jaroslav@391: /* jaroslav@391: * Copyright (c) 1996, 2006, Oracle and/or its affiliates. All rights reserved. jaroslav@391: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. jaroslav@391: * jaroslav@391: * This code is free software; you can redistribute it and/or modify it jaroslav@391: * under the terms of the GNU General Public License version 2 only, as jaroslav@391: * published by the Free Software Foundation. Oracle designates this jaroslav@391: * particular file as subject to the "Classpath" exception as provided jaroslav@391: * by Oracle in the LICENSE file that accompanied this code. jaroslav@391: * jaroslav@391: * This code is distributed in the hope that it will be useful, but WITHOUT jaroslav@391: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or jaroslav@391: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License jaroslav@391: * version 2 for more details (a copy is included in the LICENSE file that jaroslav@391: * accompanied this code). jaroslav@391: * jaroslav@391: * You should have received a copy of the GNU General Public License version jaroslav@391: * 2 along with this work; if not, write to the Free Software Foundation, jaroslav@391: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. jaroslav@391: * jaroslav@391: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA jaroslav@391: * or visit www.oracle.com if you need additional information or have any jaroslav@391: * questions. jaroslav@391: */ jaroslav@391: package org.apidesign.bck2brwsr.emul; jaroslav@391: jaroslav@391: import java.lang.reflect.Method; jaroslav@418: import java.util.Enumeration; jaroslav@391: import org.apidesign.bck2brwsr.core.JavaScriptBody; jaroslav@391: jaroslav@391: /** Utilities to work on methods. jaroslav@391: * jaroslav@391: * @author Jaroslav Tulach jaroslav@391: */ jaroslav@391: public abstract class MethodImpl { jaroslav@391: public static MethodImpl INSTANCE; jaroslav@391: static { jaroslav@391: try { jaroslav@391: Class.forName(Method.class.getName()); jaroslav@391: } catch (ClassNotFoundException ex) { jaroslav@391: throw new IllegalStateException(ex); jaroslav@391: } jaroslav@391: } jaroslav@391: jaroslav@391: protected abstract Method create(Class declaringClass, String name, Object data, String sig); jaroslav@391: jaroslav@391: jaroslav@391: // jaroslav@391: // bck2brwsr implementation jaroslav@391: // jaroslav@391: jaroslav@391: @JavaScriptBody(args = {"clazz", "prefix"}, jaroslav@391: body = "" jaroslav@391: + "var c = clazz.cnstr.prototype;" jaroslav@391: + "var arr = new Array();\n" jaroslav@391: + "for (m in c) {\n" jaroslav@391: + " if (m.indexOf(prefix) === 0) {\n" jaroslav@391: + " arr.push(m);\n" jaroslav@391: + " arr.push(c[m]);\n" jaroslav@391: + " }" jaroslav@391: + "}\n" jaroslav@391: + "return arr;") jaroslav@391: private static native Object[] findMethodData( jaroslav@391: Class clazz, String prefix); jaroslav@391: jaroslav@391: public static Method findMethod( jaroslav@391: Class clazz, String name, Class... parameterTypes) { jaroslav@391: Object[] data = findMethodData(clazz, name + "__"); jaroslav@420: BIG: for (int i = 0; i < data.length; i += 2) { jaroslav@420: String sig = ((String) data[0]).substring(name.length() + 2); jaroslav@420: Method tmp = INSTANCE.create(clazz, name, data[1], sig); jaroslav@420: Class[] tmpParms = tmp.getParameterTypes(); jaroslav@420: if (parameterTypes.length != tmpParms.length) { jaroslav@420: continue; jaroslav@420: } jaroslav@420: for (int j = 0; j < tmpParms.length; j++) { jaroslav@420: if (!parameterTypes[j].equals(tmpParms[j])) { jaroslav@420: continue BIG; jaroslav@420: } jaroslav@420: } jaroslav@420: return tmp; jaroslav@391: } jaroslav@420: return null; jaroslav@391: } jaroslav@391: jaroslav@392: public static Method[] findMethods(Class clazz, int mask) { jaroslav@391: Object[] namesAndData = findMethodData(clazz, ""); jaroslav@391: int cnt = 0; jaroslav@391: for (int i = 0; i < namesAndData.length; i += 2) { jaroslav@391: String sig = (String) namesAndData[i]; jaroslav@391: Object data = namesAndData[i + 1]; jaroslav@391: int middle = sig.indexOf("__"); jaroslav@391: if (middle == -1) { jaroslav@391: continue; jaroslav@391: } jaroslav@391: String name = sig.substring(0, middle); jaroslav@391: sig = sig.substring(middle + 2); jaroslav@392: final Method m = INSTANCE.create(clazz, name, data, sig); jaroslav@392: if ((m.getModifiers() & mask) == 0) { jaroslav@392: continue; jaroslav@392: } jaroslav@392: namesAndData[cnt++] = m; jaroslav@391: } jaroslav@391: Method[] arr = new Method[cnt]; jaroslav@391: for (int i = 0; i < cnt; i++) { jaroslav@391: arr[i] = (Method) namesAndData[i]; jaroslav@391: } jaroslav@391: return arr; jaroslav@391: } jaroslav@418: jaroslav@418: public static int signatureElements(String sig) { jaroslav@418: Enumeration en = signatureParser(sig); jaroslav@418: int cnt = 0; jaroslav@418: while (en.hasMoreElements()) { jaroslav@418: en.nextElement(); jaroslav@418: cnt++; jaroslav@418: } jaroslav@418: return cnt; jaroslav@418: } jaroslav@391: jaroslav@418: public static Enumeration signatureParser(final String sig) { jaroslav@418: class E implements Enumeration { jaroslav@418: int pos; jaroslav@418: jaroslav@418: public boolean hasMoreElements() { jaroslav@418: return pos < sig.length(); jaroslav@418: } jaroslav@418: jaroslav@418: public Class nextElement() { jaroslav@418: switch (sig.charAt(pos++)) { jaroslav@418: case 'I': jaroslav@418: return Integer.TYPE; jaroslav@418: case 'J': jaroslav@418: return Long.TYPE; jaroslav@418: case 'D': jaroslav@418: return Double.TYPE; jaroslav@418: case 'F': jaroslav@418: return Float.TYPE; jaroslav@418: case 'B': jaroslav@418: return Byte.TYPE; jaroslav@418: case 'Z': jaroslav@418: return Boolean.TYPE; jaroslav@418: case 'S': jaroslav@418: return Short.TYPE; jaroslav@418: case 'V': jaroslav@418: return Void.TYPE; jaroslav@430: case 'C': jaroslav@430: return Character.TYPE; jaroslav@418: case 'L': jaroslav@418: try { jaroslav@418: int up = sig.indexOf("_2"); jaroslav@418: String type = sig.substring(1, up); jaroslav@418: pos = up + 2; jaroslav@418: return Class.forName(type); jaroslav@418: } catch (ClassNotFoundException ex) { jaroslav@418: // should not happen jaroslav@418: } jaroslav@418: } jaroslav@418: throw new UnsupportedOperationException(sig + " at " + pos); jaroslav@418: } jaroslav@418: } jaroslav@418: return new E(); jaroslav@418: } jaroslav@391: }