Enum CanonicalKey 

pub enum CanonicalKey {
    Atom(&'static str),
    Bool(&'static str, bool),
    Bytes(&'static str, Vec<u8>),
    String(&'static str, String),
    Symbol(&'static str, Symbol),
    Pair(&'static str, String, String),
    Compound(&'static str, Vec<CanonicalKey>),
    CompoundNamed(&'static str, Vec<(String, CanonicalKey)>),
}

A normalized, comparable key derived from an Expr.

Backs canonical equality and hashing: structurally equal expressions (modulo map/set ordering) produce equal keys. Each variant tags its shape with a static label so unlike shapes never collide.

Variants

Atom(&'static str)

A tagged atom with no payload.

Bool(&'static str, bool)

A tagged boolean.

Bytes(&'static str, Vec<u8>)

Tagged raw bytes.

String(&'static str, String)

A tagged string.

Symbol(&'static str, Symbol)

A tagged symbol.

Pair(&'static str, String, String)

A tagged pair of strings.

Compound(&'static str, Vec<CanonicalKey>)

A tagged ordered sequence of sub-keys.

CompoundNamed(&'static str, Vec<(String, CanonicalKey)>)

A tagged sequence of name/sub-key pairs.

Trait Implementations

impl Clone for CanonicalKey

fn clone(&self) -> CanonicalKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CanonicalKey

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

Formats the value using the given formatter.

impl Eq for CanonicalKey

impl Hash for CanonicalKey

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 Ord for CanonicalKey

fn cmp(&self, other: &CanonicalKey) -> 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 CanonicalKey

fn eq(&self, other: &CanonicalKey) -> 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 CanonicalKey

fn partial_cmp(&self, other: &CanonicalKey) -> 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 StructuralPartialEq for CanonicalKey