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Implement iter extension for all iterators over StoreId

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Matthias Beyer 2017-11-25 16:10:07 +01:00
parent 898617ff62
commit 67410b3ad2
1 changed files with 6 additions and 4 deletions
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10
lib/core/libimagstore/src/iter.rs
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@ -27,14 +27,13 @@ macro_rules! mk_iterator_mod {
fun = $fun:expr fun = $fun:expr
} => { } => {
pub mod $modname { pub mod $modname {
use storeid::StoreIdIterator;
use storeid::StoreId; use storeid::StoreId;
#[allow(unused_imports)] #[allow(unused_imports)]
use store::FileLockEntry; use store::FileLockEntry;
use store::Store; use store::Store;
use error::Result; use error::Result;
pub struct $itername<'a>(StoreIdIterator, &'a Store); pub struct $itername<'a>(Box<Iterator<Item = StoreId>>, &'a Store);
impl<'a> Iterator for $itername<'a> { impl<'a> Iterator for $itername<'a> {
type Item = Result<$yield>; type Item = Result<$yield>;
@ -48,11 +47,14 @@ macro_rules! mk_iterator_mod {
fn $extfnname(self, store: &'a Store) -> $itername<'a>; fn $extfnname(self, store: &'a Store) -> $itername<'a>;
} }
impl<'a> $extname<'a> for StoreIdIterator { impl<'a, I> $extname<'a> for I
where I: Iterator<Item = StoreId> + 'static
{
fn $extfnname(self, store: &'a Store) -> $itername<'a> { fn $extfnname(self, store: &'a Store) -> $itername<'a> {
$itername(self, store) $itername(Box::new(self), store)
} }
} }
} }
} }
} }