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Tighten some code

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greg 2018-03-08 00:32:19 -08:00
parent 2e80045750
commit 367719d408
1 changed files with 2 additions and 3 deletions
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5
src/schala_lang/eval.rs
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@ -175,14 +175,13 @@ impl<'a> State<'a> {
} }
self.eval_application(*f, evaled_arguments) self.eval_application(*f, evaled_arguments)
}, },
Index { box indexee, mut indexers } => { Index { box indexee, indexers } => {
let evaled = self.eval_expr(indexee)?; let evaled = self.eval_expr(indexee)?;
match evaled { match evaled {
Tuple(mut exprs) => { Tuple(mut exprs) => {
let len = indexers.len(); let len = indexers.len();
if len == 1 { if len == 1 {
indexers.truncate(1); let idx = indexers.into_iter().nth(0).unwrap();
let idx = indexers.pop().unwrap();
match self.eval_expr(idx)? { match self.eval_expr(idx)? {
UnsignedInt(n) if (n as usize) < exprs.len() => Ok(exprs.drain(n as usize..).next().unwrap()), UnsignedInt(n) if (n as usize) < exprs.len() => Ok(exprs.drain(n as usize..).next().unwrap()),
UnsignedInt(n) => Err(format!("Index {} out of range", n)), UnsignedInt(n) => Err(format!("Index {} out of range", n)),