Enum RevertToSlot 

pub enum RevertToSlot {
    Some(Uint<256, 4>),
    Destroyed,
}

So storage can have multiple types:

• Zero, on revert remove plain state.
• Value, on revert set this value
• Destroyed, should be removed on revert but on Revert set it as zero.

Note: It is completely different state if Storage is Zero or Some or if Storage was Destroyed.

Because if it is destroyed, previous values can be found in database or it can be zero.

Variants

Some(Uint<256, 4>)

Revert to this value.

Destroyed

Storage was destroyed.

Implementations

impl RevertToSlot

pub const fn to_previous_value(self) -> Uint<256, 4>

Returns the previous value to set on revert.

Trait Implementations

impl Clone for RevertToSlot

fn clone(&self) -> RevertToSlot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RevertToSlot

impl Debug for RevertToSlot

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for RevertToSlot

fn deserialize<__D>( __deserializer: __D, ) -> Result<RevertToSlot, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for RevertToSlot

impl Hash for RevertToSlot

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

where __H: Hasher,

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for RevertToSlot

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

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to #147781)

Restrict a value to a certain range.

impl PartialEq for RevertToSlot

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for RevertToSlot

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

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for RevertToSlot

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for RevertToSlot

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 40 bytes

Size for each variant:

• Some: 32 bytes
• Destroyed: 0 bytes