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make query_group macro procedural

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Switch to a procedural implementation of the `query_group!` macro,
residing in the `components/salsa_macros` subcrate.

Allow the user to override the invoked function via `salsa::invoke(...)`
and the name of the generated query type via `salsa::query_type(...)`.

In all tests, replace the `salsa::query_group! { ... }` invocations with
the new attribute-style `#[salsa::query_group]` macro, and change them
to the new naming scheme for query types (`...Query`).

Update README, examples, and documentation.
This commit is contained in:
Fabian Schuiki 2019-01-12 11:11:59 +01:00
parent cd454e986e
commit 93c30a953d
35 changed files with 768 additions and 782 deletions
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11
tests/macros.rs
View file

@ -1,10 +1,7 @@
salsa::query_group! {
trait MyDatabase: salsa::Database {
fn my_query(key: ()) -> () {
type MyQuery;
use fn another_module::another_name;
}
}
#[salsa::query_group]
trait MyDatabase: salsa::Database {
#[salsa::invoke(another_module::another_name)]
fn my_query(&self, key: ()) -> ();
}
mod another_module {