Enum ValueKind 

pub enum ValueKind {
    Lit(Literal),
    Set(Set),
    Record(Arc<BTreeMap<SmolStr, Value>>),
    ExtensionValue(Arc<RepresentableExtensionValue>),
}

This describes all the values which could be the dynamic result of evaluating an Expr. Cloning is O(1).

Variants

Lit(Literal)

anything that is a Literal can also be the dynamic result of evaluating an Expr

Set(Set)

Evaluating an Expr can result in a first-class set

Record(Arc<BTreeMap<SmolStr, Value>>)

Evaluating an Expr can result in a first-class anonymous record (keyed on String)

ExtensionValue(Arc<RepresentableExtensionValue>)

Evaluating an Expr can result in an extension value

Implementations

impl ValueKind

pub fn empty_set() -> Self

Create a new empty set

pub fn empty_record() -> Self

Create a new empty record

pub fn set(vals: impl IntoIterator<Item = Value>) -> Self

Create a set with the given Values as elements

pub fn set_of_lits(lits: impl IntoIterator<Item = Literal>) -> Self

Create a set with the given Literals as elements

pub fn record<K: Into<SmolStr>, V: Into<Value>>( pairs: impl IntoIterator<Item = (K, V)>, ) -> Self

Create a record with the given (key, value) pairs

pub fn record_arc(pairs: Arc<BTreeMap<SmolStr, Value>>) -> Self

Create a record with the given attributes/value mapping.

pub fn all_literal_uids(&self) -> HashSet<EntityUID>

All literal uids referenced by this value kind

Trait Implementations

impl BoundedDisplay for ValueKind

fn fmt(&self, f: &mut impl Write, n: Option<usize>) -> Result

Write self to the writer f, truncating set elements or key-value pairs if necessary based on n

fn fmt_bounded(&self, f: &mut impl Write, n: usize) -> Result

Convenience method, equivalent to fmt() with n as Some.

fn fmt_unbounded(&self, f: &mut impl Write) -> Result

Convenience method, equivalent to fmt() with n as None.

impl Clone for ValueKind

fn clone(&self) -> ValueKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValueKind

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

Formats the value using the given formatter.

impl Display for ValueKind

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

Formats the value using the given formatter.

impl<T: Into<Literal>> From<T> for ValueKind

Create a ValueKind directly from a Literal, or from anything that implements Into<Literal> (so Integer, &str, EntityUID, etc)

fn from(lit: T) -> Self

Converts to this type from the input type.

impl From<ValueKind> for Expr

fn from(v: ValueKind) -> Self

Converts to this type from the input type.

impl From<ValueKind> for RestrictedExpr

fn from(value: ValueKind) -> RestrictedExpr

Converts to this type from the input type.

impl<T: Into<Value>> From<Vec<T>> for ValueKind

Create a ValueKind directly from a Vec<Value>, or Vec<T> where T: Into<Value> (so Vec<Integer>, Vec<String>, etc)

fn from(v: Vec<T>) -> Self

Converts to this type from the input type.

impl Ord for ValueKind

fn cmp(&self, other: &ValueKind) -> 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.

impl PartialEq for ValueKind

fn eq(&self, other: &Self) -> 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 PartialOrd for ValueKind

fn partial_cmp(&self, other: &ValueKind) -> 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 StaticallyTyped for ValueKind

fn type_of(&self) -> Type

Get the object’s type

impl TryFrom<Expr> for ValueKind

type Error = NotValue

The type returned in the event of a conversion error.

fn try_from(expr: Expr) -> Result<Self, Self::Error>

Performs the conversion.

impl Eq for ValueKind