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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>
49 lines
837 B
Go
49 lines
837 B
Go
// run
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// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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type I interface{ foo() int }
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type J interface {
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I
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bar()
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}
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type myint int
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func (x myint) foo() int { return int(x) }
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type myfloat float64
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func (x myfloat) foo() int { return int(x) }
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type myint32 int32
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func (x myint32) foo() int { return int(x) }
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func (x myint32) bar() {}
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func f[T I](i I) {
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switch x := i.(type) {
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case T:
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println("T", x.foo())
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case myint:
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println("myint", x.foo())
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default:
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println("other", x.foo())
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}
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}
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func main() {
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f[myfloat](myint(6))
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f[myfloat](myfloat(7))
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f[myfloat](myint32(8))
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f[myint32](myint32(8))
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f[myint32](myfloat(7))
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f[myint](myint32(9))
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f[I](myint(10))
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f[J](myint(11))
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f[J](myint32(12))
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}
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