mirror of
https://github.com/golang/go
synced 2024-11-15 00:20:30 -07:00
d168c4f296
None of the current generic type switch test cases exercise type switches where the instantiated case is an interface type. Change-Id: I9272fa61b8dde1fe1a3702d524d4f40253ef19b2 Reviewed-on: https://go-review.googlesource.com/c/go/+/390354 Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
47 lines
813 B
Go
47 lines
813 B
Go
// run
|
|
|
|
// Copyright 2021 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 main
|
|
|
|
type I interface{ foo() int }
|
|
type J interface {
|
|
I
|
|
bar()
|
|
}
|
|
|
|
type myint int
|
|
|
|
func (x myint) foo() int { return int(x) }
|
|
|
|
type myfloat float64
|
|
|
|
func (x myfloat) foo() int { return int(x) }
|
|
|
|
type myint32 int32
|
|
|
|
func (x myint32) foo() int { return int(x) }
|
|
func (x myint32) bar() {}
|
|
|
|
func f[T I](i I) {
|
|
switch x := i.(type) {
|
|
case T, myint32:
|
|
println("T/myint32", x.foo())
|
|
default:
|
|
println("other", x.foo())
|
|
}
|
|
}
|
|
func main() {
|
|
f[myfloat](myint(6))
|
|
f[myfloat](myfloat(7))
|
|
f[myfloat](myint32(8))
|
|
f[myint32](myint32(9))
|
|
f[myint](myint32(10))
|
|
f[myint](myfloat(42))
|
|
f[I](myint(10))
|
|
f[J](myint(11))
|
|
f[J](myint32(12))
|
|
}
|