Enum ScalarValue 

pub enum ScalarValue {
    Int(i64),
    Bool(bool),
    Float(f64),
    Char(char),
    Byte(u8),
}

One scalar payload read out of a debug slot, decoded under the slot’s DebugSlotKind.

The point of the type is what it does not have: no pointer, no GcRef, no descriptor. A consumer holding one of these cannot reach the heap through it, which is why DebugValue is safe to hand to the crash-snapshot walker, the renderer and the collector’s post-sweep scan alike.

Variants

Int(i64)

Bool(bool)

Float(f64)

Char(char)

Byte(u8)

Trait Implementations

impl Clone for ScalarValue

fn clone(&self) -> ScalarValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ScalarValue

impl Debug for ScalarValue

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

Formats the value using the given formatter.

impl Display for ScalarValue

Render a payload the way the object it came out of would have rendered.

The text must match, and that is the requirement rather than a nicety: ADR-120 part 2 exists so a user cannot tell which temps the optimizer kept a box for, and a Float that printed 3 here and 3.0 through crate::scalars::FLOAT’s format would give the answer away. So this lives beside those callbacks — write_float is literally the one FLOAT.format calls (ADR-083’s .0 rule) — rather than in the debugger’s renderer, which is the crate that would have had to guess.

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

Formats the value using the given formatter.

impl PartialEq for ScalarValue

fn eq(&self, other: &ScalarValue) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ScalarValue