Struct wasmer_types::entity::SecondaryMap

pub struct SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone,  { /* fields omitted */ }

A mapping K -> V for densely indexed entity references.

The SecondaryMap data structure uses the dense index space to implement a map with a vector. Unlike PrimaryMap, an SecondaryMap can’t be used to allocate entity references. It is used to associate secondary information with entities.

The map does not track if an entry for a key has been inserted or not. Instead it behaves as if all keys have a default entry from the beginning.

Implementations

impl<K, V> SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone, 

Shared SecondaryMap implementation for all value types.

pub fn new() -> Self where
    V: Default, 

Create a new empty map.

pub fn with_capacity(capacity: usize) -> Self where
    V: Default, 

Create a new, empty map with the specified capacity.

The map will be able to hold exactly capacity elements without reallocating.

pub fn with_default(default: V) -> Self

Create a new empty map with a specified default value.

This constructor does not require V to implement Default.

pub fn capacity(&self) -> usize

Returns the number of elements the map can hold without reallocating.

pub fn get(&self, k: K) -> Option<&V>

Get the element at k if it exists.

pub fn is_empty(&self) -> bool

Is this map completely empty?

pub fn clear(&mut self)

Remove all entries from this map.

pub fn iter(&self) -> Iter<'_, K, V>

Iterate over all the keys and values in this map.

pub fn iter_mut(&mut self) -> IterMut<'_, K, V>

Iterate over all the keys and values in this map, mutable edition.

pub fn keys(&self) -> Keys<K>

Iterate over all the keys in this map.

pub fn values(&self) -> Iter<'_, V>

Iterate over all the values in this map.

pub fn values_mut(&mut self) -> IterMut<'_, V>

Iterate over all the values in this map, mutable edition.

pub fn resize(&mut self, n: usize)

Resize the map to have n entries by adding default entries as needed.

Trait Implementations

impl<K, V> Archive for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone,
    Vec<V>: Archive,
    V: Archive,
    PhantomData<K>: Archive, 

type Archived = ArchivedSecondaryMap<K, V>

The archived version of this type.

type Resolver = SecondaryMapResolver<K, V>

The resolver for this type. It must contain all the information needed to make the archived type from the normal type.

fn resolve(
    &self,
    pos: usize,
    resolver: Self::Resolver,
    out: &mut MaybeUninit<Self::Archived>
)

Creates the archived version of this value at the given position and writes it to the given output.

impl<K: Clone, V: Clone> Clone for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone, 

fn clone(&self) -> SecondaryMap<K, V>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<K: Debug, V: Debug> Debug for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone, 

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

Formats the value using the given formatter.

impl<K, V> Default for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone + Default, 

fn default() -> SecondaryMap<K, V>

Returns the “default value” for a type.

impl<'de, K, V> Deserialize<'de> for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone + Deserialize<'de>, 

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
    D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl<K, V> Index<K> for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone, 

Immutable indexing into an SecondaryMap.

All keys are permitted. Untouched entries have the default value.

type Output = V

The returned type after indexing.

fn index(&self, k: K) -> &V

Performs the indexing (container[index]) operation.

impl<K, V> IndexMut<K> for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone, 

Mutable indexing into an SecondaryMap.

The map grows as needed to accommodate new keys.

fn index_mut(&mut self, k: K) -> &mut V

Performs the mutable indexing (container[index]) operation.

impl<K, V> MemoryUsage for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone + MemoryUsage, 

fn size_of_val(&self, tracker: &mut dyn MemoryUsageTracker) -> usize

Returns the size of the referenced value in bytes.

impl<K, V> PartialEq<SecondaryMap<K, V>> for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone + PartialEq, 

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

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

#[must_use]

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

This method tests for !=.

impl<K, V> Serialize for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone + PartialEq + Serialize, 

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where
    S: Serializer, 

Serialize this value into the given Serde serializer.

impl<__S: Fallible + ?Sized, K, V> Serialize<__S> for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone,
    Vec<V>: Serialize<__S>,
    V: Serialize<__S>,
    PhantomData<K>: Serialize<__S>, 

fn serialize(&self, serializer: &mut __S) -> Result<Self::Resolver, __S::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.

impl<K, V> Eq for SecondaryMap<K, V> where
    K: EntityRef,
    V: Clone + PartialEq + Eq,