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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [testsuite/] [go.test/] [test/] [typeswitch1.go] - Blame information for rev 700

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Line No. Rev Author Line
1 700 jeremybenn 
// $G $D/$F.go && $L $F.$A && ./$A.out
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// Copyright 2009 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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import "fmt"
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const (
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        a = iota
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        b
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        c
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        d
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        e
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)
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var x = []int{1, 2, 3}
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func f(x int, len *byte) {
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        *len = byte(x)
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}
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func whatis(x interface{}) string {
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        switch xx := x.(type) {
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        default:
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                return fmt.Sprint("default ", xx)
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        case int, int8, int16, int32:
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                return fmt.Sprint("signed ", xx)
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        case int64:
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                return fmt.Sprint("signed64 ", int64(xx))
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        case uint, uint8, uint16, uint32:
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                return fmt.Sprint("unsigned ", xx)
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        case uint64:
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                return fmt.Sprint("unsigned64 ", uint64(xx))
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        case nil:
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                return fmt.Sprint("nil ", xx)
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        }
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        panic("not reached")
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}
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func whatis1(x interface{}) string {
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        xx := x
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        switch xx.(type) {
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        default:
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                return fmt.Sprint("default ", xx)
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        case int, int8, int16, int32:
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                return fmt.Sprint("signed ", xx)
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        case int64:
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                return fmt.Sprint("signed64 ", xx.(int64))
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        case uint, uint8, uint16, uint32:
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                return fmt.Sprint("unsigned ", xx)
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        case uint64:
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                return fmt.Sprint("unsigned64 ", xx.(uint64))
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        case nil:
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                return fmt.Sprint("nil ", xx)
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        }
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        panic("not reached")
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}
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func check(x interface{}, s string) {
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        w := whatis(x)
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        if w != s {
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                fmt.Println("whatis", x, "=>", w, "!=", s)
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                panic("fail")
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        }
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        w = whatis1(x)
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        if w != s {
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                fmt.Println("whatis1", x, "=>", w, "!=", s)
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                panic("fail")
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        }
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}
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func main() {
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        check(1, "signed 1")
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        check(uint(1), "unsigned 1")
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        check(int64(1), "signed64 1")
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        check(uint64(1), "unsigned64 1")
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        check(1.5, "default 1.5")
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        check(nil, "nil ")
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}

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