71 lines
1.9 KiB
Rust
71 lines
1.9 KiB
Rust
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use super::*;
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// use cached_tree_hash::CachedTreeHash;
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// use ssz::{Decodable, Encodable};
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// use tree_hash::TreeHash;
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impl<T, N: Unsigned> tree_hash::TreeHash for FixedLenVec<T, N>
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where
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T: tree_hash::TreeHash,
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{
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fn tree_hash_type() -> tree_hash::TreeHashType {
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tree_hash::TreeHashType::Vector
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}
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fn tree_hash_packed_encoding(&self) -> Vec<u8> {
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unreachable!("Vector should never be packed.")
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}
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fn tree_hash_packing_factor() -> usize {
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unreachable!("Vector should never be packed.")
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}
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fn tree_hash_root(&self) -> Vec<u8> {
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tree_hash::impls::vec_tree_hash_root(&self.vec)
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}
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}
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impl<T, N: Unsigned> cached_tree_hash::CachedTreeHash for FixedLenVec<T, N>
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where
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T: cached_tree_hash::CachedTreeHash + tree_hash::TreeHash,
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{
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fn new_tree_hash_cache(
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&self,
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depth: usize,
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) -> Result<cached_tree_hash::TreeHashCache, cached_tree_hash::Error> {
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let (cache, _overlay) = cached_tree_hash::vec::new_tree_hash_cache(&self.vec, depth)?;
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Ok(cache)
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}
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fn tree_hash_cache_schema(&self, depth: usize) -> cached_tree_hash::BTreeSchema {
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cached_tree_hash::vec::produce_schema(&self.vec, depth)
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}
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fn update_tree_hash_cache(
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&self,
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cache: &mut cached_tree_hash::TreeHashCache,
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) -> Result<(), cached_tree_hash::Error> {
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cached_tree_hash::vec::update_tree_hash_cache(&self.vec, cache)?;
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Ok(())
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}
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}
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impl<T, N: Unsigned> ssz::Encodable for FixedLenVec<T, N>
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where
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T: ssz::Encodable,
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{
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fn ssz_append(&self, s: &mut ssz::SszStream) {
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s.append_vec(&self.vec)
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}
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}
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impl<T, N: Unsigned> ssz::Decodable for FixedLenVec<T, N>
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where
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T: ssz::Decodable + Default,
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{
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fn ssz_decode(bytes: &[u8], index: usize) -> Result<(Self, usize), ssz::DecodeError> {
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ssz::decode_ssz_list(bytes, index).and_then(|(vec, i)| Ok((vec.into(), i)))
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}
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}
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