Rewrite NameBuilder
#394
Closed
Rewrite NameBuilder
#394
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This is a simple implementation with a different API from the previous code, designed to be replaced with a more efficient implementation in the future.
Most of the domain name types have been integrated with 'NameBuilder', abandoning previous support for 'from_chars()' or 'from_symbols()' and instead focusing on 'FromStr'. More complex inputs should be processed directly using 'NameBuilder' instead.
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Closing this in favor of a |
bal-e
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Unlike the existing 'NameBuilder', this type uses a fixed-size buffer to write the name into. This results in simpler code and it should be more efficient. It provides simple methods to extract domain names by borrowing from the buffer instead of allocating. This is a rewrite of <#394>.
bal-e
added a commit
that referenced
this pull request
Oct 28, 2024
Unlike the existing 'NameBuilder', this type uses a fixed-size buffer to write the name into. This results in simpler code and it should be more efficient. It provides simple methods to extract domain names by borrowing from the buffer instead of allocating. This is a rewrite of <#394>.
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This is primarily a performance enhancement. The idea is to require the storage backing
NameBuilderto always provide a fixed 256-byte array, rather than performing any dynamic allocations. SinceNameBuilders are transient objects, allocating a few more bytes won't hurt, especially if they can be put on the stack.I initially intended to make
NameBuilderjust take a reference to a[u8; 256]array somewhere in the caller's code. However, this would make it harder to storeNameBuilder(because you also need to store the backing buffer somewhere, and you can quickly run into self-referential lifetime issues). Instead, I use aBufferparameter that should implementBorrowandBorrowMut(notAsRef/AsMutas they don't have the blanketimpl Borrow<T> for T).This work will lead up to #388, making it easier to build domain names quickly. Note that I've dropped all support for
Symbolhere.