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// $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.
package main
type T struct {
a float64;
b int64;
c string;
d byte;
}
var a = []int{ 1, 2, 3 }
var NIL []int;
func arraycmptest() {
if NIL != nil {
println("fail1:", NIL, "!= nil");
}
if nil != NIL {
println("fail2: nil !=", NIL);
}
if a == nil || nil == a {
println("fail3:", a, "== nil");
}
}
func SameArray(a, b []int) bool {
if len(a) != len(b) || cap(a) != cap(b) {
return false;
}
if len(a) > 0 && &a[0] != &b[0] {
return false;
}
return true;
}
var t = T{1.5, 123, "hello", 255}
var mt = make(map[int]T)
var ma = make(map[int][]int)
func maptest() {
mt[0] = t;
t1 := mt[0];
if t1.a != t.a || t1.b != t.b || t1.c != t.c || t1.d != t.d {
println("fail: map val struct", t1.a, t1.b, t1.c, t1.d);
}
ma[1] = a;
a1 := ma[1];
if !SameArray(a, a1) {
println("fail: map val array", a, a1);
}
}
var ct = make(chan T)
var ca = make(chan []int)
func send() {
ct <- t;
ca <- a;
}
func chantest() {
go send();
t1 := <-ct;
if t1.a != t.a || t1.b != t.b || t1.c != t.c || t1.d != t.d {
println("fail: map val struct", t1.a, t1.b, t1.c, t1.d);
}
a1 := <-ca;
if !SameArray(a, a1) {
println("fail: map val array", a, a1);
}
}
type E struct { }
var e E
func interfacetest() {
var i interface{};
i = a;
a1 := i.([]int);
if !SameArray(a, a1) {
println("interface <-> []int", a, a1);
}
pa := new([]int);
*pa = a;
i = pa;
a1 = *i.(*[]int);
if !SameArray(a, a1) {
println("interface <-> *[]int", a, a1);
}
i = t;
t1 := i.(T);
if t1.a != t.a || t1.b != t.b || t1.c != t.c || t1.d != t.d {
println("interface <-> struct", t1.a, t1.b, t1.c, t1.d);
}
i = e;
e1 := i.(E);
// nothing to check; just verify it doesn't crash
_ = e1;
}
func main() {
arraycmptest();
maptest();
chantest();
interfacetest();
}
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