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.

package main

// test range over channels

func gen(c chan int, lo, hi int) {
        for i := lo; i <= hi; i++ {
                c <- i
        }
        close(c)
}

func seq(lo, hi int) chan int {
        c := make(chan int)
        go gen(c, lo, hi)
        return c
}

func testchan() {
        s := ""
        for i := range seq('a', 'z') {
                s += string(i)
        }
        if s != "abcdefghijklmnopqrstuvwxyz" {
                println("Wanted lowercase alphabet; got", s)
                panic("fail")
        }
}

// test that range over slice only evaluates
// the expression after "range" once.

var nmake = 0

func makeslice() []int {
        nmake++
        return []int{1, 2, 3, 4, 5}
}

func testslice() {
        s := 0
        nmake = 0
        for _, v := range makeslice() {
                s += v
        }
        if nmake != 1 {
                println("range called makeslice", nmake, "times")
                panic("fail")
        }
        if s != 15 {
                println("wrong sum ranging over makeslice")
                panic("fail")
        }
}

func testslice1() {
        s := 0
        nmake = 0
        for i := range makeslice() {
                s += i
        }
        if nmake != 1 {
                println("range called makeslice", nmake, "times")
                panic("fail")
        }
        if s != 10 {
                println("wrong sum ranging over makeslice")
                panic("fail")
        }
}

// test that range over array only evaluates
// the expression after "range" once.

func makearray() [5]int {
        nmake++
        return [5]int{1, 2, 3, 4, 5}
}

func testarray() {
        s := 0
        nmake = 0
        for _, v := range makearray() {
                s += v
        }
        if nmake != 1 {
                println("range called makearray", nmake, "times")
                panic("fail")
        }
        if s != 15 {
                println("wrong sum ranging over makearray")
                panic("fail")
        }
}

func testarray1() {
        s := 0
        nmake = 0
        for i := range makearray() {
                s += i
        }
        if nmake != 1 {
                println("range called makearray", nmake, "times")
                panic("fail")
        }
        if s != 10 {
                println("wrong sum ranging over makearray")
                panic("fail")
        }
}

func makearrayptr() *[5]int {
        nmake++
        return &[5]int{1, 2, 3, 4, 5}
}

func testarrayptr() {
        nmake = 0
        x := len(makearrayptr())
        if x != 5 || nmake != 1 {
                println("len called makearrayptr", nmake, "times and got len", x)
                panic("fail")
        }
        nmake = 0
        x = cap(makearrayptr())
        if x != 5 || nmake != 1 {
                println("cap called makearrayptr", nmake, "times and got len", x)
                panic("fail")
        }
        s := 0
        nmake = 0
        for _, v := range makearrayptr() {
                s += v
        }
        if nmake != 1 {
                println("range called makearrayptr", nmake, "times")
                panic("fail")
        }
        if s != 15 {
                println("wrong sum ranging over makearrayptr")
                panic("fail")
        }
}

func testarrayptr1() {
        s := 0
        nmake = 0
        for i := range makearrayptr() {
                s += i
        }
        if nmake != 1 {
                println("range called makearrayptr", nmake, "times")
                panic("fail")
        }
        if s != 10 {
                println("wrong sum ranging over makearrayptr")
                panic("fail")
        }
}

// test that range over string only evaluates
// the expression after "range" once.

func makestring() string {
        nmake++
        return "abcd☺"
}

func teststring() {
        var s rune
        nmake = 0
        for _, v := range makestring() {
                s += v
        }
        if nmake != 1 {
                println("range called makestring", nmake, "times")
                panic("fail")
        }
        if s != 'a'+'b'+'c'+'d'+'☺' {
                println("wrong sum ranging over makestring")
                panic("fail")
        }
}

func teststring1() {
        s := 0
        nmake = 0
        for i := range makestring() {
                s += i
        }
        if nmake != 1 {
                println("range called makestring", nmake, "times")
                panic("fail")
        }
        if s != 10 {
                println("wrong sum ranging over makestring")
                panic("fail")
        }
}

// test that range over map only evaluates
// the expression after "range" once.

func makemap() map[int]int {
        nmake++
        return map[int]int{0: 'a', 1: 'b', 2: 'c', 3: 'd', 4: '☺'}
}

func testmap() {
        s := 0
        nmake = 0
        for _, v := range makemap() {
                s += v
        }
        if nmake != 1 {
                println("range called makemap", nmake, "times")
                panic("fail")
        }
        if s != 'a'+'b'+'c'+'d'+'☺' {
                println("wrong sum ranging over makemap")
                panic("fail")
        }
}

func testmap1() {
        s := 0
        nmake = 0
        for i := range makemap() {
                s += i
        }
        if nmake != 1 {
                println("range called makemap", nmake, "times")
                panic("fail")
        }
        if s != 10 {
                println("wrong sum ranging over makemap")
                panic("fail")
        }
}

// test that range evaluates the index and value expressions
// exactly once per iteration.

var ncalls = 0

func getvar(p *int) *int {
        ncalls++
        return p
}

func testcalls() {
        var i, v int
        si := 0
        sv := 0
        for *getvar(&i), *getvar(&v) = range [2]int{1, 2} {
                si += i
                sv += v
        }
        if ncalls != 4 {
                println("wrong number of calls:", ncalls, "!= 4")
                panic("fail")
        }
        if si != 1 || sv != 3 {
                println("wrong sum in testcalls", si, sv)
                panic("fail")
        }

        ncalls = 0
        for *getvar(&i), *getvar(&v) = range [0]int{} {
                println("loop ran on empty array")
                panic("fail")
        }
        if ncalls != 0 {
                println("wrong number of calls:", ncalls, "!= 0")
                panic("fail")
        }
}

func main() {
        testchan()
        testarray()
        testarray1()
        testarrayptr()
        testarrayptr1()
        testslice()
        testslice1()
        teststring()
        teststring1()
        testmap()
        testmap1()
        testcalls()
}