diff options
Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/tests/ui/pattern_type_mismatch/pattern_tuples.rs | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/pattern_type_mismatch/pattern_tuples.rs b/src/tools/clippy/tests/ui/pattern_type_mismatch/pattern_tuples.rs new file mode 100644 index 000000000..19504a051 --- /dev/null +++ b/src/tools/clippy/tests/ui/pattern_type_mismatch/pattern_tuples.rs @@ -0,0 +1,57 @@ +#![allow(clippy::all)] +#![warn(clippy::pattern_type_mismatch)] + +fn main() {} + +fn tuple_types() { + struct TupleStruct<'a>(&'a Option<i32>); + let ref_value = &TupleStruct(&Some(42)); + + // not ok + let TupleStruct(_) = ref_value; + if let &TupleStruct(Some(_)) = ref_value {} + if let TupleStruct(Some(_)) = *ref_value {} + + // ok + let &TupleStruct(_) = ref_value; + let TupleStruct(_) = *ref_value; + if let &TupleStruct(&Some(_)) = ref_value {} + if let TupleStruct(&Some(_)) = *ref_value {} +} + +fn tuple_enum_variants() { + enum TupleEnum<'a> { + Empty, + Var(&'a Option<i32>), + } + let ref_value = &TupleEnum::Var(&Some(42)); + + // not ok + if let TupleEnum::Var(_) = ref_value {} + if let &TupleEnum::Var(Some(_)) = ref_value {} + if let TupleEnum::Var(Some(_)) = *ref_value {} + if let TupleEnum::Empty = ref_value {} + + // ok + if let &TupleEnum::Var(_) = ref_value {} + if let TupleEnum::Var(_) = *ref_value {} + if let &TupleEnum::Var(&Some(_)) = ref_value {} + if let TupleEnum::Var(&Some(_)) = *ref_value {} + if let &TupleEnum::Empty = ref_value {} + if let TupleEnum::Empty = *ref_value {} +} + +fn plain_tuples() { + let ref_value = &(&Some(23), &Some(42)); + + // not ok + let (_a, _b) = ref_value; + if let &(_a, Some(_)) = ref_value {} + if let (_a, Some(_)) = *ref_value {} + + // ok + let &(_a, _b) = ref_value; + let (_a, _b) = *ref_value; + if let &(_a, &Some(_)) = ref_value {} + if let (_a, &Some(_)) = *ref_value {} +} |