jaroslav@560: /**
jaroslav@560:  * Back 2 Browser Bytecode Translator
jaroslav@560:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@560:  *
jaroslav@560:  * This program is free software: you can redistribute it and/or modify
jaroslav@560:  * it under the terms of the GNU General Public License as published by
jaroslav@560:  * the Free Software Foundation, version 2 of the License.
jaroslav@560:  *
jaroslav@560:  * This program is distributed in the hope that it will be useful,
jaroslav@560:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@560:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@560:  * GNU General Public License for more details.
jaroslav@560:  *
jaroslav@560:  * You should have received a copy of the GNU General Public License
jaroslav@560:  * along with this program. Look for COPYING file in the top folder.
jaroslav@560:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@560:  */
jaroslav@560: package org.apidesign.bck2brwsr.emul.lang;
jaroslav@560: 
jaroslav@694: import java.lang.reflect.Method;
jaroslav@568: import org.apidesign.bck2brwsr.core.JavaScriptBody;
jaroslav@568: 
jaroslav@560: /**
jaroslav@560:  *
jaroslav@560:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@560:  */
jaroslav@560: public class System {
jaroslav@560:     private System() {
jaroslav@560:     }
jaroslav@560: 
jaroslav@568:     @JavaScriptBody(args = { "value", "srcBegin", "dst", "dstBegin", "count" }, body = 
jaroslav@568:         "if (srcBegin < dstBegin) {\n" +
jaroslav@568:         "    while (count-- > 0) {\n" +
jaroslav@568:         "        dst[dstBegin + count] = value[srcBegin + count];\n" +
jaroslav@568:         "    }\n" +
jaroslav@568:         "} else {\n" +
jaroslav@568:         "    while (count-- > 0) {\n" +
jaroslav@568:         "        dst[dstBegin++] = value[srcBegin++];\n" +
jaroslav@568:         "    }\n" +
jaroslav@568:         "}"
jaroslav@568:     )
jaroslav@694:     public static void arraycopy(Object src, int srcBegin, Object dst, int dstBegin, int count) {
jaroslav@694:         try {
jaroslav@694:             Class<?> system = Class.forName("java.lang.System");
jaroslav@694:             Method m = system.getMethod("arraycopy", Object.class, int.class, Object.class, int.class, int.class);
jaroslav@694:             m.invoke(null, src, srcBegin, dst, dstBegin, count);
jaroslav@694:         } catch (Exception ex) {
jaroslav@694:             throw new IllegalStateException(ex);
jaroslav@694:         }
jaroslav@694:     }
jaroslav@595: 
jaroslav@595:     @JavaScriptBody(args = { "arr", "expectedSize" }, body = 
jaroslav@595:         "while (expectedSize-- > arr.length) { arr.push(0); }; return arr;"
jaroslav@595:     )
jaroslav@595:     public static native byte[] expandArray(byte[] arr, int expectedSize);
jaroslav@599: 
lubomir@688:     @JavaScriptBody(args = {}, body = "return new Date().getMilliseconds();")
jaroslav@636:     public static native long currentTimeMillis();
jaroslav@604:     
jaroslav@636:     public static long nanoTime() {
jaroslav@668:         return 1000000L * currentTimeMillis();
jaroslav@636:     }
jaroslav@604:     @JavaScriptBody(args = { "obj" }, body="return vm.java_lang_Object(false).hashCode__I.call(obj);")
jaroslav@604:     public static native int identityHashCode(Object obj);
jaroslav@560: }