Struct GrantSet 

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

A set of permissions.

Unordered and duplicate-free by construction, so equal permissions always produce an equal digest regardless of how the set was built.

Implementations

impl GrantSet

pub const EMPTY: Self

No permissions at all. The default, and the floor of the lattice.

pub fn new(atoms: impl IntoIterator<Item = GrantAtom>) -> Self

Build a set from atoms, discarding duplicates.

pub fn parse<'a>( atoms: impl IntoIterator<Item = &'a str>, ) -> Result<Self, GrantAtomParseError>

Parse a set from atom strings.

Errors

Returns the first GrantAtomParseError encountered.

pub fn is_empty(&self) -> bool

Whether this grants nothing.

pub fn len(&self) -> usize

How many distinct atoms this holds.

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

Iterate the atoms in a deterministic order.

pub fn contains_atom(&self, atom: &GrantAtom) -> bool

Whether this set contains exactly this atom.

This is literal membership, not the containment relation ⊑ — an atom may be permitted by a broader atom in the set without appearing in it. That question belongs to the grant lattice.

pub fn has_templates(&self) -> bool

Whether any atom carries an unresolved template.

Trait Implementations

impl Clone for GrantSet

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GrantSet

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

Formats the value using the given formatter.

impl Default for GrantSet

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for GrantSet

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for GrantSet

impl FromIterator<GrantAtom> for GrantSet

fn from_iter<I: IntoIterator<Item = GrantAtom>>(iter: I) -> Self

Creates a value from an iterator.

impl Hash for GrantSet

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'a> IntoIterator for &'a GrantSet

type Item = &'a GrantAtom

The type of the elements being iterated over.

type IntoIter = Iter<'a, GrantAtom>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl Ord for GrantSet

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for GrantSet

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for GrantSet

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for GrantSet

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for GrantSet