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Diffstat (limited to 'test/ken/array.go')
-rw-r--r-- | test/ken/array.go | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/test/ken/array.go b/test/ken/array.go new file mode 100644 index 0000000..9412e35 --- /dev/null +++ b/test/ken/array.go @@ -0,0 +1,138 @@ +// run + +// 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. + +// Test arrays and slices. + +package main + +func setpd(a []int) { + // print("setpd a=", a, " len=", len(a), " cap=", cap(a), "\n"); + for i := 0; i < len(a); i++ { + a[i] = i + } +} + +func sumpd(a []int) int { + // print("sumpd a=", a, " len=", len(a), " cap=", cap(a), "\n"); + t := 0 + for i := 0; i < len(a); i++ { + t += a[i] + } + // print("sumpd t=", t, "\n"); + return t +} + +func setpf(a *[20]int) { + // print("setpf a=", a, " len=", len(a), " cap=", cap(a), "\n"); + for i := 0; i < len(a); i++ { + a[i] = i + } +} + +func sumpf(a *[20]int) int { + // print("sumpf a=", a, " len=", len(a), " cap=", cap(a), "\n"); + t := 0 + for i := 0; i < len(a); i++ { + t += a[i] + } + // print("sumpf t=", t, "\n"); + return t +} + +func res(t int, lb, hb int) { + sb := (hb - lb) * (hb + lb - 1) / 2 + if t != sb { + print("lb=", lb, + "; hb=", hb, + "; t=", t, + "; sb=", sb, + "\n") + panic("res") + } +} + +// call ptr dynamic with ptr dynamic +func testpdpd() { + a := make([]int, 10, 100) + if len(a) != 10 && cap(a) != 100 { + print("len and cap from new: ", len(a), " ", cap(a), "\n") + panic("fail") + } + + a = a[0:100] + setpd(a) + + a = a[0:10] + res(sumpd(a), 0, 10) + + a = a[5:25] + res(sumpd(a), 5, 25) + + a = a[30:95] + res(sumpd(a), 35, 100) +} + +// call ptr fixed with ptr fixed +func testpfpf() { + var a [20]int + + setpf(&a) + res(sumpf(&a), 0, 20) +} + +// call ptr dynamic with ptr fixed from new +func testpdpf1() { + a := new([40]int) + setpd(a[0:]) + res(sumpd(a[0:]), 0, 40) + + b := (*a)[5:30] + res(sumpd(b), 5, 30) +} + +// call ptr dynamic with ptr fixed from var +func testpdpf2() { + var a [80]int + + setpd(a[0:]) + res(sumpd(a[0:]), 0, 80) +} + +// generate bounds error with ptr dynamic +func testpdfault() { + a := make([]int, 100) + + print("good\n") + for i := 0; i < 100; i++ { + a[i] = 0 + } + print("should fault\n") + a[100] = 0 + print("bad\n") +} + +// generate bounds error with ptr fixed +func testfdfault() { + var a [80]int + + print("good\n") + for i := 0; i < 80; i++ { + a[i] = 0 + } + print("should fault\n") + x := 80 + a[x] = 0 + print("bad\n") +} + +func main() { + testpdpd() + testpfpf() + testpdpf1() + testpdpf2() + // print("testpdfault\n"); testpdfault(); + // print("testfdfault\n"); testfdfault(); +} |