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AK: Add support for "debug only" formatters

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These are formatters that can only be used with debug print
functions, such as dbgln(). Currently this is limited to
Formatter<ErrorOr<T>>. With this you can still debug log ErrorOr
values (good for debugging), but trying to use them in any
String::formatted() call will fail (which prevents .to_string()
errors with the new failable strings being ignored).

You make a formatter debug only by adding a constexpr method like:
static constexpr bool is_debug_only() { return true; }
This commit is contained in:
MacDue 2023-01-13 02:19:40 +00:00 • committed by Linus Groh
parent 1388375310
commit 9a120d7243
10 changed files with 36 additions and 17 deletions
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2
Kernel/KString.h
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@ -26,7 +26,7 @@ public:
template<typename... Parameters>
[[nodiscard]] static ErrorOr<NonnullOwnPtr<KString>> formatted(CheckedFormatString<Parameters...>&& fmtstr, Parameters const&... parameters)
{
AK::VariadicFormatParams variadic_format_parameters { parameters... };
AK::VariadicFormatParams<AK::AllowDebugOnlyFormatters::No, Parameters...> variadic_format_parameters { parameters... };
return vformatted(fmtstr.view(), variadic_format_parameters);
}