I changed the encoding so that the previous generated code is no longer necessary. Encoded data now carries all the information needed to decode struct fields correctly, even if fields have been added and reordered.
On Sunday, January 24, 2021 at 8:29:58 AM UTC-5 Jonathan Amsterdam wrote: > Thanks for the suggestions. I created https://github.com/jba/codec/pull/1 > to address them. You can comment in more detail there if you'd like. > > On Wed, Jan 20, 2021 at 12:13 PM roger peppe <rogp...@gmail.com> wrote: > >> On Wed, 20 Jan 2021 at 13:31, Jonathan Amsterdam <jbams...@gmail.com> >> wrote: >> >>> The encoding scheme is described briefly in the README[0] and the >>> code[1]. >>> >>> To answer your two specific questions, interfaces are represented as a >>> pair (typeNumber, value) where typeNumber maps to a registered type. (Like >>> gob, types must be registered.) Structs are represented as: startCode >>> (fieldNumber value)* endCode. The field numbers are assigned by the >>> generator. >>> >> >> It might be good to be more explicit about how the field numbers are >> assigned. From a brief experiment, it seems like there's not a deterministic >> relationship between a struct and its wire representation, and instead >> the generated field numbers are taken from the generated code file >> when it's present. So ISTM that any user of this must be very careful to >> preserve that file, and realise that it's not OK to generate >> the codec code for a type independently. >> >> I'd also suggest that it would be good to fully document the syntax and >> explain the trade-offs of this format and when >> it might or might not be appropriate to use. >> >> One other question: how are the type numbers maintained as stable >> entities over time? >> >> cheers, >> rog. >> >> -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/ad1d2cc1-acfc-4278-93b7-05e09bb8b8aan%40googlegroups.com.
