Struct SharedPermissions 

pub struct SharedPermissions(/* private fields */);

The permissions a host shares with what it hosts (an app, its components, a worker) and changes while they run: a role changed by the record’s owner, a grant revoked, a workspace’s participation. Every change goes through Self::set, which moves shared_revision on, so whatever derives something from shared permissions (which controls may run) derives it again only after a change, not on every frame.

Implementations

impl SharedPermissions

pub fn new(context: PermissionContext) -> SharedPermissions

Share context.

pub fn borrow(&self) -> Ref<'_, PermissionContext>

The permissions in force now, to read.

Panics

While a Self::set of the same permissions runs.

pub fn try_borrow(&self) -> Result<Ref<'_, PermissionContext>, BorrowError>

Self::borrow, or an error while a change of them runs.

Errors

While a Self::set or Self::update of the same permissions runs.

pub fn update<R>(&self, change: impl FnOnce(&mut PermissionContext) -> R) -> R

Change the permissions in force in place (a one-use grant spent).

pub fn get(&self) -> PermissionContext

The permissions in force now.

pub fn set(&self, context: PermissionContext)

Put context in force for everyone sharing these permissions.

pub fn ptr_eq(&self, other: &SharedPermissions) -> bool

Whether self and other are the same shared permissions.

pub fn downgrade(&self) -> WeakPermissions

A handle that does not keep the permissions shared.

Trait Implementations

impl Clone for SharedPermissions

fn clone(&self) -> SharedPermissions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SharedPermissions

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

Formats the value using the given formatter.

impl From<PermissionContext> for SharedPermissions

fn from(context: PermissionContext) -> SharedPermissions

Converts to this type from the input type.