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")
        }
}