| // Copyright 2020 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package generics |
| |
| func _[A, B any](a A, b B) int {} |
| func _[T any](x, y T) T |
| |
| type T[P any] struct{} |
| type T[P1, P2, P3 any] struct{} |
| |
| type T[P C] struct{} |
| type T[P1, P2, P3 C] struct{} |
| |
| type T[P C[P]] struct{} |
| type T[P1, P2, P3 C[P1, P2, P3]] struct{} |
| |
| func f[P any](x P) |
| func f[P1, P2, P3 any](x1 P1, x2 P2, x3 P3) struct{} |
| |
| func f[P interface{}](x P) |
| func f[P1, P2, P3 interface{ m1(P1); ~P2|~P3 }](x1 P1, x2 P2, x3 P3) struct{} |
| func f[P any](T1[P], T2[P]) T3[P] |
| |
| func (x T[P]) m() |
| func ((T[P])) m(x T[P]) P |
| |
| func _() { |
| type _ []T[P] |
| var _ []T[P] |
| _ = []T[P]{} |
| } |
| |
| // type constraint literals with elided interfaces |
| func _[P ~int, Q int | string]() {} |
| func _[P struct{f int}, Q *P]() {} |
| |
| // various potentially ambiguous type parameter lists (issue #49482) |
| type _[P *T,] struct{} |
| type _[P *T, _ any] struct{} |
| type _[P (*T),] struct{} |
| type _[P (*T), _ any] struct{} |
| type _[P (T),] struct{} |
| type _[P (T), _ any] struct{} |
| |
| type _[P *struct{}] struct{} |
| type _[P (*struct{})] struct{} |
| type _[P ([]int)] struct{} |
| |
| // array type declarations |
| type _ [P(T)]struct{} |
| type _ [P((T))]struct{} |
| type _ [P * *T]struct{} |
| type _ [P * T]struct{} |
| type _ [P(*T)]struct{} |
| type _ [P(**T)]struct{} |
| type _ [P * T]struct{} |
| type _ [P * T - T]struct{} |
| |
| type _[ |
| P *T, |
| ] struct{} |
| |
| // equivalent test cases for potentially ambiguous type parameter lists, except |
| // for function declarations there is no ambiguity (issue #51548) |
| func _[P *T,]() {} |
| func _[P *T, _ any]() {} |
| func _[P (*T),]() {} |
| func _[P (*T), _ any]() {} |
| func _[P (T),]() {} |
| func _[P (T), _ any]() {} |
| |
| func _[P *struct{}] () {} |
| func _[P (*struct{})] () {} |
| func _[P ([]int)] () {} |
| |
| func _ [P(T)]() {} |
| func _ [P((T))]() {} |
| func _ [P * *T]() {} |
| func _ [P * T]() {} |
| func _ [P(*T)]() {} |
| func _ [P(**T)]() {} |
| func _ [P * T]() {} |
| |
| func _[ |
| P *T, |
| ]() {} |