diff options
Diffstat (limited to 'src/go/types/testdata/check/typeparams.go2')
| -rw-r--r-- | src/go/types/testdata/check/typeparams.go2 | 101 |
1 files changed, 53 insertions, 48 deletions
diff --git a/src/go/types/testdata/check/typeparams.go2 b/src/go/types/testdata/check/typeparams.go2 index d95e02e443..77cd65d19a 100644 --- a/src/go/types/testdata/check/typeparams.go2 +++ b/src/go/types/testdata/check/typeparams.go2 @@ -6,11 +6,11 @@ package p // import "io" // for type assertion tests -// The predeclared identifier "any" is only visible as a constraint +// The predeclared identifier "any" can only be used as a constraint // in a type parameter list. -var _ any // ERROR undeclared -func _[_ any /* ok here */ , _ interface{any /* ERROR undeclared */ }](any /* ERROR undeclared */ ) { - var _ any /* ERROR undeclared */ +var _ any // ERROR cannot use any outside constraint position +func _[_ any /* ok here */ , _ interface{any /* ERROR constraint */ }](any /* ERROR constraint */ ) { + var _ any /* ERROR constraint */ } func identity[T any](x T) T { return x } @@ -52,22 +52,22 @@ func swapswap[A, B any](a A, b B) (A, B) { type F[A, B any] func(A, B) (B, A) -func min[T interface{ type int }](x, y T) T { +func min[T interface{ ~int }](x, y T) T { if x < y { return x } return y } -func _[T interface{type int, float32}](x, y T) bool { return x < y } +func _[T interface{~int | ~float32}](x, y T) bool { return x < y } func _[T any](x, y T) bool { return x /* ERROR cannot compare */ < y } -func _[T interface{type int, float32, bool}](x, y T) bool { return x /* ERROR cannot compare */ < y } +func _[T interface{~int | ~float32 | ~bool}](x, y T) bool { return x /* ERROR cannot compare */ < y } func _[T C1[T]](x, y T) bool { return x /* ERROR cannot compare */ < y } func _[T C2[T]](x, y T) bool { return x < y } type C1[T any] interface{} -type C2[T any] interface{ type int, float32 } +type C2[T any] interface{ ~int | ~float32 } func new[T any]() *T { var x T @@ -79,11 +79,11 @@ var _ *int = new[int]() func _[T any](map[T /* ERROR incomparable map key type T \(missing comparable constraint\) */]int) // w/o constraint we don't know if T is comparable -func f1[T1 any](struct{T1}) int +func f1[T1 any](struct{T1 /* ERROR cannot be a .* type parameter */ }) int var _ = f1[int](struct{T1}{}) type T1 = int -func f2[t1 any](struct{t1; x float32}) int +func f2[t1 any](struct{t1 /* ERROR cannot be a .* type parameter */ ; x float32}) int var _ = f2[t1](struct{t1; x float32}{}) type t1 = int @@ -95,48 +95,53 @@ var _ = f3[int, rune, bool](1, struct{x rune}{}, nil) // indexing func _[T any] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] } -func _[T interface{ type int }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] } -func _[T interface{ type string }] (x T, i int) { _ = x[i] } -func _[T interface{ type []int }] (x T, i int) { _ = x[i] } -func _[T interface{ type [10]int, *[20]int, map[int]int }] (x T, i int) { _ = x[i] } -func _[T interface{ type string, []byte }] (x T, i int) { _ = x[i] } -func _[T interface{ type []int, [1]rune }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] } -func _[T interface{ type string, []rune }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] } - -// indexing with various combinations of map types in type lists (see issue #42616) -func _[T interface{ type []E, map[int]E }, E any](x T, i int) { _ = x[i] } -func _[T interface{ type []E }, E any](x T, i int) { _ = &x[i] } -func _[T interface{ type map[int]E }, E any](x T, i int) { _, _ = x[i] } // comma-ok permitted -func _[T interface{ type []E, map[int]E }, E any](x T, i int) { _ = &x /* ERROR cannot take address */ [i] } -func _[T interface{ type []E, map[int]E, map[uint]E }, E any](x T, i int) { _ = x /* ERROR cannot index */ [i] } // different map element types -func _[T interface{ type []E, map[string]E }, E any](x T, i int) { _ = x[i /* ERROR cannot use i */ ] } +func _[T interface{ ~int }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] } +func _[T interface{ ~string }] (x T, i int) { _ = x[i] } +func _[T interface{ ~[]int }] (x T, i int) { _ = x[i] } +func _[T interface{ ~[10]int | ~*[20]int | ~map[int]int }] (x T, i int) { _ = x /* ERROR cannot index */ [i] } // map and non-map types +func _[T interface{ ~string | ~[]byte }] (x T, i int) { _ = x[i] } +func _[T interface{ ~[]int | ~[1]rune }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] } +func _[T interface{ ~string | ~[]rune }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] } + +// indexing with various combinations of map types in type sets (see issue #42616) +func _[T interface{ ~[]E | ~map[int]E }, E any](x T, i int) { _ = x /* ERROR cannot index */ [i] } // map and non-map types +func _[T interface{ ~[]E }, E any](x T, i int) { _ = &x[i] } +func _[T interface{ ~map[int]E }, E any](x T, i int) { _, _ = x[i] } // comma-ok permitted +func _[T interface{ ~map[int]E }, E any](x T, i int) { _ = &x /* ERROR cannot take address */ [i] } +func _[T interface{ ~map[int]E | ~map[uint]E }, E any](x T, i int) { _ = x /* ERROR cannot index */ [i] } // different map element types +func _[T interface{ ~[]E | ~map[string]E }, E any](x T, i int) { _ = x /* ERROR cannot index */ [i] } // map and non-map types + +// indexing with various combinations of array and other types in type sets +func _[T interface{ [10]int }](x T, i int) { _ = x[i]; _ = x[9]; _ = x[10 /* ERROR out of bounds */ ] } +func _[T interface{ [10]byte | string }](x T, i int) { _ = x[i]; _ = x[9]; _ = x[10 /* ERROR out of bounds */ ] } +func _[T interface{ [10]int | *[20]int | []int }](x T, i int) { _ = x[i]; _ = x[9]; _ = x[10 /* ERROR out of bounds */ ] } // slicing // TODO(gri) implement this -func _[T interface{ type string }] (x T, i, j, k int) { _ = x /* ERROR invalid operation */ [i:j:k] } +func _[T interface{ ~string }] (x T, i, j, k int) { _ = x /* ERROR generic slice expressions not yet implemented */ [i:j:k] } // len/cap built-ins func _[T any](x T) { _ = len(x /* ERROR invalid argument */ ) } -func _[T interface{ type int }](x T) { _ = len(x /* ERROR invalid argument */ ) } -func _[T interface{ type string, []byte, int }](x T) { _ = len(x /* ERROR invalid argument */ ) } -func _[T interface{ type string }](x T) { _ = len(x) } -func _[T interface{ type [10]int }](x T) { _ = len(x) } -func _[T interface{ type []byte }](x T) { _ = len(x) } -func _[T interface{ type map[int]int }](x T) { _ = len(x) } -func _[T interface{ type chan int }](x T) { _ = len(x) } -func _[T interface{ type string, []byte, chan int }](x T) { _ = len(x) } +func _[T interface{ ~int }](x T) { _ = len(x /* ERROR invalid argument */ ) } +func _[T interface{ ~string | ~[]byte | ~int }](x T) { _ = len(x /* ERROR invalid argument */ ) } +func _[T interface{ ~string }](x T) { _ = len(x) } +func _[T interface{ ~[10]int }](x T) { _ = len(x) } +func _[T interface{ ~[]byte }](x T) { _ = len(x) } +func _[T interface{ ~map[int]int }](x T) { _ = len(x) } +func _[T interface{ ~chan int }](x T) { _ = len(x) } +func _[T interface{ ~string | ~[]byte | ~chan int }](x T) { _ = len(x) } func _[T any](x T) { _ = cap(x /* ERROR invalid argument */ ) } -func _[T interface{ type int }](x T) { _ = cap(x /* ERROR invalid argument */ ) } -func _[T interface{ type string, []byte, int }](x T) { _ = cap(x /* ERROR invalid argument */ ) } -func _[T interface{ type string }](x T) { _ = cap(x /* ERROR invalid argument */ ) } -func _[T interface{ type [10]int }](x T) { _ = cap(x) } -func _[T interface{ type []byte }](x T) { _ = cap(x) } -func _[T interface{ type map[int]int }](x T) { _ = cap(x /* ERROR invalid argument */ ) } -func _[T interface{ type chan int }](x T) { _ = cap(x) } -func _[T interface{ type []byte, chan int }](x T) { _ = cap(x) } +func _[T interface{ ~int }](x T) { _ = cap(x /* ERROR invalid argument */ ) } +func _[T interface{ ~string | ~[]byte | ~int }](x T) { _ = cap(x /* ERROR invalid argument */ ) } +func _[T interface{ ~string }](x T) { _ = cap(x /* ERROR invalid argument */ ) } +func _[T interface{ ~[10]int }](x T) { _ = cap(x) } +func _[T interface{ ~[]byte }](x T) { _ = cap(x) } +func _[T interface{ ~map[int]int }](x T) { _ = cap(x /* ERROR invalid argument */ ) } +func _[T interface{ ~chan int }](x T) { _ = cap(x) } +func _[T interface{ ~[]byte | ~chan int }](x T) { _ = cap(x) } // range iteration @@ -144,7 +149,7 @@ func _[T interface{}](x T) { for range x /* ERROR cannot range */ {} } -func _[T interface{ type string, []string }](x T) { +func _[T interface{ ~string | ~[]string }](x T) { for range x {} for i := range x { _ = i } for i, _ := range x { _ = i } @@ -156,23 +161,23 @@ func _[T interface{ type string, []string }](x T) { } -func _[T interface{ type string, []rune, map[int]rune }](x T) { +func _[T interface{ ~string | ~[]rune | ~map[int]rune }](x T) { for _, e := range x { _ = e } for i, e := range x { _ = i; _ = e } } -func _[T interface{ type string, []rune, map[string]rune }](x T) { +func _[T interface{ ~string | ~[]rune | ~map[string]rune }](x T) { for _, e := range x { _ = e } for i, e := range x /* ERROR must have the same key type */ { _ = e } } -func _[T interface{ type string, chan int }](x T) { +func _[T interface{ ~string | ~chan int }](x T) { for range x {} for i := range x { _ = i } for i, _ := range x { _ = i } // TODO(gri) should get an error here: channels only return one value } -func _[T interface{ type string, chan<-int }](x T) { +func _[T interface{ ~string | ~chan<-int }](x T) { for i := range x /* ERROR send-only channel */ { _ = i } } @@ -399,7 +404,7 @@ func _[T any](x T) { } } -func _[T interface{type int}](x T) { +func _[T interface{~int}](x T) { _ = x /* ERROR not an interface */ .(int) switch x /* ERROR not an interface */ .(type) { } |