Enum ScopeValue 

pub enum ScopeValue {
    Wildcard,
    Set(BTreeSet<String>),
    Single(String),
}

One dimension’s value in the scope lattice. The default is ScopeValue::Wildcard: an unconstrained dimension.

Variants

Wildcard

Unconstrained — the top of the lattice.

Set(BTreeSet<String>)

One of a finite set of values.

Single(String)

Exactly one value — the bottom of the lattice.

Implementations

impl ScopeValue

pub fn narrows_within(&self, parent: &ScopeValue) -> bool

Returns true when self is a subset of (or equal to) parent in the lattice: wildcard encompasses anything; a set encompasses its subsets and singles; a single encompasses only itself.

Trait Implementations

impl Clone for ScopeValue

fn clone(&self) -> ScopeValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScopeValue

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

Formats the value using the given formatter.

impl Default for ScopeValue

fn default() -> ScopeValue

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ScopeValue

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ScopeValue

impl PartialEq for ScopeValue

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ScopeValue

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 ScopeValue