Enum trie_db::RecordedForKey

pub enum RecordedForKey {
    Value,
    Hash,
    None,
}

Result of TrieRecorder::trie_nodes_recorded_for_key.

Variants

Value

We recorded all trie nodes up to the value for a storage key.

This should be returned when the recorder has seen the following TrieAccess:

• TrieAccess::Value: If we see this TrieAccess, it means we have recorded all the trie nodes up to the value.
• TrieAccess::NonExisting: If we see this TrieAccess, it means we have recorded all the necessary trie nodes to prove that the value doesn’t exist in the trie.

Hash

We recorded all trie nodes up to the value hash for a storage key.

If we have a RecordedForKey::Value, it means that we also have the hash of this value. This also means that if we first have recorded the hash of a value and then also record the value, the access should be upgraded to RecordedForKey::Value.

This should be returned when the recorder has seen the following TrieAccess:

• TrieAccess::Hash: If we see this TrieAccess, it means we have recorded all trie nodes to have the hash of the value.

None

We haven’t recorded any trie nodes yet for a storage key.

This means we have not seen any TrieAccess referencing the searched key.

Implementations

impl RecordedForKey

pub fn is_none(&self) -> bool

Is self equal to Self::None?

Trait Implementations

impl Clone for RecordedForKey

fn clone(&self) -> RecordedForKey

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RecordedForKey

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

Formats the value using the given formatter.

impl PartialEq for RecordedForKey

fn eq(&self, other: &RecordedForKey) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for RecordedForKey

impl Eq for RecordedForKey

impl StructuralPartialEq for RecordedForKey