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AK: Add support for "debug only" formatters

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

View file

@ -19,7 +19,7 @@ template<typename... Args>
ThrowCompletionOr<DeprecatedString> deprecated_format(VM& vm, CheckedFormatString<Args...>&& fmtstr, Args const&... args)
{
StringBuilder builder;
AK::VariadicFormatParams parameters { args... };
AK::VariadicFormatParams<AK::AllowDebugOnlyFormatters::No, Args...> parameters { args... };
TRY_OR_THROW_OOM(vm, vformat(builder, fmtstr.view(), parameters));
return builder.to_deprecated_string();