Subversion Repositories openrisc

// $G $D/$F.go && $L $F.$A && ./$A.out

// Copyright 2009 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.

// Implicit methods for embedded types.

// Mixed pointer and non-pointer receivers.

package main

type T int

var nv, np int

func (t T) V() {

        if t != 42 {

                panic(t)

        }

        nv++

}

func (t *T) P() {

        if *t != 42 {

                println(t, *t)

                panic("fail")

        }

        np++

}

type V interface {

        V()

}

type P interface {

        P()

        V()

}

type S struct {

        T

}

type SP struct {

        *T

}

func main() {

        var t T

        var v V

        var p P

        t = 42

        t.P()

        t.V()

        v = t

        v.V()

        p = &t

        p.P()

        p.V()

        v = &t

        v.V()

        //      p = t   // ERROR

        var i interface{} = t

        if _, ok := i.(P); ok {

                println("dynamic i.(P) succeeded incorrectly")

                panic("fail")

        }

        //      println("--struct--");

        var s S

        s.T = 42

        s.P()

        s.V()

        v = s

        s.V()

        p = &s

        p.P()

        p.V()

        v = &s

        v.V()

        //      p = s   // ERROR

        var j interface{} = s

        if _, ok := j.(P); ok {

                println("dynamic j.(P) succeeded incorrectly")

                panic("fail")

        }

        //      println("--struct pointer--");

        var sp SP

        sp.T = &t

        sp.P()

        sp.V()

        v = sp

        sp.V()

        p = &sp

        p.P()

        p.V()

        v = &sp

        v.V()

        p = sp // not error

        p.P()

        p.V()

        if nv != 13 || np != 7 {

                println("bad count", nv, np)

                panic("fail")

        }

}