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Implement unlabeled struct field pattern inference

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Marcus Klaas de Vries 2019-01-17 00:08:10 +01:00 • committed by Aleksey Kladov
parent 3340807bd2
commit ac216880f5
4 changed files with 26 additions and 47 deletions
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11
crates/ra_hir/src/expr.rs
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@ -332,7 +332,7 @@ impl_arena_id!(PatId);
#[derive(Debug, Clone, Eq, PartialEq)]
pub struct FieldPat {
pub(crate) name: Name,
pub(crate) pat: Option<PatId>,
pub(crate) pat: PatId,
}
/// Close relative to rustc's hir::PatKind
@ -393,7 +393,7 @@ impl Pat {
total_iter.map(|pat| *pat).for_each(f);
}
Pat::Struct { args, .. } => {
args.iter().filter_map(|a| a.pat).for_each(f);
args.iter().map(|f| f.pat).for_each(f);
}
}
}
@ -821,9 +821,10 @@ impl ExprCollector {
.expect("every struct should have a field list")
.field_pats()
.into_iter()
.map(|f| FieldPat {
name: Name::new(f.ident),
pat: f.pat.as_ref().map(|p| self.collect_pat(p)),
.map(|f| {
let name = Name::new(f.ident);
let pat = self.collect_pat(&*f.pat);
FieldPat { name, pat }
})
.collect();