Method step

aiscript-vm/src/vm/state.rs:1160–1172

Runs the VM for a period of time controlled by the `fuel` parameter. Returns `Ok(false)` if the method has exhausted its fuel, but there is more work to do, and returns `Ok(true)` if no more progress can be made.

(&mut self, fuel: &mut Fuel)

    // Returns `Ok(false)` if the method has exhausted its fuel, but there is more work to
    // do, and returns `Ok(true)` if no more progress can be made.
    pub(super) fn step(&mut self, fuel: &mut Fuel) -> Result<Option<ReturnValue>, VmError> {
        loop {
            if let Some(result) = self.dispatch_next(0)? {
                return Ok(Some(ReturnValue::from(result)));
            }
            const FUEL_PER_STEP: i32 = 1;
            fuel.consume(FUEL_PER_STEP);

            if !fuel.should_continue() {
                return Ok(None);
            }
        }
    }

    fn capture_upvalue(&mut self, slot: usize) -> GcRefLock<'gc, UpvalueObj<'gc>> {
        let mut prev_upvalue = None;