1 /*

     2  * Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  * 

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  * 

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  * 

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  * 

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /*

    25  * NASHORN-377: Typed arrays.

    26  *

    27  * @test

    28  * @run

    29  */

    30 

    31 var types = [Int8Array,Uint8Array,Uint8ClampedArray,Int16Array,Uint16Array,Int32Array,Uint32Array,Float32Array,Float64Array];

    32 

    33 //---------------------------------------------------------------------------

    34 // utility functions

    35 //---------------------------------------------------------------------------

    36 function tohex(d, w) {

    37   var hex = Number(d).toString(16);

    38   var pad = (w ? w : 8) - hex.length;

    39   hex = "00000000".substr(0, pad) + hex;

    40   return hex;

    41 }

    42 

    43 function arrstr(a, n, w) {

    44   var s = "";

    45   if (typeof n == "undefined") n = a.length;

    46   if (typeof w == "undefined") w = a.BYTES_PER_ELEMENT * 2;

    47   for (var i = 0; i < n; i++) {

    48     s += tohex(a[i], w);

    49   }

    50   return s;

    51 }

    52 function bufstr(b) {

    53   if (b.buffer !== undefined) {

    54     b = b.buffer;

    55   }

    56   return arrstr(new Uint8Array(b));

    57 }

    58 

    59 function assertFail(f) {

    60   try {

    61     f();

    62   } catch (e) {

    63     //print(e);

    64     return;

    65   }

    66   throw "assertion failed: expected exception";

    67 }

    68 

    69 function assertTrue(f) {

    70   if (f() !== true) throw "assertion failed: " + f;

    71 }

    72 

    73 function isUndefined(x) {

    74   return typeof x === "undefined";

    75 }

    76 

    77 function fillArray(a, start) {

    78   if (typeof start == "undefined") start = 1;

    79   for (var i = 0; i < a.length; i++) {

    80     a[i] = i + start;

    81   }

    82   return a;

    83 }

    84 

    85 //---------------------------------------------------------------------------

    86 // tests

    87 //---------------------------------------------------------------------------

    88 (function() {

    89   var b = new ArrayBuffer(8);

    90   var i8 = new Int8Array(b);

    91   print(i8.buffer.byteLength, b.byteLength, i8.buffer === b, b.length);

    92   print(b, i8.buffer, i8);

    93 })();

    94 

    95 (function test_attributes() {

    96   var b = new ArrayBuffer(8);

    97   for (var i in types) {

    98     var x = new types[i](b);

    99     print(x.byteOffset, x.byteLength, x.length, x.BYTES_PER_ELEMENT);

   100     assertTrue(function(){ return x.constructor === types[i] });

   101   }

   102 })();

   103 

   104 (function() {

   105   var b = new ArrayBuffer(8);

   106   var i8 = new Int8Array(b);

   107   fillArray(i8, 0x70);

   108 

   109   var i8_2 = new Int8Array(b, 2);

   110   var i8_2_4 = new Uint8Array(b, 2, 4);

   111 

   112   i8_2_4[3] = 0x80;

   113 

   114   print(arrstr(i8, 8, 2)  + " " + bufstr(i8));

   115   print(arrstr(i8_2, 6)   + " " + i8_2.byteOffset   + " " + i8_2.byteLength);

   116   print(arrstr(i8_2_4, 4) + " " + i8_2_4.byteOffset + " " + i8_2_4.byteLength);

   117 

   118   var i8_1_5 = i8.subarray(1, 5);

   119   i8_2_4.subarray(1, 5);

   120   print(arrstr(i8_1_5, 4) + " " + i8_1_5.byteOffset + " " + i8_1_5.byteLength);

   121 

   122   print(bufstr(b.slice(1,7)));

   123 })();

   124 

   125 (function() {

   126   var b = new ArrayBuffer(8);

   127   fillArray(new Int8Array(b), 0x70);

   128   new Int8Array(b)[5] = 0x80;

   129 

   130   var i32 = new Int32Array(b);

   131   var u32 = new Uint32Array(b);

   132   print(arrstr(i32), i32[0], i32[1]);

   133   i32[1] = 0xfefdfcfb;

   134   print(arrstr(i32), i32[0], i32[1]);

   135   print(arrstr(u32), u32[0], u32[1]);

   136 

   137   var pi = 3.1415926;

   138   var f32 = new Float32Array(b);

   139   var f64 = new Float64Array(b);

   140   f32[0] = pi;

   141   print(bufstr(b), f32.length);

   142   f64[0] = pi;

   143   print(bufstr(b), f64.length);

   144   print(arrstr(u32), u32[0], u32[1]);

   145 

   146   var d = new Int32Array(3);

   147   d.set(i32,1);

   148   print(bufstr(d));

   149 

   150   var s = new Int16Array(b);

   151   var t = new Uint16Array(b);

   152   print(arrstr(s), arrstr(t));

   153   s[0] = -1; s[1] = 0x80;

   154   print(arrstr(s), arrstr(t));

   155 })();

   156 

   157 (function enumerate_properties() {

   158   var i8 = new Int8Array(new ArrayBuffer(8));

   159   var s = ""; for (var i in i8) { s += i + " "; } print(s.trim());

   160 })();

   161 

   162 // check that ScriptObject fallback is still working

   163 // DISABLED because correct behavior is unclear

   164 (function() {

   165   // NB: firefox will never set any out-of-bounds or non-array values although it does get both from prototype.

   166   var z = new Uint8Array(4);

   167   z["asdf"] = "asdf"; print(z["asdf"]);

   168   z[0x100000000] = "asdf"; print(z[0x100000000]);

   169   z[-1] = "asdf"; print(z[-1]);

   170 

   171   // v8 and nashorn disagree on out-of-bounds uint32 indices: v8 won't go to the prototype.

   172   z[0xf0000000] = "asdf"; print(z[0xf0000000]);

   173   z[0xffffffff] = "asdf"; print(z[0xffffffff]);

   174   z[0x70000000] = "asdf"; print(z[0x70000000]);

   175 

   176   // this will work in firefox and nashorn (not in v8).

   177   Uint8Array.prototype[4] = "asdf"; print(z[4]);

   178 });

   179 

   180 (function test_exceptions() {

   181   assertFail(function() { new Int32Array(new ArrayBuffer(7)); });

   182   assertFail(function() { new Int32Array(new ArrayBuffer(8), 0, 4); });

   183   assertFail(function() { new Int32Array(new ArrayBuffer(8),-1, 2); });

   184   assertFail(function() { new Int32Array(new ArrayBuffer(8), 0,-1); });

   185 })();

   186 

   187 (function test_subarray() {

   188   var x = fillArray(new Int8Array(8));

   189   print(arrstr(x));

   190   print("subarray(2,4)=" + arrstr(x.subarray(2, 4)), "subarray(-6,-4)=" + arrstr(x.subarray(-6, -4))); // negative index refers from the end of the array

   191   print(arrstr(x.subarray(-10, -2))); // negative index clamped to 0

   192   assertTrue(function(){ return arrstr(x.subarray(6, 4)) === ""; }); // negative length clamped to 0

   193   print(arrstr(x.subarray(1,-1).subarray(1,-1)), arrstr(x.subarray(1,-1).subarray(1,-1).subarray(1,-1))); // subarray of subarray

   194 })();

   195 

   196 (function test_slice() {

   197   var b = ArrayBuffer(16);

   198   fillArray(new Int8Array(b));

   199   print(bufstr(b));

   200   print("slice(4,8)=" + bufstr(b.slice(4, 8)), "slice(-8,-4)=" + bufstr(b.slice(-8, -4))); // negative index refers from the end of the array

   201   print(bufstr(b.slice(-20, -4))); // negative index clamped to 0

   202   assertTrue(function(){ return bufstr(b.slice(8, 4)) === ""; }); // negative length clamped to 0

   203   print(arrstr(new Int16Array(b.slice(1,-1).slice(2,-1).slice(1,-2).slice(1,-1)))); // slice of slice

   204 })();

   205 

   206 (function test_clamped() {

   207   var a = new Uint8ClampedArray(10);

   208   a[0] = -17;       // clamped to 0

   209   a[1] = 4711;      // clamped to 255

   210   a[2] = 17.5;      // clamped to 18

   211   a[3] = 16.5;      // clamped to 16

   212   a[4] = 255.9;     // clamped to 255

   213   a[5] = Infinity;  // clamped to 255

   214   a[6] = -Infinity; // clamped to 0

   215   a[7] = NaN;       // 0

   216   assertTrue(function(){ return a[0] === 0 && a[1] === 255 && a[2] === 18 && a[3] === 16 && a[4] === 255 && a[5] === 255 && a[6] === 0 && a[7] === 0; });

   217 })();

   218 

   219 (function test_out_of_bounds() {

   220   var a = new Int32Array(10);

   221   a[10] = 10;

   222   a[100] = 100;

   223   a[1000] = 1000;

   224   assertTrue(function(){ return isUndefined(a[10]) && isUndefined(a[11]) && isUndefined(a[100]) && isUndefined(a[123]) && isUndefined(a[1000]); });

   225 })();

   226