Struct SystemSets 

pub struct SystemSets { /* private fields */ }

Container for system sets in a schedule.

Implementations

impl SystemSets

pub fn len(&self) -> usize

Returns the number of system sets in this container.

pub fn is_empty(&self) -> bool

Returns true if this container is empty.

pub fn contains(&self, set: impl SystemSet) -> bool

Returns true if the given set is present in this container.

pub fn get(&self, key: SystemSetKey) -> Option<&(dyn SystemSet + 'static)>

Returns a reference to the system set with the given key, if it exists.

pub fn get_key(&self, set: Interned<dyn SystemSet>) -> Option<SystemSetKey>

Returns the key for the given system set, returns None if it does not exist.

pub fn get_key_or_insert( &mut self, set: Interned<dyn SystemSet>, ) -> SystemSetKey

Returns the key for the given system set, inserting it into this container if it does not already exist.

pub fn has_conditions(&self, key: SystemSetKey) -> bool

Returns true if the system set with the given key has conditions.

pub fn get_conditions( &self, key: SystemSetKey, ) -> Option<&[ConditionWithAccess]>

Returns a reference to the conditions for the system set with the given key, if it exists.

pub fn get_conditions_mut( &mut self, key: SystemSetKey, ) -> Option<&mut Vec<ConditionWithAccess>>

Returns a mutable reference to the conditions for the system set with the given key, if it exists.

pub fn iter( &self, ) -> impl Iterator<Item = (SystemSetKey, &(dyn SystemSet + 'static), &[ConditionWithAccess])>

Returns an iterator over all system sets in this container, along with their conditions.

pub fn insert( &mut self, set: Interned<dyn SystemSet>, new_conditions: Vec<Box<dyn ReadOnlySystem<Out = bool, In = ()>>>, ) -> SystemSetKey

Inserts conditions for a system set into the container, and queues the newly added conditions to be initialized later in SystemSets::initialize.

If the set was not already present in the container, it is added automatically.

We have to defer initialization of system set conditions in the container until we have &mut World access, so we store these in a list until SystemSets::initialize is called. This is usually done upon the first run of the schedule.

pub fn is_initialized(&self) -> bool

Returns true if all system sets’ conditions in this container have been initialized.

pub fn initialize(&mut self, world: &mut World)

Initializes all system sets’ conditions that have not been initialized yet. Because a system set’s conditions may be appended to multiple times, we track which conditions were added since the last initialization and only initialize those.

pub fn check_type_set_ambiguity( &self, set_systems: &DagGroups<SystemSetKey, SystemKey>, ambiguous_with: &Graph<false, NodeId>, dependency: &Graph<true, NodeId>, ) -> Result<(), SystemTypeSetAmbiguityError>

Ensures that there are no edges to system-type sets that have multiple instances.

Trait Implementations

impl Default for SystemSets

fn default() -> SystemSets

Returns the “default value” for a type.

impl Index<SystemSetKey> for SystemSets

type Output = dyn SystemSet

The returned type after indexing.

fn index( &self, key: SystemSetKey, ) -> &<SystemSets as Index<SystemSetKey>>::Output

Performs the indexing (container[index]) operation.