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// 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.
// This is a version of ../conv.go with type params
// Check that constants defined as a conversion are accepted.
package main
import "fmt"
// For now, a lone type parameter is not permitted as RHS in a type declaration (issue #45639).
// type Other[T interface{ ~int | ~uint }] T // Imagine this is in another package.
type Other int
const (
// alpha Other[int] = iota
alpha Other = iota
beta
gamma
delta
)
// type Conv2 Other[int]
type Conv2 Other
const (
Alpha = Conv2(alpha)
Beta = Conv2(beta)
Gamma = Conv2(gamma)
Delta = Conv2(delta)
)
func main() {
ck(Alpha, "Alpha")
ck(Beta, "Beta")
ck(Gamma, "Gamma")
ck(Delta, "Delta")
ck(42, "Conv2(42)")
}
func ck(c Conv2, str string) {
if fmt.Sprint(c) != str {
panic("conv2.go: " + str)
}
}
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