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lower_pattern_unadjusted: cleanup Tuple(..) branch.

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This commit is contained in:
Mazdak Farrokhzad 2019-12-19 22:51:32 +01:00
parent 3b0af1d87d
commit be6381e9e0
1 changed files with 12 additions and 14 deletions
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26
src/librustc_mir/hair/pattern/mod.rs
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@ -557,21 +557,19 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> {
}
hir::PatKind::Tuple(ref subpatterns, ddpos) => {
match ty.kind {
ty::Tuple(ref tys) => {
let subpatterns =
subpatterns.iter()
.enumerate_and_adjust(tys.len(), ddpos)
.map(|(i, subpattern)| FieldPat {
field: Field::new(i),
pattern: self.lower_pattern(subpattern)
})
.collect();
PatKind::Leaf { subpatterns }
}
let tys = match ty.kind {
ty::Tuple(ref tys) => tys,
_ => span_bug!(pat.span, "unexpected type for tuple pattern: {:?}", ty),
}
};
let subpatterns = subpatterns
.iter()
.enumerate_and_adjust(tys.len(), ddpos)
.map(|(i, subpattern)| FieldPat {
field: Field::new(i),
pattern: self.lower_pattern(subpattern)
})
.collect();
PatKind::Leaf { subpatterns }
}
hir::PatKind::Binding(_, id, ident, ref sub) => {