1.1 --- a/emul/mini/src/main/java/org/apidesign/bck2brwsr/emul/reflect/MethodImpl.java Thu Feb 14 12:06:16 2013 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,157 +0,0 @@
1.4 -/**
1.5 - * Back 2 Browser Bytecode Translator
1.6 - * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
1.7 - *
1.8 - * This program is free software: you can redistribute it and/or modify
1.9 - * it under the terms of the GNU General Public License as published by
1.10 - * the Free Software Foundation, version 2 of the License.
1.11 - *
1.12 - * This program is distributed in the hope that it will be useful,
1.13 - * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.14 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.15 - * GNU General Public License for more details.
1.16 - *
1.17 - * You should have received a copy of the GNU General Public License
1.18 - * along with this program. Look for COPYING file in the top folder.
1.19 - * If not, see http://opensource.org/licenses/GPL-2.0.
1.20 - */
1.21 -package org.apidesign.bck2brwsr.emul.reflect;
1.22 -
1.23 -import java.lang.reflect.Method;
1.24 -import java.util.Enumeration;
1.25 -import org.apidesign.bck2brwsr.core.JavaScriptBody;
1.26 -
1.27 -/** Utilities to work on methods.
1.28 - *
1.29 - * @author Jaroslav Tulach <jtulach@netbeans.org>
1.30 - */
1.31 -public abstract class MethodImpl {
1.32 - public static MethodImpl INSTANCE;
1.33 - static {
1.34 - try {
1.35 - Class.forName(Method.class.getName());
1.36 - } catch (ClassNotFoundException ex) {
1.37 - throw new IllegalStateException(ex);
1.38 - }
1.39 - }
1.40 -
1.41 - protected abstract Method create(Class<?> declaringClass, String name, Object data, String sig);
1.42 -
1.43 -
1.44 - //
1.45 - // bck2brwsr implementation
1.46 - //
1.47 -
1.48 - @JavaScriptBody(args = {"clazz", "prefix"},
1.49 - body = ""
1.50 - + "var c = clazz.cnstr.prototype;"
1.51 - + "var arr = new Array();\n"
1.52 - + "for (m in c) {\n"
1.53 - + " if (m.indexOf(prefix) === 0) {\n"
1.54 - + " arr.push(m);\n"
1.55 - + " arr.push(c[m]);\n"
1.56 - + " }"
1.57 - + "}\n"
1.58 - + "return arr;")
1.59 - private static native Object[] findMethodData(
1.60 - Class<?> clazz, String prefix);
1.61 -
1.62 - public static Method findMethod(
1.63 - Class<?> clazz, String name, Class<?>... parameterTypes) {
1.64 - Object[] data = findMethodData(clazz, name + "__");
1.65 - BIG: for (int i = 0; i < data.length; i += 2) {
1.66 - String sig = ((String) data[0]).substring(name.length() + 2);
1.67 - Method tmp = INSTANCE.create(clazz, name, data[1], sig);
1.68 - Class<?>[] tmpParms = tmp.getParameterTypes();
1.69 - if (parameterTypes.length != tmpParms.length) {
1.70 - continue;
1.71 - }
1.72 - for (int j = 0; j < tmpParms.length; j++) {
1.73 - if (!parameterTypes[j].equals(tmpParms[j])) {
1.74 - continue BIG;
1.75 - }
1.76 - }
1.77 - return tmp;
1.78 - }
1.79 - return null;
1.80 - }
1.81 -
1.82 - public static Method[] findMethods(Class<?> clazz, int mask) {
1.83 - Object[] namesAndData = findMethodData(clazz, "");
1.84 - int cnt = 0;
1.85 - for (int i = 0; i < namesAndData.length; i += 2) {
1.86 - String sig = (String) namesAndData[i];
1.87 - Object data = namesAndData[i + 1];
1.88 - int middle = sig.indexOf("__");
1.89 - if (middle == -1) {
1.90 - continue;
1.91 - }
1.92 - String name = sig.substring(0, middle);
1.93 - sig = sig.substring(middle + 2);
1.94 - final Method m = INSTANCE.create(clazz, name, data, sig);
1.95 - if ((m.getModifiers() & mask) == 0) {
1.96 - continue;
1.97 - }
1.98 - namesAndData[cnt++] = m;
1.99 - }
1.100 - Method[] arr = new Method[cnt];
1.101 - for (int i = 0; i < cnt; i++) {
1.102 - arr[i] = (Method) namesAndData[i];
1.103 - }
1.104 - return arr;
1.105 - }
1.106 -
1.107 - public static int signatureElements(String sig) {
1.108 - Enumeration<Class> en = signatureParser(sig);
1.109 - int cnt = 0;
1.110 - while (en.hasMoreElements()) {
1.111 - en.nextElement();
1.112 - cnt++;
1.113 - }
1.114 - return cnt;
1.115 - }
1.116 -
1.117 - public static Enumeration<Class> signatureParser(final String sig) {
1.118 - class E implements Enumeration<Class> {
1.119 - int pos;
1.120 -
1.121 - public boolean hasMoreElements() {
1.122 - return pos < sig.length();
1.123 - }
1.124 -
1.125 - public Class nextElement() {
1.126 - switch (sig.charAt(pos++)) {
1.127 - case 'I':
1.128 - return Integer.TYPE;
1.129 - case 'J':
1.130 - return Long.TYPE;
1.131 - case 'D':
1.132 - return Double.TYPE;
1.133 - case 'F':
1.134 - return Float.TYPE;
1.135 - case 'B':
1.136 - return Byte.TYPE;
1.137 - case 'Z':
1.138 - return Boolean.TYPE;
1.139 - case 'S':
1.140 - return Short.TYPE;
1.141 - case 'V':
1.142 - return Void.TYPE;
1.143 - case 'C':
1.144 - return Character.TYPE;
1.145 - case 'L':
1.146 - try {
1.147 - int up = sig.indexOf("_2");
1.148 - String type = sig.substring(1, up);
1.149 - pos = up + 2;
1.150 - return Class.forName(type);
1.151 - } catch (ClassNotFoundException ex) {
1.152 - // should not happen
1.153 - }
1.154 - }
1.155 - throw new UnsupportedOperationException(sig + " at " + pos);
1.156 - }
1.157 - }
1.158 - return new E();
1.159 - }
1.160 -}