2 * Back 2 Browser Bytecode Translator
3 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. Look for COPYING file in the top folder.
16 * If not, see http://opensource.org/licenses/GPL-2.0.
18 package org.apidesign.bck2brwsr.emul.lang;
20 import java.lang.reflect.Method;
21 import org.apidesign.bck2brwsr.core.JavaScriptBody;
25 * @author Jaroslav Tulach <jtulach@netbeans.org>
31 @JavaScriptBody(args = { "value", "srcBegin", "dst", "dstBegin", "count" }, body =
32 "if (srcBegin < dstBegin) {\n" +
33 " while (count-- > 0) {\n" +
34 " dst[dstBegin + count] = value[srcBegin + count];\n" +
37 " while (count-- > 0) {\n" +
38 " dst[dstBegin++] = value[srcBegin++];\n" +
42 public static void arraycopy(Object src, int srcBegin, Object dst, int dstBegin, int count) {
44 Class<?> system = Class.forName("java.lang.System");
45 Method m = system.getMethod("arraycopy", Object.class, int.class, Object.class, int.class, int.class);
46 m.invoke(null, src, srcBegin, dst, dstBegin, count);
47 } catch (Exception ex) {
48 throw new IllegalStateException(ex);
52 @JavaScriptBody(args = { "arr", "expectedSize" }, body =
53 "while (expectedSize-- > arr.length) { arr.push(0); }; return arr;"
55 public static native byte[] expandArray(byte[] arr, int expectedSize);
57 @JavaScriptBody(args = {}, body = "return new Date().getMilliseconds();")
58 public static native long currentTimeMillis();
60 public static long nanoTime() {
61 return 1000000L * currentTimeMillis();
63 @JavaScriptBody(args = { "obj" }, body="return vm.java_lang_Object(false).hashCode__I.call(obj);")
64 public static native int identityHashCode(Object obj);