Struct KeyComposer

Source
pub struct KeyComposer;
Expand description

Contains all rules related to storage key creation.

Implementations§

Source§

impl KeyComposer

Source

pub const fn concat(left: Key, right: Key) -> Key

Concatenate two Key into one during compilation.

Source

pub const fn from_str(str: &str) -> Key

Return the storage key from the supplied str.

Source

pub const fn from_bytes(bytes: &[u8]) -> Key

Returns the storage key from the supplied bytes.

Source

pub fn compute_key( struct_name: &str, variant_name: &str, field_name: &str, ) -> Result<Key, Error>

Evaluates the storage key of the field in the structure, variant or union.

  1. Compute the ASCII byte representation of struct_name and call it S.
  2. If variant_name is not empty then computes the ASCII byte representation and call it V. 1. Compute the ASCII byte representation of field_name and call it F. 1. Concatenate (S and F) or (S, V and F) using :: as separator and call it C. 1. The XXH32 hash of C is the storage key.
§Note
  • variant_name is empty for structures and unions.
  • if the field is unnamed then field_name is "{}" where {} is a number of the field.

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> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

§

impl<T> Instrument for T

§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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> IntoEither for T

Source§

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
§

impl<T, Outer> IsWrappedBy<Outer> for T
where Outer: AsRef<T> + AsMut<T> + From<T>, T: From<Outer>,

§

fn from_ref(outer: &Outer) -> &T

Get a reference to the inner from the outer.

§

fn from_mut(outer: &mut Outer) -> &mut T

Get a mutable reference to the inner from the outer.

Source§

impl<T> Same for T

Source§

type Output = T

Should always be Self
§

impl<T> SaturatedConversion for T

§

fn saturated_from<T>(t: T) -> Self
where Self: UniqueSaturatedFrom<T>,

Convert from a value of T into an equivalent instance of Self. Read more
§

fn saturated_into<T>(self) -> T
where Self: UniqueSaturatedInto<T>,

Consume self to return an equivalent value of T. Read more
Source§

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

Source§

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>,

Source§

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.
§

impl<S, T> UncheckedInto<T> for S
where T: UncheckedFrom<S>,

§

fn unchecked_into(self) -> T

The counterpart to unchecked_from.
§

impl<T, S> UniqueSaturatedInto<T> for S
where T: Bounded, S: TryInto<T>,

§

fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.
§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

§

fn vzip(self) -> V

§

impl<T> WithSubscriber for T

§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
§

impl<T> JsonSchemaMaybe for T