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chore(provider): Added explanation for get_take ExecutionResult fn (#1776)

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rakita
2023-03-16 01:55:38 +01:00
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parent 3b8c876524
commit d6344e79fd
1 changed files with 16 additions and 0 deletions
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16
crates/storage/provider/src/transaction.rs
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@@ -765,6 +765,22 @@ where
}
/// Transverse over changesets and plain state and recreated the execution results.
///
/// Iterate over [tables::BlockTransitionIndex] and take all transitions.
/// Then iterate over all [tables::StorageChangeSet] and [tables::AccountChangeSet] in reverse
/// order and populate all changesets. To be able to populate changesets correctly and to
/// have both, new and old value of account/storage, we needs to have local state and access
/// to [tables::PlainAccountState] [tables::PlainStorageState].
/// While iteration over acocunt/storage changesets.
/// At first instance of account/storage we are taking old value from changeset,
/// new value from plain state and saving old value to local state.
/// As second accounter of same account/storage we are again taking old value from changeset,
/// but new value is taken from local state and old value is again updated to local state.
///
/// Now if TAKE is true we will use local state and update all old values to plain state tables.
///
/// After that, iterate over [`tables::BlockBodies`] and pack created changesets in block chunks
/// taking care if block has block changesets or not.
fn get_take_block_execution_result_range<const TAKE: bool>(
&self,
range: impl RangeBounds<BlockNumber> + Clone,