match token.trim() {
"+" => {
let fst = self.pop()?;
let snd = self.pop()?;
self.push(snd + fst);
}
"-" => {
let fst = self.pop()?;
let snd = self.pop()?;
self.push(snd - fst);
}
"*" => {
let fst = self.pop()?;
let snd = self.pop()?;
self.push(snd * fst);
}
"/" => {
let fst = self.pop()?;
if fst == 0 {
return Err(Error::DivisionByZero);
}
let snd = self.pop()?;
self.push(snd / fst);
}
"OP_DUP" => {
let fst = self.pop()?;
self.push(fst);
self.push(fst);
}
"OP_DROP" => {
self.pop()?;
}
"OP_SWAP" => {
let fst = self.pop()?;
let snd = self.pop()?;
self.push(fst);
self.push(snd);
}
"OP_OVER" => {
let fst = self.pop()?;
let snd = self.pop()?;
self.push(snd);
self.push(fst);
self.push(snd);
}
":" => {
self.recorder = Recorder::default();
self.recorder.started = true;
}
_ => {
if let Ok(value) = token.parse::<i32>() {
self.push(value);
continue;
}
let program = self.ops.get(token).ok_or(Error::UnknownWord)?.clone();
self.eval(program)?;
}
}
}
if self.recorder.started {
return Err(Error::InvalidWord);
}
Ok(())
}

fn define_op<T: Into<String>>(&mut self, name: T, op: T) {
self.ops.insert(name.into(), op.into());
}

fn pop(&mut self) -> Result<Value, Error> {
self.stack.pop().ok_or(Error::StackUnderflow)
}

fn push(&mut self, value: Value) {
self.stack.push(value)
}
}

Спасибо, укрылся)

Это ты сам написал??)