Mercurial > jdk8-mips64-public > nashorn / file comparison
comparison: samples/jsobject.js
samples/jsobject.js
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| 1 #// Usage: jjs -scripting -cp . jsobject.js | |
| 2 | |
| 3 /* | |
| 4 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions | |
| 8 * are met: | |
| 9 * | |
| 10 * - Redistributions of source code must retain the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer. | |
| 12 * | |
| 13 * - Redistributions in binary form must reproduce the above copyright | |
| 14 * notice, this list of conditions and the following disclaimer in the | |
| 15 * documentation and/or other materials provided with the distribution. | |
| 16 * | |
| 17 * - Neither the name of Oracle nor the names of its | |
| 18 * contributors may be used to endorse or promote products derived | |
| 19 * from this software without specific prior written permission. | |
| 20 * | |
| 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
| 22 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
| 23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 25 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 28 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 29 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 32 */ | |
| 33 | |
| 34 // This sample demonstrats how to expose a | |
| 35 // script friendly object from your java code | |
| 36 // by implementing jdk.nashorn.api.scripting.JSObject | |
| 37 | |
| 38 // compile the java program | |
| 39 `javac BufferArray.java`; | |
| 40 | |
| 41 // print error, if any and exit | |
| 42 if ($ERR != '') { | |
| 43 print($ERR); | |
| 44 exit($EXIT); | |
| 45 } | |
| 46 | |
| 47 // create BufferArray | |
| 48 var BufferArray = Java.type("BufferArray"); | |
| 49 var bb = new BufferArray(10); | |
| 50 | |
| 51 // 'magic' methods called to retrieve set/get | |
| 52 // properties on BufferArray instance | |
| 53 var len = bb.length; | |
| 54 print("bb.length = " + len) | |
| 55 for (var i = 0; i < len; i++) { | |
| 56 bb[i] = i*i; | |
| 57 } | |
| 58 | |
| 59 for (var i = 0; i < len; i++) { | |
| 60 print(bb[i]); | |
| 61 } | |
| 62 | |
| 63 // get underlying buffer by calling a method | |
| 64 // on BufferArray magic object | |
| 65 | |
| 66 // 'buf' is a function member | |
| 67 print(typeof bb.buf); | |
| 68 var buf = bb.buf(); | |
| 69 | |
| 70 // use retrieved underlying nio buffer | |
| 71 var cap = buf.capacity(); | |
| 72 print("buf.capacity() = " + cap); | |
| 73 for (var i = 0; i < cap; i++) { | |
| 74 print(buf.get(i)); | |
| 75 } |
