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overlaydb put_payload.

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This commit is contained in:
Gav Wood 2015-11-28 19:03:50 +01:00
parent 4640d64965
commit 7733faaab5
1 changed files with 14 additions and 5 deletions
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19
src/overlaydb.rs
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@ -4,6 +4,7 @@ use error::*;
use hash::*;
use bytes::*;
use sha3::*;
use rlp::*;
use hashdb::*;
use memorydb::*;
use std::ops::*;
@ -34,10 +35,10 @@ impl OverlayDB {
if back_rc + rc < 0 {
return Err(From::from(BaseDataError::NegativelyReferencedHash));
}
self.put_payload(&key, (&back_value, rc + back_rc));
self.put_payload(&key, (back_value, rc + back_rc));
}
None => {
self.put_payload(&key, (&value, rc));
self.put_payload(&key, (value, rc));
}
};
ret += 1;
@ -48,12 +49,20 @@ impl OverlayDB {
/// Get the refs and value of the given key.
fn payload(&self, key: &H256) -> Option<(Bytes, i32)> {
unimplemented!();
db.get(&key.bytes())
.expect("Low-level database error. Some issue with your hard disk?")
.map(|d| {
Rlp r(d.deref());
r(Bytes, i32)
})
}
/// Get the refs and value of the given key.
fn put_payload(&self, key: &H256, payload: (&Bytes, i32)) {
unimplemented!();
fn put_payload(&self, key: &H256, payload: (Bytes, i32)) {
let mut s = RlpStream::new_list(2);
s.append(payload.1);
s.append(payload.0);
backing.put(&key.bytes(), &s.out().unwrap());
}
}