Struct CapabilitySet 

pub struct CapabilitySet { /* private fields */ }

An explicit set of capabilities granted to a run.

Implementations

impl CapabilitySet

pub fn new() -> Self

Creates an empty capability set.

pub fn grant(&mut self, capability: CapabilityDescriptor)

Grants a capability, replacing a descriptor with the same identity.

pub fn revoke(&mut self, id: CapabilityId) -> Option<CapabilityDescriptor>

Revokes a capability by identity.

pub fn get(&self, id: CapabilityId) -> Option<&CapabilityDescriptor>

Returns a granted capability.

pub fn contains(&self, id: CapabilityId) -> bool

Returns whether the set contains a capability.

pub fn is_subset_of(&self, authority: &Self) -> bool

Returns whether every capability in this set is also granted by authority.

pub fn first_missing_from( &self, authority: &Self, ) -> Option<&CapabilityDescriptor>

Returns the first capability not granted by authority.

pub fn iter(&self) -> impl Iterator<Item = &CapabilityDescriptor>

Iterates over granted capabilities.

pub fn len(&self) -> usize

Returns the number of granted capabilities.

pub fn is_empty(&self) -> bool

Returns whether no capabilities are granted.

Trait Implementations

impl Clone for CapabilitySet

fn clone(&self) -> CapabilitySet

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CapabilitySet

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

Formats the value using the given formatter.

impl Default for CapabilitySet

fn default() -> CapabilitySet

Returns the “default value” for a type.