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Add progress on state_processing fixed-len update

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This commit is contained in:
Paul Hauner
2019-05-08 15:36:02 +10:00
parent 7a67d34293
commit 8cefd20e9d
29 changed files with 275 additions and 268 deletions
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14
eth2/state_processing/src/per_slot_processing.rs
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@@ -11,7 +11,10 @@ pub enum Error {
/// Advances a state forward by one slot, performing per-epoch processing if required.
///
/// Spec v0.5.1
pub fn per_slot_processing(state: &mut BeaconState, spec: &ChainSpec) -> Result<(), Error> {
pub fn per_slot_processing<T: BeaconStateTypes>(
state: &mut BeaconState<T>,
spec: &ChainSpec,
) -> Result<(), Error> {
cache_state(state, spec)?;
if (state.slot + 1) % spec.slots_per_epoch == 0 {
@@ -23,7 +26,10 @@ pub fn per_slot_processing(state: &mut BeaconState, spec: &ChainSpec) -> Result<
Ok(())
}
fn cache_state(state: &mut BeaconState, spec: &ChainSpec) -> Result<(), Error> {
fn cache_state<T: BeaconStateTypes>(
state: &mut BeaconState<T>,
spec: &ChainSpec,
) -> Result<(), Error> {
let previous_slot_state_root = state.update_tree_hash_cache()?;
// Note: increment the state slot here to allow use of our `state_root` and `block_root`
@@ -39,10 +45,10 @@ fn cache_state(state: &mut BeaconState, spec: &ChainSpec) -> Result<(), Error> {
}
// Store the previous slot's post state transition root.
state.set_state_root(previous_slot, previous_slot_state_root, spec)?;
state.set_state_root(previous_slot, previous_slot_state_root)?;
let latest_block_root = Hash256::from_slice(&state.latest_block_header.signed_root()[..]);
state.set_block_root(previous_slot, latest_block_root, spec)?;
state.set_block_root(previous_slot, latest_block_root)?;
// Set the state slot back to what it should be.
state.slot -= 1;