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Add vector type to tree hashing

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This commit is contained in:
Paul Hauner
2019-04-17 10:57:36 +10:00
parent 49d066015b
commit af39f096e7
11 changed files with 211 additions and 72 deletions
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32
eth2/utils/tree_hash/src/lib.rs
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@@ -13,8 +13,9 @@ pub use standard_tree_hash::{merkle_root, TreeHash};
#[derive(Debug, PartialEq, Clone)]
pub enum TreeHashType {
Basic,
Vector,
List,
Composite,
Container,
}
fn num_sanitized_leaves(num_bytes: usize) -> usize {
@@ -31,15 +32,15 @@ macro_rules! impl_tree_hash_for_ssz_bytes {
($type: ident) => {
impl tree_hash::TreeHash for $type {
fn tree_hash_type() -> tree_hash::TreeHashType {
tree_hash::TreeHashType::List
tree_hash::TreeHashType::Vector
}
fn tree_hash_packed_encoding(&self) -> Vec<u8> {
panic!("bytesN should never be packed.")
unreachable!("Vector should never be packed.")
}
fn tree_hash_packing_factor() -> usize {
panic!("bytesN should never be packed.")
unreachable!("Vector should never be packed.")
}
fn tree_hash_root(&self) -> Vec<u8> {
@@ -48,3 +49,26 @@ macro_rules! impl_tree_hash_for_ssz_bytes {
}
};
}
#[macro_export]
macro_rules! impl_vec_as_fixed_len {
($type: ty) => {
impl tree_hash::TreeHash for $type {
fn tree_hash_type() -> tree_hash::TreeHashType {
tree_hash::TreeHashType::Vector
}
fn tree_hash_packed_encoding(&self) -> Vec<u8> {
unreachable!("Vector should never be packed.")
}
fn tree_hash_packing_factor() -> usize {
unreachable!("Vector should never be packed.")
}
fn tree_hash_root(&self) -> Vec<u8> {
tree_hash::standard_tree_hash::vec_tree_hash_root(self)
}
}
};
}