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Fix failing vec hashing test

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This commit is contained in:
Paul Hauner 2019-04-11 17:21:57 +10:00
parent 0c0eebd774
commit 0bdd61e564
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GPG Key ID: D362883A9218FCC6
2 changed files with 13 additions and 15 deletions
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21
eth2/utils/ssz/src/cached_tree_hash.rs
View File

@ -195,15 +195,18 @@ impl TreeHashCache {
Ok(())
}
pub fn chunk_equals(&mut self, chunk: usize, other: &[u8]) -> Result<bool, Error> {
pub fn get_chunk(&self, chunk: usize) -> Result<&[u8], Error> {
let start = chunk * BYTES_PER_CHUNK;
let end = start + BYTES_PER_CHUNK;
Ok(self
.cache
.get(start..end)
.ok_or_else(|| Error::NoModifiedFieldForChunk(chunk))?
== other)
.ok_or_else(|| Error::NoModifiedFieldForChunk(chunk))?)
}
pub fn chunk_equals(&mut self, chunk: usize, other: &[u8]) -> Result<bool, Error> {
Ok(self.get_chunk(chunk)? == other)
}
pub fn changed(&self, chunk: usize) -> Result<bool, Error> {
@ -218,15 +221,11 @@ impl TreeHashCache {
}
pub fn hash_children(&self, children: (&usize, &usize)) -> Result<Vec<u8>, Error> {
let start = children.0 * BYTES_PER_CHUNK;
let end = start + BYTES_PER_CHUNK * 2;
let mut child_bytes = Vec::with_capacity(BYTES_PER_CHUNK * 2);
child_bytes.append(&mut self.get_chunk(*children.0)?.to_vec());
child_bytes.append(&mut self.get_chunk(*children.1)?.to_vec());
let children = &self
.cache
.get(start..end)
.ok_or_else(|| Error::NoChildrenForHashing((*children.0, *children.1)))?;
Ok(hash(children))
Ok(hash(&child_bytes))
}
pub fn into_merkle_tree(self) -> Vec<u8> {

7
eth2/utils/ssz/src/cached_tree_hash/impls.rs
View File

@ -133,14 +133,13 @@ where
// The item existed in the previous list and exsits in the current list.
(Some(old), Some(new)) => {
new.cached_hash_tree_root(old, cache, *start_chunk)?;
},
}
// The item didn't exist in the old list and doesn't exist in the new list,
// nothing to do.
(None, None) => {},
_ => panic!("variable sized lists not implemented")
(None, None) => {}
_ => panic!("variable sized lists not implemented"),
};
}
// this thing
}
}