Struct SharedNaNValue 

pub struct SharedNaNValue { /* private fields */ }

64-bit NaN-boxed value. Stores one of: f64, i32, u32, bool, nil, or OffsetPtr<T>. Discriminated via the IEEE 754 NaN bit pattern.

Implementations

impl SharedNaNValue

pub const NIL: Self

The nil value.

pub fn from_f64(v: f64) -> Self

Wrap an f64. NaN inputs are canonicalised to the positive canonical qNaN so the resulting bits never look boxed.

pub const fn from_i32(v: i32) -> Self

pub const fn from_u32(v: u32) -> Self

pub const fn from_bool(v: bool) -> Self

pub fn from_offset_ptr<T>(p: OffsetPtr<T>) -> Self

Wrap an OffsetPtr by storing its 32-bit index. The T parameter is type-erased; callers reconstruct it on extraction.

pub const fn from_raw(raw: u64) -> Self

Construct from raw bits. Useful for serialisation / cross-process passing.

pub const fn raw(self) -> u64

Get the raw u64 representation.

pub fn type_tag(self) -> NaNValueType

pub fn is_f64(self) -> bool

pub fn is_nil(self) -> bool

pub fn is_i32(self) -> bool

pub fn is_u32(self) -> bool

pub fn is_bool(self) -> bool

pub fn is_offset_ptr(self) -> bool

pub fn as_f64(self) -> Option<f64>

pub fn as_i32(self) -> Option<i32>

pub fn as_u32(self) -> Option<u32>

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

pub fn as_offset_ptr<T>(self) -> Option<OffsetPtr<T>>

Trait Implementations

impl Clone for SharedNaNValue

fn clone(&self) -> SharedNaNValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SharedNaNValue

impl Debug for SharedNaNValue

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

Formats the value using the given formatter.

impl Default for SharedNaNValue

fn default() -> Self

Returns the “default value” for a type.

impl Eq for SharedNaNValue

impl Hash for SharedNaNValue

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 PartialEq for SharedNaNValue

fn eq(&self, other: &SharedNaNValue) -> 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 StructuralPartialEq for SharedNaNValue