Struct trie_db::FatDB

source · [−]

pub struct FatDB<'db, H, C> where
    H: Hasher + 'db,
    C: NodeCodec<H>,  { /* private fields */ }

Expand description

A Trie implementation which hashes keys and uses a generic HashDB backing database. Additionaly it stores inserted hash-key mappings for later retrieval.

Use it as a Trie or TrieMut trait object.

Implementations

source

impl<'db, H, C> FatDB<'db, H, C> where
H: Hasher,
C: NodeCodec<H>,

source

pub fn new(
db: &'db dyn HashDBRef<H, DBValue>,
root: &'db H::Out
) -> Result<Self, H::Out, C::Error>

Create a new trie with the backing database db and empty root Initialise to the state entailed by the genesis block. This guarantees the trie is built correctly.

source

pub fn db(&self) -> &dyn HashDBRef<H, DBValue>

Get the backing database.

Trait Implementations

source

impl<'db, H, C> Trie<H, C> for FatDB<'db, H, C> where
H: Hasher,
C: NodeCodec<H>,

source

fn root(&self) -> &H::Out

Return the root of the trie.

source

fn contains(&self, key: &[u8 ]) -> Result<bool, H::Out, C::Error>

Does the trie contain a given key?

source

fn get_with<'a, 'key, Q: Query<H>>(
 &'a self,
 key: &'key [u8 ],
 query: Q
) -> Result<Option<Q::Item>, H::Out, C::Error> where
 'a: 'key,

Search for the key with the given query parameter. See the docs of the Query trait for more details. Read more

source

fn iter<'a>(
&'a self
) -> Result<Box<dyn TrieIterator<H, C, Item = TrieItem<'_, H::Out, C::Error>> + 'a>, <H as Hasher>::Out, C::Error>

Returns a depth-first iterator over the elements of trie.

source

fn is_empty(&self) -> bool

Is the trie empty?

source

fn get<'a, 'key>(
 &'a self,
 key: &'key [u8 ]
) -> Result<Option<DBValue>, H::Out, C::Error> where
 'a: 'key,

What is the value of the given key in this trie?

Auto Trait Implementations

impl<'db, H, C> !RefUnwindSafe for FatDB<'db, H, C>

impl<'db, H, C> !Send for FatDB<'db, H, C>

impl<'db, H, C> !Sync for FatDB<'db, H, C>

impl<'db, H, C> Unpin for FatDB<'db, H, C> where
C: Unpin,

impl<'db, H, C> !UnwindSafe for FatDB<'db, H, C>

Blanket Implementations

source

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

source

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

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

Mutably borrows from an owned value. Read more

source

impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

source

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

const: unstable · source

pub fn into(self) -> U

Calls U::from(self).

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

source

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

source

impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct trie_db::FatDB

Implementations

impl<'db, H, C> FatDB<'db, H, C> where
H: Hasher,
C: NodeCodec<H>,

pub fn new(
db: &'db dyn HashDBRef<H, DBValue>,
root: &'db H::Out
) -> Result<Self, H::Out, C::Error>

pub fn db(&self) -> &dyn HashDBRef<H, DBValue>

Trait Implementations

impl<'db, H, C> Trie<H, C> for FatDB<'db, H, C> where
H: Hasher,
C: NodeCodec<H>,

fn root(&self) -> &H::Out

fn contains(&self, key: &[u8 ]) -> Result<bool, H::Out, C::Error>

fn get_with<'a, 'key, Q: Query<H>>(
    &'a self,
    key: &'key [u8 ],
    query: Q
) -> Result<Option<Q::Item>, H::Out, C::Error> where
    'a: 'key,

fn iter<'a>(
&'a self
) -> Result<Box<dyn TrieIterator<H, C, Item = TrieItem<'_, H::Out, C::Error>> + 'a>, <H as Hasher>::Out, C::Error>

fn is_empty(&self) -> bool

fn get<'a, 'key>(
    &'a self,
    key: &'key [u8 ]
) -> Result<Option<DBValue>, H::Out, C::Error> where
    'a: 'key,

Auto Trait Implementations

impl<'db, H, C> !RefUnwindSafe for FatDB<'db, H, C>

impl<'db, H, C> !Send for FatDB<'db, H, C>

impl<'db, H, C> !Sync for FatDB<'db, H, C>

impl<'db, H, C> Unpin for FatDB<'db, H, C> where
C: Unpin,

impl<'db, H, C> !UnwindSafe for FatDB<'db, H, C>

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where
T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

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

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

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

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Struct trie_db::FatDB

Implementations

impl<'db, H, C> FatDB<'db, H, C> where H: Hasher, C: NodeCodec<H>,

pub fn new( db: &'db dyn HashDBRef<H, DBValue>, root: &'db H::Out) -> Result<Self, H::Out, C::Error>

pub fn db(&self) -> &dyn HashDBRef<H, DBValue>

Trait Implementations

impl<'db, H, C> Trie<H, C> for FatDB<'db, H, C> where H: Hasher, C: NodeCodec<H>,

fn root(&self) -> &H::Out

fn contains(&self, key: &[u8]) -> Result<bool, H::Out, C::Error>

fn get_with<'a, 'key, Q: Query<H>>( &'a self, key: &'key [u8], query: Q) -> Result<Option<Q::Item>, H::Out, C::Error> where 'a: 'key,

fn iter<'a>( &'a self) -> Result<Box<dyn TrieIterator<H, C, Item = TrieItem<'_, H::Out, C::Error>> + 'a>, <H as Hasher>::Out, C::Error>

fn is_empty(&self) -> bool

fn get<'a, 'key>( &'a self, key: &'key [u8]) -> Result<Option<DBValue>, H::Out, C::Error> where 'a: 'key,

Auto Trait Implementations

impl<'db, H, C> !RefUnwindSafe for FatDB<'db, H, C>

impl<'db, H, C> !Send for FatDB<'db, H, C>

impl<'db, H, C> !Sync for FatDB<'db, H, C>

impl<'db, H, C> Unpin for FatDB<'db, H, C> where C: Unpin,

impl<'db, H, C> !UnwindSafe for FatDB<'db, H, C>

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

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

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<'db, H, C> FatDB<'db, H, C> where
H: Hasher,
C: NodeCodec<H>,

pub fn new(
db: &'db dyn HashDBRef<H, DBValue>,
root: &'db H::Out
) -> Result<Self, H::Out, C::Error>

impl<'db, H, C> Trie<H, C> for FatDB<'db, H, C> where
H: Hasher,
C: NodeCodec<H>,

fn contains(&self, key: &[u8 ]) -> Result<bool, H::Out, C::Error>

fn get_with<'a, 'key, Q: Query<H>>(
&'a self,
key: &'key [u8 ],
query: Q
) -> Result<Option<Q::Item>, H::Out, C::Error> where
'a: 'key,

fn iter<'a>(
&'a self
) -> Result<Box<dyn TrieIterator<H, C, Item = TrieItem<'_, H::Out, C::Error>> + 'a>, <H as Hasher>::Out, C::Error>

fn get<'a, 'key>(
&'a self,
key: &'key [u8 ]
) -> Result<Option<DBValue>, H::Out, C::Error> where
'a: 'key,

impl<'db, H, C> Unpin for FatDB<'db, H, C> where
C: Unpin,

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

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

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,