Enum StackError 

pub enum StackError {
    Overflow {
        depth: usize,
        width: usize,
        limit: usize,
    },
    Underflow {
        depth: usize,
    },
    ZeroWidth {
        depth: usize,
    },
}

Exact failure evidence from a unit-accounted operand stack.

Variants

Overflow

A push would exceed the configured logical depth.

Fields

depth: usize

Occupied depth before the push.

width: usize

Logical width required by the pushed value.

limit: usize

Maximum logical depth.

Underflow

A pop was requested from an empty stack.

Fields

depth: usize

Occupied depth at the failed operation.

ZeroWidth

A width policy violated its contract by returning zero.

Fields

depth: usize

Occupied depth at which the invalid value was presented.

Trait Implementations

impl Clone for StackError

fn clone(&self) -> StackError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for StackError

impl Debug for StackError

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

Formats the value using the given formatter.

impl Eq for StackError

impl PartialEq for StackError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for StackError