2 * Back 2 Browser Bytecode Translator
3 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. Look for COPYING file in the top folder.
16 * If not, see http://opensource.org/licenses/GPL-2.0.
18 package org.apidesign.vm4brwsr;
20 import java.io.IOException;
21 import java.lang.annotation.Annotation;
22 import java.lang.reflect.Method;
23 import java.net.MalformedURLException;
24 import org.apidesign.bck2brwsr.core.JavaScriptBody;
28 * @author Jaroslav Tulach <jtulach@netbeans.org>
30 @ClassesMarker(number = 10)
31 @ClassesNamer(name = "my text")
32 public class Classes {
33 public static String nameOfIO() {
34 return nameFor(IOException.class);
37 private static String nameFor(Class<?> c) {
41 private static final Class<?> PRELOAD = Runnable.class;
43 public static boolean isInterface(String s) throws ClassNotFoundException {
44 return Class.forName(s).isInterface();
47 public static boolean equalsClassesOfExceptions() {
48 return MalformedURLException.class.getSuperclass() == IOException.class;
50 public static boolean differenceInClasses() {
51 Class<?> c1 = MalformedURLException.class;
52 Class<?> c2 = IOException.class;
56 public static String classForInstance() {
57 return new IOException().getClass().getName().toString();
60 @ClassesMarker(number = 1)
61 public static String name() {
62 return IOException.class.getName().toString();
64 public static String simpleName() {
65 return IOException.class.getSimpleName();
67 public static String canonicalName() {
68 return IOException.class.getCanonicalName();
70 public static boolean newInstance() throws Exception {
71 IOException ioe = IOException.class.newInstance();
72 if (ioe instanceof IOException) {
73 return ioe.getClass() == IOException.class;
75 throw new IllegalStateException("Not a subtype: " + ioe);
77 public static String newInstanceNoPubConstructor() throws Exception {
79 Float f = Float.class.newInstance();
80 return "wrong, can't instantiate: " + f;
81 } catch (Exception ex) {
82 return (ex.getClass().getName() + ":" + ex.getMessage()).toString().toString();
85 public static int getMarker() {
86 if (!Classes.class.isAnnotationPresent(ClassesMarker.class)) {
89 ClassesMarker cm = Classes.class.getAnnotation(ClassesMarker.class);
90 return cm == null ? -1 : cm.number();
92 public static String getNamer(boolean direct) {
94 ClassesNamer cm = Classes.class.getAnnotation(ClassesNamer.class);
95 return cm == null ? null : cm.name();
97 for (Annotation a : Classes.class.getAnnotations()) {
98 if (a instanceof ClassesNamer) {
99 return ((ClassesNamer)a).name();
105 public static String intType() {
106 return Integer.TYPE.getName();
109 public static int primitive() {
112 public static boolean primitiveB() {
116 public static String primitiveType(String method) throws Exception {
117 return reflectiveMethodCall(false, method).getClass().getName();
120 @JavaScriptBody(args = "msg", body = "throw msg;")
121 private static native void thrw(String msg);
123 public static Object reflectiveMethodCall(boolean direct, String mn) throws Exception {
125 StringBuilder sb = new StringBuilder();
127 final Class<? extends Annotation> v = ClassesMarker.class;
128 for (Method m : Classes.class.getMethods()) {
129 sb.append("\n").append(m.getName());
131 if (m.getName().equals(mn)) {
136 if (m.getAnnotation(v) != null) {
143 find = Classes.class.getMethod(mn);
147 throw new NullPointerException(sb.toString());
149 return find.invoke(null);
152 public static int reflectiveSum(int a, int b) throws Exception {
153 Method m = StaticMethod.class.getMethod("sum", int.class, int.class);
154 return (int) m.invoke(null, a, b);