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validate code after unreachable

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This commit is contained in:
Svyatoslav Nikolsky
2017-06-08 15:40:08 +03:00
parent 6eae241656
commit 5a84fa01f8
6 changed files with 355 additions and 231 deletions
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6
src/interpreter/stack.rs
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@ -44,6 +44,12 @@ impl<T> StackWithLimit<T> where T: Clone {
.ok_or(Error::Stack("non-empty stack expected".into()))
}
pub fn top_mut(&mut self) -> Result<&mut T, Error> {
self.values
.back_mut()
.ok_or(Error::Stack("non-empty stack expected".into()))
}
pub fn get(&self, index: usize) -> Result<&T, Error> {
if index >= self.values.len() {
return Err(Error::Stack(format!("trying to get value at position {} on stack of size {}", index, self.values.len())));