Enum HeapObject 

pub enum HeapObject {
    String(String),
    Path(String),
    List(Vec<NanBox>),
    Attrs(BTreeMap<Symbol, NanBox>),
    Closure(VMClosure),
    Builtin(VMBuiltin),
    Thunk(VMThunk),
    HigherOrderBuiltin(HigherOrderBuiltin),
    BigInt(i64),
}

Heap-allocated object referenced by a NanBox pointer tag.

Contains the non-scalar VM value types: String, Path, List, Attrs, Closure, Builtin, and Thunk.

BigInt is a special case: it holds an i64 value that doesn’t fit in NanBox’s 48-bit tagged payload. CppNix uses int64_t for every Nix integer; without this heap fallback NanBox::int would silently demote out-of-range values to f64, losing precision and breaking arithmetic identity.

Variants

String(String)

Path(String)

List(Vec<NanBox>)

Attrs(BTreeMap<Symbol, NanBox>)

Closure(VMClosure)

Builtin(VMBuiltin)

Thunk(VMThunk)

HigherOrderBuiltin(HigherOrderBuiltin)

BigInt(i64)

Trait Implementations

impl Clone for HeapObject

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.