Method stack_pop

crates/vm/src/frame.rs:325–332

(&mut self)

    /// Pop a value from the evaluation stack.
    #[inline(always)]
    fn stack_pop(&mut self) -> Option<PyStackRef> {
        debug_assert!(self.stack_top > 0, "stack underflow");
        self.stack_top -= 1;
        let idx = self.nlocalsplus as usize + self.stack_top as usize;
        let data = self.data_as_mut_slice();
        let raw = core::mem::replace(&mut data[idx], 0);
        unsafe { core::mem::transmute::<usize, Option<PyStackRef>>(raw) }
    }

    /// Immutable view of the active stack as `Option<PyStackRef>` slice.
    #[inline(always)]