Commit Graph

10 Commits

Author SHA1 Message Date
Joe Loser 3a208c6894
[libc++] Implement P1394r4 for span: range constructor
Implement https://wg21.link/p1394 which allows span to be constructible
from any contiguous forwarding-range that has a compatible element type.

Fixes https://bugs.llvm.org/show_bug.cgi?id=51443

Reviewed By: ldionne, Quuxplusone, #libc

Differential Revision: https://reviews.llvm.org/D110503
2021-10-08 17:00:39 -04:00
Mark de Wever 352c3af3ab [libc++][doc] Update paper status.
Update the status with the approved papers and LWG-issues in the October 2021 plenary.

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D111166
2021-10-08 20:22:44 +02:00
Mark de Wever 7fb9f99f3b [libc++][format] Adds bool formatter.
Implements the formatter for Boolean types.
[format.formatter.spec]/2.3
For each charT, for each cv-unqualified arithmetic type ArithmeticT other
than char, wchar_t, char8_t, char16_t, or char32_t, a specialization
```
  template<> struct formatter<ArithmeticT, charT>;
```
This removes the stub implemented in D96664.

Implements parts of:
- P0645 Text Formatting
- P1652 Printf corner cases in std::format

Completes:
- P1868 width: clarifying units of width and precision in std::format

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D103670
2021-10-07 17:17:27 +02:00
Mark de Wever 3e9689d72c [libc++][format] Adds integer formatter.
Implements the formatter for all fundamental integer types
(except `char`, `wchar_t`, and `bool`).
[format.formatter.spec]/2.3
For each charT, for each cv-unqualified arithmetic type ArithmeticT other
than char, wchar_t, char8_t, char16_t, or char32_t, a specialization
```
  template<> struct formatter<ArithmeticT, charT>;
```
This removes the stub implemented in D96664.

As an extension it adds partial support for 128-bit integer types.

Implements parts of:
- P0645 Text Formatting
- P1652 Printf corner cases in std::format

Completes:
- LWG-3248 #b, #B, #o, #x, and #X presentation types misformat negative numbers

Reviewed By: #libc, ldionne, vitaut

Differential Revision: https://reviews.llvm.org/D103433
2021-10-07 17:07:51 +02:00
Joe Loser 4be7f48960
[libc++] Implement P1391 for string_view
Implement P1391 (https://wg21.link/p1391) which allows
`std::string_view` to be constructible from any contiguous range of
characters.

Note that a different paper (http://wg21.link/P1989) handles the generic
range constructor for `std::string_view`.

Reviewed By: ldionne, Quuxplusone, Mordante, #libc

Differential Revision: https://reviews.llvm.org/D110718
2021-10-06 14:17:10 -04:00
Mark de Wever ac7031b2b2 [libc++][format] Implement Unicode support.
This adds the width estimation functions to the std-format-spec.

Implements parts of:
- P0645 Text Formatting
- P1868 width: clarifying units of width and precision in std::format

Reviewed By: #libc, ldionne, vitaut

Differential Revision: https://reviews.llvm.org/D103413
2021-10-02 11:57:40 +02:00
Mark de Wever a04a6ce772 [libc++][format] Adds parser std-format-spec.
This implements the generic std.format.spec framework for all types.

The Unicode support will be added in a separate patch.

Implements parts of:
- P0645 Text Formatting

Completes:
- LWG-3242 std::format: missing rules for arg-id in width and precision
- P1892 Extended locale-specific presentation specifiers for std::format

Reviewed By: #libc, ldionne, vitaut

Differential Revision: https://reviews.llvm.org/D103368
2021-09-21 18:29:58 +02:00
Louis Dionne b1fb3d75c9 [libc++] Implement C++20's P0476R2: std::bit_cast
Thanks to Arthur O'Dwyer for fixing up some of the tests.

Differential Revision: https://reviews.llvm.org/D75960
2021-09-09 11:05:54 -04:00
Mark de Wever a08554bcdd [libc++][doc] Fixes a broken link. 2021-07-20 19:49:45 +02:00
Louis Dionne cf005c4c50 [libc++] NFC: Move the status docs to their own subdirectory
This cleans up the libcxx/doc directory quite a bit and will avoid the
proliferation of status files in that directory as new standards are voted.
2021-07-06 09:48:34 -04:00