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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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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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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19 * If not, see http://wiki.apidesign.org/wiki/GPLwithClassPathException
22 package org.apidesign.html.boot.impl;
24 import java.io.Closeable;
25 import java.io.Reader;
27 import java.net.URLClassLoader;
28 import java.util.ArrayList;
29 import java.util.Arrays;
30 import java.util.Collection;
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.apidesign.html.boot.spi.Fn;
37 import org.testng.annotations.BeforeClass;
38 import org.testng.annotations.BeforeMethod;
42 * @author Jaroslav Tulach <jtulach@netbeans.org>
44 public class FnTest extends JsClassLoaderBase {
45 private static Fn.Presenter presenter;
51 public static void createClassLoader() throws Exception {
52 ScriptEngineManager sem = new ScriptEngineManager();
53 final ScriptEngine eng = sem.getEngineByMimeType("text/javascript");
55 final URL my = FnTest.class.getProtectionDomain().getCodeSource().getLocation();
56 ClassLoader parent = JsClassLoaderTest.class.getClassLoader().getParent();
57 final URLClassLoader ul = new URLClassLoader(new URL[] { my }, parent);
59 class Impl implements FindResources, Fn.Presenter {
61 public void findResources(String path, Collection<? super URL> results, boolean oneIsEnough) {
62 URL u = ul.findResource(path);
69 public Fn defineFn(String code, String... names) {
70 StringBuilder sb = new StringBuilder();
71 sb.append("(function() {");
72 sb.append("return function(");
74 for (String n : names) {
84 final Object val = eng.eval(sb.toString());
87 public Object invoke(Object thiz, Object... args) throws Exception {
88 List<Object> all = new ArrayList<Object>(args.length + 1);
89 all.add(thiz == null ? val : thiz);
90 all.addAll(Arrays.asList(args));
91 Invocable inv = (Invocable)eng;
93 Object ret = inv.invokeMethod(val, "call", all.toArray());
94 return val.equals(ret) ? null : ret;
95 } catch (ScriptException ex) {
100 } catch (ScriptException ex) {
101 throw new LinkageError("Can't parse: " + sb, ex);
106 public void displayPage(URL resource, Runnable r) {
107 throw new UnsupportedOperationException();
111 public void loadScript(Reader code) throws Exception {
115 Impl impl = new Impl();
116 ClassLoader loader = FnUtils.newLoader(impl, impl, parent);
119 Closeable close = FnContext.activate(impl);
120 methodClass = loader.loadClass(JsMethods.class.getName());
124 @BeforeMethod public void initPresenter() {
125 FnContext.currentPresenter(presenter);