mirror of
https://github.com/golang/go
synced 2024-11-02 11:50:30 +00:00
ca3c6985cd
Add a new dynamicType node, which is used as a case entry when the type being switched to is generic. Change-Id: Ice77c6f224b8fdd3ff574fdf4a8ea5f6c7ddbe75 Reviewed-on: https://go-review.googlesource.com/c/go/+/339429 Trust: Keith Randall <khr@golang.org> Trust: Dan Scales <danscales@google.com> Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Dan Scales <danscales@google.com>
35 lines
666 B
Go
35 lines
666 B
Go
// run -gcflags=-G=3
|
|
|
|
// 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 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 f[T I](i I) {
|
|
switch x := i.(type) {
|
|
case T:
|
|
println("T", x.foo())
|
|
case myint:
|
|
println("myint", x.foo())
|
|
default:
|
|
println("other", x.foo())
|
|
}
|
|
}
|
|
func main() {
|
|
f[myfloat](myint(6))
|
|
f[myfloat](myfloat(7))
|
|
f[myfloat](myint32(8))
|
|
}
|