | ||
| 740 | #if defined(_MSC_VER) | ||
| 741 | # pragma warning( pop ) | ||
| 742 | #endif | ||
| 743 | { | ||
| 744 | BOOST_ASSERT( w.p_ ); | ||
| 745 | T const* pt = reinterpret_cast<T const*>(w.p_); | ||
| 746 | has_value = static_cast<bool>(*pt); | ||
| 747 | if( has_value ) | ||
| 748 | { | ||
| 749 | w.p_ = std::addressof( *(*pt) ); | ||
| 750 | done = write_impl<Elem, true>(w, ss); | ||
| 751 | } | ||
| 752 | else | ||
| 753 | { | ||
| 754 | w.p_ = nullptr; | ||
| 755 | done = write_impl<std::nullptr_t, true>(w, ss);; | ||
| 756 | } | ||
| 757 | } | ||
| 758 | else | ||
| 759 | { | ||
| 760 | w.st_.pop(has_value); | ||
| 761 | |||
| 762 | if( has_value ) | ||
| 763 | done = write_impl<Elem, false>(w, ss); | ||
| 764 | else | ||
| 765 | done = write_impl<std::nullptr_t, false>(w, ss); | ||
| 766 | } | ||
| 767 | |||
| 768 | if(BOOST_JSON_UNLIKELY( !done )) | ||
| 769 | w.st_.push(has_value); | ||
| 770 | |||
| 771 | return done; | ||
| 772 | } | ||
| 773 | |||
| 774 | template<class T, bool StackEmpty> | ||
| 775 | BOOST_FORCEINLINE | ||
| 776 | bool | ||
| 777 | write_impl(path_conversion_tag, writer& w, stream& ss) | ||
| 778 | { | ||
| 779 | #if defined(_MSC_VER) | ||
| 780 | # pragma warning( push ) | ||
| 781 | # pragma warning( disable : 4127 ) | ||
| 782 | #endif | ||
| 783 | if(StackEmpty || w.st_.empty()) | ||
| 784 | #if defined(_MSC_VER) | ||
| 785 | # pragma warning( pop ) | ||
| 786 | #endif | ||
| 787 | { | ||
| 788 | BOOST_ASSERT( w.p_ ); | ||
| 789 | T const* pt = reinterpret_cast<T const*>(w.p_); | ||
| 790 | |||
| 791 | std::string const s = pt->generic_string(); | ||
| 792 | w.cs0_ = { s.data(), s.size() }; | ||
| 793 | if(BOOST_JSON_LIKELY( write_string(w, ss) )) | ||
| 794 | return true; | ||
| 795 | |||
| 796 | std::size_t const used = w.cs0_.used( s.data() ); | ||
| 797 | w.st_.push( used ); | ||
| 798 | w.st_.push( std::move(s) ); | ||
| 799 | return false; | ||
| 800 | } | ||
| 801 | else | ||
| 802 | { | ||
| 803 | std::string s; | ||
| 804 | std::size_t used; | ||
| 805 | w.st_.pop( s ); | ||
| 806 | w.st_.pop( used ); | ||
| 807 | |||
| 808 | w.cs0_ = { s.data(), s.size() }; | ||
| 809 | w.cs0_.skip(used); | ||
| 810 | |||
| 811 | if(BOOST_JSON_LIKELY( resume_string(w, ss) )) | ||
| 812 | return true; | ||
| 813 | |||
| 814 | used = w.cs0_.used( s.data() ); | ||
| 815 | w.st_.push( used ); | ||
| 816 | w.st_.push( std::move(s) ); | ||
| 817 | return false; | ||
| 818 | } | ||
| 819 | } | ||
| 820 | |||
| 821 | template<class T, bool StackEmpty> | ||
| 822 | bool | ||
| 823 |
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36665 | write_impl(writer& w, stream& ss) |
| 824 | { | ||
| 825 | using cat = detail::generic_conversion_category<T>; | ||
| 826 | 36664 | return write_impl<T, StackEmpty>( cat(), w, ss ); | |
| 827 | } | ||
| 828 | |||
| 829 | } // namespace detail | ||
| 830 | |||
| 831 | template<class T> | ||
| 832 | void | ||
| 833 | 437 | serializer::reset(T const* p) noexcept | |
| 834 | { | ||
| 835 | BOOST_STATIC_ASSERT( !std::is_pointer<T>::value ); | ||
| 836 | BOOST_STATIC_ASSERT( std::is_object<T>::value ); | ||
| 837 | |||
| 838 | 437 | p_ = p; | |
| 839 | 437 | fn0_ = &detail::write_impl<T, true>; | |
| 840 | 437 | fn1_ = &detail::write_impl<T, false>; | |
| 841 | 437 | st_.clear(); | |
| 842 | 437 | done_ = false; | |
| 843 | 437 | } | |
| 844 | |||
| 845 | } // namespace json | ||
| 846 | } // namespace boost | ||
| 847 | |||
| 848 | #endif // BOOST_JSON_IMPL_SERIALIZER_HPP | ||
| 849 |