Introducing Agent-Class to allow java.lang.instrument-like transforms of the @JavaScriptBody annotation
2 * HTML via Java(tm) Language Bindings
3 * Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, version 2 of the License.
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13 * designates this particular file as subject to the
14 * "Classpath" exception as provided by apidesign.org
15 * in the License file that accompanied this code.
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21 package org.apidesign.html.boot.impl;
23 import java.io.Closeable;
24 import java.io.Reader;
25 import org.apidesign.html.boot.spi.Fn;
27 import java.net.URLClassLoader;
28 import java.util.ArrayList;
29 import java.util.Arrays;
30 import java.util.Enumeration;
31 import java.util.List;
32 import javax.script.Invocable;
33 import javax.script.ScriptEngine;
34 import javax.script.ScriptEngineManager;
35 import javax.script.ScriptException;
36 import org.testng.annotations.AfterClass;
37 import org.testng.annotations.BeforeClass;
38 import org.testng.annotations.BeforeMethod;
42 * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
44 public class JsClassLoaderTest extends JsClassLoaderBase{
45 private static Fn.Presenter loader;
48 public static void setUpClass() throws Exception {
49 ScriptEngineManager sem = new ScriptEngineManager();
50 final ScriptEngine eng = sem.getEngineByMimeType("text/javascript");
52 final URL my = JsClassLoaderTest.class.getProtectionDomain().getCodeSource().getLocation();
53 ClassLoader parent = JsClassLoaderTest.class.getClassLoader().getParent();
54 final URLClassLoader ul = new URLClassLoader(new URL[] { my }, parent);
55 class MyCL extends JsClassLoader implements Fn.Presenter {
57 public MyCL(ClassLoader parent) {
62 protected URL findResource(String name) {
63 return ul.getResource(name);
66 public Fn defineFn(String code, String... names) {
67 StringBuilder sb = new StringBuilder();
68 sb.append("(function() {");
69 sb.append("return function(");
71 for (String n : names) {
81 final Object val = eng.eval(sb.toString());
84 public Object invoke(Object thiz, Object... args) throws Exception {
85 List<Object> all = new ArrayList<Object>(args.length + 1);
86 all.add(thiz == null ? val : thiz);
87 all.addAll(Arrays.asList(args));
88 Invocable inv = (Invocable)eng;
90 Object ret = inv.invokeMethod(val, "call", all.toArray());
91 return val.equals(ret) ? null : ret;
92 } catch (Exception ex) {
97 } catch (ScriptException ex) {
98 throw new LinkageError("Can't parse: " + sb, ex);
103 protected Enumeration<URL> findResources(String name) {
104 throw new UnsupportedOperationException();
108 public void loadScript(Reader code) throws ScriptException {
113 public void displayPage(URL page, Runnable onPageLoad) {
114 throw new UnsupportedOperationException();
118 MyCL l = new MyCL(parent);
119 Closeable close = FnContext.activate(l);
120 methodClass = l.loadClass(JsMethods.class.getName());
125 @BeforeMethod public void initPresenter() {
126 FnContext.currentPresenter(loader);
130 public static void cleanUp() {