* use the standard `test-main.cc` component instead of injected test infrastructure sources
* undo now obsolete commit `00235d8a` from July 2021
* Clang cannot import user-defined literals as it seems -> disable test
* Clang emits duplicate, non-mergeable copies of `detail::buffer`'s vtable, causing linker errors -> disable test
names declared to be exported at the point of introduction into a namespace *must not* be (re-)declared as exported later in the TU, e.g. when they are redeclared, defined, or specialized. [module.export]/6
Drive-by fix found during module testing: add a missing `detail::` name qualification
* export public documented API
* don't export `namespace detail`
* add `std.h` into module
* add missing namespace qualification in `xchar.h`
* fix call to `detail::get_iterator` in `xchar.h`
* fix ambiguous overload of `detail::isfinite` in `chrono.h`
* do this in _some_ tests to improve test coverage and catch possible problems due to that
* fix invalid export of `static constexpr` constant
* fix msvc warnings about unreachable code in high warning levels
Introduce `FMT_BEGIN_DETAIL_NAMESPACE` and `FMT_END_DETAIL_NAMESPACE` for `namespace detail` sections embedded in that part of the code that contains all declarations that are exported from the module, i.e. which is enclosed by `FMT_MODULE_EXPORT_BEGIN` and `FMT_MODULE_EXPORT_END`. Given a correct implementation of C++20 modules, neither the name `fmt::detail` nor any of its contents will become visible outside of the module.
Unqualified calls to 'make_format_args' may find the same name by ADL in <format> if this C++20 header happens to be directly or indirectly included in a translation unit. Do a qualified lookup instead.
Otherwise, Google Test will insist on inserting 'char8_t' NTBS into 'char' streams, but basic_ostream<char>::operator<< overloads taking 'char8_t' arguments are defined as deleted by P1423.
Handling individual 'char8_t's is done inline.
This fixes the compilation errors seen in C++20 mode beginning with VS2019 Update 2.
Signed-off-by: Daniela Engert <dani@ngrt.de>
Since C++17, using template specialization 'std::allocator<void>' in any shape or form (even just mentioning it) is deprecated! A simple workaround is replacing 'void' by another (preferably empty) type, e.g. 'fmt::monostate'.
Found by Clang 9 in Visual Studio.
C++17 deprecated 'std::result_of' in favour of 'std::invoke_result' and will ban it outright in C++20. Therefore
- implement 'internal::result_of' in terms of 'std::invoke_result' when compiling C++17 mode.
- implement 'internal::result_of' in terms of 'std::result_of' when compiling in modes C++11 or C++14.
Signed-off-by: Daniela Engert <dani@ngrt.de>
Howard Hinnant's 'date' library recently gained these two new formatting specifiers. This implementation in {fmt} includes support for 'std::chrono::duration' specializations with floating-point representation types and user-definable precision.
Signed-off-by: Daniela Engert <dani@ngrt.de>
Mostly equivalent to 'sprintf(const S &format, const Args & ... args)' but generates at most 'n' characters through output iterator 'it'. The output type is the same as with 'format_to_n'.
Signed-off-by: Daniela Engert <dani@ngrt.de>
The iterator class itself and its helpers 'to_pointer' are removed after reformulating the formatting loop in terms of a 'basic_string_view<Char>::iterator'.
Signed-off-by: Daniela Engert <dani@ngrt.de>
The sheer presence of 'std::gmtime' or 'std::localtime' gives rise to C4996 warnings in Microsofts compilers. Alas, the 'fallback(internal::null<>)'functions containing these library calls are never ADL-picked in the respective 'handle(internal::null<>)' selectors. Therefore hiding the fallbacks from msvc is perfectly fine.
std::back_insert_iterators model the OutputIterator concept but differ considerably in their traits and behavior. In particular the former made compilation to fail when format_to_n is given a back_inserter as first argument. The emulation of an OutputIterator is not perfect due to the behavioural differences of back_insert_iterators (e.g. assignment always implies increment) but good enough to be used within fmt's machinery.
change total specialization of 'struct formatter<std::tm>' into partial specialization 'template <typename Char> struct formatter<std::tm, Char>', backed by matching 'strftime'-like overloads
Daniela Engert