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Fix error spans for arguments to tuple enum constructors
This commit is contained in:
Nathan Fenner
parent
2566b4105d
commit
f0212e6532
@ -714,12 +714,19 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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self.tcx.parent(expr_ctor_def_id)
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}
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hir::def::DefKind::Ctor(hir::def::CtorOf::Variant, hir::def::CtorKind::Fn) => {
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if in_ty_adt.did() == self.tcx.parent(expr_ctor_def_id) {
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// The constructor definition refers to the variant:
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// For example, for a local type `MyEnum::MyVariant` triggers this case.
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expr_ctor_def_id
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} else if in_ty_adt.did() == self.tcx.parent(self.tcx.parent(expr_ctor_def_id))
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{
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// For a typical enum like
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// `enum Blah<T> { Variant(T) }`
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// we get the following resolutions:
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// - expr_ctor_def_id ::: DefId(0:29 ~ source_file[b442]::Blah::Variant::{constructor#0})
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// - self.tcx.parent(expr_ctor_def_id) ::: DefId(0:28 ~ source_file[b442]::Blah::Variant)
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// - self.tcx.parent(self.tcx.parent(expr_ctor_def_id)) ::: DefId(0:26 ~ source_file[b442]::Blah)
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// Therefore, we need to go up once to obtain the variant and up twice to obtain the type.
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// Note that this pattern still holds even when we `use` a variant or `use` an enum type to rename it, or chain `use` expressions
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// together; this resolution is handled automatically by `qpath_res`.
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// FIXME: Deal with type aliases?
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if in_ty_adt.did() == self.tcx.parent(self.tcx.parent(expr_ctor_def_id)) {
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// The constructor definition refers to the "constructor" of the variant:
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// For example, `Some(5)` triggers this case.
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self.tcx.parent(expr_ctor_def_id)
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@ -24,6 +24,31 @@ impl<'a, A: T1> T1 for &'a A {}
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fn want<V: T1>(_x: V) {}
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enum ExampleTuple<T> {
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ExampleTupleVariant(T),
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}
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use ExampleDifferentTupleVariantName as ExampleYetAnotherTupleVariantName;
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use ExampleTuple as ExampleOtherTuple;
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use ExampleTuple::ExampleTupleVariant as ExampleDifferentTupleVariantName;
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use ExampleTuple::*;
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impl<A> T1 for ExampleTuple<A> where A: T3 {}
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enum ExampleStruct<T> {
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ExampleStructVariant { field: T },
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}
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use ExampleDifferentStructVariantName as ExampleYetAnotherStructVariantName;
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use ExampleStruct as ExampleOtherStruct;
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use ExampleStruct::ExampleStructVariant as ExampleDifferentStructVariantName;
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use ExampleStruct::*;
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impl<A> T1 for ExampleStruct<A> where A: T3 {}
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struct ExampleActuallyTupleStruct<T>(T, i32);
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use ExampleActuallyTupleStruct as ExampleActuallyTupleStructOther;
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impl<A> T1 for ExampleActuallyTupleStruct<A> where A: T3 {}
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fn example<Q>(q: Q) {
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want(Wrapper { value: Burrito { filling: q } });
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//~^ ERROR the trait bound `Q: T3` is not satisfied [E0277]
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@ -36,6 +61,42 @@ fn example<Q>(q: Q) {
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want(&Some(q));
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//~^ ERROR `Q` is not an iterator [E0277]
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want(&ExampleTuple::ExampleTupleVariant(q));
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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want(&ExampleTupleVariant(q));
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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want(&ExampleOtherTuple::ExampleTupleVariant(q));
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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want(&ExampleDifferentTupleVariantName(q));
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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want(&ExampleYetAnotherTupleVariantName(q));
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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want(&ExampleStruct::ExampleStructVariant { field: q });
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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want(&ExampleStructVariant { field: q });
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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want(&ExampleOtherStruct::ExampleStructVariant { field: q });
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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want(&ExampleDifferentStructVariantName { field: q });
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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want(&ExampleYetAnotherStructVariantName { field: q });
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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want(&ExampleActuallyTupleStruct(q, 0));
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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want(&ExampleActuallyTupleStructOther(q, 0));
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//~^ ERROR `Q: T3` is not satisfied [E0277]
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}
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fn main() {}
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@ -1,5 +1,5 @@
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:28:46
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--> $DIR/blame-trait-error.rs:53:46
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LL | want(Wrapper { value: Burrito { filling: q } });
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| ---- ^ the trait `T3` is not implemented for `Q`
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@ -31,7 +31,7 @@ LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: `()` is not an iterator
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--> $DIR/blame-trait-error.rs:31:15
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--> $DIR/blame-trait-error.rs:56:15
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LL | want(Some(()));
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| ---- ^^ `()` is not an iterator
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@ -54,7 +54,7 @@ LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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error[E0277]: `Q` is not an iterator
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--> $DIR/blame-trait-error.rs:34:15
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--> $DIR/blame-trait-error.rs:59:15
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LL | want(Some(q));
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| ---- ^ `Q` is not an iterator
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@ -79,7 +79,7 @@ LL | fn example<Q: std::iter::Iterator>(q: Q) {
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| +++++++++++++++++++++
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error[E0277]: `Q` is not an iterator
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--> $DIR/blame-trait-error.rs:37:16
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--> $DIR/blame-trait-error.rs:62:16
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LL | want(&Some(q));
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| ---- ^ `Q` is not an iterator
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@ -105,6 +105,298 @@ help: consider restricting type parameter `Q`
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LL | fn example<Q: std::iter::Iterator>(q: Q) {
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| +++++++++++++++++++++
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error: aborting due to 4 previous errors
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:65:45
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LL | want(&ExampleTuple::ExampleTupleVariant(q));
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| ---- ^ the trait `T3` is not implemented for `Q`
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| |
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| required by a bound introduced by this call
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note: required for `ExampleTuple<Q>` to implement `T1`
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--> $DIR/blame-trait-error.rs:35:9
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LL | impl<A> T1 for ExampleTuple<A> where A: T3 {}
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| ^^ ^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
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= note: 1 redundant requirement hidden
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= note: required for `&ExampleTuple<Q>` to implement `T1`
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note: required by a bound in `want`
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--> $DIR/blame-trait-error.rs:25:12
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LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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help: consider restricting type parameter `Q`
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LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:68:31
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LL | want(&ExampleTupleVariant(q));
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| ---- ^ the trait `T3` is not implemented for `Q`
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| |
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| required by a bound introduced by this call
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note: required for `ExampleTuple<Q>` to implement `T1`
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--> $DIR/blame-trait-error.rs:35:9
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LL | impl<A> T1 for ExampleTuple<A> where A: T3 {}
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| ^^ ^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
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= note: 1 redundant requirement hidden
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= note: required for `&ExampleTuple<Q>` to implement `T1`
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note: required by a bound in `want`
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--> $DIR/blame-trait-error.rs:25:12
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LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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help: consider restricting type parameter `Q`
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LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:71:50
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LL | want(&ExampleOtherTuple::ExampleTupleVariant(q));
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| ---- ^ the trait `T3` is not implemented for `Q`
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| |
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| required by a bound introduced by this call
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note: required for `ExampleTuple<Q>` to implement `T1`
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--> $DIR/blame-trait-error.rs:35:9
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LL | impl<A> T1 for ExampleTuple<A> where A: T3 {}
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| ^^ ^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
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= note: 1 redundant requirement hidden
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= note: required for `&ExampleTuple<Q>` to implement `T1`
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note: required by a bound in `want`
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--> $DIR/blame-trait-error.rs:25:12
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LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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help: consider restricting type parameter `Q`
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LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:74:44
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LL | want(&ExampleDifferentTupleVariantName(q));
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| ---- ^ the trait `T3` is not implemented for `Q`
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| |
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| required by a bound introduced by this call
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note: required for `ExampleTuple<Q>` to implement `T1`
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--> $DIR/blame-trait-error.rs:35:9
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LL | impl<A> T1 for ExampleTuple<A> where A: T3 {}
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| ^^ ^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
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= note: 1 redundant requirement hidden
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= note: required for `&ExampleTuple<Q>` to implement `T1`
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note: required by a bound in `want`
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--> $DIR/blame-trait-error.rs:25:12
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LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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help: consider restricting type parameter `Q`
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LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:77:45
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LL | want(&ExampleYetAnotherTupleVariantName(q));
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| ---- ^ the trait `T3` is not implemented for `Q`
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| |
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| required by a bound introduced by this call
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note: required for `ExampleTuple<Q>` to implement `T1`
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--> $DIR/blame-trait-error.rs:35:9
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LL | impl<A> T1 for ExampleTuple<A> where A: T3 {}
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| ^^ ^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
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= note: 1 redundant requirement hidden
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= note: required for `&ExampleTuple<Q>` to implement `T1`
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note: required by a bound in `want`
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--> $DIR/blame-trait-error.rs:25:12
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LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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help: consider restricting type parameter `Q`
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LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:80:56
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LL | want(&ExampleStruct::ExampleStructVariant { field: q });
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| ---- required by a bound introduced by this call ^ the trait `T3` is not implemented for `Q`
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note: required for `ExampleStruct<Q>` to implement `T1`
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--> $DIR/blame-trait-error.rs:45:9
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LL | impl<A> T1 for ExampleStruct<A> where A: T3 {}
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| ^^ ^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
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= note: 1 redundant requirement hidden
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= note: required for `&ExampleStruct<Q>` to implement `T1`
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note: required by a bound in `want`
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--> $DIR/blame-trait-error.rs:25:12
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LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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help: consider restricting type parameter `Q`
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|
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LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:83:41
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LL | want(&ExampleStructVariant { field: q });
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| ---- ^ the trait `T3` is not implemented for `Q`
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| |
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| required by a bound introduced by this call
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note: required for `ExampleStruct<Q>` to implement `T1`
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--> $DIR/blame-trait-error.rs:45:9
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LL | impl<A> T1 for ExampleStruct<A> where A: T3 {}
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| ^^ ^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
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= note: 1 redundant requirement hidden
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= note: required for `&ExampleStruct<Q>` to implement `T1`
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note: required by a bound in `want`
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--> $DIR/blame-trait-error.rs:25:12
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|
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LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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help: consider restricting type parameter `Q`
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|
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LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:86:61
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LL | want(&ExampleOtherStruct::ExampleStructVariant { field: q });
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| ---- required by a bound introduced by this call ^ the trait `T3` is not implemented for `Q`
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|
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note: required for `ExampleStruct<Q>` to implement `T1`
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--> $DIR/blame-trait-error.rs:45:9
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|
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LL | impl<A> T1 for ExampleStruct<A> where A: T3 {}
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| ^^ ^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
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= note: 1 redundant requirement hidden
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= note: required for `&ExampleStruct<Q>` to implement `T1`
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note: required by a bound in `want`
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--> $DIR/blame-trait-error.rs:25:12
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|
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LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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help: consider restricting type parameter `Q`
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|
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LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:89:54
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LL | want(&ExampleDifferentStructVariantName { field: q });
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| ---- required by a bound introduced by this call ^ the trait `T3` is not implemented for `Q`
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|
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note: required for `ExampleStruct<Q>` to implement `T1`
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--> $DIR/blame-trait-error.rs:45:9
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|
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LL | impl<A> T1 for ExampleStruct<A> where A: T3 {}
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| ^^ ^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
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= note: 1 redundant requirement hidden
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= note: required for `&ExampleStruct<Q>` to implement `T1`
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note: required by a bound in `want`
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--> $DIR/blame-trait-error.rs:25:12
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|
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LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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help: consider restricting type parameter `Q`
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|
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LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:92:55
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|
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LL | want(&ExampleYetAnotherStructVariantName { field: q });
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| ---- required by a bound introduced by this call ^ the trait `T3` is not implemented for `Q`
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|
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note: required for `ExampleStruct<Q>` to implement `T1`
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--> $DIR/blame-trait-error.rs:45:9
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|
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LL | impl<A> T1 for ExampleStruct<A> where A: T3 {}
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| ^^ ^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
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= note: 1 redundant requirement hidden
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= note: required for `&ExampleStruct<Q>` to implement `T1`
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note: required by a bound in `want`
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--> $DIR/blame-trait-error.rs:25:12
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|
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LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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help: consider restricting type parameter `Q`
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|
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LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:95:38
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LL | want(&ExampleActuallyTupleStruct(q, 0));
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| ---- ^ the trait `T3` is not implemented for `Q`
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| |
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| required by a bound introduced by this call
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|
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note: required for `ExampleActuallyTupleStruct<Q>` to implement `T1`
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--> $DIR/blame-trait-error.rs:50:9
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LL | impl<A> T1 for ExampleActuallyTupleStruct<A> where A: T3 {}
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| ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
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= note: 1 redundant requirement hidden
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= note: required for `&ExampleActuallyTupleStruct<Q>` to implement `T1`
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note: required by a bound in `want`
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--> $DIR/blame-trait-error.rs:25:12
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|
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LL | fn want<V: T1>(_x: V) {}
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| ^^ required by this bound in `want`
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help: consider restricting type parameter `Q`
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|
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LL | fn example<Q: T3>(q: Q) {
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| ++++
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error[E0277]: the trait bound `Q: T3` is not satisfied
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--> $DIR/blame-trait-error.rs:98:43
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LL | want(&ExampleActuallyTupleStructOther(q, 0));
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| ---- ^ the trait `T3` is not implemented for `Q`
|
||||
| |
|
||||
| required by a bound introduced by this call
|
||||
|
|
||||
note: required for `ExampleActuallyTupleStruct<Q>` to implement `T1`
|
||||
--> $DIR/blame-trait-error.rs:50:9
|
||||
|
|
||||
LL | impl<A> T1 for ExampleActuallyTupleStruct<A> where A: T3 {}
|
||||
| ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
|
||||
= note: 1 redundant requirement hidden
|
||||
= note: required for `&ExampleActuallyTupleStruct<Q>` to implement `T1`
|
||||
note: required by a bound in `want`
|
||||
--> $DIR/blame-trait-error.rs:25:12
|
||||
|
|
||||
LL | fn want<V: T1>(_x: V) {}
|
||||
| ^^ required by this bound in `want`
|
||||
help: consider restricting type parameter `Q`
|
||||
|
|
||||
LL | fn example<Q: T3>(q: Q) {
|
||||
| ++++
|
||||
|
||||
error: aborting due to 16 previous errors
|
||||
|
||||
For more information about this error, try `rustc --explain E0277`.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user