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Part of evaluation path for indexing done

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greg 2017-02-17 21:34:41 -08:00
parent 3911c45dde
commit 4da771036a
1 changed files with 16 additions and 2 deletions
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18
src/schala_lang/eval.rs
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@ -310,8 +310,22 @@ impl<'a> Evaluator<'a> {
}
}
}
Index(box expr, box index_expr) => {
(Null, None)
Index(mut expr, mut index_expr) => {
if index_expr.is_reducible() {
let mut side_effect = None;
take_mut::take(index_expr.as_mut(), |expr| { let (a, b) = self.reduce_expr(expr); side_effect = b; a});
return (Index(expr, index_expr), side_effect)
}
if expr.is_reducible() {
let mut side_effect = None;
take_mut::take(expr.as_mut(), |expr| { let (a, b) = self.reduce_expr(expr); side_effect = b; a});
return (Index(expr, index_expr), side_effect);
}
match expr {
_ => (Null, None)
}
}
}
}