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cleanup

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This commit is contained in:
Folkert 2021-07-10 23:49:24 +02:00
parent e05753afd8
commit 78309f2607
3 changed files with 9 additions and 6 deletions
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9
compiler/mono/src/decision_tree.rs
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@ -228,13 +228,13 @@ fn to_decision_tree(raw_branches: Vec<Branch>) -> DecisionTree {
// get the `_decision_tree` without cloning
decision_edges.pop().unwrap().1
}
(_, []) => helper(path, decision_edges, None),
(_, []) => break_out_guard(path, decision_edges, None),
([], _) => {
// should be guaranteed by the patterns
debug_assert!(!fallback.is_empty());
to_decision_tree(fallback)
}
(_, _) => helper(
(_, _) => break_out_guard(
path,
decision_edges,
Some(Box::new(to_decision_tree(fallback))),
@ -244,7 +244,8 @@ fn to_decision_tree(raw_branches: Vec<Branch>) -> DecisionTree {
}
}
fn helper<'a>(
/// Give a guard it's own Decision
fn break_out_guard<'a>(
path: Vec<PathInstruction>,
mut edges: Vec<(GuardedTest<'a>, DecisionTree<'a>)>,
default: Option<Box<DecisionTree<'a>>>,
@ -261,7 +262,7 @@ fn helper<'a>(
Some(index) => {
let (a, b) = edges.split_at_mut(index + 1);
let new_default = helper(path.clone(), b.to_vec(), default);
let new_default = break_out_guard(path.clone(), b.to_vec(), default);
let mut left = a.to_vec();
let guard = left.pop().unwrap();