The literals-inlines.h File Reference

C++ header file with inline implementations for the µTest++ literals and type wrappers. More...

Included Headers

#include <cstdint>

Namespaces Index

namespace	micro_os_plus
	The primary namespace for the µOS++ framework. More...
namespace	micro_os_plus::micro_test_plus
	Primary namespace for the µTest++ testing framework. More...
namespace	micro_os_plus::micro_test_plus::literals
	User-defined literals and type wrappers for the µTest++ testing framework. More...

Operators Index

constexpr auto	operator""_b (const char *name, decltype(sizeof("")) size)
	User-defined literal operator to convert to bool. More...
template <char... Cs>
constexpr auto	operator""_c ()
	User-defined literal operator to convert to char. More...
template <char... Cs>
constexpr auto	operator""_d ()
	User-defined literal operator to convert to double. More...
template <char... Cs>
constexpr auto	operator""_f ()
	User-defined literal operator to convert to float. More...
template <char... Cs>
constexpr auto	operator""_i ()
	User-defined literal operator to convert to int. More...
template <char... Cs>
constexpr auto	operator""_i16 ()
	User-defined literal operator to convert to int16_t. More...
template <char... Cs>
constexpr auto	operator""_i32 ()
	User-defined literal operator to convert to int32_t. More...
template <char... Cs>
constexpr auto	operator""_i64 ()
	User-defined literal operator to convert to int64_t. More...
template <char... Cs>
constexpr auto	operator""_i8 ()
	User-defined literal operator to convert to int8_t. More...
template <char... Cs>
constexpr auto	operator""_l ()
	User-defined literal operator to convert to long. More...
template <char... Cs>
constexpr auto	operator""_ld ()
	User-defined literal operator to convert to long double. More...
template <char... Cs>
constexpr auto	operator""_ll ()
	User-defined literal operator to convert to long long. More...
template <char... Cs>
constexpr auto	operator""_s ()
	User-defined literal operator to convert to short. More...
template <char... Cs>
constexpr auto	operator""_sc ()
	User-defined literal operator to convert to signed char. More...
template <char... Cs>
constexpr auto	operator""_u ()
	User-defined literal operator to convert to unsigned. More...
template <char... Cs>
constexpr auto	operator""_u16 ()
	User-defined literal operator to convert to uint16_t. More...
template <char... Cs>
constexpr auto	operator""_u32 ()
	User-defined literal operator to convert to uint32_t. More...
template <char... Cs>
constexpr auto	operator""_u64 ()
	User-defined literal operator to convert to uint64_t. More...
template <char... Cs>
constexpr auto	operator""_u8 ()
	User-defined literal operator to convert to uint8_t. More...
template <char... Cs>
constexpr auto	operator""_uc ()
	User-defined literal operator to convert to unsigned char. More...
template <char... Cs>
constexpr auto	operator""_ul ()
	User-defined literal operator to convert to unsigned long. More...
template <char... Cs>
constexpr auto	operator""_ull ()
	User-defined literal operator to convert to unsigned long long. More...
template <char... Cs>
constexpr auto	operator""_us ()
	User-defined literal operator to convert to unsigned short. More...

Description

C++ header file with inline implementations for the µTest++ literals and type wrappers.

This header provides the inline implementations for the user-defined literal operators and type wrappers used within the µTest++ framework. It defines the logic for generating strongly-typed integral, floating-point, and boolean constants at compile time, enabling expressive and type-safe test expressions.

The implemented literal operators support a wide range of C++ fundamental types, allowing constants to be suffixed with type-specific identifiers (such as _i, _u16, _f, _d, _b, etc.) to produce values that integrate seamlessly with the µTest++ comparators and reporting mechanisms.

Specialised wrappers are provided for named boolean literals, supporting enhanced expressiveness and type safety in test conditions.

All definitions reside within the micro_os_plus::micro_test_plus::literals namespace, ensuring clear separation from user code and minimising the risk of naming conflicts.

The header files are organised within the include/micro-os-plus/micro-test-plus folder to maintain a structured and modular codebase.

This file is intended solely for internal use within the framework and should not be included directly by user code.

File Listing

The file content with the documentation metadata removed is:

1/*

2 * This file is part of the µOS++ project (https://micro-os-plus.github.io/).

3 * Copyright (c) 2021 Liviu Ionescu. All rights reserved.

4 *

5 * Permission to use, copy, modify, and/or distribute this software

6 * for any purpose is hereby granted, under the terms of the MIT license.

7 *

8 * If a copy of the license was not distributed with this file, it can

9 * be obtained from https://opensource.org/licenses/mit.

10 *

11 * Major parts of the code are inspired from v1.1.8 of the Boost UT project,

12 * released under the terms of the Boost Version 1 Software License,

13 * which can be obtained from https://www.boost.org/LICENSE_1_0.txt.

14 */

15

16// ----------------------------------------------------------------------------

17

49

50#ifndef MICRO_TEST_PLUS_LITERALS_INLINES_H_

51#define MICRO_TEST_PLUS_LITERALS_INLINES_H_

52

53// ----------------------------------------------------------------------------

54

55#ifdef __cplusplus

56

57// ----------------------------------------------------------------------------

58

59#include <cstdint>

60

61// #include "type-traits.h"

62

63// ----------------------------------------------------------------------------

64

65#if defined(__GNUC__)

66#pragma GCC diagnostic push

67#pragma GCC diagnostic ignored "-Waggregate-return"

68#if defined(__clang__)

69#pragma clang diagnostic ignored "-Wc++98-compat"

70#pragma clang diagnostic ignored "-Wc++98-compat-pedantic"

71#endif

72#endif

73

74namespace micro_os_plus::micro_test_plus

75{

76 // --------------------------------------------------------------------------

77

78 namespace literals

79 {

80

92 template <char... Cs>

93 [[nodiscard]] constexpr auto

94 operator""_i ()

95 {

96 return type_traits::integral_constant<math::num<int, Cs...> ()>{};

97 }

98

110 template <char... Cs>

111 [[nodiscard]] constexpr auto

112 operator""_s ()

113 {

114 return type_traits::integral_constant<math::num<short, Cs...> ()>{};

115 }

116

128 template <char... Cs>

129 [[nodiscard]] constexpr auto

130 operator""_c ()

131 {

132 return type_traits::integral_constant<math::num<char, Cs...> ()>{};

133 }

134

146 template <char... Cs>

147 [[nodiscard]] constexpr auto

148 operator""_sc ()

149 {

150 return type_traits::integral_constant<

151 math::num<signed char, Cs...> ()>{};

152 }

153

165 template <char... Cs>

166 [[nodiscard]] constexpr auto

167 operator""_l ()

168 {

169 return type_traits::integral_constant<math::num<long, Cs...> ()>{};

170 }

171

183 template <char... Cs>

184 [[nodiscard]] constexpr auto

185 operator""_ll ()

186 {

187 return type_traits::integral_constant<math::num<long long, Cs...> ()>{};

188 }

189

201 template <char... Cs>

202 [[nodiscard]] constexpr auto

203 operator""_u ()

204 {

205 return type_traits::integral_constant<math::num<unsigned, Cs...> ()>{};

206 }

207

219 template <char... Cs>

220 [[nodiscard]] constexpr auto

221 operator""_uc ()

222 {

223 return type_traits::integral_constant<

224 math::num<unsigned char, Cs...> ()>{};

225 }

226

238 template <char... Cs>

239 [[nodiscard]] constexpr auto

240 operator""_us ()

241 {

242 return type_traits::integral_constant<

243 math::num<unsigned short, Cs...> ()>{};

244 }

245

257 template <char... Cs>

258 [[nodiscard]] constexpr auto

259 operator""_ul ()

260 {

261 return type_traits::integral_constant<

262 math::num<unsigned long, Cs...> ()>{};

263 }

264

276 template <char... Cs>

277 [[nodiscard]] constexpr auto

278 operator""_ull ()

279 {

280 return type_traits::integral_constant<

281 math::num<unsigned long long, Cs...> ()>{};

282 }

283

295 template <char... Cs>

296 [[nodiscard]] constexpr auto

297 operator""_i8 ()

298 {

299 return type_traits::integral_constant<

300 math::num<std::int8_t, Cs...> ()>{};

301 }

302

314 template <char... Cs>

315 [[nodiscard]] constexpr auto

316 operator""_i16 ()

317 {

318 return type_traits::integral_constant<

319 math::num<std::int16_t, Cs...> ()>{};

320 }

321

333 template <char... Cs>

334 [[nodiscard]] constexpr auto

335 operator""_i32 ()

336 {

337 return type_traits::integral_constant<

338 math::num<std::int32_t, Cs...> ()>{};

339 }

340

352 template <char... Cs>

353 [[nodiscard]] constexpr auto

354 operator""_i64 ()

355 {

356 return type_traits::integral_constant<

357 math::num<std::int64_t, Cs...> ()>{};

358 }

359

371 template <char... Cs>

372 [[nodiscard]] constexpr auto

373 operator""_u8 ()

374 {

375 return type_traits::integral_constant<

376 math::num<std::uint8_t, Cs...> ()>{};

377 }

378

390 template <char... Cs>

391 [[nodiscard]] constexpr auto

392 operator""_u16 ()

393 {

394 return type_traits::integral_constant<

395 math::num<std::uint16_t, Cs...> ()>{};

396 }

397

409 template <char... Cs>

410 [[nodiscard]] constexpr auto

411 operator""_u32 ()

412 {

413 return type_traits::integral_constant<

414 math::num<std::uint32_t, Cs...> ()>{};

415 }

416

428 template <char... Cs>

429 [[nodiscard]] constexpr auto

430 operator""_u64 ()

431 {

432 return type_traits::integral_constant<

433 math::num<std::uint64_t, Cs...> ()>{};

434 }

435

447 template <char... Cs>

448 [[nodiscard]] constexpr auto

449 operator""_f ()

450 {

451 return type_traits::floating_point_constant<

452 float, math::num<unsigned long, Cs...> (),

453 math::den<unsigned long, Cs...> (),

454 math::den_size<unsigned long, Cs...> ()>{};

455 }

456

468 template <char... Cs>

469 [[nodiscard]] constexpr auto

470 operator""_d ()

471 {

472 return type_traits::floating_point_constant<

473 double, math::num<unsigned long, Cs...> (),

474 math::den<unsigned long, Cs...> (),

475 math::den_size<unsigned long, Cs...> ()>{};

476 }

477

489 template <char... Cs>

490 [[nodiscard]] constexpr auto

491 operator""_ld ()

492 {

493 return type_traits::floating_point_constant<

494 long double, math::num<unsigned long long, Cs...> (),

495 math::den<unsigned long long, Cs...> (),

496 math::den_size<unsigned long long, Cs...> ()>{};

497 }

498

517 constexpr auto

518 operator""_b (const char* name, decltype (sizeof ("")) size)

519 {

530 struct named : std::string_view, type_traits::op

531 {

535 using value_type = bool;

536

546 [[nodiscard]] constexpr

547 operator value_type () const

548 {

549 return true;

550 }

551

561 [[nodiscard]] constexpr auto

562 operator== (const named&) const

563 {

564 return true;

565 }

566

576 [[nodiscard]] constexpr auto

577 operator== (const bool other) const

578 {

579 return other;

580 }

581 };

582

583 return named{ { name, size }, {} };

584 }

585

586 // ------------------------------------------------------------------------

587 } // namespace literals

588

589 // --------------------------------------------------------------------------

590} // namespace micro_os_plus::micro_test_plus

591

592#if defined(__GNUC__)

593#pragma GCC diagnostic pop

594#endif

595

596// ----------------------------------------------------------------------------

597

598#endif // __cplusplus

599

600// ----------------------------------------------------------------------------

601

602#endif // MICRO_TEST_PLUS_LITERALS_INLINES_H_

603

604// ----------------------------------------------------------------------------

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