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salsa/components/salsa-macros
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Maxwell Elliot Heiber a1be30bc13 Make storage fields of #nameGroupStorage private 
This change resolves a fixme that referenced #120.

This change breaks no tests, and, if I understand
correctly, does not affect user-facing API.

Here is the difference for the `HelloWorldGroupStorage__` struct
generated from macros in the `hello_world` example:

**Before:**

```rs
struct HelloWorldGroupStorage__ {
    pub input_string:std::sync::Arc<<InputStringQuery as salsa::Query> ::Storage> ,pub length:std::sync::Arc<<LengthQuery as salsa::Query> ::Storage> ,
}
```

**After:**

```rs
struct HelloWorldGroupStorage__ {
    input_string:std::sync::Arc<<InputStringQuery as salsa::Query> ::Storage> ,length:std::sync::Arc<<LengthQuery as salsa::Query> ::Storage> ,
}
```
2022-01-23 20:18:25 +00:00
..
src Make storage fields of #nameGroupStorage private 2022-01-23 20:18:25 +00:00
Cargo.toml Publish 0.17.0-pre.2 2021-10-06 22:33:30 +02:00
LICENSE-APACHE rename salsa_macros to salsa-macros 2019-01-17 05:28:42 -05:00
LICENSE-MIT rename salsa_macros to salsa-macros 2019-01-17 05:28:42 -05:00
README.md rename salsa_macros to salsa-macros 2019-01-17 05:28:42 -05:00

README.md

salsa

Test Book Released API docs Crates.io

A generic framework for on-demand, incrementalized computation.

Obligatory warning

Very much a WORK IN PROGRESS at this point. Ready for experimental use but expect frequent breaking changes.

Credits

This system is heavily inspired by adapton, glimmer, and rustc's query system. So credit goes to Eduard-Mihai Burtescu, Matthew Hammer, Yehuda Katz, and Michael Woerister.

Key idea

The key idea of salsa is that you define your program as a set of queries. Every query is used like function K -> V that maps from some key of type K to a value of type V. Queries come in two basic varieties:

  • Inputs: the base inputs to your system. You can change these whenever you like.
  • Functions: pure functions (no side effects) that transform your inputs into other values. The results of queries is memoized to avoid recomputing them a lot. When you make changes to the inputs, we'll figure out (fairly intelligently) when we can re-use these memoized values and when we have to recompute them.

Want to learn more?

To learn more about Salsa, try one of the following:

Getting in touch

The bulk of the discussion happens in the issues and pull requests, but we have a zulip chat as well.