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[libc++] Implement format_error. This is the first step at implementing <format>. It adds the <format> header and implements the `format_error`. class. Implemnts parts of: -P0645 Text Formatting Reviewed By: ldionne, #libc, miscco, curdeius Differential Revision: https://reviews.llvm.org/D92214
2020-11-27 02:12:18 +08:00
// -*- C++ -*-
[runtimes][NFC] Remove filenames at the top of the license notice We've stopped doing it in libc++ for a while now because these names would end up rotting as we move things around and copy/paste stuff. This cleans up all the existing files so as to stop the spreading as people copy-paste headers around.
2021-11-18 05:25:01 +08:00
//===----------------------------------------------------------------------===//
[libc++] Implement format_error. This is the first step at implementing <format>. It adds the <format> header and implements the `format_error`. class. Implemnts parts of: -P0645 Text Formatting Reviewed By: ldionne, #libc, miscco, curdeius Differential Revision: https://reviews.llvm.org/D92214
2020-11-27 02:12:18 +08:00
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_FORMAT
#define _LIBCPP_FORMAT
/*
namespace std {
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
// [format.context], class template basic_format_context
[libc++][format] Finish P0645 Text Formatting. This adjust the version macro and sets it as completed. All parts of the paper have been implemented, except for the parts replaced by later papers and LWG-issues. Adjusted the synopsis to match the synopsis in the Standard. Not yet implemented parts of P2216 and P2418 still use the P0645 wording. Completes: - P0645 Text Formatting Depends on D115991 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D115999
2021-12-18 22:03:26 +08:00
template<class Out, class charT> class basic_format_context;
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
using format_context = basic_format_context<unspecified, char>;
using wformat_context = basic_format_context<unspecified, wchar_t>;
// [format.args], class template basic_format_args
[libc++][format] Finish P0645 Text Formatting. This adjust the version macro and sets it as completed. All parts of the paper have been implemented, except for the parts replaced by later papers and LWG-issues. Adjusted the synopsis to match the synopsis in the Standard. Not yet implemented parts of P2216 and P2418 still use the P0645 wording. Completes: - P0645 Text Formatting Depends on D115991 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D115999
2021-12-18 22:03:26 +08:00
template<class Context> class basic_format_args;
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
using format_args = basic_format_args<format_context>;
using wformat_args = basic_format_args<wformat_context>;
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
// [format.functions], formatting functions
template<class... Args>
string format(string_view fmt, const Args&... args);
template<class... Args>
wstring format(wstring_view fmt, const Args&... args);
template<class... Args>
string format(const locale& loc, string_view fmt, const Args&... args);
template<class... Args>
wstring format(const locale& loc, wstring_view fmt, const Args&... args);
string vformat(string_view fmt, format_args args);
wstring vformat(wstring_view fmt, wformat_args args);
string vformat(const locale& loc, string_view fmt, format_args args);
wstring vformat(const locale& loc, wstring_view fmt, wformat_args args);
template<class Out, class... Args>
Out format_to(Out out, string_view fmt, const Args&... args);
template<class Out, class... Args>
Out format_to(Out out, wstring_view fmt, const Args&... args);
template<class Out, class... Args>
Out format_to(Out out, const locale& loc, string_view fmt, const Args&... args);
template<class Out, class... Args>
Out format_to(Out out, const locale& loc, wstring_view fmt, const Args&... args);
template<class Out>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
Out vformat_to(Out out, string_view fmt, format_args args);
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template<class Out>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
Out vformat_to(Out out, wstring_view fmt, wformat_args args);
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template<class Out>
Out vformat_to(Out out, const locale& loc, string_view fmt,
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
format_args char> args);
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template<class Out>
Out vformat_to(Out out, const locale& loc, wstring_view fmt,
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
wformat_args args);
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template<class Out> struct format_to_n_result {
Out out;
iter_difference_t<Out> size;
};
[libc++][format] Finish P0645 Text Formatting. This adjust the version macro and sets it as completed. All parts of the paper have been implemented, except for the parts replaced by later papers and LWG-issues. Adjusted the synopsis to match the synopsis in the Standard. Not yet implemented parts of P2216 and P2418 still use the P0645 wording. Completes: - P0645 Text Formatting Depends on D115991 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D115999
2021-12-18 22:03:26 +08:00
template<class Out, class... Args>
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
string_view fmt, const Args&... args);
template<class Out, class... Args>
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
wstring_view fmt, const Args&... args);
template<class Out, class... Args>
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
const locale& loc, string_view fmt,
const Args&... args);
template<class Out, class... Args>
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
const locale& loc, wstring_view fmt,
const Args&... args);
template<class... Args>
size_t formatted_size(string_view fmt, const Args&... args);
template<class... Args>
size_t formatted_size(wstring_view fmt, const Args&... args);
template<class... Args>
size_t formatted_size(const locale& loc, string_view fmt, const Args&... args);
template<class... Args>
size_t formatted_size(const locale& loc, wstring_view fmt, const Args&... args);
// [format.formatter], formatter
[libc++][format] Finish P0645 Text Formatting. This adjust the version macro and sets it as completed. All parts of the paper have been implemented, except for the parts replaced by later papers and LWG-issues. Adjusted the synopsis to match the synopsis in the Standard. Not yet implemented parts of P2216 and P2418 still use the P0645 wording. Completes: - P0645 Text Formatting Depends on D115991 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D115999
2021-12-18 22:03:26 +08:00
template<class T, class charT = char> struct formatter;
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
// [format.parse.ctx], class template basic_format_parse_context
[libc++][format] Finish P0645 Text Formatting. This adjust the version macro and sets it as completed. All parts of the paper have been implemented, except for the parts replaced by later papers and LWG-issues. Adjusted the synopsis to match the synopsis in the Standard. Not yet implemented parts of P2216 and P2418 still use the P0645 wording. Completes: - P0645 Text Formatting Depends on D115991 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D115999
2021-12-18 22:03:26 +08:00
template<class charT> class basic_format_parse_context;
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
using format_parse_context = basic_format_parse_context<char>;
using wformat_parse_context = basic_format_parse_context<wchar_t>;
// [format.arguments], arguments
// [format.arg], class template basic_format_arg
[libc++][format] Finish P0645 Text Formatting. This adjust the version macro and sets it as completed. All parts of the paper have been implemented, except for the parts replaced by later papers and LWG-issues. Adjusted the synopsis to match the synopsis in the Standard. Not yet implemented parts of P2216 and P2418 still use the P0645 wording. Completes: - P0645 Text Formatting Depends on D115991 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D115999
2021-12-18 22:03:26 +08:00
template<class Context> class basic_format_arg;
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
template<class Visitor, class Context>
see below visit_format_arg(Visitor&& vis, basic_format_arg<Context> arg);
// [format.arg.store], class template format-arg-store
[libc++][format] Finish P0645 Text Formatting. This adjust the version macro and sets it as completed. All parts of the paper have been implemented, except for the parts replaced by later papers and LWG-issues. Adjusted the synopsis to match the synopsis in the Standard. Not yet implemented parts of P2216 and P2418 still use the P0645 wording. Completes: - P0645 Text Formatting Depends on D115991 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D115999
2021-12-18 22:03:26 +08:00
template<class Context, class... Args> struct format-arg-store; // exposition only
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
template<class Context = format_context, class... Args>
format-arg-store<Context, Args...>
make_format_args(const Args&... args);
template<class... Args>
format-arg-store<wformat_context, Args...>
make_wformat_args(const Args&... args);
[libc++] Implement format_error. This is the first step at implementing <format>. It adds the <format> header and implements the `format_error`. class. Implemnts parts of: -P0645 Text Formatting Reviewed By: ldionne, #libc, miscco, curdeius Differential Revision: https://reviews.llvm.org/D92214
2020-11-27 02:12:18 +08:00
// [format.error], class format_error
[libc++][format] Finish P0645 Text Formatting. This adjust the version macro and sets it as completed. All parts of the paper have been implemented, except for the parts replaced by later papers and LWG-issues. Adjusted the synopsis to match the synopsis in the Standard. Not yet implemented parts of P2216 and P2418 still use the P0645 wording. Completes: - P0645 Text Formatting Depends on D115991 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D115999
2021-12-18 22:03:26 +08:00
class format_error;
[libc++] Implement format_error. This is the first step at implementing <format>. It adds the <format> header and implements the `format_error`. class. Implemnts parts of: -P0645 Text Formatting Reviewed By: ldionne, #libc, miscco, curdeius Differential Revision: https://reviews.llvm.org/D92214
2020-11-27 02:12:18 +08:00
}
*/
[libc++][doc] Improve contributor documentation. Addresses the post-commit review comments of D107596.
2021-08-11 23:33:54 +08:00
// Make sure all feature-test macros are available.
[libc++] Improve LIBCXX_ENABLE_INCOMPLETE_FEATURES. @tcanens pointed out the current behavior of the macro breaks the usage pattern described in http://wg21.link/SD6 ``` # if __has_include(<optional>) # include <optional> # if __cpp_lib_optional >= 201606 # define have_optional 1 # endif ``` To support this usage pattern the hard errror is removed. Instead the header includes nothing but the `<version>` header. Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D107134
2021-07-31 02:35:37 +08:00
#include <version>
[libc++][doc] Improve contributor documentation. Addresses the post-commit review comments of D107596.
2021-08-11 23:33:54 +08:00
// Enable the contents of the header only when libc++ was built with LIBCXX_ENABLE_INCOMPLETE_FEATURES.
[libc++] Improve LIBCXX_ENABLE_INCOMPLETE_FEATURES. @tcanens pointed out the current behavior of the macro breaks the usage pattern described in http://wg21.link/SD6 ``` # if __has_include(<optional>) # include <optional> # if __cpp_lib_optional >= 201606 # define have_optional 1 # endif ``` To support this usage pattern the hard errror is removed. Instead the header includes nothing but the `<version>` header. Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D107134
2021-07-31 02:35:37 +08:00
#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT)
[libc++] Granularize algorithm includes Reviewed By: Mordante, ldionne, Quuxplusone, #libc, #libc_abi Spies: #libc_vendors, libcxx-commits, miyuki Differential Revision: https://reviews.llvm.org/D119667
2022-02-16 01:18:08 +08:00
#include <__algorithm/clamp.h>
[libc++] Implement format_error. This is the first step at implementing <format>. It adds the <format> header and implements the `format_error`. class. Implemnts parts of: -P0645 Text Formatting Reviewed By: ldionne, #libc, miscco, curdeius Differential Revision: https://reviews.llvm.org/D92214
2020-11-27 02:12:18 +08:00
#include <__config>
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
#include <__debug>
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
#include <__format/format_arg.h>
#include <__format/format_args.h>
#include <__format/format_context.h>
[libc++][NFC] Move format_error to its own header. Reviewed By: #libc, ldionne Differential Revision: https://reviews.llvm.org/D101723
2021-04-25 23:58:03 +08:00
#include <__format/format_error.h>
[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
2020-12-15 00:39:15 +08:00
#include <__format/format_fwd.h>
[libc++][NFC] Move basic_format_parse_context to its own header. This is a preparation to split the format header in smaller parts for the upcoming patches. Depends on D101723 Reviewed By: #libc, ldionne Differential Revision: https://reviews.llvm.org/D102703
2021-04-26 00:23:42 +08:00
#include <__format/format_parse_context.h>
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
#include <__format/format_string.h>
[libc++][NFC] Move format_to_n_result. Places `format_to_n_result` to its own file. While working on D112361 it turns out the type will be used outside the format header. Reviewed By: #libc, Quuxplusone, Mordante Differential Revision: https://reviews.llvm.org/D113831
2021-11-14 02:43:32 +08:00
#include <__format/format_to_n_result.h>
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
#include <__format/formatter.h>
[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
2020-12-15 00:39:15 +08:00
#include <__format/formatter_bool.h>
[libc++][format] Adds char formatter. Implements the formatter for all fundamental integer types. [format.formatter.spec]/2.1 The specializations ``` template<> struct formatter<char, char>; template<> struct formatter<char, wchar_t>; template<> struct formatter<wchar_t, wchar_t>; ``` This removes the stub implemented in D96664. Implements parts of: - P0645 Text Formatting Reviewed By: #libc, ldionne Differential Revision: https://reviews.llvm.org/D103466
2020-12-15 00:39:15 +08:00
#include <__format/formatter_char.h>
[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
2020-12-15 00:39:15 +08:00
#include <__format/formatter_floating_point.h>
[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
2020-12-15 00:39:15 +08:00
#include <__format/formatter_integer.h>
[libc++][format] Adds formatter pointer. This implements the last required formatter specialization. Completes: - LWG 3251 Are std::format alignment specifiers applied to string arguments? - LWG 3340 Formatting functions should throw on argument/format string mismatch in §[format.functions] - LWG 3540 §[format.arg] There should be no const in basic_format_arg(const T* p) Implements parts of: - P0645 Text Formatting Depends on D114001 Reviewed By: ldionne, vitaut, #libc Differential Revision: https://reviews.llvm.org/D115988
2021-11-28 21:43:43 +08:00
#include <__format/formatter_pointer.h>
[libc++][format] Adds string formatter. Implements the formatter for all string types. [format.formatter.spec]/2.2 For each charT, the string type specializations ``` template<> struct formatter<charT*, charT>; template<> struct formatter<const charT*, charT>; template<size_t N> struct formatter<const charT[N], charT>; template<class traits, class Allocator> struct formatter<basic_string<charT, traits, Allocator>, charT>; template<class traits> struct formatter<basic_string_view<charT, traits>, charT>; ``` This removes the stub implemented in D96664. 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/D103425
2020-12-15 00:39:15 +08:00
#include <__format/formatter_string.h>
#include <__format/parser_std_format_spec.h>
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
#include <__variant/monostate.h>
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
#include <array>
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
#include <concepts>
#include <string>
#include <string_view>
#include <type_traits>
#ifndef _LIBCPP_HAS_NO_LOCALIZATION
#include <locale>
#endif
[libc++] Disable incomplete library features. Adds a new CMake option to disable the usage of incomplete headers. These incomplete headers are not guaranteed to be ABI stable. This option is intended to be used by vendors so they can avoid their users from code that's not ready for production usage. The option is enabled by default. Differential Revision: https://reviews.llvm.org/D106763
2021-07-25 15:18:53 +08:00
[libc++] Implement format_error. This is the first step at implementing <format>. It adds the <format> header and implements the `format_error`. class. Implemnts parts of: -P0645 Text Formatting Reviewed By: ldionne, #libc, miscco, curdeius Differential Revision: https://reviews.llvm.org/D92214
2020-11-27 02:12:18 +08:00
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
[libc++] Normalize all our '#pragma GCC system_header', and regression-test. Now we'll notice if a header forgets to include this magic phrase. Differential Revision: https://reviews.llvm.org/D118800
2022-02-02 09:16:40 +08:00
# pragma GCC system_header
[libc++] Implement format_error. This is the first step at implementing <format>. It adds the <format> header and implements the `format_error`. class. Implemnts parts of: -P0645 Text Formatting Reviewed By: ldionne, #libc, miscco, curdeius Differential Revision: https://reviews.llvm.org/D92214
2020-11-27 02:12:18 +08:00
#endif
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER > 17
// TODO FMT Remove this once we require compilers with proper C++20 support.
// If the compiler has no concepts support, the format header will be disabled.
// Without concepts support enable_if needs to be used and that too much effort
// to support compilers with partial C++20 support.
#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
[libc++][doc] Add a todo. As suggested in D113831.
2021-11-16 22:55:17 +08:00
// TODO FMT Move the implementation in this file to its own granular headers.
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
// TODO FMT Evaluate which templates should be external templates. This
// improves the efficiency of the header. However since the header is still
// under heavy development and not all classes are stable it makes no sense
// to do this optimization now.
using format_args = basic_format_args<format_context>;
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
using wformat_args = basic_format_args<wformat_context>;
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
template <class _Context, class... _Args>
struct _LIBCPP_TEMPLATE_VIS __format_arg_store {
// TODO FMT Use a built-in array.
array<basic_format_arg<_Context>, sizeof...(_Args)> __args;
};
template <class _Context = format_context, class... _Args>
_LIBCPP_HIDE_FROM_ABI __format_arg_store<_Context, _Args...>
make_format_args(const _Args&... __args) {
return {basic_format_arg<_Context>(__args)...};
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI __format_arg_store<wformat_context, _Args...>
make_wformat_args(const _Args&... __args) {
return _VSTD::make_format_args<wformat_context>(__args...);
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
namespace __format {
template <class _CharT, class _ParseCtx, class _Ctx>
_LIBCPP_HIDE_FROM_ABI const _CharT*
__handle_replacement_field(const _CharT* __begin, const _CharT* __end,
_ParseCtx& __parse_ctx, _Ctx& __ctx) {
__format::__parse_number_result __r =
__format::__parse_arg_id(__begin, __end, __parse_ctx);
switch (*__r.__ptr) {
case _CharT(':'):
// The arg-id has a format-specifier, advance the input to the format-spec.
__parse_ctx.advance_to(__r.__ptr + 1);
break;
case _CharT('}'):
// The arg-id has no format-specifier.
__parse_ctx.advance_to(__r.__ptr);
break;
default:
__throw_format_error(
"The replacement field arg-id should terminate at a ':' or '}'");
}
_VSTD::visit_format_arg(
[&](auto __arg) {
if constexpr (same_as<decltype(__arg), monostate>)
__throw_format_error("Argument index out of bounds");
[libc++][format] Adds formatter handle. This implements the handler according to P0645. P2418 changes the wording in the Standard. That isn't implemented and requires changes in more places. LWG3631 applies modifications to P2418, but is currently unresolved. Implements parts of: * P0645 Text Formatting Depends on D115989 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D115991
2021-12-17 01:17:47 +08:00
else if constexpr (same_as<decltype(__arg), typename basic_format_arg<_Ctx>::handle>)
__arg.format(__parse_ctx, __ctx);
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
else {
formatter<decltype(__arg), _CharT> __formatter;
__parse_ctx.advance_to(__formatter.parse(__parse_ctx));
__ctx.advance_to(__formatter.format(__arg, __ctx));
}
},
__ctx.arg(__r.__value));
__begin = __parse_ctx.begin();
if (__begin == __end || *__begin != _CharT('}'))
__throw_format_error("The replacement field misses a terminating '}'");
return ++__begin;
}
template <class _ParseCtx, class _Ctx>
_LIBCPP_HIDE_FROM_ABI typename _Ctx::iterator
__vformat_to(_ParseCtx&& __parse_ctx, _Ctx&& __ctx) {
using _CharT = typename _ParseCtx::char_type;
static_assert(same_as<typename _Ctx::char_type, _CharT>);
const _CharT* __begin = __parse_ctx.begin();
const _CharT* __end = __parse_ctx.end();
typename _Ctx::iterator __out_it = __ctx.out();
while (__begin != __end) {
switch (*__begin) {
case _CharT('{'):
++__begin;
if (__begin == __end)
__throw_format_error("The format string terminates at a '{'");
if (*__begin != _CharT('{')) [[likely]] {
__ctx.advance_to(_VSTD::move(__out_it));
__begin =
__handle_replacement_field(__begin, __end, __parse_ctx, __ctx);
__out_it = __ctx.out();
// The output is written and __begin points to the next character. So
// start the next iteration.
continue;
}
// The string is an escape character.
break;
case _CharT('}'):
++__begin;
if (__begin == __end || *__begin != _CharT('}'))
__throw_format_error(
"The format string contains an invalid escape sequence");
break;
}
// Copy the character to the output verbatim.
*__out_it++ = *__begin++;
}
return __out_it;
}
} // namespace __format
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
template <class _OutIt, class _CharT, class _FormatOutIt>
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
requires(output_iterator<_OutIt, const _CharT&>) _LIBCPP_HIDE_FROM_ABI _OutIt
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
__vformat_to(
_OutIt __out_it, basic_string_view<_CharT> __fmt,
basic_format_args<basic_format_context<_FormatOutIt, _CharT>> __args) {
if constexpr (same_as<_OutIt, _FormatOutIt>)
return _VSTD::__format::__vformat_to(
basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(_VSTD::move(__out_it), __args));
else {
basic_string<_CharT> __str;
_VSTD::__format::__vformat_to(
basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(_VSTD::back_inserter(__str), __args));
return _VSTD::copy_n(__str.begin(), __str.size(), _VSTD::move(__out_it));
}
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
}
template <output_iterator<const char&> _OutIt>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt
vformat_to(_OutIt __out_it, string_view __fmt, format_args __args) {
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
return _VSTD::__vformat_to(_VSTD::move(__out_it), __fmt, __args);
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <output_iterator<const wchar_t&> _OutIt>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt
vformat_to(_OutIt __out_it, wstring_view __fmt, wformat_args __args) {
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
return _VSTD::__vformat_to(_VSTD::move(__out_it), __fmt, __args);
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <output_iterator<const char&> _OutIt, class... _Args>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
format_to(_OutIt __out_it, string_view __fmt, const _Args&... __args) {
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
return _VSTD::vformat_to(_VSTD::move(__out_it), __fmt,
_VSTD::make_format_args(__args...));
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <output_iterator<const wchar_t&> _OutIt, class... _Args>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
format_to(_OutIt __out_it, wstring_view __fmt, const _Args&... __args) {
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
return _VSTD::vformat_to(_VSTD::move(__out_it), __fmt,
_VSTD::make_wformat_args(__args...));
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
vformat(string_view __fmt, format_args __args) {
string __res;
_VSTD::vformat_to(_VSTD::back_inserter(__res), __fmt, __args);
return __res;
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
vformat(wstring_view __fmt, wformat_args __args) {
wstring __res;
_VSTD::vformat_to(_VSTD::back_inserter(__res), __fmt, __args);
return __res;
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <class... _Args>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
format(string_view __fmt, const _Args&... __args) {
return _VSTD::vformat(__fmt, _VSTD::make_format_args(__args...));
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <class... _Args>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
format(wstring_view __fmt, const _Args&... __args) {
return _VSTD::vformat(__fmt, _VSTD::make_wformat_args(__args...));
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <output_iterator<const char&> _OutIt, class... _Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt>
format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, string_view __fmt,
const _Args&... __args) {
// TODO FMT Improve PoC: using std::string is inefficient.
string __str = _VSTD::vformat(__fmt, _VSTD::make_format_args(__args...));
iter_difference_t<_OutIt> __s = __str.size();
iter_difference_t<_OutIt> __m =
_VSTD::clamp(__n, iter_difference_t<_OutIt>(0), __s);
__out_it = _VSTD::copy_n(__str.begin(), __m, _VSTD::move(__out_it));
return {_VSTD::move(__out_it), __s};
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <output_iterator<const wchar_t&> _OutIt, class... _Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt>
format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, wstring_view __fmt,
const _Args&... __args) {
// TODO FMT Improve PoC: using std::string is inefficient.
wstring __str = _VSTD::vformat(__fmt, _VSTD::make_wformat_args(__args...));
iter_difference_t<_OutIt> __s = __str.size();
iter_difference_t<_OutIt> __m =
_VSTD::clamp(__n, iter_difference_t<_OutIt>(0), __s);
__out_it = _VSTD::copy_n(__str.begin(), __m, _VSTD::move(__out_it));
return {_VSTD::move(__out_it), __s};
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t
formatted_size(string_view __fmt, const _Args&... __args) {
// TODO FMT Improve PoC: using std::string is inefficient.
return _VSTD::vformat(__fmt, _VSTD::make_format_args(__args...)).size();
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t
formatted_size(wstring_view __fmt, const _Args&... __args) {
// TODO FMT Improve PoC: using std::string is inefficient.
return _VSTD::vformat(__fmt, _VSTD::make_wformat_args(__args...)).size();
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
#ifndef _LIBCPP_HAS_NO_LOCALIZATION
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
template <class _OutIt, class _CharT, class _FormatOutIt>
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
requires(output_iterator<_OutIt, const _CharT&>) _LIBCPP_HIDE_FROM_ABI _OutIt
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
__vformat_to(
_OutIt __out_it, locale __loc, basic_string_view<_CharT> __fmt,
basic_format_args<basic_format_context<_FormatOutIt, _CharT>> __args) {
if constexpr (same_as<_OutIt, _FormatOutIt>)
return _VSTD::__format::__vformat_to(
basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(_VSTD::move(__out_it), __args,
_VSTD::move(__loc)));
else {
basic_string<_CharT> __str;
_VSTD::__format::__vformat_to(
basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(_VSTD::back_inserter(__str), __args,
_VSTD::move(__loc)));
return _VSTD::copy_n(__str.begin(), __str.size(), _VSTD::move(__out_it));
}
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
}
template <output_iterator<const char&> _OutIt>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt vformat_to(
_OutIt __out_it, locale __loc, string_view __fmt, format_args __args) {
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
return _VSTD::__vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt,
__args);
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <output_iterator<const wchar_t&> _OutIt>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt vformat_to(
_OutIt __out_it, locale __loc, wstring_view __fmt, wformat_args __args) {
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
return _VSTD::__vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt,
__args);
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <output_iterator<const char&> _OutIt, class... _Args>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt format_to(
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
_OutIt __out_it, locale __loc, string_view __fmt, const _Args&... __args) {
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
return _VSTD::vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt,
_VSTD::make_format_args(__args...));
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <output_iterator<const wchar_t&> _OutIt, class... _Args>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt format_to(
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
_OutIt __out_it, locale __loc, wstring_view __fmt, const _Args&... __args) {
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
return _VSTD::vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt,
_VSTD::make_wformat_args(__args...));
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
vformat(locale __loc, string_view __fmt, format_args __args) {
string __res;
_VSTD::vformat_to(_VSTD::back_inserter(__res), _VSTD::move(__loc), __fmt,
__args);
return __res;
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
vformat(locale __loc, wstring_view __fmt, wformat_args __args) {
wstring __res;
_VSTD::vformat_to(_VSTD::back_inserter(__res), _VSTD::move(__loc), __fmt,
__args);
return __res;
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <class... _Args>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
format(locale __loc, string_view __fmt, const _Args&... __args) {
return _VSTD::vformat(_VSTD::move(__loc), __fmt,
_VSTD::make_format_args(__args...));
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <class... _Args>
[libc++][format][1/6] Reduce binary size. This removes the `format_args_t` from `<format>` and adjusts the type of the `format_args` for the `vformat_to` overloads. The `format_context` uses a `back_insert_iterator<string>` therefore the new `output_iterator` function uses a `string` as its temporary storage buffer. This isn't ideal. The next patches in this series will improve this. These improvements make it easy to also improve `format_to_n` and `formatted_size`. This addresses P2216 `6. Binary size`. P2216 `5. Compile-time checks` are not part of this change. Implements parts of: - P2216 std::format improvements Depends on D103670 Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D110494
2021-09-04 19:26:58 +08:00
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
format(locale __loc, wstring_view __fmt, const _Args&... __args) {
return _VSTD::vformat(_VSTD::move(__loc), __fmt,
_VSTD::make_wformat_args(__args...));
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <output_iterator<const char&> _OutIt, class... _Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt>
format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, locale __loc,
string_view __fmt, const _Args&... __args) {
// TODO FMT Improve PoC: using std::string is inefficient.
string __str = _VSTD::vformat(_VSTD::move(__loc), __fmt,
_VSTD::make_format_args(__args...));
iter_difference_t<_OutIt> __s = __str.size();
iter_difference_t<_OutIt> __m =
_VSTD::clamp(__n, iter_difference_t<_OutIt>(0), __s);
__out_it = _VSTD::copy_n(__str.begin(), __m, _VSTD::move(__out_it));
return {_VSTD::move(__out_it), __s};
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <output_iterator<const wchar_t&> _OutIt, class... _Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt>
format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, locale __loc,
wstring_view __fmt, const _Args&... __args) {
// TODO FMT Improve PoC: using std::string is inefficient.
wstring __str = _VSTD::vformat(_VSTD::move(__loc), __fmt,
_VSTD::make_wformat_args(__args...));
iter_difference_t<_OutIt> __s = __str.size();
iter_difference_t<_OutIt> __m =
_VSTD::clamp(__n, iter_difference_t<_OutIt>(0), __s);
__out_it = _VSTD::copy_n(__str.begin(), __m, _VSTD::move(__out_it));
return {_VSTD::move(__out_it), __s};
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t
formatted_size(locale __loc, string_view __fmt, const _Args&... __args) {
// TODO FMT Improve PoC: using std::string is inefficient.
return _VSTD::vformat(_VSTD::move(__loc), __fmt,
_VSTD::make_format_args(__args...))
.size();
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t
formatted_size(locale __loc, wstring_view __fmt, const _Args&... __args) {
// TODO FMT Improve PoC: using std::string is inefficient.
return _VSTD::vformat(_VSTD::move(__loc), __fmt,
_VSTD::make_wformat_args(__args...))
.size();
}
[libc++] Add an option to disable wide character support in libc++ Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
2021-08-24 03:32:36 +08:00
#endif
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
[libc++][NFC] Add #endif comment for long #if-#endif block
2021-09-10 02:43:02 +08:00
#endif // _LIBCPP_HAS_NO_LOCALIZATION
[libc++][format] Implement formatters. This implements the initial version of the `std::formatter` class and its specializations. It also implements the following formatting functions: - `format` - `vformat` - `format_to` - `vformat_to` - `format_to_n` - `formatted_size` All functions have a `char` and `wchar_t` version. Parsing the format-spec and using the parsed format-spec hasn't been implemented. The code isn't optimized, neither for speed, nor for size. The goal is to have the rudimentary basics working, which can be used as a basis to improve upon. The formatters used in this commit are simple stubs that will be replaced by real formatters in later commits. The formatters that are slated to be replaced in this patch series don't have an availability macro to avoid merge conflicts. Note the formatter for `bool` uses `0` and `1` instead of "false" and "true". This will be fixed when the stub is replaced with a real formatter. Implements parts of: - P0645 Text Formatting Completes: - LWG3539 format_to must not copy models of output_iterator<const charT&> Reviewed By: ldionne, #libc, vitaut Differential Revision: https://reviews.llvm.org/D96664
2020-12-19 20:52:07 +08:00
[libc++][format] Add __format_arg_store. This implements the struct `__format_arg_store` and its dependencies: * the class basic_format_arg, * the class basic_format_args, * the class basic_format_context, * the function make_format_args, * the function wmake_format_args, * the function visit_format_arg, * several Standard required typedefs. The following parts will be implemented in a later patch: * the child class `basic_format_arg::handle`, * the function `basic_format_arg::basic_format_arg(const T* p)`. The following extension has been implemented: * the class basic_format_arg supports `__[u]int128_t` on platform where libc++ supports 128 bit integrals. Implements parts of: * P0645 Text Formatting Completes: * LWG3371 visit_format_arg and make_format_args are not hidden friends * LWG3542 basic_format_arg mishandles basic_string_view with custom traits Note https://mordante.github.io/blog/2021/06/05/format.html gives a bit more information about the goals and non-goals of this initial patch series. Reviewed By: #libc, ldionne, vitaut Differential Revision: https://reviews.llvm.org/D103357
2020-12-05 18:45:21 +08:00
#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
#endif //_LIBCPP_STD_VER > 17
_LIBCPP_END_NAMESPACE_STD
[libc++] Improve LIBCXX_ENABLE_INCOMPLETE_FEATURES. @tcanens pointed out the current behavior of the macro breaks the usage pattern described in http://wg21.link/SD6 ``` # if __has_include(<optional>) # include <optional> # if __cpp_lib_optional >= 201606 # define have_optional 1 # endif ``` To support this usage pattern the hard errror is removed. Instead the header includes nothing but the `<version>` header. Reviewed By: ldionne, #libc Differential Revision: https://reviews.llvm.org/D107134
2021-07-31 02:35:37 +08:00
#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT)
[libc++] Implement format_error. This is the first step at implementing <format>. It adds the <format> header and implements the `format_error`. class. Implemnts parts of: -P0645 Text Formatting Reviewed By: ldionne, #libc, miscco, curdeius Differential Revision: https://reviews.llvm.org/D92214
2020-11-27 02:12:18 +08:00
#endif // _LIBCPP_FORMAT