Enum ObjectKey 

pub enum ObjectKey {
    Number(BigInt),
    String(String),
    Tuple(Tuple<ObjectKey>),
}

Key-comparable value which implements Eq and Hash.

Eure restricts map keys to three types — String, Number (BigInt), and Tuple<ObjectKey> — for practical and predictable behavior.

• Deterministic equality: These types provide stable, well-defined equality and hashing. Types like floats, null, or holes introduce ambiguous or platform-dependent comparison rules.

• Reliable round-tripping: Keys must serialize and deserialize without losing meaning. Strings, integers, and tuples have canonical and unambiguous textual forms.

• Tooling-friendly: This set balances expressiveness and simplicity, making keys easy to validate, index, and reason about across implementations.

Note: In key position, true, false, and null are parsed as string identifiers, not as boolean/null values. For example, a.true = true creates a key "true" with boolean value true.

Variants

Number(BigInt)

String(String)

Tuple(Tuple<ObjectKey>)

Trait Implementations

impl Clone for ObjectKey

fn clone(&self) -> ObjectKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ObjectKey

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

Formats the value using the given formatter.

impl Display for ObjectKey

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

Formats the value using the given formatter.

impl From<&str> for ObjectKey

fn from(s: &str) -> Self

Converts to this type from the input type.

impl From<BigInt> for ObjectKey

fn from(n: BigInt) -> Self

Converts to this type from the input type.

impl From<ObjectKey> for PartialObjectKey

fn from(key: ObjectKey) -> Self

Converts to this type from the input type.

impl From<String> for ObjectKey

fn from(s: String) -> Self

Converts to this type from the input type.

impl From<bool> for ObjectKey

fn from(b: bool) -> Self

Converts to this type from the input type.

impl From<i16> for ObjectKey

fn from(n: i16) -> Self

Converts to this type from the input type.

impl From<i32> for ObjectKey

fn from(n: i32) -> Self

Converts to this type from the input type.

impl From<i64> for ObjectKey

fn from(n: i64) -> Self

Converts to this type from the input type.

impl From<i8> for ObjectKey

fn from(n: i8) -> Self

Converts to this type from the input type.

impl From<isize> for ObjectKey

fn from(n: isize) -> Self

Converts to this type from the input type.

impl From<u16> for ObjectKey

fn from(n: u16) -> Self

Converts to this type from the input type.

impl From<u32> for ObjectKey

fn from(n: u32) -> Self

Converts to this type from the input type.

impl From<u64> for ObjectKey

fn from(n: u64) -> Self

Converts to this type from the input type.

impl From<u8> for ObjectKey

fn from(n: u8) -> Self

Converts to this type from the input type.

impl From<usize> for ObjectKey

fn from(n: usize) -> Self

Converts to this type from the input type.

impl Hash for ObjectKey

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 ObjectKey

fn cmp(&self, other: &ObjectKey) -> 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 ParseObjectKey<'_> for ObjectKey

fn from_object_key(key: &ObjectKey) -> Result<Self, ParseErrorKind>

Parse an object key from the given ObjectKey reference in the document.

fn from_extension_ident(ident: &Identifier) -> Result<Self, ParseErrorKind>

Parse a key from an extension identifier.

impl<'doc> ParseObjectKey<'doc> for &'doc ObjectKey

fn from_object_key(key: &'doc ObjectKey) -> Result<Self, ParseErrorKind>

Parse an object key from the given ObjectKey reference in the document.

fn from_extension_ident(_ident: &Identifier) -> Result<Self, ParseErrorKind>

Parse a key from an extension identifier.

impl PartialEq for ObjectKey

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

fn partial_cmp(&self, other: &ObjectKey) -> 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 TryFrom<PartialObjectKey> for ObjectKey

type Error = HoleKeyError

The type returned in the event of a conversion error.

fn try_from(key: PartialObjectKey) -> Result<Self, Self::Error>

Performs the conversion.

impl Eq for ObjectKey

impl StructuralPartialEq for ObjectKey