Enum trie_db::node::Node

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pub enum Node<'a> {
    Empty,
    Leaf(NibbleSlice<'a>, Value<'a>),
    Extension(NibbleSlice<'a>, NodeHandle<'a>),
    Branch([Option<NodeHandle<'a>>; 16], Option<Value<'a>>),
    NibbledBranch(NibbleSlice<'a>, [Option<NodeHandle<'a>>; 16], Option<Value<'a>>),
}
Expand description

Type of node in the trie and essential information thereof.

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Empty

Null trie node; could be an empty root or an empty branch entry.

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Leaf(NibbleSlice<'a>, Value<'a>)

Leaf node; has key slice and value. Value may not be empty.

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Extension(NibbleSlice<'a>, NodeHandle<'a>)

Extension node; has key slice and node data. Data may not be null.

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Branch([Option<NodeHandle<'a>>; 16], Option<Value<'a>>)

Branch node; has slice of child nodes (each possibly null) and an optional immediate node data.

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NibbledBranch(NibbleSlice<'a>, [Option<NodeHandle<'a>>; 16], Option<Value<'a>>)

Branch node with support for a nibble (when extension nodes are not used).

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impl Node<'_>

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pub fn to_owned_node<L: TrieLayout>( &self ) -> Result<NodeOwned<TrieHash<L>>, TrieHash<L>, CError<L>>

Converts this node into a NodeOwned.

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impl<'a> Clone for Node<'a>

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fn clone(&self) -> Node<'a>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'a> Debug for Node<'a>

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

Formats the value using the given formatter. Read more
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impl<'a> PartialEq for Node<'a>

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fn eq(&self, other: &Node<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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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.
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impl<'a> Eq for Node<'a>

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impl<'a> StructuralPartialEq for Node<'a>

Auto Trait Implementations§

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impl<'a> Freeze for Node<'a>

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impl<'a> RefUnwindSafe for Node<'a>

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impl<'a> Send for Node<'a>

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impl<'a> Sync for Node<'a>

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impl<'a> Unpin for Node<'a>

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impl<'a> UnwindSafe for Node<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> MaybeDebug for T
where T: Debug,