dew/src/main/java/org/apidesign/bck2brwsr/launcher/JSLauncher.java
branchdew
changeset 546 79e5a4aae48d
parent 545 29b8e1b87fad
child 547 36ec0a7616d0
     1.1 --- a/dew/src/main/java/org/apidesign/bck2brwsr/launcher/JSLauncher.java	Wed Jan 23 13:56:54 2013 +0100
     1.2 +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.3 @@ -1,126 +0,0 @@
     1.4 -/**
     1.5 - * Back 2 Browser Bytecode Translator
     1.6 - * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
     1.7 - *
     1.8 - * This program is free software: you can redistribute it and/or modify
     1.9 - * it under the terms of the GNU General Public License as published by
    1.10 - * the Free Software Foundation, version 2 of the License.
    1.11 - *
    1.12 - * This program is distributed in the hope that it will be useful,
    1.13 - * but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.14 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.15 - * GNU General Public License for more details.
    1.16 - *
    1.17 - * You should have received a copy of the GNU General Public License
    1.18 - * along with this program. Look for COPYING file in the top folder.
    1.19 - * If not, see http://opensource.org/licenses/GPL-2.0.
    1.20 - */
    1.21 -package org.apidesign.bck2brwsr.launcher;
    1.22 -
    1.23 -import java.io.IOException;
    1.24 -import java.io.InputStream;
    1.25 -import java.net.URL;
    1.26 -import java.util.Enumeration;
    1.27 -import java.util.LinkedHashSet;
    1.28 -import java.util.Set;
    1.29 -import java.util.logging.Logger;
    1.30 -import javax.script.Invocable;
    1.31 -import javax.script.ScriptEngine;
    1.32 -import javax.script.ScriptEngineManager;
    1.33 -import javax.script.ScriptException;
    1.34 -import org.apidesign.vm4brwsr.Bck2Brwsr;
    1.35 -
    1.36 -/**
    1.37 - * Tests execution in Java's internal scripting engine.
    1.38 - */
    1.39 -final class JSLauncher extends Launcher {
    1.40 -    private static final Logger LOG = Logger.getLogger(JSLauncher.class.getName());
    1.41 -    private Set<ClassLoader> loaders = new LinkedHashSet<>();
    1.42 -    private final Res resources = new Res();
    1.43 -    private Invocable code;
    1.44 -    private StringBuilder codeSeq;
    1.45 -    private Object console;
    1.46 -    
    1.47 -    
    1.48 -    @Override MethodInvocation addMethod(Class<?> clazz, String method, String html) {
    1.49 -        loaders.add(clazz.getClassLoader());
    1.50 -        MethodInvocation mi = new MethodInvocation(clazz.getName(), method, html);
    1.51 -        try {
    1.52 -            mi.result(code.invokeMethod(
    1.53 -                console,
    1.54 -                "invoke__Ljava_lang_String_2Ljava_lang_String_2Ljava_lang_String_2",
    1.55 -                mi.className, mi.methodName).toString(), null);
    1.56 -        } catch (ScriptException | NoSuchMethodException ex) {
    1.57 -            mi.result(null, ex);
    1.58 -        }
    1.59 -        return mi;
    1.60 -    }
    1.61 -    
    1.62 -    public void addClassLoader(ClassLoader url) {
    1.63 -        this.loaders.add(url);
    1.64 -    }
    1.65 -
    1.66 -    @Override
    1.67 -    public void initialize() throws IOException {
    1.68 -        try {
    1.69 -            initRhino();
    1.70 -        } catch (Exception ex) {
    1.71 -            if (ex instanceof IOException) {
    1.72 -                throw (IOException)ex;
    1.73 -            }
    1.74 -            if (ex instanceof RuntimeException) {
    1.75 -                throw (RuntimeException)ex;
    1.76 -            }
    1.77 -            throw new IOException(ex);
    1.78 -        }
    1.79 -    }
    1.80 -    
    1.81 -    private void initRhino() throws IOException, ScriptException, NoSuchMethodException {
    1.82 -        StringBuilder sb = new StringBuilder();
    1.83 -        Bck2Brwsr.generate(sb, new Res());
    1.84 -
    1.85 -        ScriptEngineManager sem = new ScriptEngineManager();
    1.86 -        ScriptEngine mach = sem.getEngineByExtension("js");
    1.87 -
    1.88 -        sb.append(
    1.89 -              "\nvar vm = new bck2brwsr(org.apidesign.bck2brwsr.launcher.Console.read);"
    1.90 -            + "\nfunction initVM() { return vm; };"
    1.91 -            + "\n");
    1.92 -
    1.93 -        Object res = mach.eval(sb.toString());
    1.94 -        if (!(mach instanceof Invocable)) {
    1.95 -            throw new IOException("It is invocable object: " + res);
    1.96 -        }
    1.97 -        code = (Invocable) mach;
    1.98 -        codeSeq = sb;
    1.99 -        
   1.100 -        Object vm = code.invokeFunction("initVM");
   1.101 -        console = code.invokeMethod(vm, "loadClass", Console.class.getName());
   1.102 -    }
   1.103 -
   1.104 -    @Override
   1.105 -    public void shutdown() throws IOException {
   1.106 -    }
   1.107 -
   1.108 -    @Override
   1.109 -    public String toString() {
   1.110 -        return codeSeq.toString();
   1.111 -    }
   1.112 -    
   1.113 -    private class Res implements Bck2Brwsr.Resources {
   1.114 -        @Override
   1.115 -        public InputStream get(String resource) throws IOException {
   1.116 -            for (ClassLoader l : loaders) {
   1.117 -                URL u = null;
   1.118 -                Enumeration<URL> en = l.getResources(resource);
   1.119 -                while (en.hasMoreElements()) {
   1.120 -                    u = en.nextElement();
   1.121 -                }
   1.122 -                if (u != null) {
   1.123 -                    return u.openStream();
   1.124 -                }
   1.125 -            }
   1.126 -            throw new IOException("Can't find " + resource);
   1.127 -        }
   1.128 -    }
   1.129 -}