reth_trie::node_iter

Struct TrieNodeIter

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pub struct TrieNodeIter<C, H: HashedCursor> {
    pub walker: TrieWalker<C>,
    pub hashed_cursor: H,
    /* private fields */
}
Expand description

An iterator over existing intermediate branch nodes and updated leaf nodes.

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§walker: TrieWalker<C>

The walker over intermediate nodes.

§hashed_cursor: H

The cursor for the hashed entries.

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impl<C, H: HashedCursor> TrieNodeIter<C, H>

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pub const fn new(walker: TrieWalker<C>, hashed_cursor: H) -> Self

Creates a new TrieNodeIter.

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pub const fn with_last_hashed_key(self, previous_hashed_key: B256) -> Self

Sets the last iterated hashed key and returns the modified TrieNodeIter. This is used to resume iteration from the last checkpoint.

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impl<C, H> TrieNodeIter<C, H>
where C: TrieCursor, H: HashedCursor,

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pub fn try_next( &mut self, ) -> Result<Option<TrieElement<<H as HashedCursor>::Value>>, DatabaseError>

Return the next trie node to be added to the hash builder.

Returns the nodes using this algorithm:

  1. Return the current intermediate branch node if it hasn’t been updated.
  2. Advance the trie walker to the next intermediate branch node and retrieve next unprocessed key.
  3. Reposition the hashed cursor on the next unprocessed key.
  4. Return every hashed entry up to the key of the current intermediate branch node.
  5. Repeat.

NOTE: The iteration will start from the key of the previous hashed entry if it was supplied.

Trait Implementations§

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impl<C: Debug, H: Debug + HashedCursor> Debug for TrieNodeIter<C, H>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<C, H> Freeze for TrieNodeIter<C, H>
where H: Freeze, C: Freeze, <H as HashedCursor>::Value: Freeze,

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impl<C, H> !RefUnwindSafe for TrieNodeIter<C, H>

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impl<C, H> Send for TrieNodeIter<C, H>
where H: Send, C: Send, <H as HashedCursor>::Value: Send,

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impl<C, H> Sync for TrieNodeIter<C, H>
where H: Sync, C: Sync, <H as HashedCursor>::Value: Sync,

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impl<C, H> Unpin for TrieNodeIter<C, H>
where H: Unpin, C: Unpin, <H as HashedCursor>::Value: Unpin,

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impl<C, H> !UnwindSafe for TrieNodeIter<C, H>

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