1// Copyright 2010 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
10//       disclaimer in the documentation and/or other materials provided
11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28function Get0(a) {
29  return a[0];
30}
31
32function GetN(a,n) {
33  return a[n];
34}
35
36function GetA0(a) {
37  return a[a[0]];
38}
39
40function GetAN(a,n) {
41  return a[a[n]];
42}
43
44function GetAAN(a,n) {
45  return a[a[a[n]]];
46}
47
48function RunGetTests() {
49  var a = [2,0,1];
50  assertEquals(2, Get0(a));
51
52  assertEquals(2, GetN(a, 0));
53  assertEquals(0, GetN(a, 1));
54  assertEquals(1, GetN(a, 2));
55
56  assertEquals(1, GetA0(a));
57
58  assertEquals(1, GetAN(a,0));
59  assertEquals(2, GetAN(a,1));
60  assertEquals(0, GetAN(a,2));
61
62  assertEquals(0, GetAAN(a,0));
63  assertEquals(1, GetAAN(a,1));
64  assertEquals(2, GetAAN(a,2));
65}
66
67
68function Set07(a) {
69  a[0] = 7;
70}
71
72function Set0V(a, v) {
73  a[0] = v;
74}
75
76function SetN7(a, n) {
77  a[n] = 7;
78}
79
80function SetNX(a, n, x) {
81  a[n] = x;
82}
83
84function RunSetTests(a) {
85  Set07(a);
86  assertEquals(7, a[0]);
87  assertEquals(0, a[1]);
88  assertEquals(0, a[2]);
89
90  Set0V(a, 1);
91  assertEquals(1, a[0]);
92  assertEquals(0, a[1]);
93  assertEquals(0, a[2]);
94
95  SetN7(a, 2);
96  assertEquals(1, a[0]);
97  assertEquals(0, a[1]);
98  assertEquals(7, a[2]);
99
100  SetNX(a, 1, 5);
101  assertEquals(1, a[0]);
102  assertEquals(5, a[1]);
103  assertEquals(7, a[2]);
104
105  for (var i = 0; i < 3; i++) SetNX(a, i, 0);
106  assertEquals(0, a[0]);
107  assertEquals(0, a[1]);
108  assertEquals(0, a[2]);
109}
110
111function RunArrayBoundsCheckTest() {
112  var g = [1,2,3];
113
114  function f(a, i) { a[i] = 42; }
115
116  for (var i = 0; i < 100000; i++) { f(g, 0); }
117
118  f(g, 4);
119
120  assertEquals(42, g[0]);
121  assertEquals(42, g[4]);
122}
123
124var a = [0,0,0];
125var o = {0: 0, 1: 0, 2: 0};
126for (var i = 0; i < 1000; i++) {
127  RunGetTests();
128  RunSetTests(a);
129  RunSetTests(o);
130}
131
132RunArrayBoundsCheckTest();
133