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use std::fmt::Debug;
use std::marker::PhantomData;
#[derive(Debug)]
pub struct TransactionImpl<'db> {
_marker: PhantomData<&'db ()>,
}
#[derive(Debug)]
pub struct CursorImpl<'txn> {
_marker: PhantomData<&'txn ()>,
}
pub trait Cursor<'txn> {}
pub trait Transaction<'db>: Send + Sync + Debug + Sized {
type Cursor<'tx>: Cursor<'tx>
where
'db: 'tx,
Self: 'tx;
fn cursor<'tx>(&'tx self) -> Result<Self::Cursor<'tx>, ()>
where
'db: 'tx;
}
impl<'tx> Cursor<'tx> for CursorImpl<'tx> {}
impl<'db> Transaction<'db> for TransactionImpl<'db> {
type Cursor<'tx> = CursorImpl<'tx>; //~ ERROR lifetime bound not satisfied
fn cursor<'tx>(&'tx self) -> Result<Self::Cursor<'tx>, ()>
where
'db: 'tx,
{
loop {}
}
}
fn main() {}
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