Enum NanTag 

pub enum NanTag {
    F64,
    I48,
    Bool,
    None,
    Unit,
    Function,
    ModuleFunction,
    Heap,
    Ref,
}

Tag discriminator for ValueWord values.

Returned by ValueWord::tag() for fast type dispatch without materializing HeapValue.

Variants

F64

Inline f64 (not tagged — uses the full 64-bit IEEE 754 representation)

I48

Inline i48 (48-bit signed integer, covers [-2^47, 2^47-1])

Bool

Inline bool

None

None (null)

Unit

Unit (void return)

Function

Function reference (inline u16 function ID)

ModuleFunction

Module function reference (inline u32 index)

Heap

Heap-allocated HeapValue (String, Array, TypedObject, Closure, etc.)

Ref

Reference to a stack slot (absolute index, used for pass-by-reference)

Trait Implementations

impl Clone for NanTag

fn clone(&self) -> NanTag

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NanTag

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

Formats the value using the given formatter.

impl PartialEq for NanTag

fn eq(&self, other: &NanTag) -> 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 Copy for NanTag

impl Eq for NanTag

impl StructuralPartialEq for NanTag