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fix format a long value with formatter #2768

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Merged
StephanTLavavej merged 9 commits into from
Jun 12, 2022
Merged

fix format a long value with formatter #2768

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ec54aaf
fix format with custom types
fsb4000 Jun 7, 2022
2503d2a
don't do `static_cast` if `_Storage_type` is `handle`
fsb4000 Jun 7, 2022
27721b6
Use `42L` to initialize `Box<long>`.
StephanTLavavej Jun 7, 2022
aef5eae
Test `char` and `wchar_t`.
StephanTLavavej Jun 8, 2022
2722407
Extract `_Arg_formatter`.
StephanTLavavej Jun 8, 2022
a72a280
Move test coverage to P0645R10_text_formatting_custom_formatting.
StephanTLavavej Jun 8, 2022
8caf0bd
same _Storage_type for `const string` and `string`
fsb4000 Jun 8, 2022
ba451e0
add `basic_format_arg` constructors, fix `charT*` storage type, remov…
fsb4000 Jun 9, 2022
3188b71
add one more `static_assert`
fsb4000 Jun 9, 2022
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same _Storage_type for const string and string 
Co-authored-by: S. B. Tam <[email protected]>
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@fsb4000 @cpplearner
fsb4000 and cpplearner committed Jun 8, 2022
commit 8caf0bd0e1c1e0825a124a6d41602f3e7347d51b
2 changes: 1 addition & 1 deletion stl/inc/format
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Expand Up @@ -1776,7 +1776,7 @@ struct _Format_arg_traits {
-> basic_string_view<_Char_type>; // not defined

template <class _Traits, class _Alloc>
static auto _Phony_basic_format_arg_constructor(const basic_string<_Char_type, _Traits, _Alloc>&)
static auto _Phony_basic_format_arg_constructor(basic_string<_Char_type, _Traits, _Alloc>)
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-> basic_string_view<_Char_type>; // not defined

static auto _Phony_basic_format_arg_constructor(nullptr_t) -> const void*; // not defined
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4 changes: 4 additions & 0 deletions tests/std/tests/P0645R10_text_formatting_args/test.cpp
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Expand Up @@ -7,6 +7,7 @@
#include <cstdint>
#include <format>
#include <memory>
#include <string>
#include <string_view>
#include <type_traits>
#include <variant>
Expand Down Expand Up @@ -212,6 +213,9 @@ void test_format_arg_store() {
static_assert(sizeof(_Format_arg_index) == sizeof(size_t));
static_assert(is_same_v<_Format_arg_traits<format_context>::_Storage_type<void*>, const void*>);

static_assert(is_same_v<_Format_arg_traits<format_context>::_Storage_type<string>, string_view>);
static_assert(is_same_v<_Format_arg_traits<format_context>::_Storage_type<const string>, string_view>);

template <class Context>
void test_visit_monostate() {
assert(visit_format_arg(visitor<Context>, basic_format_arg<Context>()) == Arg_type::none);
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