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 public static boolean isInterface(String s) throws ClassNotFoundException {
42 return Class.forName(s).isInterface();
45 public static boolean equalsClassesOfExceptions() {
46 return MalformedURLException.class.getSuperclass() == IOException.class;
48 public static boolean differenceInClasses() {
49 Class<?> c1 = MalformedURLException.class;
50 Class<?> c2 = IOException.class;
54 public static String classForInstance() {
55 return new IOException().getClass().getName().toString();
58 @ClassesMarker(number = 1)
59 public static String name() {
60 return IOException.class.getName().toString();
62 public static String simpleName() {
63 return IOException.class.getSimpleName();
65 public static String canonicalName() {
66 return IOException.class.getCanonicalName();
68 public static boolean newInstance() throws Exception {
69 IOException ioe = IOException.class.newInstance();
70 if (ioe instanceof IOException) {
71 return ioe.getClass() == IOException.class;
73 throw new IllegalStateException("Not a subtype: " + ioe);
75 public static String newInstanceNoPubConstructor() throws Exception {
77 Float f = Float.class.newInstance();
78 return "wrong, can't instantiate: " + f;
79 } catch (Exception ex) {
80 return (ex.getClass().getName() + ":" + ex.getMessage()).toString().toString();
83 public static int getMarker() {
84 if (!Classes.class.isAnnotationPresent(ClassesMarker.class)) {
87 ClassesMarker cm = Classes.class.getAnnotation(ClassesMarker.class);
88 return cm == null ? -1 : cm.number();
90 public static String getNamer(boolean direct) {
92 ClassesNamer cm = Classes.class.getAnnotation(ClassesNamer.class);
93 return cm == null ? null : cm.name();
95 for (Annotation a : Classes.class.getAnnotations()) {
96 if (a instanceof ClassesNamer) {
97 return ((ClassesNamer)a).name();
103 public static String intType() {
104 return Integer.TYPE.getName();
107 public static int primitive() {
110 public static boolean primitiveB() {
114 public static String primitiveType(String method) throws Exception {
115 return reflectiveMethodCall(false, method).getClass().getName();
118 @JavaScriptBody(args = "msg", body = "throw msg;")
119 private static native void thrw(String msg);
121 public static Object reflectiveMethodCall(boolean direct, String mn) throws Exception {
123 StringBuilder sb = new StringBuilder();
125 final Class<? extends Annotation> v = ClassesMarker.class;
126 for (Method m : Classes.class.getMethods()) {
127 sb.append("\n").append(m.getName());
129 if (m.getName().equals(mn)) {
134 if (m.getAnnotation(v) != null) {
141 find = Classes.class.getMethod(mn);
145 throw new NullPointerException(sb.toString());
147 return find.invoke(null);
150 public static int reflectiveSum(int a, int b) throws Exception {
151 Method m = StaticMethod.class.getMethod("sum", int.class, int.class);
152 return (int) m.invoke(null, a, b);