Enum EntryMetaValue 

pub enum EntryMetaValue {
    Null,
    Bool(bool),
    Int(i64),
    Float(f64),
    String(Arc<str>),
    Bytes(Arc<[u8]>),
    Array(Arc<[Self]>),
    Object(Arc<BTreeMap<Arc<str>, Self>>),
}

A no_std-compatible JSON-like value for VectorEntry metadata.

All heap-owning variants wrap their payload in Arc so that cloning is O(1) (a reference-count bump), never O(n) (a deep copy).

Equality

All variants use structural equality except Float, which uses bit-exact comparison so that NaN == NaN (see module-level docs).

Variants

Null

JSON null.

Bool(bool)

JSON true / false.

Int(i64)

JSON integer, stored as i64.

Float(f64)

JSON number with fractional part.

Equality is bit-exact (f64::to_bits), not IEEE 754. NaN == NaN returns true here; see the module docs for rationale.

String(Arc<str>)

JSON string, reference-counted for O(1) clone.

Bytes(Arc<[u8]>)

Raw bytes (Python bytes values), reference-counted for O(1) clone.

Stored as a byte slice rather than base64-encoded string to preserve Python round-trip parity.

Array(Arc<[Self]>)

JSON array, reference-counted for O(1) clone.

Object(Arc<BTreeMap<Arc<str>, Self>>)

JSON object (key-ordered BTreeMap), reference-counted for O(1) clone.

Keys are Arc<str> for shared ownership; ordering is deterministic (lexicographic), which helps with test fixtures. HashMap is not used because it requires std’s default hasher.

Implementations

impl EntryMetaValue

pub fn string(s: &str) -> Self

Construct a String variant from any &str, allocating a new Arc.

pub fn bytes(b: &[u8]) -> Self

Construct a Bytes variant from a byte slice.

pub fn array(items: Vec<Self>) -> Self

Construct an Array variant from a Vec<EntryMetaValue>.

pub fn object(map: BTreeMap<Arc<str>, Self>) -> Self

Construct an Object variant from a BTreeMap.

pub const fn is_null(&self) -> bool

Returns true if this value is Null.

pub const fn as_bool(&self) -> Option<bool>

Returns the inner bool, or None if this is not a Bool variant.

pub const fn as_int(&self) -> Option<i64>

Returns the inner i64, or None if this is not an Int variant.

pub const fn as_float(&self) -> Option<f64>

Returns the inner f64, or None if this is not a Float variant.

pub fn as_str(&self) -> Option<&str>

Returns the inner Arc<str>, or None if this is not a String variant.

pub fn as_bytes(&self) -> Option<&[u8]>

Returns the inner bytes, or None if this is not a Bytes variant.

pub fn as_array(&self) -> Option<&[Self]>

Returns the inner array slice, or None if this is not an Array variant.

pub fn as_object(&self) -> Option<&BTreeMap<Arc<str>, Self>>

Returns the inner object map, or None if this is not an Object variant.

Trait Implementations

impl Clone for EntryMetaValue

fn clone(&self) -> EntryMetaValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EntryMetaValue

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

Formats the value using the given formatter.

impl From<&str> for EntryMetaValue

fn from(s: &str) -> Self

Converts to this type from the input type.

impl From<String> for EntryMetaValue

fn from(s: String) -> Self

Converts to this type from the input type.

impl From<bool> for EntryMetaValue

fn from(b: bool) -> Self

Converts to this type from the input type.

impl From<f32> for EntryMetaValue

fn from(f: f32) -> Self

Converts to this type from the input type.

impl From<f64> for EntryMetaValue

fn from(f: f64) -> Self

Converts to this type from the input type.

impl From<i32> for EntryMetaValue

fn from(i: i32) -> Self

Converts to this type from the input type.

impl From<i64> for EntryMetaValue

fn from(i: i64) -> Self

Converts to this type from the input type.

impl PartialEq for EntryMetaValue

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 Eq for EntryMetaValue

Eq is safe because float equality is bit-exact (NaN == NaN by bits).