Struct legion_core::query::Read

pub struct Read<T: Component>(_);

Reads a single entity data component type from a chunk.

Trait Implementations

impl<T: Component> Clone for Read<T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Component> Copy for Read<T>

impl<T: Debug + Component> Debug for Read<T>

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

Formats the value using the given formatter.

impl<T: Component> Default for Read<T>

fn default() -> Self

Returns the "default value" for a type.

impl<'a, T: Component> DefaultFilter for Read<T>

type Filter = EntityFilterTuple<ComponentFilter<T>, Passthrough, Passthrough>

The type of entity filter constructed.

fn filter() -> Self::Filter

constructs an entity filter.

impl<'a, T: Component> View<'a> for Read<T>

type Iter = RefIter<'a, T, Iter<'a, T>>

The iterator over the chunk data.

fn fetch(
    _: &'a ArchetypeData,
    chunk: &'a ComponentStorage,
    _: ChunkIndex,
    _: SetIndex
) -> Self::Iter

Pulls data out of a chunk.

fn validate() -> bool

Validates that the view does not break any component borrowing rules.

fn reads<D: Component>() -> bool

Determines if the view reads the specified data type.

fn writes<D: Component>() -> bool

Determines if the view writes to the specified data type.

fn validate_access(access: &ComponentAccess) -> bool

Determines if the given component access includes all permissions required by the view.

fn requires_permissions() -> Permissions<ComponentTypeId>

Returns the set of permissions required by the view.