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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; }
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10 changed files with 36 additions and 17 deletions
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@ -37,7 +37,7 @@ public:
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{
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// FIXME: This really not ideal, but vformat expects StringBuilder.
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StringBuilder builder;
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AK::VariadicFormatParams variadic_format_params { parameters... };
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AK::VariadicFormatParams<AK::AllowDebugOnlyFormatters::No, Parameters...> variadic_format_params { parameters... };
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TRY(vformat(builder, fmtstr.view(), variadic_format_params));
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return append_bytes(builder.string_view().bytes());
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}
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