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#![crate_name="foo"]
// reduced from sqlx 0.7.3
use std::future::Future;
use std::pin::Pin;
use std::ops::{Deref, DerefMut};
pub enum Error {}
pub trait Acquire<'c> {
type Database: Database;
type Connection: Deref<Target = <Self::Database as Database>::Connection> + DerefMut + Send;
}
pub trait Database {
type Connection: Connection<Database = Self>;
}
pub trait Connection {
type Database: Database;
type Options: ConnectionOptions<Connection = Self>;
fn begin(
&mut self
) -> Pin<Box<dyn Future<Output = Result<Transaction<'_, Self::Database>, Error>> + Send + '_>>
where
Self: Sized;
}
pub trait ConnectionOptions {
type Connection: Connection;
}
pub struct Transaction<'c, DB: Database> {
_db: &'c DB,
}
impl<'t, 'c, DB: Database> Acquire<'t> for &'t mut Transaction<'c, DB>
where <DB as Database>::Connection: Send
{
type Database = DB;
type Connection = &'t mut <DB as Database>::Connection;
}
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