From 8113c3a914c7b4fc27a7b5af321711a83af716d9 Mon Sep 17 00:00:00 2001 From: Lukas Wirth Date: Sat, 10 Apr 2021 18:03:27 +0200 Subject: Respect test style guidelines in tests::traits --- crates/hir_ty/src/tests/traits.rs | 1354 ++++++++++++++++++------------------- 1 file changed, 656 insertions(+), 698 deletions(-) (limited to 'crates/hir_ty') diff --git a/crates/hir_ty/src/tests/traits.rs b/crates/hir_ty/src/tests/traits.rs index 1879dbc78..ffc7c8ef4 100644 --- a/crates/hir_ty/src/tests/traits.rs +++ b/crates/hir_ty/src/tests/traits.rs @@ -263,15 +263,14 @@ mod ops { fn infer_from_bound_1() { check_infer( r#" - trait Trait {} - struct S(T); - impl Trait for S {} - fn foo>(t: T) {} - fn test() { - let s = S(unknown); - foo(s); - } - "#, +trait Trait {} +struct S(T); +impl Trait for S {} +fn foo>(t: T) {} +fn test() { + let s = S(unknown); + foo(s); +}"#, expect![[r#" 85..86 't': T 91..93 '{}': () @@ -291,15 +290,14 @@ fn infer_from_bound_1() { fn infer_from_bound_2() { check_infer( r#" - trait Trait {} - struct S(T); - impl Trait for S {} - fn foo>(t: T) -> U {} - fn test() { - let s = S(unknown); - let x: u32 = foo(s); - } - "#, +trait Trait {} +struct S(T); +impl Trait for S {} +fn foo>(t: T) -> U {} +fn test() { + let s = S(unknown); + let x: u32 = foo(s); +}"#, expect![[r#" 86..87 't': T 97..99 '{}': () @@ -321,13 +319,12 @@ fn trait_default_method_self_bound_implements_trait() { cov_mark::check!(trait_self_implements_self); check_infer( r#" - trait Trait { - fn foo(&self) -> i64; - fn bar(&self) -> { - let x = self.foo(); - } - } - "#, +trait Trait { + fn foo(&self) -> i64; + fn bar(&self) -> { + let x = self.foo(); + } +}"#, expect![[r#" 26..30 'self': &Self 52..56 'self': &Self @@ -343,15 +340,14 @@ fn trait_default_method_self_bound_implements_trait() { fn trait_default_method_self_bound_implements_super_trait() { check_infer( r#" - trait SuperTrait { - fn foo(&self) -> i64; - } - trait Trait: SuperTrait { - fn bar(&self) -> { - let x = self.foo(); - } - } - "#, +trait SuperTrait { + fn foo(&self) -> i64; +} +trait Trait: SuperTrait { + fn bar(&self) -> { + let x = self.foo(); + } +}"#, expect![[r#" 31..35 'self': &Self 85..89 'self': &Self @@ -367,18 +363,17 @@ fn trait_default_method_self_bound_implements_super_trait() { fn infer_project_associated_type() { check_infer( r#" - trait Iterable { - type Item; - } - struct S; - impl Iterable for S { type Item = u32; } - fn test() { - let x: ::Item = 1; - let y: ::Item = no_matter; - let z: T::Item = no_matter; - let a: ::Item = no_matter; - } - "#, +trait Iterable { + type Item; +} +struct S; +impl Iterable for S { type Item = u32; } +fn test() { + let x: ::Item = 1; + let y: ::Item = no_matter; + let z: T::Item = no_matter; + let a: ::Item = no_matter; +}"#, expect![[r#" 108..261 '{ ...ter; }': () 118..119 'x': u32 @@ -397,20 +392,19 @@ fn infer_project_associated_type() { fn infer_return_associated_type() { check_infer( r#" - trait Iterable { - type Item; - } - struct S; - impl Iterable for S { type Item = u32; } - fn foo1(t: T) -> T::Item {} - fn foo2(t: T) -> ::Item {} - fn foo3(t: T) -> ::Item {} - fn test() { - let x = foo1(S); - let y = foo2(S); - let z = foo3(S); - } - "#, +trait Iterable { + type Item; +} +struct S; +impl Iterable for S { type Item = u32; } +fn foo1(t: T) -> T::Item {} +fn foo2(t: T) -> ::Item {} +fn foo3(t: T) -> ::Item {} +fn test() { + let x = foo1(S); + let y = foo2(S); + let z = foo3(S); +}"#, expect![[r#" 106..107 't': T 123..125 '{}': () @@ -439,13 +433,12 @@ fn infer_return_associated_type() { fn infer_associated_type_bound() { check_infer( r#" - trait Iterable { - type Item; - } - fn test>() { - let y: T::Item = unknown; - } - "#, +trait Iterable { + type Item; +} +fn test>() { + let y: T::Item = unknown; +}"#, expect![[r#" 67..100 '{ ...own; }': () 77..78 'y': u32 @@ -458,9 +451,8 @@ fn infer_associated_type_bound() { fn infer_const_body() { check_infer( r#" - const A: u32 = 1 + 1; - static B: u64 = { let x = 1; x }; - "#, +const A: u32 = 1 + 1; +static B: u64 = { let x = 1; x };"#, expect![[r#" 15..16 '1': u32 15..20 '1 + 1': u32 @@ -477,13 +469,12 @@ fn infer_const_body() { fn tuple_struct_fields() { check_infer( r#" - struct S(i32, u64); - fn test() -> u64 { - let a = S(4, 6); - let b = a.0; - a.1 - } - "#, +struct S(i32, u64); +fn test() -> u64 { + let a = S(4, 6); + let b = a.0; + a.1 +}"#, expect![[r#" 37..86 '{ ... a.1 }': u64 47..48 'a': S @@ -504,13 +495,12 @@ fn tuple_struct_fields() { fn tuple_struct_with_fn() { check_infer( r#" - struct S(fn(u32) -> u64); - fn test() -> u64 { - let a = S(|i| 2*i); - let b = a.0(4); - a.0(2) - } - "#, +struct S(fn(u32) -> u64); +fn test() -> u64 { + let a = S(|i| 2*i); + let b = a.0(4); + a.0(2) +}"#, expect![[r#" 43..101 '{ ...0(2) }': u64 53..54 'a': S @@ -949,27 +939,26 @@ fn test(t: T) { fn argument_impl_trait() { check_infer_with_mismatches( r#" - trait Trait { - fn foo(&self) -> T; - fn foo2(&self) -> i64; - } - fn bar(x: impl Trait) {} - struct S(T); - impl Trait for S {} - - fn test(x: impl Trait, y: &impl Trait) { - x; - y; - let z = S(1); - bar(z); - x.foo(); - y.foo(); - z.foo(); - x.foo2(); - y.foo2(); - z.foo2(); - } - "#, +trait Trait { + fn foo(&self) -> T; + fn foo2(&self) -> i64; +} +fn bar(x: impl Trait) {} +struct S(T); +impl Trait for S {} + +fn test(x: impl Trait, y: &impl Trait) { + x; + y; + let z = S(1); + bar(z); + x.foo(); + y.foo(); + z.foo(); + x.foo2(); + y.foo2(); + z.foo2(); +}"#, expect![[r#" 29..33 'self': &Self 54..58 'self': &Self @@ -1007,30 +996,29 @@ fn argument_impl_trait() { fn argument_impl_trait_type_args_1() { check_infer_with_mismatches( r#" - trait Trait {} - trait Foo { - // this function has an implicit Self param, an explicit type param, - // and an implicit impl Trait param! - fn bar(x: impl Trait) -> T { loop {} } - } - fn foo(x: impl Trait) -> T { loop {} } - struct S; - impl Trait for S {} - struct F; - impl Foo for F {} - - fn test() { - Foo::bar(S); - ::bar(S); - F::bar(S); - Foo::bar::(S); - ::bar::(S); - - foo(S); - foo::(S); - foo::(S); // we should ignore the extraneous i32 - } - "#, +trait Trait {} +trait Foo { + // this function has an implicit Self param, an explicit type param, + // and an implicit impl Trait param! + fn bar(x: impl Trait) -> T { loop {} } +} +fn foo(x: impl Trait) -> T { loop {} } +struct S; +impl Trait for S {} +struct F; +impl Foo for F {} + +fn test() { + Foo::bar(S); + ::bar(S); + F::bar(S); + Foo::bar::(S); + ::bar::(S); + + foo(S); + foo::(S); + foo::(S); // we should ignore the extraneous i32 +}"#, expect![[r#" 155..156 'x': impl Trait 175..186 '{ loop {} }': T @@ -1073,21 +1061,20 @@ fn argument_impl_trait_type_args_1() { fn argument_impl_trait_type_args_2() { check_infer_with_mismatches( r#" - trait Trait {} - struct S; - impl Trait for S {} - struct F; - impl F { - fn foo(self, x: impl Trait) -> (T, U) { loop {} } - } +trait Trait {} +struct S; +impl Trait for S {} +struct F; +impl F { + fn foo(self, x: impl Trait) -> (T, U) { loop {} } +} - fn test() { - F.foo(S); - F::.foo(S); - F::.foo::(S); - F::.foo::(S); // extraneous argument should be ignored - } - "#, +fn test() { + F.foo(S); + F::.foo(S); + F::.foo::(S); + F::.foo::(S); // extraneous argument should be ignored +}"#, expect![[r#" 87..91 'self': F 93..94 'x': impl Trait @@ -1115,15 +1102,14 @@ fn argument_impl_trait_type_args_2() { fn argument_impl_trait_to_fn_pointer() { check_infer_with_mismatches( r#" - trait Trait {} - fn foo(x: impl Trait) { loop {} } - struct S; - impl Trait for S {} +trait Trait {} +fn foo(x: impl Trait) { loop {} } +struct S; +impl Trait for S {} - fn test() { - let f: fn(S) -> () = foo; - } - "#, +fn test() { + let f: fn(S) -> () = foo; +}"#, expect![[r#" 22..23 'x': impl Trait 37..48 '{ loop {} }': () @@ -1140,24 +1126,23 @@ fn argument_impl_trait_to_fn_pointer() { fn impl_trait() { check_infer( r#" - trait Trait { - fn foo(&self) -> T; - fn foo2(&self) -> i64; - } - fn bar() -> impl Trait {} +trait Trait { + fn foo(&self) -> T; + fn foo2(&self) -> i64; +} +fn bar() -> impl Trait {} - fn test(x: impl Trait, y: &impl Trait) { - x; - y; - let z = bar(); - x.foo(); - y.foo(); - z.foo(); - x.foo2(); - y.foo2(); - z.foo2(); - } - "#, +fn test(x: impl Trait, y: &impl Trait) { + x; + y; + let z = bar(); + x.foo(); + y.foo(); + z.foo(); + x.foo2(); + y.foo2(); + z.foo2(); +}"#, expect![[r#" 29..33 'self': &Self 54..58 'self': &Self @@ -1191,16 +1176,15 @@ fn simple_return_pos_impl_trait() { cov_mark::check!(lower_rpit); check_infer( r#" - trait Trait { - fn foo(&self) -> T; - } - fn bar() -> impl Trait { loop {} } +trait Trait { + fn foo(&self) -> T; +} +fn bar() -> impl Trait { loop {} } - fn test() { - let a = bar(); - a.foo(); - } - "#, +fn test() { + let a = bar(); + a.foo(); +}"#, expect![[r#" 29..33 'self': &Self 71..82 '{ loop {} }': ! @@ -1220,25 +1204,24 @@ fn simple_return_pos_impl_trait() { fn more_return_pos_impl_trait() { check_infer( r#" - trait Iterator { - type Item; - fn next(&mut self) -> Self::Item; - } - trait Trait { - fn foo(&self) -> T; - } - fn bar() -> (impl Iterator>, impl Trait) { loop {} } - fn baz(t: T) -> (impl Iterator>, impl Trait) { loop {} } - - fn test() { - let (a, b) = bar(); - a.next().foo(); - b.foo(); - let (c, d) = baz(1u128); - c.next().foo(); - d.foo(); - } - "#, +trait Iterator { + type Item; + fn next(&mut self) -> Self::Item; +} +trait Trait { + fn foo(&self) -> T; +} +fn bar() -> (impl Iterator>, impl Trait) { loop {} } +fn baz(t: T) -> (impl Iterator>, impl Trait) { loop {} } + +fn test() { + let (a, b) = bar(); + a.next().foo(); + b.foo(); + let (c, d) = baz(1u128); + c.next().foo(); + d.foo(); +}"#, expect![[r#" 49..53 'self': &mut Self 101..105 'self': &Self @@ -1279,24 +1262,23 @@ fn more_return_pos_impl_trait() { fn dyn_trait() { check_infer( r#" - trait Trait { - fn foo(&self) -> T; - fn foo2(&self) -> i64; - } - fn bar() -> dyn Trait {} +trait Trait { + fn foo(&self) -> T; + fn foo2(&self) -> i64; +} +fn bar() -> dyn Trait {} - fn test(x: dyn Trait, y: &dyn Trait) { - x; - y; - let z = bar(); - x.foo(); - y.foo(); - z.foo(); - x.foo2(); - y.foo2(); - z.foo2(); - } - "#, +fn test(x: dyn Trait, y: &dyn Trait) { + x; + y; + let z = bar(); + x.foo(); + y.foo(); + z.foo(); + x.foo2(); + y.foo2(); + z.foo2(); +}"#, expect![[r#" 29..33 'self': &Self 54..58 'self': &Self @@ -1329,22 +1311,21 @@ fn dyn_trait() { fn dyn_trait_in_impl() { check_infer( r#" - trait Trait { - fn foo(&self) -> (T, U); - } - struct S {} - impl S { - fn bar(&self) -> &dyn Trait { loop {} } - } - trait Trait2 { - fn baz(&self) -> (T, U); - } - impl Trait2 for dyn Trait { } +trait Trait { + fn foo(&self) -> (T, U); +} +struct S {} +impl S { + fn bar(&self) -> &dyn Trait { loop {} } +} +trait Trait2 { + fn baz(&self) -> (T, U); +} +impl Trait2 for dyn Trait { } - fn test(s: S) { - s.bar().baz(); - } - "#, +fn test(s: S) { + s.bar().baz(); +}"#, expect![[r#" 32..36 'self': &Self 102..106 'self': &S @@ -1365,20 +1346,19 @@ fn dyn_trait_in_impl() { fn dyn_trait_bare() { check_infer( r#" - trait Trait { - fn foo(&self) -> u64; - } - fn bar() -> Trait {} +trait Trait { + fn foo(&self) -> u64; +} +fn bar() -> Trait {} - fn test(x: Trait, y: &Trait) -> u64 { - x; - y; - let z = bar(); - x.foo(); - y.foo(); - z.foo(); - } - "#, +fn test(x: Trait, y: &Trait) -> u64 { + x; + y; + let z = bar(); + x.foo(); + y.foo(); + z.foo(); +}"#, expect![[r#" 26..30 'self': &Self 60..62 '{}': () @@ -1404,17 +1384,24 @@ fn dyn_trait_bare() { fn weird_bounds() { check_infer( r#" - trait Trait {} - fn test(a: impl Trait + 'lifetime, b: impl 'lifetime, c: impl (Trait), d: impl ('lifetime), e: impl ?Sized, f: impl Trait + ?Sized) {} - "#, +trait Trait {} +fn test( + a: impl Trait + 'lifetime, + b: impl 'lifetime, + c: impl (Trait), + d: impl ('lifetime), + e: impl ?Sized, + f: impl Trait + ?Sized +) {} +"#, expect![[r#" - 23..24 'a': impl Trait - 50..51 'b': impl - 69..70 'c': impl Trait - 86..87 'd': impl - 107..108 'e': impl - 123..124 'f': impl Trait - 147..149 '{}': () + 28..29 'a': impl Trait + 59..60 'b': impl + 82..83 'c': impl Trait + 103..104 'd': impl + 128..129 'e': impl + 148..149 'f': impl Trait + 173..175 '{}': () "#]], ); } @@ -1439,27 +1426,26 @@ fn test(x: (impl Trait + UnknownTrait)) { fn assoc_type_bindings() { check_infer( r#" - trait Trait { - type Type; - } +trait Trait { + type Type; +} - fn get(t: T) -> ::Type {} - fn get2>(t: T) -> U {} - fn set>(t: T) -> T {t} - - struct S; - impl Trait for S { type Type = T; } - - fn test>(x: T, y: impl Trait) { - get(x); - get2(x); - get(y); - get2(y); - get(set(S)); - get2(set(S)); - get2(S::); - } - "#, +fn get(t: T) -> ::Type {} +fn get2>(t: T) -> U {} +fn set>(t: T) -> T {t} + +struct S; +impl Trait for S { type Type = T; } + +fn test>(x: T, y: impl Trait) { + get(x); + get2(x); + get(y); + get2(y); + get(set(S)); + get2(set(S)); + get2(S::); +}"#, expect![[r#" 49..50 't': T 77..79 '{}': () @@ -1546,18 +1532,17 @@ mod iter { fn projection_eq_within_chalk() { check_infer( r#" - trait Trait1 { - type Type; - } - trait Trait2 { - fn foo(self) -> T; - } - impl Trait2 for U where U: Trait1 {} +trait Trait1 { + type Type; +} +trait Trait2 { + fn foo(self) -> T; +} +impl Trait2 for U where U: Trait1 {} - fn test>(x: T) { - x.foo(); - } - "#, +fn test>(x: T) { + x.foo(); +}"#, expect![[r#" 61..65 'self': Self 163..164 'x': T @@ -1589,19 +1574,18 @@ fn test(x: T) { fn super_trait_method_resolution() { check_infer( r#" - mod foo { - trait SuperTrait { - fn foo(&self) -> u32 {} - } - } - trait Trait1: foo::SuperTrait {} - trait Trait2 where Self: foo::SuperTrait {} +mod foo { + trait SuperTrait { + fn foo(&self) -> u32 {} + } +} +trait Trait1: foo::SuperTrait {} +trait Trait2 where Self: foo::SuperTrait {} - fn test(x: T, y: U) { - x.foo(); - y.foo(); - } - "#, +fn test(x: T, y: U) { + x.foo(); + y.foo(); +}"#, expect![[r#" 49..53 'self': &Self 62..64 '{}': () @@ -1620,17 +1604,16 @@ fn super_trait_method_resolution() { fn super_trait_impl_trait_method_resolution() { check_infer( r#" - mod foo { - trait SuperTrait { - fn foo(&self) -> u32 {} - } - } - trait Trait1: foo::SuperTrait {} +mod foo { + trait SuperTrait { + fn foo(&self) -> u32 {} + } +} +trait Trait1: foo::SuperTrait {} - fn test(x: &impl Trait1) { - x.foo(); - } - "#, +fn test(x: &impl Trait1) { + x.foo(); +}"#, expect![[r#" 49..53 'self': &Self 62..64 '{}': () @@ -1667,20 +1650,19 @@ fn super_trait_cycle() { fn super_trait_assoc_type_bounds() { check_infer( r#" - trait SuperTrait { type Type; } - trait Trait where Self: SuperTrait {} +trait SuperTrait { type Type; } +trait Trait where Self: SuperTrait {} - fn get2>(t: T) -> U {} - fn set>(t: T) -> T {t} +fn get2>(t: T) -> U {} +fn set>(t: T) -> T {t} - struct S; - impl SuperTrait for S { type Type = T; } - impl Trait for S {} +struct S; +impl SuperTrait for S { type Type = T; } +impl Trait for S {} - fn test() { - get2(set(S)); - } - "#, +fn test() { + get2(set(S)); +}"#, expect![[r#" 102..103 't': T 113..115 '{}': () @@ -1701,16 +1683,15 @@ fn super_trait_assoc_type_bounds() { fn fn_trait() { check_infer_with_mismatches( r#" - trait FnOnce { - type Output; +trait FnOnce { + type Output; - fn call_once(self, args: Args) -> >::Output; - } + fn call_once(self, args: Args) -> >::Output; +} - fn test u128>(f: F) { - f.call_once((1, 2)); - } - "#, +fn test u128>(f: F) { + f.call_once((1, 2)); +}"#, expect![[r#" 56..60 'self': Self 62..66 'args': Args @@ -1729,37 +1710,36 @@ fn fn_trait() { fn fn_ptr_and_item() { check_infer_with_mismatches( r#" - #[lang="fn_once"] - trait FnOnce { - type Output; +#[lang="fn_once"] +trait FnOnce { + type Output; - fn call_once(self, args: Args) -> Self::Output; - } + fn call_once(self, args: Args) -> Self::Output; +} - trait Foo { - fn foo(&self) -> T; - } +trait Foo { + fn foo(&self) -> T; +} - struct Bar(T); +struct Bar(T); - impl R> Foo<(A1, R)> for Bar { - fn foo(&self) -> (A1, R) { loop {} } - } +impl R> Foo<(A1, R)> for Bar { + fn foo(&self) -> (A1, R) { loop {} } +} - enum Opt { None, Some(T) } - impl Opt { - fn map U>(self, f: F) -> Opt { loop {} } - } +enum Opt { None, Some(T) } +impl Opt { + fn map U>(self, f: F) -> Opt { loop {} } +} - fn test() { - let bar: Bar u32>; - bar.foo(); +fn test() { + let bar: Bar u32>; + bar.foo(); - let opt: Opt; - let f: fn(u8) -> u32; - opt.map(f); - } - "#, + let opt: Opt; + let f: fn(u8) -> u32; + opt.map(f); +}"#, expect![[r#" 74..78 'self': Self 80..84 'args': Args @@ -1790,46 +1770,45 @@ fn fn_ptr_and_item() { fn fn_trait_deref_with_ty_default() { check_infer( r#" - #[lang = "deref"] - trait Deref { - type Target; +#[lang = "deref"] +trait Deref { + type Target; - fn deref(&self) -> &Self::Target; - } + fn deref(&self) -> &Self::Target; +} - #[lang="fn_once"] - trait FnOnce { - type Output; +#[lang="fn_once"] +trait FnOnce { + type Output; - fn call_once(self, args: Args) -> Self::Output; - } + fn call_once(self, args: Args) -> Self::Output; +} - struct Foo; +struct Foo; - impl Foo { - fn foo(&self) -> usize {} - } +impl Foo { + fn foo(&self) -> usize {} +} - struct Lazy T>(F); +struct Lazy T>(F); - impl Lazy { - pub fn new(f: F) -> Lazy {} - } +impl Lazy { + pub fn new(f: F) -> Lazy {} +} - impl T> Deref for Lazy { - type Target = T; - } +impl T> Deref for Lazy { + type Target = T; +} - fn test() { - let lazy1: Lazy = Lazy::new(|| Foo); - let r1 = lazy1.foo(); +fn test() { + let lazy1: Lazy = Lazy::new(|| Foo); + let r1 = lazy1.foo(); - fn make_foo_fn() -> Foo {} - let make_foo_fn_ptr: fn() -> Foo = make_foo_fn; - let lazy2: Lazy = Lazy::new(make_foo_fn_ptr); - let r2 = lazy2.foo(); - } - "#, + fn make_foo_fn() -> Foo {} + let make_foo_fn_ptr: fn() -> Foo = make_foo_fn; + let lazy2: Lazy = Lazy::new(make_foo_fn_ptr); + let r2 = lazy2.foo(); +}"#, expect![[r#" 64..68 'self': &Self 165..169 'self': Self @@ -1865,23 +1844,22 @@ fn fn_trait_deref_with_ty_default() { fn closure_1() { check_infer_with_mismatches( r#" - #[lang = "fn_once"] - trait FnOnce { - type Output; - } +#[lang = "fn_once"] +trait FnOnce { + type Output; +} - enum Option { Some(T), None } - impl Option { - fn map U>(self, f: F) -> Option { loop {} } - } +enum Option { Some(T), None } +impl Option { + fn map U>(self, f: F) -> Option { loop {} } +} - fn test() { - let x = Option::Some(1u32); - x.map(|v| v + 1); - x.map(|_v| 1u64); - let y: Option = x.map(|_v| 1); - } - "#, +fn test() { + let x = Option::Some(1u32); + x.map(|v| v + 1); + x.map(|_v| 1u64); + let y: Option = x.map(|_v| 1); +}"#, expect![[r#" 147..151 'self': Option 153..154 'f': F @@ -1919,33 +1897,32 @@ fn closure_1() { fn closure_2() { check_infer_with_mismatches( r#" - #[lang = "add"] - pub trait Add { - type Output; - fn add(self, rhs: Rhs) -> Self::Output; - } +#[lang = "add"] +pub trait Add { + type Output; + fn add(self, rhs: Rhs) -> Self::Output; +} - trait FnOnce { - type Output; - } +trait FnOnce { + type Output; +} - impl Add for u64 { - type Output = Self; - fn add(self, rhs: u64) -> Self::Output {0} - } +impl Add for u64 { + type Output = Self; + fn add(self, rhs: u64) -> Self::Output {0} +} - impl Add for u128 { - type Output = Self; - fn add(self, rhs: u128) -> Self::Output {0} - } +impl Add for u128 { + type Output = Self; + fn add(self, rhs: u128) -> Self::Output {0} +} - fn test u64>(f: F) { - f(1); - let g = |v| v + 1; - g(1u64); - let h = |v| 1u128 + v; - } - "#, +fn test u64>(f: F) { + f(1); + let g = |v| v + 1; + g(1u64); + let h = |v| 1u128 + v; +}"#, expect![[r#" 72..76 'self': Self 78..81 'rhs': Rhs @@ -1985,29 +1962,28 @@ fn closure_2() { fn closure_as_argument_inference_order() { check_infer_with_mismatches( r#" - #[lang = "fn_once"] - trait FnOnce { - type Output; - } +#[lang = "fn_once"] +trait FnOnce { + type Output; +} - fn foo1 U>(x: T, f: F) -> U { loop {} } - fn foo2 U>(f: F, x: T) -> U { loop {} } +fn foo1 U>(x: T, f: F) -> U { loop {} } +fn foo2 U>(f: F, x: T) -> U { loop {} } - struct S; - impl S { - fn method(self) -> u64; +struct S; +impl S { + fn method(self) -> u64; - fn foo1 U>(self, x: T, f: F) -> U { loop {} } - fn foo2 U>(self, f: F, x: T) -> U { loop {} } - } + fn foo1 U>(self, x: T, f: F) -> U { loop {} } + fn foo2 U>(self, f: F, x: T) -> U { loop {} } +} - fn test() { - let x1 = foo1(S, |s| s.method()); - let x2 = foo2(|s| s.method(), S); - let x3 = S.foo1(S, |s| s.method()); - let x4 = S.foo2(|s| s.method(), S); - } - "#, +fn test() { + let x1 = foo1(S, |s| s.method()); + let x2 = foo2(|s| s.method(), S); + let x3 = S.foo1(S, |s| s.method()); + let x4 = S.foo2(|s| s.method(), S); +}"#, expect![[r#" 94..95 'x': T 100..101 'f': F @@ -2136,27 +2112,26 @@ fn test() where T::Item: Trait2, T: Trait, U: Trait<()> { fn unselected_projection_on_impl_self() { check_infer( r#" - //- /main.rs - trait Trait { - type Item; +//- /main.rs +trait Trait { + type Item; - fn f(&self, x: Self::Item); - } + fn f(&self, x: Self::Item); +} - struct S; +struct S; - impl Trait for S { - type Item = u32; - fn f(&self, x: Self::Item) { let y = x; } - } +impl Trait for S { + type Item = u32; + fn f(&self, x: Self::Item) { let y = x; } +} - struct S2; +struct S2; - impl Trait for S2 { - type Item = i32; - fn f(&self, x: ::Item) { let y = x; } - } - "#, +impl Trait for S2 { + type Item = i32; + fn f(&self, x: ::Item) { let y = x; } +}"#, expect![[r#" 40..44 'self': &Self 46..47 'x': Trait::Item @@ -2392,58 +2367,57 @@ fn test>>() { fn proc_macro_server_types() { check_infer( r#" - macro_rules! with_api { - ($S:ident, $self:ident, $m:ident) => { - $m! { - TokenStream { - fn new() -> $S::TokenStream; - }, - Group { - }, - } - }; - } - macro_rules! associated_item { - (type TokenStream) => - (type TokenStream: 'static;); - (type Group) => - (type Group: 'static;); - ($($item:tt)*) => ($($item)*;) +macro_rules! with_api { + ($S:ident, $self:ident, $m:ident) => { + $m! { + TokenStream { + fn new() -> $S::TokenStream; + }, + Group { + }, } - macro_rules! declare_server_traits { - ($($name:ident { - $(fn $method:ident($($arg:ident: $arg_ty:ty),* $(,)?) $(-> $ret_ty:ty)?;)* - }),* $(,)?) => { - pub trait Types { - $(associated_item!(type $name);)* - } - - $(pub trait $name: Types { - $(associated_item!(fn $method($($arg: $arg_ty),*) $(-> $ret_ty)?);)* - })* - - pub trait Server: Types $(+ $name)* {} - impl Server for S {} - } + }; +} +macro_rules! associated_item { + (type TokenStream) => + (type TokenStream: 'static;); + (type Group) => + (type Group: 'static;); + ($($item:tt)*) => ($($item)*;) +} +macro_rules! declare_server_traits { + ($($name:ident { + $(fn $method:ident($($arg:ident: $arg_ty:ty),* $(,)?) $(-> $ret_ty:ty)?;)* + }),* $(,)?) => { + pub trait Types { + $(associated_item!(type $name);)* } - with_api!(Self, self_, declare_server_traits); - struct G {} - struct T {} - struct Rustc; - impl Types for Rustc { - type TokenStream = T; - type Group = G; - } + $(pub trait $name: Types { + $(associated_item!(fn $method($($arg: $arg_ty),*) $(-> $ret_ty)?);)* + })* - fn make() -> T { loop {} } - impl TokenStream for Rustc { - fn new() -> Self::TokenStream { - let group: Self::Group = make(); - make() - } - } - "#, + pub trait Server: Types $(+ $name)* {} + impl Server for S {} + } +} + +with_api!(Self, self_, declare_server_traits); +struct G {} +struct T {} +struct Rustc; +impl Types for Rustc { + type TokenStream = T; + type Group = G; +} + +fn make() -> T { loop {} } +impl TokenStream for Rustc { + fn new() -> Self::TokenStream { + let group: Self::Group = make(); + make() + } +}"#, expect![[r#" 1061..1072 '{ loop {} }': T 1063..1070 'loop {}': ! @@ -2462,23 +2436,22 @@ fn proc_macro_server_types() { fn unify_impl_trait() { check_infer_with_mismatches( r#" - trait Trait {} +trait Trait {} - fn foo(x: impl Trait) { loop {} } - fn bar(x: impl Trait) -> T { loop {} } +fn foo(x: impl Trait) { loop {} } +fn bar(x: impl Trait) -> T { loop {} } - struct S(T); - impl Trait for S {} +struct S(T); +impl Trait for S {} - fn default() -> T { loop {} } +fn default() -> T { loop {} } - fn test() -> impl Trait { - let s1 = S(default()); - foo(s1); - let x: i32 = bar(S(default())); - S(default()) - } - "#, +fn test() -> impl Trait { + let s1 = S(default()); + foo(s1); + let x: i32 = bar(S(default())); + S(default()) +}"#, expect![[r#" 26..27 'x': impl Trait 46..57 '{ loop {} }': () @@ -2519,30 +2492,29 @@ fn unify_impl_trait() { fn assoc_types_from_bounds() { check_infer( r#" - //- /main.rs - #[lang = "fn_once"] - trait FnOnce { - type Output; - } +//- /main.rs +#[lang = "fn_once"] +trait FnOnce { + type Output; +} - trait T { - type O; - } +trait T { + type O; +} - impl T for () { - type O = (); - } +impl T for () { + type O = (); +} - fn f(_v: F) - where - X: T, - F: FnOnce(&X::O), - { } +fn f(_v: F) +where + X: T, + F: FnOnce(&X::O), +{ } - fn main() { - f::<(), _>(|z| { z; }); - } - "#, +fn main() { + f::<(), _>(|z| { z; }); +}"#, expect![[r#" 133..135 '_v': F 178..181 '{ }': () @@ -2628,76 +2600,75 @@ fn test() { fn iterator_chain() { check_infer_with_mismatches( r#" - //- /main.rs - #[lang = "fn_once"] - trait FnOnce { - type Output; - } - #[lang = "fn_mut"] - trait FnMut: FnOnce { } +//- /main.rs +#[lang = "fn_once"] +trait FnOnce { + type Output; +} +#[lang = "fn_mut"] +trait FnMut: FnOnce { } - enum Option { Some(T), None } - use Option::*; +enum Option { Some(T), None } +use Option::*; - pub trait Iterator { - type Item; +pub trait Iterator { + type Item; - fn filter_map(self, f: F) -> FilterMap - where - F: FnMut(Self::Item) -> Option, - { loop {} } + fn filter_map(self, f: F) -> FilterMap + where + F: FnMut(Self::Item) -> Option, + { loop {} } - fn for_each(self, f: F) - where - F: FnMut(Self::Item), - { loop {} } - } + fn for_each(self, f: F) + where + F: FnMut(Self::Item), + { loop {} } +} - pub trait IntoIterator { - type Item; - type IntoIter: Iterator; - fn into_iter(self) -> Self::IntoIter; - } +pub trait IntoIterator { + type Item; + type IntoIter: Iterator; + fn into_iter(self) -> Self::IntoIter; +} - pub struct FilterMap { } - impl Iterator for FilterMap - where - F: FnMut(I::Item) -> Option, - { - type Item = B; - } +pub struct FilterMap { } +impl Iterator for FilterMap +where + F: FnMut(I::Item) -> Option, +{ + type Item = B; +} - #[stable(feature = "rust1", since = "1.0.0")] - impl IntoIterator for I { - type Item = I::Item; - type IntoIter = I; +#[stable(feature = "rust1", since = "1.0.0")] +impl IntoIterator for I { + type Item = I::Item; + type IntoIter = I; - fn into_iter(self) -> I { - self - } - } + fn into_iter(self) -> I { + self + } +} - struct Vec {} - impl Vec { - fn new() -> Self { loop {} } - } +struct Vec {} +impl Vec { + fn new() -> Self { loop {} } +} - impl IntoIterator for Vec { - type Item = T; - type IntoIter = IntoIter; - } +impl IntoIterator for Vec { + type Item = T; + type IntoIter = IntoIter; +} - pub struct IntoIter { } - impl Iterator for IntoIter { - type Item = T; - } +pub struct IntoIter { } +impl Iterator for IntoIter { + type Item = T; +} - fn main() { - Vec::::new().into_iter() - .filter_map(|x| if x > 0 { Some(x as u32) } else { None }) - .for_each(|y| { y; }); - } - "#, +fn main() { + Vec::::new().into_iter() + .filter_map(|x| if x > 0 { Some(x as u32) } else { None }) + .for_each(|y| { y; }); +}"#, expect![[r#" 226..230 'self': Self 232..233 'f': F @@ -2779,14 +2750,13 @@ fn main() { fn trait_object_no_coercion() { check_infer_with_mismatches( r#" - trait Foo {} +trait Foo {} - fn foo(x: &dyn Foo) {} +fn foo(x: &dyn Foo) {} - fn test(x: &dyn Foo) { - foo(x); - } - "#, +fn test(x: &dyn Foo) { + foo(x); +}"#, expect![[r#" 21..22 'x': &dyn Foo 34..36 '{}': () @@ -2803,23 +2773,22 @@ fn trait_object_no_coercion() { fn builtin_copy() { check_infer_with_mismatches( r#" - #[lang = "copy"] - trait Copy {} +#[lang = "copy"] +trait Copy {} - struct IsCopy; - impl Copy for IsCopy {} - struct NotCopy; +struct IsCopy; +impl Copy for IsCopy {} +struct NotCopy; - trait Test { fn test(&self) -> bool; } - impl Test for T {} +trait Test { fn test(&self) -> bool; } +impl Test for T {} - fn test() { - IsCopy.test(); - NotCopy.test(); - (IsCopy, IsCopy).test(); - (IsCopy, NotCopy).test(); - } - "#, +fn test() { + IsCopy.test(); + NotCopy.test(); + (IsCopy, IsCopy).test(); + (IsCopy, NotCopy).test(); +}"#, expect![[r#" 110..114 'self': &Self 166..267 '{ ...t(); }': () @@ -2843,24 +2812,23 @@ fn builtin_copy() { fn builtin_fn_def_copy() { check_infer_with_mismatches( r#" - #[lang = "copy"] - trait Copy {} +#[lang = "copy"] +trait Copy {} - fn foo() {} - fn bar(T) -> T {} - struct Struct(usize); - enum Enum { Variant(usize) } +fn foo() {} +fn bar(T) -> T {} +struct Struct(usize); +enum Enum { Variant(usize) } - trait Test { fn test(&self) -> bool; } - impl Test for T {} +trait Test { fn test(&self) -> bool; } +impl Test for T {} - fn test() { - foo.test(); - bar.test(); - Struct.test(); - Enum::Variant.test(); - } - "#, +fn test() { + foo.test(); + bar.test(); + Struct.test(); + Enum::Variant.test(); +}"#, expect![[r#" 41..43 '{}': () 60..61 'T': {unknown} @@ -2884,18 +2852,17 @@ fn builtin_fn_def_copy() { fn builtin_fn_ptr_copy() { check_infer_with_mismatches( r#" - #[lang = "copy"] - trait Copy {} +#[lang = "copy"] +trait Copy {} - trait Test { fn test(&self) -> bool; } - impl Test for T {} +trait Test { fn test(&self) -> bool; } +impl Test for T {} - fn test(f1: fn(), f2: fn(usize) -> u8, f3: fn(u8, u8) -> &u8) { - f1.test(); - f2.test(); - f3.test(); - } - "#, +fn test(f1: fn(), f2: fn(usize) -> u8, f3: fn(u8, u8) -> &u8) { + f1.test(); + f2.test(); + f3.test(); +}"#, expect![[r#" 54..58 'self': &Self 108..110 'f1': fn() @@ -2916,19 +2883,18 @@ fn builtin_fn_ptr_copy() { fn builtin_sized() { check_infer_with_mismatches( r#" - #[lang = "sized"] - trait Sized {} +#[lang = "sized"] +trait Sized {} - trait Test { fn test(&self) -> bool; } - impl Test for T {} +trait Test { fn test(&self) -> bool; } +impl Test for T {} - fn test() { - 1u8.test(); - (*"foo").test(); // not Sized - (1u8, 1u8).test(); - (1u8, *"foo").test(); // not Sized - } - "#, +fn test() { + 1u8.test(); + (*"foo").test(); // not Sized + (1u8, 1u8).test(); + (1u8, *"foo").test(); // not Sized +}"#, expect![[r#" 56..60 'self': &Self 113..228 '{ ...ized }': () @@ -2998,19 +2964,18 @@ impl iter::Iterator for ops::Range { fn infer_closure_arg() { check_infer( r#" - //- /lib.rs +//- /lib.rs - enum Option { - None, - Some(T) - } +enum Option { + None, + Some(T) +} - fn foo() { - let s = Option::None; - let f = |x: Option| {}; - (&f)(s) - } - "#, +fn foo() { + let s = Option::None; + let f = |x: Option| {}; + (&f)(s) +}"#, expect![[r#" 52..126 '{ ...)(s) }': () 62..63 's': Option @@ -3079,46 +3044,45 @@ fn infer_box_fn_arg() { // The type mismatch is a bug check_infer_with_mismatches( r#" - //- /lib.rs deps:std +//- /lib.rs deps:std - #[lang = "fn_once"] - pub trait FnOnce { - type Output; +#[lang = "fn_once"] +pub trait FnOnce { + type Output; - extern "rust-call" fn call_once(self, args: Args) -> Self::Output; - } + extern "rust-call" fn call_once(self, args: Args) -> Self::Output; +} - #[lang = "deref"] - pub trait Deref { - type Target: ?Sized; +#[lang = "deref"] +pub trait Deref { + type Target: ?Sized; - fn deref(&self) -> &Self::Target; - } + fn deref(&self) -> &Self::Target; +} - #[lang = "owned_box"] - pub struct Box { - inner: *mut T, - } +#[lang = "owned_box"] +pub struct Box { + inner: *mut T, +} - impl Deref for Box { - type Target = T; +impl Deref for Box { + type Target = T; - fn deref(&self) -> &T { - &self.inner - } - } + fn deref(&self) -> &T { + &self.inner + } +} - enum Option { - None, - Some(T) - } +enum Option { + None, + Some(T) +} - fn foo() { - let s = Option::None; - let f: Box)> = box (|ps| {}); - f(&s); - } - "#, +fn foo() { + let s = Option::None; + let f: Box)> = box (|ps| {}); + f(&s); +}"#, expect![[r#" 100..104 'self': Self 106..110 'args': Args @@ -3284,8 +3248,7 @@ fn f() { ().method(); //^^^^^^^^^^^ u8 } -} - "#, +}"#, expect![[r#" 46..50 'self': &Self 58..63 '{ 0 }': u8 @@ -3339,8 +3302,7 @@ fn f() { fn inner() -> S { let s = inner(); } -} - "#, +}"#, expect![[r#" 17..73 '{ ... } }': () 39..71 '{ ... }': () @@ -3375,8 +3337,7 @@ fn test() { let x = A; let y = A; let r = x.do_op(y); -} - "#, +}"#, expect![[r#" 63..67 'self': Self 69..72 'rhs': RHS @@ -3425,9 +3386,7 @@ impl foo::Bar for F { fn foo() { use foo::Bar; let x = ::boo(); -} - - "#, +}"#, expect![[r#" 132..163 '{ ... }': Bar::Output 146..153 'loop {}': ! @@ -3465,8 +3424,7 @@ fn foo() { pub trait Deserialize { fn deserialize() -> u8; -} - "#, +}"#, ); } -- cgit v1.2.3