pub enum ChildInfo {
    ParentKeyId(ChildTrieParentKeyId),
}
Expand description

Information related to a child state.

Variants§

§

ParentKeyId(ChildTrieParentKeyId)

This is the one used by default.

Implementations§

source§

impl ChildInfo

source

pub fn new_default(storage_key: &[u8]) -> Self

Instantiates child information for a default child trie of kind ChildType::ParentKeyId, using an unprefixed parent storage key.

source

pub fn new_default_from_vec(storage_key: Vec<u8>) -> Self

Same as new_default but with Vec<u8> as input.

source

pub fn try_update(&mut self, other: &ChildInfo) -> bool

Try to update with another instance, return false if both instance are not compatible.

source

pub fn keyspace(&self) -> &[u8]

Returns byte sequence (keyspace) that can be use by underlying db to isolate keys. This is a unique id of the child trie. The collision resistance of this value depends on the type of child info use. For ChildInfo::Default it is and need to be.

source

pub fn storage_key(&self) -> &[u8]

Returns a reference to the location in the direct parent of this trie but without the common prefix for this kind of child trie.

source

pub fn prefixed_storage_key(&self) -> PrefixedStorageKey

Return a the full location in the direct parent of this trie.

source

pub fn into_prefixed_storage_key(self) -> PrefixedStorageKey

Returns a the full location in the direct parent of this trie.

source

pub fn child_type(&self) -> ChildType

Returns the type for this child info.

Trait Implementations§

source§

impl Clone for ChildInfo

source§

fn clone(&self) -> ChildInfo

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl Debug for ChildInfo

source§

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

Formats the value using the given formatter. Read more
source§

impl Decode for ChildInfo

source§

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy ) -> Result<Self, Error>

Attempt to deserialise the value from input.
source§

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self> ) -> Result<DecodeFinished, Error>
where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory. Read more
source§

fn skip<I>(input: &mut I) -> Result<(), Error>
where I: Input,

Attempt to skip the encoded value from input. Read more
source§

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type. Read more
source§

impl Encode for ChildInfo

source§

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding. Read more
source§

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy )

Convert self to a slice and append it to the destination.
source§

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.
source§

fn using_encoded<R, F>(&self, f: F) -> R
where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.
source§

fn encoded_size(&self) -> usize

Calculates the encoded size. Read more
source§

impl Hash for ChildInfo

source§

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
source§

impl Ord for ChildInfo

source§

fn cmp(&self, other: &ChildInfo) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 · source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 · source§

fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 · source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
source§

impl PartialEq for ChildInfo

source§

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

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

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.
source§

impl PartialOrd for ChildInfo

source§

fn partial_cmp(&self, other: &ChildInfo) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

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

This method tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

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

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

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

This method tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

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

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
source§

impl EncodeLike for ChildInfo

source§

impl Eq for ChildInfo

source§

impl StructuralPartialEq for ChildInfo

Auto Trait Implementations§

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

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

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> DecodeAll for T
where T: Decode,

source§

fn decode_all(input: &mut &[u8]) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more
source§

impl<T> DecodeLimit for T
where T: Decode,

source§

fn decode_all_with_depth_limit( limit: u32, input: &mut &[u8] ) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more
source§

fn decode_with_depth_limit<I>(limit: u32, input: &mut I) -> Result<T, Error>
where I: Input,

Decode Self with the given maximum recursion depth and advance input by the number of bytes consumed. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

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

source§

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> KeyedVec for T
where T: Codec,

source§

fn to_keyed_vec(&self, prepend_key: &[u8]) -> Vec<u8>

Return an encoding of Self prepended by given slice.
source§

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

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

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

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

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

Performs the conversion.
source§

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

§

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

The type returned in the event of a conversion error.
source§

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

Performs the conversion.
source§

impl<S> Codec for S
where S: Decode + Encode,

source§

impl<T> EncodeLike<&&T> for T
where T: Encode,

source§

impl<T> EncodeLike<&T> for T
where T: Encode,

source§

impl<T> EncodeLike<&mut T> for T
where T: Encode,

source§

impl<T> EncodeLike<Arc<T>> for T
where T: Encode,

source§

impl<T> EncodeLike<Box<T>> for T
where T: Encode,

source§

impl<'a, T> EncodeLike<Cow<'a, T>> for T
where T: ToOwned + Encode,

source§

impl<T> EncodeLike<Rc<T>> for T
where T: Encode,

source§

impl<S> FullCodec for S
where S: Decode + FullEncode,

source§

impl<S> FullEncode for S
where S: Encode + EncodeLike,