mirror of https://github.com/rust-lang/rust
254 lines
7.9 KiB
Rust
254 lines
7.9 KiB
Rust
// Private types and traits are not allowed in public interfaces.
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// This test also ensures that the checks are performed even inside private modules.
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#![feature(associated_type_defaults)]
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#![deny(private_interfaces, private_bounds)]
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#![allow(improper_ctypes)]
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mod types {
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struct Priv;
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pub struct Pub;
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pub trait PubTr {
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type Alias;
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}
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pub type Alias = Priv; //~ ERROR type `types::Priv` is more private than the item `types::Alias`
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pub enum E {
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V1(Priv), //~ ERROR type `types::Priv` is more private than the item `E::V1::0`
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V2 { field: Priv }, //~ ERROR type `types::Priv` is more private than the item `E::V2::field`
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}
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pub trait Tr {
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const C: Priv = Priv; //~ ERROR type `types::Priv` is more private than the item `Tr::C`
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type Alias = Priv; //~ ERROR private type `types::Priv` in public interface
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fn f1(arg: Priv) {} //~ ERROR type `types::Priv` is more private than the item `Tr::f1`
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fn f2() -> Priv { panic!() } //~ ERROR type `types::Priv` is more private than the item `Tr::f2`
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}
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extern "C" {
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pub static ES: Priv; //~ ERROR type `types::Priv` is more private than the item `types::ES`
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pub fn ef1(arg: Priv); //~ ERROR type `types::Priv` is more private than the item `types::ef1`
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pub fn ef2() -> Priv; //~ ERROR type `types::Priv` is more private than the item `types::ef2`
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}
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impl PubTr for Pub {
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type Alias = Priv; //~ ERROR private type `types::Priv` in public interface
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}
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}
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mod traits {
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trait PrivTr {}
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pub struct Pub<T>(T);
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pub trait PubTr {}
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pub type Alias<T: PrivTr> = T; //~ ERROR trait `traits::PrivTr` is more private than the item `traits::Alias`
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//~^ WARNING bounds on generic parameters are not enforced in type aliases
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pub trait Tr1: PrivTr {} //~ ERROR trait `traits::PrivTr` is more private than the item `traits::Tr1`
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pub trait Tr2<T: PrivTr> {} //~ ERROR trait `traits::PrivTr` is more private than the item `traits::Tr2`
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pub trait Tr3 {
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type Alias: PrivTr;
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//~^ ERROR trait `traits::PrivTr` is more private than the item `traits::Tr3::Alias`
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fn f<T: PrivTr>(arg: T) {} //~ ERROR trait `traits::PrivTr` is more private than the item `traits::Tr3::f`
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}
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impl<T: PrivTr> Pub<T> {} //~ ERROR trait `traits::PrivTr` is more private than the item `traits::Pub<T>`
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impl<T: PrivTr> PubTr for Pub<T> {} // OK, trait impl predicates
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}
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mod traits_where {
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trait PrivTr {}
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pub struct Pub<T>(T);
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pub trait PubTr {}
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pub type Alias<T> where T: PrivTr = T;
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//~^ ERROR trait `traits_where::PrivTr` is more private than the item `traits_where::Alias`
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//~| WARNING where clauses are not enforced in type aliases
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pub trait Tr2<T> where T: PrivTr {}
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//~^ ERROR trait `traits_where::PrivTr` is more private than the item `traits_where::Tr2`
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pub trait Tr3 {
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fn f<T>(arg: T) where T: PrivTr {}
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//~^ ERROR trait `traits_where::PrivTr` is more private than the item `traits_where::Tr3::f`
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}
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impl<T> Pub<T> where T: PrivTr {}
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//~^ ERROR trait `traits_where::PrivTr` is more private than the item `traits_where::Pub<T>`
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impl<T> PubTr for Pub<T> where T: PrivTr {} // OK, trait impl predicates
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}
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mod generics {
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struct Priv<T = u8>(T);
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pub struct Pub<T = u8>(T);
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trait PrivTr<T> {}
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pub trait PubTr<T> {}
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pub trait Tr1: PrivTr<Pub> {}
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//~^ ERROR trait `generics::PrivTr<generics::Pub>` is more private than the item `generics::Tr1`
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pub trait Tr2: PubTr<Priv> {} //~ ERROR type `generics::Priv` is more private than the item `generics::Tr2`
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pub trait Tr3: PubTr<[Priv; 1]> {} //~ ERROR type `generics::Priv` is more private than the item `generics::Tr3`
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pub trait Tr4: PubTr<Pub<Priv>> {} //~ ERROR type `generics::Priv` is more private than the item `Tr4`
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}
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mod impls {
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struct Priv;
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pub struct Pub;
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trait PrivTr {
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type Alias;
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}
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pub trait PubTr {
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type Alias;
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}
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impl Priv {
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pub fn f(arg: Priv) {} // OK
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}
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impl PrivTr for Priv {
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type Alias = Priv; // OK
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}
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impl PubTr for Priv {
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type Alias = Priv; // OK
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}
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impl PrivTr for Pub {
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type Alias = Priv; // OK
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}
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impl PubTr for Pub {
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type Alias = Priv; //~ ERROR private type `impls::Priv` in public interface
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}
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}
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mod impls_generics {
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struct Priv<T = u8>(T);
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pub struct Pub<T = u8>(T);
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trait PrivTr<T = u8> {
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type Alias;
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}
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pub trait PubTr<T = u8> {
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type Alias;
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}
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impl Priv<Pub> {
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pub fn f(arg: Priv) {} // OK
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}
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impl Pub<Priv> {
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pub fn f(arg: Priv) {} // OK
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}
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impl PrivTr<Pub> for Priv {
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type Alias = Priv; // OK
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}
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impl PubTr<Priv> for Priv {
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type Alias = Priv; // OK
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}
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impl PubTr for Priv<Pub> {
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type Alias = Priv; // OK
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}
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impl PubTr for [Priv; 1] {
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type Alias = Priv; // OK
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}
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impl PubTr for Pub<Priv> {
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type Alias = Priv; // OK
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}
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impl PrivTr<Pub> for Pub {
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type Alias = Priv; // OK
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}
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impl PubTr<Priv> for Pub {
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type Alias = Priv; // OK
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}
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}
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mod aliases_pub {
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struct Priv;
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mod m {
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pub struct Pub1;
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pub struct Pub2;
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pub struct Pub3;
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pub trait PubTr<T = u8> {
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type Check = u8;
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}
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}
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use self::m::Pub1 as PrivUseAlias;
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use self::m::PubTr as PrivUseAliasTr;
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type PrivAlias = m::Pub2;
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trait PrivTr {
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type AssocAlias;
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}
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impl PrivTr for Priv {
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type AssocAlias = m::Pub3;
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}
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pub fn f1(arg: PrivUseAlias) {} // OK
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pub fn f2(arg: PrivAlias) {} // OK
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pub trait Tr1: PrivUseAliasTr {} // OK
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pub trait Tr2: PrivUseAliasTr<PrivAlias> {} // OK
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impl PrivAlias {
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pub fn f(arg: Priv) {} //~ ERROR type `aliases_pub::Priv` is more private than the item `aliases_pub::<impl Pub2>::f`
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}
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impl PrivUseAliasTr for PrivUseAlias {
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type Check = Priv; //~ ERROR private type `aliases_pub::Priv` in public interface
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}
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impl PrivUseAliasTr for PrivAlias {
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type Check = Priv; //~ ERROR private type `aliases_pub::Priv` in public interface
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}
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impl PrivUseAliasTr for <Priv as PrivTr>::AssocAlias {
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type Check = Priv; //~ ERROR private type `aliases_pub::Priv` in public interface
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}
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impl PrivUseAliasTr for Option<<Priv as PrivTr>::AssocAlias> {
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type Check = Priv; //~ ERROR private type `aliases_pub::Priv` in public interface
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}
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impl PrivUseAliasTr for (<Priv as PrivTr>::AssocAlias, Priv) {
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type Check = Priv; // OK
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}
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impl PrivUseAliasTr for Option<(<Priv as PrivTr>::AssocAlias, Priv)> {
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type Check = Priv; // OK
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}
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}
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mod aliases_priv {
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struct Priv;
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struct Priv1;
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struct Priv2;
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struct Priv3;
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trait PrivTr1<T = u8> {
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type Check = u8;
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}
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use self::Priv1 as PrivUseAlias;
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use self::PrivTr1 as PrivUseAliasTr;
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type PrivAlias = Priv2;
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trait PrivTr {
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type AssocAlias;
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}
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impl PrivTr for Priv {
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type AssocAlias = Priv3;
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}
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pub trait Tr1: PrivUseAliasTr {}
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//~^ ERROR trait `PrivTr1` is more private than the item `aliases_priv::Tr1`
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pub trait Tr2: PrivUseAliasTr<PrivAlias> {}
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//~^ ERROR trait `PrivTr1<Priv2>` is more private than the item `aliases_priv::Tr2`
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//~| ERROR type `Priv2` is more private than the item `aliases_priv::Tr2`
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impl PrivUseAlias {
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pub fn f(arg: Priv) {} // OK
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}
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impl PrivAlias {
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pub fn f(arg: Priv) {} // OK
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}
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impl PrivUseAliasTr for PrivUseAlias {
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type Check = Priv; // OK
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}
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impl PrivUseAliasTr for PrivAlias {
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type Check = Priv; // OK
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}
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impl PrivUseAliasTr for <Priv as PrivTr>::AssocAlias {
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type Check = Priv; // OK
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}
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}
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mod aliases_params {
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struct Priv;
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type PrivAliasGeneric<T = Priv> = T;
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type Result<T> = ::std::result::Result<T, Priv>;
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pub fn f1(arg: PrivAliasGeneric<u8>) {} // OK, not an error
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}
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fn main() {}
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