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Under this design, *all* databases are a `DatabaseImpl<U>`, where the `U` implements `UserData` (you can use `()` if there is none). Code would default to `&dyn salsa::Database` but if you want to give access to the userdata, you can define a custom database trait `MyDatabase: salsa::Databse` so long as you * annotate `MyDatabase` trait definition of impls of `MyDatabase` with `#[salsa::db]` * implement `MyDatabase` for `DatabaseImpl<U>` where `U` is your userdata (this could be a blanket impl, if you don't know the precise userdata type). The `tests/common/mod.rs` shows the pattern.
17 lines
448 B
Rust
17 lines
448 B
Rust
use db::CalcDatabaseImpl;
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use ir::{Diagnostic, SourceProgram};
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use salsa::Database as Db;
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mod compile;
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mod db;
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mod ir;
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mod parser;
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mod type_check;
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pub fn main() {
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let db: CalcDatabaseImpl = Default::default();
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let source_program = SourceProgram::new(&db, String::new());
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compile::compile(&db, source_program);
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let diagnostics = compile::compile::accumulated::<Diagnostic>(&db, source_program);
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eprintln!("{diagnostics:?}");
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}
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