diff -r 000000000000 -r 8cddb5d3e18f emul/src/main/java/org/apidesign/bck2brwsr/emul/MethodImpl.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/emul/src/main/java/org/apidesign/bck2brwsr/emul/MethodImpl.java Fri Dec 28 08:48:08 2012 +0100 @@ -0,0 +1,97 @@ +/* + * Copyright (c) 1996, 2006, 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. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * 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. + */ +package org.apidesign.bck2brwsr.emul; + +import java.lang.reflect.Method; +import org.apidesign.bck2brwsr.core.JavaScriptBody; + +/** Utilities to work on methods. + * + * @author Jaroslav Tulach + */ +public abstract class MethodImpl { + public static MethodImpl INSTANCE; + static { + try { + Class.forName(Method.class.getName()); + } catch (ClassNotFoundException ex) { + throw new IllegalStateException(ex); + } + } + + protected abstract Method create(Class declaringClass, String name, Object data, String sig); + + + // + // bck2brwsr implementation + // + + @JavaScriptBody(args = {"clazz", "prefix"}, + body = "" + + "var c = clazz.cnstr.prototype;" + + "var arr = new Array();\n" + + "for (m in c) {\n" + + " if (m.indexOf(prefix) === 0) {\n" + + " arr.push(m);\n" + + " arr.push(c[m]);\n" + + " }" + + "}\n" + + "return arr;") + private static native Object[] findMethodData( + Class clazz, String prefix); + + // XXX should not be public + public static Method findMethod( + Class clazz, String name, Class... parameterTypes) { + Object[] data = findMethodData(clazz, name + "__"); + if (data.length == 0) { + return null; + } + String sig = ((String) data[0]).substring(name.length() + 2); + return INSTANCE.create(clazz, name, data[1], sig); + } + + public static Method[] findMethods(Class clazz) { + Object[] namesAndData = findMethodData(clazz, ""); + int cnt = 0; + for (int i = 0; i < namesAndData.length; i += 2) { + String sig = (String) namesAndData[i]; + Object data = namesAndData[i + 1]; + int middle = sig.indexOf("__"); + if (middle == -1) { + continue; + } + String name = sig.substring(0, middle); + sig = sig.substring(middle + 2); + namesAndData[cnt++] = INSTANCE.create(clazz, name, data, sig); + } + Method[] arr = new Method[cnt]; + for (int i = 0; i < cnt; i++) { + arr[i] = (Method) namesAndData[i]; + } + return arr; + } + +}