Rust SDK: group all codegen'd names exported from the SDK under pub mod __codegen
#1900
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This turns out to be effectively a prerequisite for client-side indices. Storing indexes in a type-erased way while making them `Clone` for storage in `im::HashMap` is likely possible, but it's at least very challenging and complex. Given that we no longer actually need the concurrent persistence offered by `im::HashMap`, it seems easier to just revert to using `std::collections::HashMap`.
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As opposed to having a bunch of `#[doc(hidden)] pub mod`s with a variety of different purposes. This means we can reorganize the SDK internals without breaking codegen.
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Description of Changes
Based on #1897 . While writing that PR, I moved a definition from
db_connection.rstoclient_cache.rs. This needlessly broke codegen.Rather than having the codegen rely on a whole bunch of different
#[doc(hidden)] pub mods in the SDK library by path, group every name the codegen refers to underspacetimedb_sdk::__codegen. This has several benefits:__codegenmodule.In a similar vein, the unstable interface Cloud use(s|d) to set its client address is moved to
spacetimedb_sdk::unstable. This may end up getting removed anyways; I'm not sure what the plan is going forward for how cloud nodes will identify themselves.API and ABI breaking changes
Breaks codegen. Minor user-facing breakage:
u256, i256are now re-exported from the SDK root rather than via thespacetimedb_sdk::sats::{u256, i256}. Thesatscrate is no longer fully re-exported, so users who want it will need a separate dependency.Expected complexity level and risk
1
Testing