Commit Graph

10 Commits

Author SHA1 Message Date
Mark de Wever 207e7e4a70 [libc++[format][NFC] Removes dead code.
This removes a part of the now obsolete formater code.
The removal also removes the _v2 suffix where it's no longer needed.

Depends on D128785

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D128846
2022-07-07 08:00:43 +02:00
Mark de Wever 152d922295 [libc++][format] Improve floating-point formatters.
This changes the implementation of the formatter. Instead of inheriting
from a specialized parser all formatters will use the same generic
parser. This reduces the binary size.

The new parser contains some additional fields only used in the chrono
formatting. Since this doesn't change the size of the parser the fields
are in the generic parser. The parser is designed to fit in 128-bit,
making it cheap to pass by value.

The new format function is a const member function. This isn't required
by the Standard yet, but it will be after LWG-3636 is accepted.
Additionally P2286 adds a formattable concept which requires the member
function to be const qualified in C++23. This paper is likely to be
accepted in the 2022 July plenary.

This is based on D125606. That commit did the groundwork and did similar
changes for the string formatters.

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D128785
2022-07-07 08:00:05 +02:00
Mark de Wever 38adfa91a1 [libc++][format] Improve integral formatters.
This changes the implementation of the formatter. Instead of inheriting
from a specialized parser all formatters will use the same generic
parser. This reduces the binary size.

The new parser contains some additional fields only used in the chrono
formatting. Since this doesn't change the size of the parser the fields
are in the generic parser. The parser is designed to fit in 128-bit,
making it cheap to pass by value.

The new format function is a const member function. This isn't required
by the Standard yet, but it will be after LWG-3636 is accepted.
Additionally P2286 adds a formattable concept which requires the member
function to be const qualified in C++23. This paper is likely to be
accepted in the 2022 July plenary.

This is based on D125606. That commit did the groundwork and did similar
changes for the string formatters.

Depends on D125606

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D128139
2022-06-29 07:25:03 +02:00
Louis Dionne eebbfbcd50 [libc++][NFC] Add missing includes 2022-06-06 12:58:23 -04:00
Joe Loser d2baefae68
[libc++] Replace _LIBCPP_HAS_NO_CONCEPTS with _LIBCPP_STD_VER > 17. NFCI.
All supported compilers that support C++20 now support concepts. So, remove
`_LIB_LIBCPP_HAS_NO_CONCEPTS` in favor of `_LIBCPP_STD_VER > 17`. Similarly in
the tests, remove `// UNSUPPORTED: libcpp-no-concepts`.

Differential Revision: https://reviews.llvm.org/D121528
2022-03-13 12:32:06 -04:00
Louis Dionne 368faacac7 [libc++] Revert "Protect users from relying on detail headers" & related changes
This commit reverts 5aaefa51 (and also partly 7f285f48e7 and b6d75682f9,
which were related to the original commit). As landed, 5aaefa51 had
unintended consequences on some downstream bots and didn't have proper
coverage upstream due to a few subtle things. Implementing this is
something we should do in libc++, however we'll first need to address
a few issues listed in https://reviews.llvm.org/D106124#3349710.

Differential Revision: https://reviews.llvm.org/D120683
2022-03-01 08:20:24 -05:00
Christopher Di Bella 5aaefa510e [libcxx][modules] protects users from relying on detail headers
libc++ has started splicing standard library headers into much more
fine-grained content for maintainability. It's very likely that outdated
and naive tooling (some of which is outside of LLVM's scope) will
suggest users include things such as <__ranges/access.h> instead of
<ranges>, and Hyrum's law suggests that users will eventually begin to
rely on this without the help of tooling. As such, this commit
intends to protect users from themselves, by making it a hard error for
anyone outside of the standard library to include libc++ detail headers.

Differential Revision: https://reviews.llvm.org/D106124
2022-02-26 09:00:25 +00:00
Louis Dionne f87aa19be6 [libc++] Move everything related solely to _LIBCPP_ASSERT to its own file
This is the first step towards disentangling the debug mode and assertions
in libc++. This patch doesn't make any functional change: it simply moves
_LIBCPP_ASSERT-related stuff to its own file so as to make it clear that
libc++ assertions and the debug mode are different things. Future patches
will make it possible to enable assertions without enabling the debug
mode.

Differential Revision: https://reviews.llvm.org/D119769
2022-02-16 12:49:50 -05:00
Nikolas Klauser 2a8f9a5e95 [libc++] Implement P0627R6 (Function to mark unreachable code)
Reviewed By: ldionne, Quuxplusone, #libc

Spies: arichardson, mstorsjo, libcxx-commits, mgorny

Differential Revision: https://reviews.llvm.org/D119152
2022-02-14 20:52:51 +01:00
Mark de Wever db2944e34b [libc++][format] Adds formatter floating-point.
This properly implements the formatter for floating-point types.

Completes:
- P1652R1 Printf corner cases in std::format
- LWG 3250 std::format: # (alternate form) for NaN and inf
- LWG 3243 std::format and negative zeroes

Implements parts of:
- P0645 Text Formatting

Reviewed By: #libc, ldionne, vitaut

Differential Revision: https://reviews.llvm.org/D114001
2022-01-24 18:12:24 +01:00