1.1 --- a/emul/src/main/java/org/apidesign/bck2brwsr/emul/MethodImpl.java Wed Jan 23 20:16:48 2013 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,164 +0,0 @@
1.4 -/*
1.5 - * Copyright (c) 1996, 2006, Oracle and/or its affiliates. All rights reserved.
1.6 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 - *
1.8 - * This code is free software; you can redistribute it and/or modify it
1.9 - * under the terms of the GNU General Public License version 2 only, as
1.10 - * published by the Free Software Foundation. Oracle designates this
1.11 - * particular file as subject to the "Classpath" exception as provided
1.12 - * by Oracle in the LICENSE file that accompanied this code.
1.13 - *
1.14 - * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 - * version 2 for more details (a copy is included in the LICENSE file that
1.18 - * accompanied this code).
1.19 - *
1.20 - * You should have received a copy of the GNU General Public License version
1.21 - * 2 along with this work; if not, write to the Free Software Foundation,
1.22 - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 - *
1.24 - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 - * or visit www.oracle.com if you need additional information or have any
1.26 - * questions.
1.27 - */
1.28 -package org.apidesign.bck2brwsr.emul;
1.29 -
1.30 -import java.lang.reflect.Method;
1.31 -import java.util.Enumeration;
1.32 -import org.apidesign.bck2brwsr.core.JavaScriptBody;
1.33 -
1.34 -/** Utilities to work on methods.
1.35 - *
1.36 - * @author Jaroslav Tulach <jtulach@netbeans.org>
1.37 - */
1.38 -public abstract class MethodImpl {
1.39 - public static MethodImpl INSTANCE;
1.40 - static {
1.41 - try {
1.42 - Class.forName(Method.class.getName());
1.43 - } catch (ClassNotFoundException ex) {
1.44 - throw new IllegalStateException(ex);
1.45 - }
1.46 - }
1.47 -
1.48 - protected abstract Method create(Class<?> declaringClass, String name, Object data, String sig);
1.49 -
1.50 -
1.51 - //
1.52 - // bck2brwsr implementation
1.53 - //
1.54 -
1.55 - @JavaScriptBody(args = {"clazz", "prefix"},
1.56 - body = ""
1.57 - + "var c = clazz.cnstr.prototype;"
1.58 - + "var arr = new Array();\n"
1.59 - + "for (m in c) {\n"
1.60 - + " if (m.indexOf(prefix) === 0) {\n"
1.61 - + " arr.push(m);\n"
1.62 - + " arr.push(c[m]);\n"
1.63 - + " }"
1.64 - + "}\n"
1.65 - + "return arr;")
1.66 - private static native Object[] findMethodData(
1.67 - Class<?> clazz, String prefix);
1.68 -
1.69 - public static Method findMethod(
1.70 - Class<?> clazz, String name, Class<?>... parameterTypes) {
1.71 - Object[] data = findMethodData(clazz, name + "__");
1.72 - BIG: for (int i = 0; i < data.length; i += 2) {
1.73 - String sig = ((String) data[0]).substring(name.length() + 2);
1.74 - Method tmp = INSTANCE.create(clazz, name, data[1], sig);
1.75 - Class<?>[] tmpParms = tmp.getParameterTypes();
1.76 - if (parameterTypes.length != tmpParms.length) {
1.77 - continue;
1.78 - }
1.79 - for (int j = 0; j < tmpParms.length; j++) {
1.80 - if (!parameterTypes[j].equals(tmpParms[j])) {
1.81 - continue BIG;
1.82 - }
1.83 - }
1.84 - return tmp;
1.85 - }
1.86 - return null;
1.87 - }
1.88 -
1.89 - public static Method[] findMethods(Class<?> clazz, int mask) {
1.90 - Object[] namesAndData = findMethodData(clazz, "");
1.91 - int cnt = 0;
1.92 - for (int i = 0; i < namesAndData.length; i += 2) {
1.93 - String sig = (String) namesAndData[i];
1.94 - Object data = namesAndData[i + 1];
1.95 - int middle = sig.indexOf("__");
1.96 - if (middle == -1) {
1.97 - continue;
1.98 - }
1.99 - String name = sig.substring(0, middle);
1.100 - sig = sig.substring(middle + 2);
1.101 - final Method m = INSTANCE.create(clazz, name, data, sig);
1.102 - if ((m.getModifiers() & mask) == 0) {
1.103 - continue;
1.104 - }
1.105 - namesAndData[cnt++] = m;
1.106 - }
1.107 - Method[] arr = new Method[cnt];
1.108 - for (int i = 0; i < cnt; i++) {
1.109 - arr[i] = (Method) namesAndData[i];
1.110 - }
1.111 - return arr;
1.112 - }
1.113 -
1.114 - public static int signatureElements(String sig) {
1.115 - Enumeration<Class> en = signatureParser(sig);
1.116 - int cnt = 0;
1.117 - while (en.hasMoreElements()) {
1.118 - en.nextElement();
1.119 - cnt++;
1.120 - }
1.121 - return cnt;
1.122 - }
1.123 -
1.124 - public static Enumeration<Class> signatureParser(final String sig) {
1.125 - class E implements Enumeration<Class> {
1.126 - int pos;
1.127 -
1.128 - public boolean hasMoreElements() {
1.129 - return pos < sig.length();
1.130 - }
1.131 -
1.132 - public Class nextElement() {
1.133 - switch (sig.charAt(pos++)) {
1.134 - case 'I':
1.135 - return Integer.TYPE;
1.136 - case 'J':
1.137 - return Long.TYPE;
1.138 - case 'D':
1.139 - return Double.TYPE;
1.140 - case 'F':
1.141 - return Float.TYPE;
1.142 - case 'B':
1.143 - return Byte.TYPE;
1.144 - case 'Z':
1.145 - return Boolean.TYPE;
1.146 - case 'S':
1.147 - return Short.TYPE;
1.148 - case 'V':
1.149 - return Void.TYPE;
1.150 - case 'C':
1.151 - return Character.TYPE;
1.152 - case 'L':
1.153 - try {
1.154 - int up = sig.indexOf("_2");
1.155 - String type = sig.substring(1, up);
1.156 - pos = up + 2;
1.157 - return Class.forName(type);
1.158 - } catch (ClassNotFoundException ex) {
1.159 - // should not happen
1.160 - }
1.161 - }
1.162 - throw new UnsupportedOperationException(sig + " at " + pos);
1.163 - }
1.164 - }
1.165 - return new E();
1.166 - }
1.167 -}