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-rw-r--r--crates/ra_hir_ty/src/infer/pat.rs21
-rw-r--r--crates/ra_hir_ty/src/tests/patterns.rs4
2 files changed, 11 insertions, 14 deletions
diff --git a/crates/ra_hir_ty/src/infer/pat.rs b/crates/ra_hir_ty/src/infer/pat.rs
index 3fe1a4abb..06b09af82 100644
--- a/crates/ra_hir_ty/src/infer/pat.rs
+++ b/crates/ra_hir_ty/src/infer/pat.rs
@@ -185,21 +185,18 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
185 self.write_pat_ty(pat, bound_ty); 185 self.write_pat_ty(pat, bound_ty);
186 return inner_ty; 186 return inner_ty;
187 } 187 }
188 Pat::Slice { prefix, slice, suffix } => { 188 Pat::Slice { prefix, slice: _slice, suffix } => {
189 if let Ty::Apply(ApplicationTy { ctor: TypeCtor::Slice, parameters }) = expected { 189 let ty = if let Ty::Apply(ApplicationTy { ctor: TypeCtor::Slice, parameters }) = expected {
190 match (prefix.as_slice(), slice, suffix.as_slice()) { 190 for pat_id in prefix.iter().chain(suffix) {
191 (prefix_pat_ids, None, []) => { 191 self.infer_pat(*pat_id, parameters.as_single(), default_bm);
192 for pat_id in prefix_pat_ids {
193 self.infer_pat(*pat_id, parameters.as_single(), default_bm);
194 }
195
196 Ty::apply_one(TypeCtor::Slice, parameters.as_single().clone())
197 },
198 _ => Ty::Unknown,
199 } 192 }
193
194 parameters.as_single().clone()
200 } else { 195 } else {
201 Ty::Unknown 196 Ty::Unknown
202 } 197 };
198
199 Ty::apply_one(TypeCtor::Slice, ty)
203 } 200 }
204 _ => Ty::Unknown, 201 _ => Ty::Unknown,
205 }; 202 };
diff --git a/crates/ra_hir_ty/src/tests/patterns.rs b/crates/ra_hir_ty/src/tests/patterns.rs
index 6a9413521..d8e95112f 100644
--- a/crates/ra_hir_ty/src/tests/patterns.rs
+++ b/crates/ra_hir_ty/src/tests/patterns.rs
@@ -53,8 +53,8 @@ fn test(x: &i32) {
53 [140; 141) 'g': {unknown} 53 [140; 141) 'g': {unknown}
54 [144; 145) 'e': {unknown} 54 [144; 145) 'e': {unknown}
55 [158; 205) 'if let... }': () 55 [158; 205) 'if let... }': ()
56 [165; 170) '[val]': {unknown} 56 [165; 170) '[val]': [{unknown}]
57 [173; 176) 'opt': {unknown} 57 [173; 176) 'opt': [{unknown}]
58 [177; 205) '{ ... }': () 58 [177; 205) '{ ... }': ()
59 [191; 192) 'h': {unknown} 59 [191; 192) 'h': {unknown}
60 [195; 198) 'val': {unknown} 60 [195; 198) 'val': {unknown}