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Adjusted PR to better match project's coding style.

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This commit is contained in:
Vincent Esche 2016-01-22 17:13:17 +01:00
parent 70692ce279
commit 2c7a19a10d
1 changed files with 38 additions and 40 deletions
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12
src/librustc/middle/check_match.rs
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@ -616,7 +616,8 @@ fn missing_constructors(cx: &MatchCheckCtxt, &Matrix(ref rows): &Matrix,
.collect();
all_constructors(cx, left_ty, max_slice_length)
.into_iter()
.filter(|c| !used_constructors.contains(c)).collect()
.filter(|c| !used_constructors.contains(c))
.collect()
}
/// This determines the set of all possible constructors of a pattern matching
@ -695,8 +696,8 @@ fn is_useful(cx: &MatchCheckCtxt,
let constructors = pat_constructors(cx, v[0], left_ty, max_slice_length);
if constructors.is_empty() {
match &missing_constructors(cx, matrix, left_ty, max_slice_length)[..] {
[] => {
let constructors = missing_constructors(cx, matrix, left_ty, max_slice_length);
if constructors.is_empty() {
all_constructors(cx, left_ty, max_slice_length).into_iter().map(|c| {
match is_useful_specialized(cx, matrix, v, c.clone(), left_ty, witness) {
UsefulWithWitness(pats) => UsefulWithWitness({
@ -714,9 +715,7 @@ fn is_useful(cx: &MatchCheckCtxt,
result => result
}
}).find(|result| result != &NotUseful).unwrap_or(NotUseful)
},
[constructors..] => {
} else {
let matrix = rows.iter().filter_map(|r| {
if pat_is_binding_or_wild(&cx.tcx.def_map.borrow(), raw_pat(r[0])) {
Some(r[1..].to_vec())
@ -737,7 +736,6 @@ fn is_useful(cx: &MatchCheckCtxt,
result => result
}
}
}
} else {
constructors.into_iter().map(|c|
is_useful_specialized(cx, matrix, v, c.clone(), left_ty, witness)