jaroslav@604
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/**
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jaroslav@604
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* Back 2 Browser Bytecode Translator
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* Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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*
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jaroslav@604
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* This program is free software: you can redistribute it and/or modify
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jaroslav@604
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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jaroslav@391
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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jaroslav@391
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*
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jaroslav@604
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* You should have received a copy of the GNU General Public License
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* along with this program. Look for COPYING file in the top folder.
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* If not, see http://opensource.org/licenses/GPL-2.0.
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jaroslav@391
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*/
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package org.apidesign.bck2brwsr.emul.reflect;
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import java.lang.reflect.Array;
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jaroslav@1321
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Method;
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import java.util.Enumeration;
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import org.apidesign.bck2brwsr.core.Exported;
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import org.apidesign.bck2brwsr.core.JavaScriptBody;
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/** Utilities to work on methods.
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*
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* @author Jaroslav Tulach <jtulach@netbeans.org>
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*/
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public abstract class MethodImpl {
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public static MethodImpl INSTANCE;
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static {
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try {
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jaroslav@391
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Class.forName(Method.class.getName());
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jaroslav@391
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} catch (ClassNotFoundException ex) {
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throw new IllegalStateException(ex);
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jaroslav@391
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}
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}
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protected abstract Method create(Class<?> declaringClass, String name, Object data, String sig);
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protected abstract Constructor create(Class<?> declaringClass, Object data, String sig);
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jaroslav@391
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//
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// bck2brwsr implementation
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//
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@JavaScriptBody(args = {"clazz", "prefix", "cnstr"},
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body = ""
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+ "var c = clazz.cnstr;\n"
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+ "if (!cnstr) c = c.prototype;\n"
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+ "var arr = new Array();\n"
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+ "function check(m) {\n"
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+ " if (m.indexOf(prefix) === 0) {\n"
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+ " if (!c[m].cls) return;\n"
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+ " arr.push(m);\n"
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+ " arr.push(c[m]);\n"
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+ " arr.push(c[m].cls.$class);\n"
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+ " }\n"
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+ "}\n"
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+ "for (m in c) {\n"
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+ " check(m)\n"
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+ "}\n"
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+ "check('wait__V');\n"
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+ "check('wait__VJ');\n"
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+ "check('wait__VJI');\n"
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+ "check('equals__ZLjava_lang_Object_2');\n"
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+ "check('toString__Ljava_lang_String_2');\n"
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+ "check('hashCode__I');\n"
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+ "check('getClass__Ljava_lang_Class_2');\n"
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+ "check('notify__V');\n"
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+ "check('notifyAll__V');\n"
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+ "return arr;\n")
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private static native Object[] findMethodData(
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Class<?> clazz, String prefix, boolean cnstr);
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public static Constructor findConstructor(
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Class<?> clazz, Class<?>... parameterTypes) {
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Object[] data = findMethodData(clazz, "cons__", true);
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jaroslav@1321
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BIG: for (int i = 0; i < data.length; i += 3) {
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String sig = ((String) data[i]).substring(6);
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Class<?> cls = (Class<?>) data[i + 2];
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Constructor tmp = INSTANCE.create(cls, data[i + 1], sig);
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Class<?>[] tmpParms = tmp.getParameterTypes();
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if (parameterTypes.length != tmpParms.length) {
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continue;
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}
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for (int j = 0; j < tmpParms.length; j++) {
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if (!parameterTypes[j].equals(tmpParms[j])) {
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continue BIG;
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}
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}
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return tmp;
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}
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return null;
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}
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public static Constructor[] findConstructors(Class<?> clazz, int mask) {
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jaroslav@1321
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Object[] namesAndData = findMethodData(clazz, "", true);
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int cnt = 0;
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jaroslav@1321
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for (int i = 0; i < namesAndData.length; i += 3) {
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String sig = (String) namesAndData[i];
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Object data = namesAndData[i + 1];
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if (!sig.startsWith("cons__")) {
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continue;
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}
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sig = sig.substring(6);
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Class<?> cls = (Class<?>) namesAndData[i + 2];
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final Constructor m = INSTANCE.create(cls, data, sig);
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if ((m.getModifiers() & mask) == 0) {
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continue;
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}
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namesAndData[cnt++] = m;
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}
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Constructor[] arr = new Constructor[cnt];
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for (int i = 0; i < cnt; i++) {
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arr[i] = (Constructor) namesAndData[i];
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}
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return arr;
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}
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public static Method findMethod(
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Class<?> clazz, String name, Class<?>... parameterTypes) {
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jaroslav@1321
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Object[] data = findMethodData(clazz, name + "__", false);
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BIG: for (int i = 0; i < data.length; i += 3) {
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String sig = ((String) data[i]).substring(name.length() + 2);
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Class<?> cls = (Class<?>) data[i + 2];
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Method tmp = INSTANCE.create(cls, name, data[i + 1], sig);
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Class<?>[] tmpParms = tmp.getParameterTypes();
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jaroslav@420
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if (parameterTypes.length != tmpParms.length) {
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continue;
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}
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for (int j = 0; j < tmpParms.length; j++) {
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jaroslav@420
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if (!parameterTypes[j].equals(tmpParms[j])) {
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continue BIG;
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jaroslav@420
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}
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}
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jaroslav@420
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return tmp;
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}
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return null;
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}
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public static Method[] findMethods(Class<?> clazz, int mask) {
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jaroslav@1321
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Object[] namesAndData = findMethodData(clazz, "", false);
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jaroslav@391
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int cnt = 0;
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jaroslav@654
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for (int i = 0; i < namesAndData.length; i += 3) {
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jaroslav@391
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String sig = (String) namesAndData[i];
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jaroslav@391
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Object data = namesAndData[i + 1];
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jaroslav@391
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int middle = sig.indexOf("__");
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jaroslav@391
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if (middle == -1) {
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continue;
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}
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if (sig.startsWith("$") && sig.endsWith("$")) {
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// produced by Closure compiler in debug mode
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// needs to be ignored
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continue;
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}
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String name = sig.substring(0, middle);
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sig = sig.substring(middle + 2);
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Class<?> cls = (Class<?>) namesAndData[i + 2];
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final Method m = INSTANCE.create(cls, name, data, sig);
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jaroslav@392
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if ((m.getModifiers() & mask) == 0) {
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jaroslav@392
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continue;
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jaroslav@392
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}
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namesAndData[cnt++] = m;
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}
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Method[] arr = new Method[cnt];
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jaroslav@391
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for (int i = 0; i < cnt; i++) {
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arr[i] = (Method) namesAndData[i];
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}
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return arr;
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jaroslav@391
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}
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@Exported static String toSignature(Method m) {
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jaroslav@650
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StringBuilder sb = new StringBuilder();
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jaroslav@650
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sb.append(m.getName()).append("__");
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jaroslav@650
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appendType(sb, m.getReturnType());
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jaroslav@650
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Class<?>[] arr = m.getParameterTypes();
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jaroslav@650
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for (int i = 0; i < arr.length; i++) {
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jaroslav@650
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appendType(sb, arr[i]);
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jaroslav@650
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}
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jaroslav@650
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return sb.toString();
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jaroslav@650
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}
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jaroslav@650
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jaroslav@650
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private static void appendType(StringBuilder sb, Class<?> type) {
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jaroslav@650
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if (type == Integer.TYPE) {
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jaroslav@650
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sb.append('I');
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jaroslav@650
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188 |
return;
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jaroslav@650
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}
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jaroslav@650
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190 |
if (type == Long.TYPE) {
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jaroslav@650
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sb.append('J');
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jaroslav@650
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return;
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jaroslav@650
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}
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jaroslav@650
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194 |
if (type == Double.TYPE) {
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jaroslav@650
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sb.append('D');
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jaroslav@650
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196 |
return;
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jaroslav@650
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}
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jaroslav@650
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198 |
if (type == Float.TYPE) {
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jaroslav@650
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sb.append('F');
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jaroslav@650
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200 |
return;
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jaroslav@650
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201 |
}
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jaroslav@650
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if (type == Byte.TYPE) {
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jaroslav@650
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sb.append('B');
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jaroslav@650
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return;
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jaroslav@650
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}
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jaroslav@650
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if (type == Boolean.TYPE) {
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jaroslav@650
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sb.append('Z');
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jaroslav@650
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208 |
return;
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jaroslav@650
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}
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jaroslav@650
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210 |
if (type == Short.TYPE) {
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jaroslav@650
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sb.append('S');
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jaroslav@650
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212 |
return;
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jaroslav@650
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}
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jaroslav@650
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214 |
if (type == Void.TYPE) {
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jaroslav@650
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215 |
sb.append('V');
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jaroslav@650
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216 |
return;
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jaroslav@650
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217 |
}
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jaroslav@650
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218 |
if (type == Character.TYPE) {
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jaroslav@650
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219 |
sb.append('C');
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jaroslav@650
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220 |
return;
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jaroslav@650
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}
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jaroslav@650
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222 |
if (type.isArray()) {
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jaroslav@650
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sb.append("_3");
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jaroslav@650
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224 |
appendType(sb, type.getComponentType());
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jaroslav@650
|
225 |
return;
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jaroslav@650
|
226 |
}
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jaroslav@650
|
227 |
sb.append('L').append(type.getName().replace('.', '_'));
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jaroslav@650
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228 |
sb.append("_2");
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jaroslav@650
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229 |
}
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jaroslav@418
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230 |
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jaroslav@418
|
231 |
public static int signatureElements(String sig) {
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jaroslav@418
|
232 |
Enumeration<Class> en = signatureParser(sig);
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jaroslav@418
|
233 |
int cnt = 0;
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jaroslav@418
|
234 |
while (en.hasMoreElements()) {
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jaroslav@418
|
235 |
en.nextElement();
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jaroslav@418
|
236 |
cnt++;
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jaroslav@418
|
237 |
}
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jaroslav@418
|
238 |
return cnt;
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jaroslav@418
|
239 |
}
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jaroslav@391
|
240 |
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jaroslav@418
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241 |
public static Enumeration<Class> signatureParser(final String sig) {
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jaroslav@418
|
242 |
class E implements Enumeration<Class> {
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jaroslav@418
|
243 |
int pos;
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jaroslav@1586
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244 |
int len;
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jaroslav@1586
|
245 |
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jaroslav@1586
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246 |
E() {
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jaroslav@1586
|
247 |
len = sig.length();
|
jaroslav@1586
|
248 |
while (sig.charAt(len - 1) == '$') {
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jaroslav@1586
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249 |
len--;
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jaroslav@1586
|
250 |
}
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jaroslav@1586
|
251 |
}
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jaroslav@418
|
252 |
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jaroslav@418
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253 |
public boolean hasMoreElements() {
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jaroslav@1586
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254 |
return pos < len;
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jaroslav@418
|
255 |
}
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jaroslav@418
|
256 |
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jaroslav@418
|
257 |
public Class nextElement() {
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jaroslav@418
|
258 |
switch (sig.charAt(pos++)) {
|
jaroslav@418
|
259 |
case 'I':
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jaroslav@418
|
260 |
return Integer.TYPE;
|
jaroslav@418
|
261 |
case 'J':
|
jaroslav@418
|
262 |
return Long.TYPE;
|
jaroslav@418
|
263 |
case 'D':
|
jaroslav@418
|
264 |
return Double.TYPE;
|
jaroslav@418
|
265 |
case 'F':
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jaroslav@418
|
266 |
return Float.TYPE;
|
jaroslav@418
|
267 |
case 'B':
|
jaroslav@418
|
268 |
return Byte.TYPE;
|
jaroslav@418
|
269 |
case 'Z':
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jaroslav@418
|
270 |
return Boolean.TYPE;
|
jaroslav@418
|
271 |
case 'S':
|
jaroslav@418
|
272 |
return Short.TYPE;
|
jaroslav@418
|
273 |
case 'V':
|
jaroslav@418
|
274 |
return Void.TYPE;
|
jaroslav@430
|
275 |
case 'C':
|
jaroslav@430
|
276 |
return Character.TYPE;
|
jaroslav@418
|
277 |
case 'L':
|
jaroslav@418
|
278 |
try {
|
jaroslav@650
|
279 |
int up = sig.indexOf("_2", pos);
|
jaroslav@650
|
280 |
String type = sig.substring(pos, up);
|
jaroslav@418
|
281 |
pos = up + 2;
|
jaroslav@650
|
282 |
return Class.forName(type.replace('_', '.'));
|
jaroslav@418
|
283 |
} catch (ClassNotFoundException ex) {
|
jaroslav@650
|
284 |
throw new IllegalStateException(ex);
|
jaroslav@418
|
285 |
}
|
jaroslav@650
|
286 |
case '_': {
|
jaroslav@650
|
287 |
char nch = sig.charAt(pos++);
|
jaroslav@650
|
288 |
assert nch == '3' : "Can't find '3' at " + sig.substring(pos - 1);
|
jaroslav@650
|
289 |
final Class compType = nextElement();
|
jaroslav@650
|
290 |
return Array.newInstance(compType, 0).getClass();
|
jaroslav@650
|
291 |
}
|
jaroslav@418
|
292 |
}
|
jaroslav@418
|
293 |
throw new UnsupportedOperationException(sig + " at " + pos);
|
jaroslav@418
|
294 |
}
|
jaroslav@418
|
295 |
}
|
jaroslav@418
|
296 |
return new E();
|
jaroslav@418
|
297 |
}
|
jaroslav@391
|
298 |
}
|