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go/test/closure.go
Russ Cox be2edb5761 Automated g4 rollback of changelist 25024,
plus significant hand editing.

Back to T{x} for composite literals.

R=r
OCL=25612
CL=25632
2009-03-03 08:39:12 -08:00

89 lines
1.1 KiB
Go

// $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
var c = make(chan int);
func check(a []int) {
for i := 0; i < len(a); i++ {
n := <-c;
if n != a[i] {
panicln("want", a[i], "got", n, "at", i);
}
}
}
func f() {
var i, j int;
i = 1;
j = 2;
f := func() {
c <- i;
i = 4;
g := func() {
c <- i;
c <- j;
};
g();
c <- i;
};
j = 5;
f();
}
// Accumulator generator
func accum(n int) (func(int) int) {
return func(i int) int {
n += i;
return n;
}
}
func g(a, b func(int) int) {
c <- a(2);
c <- b(3);
c <- a(4);
c <- b(5);
}
func h() {
var x8 byte = 100;
var x64 int64 = 200;
c <- int(x8);
c <- int(x64);
f := func(z int) {
g := func() {
c <- int(x8);
c <- int(x64);
c <- z;
};
g();
c <- int(x8);
c <- int(x64);
c <- int(z);
};
x8 = 101;
x64 = 201;
f(500);
}
func main() {
go f();
check([]int{1,4,5,4});
a := accum(0);
b := accum(1);
go g(a, b);
check([]int{2,4,6,9});
go h();
check([]int{100,200,101,201,500,101,201,500});
}