src/cpp-common/bt2/field-class.hpp

   1 /*
   2  * Copyright (c) 2020 Philippe Proulx <pproulx@efficios.com>
   3  *
   4  * SPDX-License-Identifier: MIT
   5  */
   6
   7 #ifndef BABELTRACE_CPP_COMMON_BT2_FIELD_CLASS_HPP
   8 #define BABELTRACE_CPP_COMMON_BT2_FIELD_CLASS_HPP
   9
  10 #include <cstdint>
  11 #include <type_traits>
  12
  13 #include <babeltrace2/babeltrace.h>
  14
  15 #include "common/assert.h"
  16 #include "cpp-common/optional.hpp"
  17 #include "cpp-common/string_view.hpp"
  18
  19 #include "borrowed-obj.hpp"
  20 #include "common-iter.hpp"
  21 #include "exc.hpp"
  22 #include "field-path.hpp"
  23 #include "integer-range-set.hpp"
  24 #include "internal/shared-obj.hpp"
  25 #include "internal/utils.hpp"
  26 #include "value.hpp"
  27
  28 namespace bt2 {
  29 namespace internal {
  30
  31 struct FieldClassRefFuncs final
  32 {
  33     static void get(const bt_field_class * const libObjPtr)
  34     {
  35         bt_field_class_get_ref(libObjPtr);
  36     }
  37
  38     static void put(const bt_field_class * const libObjPtr)
  39     {
  40         bt_field_class_put_ref(libObjPtr);
  41     }
  42 };
  43
  44 template <typename ObjT, typename LibObjT>
  45 using SharedFieldClass = internal::SharedObj<ObjT, LibObjT, internal::FieldClassRefFuncs>;
  46
  47 template <typename LibObjT>
  48 struct CommonFieldClassSpec;
  49
  50 /* Functions specific to mutable field classes */
  51 template <>
  52 struct CommonFieldClassSpec<bt_field_class> final
  53 {
  54     static bt_value *userAttributes(bt_field_class * const libObjPtr) noexcept
  55     {
  56         return bt_field_class_borrow_user_attributes(libObjPtr);
  57     }
  58 };
  59
  60 /* Functions specific to constant field classes */
  61 template <>
  62 struct CommonFieldClassSpec<const bt_field_class> final
  63 {
  64     static const bt_value *userAttributes(const bt_field_class * const libObjPtr) noexcept
  65     {
  66         return bt_field_class_borrow_user_attributes_const(libObjPtr);
  67     }
  68 };
  69
  70 } /* namespace internal */
  71
  72 template <typename LibObjT>
  73 class CommonBitArrayFieldClass;
  74
  75 template <typename LibObjT>
  76 class CommonIntegerFieldClass;
  77
  78 template <typename LibObjT>
  79 class ConstEnumerationFieldClassMapping;
  80
  81 template <typename LibObjT>
  82 class CommonBaseEnumerationFieldClass;
  83
  84 template <typename LibObjT, typename MappingT>
  85 class CommonEnumerationFieldClass;
  86
  87 template <typename LibObjT>
  88 class CommonStructureFieldClass;
  89
  90 template <typename LibObjT>
  91 class CommonArrayFieldClass;
  92
  93 template <typename LibObjT>
  94 class CommonStaticArrayFieldClass;
  95
  96 template <typename LibObjT>
  97 class CommonDynamicArrayWithLengthFieldClass;
  98
  99 template <typename LibObjT>
 100 class CommonOptionFieldClass;
 101
 102 template <typename LibObjT>
 103 class CommonOptionWithSelectorFieldClass;
 104
 105 template <typename LibObjT>
 106 class CommonOptionWithBoolSelectorFieldClass;
 107
 108 template <typename LibObjT>
 109 class CommonVariantFieldClass;
 110
 111 template <typename LibObjT, typename RangeSetT>
 112 class CommonOptionWithIntegerSelectorFieldClass;
 113
 114 template <typename LibObjT>
 115 class CommonVariantWithoutSelectorFieldClass;
 116
 117 template <typename LibObjT>
 118 class CommonVariantWithSelectorFieldClass;
 119
 120 template <typename LibObjT>
 121 class ConstVariantWithIntegerSelectorFieldClassOption;
 122
 123 template <typename LibObjT, typename RangeSetT>
 124 class CommonVariantWithIntegerSelectorFieldClass;
 125
 126 template <typename LibObjT>
 127 class CommonEventClass;
 128
 129 template <typename LibObjT>
 130 class CommonStreamClass;
 131
 132 template <typename LibObjT>
 133 class CommonTraceClass;
 134
 135 enum class FieldClassType
 136 {
 137     BOOL = BT_FIELD_CLASS_TYPE_BOOL,
 138     BIT_ARRAY = BT_FIELD_CLASS_TYPE_BIT_ARRAY,
 139     UNSIGNED_INTEGER = BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER,
 140     SIGNED_INTEGER = BT_FIELD_CLASS_TYPE_SIGNED_INTEGER,
 141     UNSIGNED_ENUMERATION = BT_FIELD_CLASS_TYPE_UNSIGNED_ENUMERATION,
 142     SIGNED_ENUMERATION = BT_FIELD_CLASS_TYPE_SIGNED_ENUMERATION,
 143     SINGLE_PRECISION_REAL = BT_FIELD_CLASS_TYPE_SINGLE_PRECISION_REAL,
 144     DOUBLE_PRECISION_REAL = BT_FIELD_CLASS_TYPE_DOUBLE_PRECISION_REAL,
 145     STRING = BT_FIELD_CLASS_TYPE_STRING,
 146     STRUCTURE = BT_FIELD_CLASS_TYPE_STRUCTURE,
 147     STATIC_ARRAY = BT_FIELD_CLASS_TYPE_STATIC_ARRAY,
 148     DYNAMIC_ARRAY_WITHOUT_LENGTH = BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITHOUT_LENGTH_FIELD,
 149     DYNAMIC_ARRAY_WITH_LENGTH = BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITH_LENGTH_FIELD,
 150     OPTION_WITHOUT_SELECTOR = BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR_FIELD,
 151     OPTION_WITH_BOOL_SELECTOR = BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR_FIELD,
 152     OPTION_WITH_UNSIGNED_INTEGER_SELECTOR =
 153         BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD,
 154     OPTION_WITH_SIGNED_INTEGER_SELECTOR =
 155         BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR_FIELD,
 156     VARIANT_WITHOUT_SELECTOR = BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR_FIELD,
 157     VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR =
 158         BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD,
 159     VARIANT_WITH_SIGNED_INTEGER_SELECTOR =
 160         BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR_FIELD,
 161 };
 162
 163 template <typename LibObjT>
 164 class CommonFieldClass : public BorrowedObj<LibObjT>
 165 {
 166     /* Allow appendMember() to call `fc.libObjPtr()` */
 167     friend class CommonStructureFieldClass<bt_field_class>;
 168
 169     /* Allow appendOption() to call `fc.libObjPtr()` */
 170     friend class CommonVariantWithoutSelectorFieldClass<bt_field_class>;
 171
 172     friend class CommonVariantWithIntegerSelectorFieldClass<
 173         bt_field_class,
 174         ConstVariantWithIntegerSelectorFieldClassOption<
 175             const bt_field_class_variant_with_selector_field_integer_unsigned_option>>;
 176
 177     friend class CommonVariantWithIntegerSelectorFieldClass<
 178         bt_field_class,
 179         ConstVariantWithIntegerSelectorFieldClassOption<
 180             const bt_field_class_variant_with_selector_field_integer_signed_option>>;
 181
 182     /* Allow *FieldClass() to call `fc.libObjPtr()` */
 183     friend class CommonEventClass<bt_event_class>;
 184     friend class CommonStreamClass<bt_stream_class>;
 185
 186     /* Allow create*FieldClass() to call `fc.libObjPtr()` */
 187     friend class CommonTraceClass<bt_trace_class>;
 188
 189 private:
 190     using typename BorrowedObj<LibObjT>::_ThisBorrowedObj;
 191
 192 protected:
 193     using typename BorrowedObj<LibObjT>::_LibObjPtr;
 194     using _ThisCommonFieldClass = CommonFieldClass<LibObjT>;
 195
 196 public:
 197     using Shared = internal::SharedFieldClass<CommonFieldClass<LibObjT>, LibObjT>;
 198
 199     using UserAttributes =
 200         typename std::conditional<std::is_const<LibObjT>::value, ConstMapValue, MapValue>::type;
 201
 202     explicit CommonFieldClass(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObj {libObjPtr}
 203     {
 204     }
 205
 206     template <typename OtherLibObjT>
 207     CommonFieldClass(const CommonFieldClass<OtherLibObjT> fc) noexcept : _ThisBorrowedObj {fc}
 208     {
 209     }
 210
 211     template <typename OtherLibObjT>
 212     CommonFieldClass& operator=(const CommonFieldClass<OtherLibObjT> fc) noexcept
 213     {
 214         _ThisBorrowedObj::operator=(fc);
 215         return *this;
 216     }
 217
 218     FieldClassType type() const noexcept
 219     {
 220         return static_cast<FieldClassType>(bt_field_class_get_type(this->libObjPtr()));
 221     }
 222
 223     bool isBool() const noexcept
 224     {
 225         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_BOOL);
 226     }
 227
 228     bool isBitArray() const noexcept
 229     {
 230         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_BIT_ARRAY);
 231     }
 232
 233     bool isInteger() const noexcept
 234     {
 235         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_INTEGER);
 236     }
 237
 238     bool isUnsignedInteger() const noexcept
 239     {
 240         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER);
 241     }
 242
 243     bool isSignedInteger() const noexcept
 244     {
 245         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_SIGNED_INTEGER);
 246     }
 247
 248     bool isEnumeration() const noexcept
 249     {
 250         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_ENUMERATION);
 251     }
 252
 253     bool isUnsignedEnumeration() const noexcept
 254     {
 255         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_UNSIGNED_ENUMERATION);
 256     }
 257
 258     bool isSignedEnumeration() const noexcept
 259     {
 260         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_SIGNED_ENUMERATION);
 261     }
 262
 263     bool isReal() const noexcept
 264     {
 265         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_REAL);
 266     }
 267
 268     bool isSinglePrecisionReal() const noexcept
 269     {
 270         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_SINGLE_PRECISION_REAL);
 271     }
 272
 273     bool isDoublePrecisionReal() const noexcept
 274     {
 275         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_DOUBLE_PRECISION_REAL);
 276     }
 277
 278     bool isString() const noexcept
 279     {
 280         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_STRING);
 281     }
 282
 283     bool isStructure() const noexcept
 284     {
 285         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_STRUCTURE);
 286     }
 287
 288     bool isArray() const noexcept
 289     {
 290         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_ARRAY);
 291     }
 292
 293     bool isStaticArray() const noexcept
 294     {
 295         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_STATIC_ARRAY);
 296     }
 297
 298     bool isDynamicArray() const noexcept
 299     {
 300         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY);
 301     }
 302
 303     bool isDynamicArrayWithoutLength() const noexcept
 304     {
 305         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITHOUT_LENGTH_FIELD);
 306     }
 307
 308     bool isDynamicArrayWithLength() const noexcept
 309     {
 310         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITH_LENGTH_FIELD);
 311     }
 312
 313     bool isOption() const noexcept
 314     {
 315         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_OPTION);
 316     }
 317
 318     bool isOptionWithoutSelector() const noexcept
 319     {
 320         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR_FIELD);
 321     }
 322
 323     bool isOptionWithSelector() const noexcept
 324     {
 325         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_OPTION_WITH_SELECTOR_FIELD);
 326     }
 327
 328     bool isOptionWithBoolSelector() const noexcept
 329     {
 330         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR_FIELD);
 331     }
 332
 333     bool isOptionWithIntegerSelector() const noexcept
 334     {
 335         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_OPTION_WITH_INTEGER_SELECTOR_FIELD);
 336     }
 337
 338     bool isOptionWithUnsignedIntegerSelector() const noexcept
 339     {
 340         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD);
 341     }
 342
 343     bool isOptionWithSignedIntegerSelector() const noexcept
 344     {
 345         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR_FIELD);
 346     }
 347
 348     bool isVariant() const noexcept
 349     {
 350         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_VARIANT);
 351     }
 352
 353     bool isVariantWithoutSelector() const noexcept
 354     {
 355         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR_FIELD);
 356     }
 357
 358     bool isVariantWithSelector() const noexcept
 359     {
 360         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_VARIANT_WITH_SELECTOR_FIELD);
 361     }
 362
 363     bool isVariantWithIntegerSelector() const noexcept
 364     {
 365         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_VARIANT_WITH_INTEGER_SELECTOR_FIELD);
 366     }
 367
 368     bool isVariantWithUnsignedIntegerSelector() const noexcept
 369     {
 370         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD);
 371     }
 372
 373     bool isVariantWithSignedIntegerSelector() const noexcept
 374     {
 375         return this->_libTypeIs(BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR_FIELD);
 376     }
 377
 378     template <typename FieldClassT>
 379     FieldClassT as() const noexcept
 380     {
 381         return FieldClassT {this->libObjPtr()};
 382     }
 383
 384     CommonBitArrayFieldClass<LibObjT> asBitArray() const noexcept;
 385     CommonIntegerFieldClass<LibObjT> asInteger() const noexcept;
 386     CommonBaseEnumerationFieldClass<LibObjT> asEnumeration() const noexcept;
 387     CommonEnumerationFieldClass<LibObjT, ConstEnumerationFieldClassMapping<
 388                                              const bt_field_class_enumeration_unsigned_mapping>>
 389     asUnsignedEnumeration() const noexcept;
 390
 391     CommonEnumerationFieldClass<
 392         LibObjT, ConstEnumerationFieldClassMapping<const bt_field_class_enumeration_signed_mapping>>
 393     asSignedEnumeration() const noexcept;
 394
 395     CommonStructureFieldClass<LibObjT> asStructure() const noexcept;
 396     CommonArrayFieldClass<LibObjT> asArray() const noexcept;
 397     CommonStaticArrayFieldClass<LibObjT> asStaticArray() const noexcept;
 398     CommonDynamicArrayWithLengthFieldClass<LibObjT> asDynamicArrayWithLength() const noexcept;
 399     CommonOptionFieldClass<LibObjT> asOption() const noexcept;
 400     CommonOptionWithSelectorFieldClass<LibObjT> asOptionWithSelector() const noexcept;
 401     CommonOptionWithBoolSelectorFieldClass<LibObjT> asOptionWithBoolSelector() const noexcept;
 402
 403     CommonOptionWithIntegerSelectorFieldClass<LibObjT, ConstUnsignedIntegerRangeSet>
 404     asOptionWithUnsignedIntegerSelector() const noexcept;
 405
 406     CommonOptionWithIntegerSelectorFieldClass<LibObjT, ConstSignedIntegerRangeSet>
 407     asOptionWithSignedIntegerSelector() const noexcept;
 408
 409     CommonVariantFieldClass<LibObjT> asVariant() const noexcept;
 410     CommonVariantWithoutSelectorFieldClass<LibObjT> asVariantWithoutSelector() const noexcept;
 411     CommonVariantWithSelectorFieldClass<LibObjT> asVariantWithSelector() const noexcept;
 412
 413     CommonVariantWithIntegerSelectorFieldClass<
 414         LibObjT, ConstVariantWithIntegerSelectorFieldClassOption<
 415                      const bt_field_class_variant_with_selector_field_integer_unsigned_option>>
 416     asVariantWithUnsignedIntegerSelector() const noexcept;
 417
 418     CommonVariantWithIntegerSelectorFieldClass<
 419         LibObjT, ConstVariantWithIntegerSelectorFieldClassOption<
 420                      const bt_field_class_variant_with_selector_field_integer_signed_option>>
 421     asVariantWithSignedIntegerSelector() const noexcept;
 422
 423     template <typename LibValT>
 424     void userAttributes(const CommonMapValue<LibValT> userAttrs)
 425     {
 426         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 427
 428         bt_field_class_set_user_attributes(this->libObjPtr(), userAttrs.libObjPtr());
 429     }
 430
 431     ConstMapValue userAttributes() const noexcept
 432     {
 433         return ConstMapValue {internal::CommonFieldClassSpec<const bt_field_class>::userAttributes(
 434             this->libObjPtr())};
 435     }
 436
 437     UserAttributes userAttributes() noexcept
 438     {
 439         return UserAttributes {
 440             internal::CommonFieldClassSpec<LibObjT>::userAttributes(this->libObjPtr())};
 441     }
 442
 443     Shared shared() const noexcept
 444     {
 445         return Shared::createWithRef(*this);
 446     }
 447
 448 protected:
 449     bool _libTypeIs(const bt_field_class_type type) const noexcept
 450     {
 451         return bt_field_class_type_is(bt_field_class_get_type(this->libObjPtr()), type);
 452     }
 453 };
 454
 455 using FieldClass = CommonFieldClass<bt_field_class>;
 456 using ConstFieldClass = CommonFieldClass<const bt_field_class>;
 457
 458 namespace internal {
 459
 460 struct FieldClassTypeDescr
 461 {
 462     using Const = ConstFieldClass;
 463     using NonConst = FieldClass;
 464 };
 465
 466 template <>
 467 struct TypeDescr<FieldClass> : public FieldClassTypeDescr
 468 {
 469 };
 470
 471 template <>
 472 struct TypeDescr<ConstFieldClass> : public FieldClassTypeDescr
 473 {
 474 };
 475
 476 } /* namespace internal */
 477
 478 template <typename LibObjT>
 479 class CommonBitArrayFieldClass final : public CommonFieldClass<LibObjT>
 480 {
 481 private:
 482     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
 483     using typename CommonFieldClass<LibObjT>::_ThisCommonFieldClass;
 484
 485 public:
 486     using Shared = internal::SharedFieldClass<CommonBitArrayFieldClass<LibObjT>, LibObjT>;
 487
 488     explicit CommonBitArrayFieldClass(const _LibObjPtr libObjPtr) noexcept :
 489         _ThisCommonFieldClass {libObjPtr}
 490     {
 491         BT_ASSERT_DBG(this->isBitArray());
 492     }
 493
 494     template <typename OtherLibObjT>
 495     CommonBitArrayFieldClass(const CommonBitArrayFieldClass<OtherLibObjT> fc) noexcept :
 496         _ThisCommonFieldClass {fc}
 497     {
 498     }
 499
 500     template <typename OtherLibObjT>
 501     CommonBitArrayFieldClass<LibObjT>&
 502     operator=(const CommonBitArrayFieldClass<OtherLibObjT> fc) noexcept
 503     {
 504         _ThisCommonFieldClass::operator=(fc);
 505         return *this;
 506     }
 507
 508     std::uint64_t length() const noexcept
 509     {
 510         return bt_field_class_bit_array_get_length(this->libObjPtr());
 511     }
 512
 513     Shared shared() const noexcept
 514     {
 515         return Shared::createWithRef(*this);
 516     }
 517 };
 518
 519 using BitArrayFieldClass = CommonBitArrayFieldClass<bt_field_class>;
 520 using ConstBitArrayFieldClass = CommonBitArrayFieldClass<const bt_field_class>;
 521
 522 namespace internal {
 523
 524 struct BitArrayFieldClassTypeDescr
 525 {
 526     using Const = ConstBitArrayFieldClass;
 527     using NonConst = BitArrayFieldClass;
 528 };
 529
 530 template <>
 531 struct TypeDescr<BitArrayFieldClass> : public BitArrayFieldClassTypeDescr
 532 {
 533 };
 534
 535 template <>
 536 struct TypeDescr<ConstBitArrayFieldClass> : public BitArrayFieldClassTypeDescr
 537 {
 538 };
 539
 540 } /* namespace internal */
 541
 542 enum class DisplayBase
 543 {
 544     BINARY = BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_BINARY,
 545     OCTAL = BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_OCTAL,
 546     DECIMAL = BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_DECIMAL,
 547     HEXADECIMAL = BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_HEXADECIMAL,
 548 };
 549
 550 template <typename LibObjT>
 551 class CommonIntegerFieldClass : public CommonFieldClass<LibObjT>
 552 {
 553 private:
 554     using typename CommonFieldClass<LibObjT>::_ThisCommonFieldClass;
 555
 556 protected:
 557     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
 558     using _ThisCommonIntegerFieldClass = CommonIntegerFieldClass<LibObjT>;
 559
 560 public:
 561     using Shared = internal::SharedFieldClass<CommonIntegerFieldClass<LibObjT>, LibObjT>;
 562
 563     explicit CommonIntegerFieldClass(const _LibObjPtr libObjPtr) noexcept :
 564         _ThisCommonFieldClass {libObjPtr}
 565     {
 566         BT_ASSERT_DBG(this->isInteger());
 567     }
 568
 569     template <typename OtherLibObjT>
 570     CommonIntegerFieldClass(const CommonIntegerFieldClass<OtherLibObjT> fc) noexcept :
 571         _ThisCommonFieldClass {fc}
 572     {
 573     }
 574
 575     template <typename OtherLibObjT>
 576     CommonIntegerFieldClass& operator=(const CommonIntegerFieldClass<OtherLibObjT> fc) noexcept
 577     {
 578         _ThisCommonFieldClass::operator=(fc);
 579         return *this;
 580     }
 581
 582     void fieldValueRange(const std::uint64_t n) noexcept
 583     {
 584         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 585
 586         bt_field_class_integer_set_field_value_range(this->libObjPtr(), n);
 587     }
 588
 589     std::uint64_t fieldValueRange() const noexcept
 590     {
 591         return bt_field_class_integer_get_field_value_range(this->libObjPtr());
 592     }
 593
 594     void preferredDisplayBase(const DisplayBase base) noexcept
 595     {
 596         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 597
 598         bt_field_class_integer_set_preferred_display_base(
 599             this->libObjPtr(), static_cast<bt_field_class_integer_preferred_display_base>(base));
 600     }
 601
 602     DisplayBase preferredDisplayBase() const noexcept
 603     {
 604         return static_cast<DisplayBase>(
 605             bt_field_class_integer_get_preferred_display_base(this->libObjPtr()));
 606     }
 607
 608     Shared shared() const noexcept
 609     {
 610         return Shared::createWithRef(*this);
 611     }
 612 };
 613
 614 using IntegerFieldClass = CommonIntegerFieldClass<bt_field_class>;
 615 using ConstIntegerFieldClass = CommonIntegerFieldClass<const bt_field_class>;
 616
 617 namespace internal {
 618
 619 struct IntegerFieldClassTypeDescr
 620 {
 621     using Const = ConstIntegerFieldClass;
 622     using NonConst = IntegerFieldClass;
 623 };
 624
 625 template <>
 626 struct TypeDescr<IntegerFieldClass> : public IntegerFieldClassTypeDescr
 627 {
 628 };
 629
 630 template <>
 631 struct TypeDescr<ConstIntegerFieldClass> : public IntegerFieldClassTypeDescr
 632 {
 633 };
 634
 635 } /* namespace internal */
 636
 637 namespace internal {
 638
 639 template <typename LibObjT>
 640 struct ConstEnumerationFieldClassMappingSpec;
 641
 642 /* Functions specific to unsigned enumeration field class mappings */
 643 template <>
 644 struct ConstEnumerationFieldClassMappingSpec<const bt_field_class_enumeration_unsigned_mapping>
 645     final
 646 {
 647     static const bt_integer_range_set_unsigned *
 648     ranges(const bt_field_class_enumeration_unsigned_mapping * const libObjPtr) noexcept
 649     {
 650         return bt_field_class_enumeration_unsigned_mapping_borrow_ranges_const(libObjPtr);
 651     }
 652
 653     static const char *
 654     label(const bt_field_class_enumeration_unsigned_mapping * const libObjPtr) noexcept
 655     {
 656         return bt_field_class_enumeration_mapping_get_label(
 657             bt_field_class_enumeration_unsigned_mapping_as_mapping_const(libObjPtr));
 658     }
 659 };
 660
 661 /* Functions specific to signed enumeration field class mappings */
 662 template <>
 663 struct ConstEnumerationFieldClassMappingSpec<const bt_field_class_enumeration_signed_mapping> final
 664 {
 665     static const bt_integer_range_set_signed *
 666     ranges(const bt_field_class_enumeration_signed_mapping * const libObjPtr) noexcept
 667     {
 668         return bt_field_class_enumeration_signed_mapping_borrow_ranges_const(libObjPtr);
 669     }
 670
 671     static const char *
 672     label(const bt_field_class_enumeration_signed_mapping * const libObjPtr) noexcept
 673     {
 674         return bt_field_class_enumeration_mapping_get_label(
 675             bt_field_class_enumeration_signed_mapping_as_mapping_const(libObjPtr));
 676     }
 677 };
 678
 679 } /* namespace internal */
 680
 681 template <typename LibObjT>
 682 class ConstEnumerationFieldClassMapping final : public BorrowedObj<LibObjT>
 683 {
 684 private:
 685     using typename BorrowedObj<LibObjT>::_ThisBorrowedObj;
 686     using typename BorrowedObj<LibObjT>::_LibObjPtr;
 687
 688 public:
 689     using RangeSet = typename std::conditional<
 690         std::is_same<LibObjT, const bt_field_class_enumeration_unsigned_mapping>::value,
 691         ConstUnsignedIntegerRangeSet, ConstSignedIntegerRangeSet>::type;
 692
 693     explicit ConstEnumerationFieldClassMapping(const _LibObjPtr libObjPtr) noexcept :
 694         _ThisBorrowedObj {libObjPtr}
 695     {
 696     }
 697
 698     ConstEnumerationFieldClassMapping(const ConstEnumerationFieldClassMapping& mapping) noexcept :
 699         _ThisBorrowedObj {mapping}
 700     {
 701     }
 702
 703     ConstEnumerationFieldClassMapping&
 704     operator=(const ConstEnumerationFieldClassMapping& mapping) noexcept
 705     {
 706         _ThisBorrowedObj::operator=(mapping);
 707         return *this;
 708     }
 709
 710     RangeSet ranges() const noexcept
 711     {
 712         return RangeSet {
 713             internal::ConstEnumerationFieldClassMappingSpec<LibObjT>::ranges(this->libObjPtr())};
 714     }
 715
 716     bpstd::string_view label() const noexcept
 717     {
 718         return internal::ConstEnumerationFieldClassMappingSpec<LibObjT>::label(this->libObjPtr());
 719     }
 720 };
 721
 722 using ConstUnsignedEnumerationFieldClassMapping =
 723     ConstEnumerationFieldClassMapping<const bt_field_class_enumeration_unsigned_mapping>;
 724
 725 using ConstSignedEnumerationFieldClassMapping =
 726     ConstEnumerationFieldClassMapping<const bt_field_class_enumeration_signed_mapping>;
 727
 728 namespace internal {
 729
 730 template <typename MappingT>
 731 struct CommonEnumerationFieldClassSpec;
 732
 733 /* Functions specific to unsigned enumeration field classes */
 734 template <>
 735 struct CommonEnumerationFieldClassSpec<ConstUnsignedEnumerationFieldClassMapping> final
 736 {
 737     static const bt_field_class_enumeration_unsigned_mapping *
 738     mappingByIndex(const bt_field_class * const libObjPtr, const std::uint64_t index) noexcept
 739     {
 740         return bt_field_class_enumeration_unsigned_borrow_mapping_by_index_const(libObjPtr, index);
 741     }
 742
 743     static const bt_field_class_enumeration_unsigned_mapping *
 744     mappingByLabel(const bt_field_class * const libObjPtr, const char * const label) noexcept
 745     {
 746         return bt_field_class_enumeration_unsigned_borrow_mapping_by_label_const(libObjPtr, label);
 747     }
 748
 749     static bt_field_class_enumeration_add_mapping_status
 750     addMapping(bt_field_class * const libObjPtr, const char * const label,
 751                const bt_integer_range_set_unsigned * const libRanges) noexcept
 752     {
 753         return bt_field_class_enumeration_unsigned_add_mapping(libObjPtr, label, libRanges);
 754     }
 755 };
 756
 757 /* Functions specific to signed enumeration field classes */
 758 template <>
 759 struct CommonEnumerationFieldClassSpec<ConstSignedEnumerationFieldClassMapping> final
 760 {
 761     static const bt_field_class_enumeration_signed_mapping *
 762     mappingByIndex(const bt_field_class * const libObjPtr, const std::uint64_t index) noexcept
 763     {
 764         return bt_field_class_enumeration_signed_borrow_mapping_by_index_const(libObjPtr, index);
 765     }
 766
 767     static const bt_field_class_enumeration_signed_mapping *
 768     mappingByLabel(const bt_field_class * const libObjPtr, const char * const label) noexcept
 769     {
 770         return bt_field_class_enumeration_signed_borrow_mapping_by_label_const(libObjPtr, label);
 771     }
 772
 773     static bt_field_class_enumeration_add_mapping_status
 774     addMapping(bt_field_class * const libObjPtr, const char * const label,
 775                const bt_integer_range_set_signed * const libRanges) noexcept
 776     {
 777         return bt_field_class_enumeration_signed_add_mapping(libObjPtr, label, libRanges);
 778     }
 779 };
 780
 781 } /* namespace internal */
 782
 783 template <typename LibObjT>
 784 class CommonBaseEnumerationFieldClass : public CommonIntegerFieldClass<LibObjT>
 785 {
 786 private:
 787     using typename CommonIntegerFieldClass<LibObjT>::_ThisCommonIntegerFieldClass;
 788
 789 protected:
 790     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
 791     using _ThisCommonBaseEnumerationFieldClass = CommonBaseEnumerationFieldClass<LibObjT>;
 792
 793 public:
 794     using Shared = internal::SharedFieldClass<_ThisCommonBaseEnumerationFieldClass, LibObjT>;
 795
 796     explicit CommonBaseEnumerationFieldClass(const _LibObjPtr libObjPtr) noexcept :
 797         _ThisCommonIntegerFieldClass {libObjPtr}
 798     {
 799         BT_ASSERT_DBG(this->isEnumeration());
 800     }
 801
 802     template <typename OtherLibObjT>
 803     CommonBaseEnumerationFieldClass(const CommonBaseEnumerationFieldClass<OtherLibObjT> fc) noexcept
 804         :
 805         _ThisCommonIntegerFieldClass {fc}
 806     {
 807     }
 808
 809     template <typename OtherLibObjT>
 810     CommonBaseEnumerationFieldClass&
 811     operator=(const CommonBaseEnumerationFieldClass<OtherLibObjT> fc) noexcept
 812     {
 813         _ThisCommonIntegerFieldClass::operator=(fc);
 814         return *this;
 815     }
 816
 817     std::uint64_t size() const noexcept
 818     {
 819         return bt_field_class_enumeration_get_mapping_count(this->libObjPtr());
 820     }
 821
 822     Shared shared() const noexcept
 823     {
 824         return Shared::createWithRef(*this);
 825     }
 826 };
 827
 828 template <typename LibObjT, typename MappingT>
 829 class CommonEnumerationFieldClass final : public CommonBaseEnumerationFieldClass<LibObjT>
 830 {
 831 private:
 832     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
 833     using typename CommonBaseEnumerationFieldClass<LibObjT>::_ThisCommonBaseEnumerationFieldClass;
 834     using _ThisCommonEnumerationFieldClass = CommonEnumerationFieldClass<LibObjT, MappingT>;
 835
 836 public:
 837     using Shared = internal::SharedFieldClass<_ThisCommonEnumerationFieldClass, LibObjT>;
 838     using Iterator = CommonIterator<CommonEnumerationFieldClass, MappingT>;
 839     using Mapping = MappingT;
 840
 841     explicit CommonEnumerationFieldClass(const _LibObjPtr libObjPtr) noexcept :
 842         _ThisCommonBaseEnumerationFieldClass {libObjPtr}
 843     {
 844         BT_ASSERT_DBG(this->isEnumeration());
 845     }
 846
 847     template <typename OtherLibObjT>
 848     CommonEnumerationFieldClass(
 849         const CommonEnumerationFieldClass<OtherLibObjT, MappingT> fc) noexcept :
 850         _ThisCommonEnumerationFieldClass {fc}
 851     {
 852     }
 853
 854     template <typename OtherLibObjT>
 855     CommonEnumerationFieldClass&
 856     operator=(const CommonEnumerationFieldClass<OtherLibObjT, MappingT> fc) noexcept
 857     {
 858         _ThisCommonEnumerationFieldClass::operator=(fc);
 859         return *this;
 860     }
 861
 862     Mapping operator[](const std::uint64_t index) const noexcept
 863     {
 864         return Mapping {internal::CommonEnumerationFieldClassSpec<MappingT>::mappingByIndex(
 865             this->libObjPtr(), index)};
 866     }
 867
 868     nonstd::optional<Mapping> operator[](const char * const label) const noexcept
 869     {
 870         const auto libObjPtr = internal::CommonEnumerationFieldClassSpec<MappingT>::mappingByLabel(
 871             this->libObjPtr(), label);
 872
 873         if (libObjPtr) {
 874             return Mapping {libObjPtr};
 875         }
 876
 877         return nonstd::nullopt;
 878     }
 879
 880     nonstd::optional<Mapping> operator[](const std::string& label) const noexcept
 881     {
 882         return (*this)[label.data()];
 883     }
 884
 885     void addMapping(const char * const label, const typename Mapping::RangeSet ranges)
 886     {
 887         const auto status = internal::CommonEnumerationFieldClassSpec<MappingT>::addMapping(
 888             this->libObjPtr(), label, ranges.libObjPtr());
 889
 890         if (status == BT_FIELD_CLASS_ENUMERATION_ADD_MAPPING_STATUS_MEMORY_ERROR) {
 891             throw MemoryError {};
 892         }
 893     }
 894
 895     void addMapping(const std::string& label, const typename Mapping::RangeSet ranges)
 896     {
 897         this->addMapping(label.data(), ranges);
 898     }
 899
 900     Iterator begin() const noexcept
 901     {
 902         return Iterator {*this, 0};
 903     }
 904
 905     Iterator end() const noexcept
 906     {
 907         return Iterator {*this, this->size()};
 908     }
 909
 910     Shared shared() const noexcept
 911     {
 912         return Shared::createWithRef(*this);
 913     }
 914 };
 915
 916 using EnumerationFieldClass = CommonBaseEnumerationFieldClass<bt_field_class>;
 917 using ConstEnumerationFieldClass = CommonBaseEnumerationFieldClass<const bt_field_class>;
 918
 919 using UnsignedEnumerationFieldClass =
 920     CommonEnumerationFieldClass<bt_field_class, ConstUnsignedEnumerationFieldClassMapping>;
 921
 922 using ConstUnsignedEnumerationFieldClass =
 923     CommonEnumerationFieldClass<const bt_field_class, ConstUnsignedEnumerationFieldClassMapping>;
 924
 925 using SignedEnumerationFieldClass =
 926     CommonEnumerationFieldClass<bt_field_class, ConstSignedEnumerationFieldClassMapping>;
 927
 928 using ConstSignedEnumerationFieldClass =
 929     CommonEnumerationFieldClass<const bt_field_class, ConstSignedEnumerationFieldClassMapping>;
 930
 931 namespace internal {
 932
 933 struct UnsignedEnumerationFieldClassTypeDescr
 934 {
 935     using Const = ConstUnsignedEnumerationFieldClass;
 936     using NonConst = UnsignedEnumerationFieldClass;
 937 };
 938
 939 template <>
 940 struct TypeDescr<UnsignedEnumerationFieldClass> : public UnsignedEnumerationFieldClassTypeDescr
 941 {
 942 };
 943
 944 template <>
 945 struct TypeDescr<ConstUnsignedEnumerationFieldClass> : public UnsignedEnumerationFieldClassTypeDescr
 946 {
 947 };
 948
 949 struct SignedEnumerationFieldClassTypeDescr
 950 {
 951     using Const = ConstSignedEnumerationFieldClass;
 952     using NonConst = SignedEnumerationFieldClass;
 953 };
 954
 955 template <>
 956 struct TypeDescr<SignedEnumerationFieldClass> : public SignedEnumerationFieldClassTypeDescr
 957 {
 958 };
 959
 960 template <>
 961 struct TypeDescr<ConstSignedEnumerationFieldClass> : public SignedEnumerationFieldClassTypeDescr
 962 {
 963 };
 964
 965 template <typename LibObjT>
 966 struct CommonStructureFieldClassMemberSpec;
 967
 968 /* Functions specific to mutable structure field class members */
 969 template <>
 970 struct CommonStructureFieldClassMemberSpec<bt_field_class_structure_member> final
 971 {
 972     static bt_field_class *fieldClass(bt_field_class_structure_member * const libObjPtr) noexcept
 973     {
 974         return bt_field_class_structure_member_borrow_field_class(libObjPtr);
 975     }
 976
 977     static bt_value *userAttributes(bt_field_class_structure_member * const libObjPtr) noexcept
 978     {
 979         return bt_field_class_structure_member_borrow_user_attributes(libObjPtr);
 980     }
 981 };
 982
 983 /* Functions specific to constant structure field class members */
 984 template <>
 985 struct CommonStructureFieldClassMemberSpec<const bt_field_class_structure_member> final
 986 {
 987     static const bt_field_class *
 988     fieldClass(const bt_field_class_structure_member * const libObjPtr) noexcept
 989     {
 990         return bt_field_class_structure_member_borrow_field_class_const(libObjPtr);
 991     }
 992
 993     static const bt_value *
 994     userAttributes(const bt_field_class_structure_member * const libObjPtr) noexcept
 995     {
 996         return bt_field_class_structure_member_borrow_user_attributes_const(libObjPtr);
 997     }
 998 };
 999
1000 } /* namespace internal */
1001
1002 template <typename LibObjT>
1003 class CommonStructureFieldClassMember final : public BorrowedObj<LibObjT>
1004 {
1005 private:
1006     using typename BorrowedObj<LibObjT>::_LibObjPtr;
1007     using typename BorrowedObj<LibObjT>::_ThisBorrowedObj;
1008
1009     using _FieldClass =
1010         typename std::conditional<std::is_const<LibObjT>::value, ConstFieldClass, FieldClass>::type;
1011
1012 public:
1013     using UserAttributes =
1014         typename std::conditional<std::is_const<LibObjT>::value, ConstMapValue, MapValue>::type;
1015
1016     explicit CommonStructureFieldClassMember(const _LibObjPtr libObjPtr) noexcept :
1017         _ThisBorrowedObj {libObjPtr}
1018     {
1019     }
1020
1021     template <typename OtherLibObjT>
1022     CommonStructureFieldClassMember(const CommonStructureFieldClassMember<OtherLibObjT> fc) noexcept
1023         :
1024         _ThisBorrowedObj {fc}
1025     {
1026     }
1027
1028     template <typename OtherLibObjT>
1029     CommonStructureFieldClassMember<LibObjT>&
1030     operator=(const CommonStructureFieldClassMember<OtherLibObjT> fc) noexcept
1031     {
1032         _ThisBorrowedObj::operator=(fc);
1033         return *this;
1034     }
1035
1036     bpstd::string_view name() const noexcept
1037     {
1038         return bt_field_class_structure_member_get_name(this->libObjPtr());
1039     }
1040
1041     ConstFieldClass fieldClass() const noexcept
1042     {
1043         return ConstFieldClass {internal::CommonStructureFieldClassMemberSpec<
1044             const bt_field_class_structure_member>::fieldClass(this->libObjPtr())};
1045     }
1046
1047     _FieldClass fieldClass() noexcept
1048     {
1049         return _FieldClass {
1050             internal::CommonStructureFieldClassMemberSpec<LibObjT>::fieldClass(this->libObjPtr())};
1051     }
1052
1053     template <typename LibValT>
1054     void userAttributes(const CommonMapValue<LibValT> userAttrs)
1055     {
1056         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
1057
1058         bt_field_class_structure_member_set_user_attributes(this->libObjPtr(),
1059                                                             userAttrs.libObjPtr());
1060     }
1061
1062     ConstMapValue userAttributes() const noexcept
1063     {
1064         return ConstMapValue {internal::CommonStructureFieldClassMemberSpec<
1065             const bt_field_class_structure_member>::userAttributes(this->libObjPtr())};
1066     }
1067
1068     UserAttributes userAttributes() noexcept
1069     {
1070         return UserAttributes {
1071             internal::CommonStructureFieldClassMemberSpec<LibObjT>::userAttributes(
1072                 this->libObjPtr())};
1073     }
1074 };
1075
1076 using StructureFieldClassMember = CommonStructureFieldClassMember<bt_field_class_structure_member>;
1077
1078 using ConstStructureFieldClassMember =
1079     CommonStructureFieldClassMember<const bt_field_class_structure_member>;
1080
1081 namespace internal {
1082
1083 struct StructureFieldClassMemberTypeDescr
1084 {
1085     using Const = ConstStructureFieldClassMember;
1086     using NonConst = StructureFieldClassMember;
1087 };
1088
1089 template <>
1090 struct TypeDescr<StructureFieldClassMember> : public StructureFieldClassMemberTypeDescr
1091 {
1092 };
1093
1094 template <>
1095 struct TypeDescr<ConstStructureFieldClassMember> : public StructureFieldClassMemberTypeDescr
1096 {
1097 };
1098
1099 template <typename LibObjT>
1100 struct CommonStructureFieldClassSpec;
1101
1102 /* Functions specific to mutable structure field classes */
1103 template <>
1104 struct CommonStructureFieldClassSpec<bt_field_class> final
1105 {
1106     static bt_field_class_structure_member *memberByIndex(bt_field_class * const libObjPtr,
1107                                                           const std::uint64_t index) noexcept
1108     {
1109         return bt_field_class_structure_borrow_member_by_index(libObjPtr, index);
1110     }
1111
1112     static bt_field_class_structure_member *memberByName(bt_field_class * const libObjPtr,
1113                                                          const char * const name) noexcept
1114     {
1115         return bt_field_class_structure_borrow_member_by_name(libObjPtr, name);
1116     }
1117 };
1118
1119 /* Functions specific to constant structure field classes */
1120 template <>
1121 struct CommonStructureFieldClassSpec<const bt_field_class> final
1122 {
1123     static const bt_field_class_structure_member *
1124     memberByIndex(const bt_field_class * const libObjPtr, const std::uint64_t index) noexcept
1125     {
1126         return bt_field_class_structure_borrow_member_by_index_const(libObjPtr, index);
1127     }
1128
1129     static const bt_field_class_structure_member *
1130     memberByName(const bt_field_class * const libObjPtr, const char * const name) noexcept
1131     {
1132         return bt_field_class_structure_borrow_member_by_name_const(libObjPtr, name);
1133     }
1134 };
1135
1136 } /* namespace internal */
1137
1138 template <typename LibObjT>
1139 class CommonStructureFieldClass final : public CommonFieldClass<LibObjT>
1140 {
1141 private:
1142     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
1143     using typename CommonFieldClass<LibObjT>::_ThisCommonFieldClass;
1144
1145 public:
1146     using Shared = internal::SharedFieldClass<CommonStructureFieldClass<LibObjT>, LibObjT>;
1147     using Member =
1148         typename std::conditional<std::is_const<LibObjT>::value, ConstStructureFieldClassMember,
1149                                   StructureFieldClassMember>::type;
1150
1151     using Iterator = CommonIterator<CommonStructureFieldClass<LibObjT>, Member>;
1152
1153     explicit CommonStructureFieldClass(const _LibObjPtr libObjPtr) noexcept :
1154         _ThisCommonFieldClass {libObjPtr}
1155     {
1156         BT_ASSERT_DBG(this->isStructure());
1157     }
1158
1159     template <typename OtherLibObjT>
1160     CommonStructureFieldClass(const CommonStructureFieldClass<OtherLibObjT> fc) noexcept :
1161         _ThisCommonFieldClass {fc}
1162     {
1163     }
1164
1165     template <typename OtherLibObjT>
1166     CommonStructureFieldClass& operator=(const CommonStructureFieldClass<OtherLibObjT> fc) noexcept
1167     {
1168         _ThisCommonFieldClass::operator=(fc);
1169         return *this;
1170     }
1171
1172     void appendMember(const char * const name, const FieldClass fc)
1173     {
1174         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
1175
1176         const auto status =
1177             bt_field_class_structure_append_member(this->libObjPtr(), name, fc.libObjPtr());
1178
1179         if (status == BT_FIELD_CLASS_STRUCTURE_APPEND_MEMBER_STATUS_MEMORY_ERROR) {
1180             throw MemoryError {};
1181         }
1182     }
1183
1184     void appendMember(const std::string& name, const FieldClass fc)
1185     {
1186         this->appendMember(name.data(), fc);
1187     }
1188
1189     std::uint64_t size() const noexcept
1190     {
1191         return bt_field_class_structure_get_member_count(this->libObjPtr());
1192     }
1193
1194     Iterator begin() const noexcept
1195     {
1196         return Iterator {*this, 0};
1197     }
1198
1199     Iterator end() const noexcept
1200     {
1201         return Iterator {*this, this->size()};
1202     }
1203
1204     ConstStructureFieldClassMember operator[](const std::uint64_t index) const noexcept
1205     {
1206         return ConstStructureFieldClassMember {
1207             internal::CommonStructureFieldClassSpec<const bt_field_class>::memberByIndex(
1208                 this->libObjPtr(), index)};
1209     }
1210
1211     Member operator[](const std::uint64_t index) noexcept
1212     {
1213         return Member {internal::CommonStructureFieldClassSpec<LibObjT>::memberByIndex(
1214             this->libObjPtr(), index)};
1215     }
1216
1217     nonstd::optional<ConstStructureFieldClassMember>
1218     operator[](const char * const name) const noexcept
1219     {
1220         const auto libObjPtr =
1221             internal::CommonStructureFieldClassSpec<const bt_field_class>::memberByName(
1222                 this->libObjPtr(), name);
1223
1224         if (libObjPtr) {
1225             return ConstStructureFieldClassMember {libObjPtr};
1226         }
1227
1228         return nonstd::nullopt;
1229     }
1230
1231     nonstd::optional<ConstStructureFieldClassMember>
1232     operator[](const std::string& name) const noexcept
1233     {
1234         return (*this)[name.data()];
1235     }
1236
1237     nonstd::optional<Member> operator[](const char * const name) noexcept
1238     {
1239         const auto libObjPtr =
1240             internal::CommonStructureFieldClassSpec<LibObjT>::memberByName(this->libObjPtr(), name);
1241
1242         if (libObjPtr) {
1243             return Member {libObjPtr};
1244         }
1245
1246         return nonstd::nullopt;
1247     }
1248
1249     nonstd::optional<Member> operator[](const std::string& name) noexcept
1250     {
1251         return (*this)[name.data()];
1252     }
1253
1254     Shared shared() const noexcept
1255     {
1256         return Shared::createWithRef(*this);
1257     }
1258 };
1259
1260 using StructureFieldClass = CommonStructureFieldClass<bt_field_class>;
1261 using ConstStructureFieldClass = CommonStructureFieldClass<const bt_field_class>;
1262
1263 namespace internal {
1264
1265 struct StructureFieldClassTypeDescr
1266 {
1267     using Const = ConstStructureFieldClass;
1268     using NonConst = StructureFieldClass;
1269 };
1270
1271 template <>
1272 struct TypeDescr<StructureFieldClass> : public StructureFieldClassTypeDescr
1273 {
1274 };
1275
1276 template <>
1277 struct TypeDescr<ConstStructureFieldClass> : public StructureFieldClassTypeDescr
1278 {
1279 };
1280
1281 template <typename LibObjT>
1282 struct CommonArrayFieldClassSpec;
1283
1284 /* Functions specific to mutable array field classes */
1285 template <>
1286 struct CommonArrayFieldClassSpec<bt_field_class> final
1287 {
1288     static bt_field_class *elementFieldClass(bt_field_class * const libObjPtr) noexcept
1289     {
1290         return bt_field_class_array_borrow_element_field_class(libObjPtr);
1291     }
1292 };
1293
1294 /* Functions specific to constant array field classes */
1295 template <>
1296 struct CommonArrayFieldClassSpec<const bt_field_class> final
1297 {
1298     static const bt_field_class *elementFieldClass(const bt_field_class * const libObjPtr) noexcept
1299     {
1300         return bt_field_class_array_borrow_element_field_class_const(libObjPtr);
1301     }
1302 };
1303
1304 } /* namespace internal */
1305
1306 template <typename LibObjT>
1307 class CommonArrayFieldClass : public CommonFieldClass<LibObjT>
1308 {
1309 private:
1310     using typename CommonFieldClass<LibObjT>::_ThisCommonFieldClass;
1311
1312     using _FieldClass =
1313         typename std::conditional<std::is_const<LibObjT>::value, ConstFieldClass, FieldClass>::type;
1314
1315 protected:
1316     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
1317     using _ThisCommonArrayFieldClass = CommonArrayFieldClass<LibObjT>;
1318
1319 public:
1320     using Shared = internal::SharedFieldClass<CommonArrayFieldClass<LibObjT>, LibObjT>;
1321
1322     explicit CommonArrayFieldClass(const _LibObjPtr libObjPtr) noexcept :
1323         _ThisCommonFieldClass {libObjPtr}
1324     {
1325         BT_ASSERT_DBG(this->isArray());
1326     }
1327
1328     template <typename OtherLibObjT>
1329     CommonArrayFieldClass(const CommonArrayFieldClass<OtherLibObjT> fc) noexcept :
1330         _ThisCommonFieldClass {fc}
1331     {
1332     }
1333
1334     template <typename OtherLibObjT>
1335     CommonArrayFieldClass& operator=(const CommonArrayFieldClass<OtherLibObjT> fc) noexcept
1336     {
1337         _ThisCommonFieldClass::operator=(fc);
1338         return *this;
1339     }
1340
1341     ConstFieldClass elementFieldClass() const noexcept
1342     {
1343         return ConstFieldClass {
1344             internal::CommonArrayFieldClassSpec<const bt_field_class>::elementFieldClass(
1345                 this->libObjPtr())};
1346     }
1347
1348     _FieldClass elementFieldClass() noexcept
1349     {
1350         return _FieldClass {
1351             internal::CommonArrayFieldClassSpec<LibObjT>::elementFieldClass(this->libObjPtr())};
1352     }
1353
1354     Shared shared() const noexcept
1355     {
1356         return Shared::createWithRef(*this);
1357     }
1358 };
1359
1360 using ArrayFieldClass = CommonArrayFieldClass<bt_field_class>;
1361 using ConstArrayFieldClass = CommonArrayFieldClass<const bt_field_class>;
1362
1363 namespace internal {
1364
1365 struct ArrayFieldClassTypeDescr
1366 {
1367     using Const = ConstArrayFieldClass;
1368     using NonConst = ArrayFieldClass;
1369 };
1370
1371 template <>
1372 struct TypeDescr<ArrayFieldClass> : public ArrayFieldClassTypeDescr
1373 {
1374 };
1375
1376 template <>
1377 struct TypeDescr<ConstArrayFieldClass> : public ArrayFieldClassTypeDescr
1378 {
1379 };
1380
1381 } /* namespace internal */
1382
1383 template <typename LibObjT>
1384 class CommonStaticArrayFieldClass final : public CommonArrayFieldClass<LibObjT>
1385 {
1386 private:
1387     using typename CommonArrayFieldClass<LibObjT>::_ThisCommonArrayFieldClass;
1388     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
1389
1390 public:
1391     using Shared = internal::SharedFieldClass<CommonStaticArrayFieldClass<LibObjT>, LibObjT>;
1392
1393     explicit CommonStaticArrayFieldClass(const _LibObjPtr libObjPtr) noexcept :
1394         _ThisCommonArrayFieldClass {libObjPtr}
1395     {
1396         BT_ASSERT_DBG(this->isStaticArray());
1397     }
1398
1399     template <typename OtherLibObjT>
1400     CommonStaticArrayFieldClass(const CommonStaticArrayFieldClass<OtherLibObjT> fc) noexcept :
1401         _ThisCommonArrayFieldClass {fc}
1402     {
1403     }
1404
1405     template <typename OtherLibObjT>
1406     CommonStaticArrayFieldClass&
1407     operator=(const CommonStaticArrayFieldClass<OtherLibObjT> fc) noexcept
1408     {
1409         _ThisCommonArrayFieldClass::operator=(fc);
1410         return *this;
1411     }
1412
1413     std::uint64_t length() const noexcept
1414     {
1415         return bt_field_class_array_static_get_length(this->libObjPtr());
1416     }
1417
1418     Shared shared() const noexcept
1419     {
1420         return Shared::createWithRef(*this);
1421     }
1422 };
1423
1424 using StaticArrayFieldClass = CommonStaticArrayFieldClass<bt_field_class>;
1425 using ConstStaticArrayFieldClass = CommonStaticArrayFieldClass<const bt_field_class>;
1426
1427 namespace internal {
1428
1429 struct StaticArrayFieldClassTypeDescr
1430 {
1431     using Const = ConstStaticArrayFieldClass;
1432     using NonConst = StaticArrayFieldClass;
1433 };
1434
1435 template <>
1436 struct TypeDescr<StaticArrayFieldClass> : public StaticArrayFieldClassTypeDescr
1437 {
1438 };
1439
1440 template <>
1441 struct TypeDescr<ConstStaticArrayFieldClass> : public StaticArrayFieldClassTypeDescr
1442 {
1443 };
1444
1445 } /* namespace internal */
1446
1447 template <typename LibObjT>
1448 class CommonDynamicArrayWithLengthFieldClass final : public CommonArrayFieldClass<LibObjT>
1449 {
1450 private:
1451     using typename CommonArrayFieldClass<LibObjT>::_ThisCommonArrayFieldClass;
1452     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
1453
1454 public:
1455     using Shared =
1456         internal::SharedFieldClass<CommonDynamicArrayWithLengthFieldClass<LibObjT>, LibObjT>;
1457
1458     explicit CommonDynamicArrayWithLengthFieldClass(const _LibObjPtr libObjPtr) noexcept :
1459         _ThisCommonArrayFieldClass {libObjPtr}
1460     {
1461         BT_ASSERT_DBG(this->isDynamicArrayWithLength());
1462     }
1463
1464     template <typename OtherLibObjT>
1465     CommonDynamicArrayWithLengthFieldClass(
1466         const CommonDynamicArrayWithLengthFieldClass<OtherLibObjT> fc) noexcept :
1467         _ThisCommonArrayFieldClass {fc}
1468     {
1469     }
1470
1471     template <typename OtherLibObjT>
1472     CommonDynamicArrayWithLengthFieldClass&
1473     operator=(const CommonDynamicArrayWithLengthFieldClass<OtherLibObjT> fc) noexcept
1474     {
1475         _ThisCommonArrayFieldClass::operator=(fc);
1476         return *this;
1477     }
1478
1479     ConstFieldPath lengthFieldPath() const noexcept
1480     {
1481         return ConstFieldPath {
1482             bt_field_class_array_dynamic_with_length_field_borrow_length_field_path_const(
1483                 this->libObjPtr())};
1484     }
1485
1486     Shared shared() const noexcept
1487     {
1488         return Shared::createWithRef(*this);
1489     }
1490 };
1491
1492 using DynamicArrayWithLengthFieldClass = CommonDynamicArrayWithLengthFieldClass<bt_field_class>;
1493
1494 using ConstDynamicArrayWithLengthFieldClass =
1495     CommonDynamicArrayWithLengthFieldClass<const bt_field_class>;
1496
1497 namespace internal {
1498
1499 struct DynamicArrayWithLengthFieldClassTypeDescr
1500 {
1501     using Const = ConstDynamicArrayWithLengthFieldClass;
1502     using NonConst = DynamicArrayWithLengthFieldClass;
1503 };
1504
1505 template <>
1506 struct TypeDescr<DynamicArrayWithLengthFieldClass> :
1507     public DynamicArrayWithLengthFieldClassTypeDescr
1508 {
1509 };
1510
1511 template <>
1512 struct TypeDescr<ConstDynamicArrayWithLengthFieldClass> :
1513     public DynamicArrayWithLengthFieldClassTypeDescr
1514 {
1515 };
1516
1517 template <typename LibObjT>
1518 struct CommonOptionFieldClassSpec;
1519
1520 /* Functions specific to mutable option field classes */
1521 template <>
1522 struct CommonOptionFieldClassSpec<bt_field_class> final
1523 {
1524     static bt_field_class *fieldClass(bt_field_class * const libObjPtr) noexcept
1525     {
1526         return bt_field_class_option_borrow_field_class(libObjPtr);
1527     }
1528 };
1529
1530 /* Functions specific to constant option field classes */
1531 template <>
1532 struct CommonOptionFieldClassSpec<const bt_field_class> final
1533 {
1534     static const bt_field_class *fieldClass(const bt_field_class * const libObjPtr) noexcept
1535     {
1536         return bt_field_class_option_borrow_field_class_const(libObjPtr);
1537     }
1538 };
1539
1540 } /* namespace internal */
1541
1542 template <typename LibObjT>
1543 class CommonOptionFieldClass : public CommonFieldClass<LibObjT>
1544 {
1545 private:
1546     using typename CommonFieldClass<LibObjT>::_ThisCommonFieldClass;
1547
1548     using _FieldClass =
1549         typename std::conditional<std::is_const<LibObjT>::value, ConstFieldClass, FieldClass>::type;
1550
1551 protected:
1552     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
1553     using _ThisCommonOptionFieldClass = CommonOptionFieldClass<LibObjT>;
1554
1555 public:
1556     using Shared = internal::SharedFieldClass<CommonOptionFieldClass<LibObjT>, LibObjT>;
1557
1558     explicit CommonOptionFieldClass(const _LibObjPtr libObjPtr) noexcept :
1559         _ThisCommonFieldClass {libObjPtr}
1560     {
1561         BT_ASSERT_DBG(this->isOption());
1562     }
1563
1564     template <typename OtherLibObjT>
1565     CommonOptionFieldClass(const CommonOptionFieldClass<OtherLibObjT> fc) noexcept :
1566         _ThisCommonFieldClass {fc}
1567     {
1568     }
1569
1570     template <typename OtherLibObjT>
1571     CommonOptionFieldClass& operator=(const CommonOptionFieldClass<OtherLibObjT> fc) noexcept
1572     {
1573         _ThisCommonFieldClass::operator=(fc);
1574         return *this;
1575     }
1576
1577     ConstFieldClass fieldClass() const noexcept
1578     {
1579         return ConstFieldClass {
1580             internal::CommonOptionFieldClassSpec<const bt_field_class>::fieldClass(
1581                 this->libObjPtr())};
1582     }
1583
1584     _FieldClass fieldClass() noexcept
1585     {
1586         return _FieldClass {
1587             internal::CommonOptionFieldClassSpec<LibObjT>::fieldClass(this->libObjPtr())};
1588     }
1589
1590     Shared shared() const noexcept
1591     {
1592         return Shared::createWithRef(*this);
1593     }
1594 };
1595
1596 using OptionFieldClass = CommonOptionFieldClass<bt_field_class>;
1597 using ConstOptionFieldClass = CommonOptionFieldClass<const bt_field_class>;
1598
1599 namespace internal {
1600
1601 struct OptionFieldClassTypeDescr
1602 {
1603     using Const = ConstOptionFieldClass;
1604     using NonConst = OptionFieldClass;
1605 };
1606
1607 template <>
1608 struct TypeDescr<OptionFieldClass> : public OptionFieldClassTypeDescr
1609 {
1610 };
1611
1612 template <>
1613 struct TypeDescr<ConstOptionFieldClass> : public OptionFieldClassTypeDescr
1614 {
1615 };
1616
1617 } /* namespace internal */
1618
1619 template <typename LibObjT>
1620 class CommonOptionWithSelectorFieldClass : public CommonOptionFieldClass<LibObjT>
1621 {
1622 private:
1623     using typename CommonOptionFieldClass<LibObjT>::_ThisCommonOptionFieldClass;
1624
1625 protected:
1626     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
1627     using _ThisCommonOptionWithSelectorFieldClass = CommonOptionWithSelectorFieldClass<LibObjT>;
1628
1629 public:
1630     using Shared = internal::SharedFieldClass<CommonOptionWithSelectorFieldClass<LibObjT>, LibObjT>;
1631
1632     explicit CommonOptionWithSelectorFieldClass(const _LibObjPtr libObjPtr) noexcept :
1633         _ThisCommonOptionFieldClass {libObjPtr}
1634     {
1635         BT_ASSERT_DBG(this->isOptionWithSelector());
1636     }
1637
1638     template <typename OtherLibObjT>
1639     CommonOptionWithSelectorFieldClass(
1640         const CommonOptionWithSelectorFieldClass<OtherLibObjT> fc) noexcept :
1641         _ThisCommonOptionFieldClass {fc}
1642     {
1643     }
1644
1645     template <typename OtherLibObjT>
1646     CommonOptionWithSelectorFieldClass&
1647     operator=(const CommonOptionWithSelectorFieldClass<OtherLibObjT> fc) noexcept
1648     {
1649         _ThisCommonOptionFieldClass::operator=(fc);
1650         return *this;
1651     }
1652
1653     ConstFieldPath selectorFieldPath() const noexcept
1654     {
1655         return ConstFieldPath {
1656             bt_field_class_option_with_selector_field_borrow_selector_field_path_const(
1657                 this->libObjPtr())};
1658     }
1659
1660     Shared shared() const noexcept
1661     {
1662         return Shared::createWithRef(*this);
1663     }
1664 };
1665
1666 using OptionWithSelectorFieldClass = CommonOptionWithSelectorFieldClass<bt_field_class>;
1667 using ConstOptionWithSelectorFieldClass = CommonOptionWithSelectorFieldClass<const bt_field_class>;
1668
1669 namespace internal {
1670
1671 struct OptionWithSelectorFieldClassTypeDescr
1672 {
1673     using Const = ConstOptionWithSelectorFieldClass;
1674     using NonConst = OptionWithSelectorFieldClass;
1675 };
1676
1677 template <>
1678 struct TypeDescr<OptionWithSelectorFieldClass> : public OptionWithSelectorFieldClassTypeDescr
1679 {
1680 };
1681
1682 template <>
1683 struct TypeDescr<ConstOptionWithSelectorFieldClass> : public OptionWithSelectorFieldClassTypeDescr
1684 {
1685 };
1686
1687 } /* namespace internal */
1688
1689 template <typename LibObjT>
1690 class CommonOptionWithBoolSelectorFieldClass : public CommonOptionWithSelectorFieldClass<LibObjT>
1691 {
1692 private:
1693     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
1694
1695     using typename CommonOptionWithSelectorFieldClass<
1696         LibObjT>::_ThisCommonOptionWithSelectorFieldClass;
1697
1698 public:
1699     using Shared =
1700         internal::SharedFieldClass<CommonOptionWithBoolSelectorFieldClass<LibObjT>, LibObjT>;
1701
1702     explicit CommonOptionWithBoolSelectorFieldClass(const _LibObjPtr libObjPtr) noexcept :
1703         _ThisCommonOptionWithSelectorFieldClass {libObjPtr}
1704     {
1705         BT_ASSERT_DBG(this->isOptionWithBoolSelector());
1706     }
1707
1708     template <typename OtherLibObjT>
1709     CommonOptionWithBoolSelectorFieldClass(
1710         const CommonOptionWithBoolSelectorFieldClass<OtherLibObjT> fc) noexcept :
1711         _ThisCommonOptionWithSelectorFieldClass {fc}
1712     {
1713     }
1714
1715     template <typename OtherLibObjT>
1716     CommonOptionWithBoolSelectorFieldClass&
1717     operator=(const CommonOptionWithBoolSelectorFieldClass<OtherLibObjT> fc) noexcept
1718     {
1719         _ThisCommonOptionWithSelectorFieldClass::operator=(fc);
1720         return *this;
1721     }
1722
1723     bool selectorIsReversed() const noexcept
1724     {
1725         return bt_field_class_option_with_selector_field_bool_selector_is_reversed(
1726             this->libObjPtr());
1727     }
1728
1729     Shared shared() const noexcept
1730     {
1731         return Shared::createWithRef(*this);
1732     }
1733 };
1734
1735 using OptionWithBoolSelectorFieldClass = CommonOptionWithBoolSelectorFieldClass<bt_field_class>;
1736
1737 using ConstOptionWithBoolSelectorFieldClass =
1738     CommonOptionWithBoolSelectorFieldClass<const bt_field_class>;
1739
1740 namespace internal {
1741
1742 struct OptionWithBoolSelectorFieldClassTypeDescr
1743 {
1744     using Const = ConstOptionWithBoolSelectorFieldClass;
1745     using NonConst = OptionWithBoolSelectorFieldClass;
1746 };
1747
1748 template <>
1749 struct TypeDescr<OptionWithBoolSelectorFieldClass> :
1750     public OptionWithBoolSelectorFieldClassTypeDescr
1751 {
1752 };
1753
1754 template <>
1755 struct TypeDescr<ConstOptionWithBoolSelectorFieldClass> :
1756     public OptionWithBoolSelectorFieldClassTypeDescr
1757 {
1758 };
1759
1760 template <typename RangeSetT>
1761 struct CommonOptionWithIntegerSelectorFieldClassSpec;
1762
1763 /* Functions specific to option field classes with unsigned integer ranges */
1764 template <>
1765 struct CommonOptionWithIntegerSelectorFieldClassSpec<ConstUnsignedIntegerRangeSet> final
1766 {
1767     static const bt_integer_range_set_unsigned *
1768     ranges(const bt_field_class * const libObjPtr) noexcept
1769     {
1770         return bt_field_class_option_with_selector_field_integer_unsigned_borrow_selector_ranges_const(
1771             libObjPtr);
1772     }
1773 };
1774
1775 /* Functions specific to option field classes with signed ranges */
1776 template <>
1777 struct CommonOptionWithIntegerSelectorFieldClassSpec<ConstSignedIntegerRangeSet> final
1778 {
1779     static const bt_integer_range_set_signed *
1780     ranges(const bt_field_class * const libObjPtr) noexcept
1781     {
1782         return bt_field_class_option_with_selector_field_integer_signed_borrow_selector_ranges_const(
1783             libObjPtr);
1784     }
1785 };
1786
1787 } /* namespace internal */
1788
1789 template <typename LibObjT, typename RangeSetT>
1790 class CommonOptionWithIntegerSelectorFieldClass : public CommonOptionWithSelectorFieldClass<LibObjT>
1791 {
1792 private:
1793     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
1794
1795     using typename CommonOptionWithSelectorFieldClass<
1796         LibObjT>::_ThisCommonOptionWithSelectorFieldClass;
1797
1798     using _ThisCommonOptionWithIntegerSelectorFieldClass =
1799         CommonOptionWithIntegerSelectorFieldClass<LibObjT, RangeSetT>;
1800
1801 public:
1802     using Shared =
1803         internal::SharedFieldClass<_ThisCommonOptionWithIntegerSelectorFieldClass, LibObjT>;
1804
1805     using RangeSet = RangeSetT;
1806
1807     explicit CommonOptionWithIntegerSelectorFieldClass(const _LibObjPtr libObjPtr) noexcept :
1808         _ThisCommonOptionWithSelectorFieldClass {libObjPtr}
1809     {
1810         BT_ASSERT_DBG(this->isOptionWithIntegerSelector());
1811     }
1812
1813     template <typename OtherLibObjT>
1814     CommonOptionWithIntegerSelectorFieldClass(
1815         const CommonOptionWithIntegerSelectorFieldClass<OtherLibObjT, RangeSetT> fc) noexcept :
1816         _ThisCommonOptionWithSelectorFieldClass {fc}
1817     {
1818     }
1819
1820     template <typename OtherLibObjT>
1821     CommonOptionWithIntegerSelectorFieldClass&
1822     operator=(const CommonOptionWithIntegerSelectorFieldClass<OtherLibObjT, RangeSetT> fc) noexcept
1823     {
1824         _ThisCommonOptionWithSelectorFieldClass::operator=(fc);
1825         return *this;
1826     }
1827
1828     RangeSet ranges() const noexcept
1829     {
1830         return RangeSet {internal::CommonOptionWithIntegerSelectorFieldClassSpec<RangeSetT>::ranges(
1831             this->libObjPtr())};
1832     }
1833
1834     Shared shared() const noexcept
1835     {
1836         return Shared::createWithRef(*this);
1837     }
1838 };
1839
1840 using OptionWithUnsignedIntegerSelectorFieldClass =
1841     CommonOptionWithIntegerSelectorFieldClass<bt_field_class, ConstUnsignedIntegerRangeSet>;
1842
1843 using ConstOptionWithUnsignedIntegerSelectorFieldClass =
1844     CommonOptionWithIntegerSelectorFieldClass<const bt_field_class, ConstUnsignedIntegerRangeSet>;
1845
1846 using OptionWithSignedIntegerSelectorFieldClass =
1847     CommonOptionWithIntegerSelectorFieldClass<bt_field_class, ConstSignedIntegerRangeSet>;
1848
1849 using ConstOptionWithSignedIntegerSelectorFieldClass =
1850     CommonOptionWithIntegerSelectorFieldClass<const bt_field_class, ConstSignedIntegerRangeSet>;
1851
1852 namespace internal {
1853
1854 struct OptionWithUnsignedIntegerSelectorFieldClassTypeDescr
1855 {
1856     using Const = ConstOptionWithUnsignedIntegerSelectorFieldClass;
1857     using NonConst = OptionWithUnsignedIntegerSelectorFieldClass;
1858 };
1859
1860 template <>
1861 struct TypeDescr<OptionWithUnsignedIntegerSelectorFieldClass> :
1862     public OptionWithUnsignedIntegerSelectorFieldClassTypeDescr
1863 {
1864 };
1865
1866 template <>
1867 struct TypeDescr<ConstOptionWithUnsignedIntegerSelectorFieldClass> :
1868     public OptionWithUnsignedIntegerSelectorFieldClassTypeDescr
1869 {
1870 };
1871
1872 struct OptionWithSignedIntegerSelectorFieldClassTypeDescr
1873 {
1874     using Const = ConstOptionWithSignedIntegerSelectorFieldClass;
1875     using NonConst = OptionWithSignedIntegerSelectorFieldClass;
1876 };
1877
1878 template <>
1879 struct TypeDescr<OptionWithSignedIntegerSelectorFieldClass> :
1880     public OptionWithSignedIntegerSelectorFieldClassTypeDescr
1881 {
1882 };
1883
1884 template <>
1885 struct TypeDescr<ConstOptionWithSignedIntegerSelectorFieldClass> :
1886     public OptionWithSignedIntegerSelectorFieldClassTypeDescr
1887 {
1888 };
1889
1890 template <typename LibObjT>
1891 struct CommonVariantFieldClassOptionSpec;
1892
1893 /* Functions specific to mutable variant field class options */
1894 template <>
1895 struct CommonVariantFieldClassOptionSpec<bt_field_class_variant_option> final
1896 {
1897     static bt_field_class *fieldClass(bt_field_class_variant_option * const libObjPtr) noexcept
1898     {
1899         return bt_field_class_variant_option_borrow_field_class(libObjPtr);
1900     }
1901
1902     static bt_value *userAttributes(bt_field_class_variant_option * const libObjPtr) noexcept
1903     {
1904         return bt_field_class_variant_option_borrow_user_attributes(libObjPtr);
1905     }
1906 };
1907
1908 /* Functions specific to constant variant field class options */
1909 template <>
1910 struct CommonVariantFieldClassOptionSpec<const bt_field_class_variant_option> final
1911 {
1912     static const bt_field_class *
1913     fieldClass(const bt_field_class_variant_option * const libObjPtr) noexcept
1914     {
1915         return bt_field_class_variant_option_borrow_field_class_const(libObjPtr);
1916     }
1917
1918     static const bt_value *
1919     userAttributes(const bt_field_class_variant_option * const libObjPtr) noexcept
1920     {
1921         return bt_field_class_variant_option_borrow_user_attributes_const(libObjPtr);
1922     }
1923 };
1924
1925 } /* namespace internal */
1926
1927 template <typename LibObjT>
1928 class CommonVariantFieldClassOption : public BorrowedObj<LibObjT>
1929 {
1930 private:
1931     using typename BorrowedObj<LibObjT>::_ThisBorrowedObj;
1932     using typename BorrowedObj<LibObjT>::_LibObjPtr;
1933
1934     using _FieldClass =
1935         typename std::conditional<std::is_const<LibObjT>::value, ConstFieldClass, FieldClass>::type;
1936
1937 public:
1938     using UserAttributes =
1939         typename std::conditional<std::is_const<LibObjT>::value, ConstMapValue, MapValue>::type;
1940
1941     explicit CommonVariantFieldClassOption(const _LibObjPtr libObjPtr) noexcept :
1942         _ThisBorrowedObj {libObjPtr}
1943     {
1944     }
1945
1946     template <typename OtherLibObjT>
1947     CommonVariantFieldClassOption(const CommonVariantFieldClassOption<OtherLibObjT> fc) noexcept :
1948         _ThisBorrowedObj {fc}
1949     {
1950     }
1951
1952     template <typename OtherLibObjT>
1953     CommonVariantFieldClassOption&
1954     operator=(const CommonVariantFieldClassOption<OtherLibObjT> fc) noexcept
1955     {
1956         _ThisBorrowedObj::operator=(fc);
1957         return *this;
1958     }
1959
1960     nonstd::optional<bpstd::string_view> name() const noexcept
1961     {
1962         const auto name = bt_field_class_variant_option_get_name(this->libObjPtr());
1963
1964         if (name) {
1965             return name;
1966         }
1967
1968         return nonstd::nullopt;
1969     }
1970
1971     ConstFieldClass fieldClass() const noexcept
1972     {
1973         return ConstFieldClass {internal::CommonVariantFieldClassOptionSpec<
1974             const bt_field_class_variant_option>::fieldClass(this->libObjPtr())};
1975     }
1976
1977     _FieldClass fieldClass() noexcept
1978     {
1979         return _FieldClass {
1980             internal::CommonVariantFieldClassOptionSpec<LibObjT>::fieldClass(this->libObjPtr())};
1981     }
1982
1983     template <typename LibValT>
1984     void userAttributes(const CommonMapValue<LibValT> userAttrs)
1985     {
1986         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
1987
1988         bt_field_class_variant_option_set_user_attributes(this->libObjPtr(), userAttrs.libObjPtr());
1989     }
1990
1991     ConstMapValue userAttributes() const noexcept
1992     {
1993         return ConstMapValue {internal::CommonVariantFieldClassOptionSpec<
1994             const bt_field_class_variant_option>::userAttributes(this->libObjPtr())};
1995     }
1996
1997     UserAttributes userAttributes() noexcept
1998     {
1999         return UserAttributes {internal::CommonVariantFieldClassOptionSpec<LibObjT>::userAttributes(
2000             this->libObjPtr())};
2001     }
2002 };
2003
2004 using VariantFieldClassOption = CommonVariantFieldClassOption<bt_field_class_variant_option>;
2005
2006 using ConstVariantFieldClassOption =
2007     CommonVariantFieldClassOption<const bt_field_class_variant_option>;
2008
2009 namespace internal {
2010
2011 struct VariantFieldClassOptionTypeDescr
2012 {
2013     using Const = ConstVariantFieldClassOption;
2014     using NonConst = VariantFieldClassOption;
2015 };
2016
2017 template <>
2018 struct TypeDescr<VariantFieldClassOption> : public VariantFieldClassOptionTypeDescr
2019 {
2020 };
2021
2022 template <>
2023 struct TypeDescr<ConstVariantFieldClassOption> : public VariantFieldClassOptionTypeDescr
2024 {
2025 };
2026
2027 template <typename LibObjT>
2028 struct ConstVariantWithIntegerSelectorFieldClassOptionSpec;
2029
2030 /* Functions specific to variant field class options with unsigned integer selector */
2031 template <>
2032 struct ConstVariantWithIntegerSelectorFieldClassOptionSpec<
2033     const bt_field_class_variant_with_selector_field_integer_unsigned_option>
2034     final
2035 {
2036     static const bt_integer_range_set_unsigned *
2037     ranges(const bt_field_class_variant_with_selector_field_integer_unsigned_option
2038                * const libObjPtr) noexcept
2039     {
2040         return bt_field_class_variant_with_selector_field_integer_unsigned_option_borrow_ranges_const(
2041             libObjPtr);
2042     }
2043
2044     static const bt_field_class_variant_option *
2045     asBaseOption(const bt_field_class_variant_with_selector_field_integer_unsigned_option
2046                      * const libObjPtr) noexcept
2047     {
2048         return bt_field_class_variant_with_selector_field_integer_unsigned_option_as_option_const(
2049             libObjPtr);
2050     }
2051 };
2052
2053 /* Functions specific to variant field class options with signed integer selector */
2054 template <>
2055 struct ConstVariantWithIntegerSelectorFieldClassOptionSpec<
2056     const bt_field_class_variant_with_selector_field_integer_signed_option>
2057     final
2058 {
2059     static const bt_integer_range_set_signed *
2060     ranges(const bt_field_class_variant_with_selector_field_integer_signed_option
2061                * const libObjPtr) noexcept
2062     {
2063         return bt_field_class_variant_with_selector_field_integer_signed_option_borrow_ranges_const(
2064             libObjPtr);
2065     }
2066
2067     static const bt_field_class_variant_option *
2068     asBaseOption(const bt_field_class_variant_with_selector_field_integer_signed_option
2069                      * const libObjPtr) noexcept
2070     {
2071         return bt_field_class_variant_with_selector_field_integer_signed_option_as_option_const(
2072             libObjPtr);
2073     }
2074 };
2075
2076 } /* namespace internal */
2077
2078 template <typename LibObjT>
2079 class ConstVariantWithIntegerSelectorFieldClassOption : public BorrowedObj<LibObjT>
2080 {
2081 private:
2082     using typename BorrowedObj<LibObjT>::_ThisBorrowedObj;
2083     using typename BorrowedObj<LibObjT>::_LibObjPtr;
2084     using _Spec = internal::ConstVariantWithIntegerSelectorFieldClassOptionSpec<LibObjT>;
2085
2086 public:
2087     using RangeSet = typename std::conditional<
2088         std::is_same<
2089             LibObjT,
2090             const bt_field_class_variant_with_selector_field_integer_unsigned_option>::value,
2091         ConstUnsignedIntegerRangeSet, ConstSignedIntegerRangeSet>::type;
2092
2093     explicit ConstVariantWithIntegerSelectorFieldClassOption(const _LibObjPtr libObjPtr) noexcept :
2094         _ThisBorrowedObj {libObjPtr}
2095     {
2096     }
2097
2098     template <typename OtherLibObjT>
2099     ConstVariantWithIntegerSelectorFieldClassOption(
2100         const ConstVariantWithIntegerSelectorFieldClassOption<OtherLibObjT> fc) noexcept :
2101         _ThisBorrowedObj {fc}
2102     {
2103     }
2104
2105     template <typename OtherLibObjT>
2106     ConstVariantWithIntegerSelectorFieldClassOption&
2107     operator=(const ConstVariantWithIntegerSelectorFieldClassOption<OtherLibObjT> fc) noexcept
2108     {
2109         _ThisBorrowedObj::operator=(fc);
2110         return *this;
2111     }
2112
2113     ConstVariantFieldClassOption asBaseOption() const noexcept
2114     {
2115         return ConstVariantFieldClassOption {_Spec::asBaseOption(this->libObjPtr())};
2116     }
2117
2118     nonstd::optional<bpstd::string_view> name() const noexcept
2119     {
2120         return this->asBaseOption().name();
2121     }
2122
2123     ConstFieldClass fieldClass() const noexcept
2124     {
2125         return this->asBaseOption().fieldClass();
2126     }
2127
2128     RangeSet ranges() const noexcept
2129     {
2130         return RangeSet {_Spec::ranges(this->libObjPtr())};
2131     }
2132 };
2133
2134 using ConstVariantWithUnsignedIntegerSelectorFieldClassOption =
2135     ConstVariantWithIntegerSelectorFieldClassOption<
2136         const bt_field_class_variant_with_selector_field_integer_unsigned_option>;
2137
2138 using ConstVariantWithSignedIntegerSelectorFieldClassOption =
2139     ConstVariantWithIntegerSelectorFieldClassOption<
2140         const bt_field_class_variant_with_selector_field_integer_signed_option>;
2141
2142 namespace internal {
2143
2144 template <typename LibObjT>
2145 struct CommonVariantFieldClassSpec;
2146
2147 /* Functions specific to mutable variant field classes */
2148 template <>
2149 struct CommonVariantFieldClassSpec<bt_field_class> final
2150 {
2151     static bt_field_class_variant_option *optionByIndex(bt_field_class * const libObjPtr,
2152                                                         const std::uint64_t index) noexcept
2153     {
2154         return bt_field_class_variant_borrow_option_by_index(libObjPtr, index);
2155     }
2156
2157     static bt_field_class_variant_option *optionByName(bt_field_class * const libObjPtr,
2158                                                        const char * const name) noexcept
2159     {
2160         return bt_field_class_variant_borrow_option_by_name(libObjPtr, name);
2161     }
2162 };
2163
2164 /* Functions specific to constant variant field classes */
2165 template <>
2166 struct CommonVariantFieldClassSpec<const bt_field_class> final
2167 {
2168     static const bt_field_class_variant_option *
2169     optionByIndex(const bt_field_class * const libObjPtr, const std::uint64_t index) noexcept
2170     {
2171         return bt_field_class_variant_borrow_option_by_index_const(libObjPtr, index);
2172     }
2173
2174     static const bt_field_class_variant_option *optionByName(const bt_field_class * const libObjPtr,
2175                                                              const char * const name) noexcept
2176     {
2177         return bt_field_class_variant_borrow_option_by_name_const(libObjPtr, name);
2178     }
2179 };
2180
2181 } /* namespace internal */
2182
2183 template <typename LibObjT>
2184 class CommonVariantFieldClass : public CommonFieldClass<LibObjT>
2185 {
2186 private:
2187     using typename CommonFieldClass<LibObjT>::_ThisCommonFieldClass;
2188
2189 protected:
2190     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
2191     using _ThisCommonVariantFieldClass = CommonVariantFieldClass<LibObjT>;
2192
2193 public:
2194     using Shared = internal::SharedFieldClass<CommonVariantFieldClass<LibObjT>, LibObjT>;
2195
2196     using Option =
2197         typename std::conditional<std::is_const<LibObjT>::value, ConstVariantFieldClassOption,
2198                                   VariantFieldClassOption>::type;
2199
2200     using Iterator = CommonIterator<CommonVariantFieldClass, Option>;
2201
2202     explicit CommonVariantFieldClass(const _LibObjPtr libObjPtr) noexcept :
2203         _ThisCommonFieldClass {libObjPtr}
2204     {
2205         BT_ASSERT_DBG(this->isVariant());
2206     }
2207
2208     template <typename OtherLibObjT>
2209     CommonVariantFieldClass(const CommonVariantFieldClass<OtherLibObjT> fc) noexcept :
2210         _ThisCommonFieldClass {fc}
2211     {
2212     }
2213
2214     template <typename OtherLibObjT>
2215     CommonVariantFieldClass& operator=(const CommonVariantFieldClass<OtherLibObjT> fc) noexcept
2216     {
2217         _ThisCommonFieldClass::operator=(fc);
2218         return *this;
2219     }
2220
2221     std::uint64_t size() const noexcept
2222     {
2223         return bt_field_class_variant_get_option_count(this->libObjPtr());
2224     }
2225
2226     Iterator begin() const noexcept
2227     {
2228         return Iterator {*this, 0};
2229     }
2230
2231     Iterator end() const noexcept
2232     {
2233         return Iterator {*this, this->size()};
2234     }
2235
2236     ConstVariantFieldClassOption operator[](const std::uint64_t index) const noexcept
2237     {
2238         return ConstVariantFieldClassOption {
2239             internal::CommonVariantFieldClassSpec<const bt_field_class>::optionByIndex(
2240                 this->libObjPtr(), index)};
2241     }
2242
2243     Option operator[](const std::uint64_t index) noexcept
2244     {
2245         return Option {internal::CommonVariantFieldClassSpec<LibObjT>::optionByIndex(
2246             this->libObjPtr(), index)};
2247     }
2248
2249     nonstd::optional<ConstVariantFieldClassOption>
2250     operator[](const char * const name) const noexcept
2251     {
2252         const auto libObjPtr =
2253             internal::CommonVariantFieldClassSpec<const bt_field_class>::optionByName(
2254                 this->libObjPtr(), name);
2255
2256         if (libObjPtr) {
2257             return ConstVariantFieldClassOption {libObjPtr};
2258         }
2259
2260         return nonstd::nullopt;
2261     }
2262
2263     nonstd::optional<ConstVariantFieldClassOption>
2264     operator[](const std::string& name) const noexcept
2265     {
2266         return (*this)[name.data()];
2267     }
2268
2269     nonstd::optional<Option> operator[](const char * const name) noexcept
2270     {
2271         const auto libObjPtr =
2272             internal::CommonVariantFieldClassSpec<LibObjT>::optionByName(this->libObjPtr(), name);
2273
2274         if (libObjPtr) {
2275             return Option {libObjPtr};
2276         }
2277
2278         return nonstd::nullopt;
2279     }
2280
2281     nonstd::optional<Option> operator[](const std::string& name) noexcept
2282     {
2283         return (*this)[name.data()];
2284     }
2285
2286     Shared shared() const noexcept
2287     {
2288         return Shared::createWithRef(*this);
2289     }
2290 };
2291
2292 using VariantFieldClass = CommonVariantFieldClass<bt_field_class>;
2293 using ConstVariantFieldClass = CommonVariantFieldClass<const bt_field_class>;
2294
2295 namespace internal {
2296
2297 struct VariantFieldClassTypeDescr
2298 {
2299     using Const = ConstVariantFieldClass;
2300     using NonConst = VariantFieldClass;
2301 };
2302
2303 template <>
2304 struct TypeDescr<VariantFieldClass> : public VariantFieldClassTypeDescr
2305 {
2306 };
2307
2308 template <>
2309 struct TypeDescr<ConstVariantFieldClass> : public VariantFieldClassTypeDescr
2310 {
2311 };
2312
2313 } /* namespace internal */
2314
2315 template <typename LibObjT>
2316 class CommonVariantWithoutSelectorFieldClass : public CommonVariantFieldClass<LibObjT>
2317 {
2318 private:
2319     using typename CommonVariantFieldClass<LibObjT>::_ThisCommonVariantFieldClass;
2320     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
2321
2322 public:
2323     using Shared =
2324         internal::SharedFieldClass<CommonVariantWithoutSelectorFieldClass<LibObjT>, LibObjT>;
2325
2326     explicit CommonVariantWithoutSelectorFieldClass(const _LibObjPtr libObjPtr) noexcept :
2327         _ThisCommonVariantFieldClass {libObjPtr}
2328     {
2329         BT_ASSERT_DBG(this->isVariantWithoutSelector());
2330     }
2331
2332     template <typename OtherLibObjT>
2333     CommonVariantWithoutSelectorFieldClass(
2334         const CommonVariantWithoutSelectorFieldClass<OtherLibObjT> fc) noexcept :
2335         _ThisCommonVariantFieldClass {fc}
2336     {
2337     }
2338
2339     template <typename OtherLibObjT>
2340     CommonVariantWithoutSelectorFieldClass&
2341     operator=(const CommonVariantWithoutSelectorFieldClass<OtherLibObjT> fc) noexcept
2342     {
2343         _ThisCommonVariantFieldClass::operator=(fc);
2344         return *this;
2345     }
2346
2347     void appendOption(const char * const name, const FieldClass fc)
2348     {
2349         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
2350
2351         const auto status = bt_field_class_variant_without_selector_append_option(
2352             this->libObjPtr(), name, fc.libObjPtr());
2353
2354         if (status ==
2355             BT_FIELD_CLASS_VARIANT_WITHOUT_SELECTOR_FIELD_APPEND_OPTION_STATUS_MEMORY_ERROR) {
2356             throw MemoryError {};
2357         }
2358     }
2359
2360     void appendOption(const nonstd::optional<std::string>& name, const FieldClass fc)
2361     {
2362         this->appendOption(name ? name->data() : nullptr, fc);
2363     }
2364
2365     Shared shared() const noexcept
2366     {
2367         return Shared::createWithRef(*this);
2368     }
2369 };
2370
2371 using VariantWithoutSelectorFieldClass = CommonVariantWithoutSelectorFieldClass<bt_field_class>;
2372 using ConstVariantWithoutSelectorFieldClass =
2373     CommonVariantWithoutSelectorFieldClass<const bt_field_class>;
2374
2375 namespace internal {
2376
2377 struct VariantWithoutSelectorFieldClassTypeDescr
2378 {
2379     using Const = ConstVariantWithoutSelectorFieldClass;
2380     using NonConst = VariantWithoutSelectorFieldClass;
2381 };
2382
2383 template <>
2384 struct TypeDescr<VariantWithoutSelectorFieldClass> :
2385     public VariantWithoutSelectorFieldClassTypeDescr
2386 {
2387 };
2388
2389 template <>
2390 struct TypeDescr<ConstVariantWithoutSelectorFieldClass> :
2391     public VariantWithoutSelectorFieldClassTypeDescr
2392 {
2393 };
2394
2395 template <typename OptionT>
2396 struct CommonVariantWithIntegerSelectorFieldClassSpec;
2397
2398 /* Functions specific to variant field classes with unsigned integer selector */
2399 template <>
2400 struct CommonVariantWithIntegerSelectorFieldClassSpec<
2401     ConstVariantWithUnsignedIntegerSelectorFieldClassOption>
2402     final
2403 {
2404     static const bt_field_class_variant_with_selector_field_integer_unsigned_option *
2405     optionByIndex(const bt_field_class * const libObjPtr, const std::uint64_t index) noexcept
2406     {
2407         return bt_field_class_variant_with_selector_field_integer_unsigned_borrow_option_by_index_const(
2408             libObjPtr, index);
2409     }
2410
2411     static const bt_field_class_variant_with_selector_field_integer_unsigned_option *
2412     optionByName(const bt_field_class * const libObjPtr, const char * const name) noexcept
2413     {
2414         return bt_field_class_variant_with_selector_field_integer_unsigned_borrow_option_by_name_const(
2415             libObjPtr, name);
2416     }
2417
2418     static bt_field_class_variant_with_selector_field_integer_append_option_status
2419     appendOption(bt_field_class * const libObjPtr, const char * const name,
2420                  bt_field_class * const libOptFcPtr,
2421                  const bt_integer_range_set_unsigned * const libRangesPtr)
2422     {
2423         return bt_field_class_variant_with_selector_field_integer_unsigned_append_option(
2424             libObjPtr, name, libOptFcPtr, libRangesPtr);
2425     }
2426 };
2427
2428 /* Functions specific to variant field classes with signed integer selector */
2429 template <>
2430 struct CommonVariantWithIntegerSelectorFieldClassSpec<
2431     ConstVariantWithSignedIntegerSelectorFieldClassOption>
2432     final
2433 {
2434     static const bt_field_class_variant_with_selector_field_integer_signed_option *
2435     optionByIndex(const bt_field_class * const libObjPtr, const std::uint64_t index) noexcept
2436     {
2437         return bt_field_class_variant_with_selector_field_integer_signed_borrow_option_by_index_const(
2438             libObjPtr, index);
2439     }
2440
2441     static const bt_field_class_variant_with_selector_field_integer_signed_option *
2442     optionByName(const bt_field_class * const libObjPtr, const char * const name) noexcept
2443     {
2444         return bt_field_class_variant_with_selector_field_integer_signed_borrow_option_by_name_const(
2445             libObjPtr, name);
2446     }
2447
2448     static bt_field_class_variant_with_selector_field_integer_append_option_status
2449     appendOption(bt_field_class * const libObjPtr, const char * const name,
2450                  bt_field_class * const libOptFcPtr,
2451                  const bt_integer_range_set_signed * const libRangesPtr)
2452     {
2453         return bt_field_class_variant_with_selector_field_integer_signed_append_option(
2454             libObjPtr, name, libOptFcPtr, libRangesPtr);
2455     }
2456 };
2457
2458 } /* namespace internal */
2459
2460 template <typename LibObjT>
2461 class CommonVariantWithSelectorFieldClass : public CommonVariantFieldClass<LibObjT>
2462 {
2463 private:
2464     using typename CommonVariantFieldClass<LibObjT>::_ThisCommonVariantFieldClass;
2465
2466 protected:
2467     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
2468     using _ThisCommonVariantWithSelectorFieldClass = CommonVariantWithSelectorFieldClass<LibObjT>;
2469
2470 public:
2471     using Shared = internal::SharedFieldClass<_ThisCommonVariantWithSelectorFieldClass, LibObjT>;
2472
2473     explicit CommonVariantWithSelectorFieldClass(const _LibObjPtr libObjPtr) noexcept :
2474         _ThisCommonVariantFieldClass {libObjPtr}
2475     {
2476         BT_ASSERT_DBG(this->isVariantWithSelector());
2477     }
2478
2479     template <typename OtherLibObjT>
2480     CommonVariantWithSelectorFieldClass(
2481         const CommonVariantWithSelectorFieldClass<OtherLibObjT> fc) noexcept :
2482         _ThisCommonVariantFieldClass {fc}
2483     {
2484     }
2485
2486     template <typename OtherLibObjT>
2487     CommonVariantWithSelectorFieldClass&
2488     operator=(const CommonVariantWithSelectorFieldClass<OtherLibObjT> fc) noexcept
2489     {
2490         _ThisCommonVariantFieldClass::operator=(fc);
2491         return *this;
2492     }
2493
2494     ConstFieldPath selectorFieldPath() const noexcept
2495     {
2496         return ConstFieldPath {
2497             bt_field_class_variant_with_selector_field_borrow_selector_field_path_const(
2498                 this->libObjPtr())};
2499     }
2500
2501     Shared shared() const noexcept
2502     {
2503         return Shared::createWithRef(*this);
2504     }
2505 };
2506
2507 using VariantWithSelectorFieldClass = CommonVariantWithSelectorFieldClass<bt_field_class>;
2508 using ConstVariantWithSelectorFieldClass =
2509     CommonVariantWithSelectorFieldClass<const bt_field_class>;
2510
2511 template <typename LibObjT, typename OptionT>
2512 class CommonVariantWithIntegerSelectorFieldClass :
2513     public CommonVariantWithSelectorFieldClass<LibObjT>
2514 {
2515 private:
2516     using typename CommonVariantWithSelectorFieldClass<
2517         LibObjT>::_ThisCommonVariantWithSelectorFieldClass;
2518     using typename CommonFieldClass<LibObjT>::_LibObjPtr;
2519     using _ThisCommonVariantWithIntegerSelectorFieldClass =
2520         CommonVariantWithIntegerSelectorFieldClass<LibObjT, OptionT>;
2521
2522     using _Spec = internal::CommonVariantWithIntegerSelectorFieldClassSpec<OptionT>;
2523
2524 public:
2525     using Shared =
2526         internal::SharedFieldClass<_ThisCommonVariantWithIntegerSelectorFieldClass, LibObjT>;
2527
2528     using Option = OptionT;
2529     using Iterator =
2530         CommonIterator<CommonVariantWithIntegerSelectorFieldClass<LibObjT, Option>, Option>;
2531
2532     explicit CommonVariantWithIntegerSelectorFieldClass(const _LibObjPtr libObjPtr) noexcept :
2533         _ThisCommonVariantWithSelectorFieldClass {libObjPtr}
2534     {
2535         BT_ASSERT_DBG(this->isVariant());
2536     }
2537
2538     template <typename OtherLibObjT>
2539     CommonVariantWithIntegerSelectorFieldClass(
2540         const CommonVariantWithIntegerSelectorFieldClass<OtherLibObjT, OptionT> fc) noexcept :
2541         _ThisCommonVariantWithSelectorFieldClass {fc}
2542     {
2543     }
2544
2545     template <typename OtherLibObjT>
2546     CommonVariantWithIntegerSelectorFieldClass&
2547     operator=(const CommonVariantWithIntegerSelectorFieldClass<OtherLibObjT, OptionT> fc) noexcept
2548     {
2549         _ThisCommonVariantWithSelectorFieldClass::operator=(fc);
2550         return *this;
2551     }
2552
2553     Option operator[](const std::uint64_t index) const noexcept
2554     {
2555         return Option {_Spec::optionByIndex(this->libObjPtr(), index)};
2556     }
2557
2558     nonstd::optional<Option> operator[](const char * const name) const noexcept
2559     {
2560         const auto libObjPtr = _Spec::optionByName(this->libObjPtr(), name);
2561
2562         if (libObjPtr) {
2563             return Option {libObjPtr};
2564         }
2565
2566         return nonstd::nullopt;
2567     }
2568
2569     nonstd::optional<Option> operator[](const std::string& name) const noexcept
2570     {
2571         return (*this)[name.data()];
2572     }
2573
2574     void appendOption(const char * const name, const FieldClass fc,
2575                       const typename Option::RangeSet ranges)
2576     {
2577         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
2578
2579         const auto status =
2580             _Spec::appendOption(this->libObjPtr(), name, fc.libObjPtr(), ranges.libObjPtr());
2581
2582         if (status ==
2583             BT_FIELD_CLASS_VARIANT_WITH_SELECTOR_FIELD_APPEND_OPTION_STATUS_MEMORY_ERROR) {
2584             throw MemoryError {};
2585         }
2586     }
2587
2588     void appendOption(const nonstd::optional<std::string>& name, const FieldClass fc,
2589                       const typename Option::RangeSet ranges)
2590     {
2591         this->appendOption(name ? name->data() : nullptr, fc, ranges);
2592     }
2593
2594     Iterator begin() const noexcept
2595     {
2596         return Iterator {*this, 0};
2597     }
2598
2599     Iterator end() const noexcept
2600     {
2601         return Iterator {*this, this->size()};
2602     }
2603
2604     Shared shared() const noexcept
2605     {
2606         return Shared::createWithRef(*this);
2607     }
2608 };
2609
2610 using VariantWithUnsignedIntegerSelectorFieldClass = CommonVariantWithIntegerSelectorFieldClass<
2611     bt_field_class, ConstVariantWithUnsignedIntegerSelectorFieldClassOption>;
2612
2613 using ConstVariantWithUnsignedIntegerSelectorFieldClass =
2614     CommonVariantWithIntegerSelectorFieldClass<
2615         const bt_field_class, ConstVariantWithUnsignedIntegerSelectorFieldClassOption>;
2616
2617 using VariantWithSignedIntegerSelectorFieldClass = CommonVariantWithIntegerSelectorFieldClass<
2618     bt_field_class, ConstVariantWithSignedIntegerSelectorFieldClassOption>;
2619
2620 using ConstVariantWithSignedIntegerSelectorFieldClass = CommonVariantWithIntegerSelectorFieldClass<
2621     const bt_field_class, ConstVariantWithSignedIntegerSelectorFieldClassOption>;
2622
2623 namespace internal {
2624
2625 struct VariantWithUnsignedIntegerSelectorFieldClassTypeDescr
2626 {
2627     using Const = ConstVariantWithUnsignedIntegerSelectorFieldClass;
2628     using NonConst = VariantWithUnsignedIntegerSelectorFieldClass;
2629 };
2630
2631 template <>
2632 struct TypeDescr<VariantWithUnsignedIntegerSelectorFieldClass> :
2633     public VariantWithUnsignedIntegerSelectorFieldClassTypeDescr
2634 {
2635 };
2636
2637 template <>
2638 struct TypeDescr<ConstVariantWithUnsignedIntegerSelectorFieldClass> :
2639     public VariantWithUnsignedIntegerSelectorFieldClassTypeDescr
2640 {
2641 };
2642
2643 struct VariantWithSignedIntegerSelectorFieldClassTypeDescr
2644 {
2645     using Const = ConstVariantWithSignedIntegerSelectorFieldClass;
2646     using NonConst = VariantWithSignedIntegerSelectorFieldClass;
2647 };
2648
2649 template <>
2650 struct TypeDescr<VariantWithSignedIntegerSelectorFieldClass> :
2651     public VariantWithSignedIntegerSelectorFieldClassTypeDescr
2652 {
2653 };
2654
2655 template <>
2656 struct TypeDescr<ConstVariantWithSignedIntegerSelectorFieldClass> :
2657     public VariantWithSignedIntegerSelectorFieldClassTypeDescr
2658 {
2659 };
2660
2661 } /* namespace internal */
2662
2663 template <typename LibObjT>
2664 CommonBitArrayFieldClass<LibObjT> CommonFieldClass<LibObjT>::asBitArray() const noexcept
2665 {
2666     BT_ASSERT_DBG(this->isBitArray());
2667     return CommonBitArrayFieldClass<LibObjT> {this->libObjPtr()};
2668 }
2669
2670 template <typename LibObjT>
2671 CommonIntegerFieldClass<LibObjT> CommonFieldClass<LibObjT>::asInteger() const noexcept
2672 {
2673     BT_ASSERT_DBG(this->isInteger());
2674     return CommonIntegerFieldClass<LibObjT> {this->libObjPtr()};
2675 }
2676
2677 template <typename LibObjT>
2678 CommonBaseEnumerationFieldClass<LibObjT> CommonFieldClass<LibObjT>::asEnumeration() const noexcept
2679 {
2680     BT_ASSERT_DBG(this->isEnumeration());
2681     return CommonBaseEnumerationFieldClass<LibObjT> {this->libObjPtr()};
2682 }
2683
2684 template <typename LibObjT>
2685 CommonEnumerationFieldClass<LibObjT, ConstUnsignedEnumerationFieldClassMapping>
2686 CommonFieldClass<LibObjT>::asUnsignedEnumeration() const noexcept
2687 {
2688     BT_ASSERT_DBG(this->isUnsignedEnumeration());
2689     return CommonEnumerationFieldClass<LibObjT, ConstUnsignedEnumerationFieldClassMapping> {
2690         this->libObjPtr()};
2691 }
2692
2693 template <typename LibObjT>
2694 CommonEnumerationFieldClass<LibObjT, ConstSignedEnumerationFieldClassMapping>
2695 CommonFieldClass<LibObjT>::asSignedEnumeration() const noexcept
2696 {
2697     BT_ASSERT_DBG(this->isSignedEnumeration());
2698     return CommonEnumerationFieldClass<LibObjT, ConstSignedEnumerationFieldClassMapping> {
2699         this->libObjPtr()};
2700 }
2701
2702 template <typename LibObjT>
2703 CommonStructureFieldClass<LibObjT> CommonFieldClass<LibObjT>::asStructure() const noexcept
2704 {
2705     BT_ASSERT_DBG(this->isStructure());
2706     return CommonStructureFieldClass<LibObjT> {this->libObjPtr()};
2707 }
2708
2709 template <typename LibObjT>
2710 CommonArrayFieldClass<LibObjT> CommonFieldClass<LibObjT>::asArray() const noexcept
2711 {
2712     BT_ASSERT_DBG(this->isArray());
2713     return CommonArrayFieldClass<LibObjT> {this->libObjPtr()};
2714 }
2715
2716 template <typename LibObjT>
2717 CommonStaticArrayFieldClass<LibObjT> CommonFieldClass<LibObjT>::asStaticArray() const noexcept
2718 {
2719     BT_ASSERT_DBG(this->isStaticArray());
2720     return CommonStaticArrayFieldClass<LibObjT> {this->libObjPtr()};
2721 }
2722
2723 template <typename LibObjT>
2724 CommonDynamicArrayWithLengthFieldClass<LibObjT>
2725 CommonFieldClass<LibObjT>::asDynamicArrayWithLength() const noexcept
2726 {
2727     BT_ASSERT_DBG(this->isDynamicArrayWithLength());
2728     return CommonDynamicArrayWithLengthFieldClass<LibObjT> {this->libObjPtr()};
2729 }
2730
2731 template <typename LibObjT>
2732 CommonOptionFieldClass<LibObjT> CommonFieldClass<LibObjT>::asOption() const noexcept
2733 {
2734     BT_ASSERT_DBG(this->isOption());
2735     return CommonOptionFieldClass<LibObjT> {this->libObjPtr()};
2736 }
2737
2738 template <typename LibObjT>
2739 CommonOptionWithSelectorFieldClass<LibObjT>
2740 CommonFieldClass<LibObjT>::asOptionWithSelector() const noexcept
2741 {
2742     BT_ASSERT_DBG(this->isOptionWithSelector());
2743     return CommonOptionWithSelectorFieldClass<LibObjT> {this->libObjPtr()};
2744 }
2745
2746 template <typename LibObjT>
2747 CommonOptionWithBoolSelectorFieldClass<LibObjT>
2748 CommonFieldClass<LibObjT>::asOptionWithBoolSelector() const noexcept
2749 {
2750     BT_ASSERT_DBG(this->isOptionWithBoolSelector());
2751     return CommonOptionWithBoolSelectorFieldClass<LibObjT> {this->libObjPtr()};
2752 }
2753
2754 template <typename LibObjT>
2755 CommonOptionWithIntegerSelectorFieldClass<LibObjT, ConstUnsignedIntegerRangeSet>
2756 CommonFieldClass<LibObjT>::asOptionWithUnsignedIntegerSelector() const noexcept
2757 {
2758     BT_ASSERT_DBG(this->isOptionWithUnsignedIntegerSelector());
2759     return CommonOptionWithIntegerSelectorFieldClass<LibObjT, ConstUnsignedIntegerRangeSet> {
2760         this->libObjPtr()};
2761 }
2762
2763 template <typename LibObjT>
2764 CommonOptionWithIntegerSelectorFieldClass<LibObjT, ConstSignedIntegerRangeSet>
2765 CommonFieldClass<LibObjT>::asOptionWithSignedIntegerSelector() const noexcept
2766 {
2767     BT_ASSERT_DBG(this->isOptionWithSignedIntegerSelector());
2768     return CommonOptionWithIntegerSelectorFieldClass<LibObjT, ConstSignedIntegerRangeSet> {
2769         this->libObjPtr()};
2770 }
2771
2772 template <typename LibObjT>
2773 CommonVariantFieldClass<LibObjT> CommonFieldClass<LibObjT>::asVariant() const noexcept
2774 {
2775     BT_ASSERT_DBG(this->isVariant());
2776     return CommonVariantFieldClass<LibObjT> {this->libObjPtr()};
2777 }
2778
2779 template <typename LibObjT>
2780 CommonVariantWithoutSelectorFieldClass<LibObjT>
2781 CommonFieldClass<LibObjT>::asVariantWithoutSelector() const noexcept
2782 {
2783     BT_ASSERT_DBG(this->isVariantWithoutSelector());
2784     return CommonVariantWithoutSelectorFieldClass<LibObjT> {this->libObjPtr()};
2785 }
2786
2787 template <typename LibObjT>
2788 CommonVariantWithSelectorFieldClass<LibObjT>
2789 CommonFieldClass<LibObjT>::asVariantWithSelector() const noexcept
2790 {
2791     BT_ASSERT_DBG(this->isVariantWithSelector());
2792     return CommonVariantWithSelectorFieldClass<LibObjT> {this->libObjPtr()};
2793 }
2794
2795 template <typename LibObjT>
2796 CommonVariantWithIntegerSelectorFieldClass<LibObjT,
2797                                            ConstVariantWithUnsignedIntegerSelectorFieldClassOption>
2798 CommonFieldClass<LibObjT>::asVariantWithUnsignedIntegerSelector() const noexcept
2799 {
2800     BT_ASSERT_DBG(this->isVariantWithUnsignedIntegerSelector());
2801     return CommonVariantWithIntegerSelectorFieldClass<
2802         LibObjT, ConstVariantWithUnsignedIntegerSelectorFieldClassOption> {this->libObjPtr()};
2803 }
2804
2805 template <typename LibObjT>
2806 CommonVariantWithIntegerSelectorFieldClass<LibObjT,
2807                                            ConstVariantWithSignedIntegerSelectorFieldClassOption>
2808 CommonFieldClass<LibObjT>::asVariantWithSignedIntegerSelector() const noexcept
2809 {
2810     BT_ASSERT_DBG(this->isVariantWithSignedIntegerSelector());
2811     return CommonVariantWithIntegerSelectorFieldClass<
2812         LibObjT, ConstVariantWithSignedIntegerSelectorFieldClassOption> {this->libObjPtr()};
2813 }
2814
2815 } /* namespace bt2 */
2816
2817 #endif /* BABELTRACE_CPP_COMMON_BT2_FIELD_CLASS_HPP */