Mercurial > jdk8-mips64-public > nashorn / file revision

 /*

  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

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

  *

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

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

  * published by the Free Software Foundation.

  *

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

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

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

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

  * accompanied this code).

  *

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

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

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

  *

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

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

  * questions.

  */

 /*

  * NASHORN-377: Typed arrays. Payload for litte and big endian platforms.

  *

  * @subtest

  * @run

  */

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

 //---------------------------------------------------------------------------

 // utility functions

 //---------------------------------------------------------------------------

 function tohex(d, w) {

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

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

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

   return hex;

 }

 function arrstr(a, n, w) {

   var s = "";

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

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

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

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

   }

   return s;

 }

 function bufstr(b) {

   if (b.buffer !== undefined) {

     b = b.buffer;

   }

   return arrstr(new Uint8Array(b));

 }

 function assertFail(f) {

   try {

     f();

   } catch (e) {

     //print(e);

     return;

   }

   throw "assertion failed: expected exception";

 }

 function assertTrue(f) {

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

 }

 function isUndefined(x) {

   return typeof x === "undefined";

 }

 function fillArray(a, start) {

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

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

     a[i] = i + start;

   }

   return a;

 }

 //---------------------------------------------------------------------------

 // tests

 //---------------------------------------------------------------------------

 (function() {

   var b = new ArrayBuffer(8);

   var i8 = new Int8Array(b);

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

   print(b, i8.buffer, i8);

 })();

 (function test_attributes() {

   var b = new ArrayBuffer(8);

   for (var i in types) {

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

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

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

   }

 })();

 (function() {

   var b = new ArrayBuffer(8);

   var i8 = new Int8Array(b);

   fillArray(i8, 0x70);

   var i8_2 = new Int8Array(b, 2);

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

   i8_2_4[3] = 0x80;

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

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

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

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

   i8_2_4.subarray(1, 5);

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

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

 })();

 (function() {

   var b = new ArrayBuffer(8);

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

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

   var i32 = new Int32Array(b);

   var u32 = new Uint32Array(b);

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

   i32[1] = 0xfefdfcfb;

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

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

   var pi = 3.1415926;

   var f32 = new Float32Array(b);

   var f64 = new Float64Array(b);

   f32[0] = pi;

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

   f64[0] = pi;

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

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

   var d = new Int32Array(3);

   d.set(i32,1);

   print(bufstr(d));

   var s = new Int16Array(b);

   var t = new Uint16Array(b);

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

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

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

 })();

 (function enumerate_properties() {

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

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

 })();

 // check that ScriptObject fallback is still working

 // DISABLED because correct behavior is unclear

 (function() {

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

   var z = new Uint8Array(4);

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

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

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

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

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

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

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

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

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

 });

 (function test_exceptions() {

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

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

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

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

 })();

 (function test_subarray() {

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

   print(arrstr(x));

   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

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

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

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

 })();

 (function test_slice() {

   var b = new ArrayBuffer(16);

   fillArray(new Int8Array(b));

   print(bufstr(b));

   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

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

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

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

 })();

 (function test_clamped() {

   var a = new Uint8ClampedArray(10);

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

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

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

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

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

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

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

   a[7] = NaN;       // 0

   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; });

 })();

 (function test_out_of_bounds() {

   var a = new Int32Array(10);

   a[10] = 10;

   a[100] = 100;

   a[1000] = 1000;

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

 })();