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AK: Document the non-standard extensions in TRY
I'm not sure there's a material improvement from this patch. However, I've been reading the error handling code from multiple projects and was excited to see Serenity being able to handle assignment (`auto x = TRY(make_x())`) the same way as actions (`TRY(do_x())`). I think it's worth documenting that this is only possible due to non-standard extensions.
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sideshowbarker
2024-07-18 03:35:30 +09:00
Author: https://github.com/paulherman 🔰 Commit: https://github.com/SerenityOS/serenity/commit/d989c50c90 Pull-request: https://github.com/SerenityOS/serenity/pull/15650 Reviewed-by: https://github.com/linusg
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AK/Try.h
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AK/Try.h
@ -8,6 +8,11 @@
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// NOTE: This macro works with any result type that has the expected APIs.
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// It's designed with AK::Result and AK::Error in mind.
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//
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// It depends on a non-standard C++ extension, specifically
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// on statement expressions [1]. This is known to be implemented
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// by at least clang and gcc.
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// [1] https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html
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#define TRY(expression) \
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({ \
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