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jaroslav@123
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/**
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jaroslav@123
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* HTML via Java(tm) Language Bindings
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jaroslav@123
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* Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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jaroslav@123
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*
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jaroslav@123
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* This program is free software: you can redistribute it and/or modify
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jaroslav@123
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* it under the terms of the GNU General Public License as published by
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jaroslav@123
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* the Free Software Foundation, version 2 of the License.
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jaroslav@123
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*
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jaroslav@123
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* This program is distributed in the hope that it will be useful,
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jaroslav@123
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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jaroslav@123
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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jaroslav@123
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* GNU General Public License for more details. apidesign.org
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jaroslav@123
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* designates this particular file as subject to the
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jaroslav@123
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* "Classpath" exception as provided by apidesign.org
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jaroslav@123
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* in the License file that accompanied this code.
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jaroslav@123
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*
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jaroslav@123
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* You should have received a copy of the GNU General Public License
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jaroslav@123
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* along with this program. Look for COPYING file in the top folder.
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jaroslav@123
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* If not, see http://wiki.apidesign.org/wiki/GPLwithClassPathException
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jaroslav@123
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*/
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jaroslav@123
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package org.apidesign.html.boot.impl;
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jaroslav@123
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jaroslav@123
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import org.apidesign.html.boot.spi.Fn;
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jaroslav@123
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import java.io.IOException;
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jaroslav@123
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import java.io.InputStream;
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jaroslav@123
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import java.net.URL;
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jaroslav@123
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import java.util.ArrayList;
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jaroslav@123
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import java.util.Enumeration;
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jaroslav@123
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import java.util.List;
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jaroslav@123
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import org.objectweb.asm.AnnotationVisitor;
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jaroslav@123
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import org.objectweb.asm.ClassReader;
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jaroslav@123
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import org.objectweb.asm.ClassVisitor;
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import org.objectweb.asm.ClassWriter;
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import org.objectweb.asm.Label;
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jaroslav@123
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import org.objectweb.asm.MethodVisitor;
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jaroslav@123
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import org.objectweb.asm.Opcodes;
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jaroslav@123
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import org.objectweb.asm.Type;
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import org.objectweb.asm.signature.SignatureReader;
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import org.objectweb.asm.signature.SignatureVisitor;
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jaroslav@123
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/**
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jaroslav@123
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*
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jaroslav@123
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* @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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jaroslav@123
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*/
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jaroslav@123
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abstract class JsClassLoader extends ClassLoader {
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jaroslav@123
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JsClassLoader(ClassLoader parent) {
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jaroslav@123
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super(parent);
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jaroslav@123
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}
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jaroslav@123
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@Override
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jaroslav@123
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protected abstract URL findResource(String name);
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jaroslav@123
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@Override
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jaroslav@123
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protected abstract Enumeration<URL> findResources(String name);
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jaroslav@123
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jaroslav@123
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@Override
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jaroslav@123
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protected Class<?> findClass(String name) throws ClassNotFoundException {
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jaroslav@123
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if (name.startsWith("javafx")) {
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jaroslav@123
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return Class.forName(name);
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jaroslav@123
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}
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jaroslav@123
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if (name.startsWith("netscape")) {
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jaroslav@123
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return Class.forName(name);
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jaroslav@123
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}
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jaroslav@123
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if (name.startsWith("com.sun")) {
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jaroslav@123
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return Class.forName(name);
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jaroslav@123
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}
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jaroslav@123
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if (name.equals(JsClassLoader.class.getName())) {
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jaroslav@123
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return JsClassLoader.class;
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jaroslav@123
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}
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jaroslav@123
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if (name.equals(Fn.class.getName())) {
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jaroslav@123
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return Fn.class;
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jaroslav@123
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}
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jaroslav@124
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if (name.equals(FnUtils.class.getName())) {
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jaroslav@124
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return FnUtils.class;
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jaroslav@124
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}
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jaroslav@123
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URL u = findResource(name.replace('.', '/') + ".class");
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jaroslav@123
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if (u != null) {
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jaroslav@123
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InputStream is = null;
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jaroslav@123
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try {
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is = u.openStream();
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byte[] arr = new byte[is.available()];
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jaroslav@123
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int len = 0;
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jaroslav@123
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while (len < arr.length) {
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jaroslav@123
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int read = is.read(arr, len, arr.length - len);
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jaroslav@123
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if (read == -1) {
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jaroslav@123
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throw new IOException("Can't read " + u);
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jaroslav@123
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}
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len += read;
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jaroslav@123
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}
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is.close();
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is = null;
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ClassReader cr = new ClassReader(arr);
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FindInClass tst = new FindInClass(null);
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cr.accept(tst, 0);
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jaroslav@123
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if (tst.found > 0) {
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ClassWriter w = new ClassWriterEx(cr, ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
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FindInClass fic = new FindInClass(w);
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cr.accept(fic, 0);
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arr = w.toByteArray();
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jaroslav@123
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}
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jaroslav@123
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if (arr != null) {
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jaroslav@123
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return defineClass(name, arr, 0, arr.length);
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jaroslav@123
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}
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jaroslav@123
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} catch (IOException ex) {
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jaroslav@123
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throw new ClassNotFoundException("Can't load " + name, ex);
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jaroslav@123
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} finally {
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jaroslav@123
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try {
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jaroslav@123
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if (is != null) is.close();
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jaroslav@123
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} catch (IOException ex) {
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jaroslav@123
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throw new ClassNotFoundException(null, ex);
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jaroslav@123
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}
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jaroslav@123
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}
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jaroslav@123
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}
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jaroslav@124
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if (
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name.equals("org.apidesign.html.boot.spi.Fn") ||
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jaroslav@124
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name.equals("org.apidesign.html.boot.impl.FnUtils")
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jaroslav@124
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) {
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jaroslav@123
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return Class.forName(name);
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jaroslav@123
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}
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jaroslav@123
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jaroslav@123
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return super.findClass(name);
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jaroslav@123
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}
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jaroslav@123
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jaroslav@123
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protected abstract Fn defineFn(String code, String... names);
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jaroslav@123
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jaroslav@123
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jaroslav@123
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private static final class FindInClass extends ClassVisitor {
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jaroslav@123
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private String name;
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jaroslav@123
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private int found;
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jaroslav@123
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jaroslav@123
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public FindInClass(ClassVisitor cv) {
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jaroslav@123
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super(Opcodes.ASM4, cv);
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jaroslav@123
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}
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jaroslav@123
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jaroslav@123
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@Override
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jaroslav@123
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public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
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jaroslav@123
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this.name = name;
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jaroslav@123
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super.visit(version, access, name, signature, superName, interfaces);
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jaroslav@123
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}
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jaroslav@123
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jaroslav@123
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jaroslav@123
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jaroslav@123
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@Override
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jaroslav@123
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public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
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jaroslav@123
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return new FindInMethod(access, name, desc,
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jaroslav@123
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super.visitMethod(access & (~Opcodes.ACC_NATIVE), name, desc, signature, exceptions)
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jaroslav@123
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);
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jaroslav@123
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}
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jaroslav@123
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jaroslav@123
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private final class FindInMethod extends MethodVisitor {
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jaroslav@123
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private final String name;
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jaroslav@123
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private final String desc;
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jaroslav@123
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private final int access;
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jaroslav@123
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private List<String> args;
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jaroslav@123
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private String body;
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jaroslav@123
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private boolean bodyGenerated;
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jaroslav@123
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jaroslav@123
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public FindInMethod(int access, String name, String desc, MethodVisitor mv) {
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jaroslav@123
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super(Opcodes.ASM4, mv);
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jaroslav@123
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this.access = access;
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jaroslav@123
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this.name = name;
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jaroslav@123
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this.desc = desc;
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jaroslav@123
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}
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jaroslav@123
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jaroslav@123
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@Override
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jaroslav@123
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public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
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jaroslav@123
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if ("Lnet/java/html/js/JavaScriptBody;".equals(desc)) { // NOI18N
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jaroslav@123
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found++;
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jaroslav@123
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return new FindInAnno();
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jaroslav@123
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}
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jaroslav@123
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return super.visitAnnotation(desc, visible);
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jaroslav@123
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}
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jaroslav@123
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jaroslav@123
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private void generateJSBody(List<String> args, String body) {
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jaroslav@123
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this.args = args;
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jaroslav@123
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this.body = body;
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jaroslav@123
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}
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jaroslav@123
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jaroslav@123
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@Override
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jaroslav@123
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public void visitCode() {
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jaroslav@123
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if (body == null) {
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jaroslav@123
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return;
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jaroslav@123
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}
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jaroslav@123
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generateBody();
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jaroslav@123
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}
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jaroslav@123
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jaroslav@123
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private boolean generateBody() {
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jaroslav@123
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if (bodyGenerated) {
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jaroslav@123
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return false;
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jaroslav@123
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}
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jaroslav@123
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bodyGenerated = true;
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jaroslav@123
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jaroslav@123
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super.visitFieldInsn(
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jaroslav@123
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Opcodes.GETSTATIC, FindInClass.this.name,
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jaroslav@123
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"$$fn$$" + name + "_" + found,
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jaroslav@123
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"Lorg/apidesign/html/boot/spi/Fn;"
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jaroslav@123
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);
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jaroslav@123
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super.visitInsn(Opcodes.DUP);
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jaroslav@123
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Label ifNotNull = new Label();
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jaroslav@123
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super.visitJumpInsn(Opcodes.IFNONNULL, ifNotNull);
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jaroslav@123
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jaroslav@123
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// init Fn
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jaroslav@123
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super.visitInsn(Opcodes.POP);
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jaroslav@123
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super.visitLdcInsn(Type.getObjectType(FindInClass.this.name));
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jaroslav@123
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super.visitLdcInsn(body);
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jaroslav@123
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super.visitIntInsn(Opcodes.SIPUSH, args.size());
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jaroslav@123
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super.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/String");
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jaroslav@123
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for (int i = 0; i < args.size(); i++) {
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jaroslav@123
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String name = args.get(i);
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jaroslav@123
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super.visitInsn(Opcodes.DUP);
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jaroslav@123
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super.visitIntInsn(Opcodes.BIPUSH, i);
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jaroslav@123
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super.visitLdcInsn(name);
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jaroslav@123
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super.visitInsn(Opcodes.AASTORE);
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jaroslav@123
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214 |
}
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jaroslav@123
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super.visitMethodInsn(Opcodes.INVOKESTATIC,
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jaroslav@124
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"org/apidesign/html/boot/impl/FnUtils", "define",
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jaroslav@123
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217 |
"(Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/String;)Lorg/apidesign/html/boot/spi/Fn;"
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jaroslav@123
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218 |
);
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jaroslav@123
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// end of Fn init
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jaroslav@123
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jaroslav@123
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super.visitLabel(ifNotNull);
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jaroslav@123
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222 |
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jaroslav@123
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223 |
final int offset;
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jaroslav@123
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224 |
if ((access & Opcodes.ACC_STATIC) == 0) {
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jaroslav@123
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225 |
offset = 1;
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jaroslav@123
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226 |
super.visitIntInsn(Opcodes.ALOAD, 0);
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jaroslav@123
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227 |
} else {
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jaroslav@123
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228 |
offset = 0;
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jaroslav@123
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229 |
super.visitInsn(Opcodes.ACONST_NULL);
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jaroslav@123
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230 |
}
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jaroslav@123
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231 |
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jaroslav@123
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232 |
super.visitIntInsn(Opcodes.SIPUSH, args.size());
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jaroslav@123
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233 |
super.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/Object");
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jaroslav@123
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234 |
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jaroslav@123
|
235 |
class SV extends SignatureVisitor {
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jaroslav@123
|
236 |
private boolean nowReturn;
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jaroslav@123
|
237 |
private Type returnType;
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jaroslav@123
|
238 |
private int index;
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jaroslav@123
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239 |
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jaroslav@123
|
240 |
public SV() {
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jaroslav@123
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241 |
super(Opcodes.ASM4);
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jaroslav@123
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242 |
}
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jaroslav@123
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243 |
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jaroslav@123
|
244 |
@Override
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jaroslav@123
|
245 |
public void visitBaseType(char descriptor) {
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jaroslav@123
|
246 |
final Type t = Type.getType("" + descriptor);
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jaroslav@123
|
247 |
if (nowReturn) {
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jaroslav@123
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248 |
returnType = t;
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jaroslav@123
|
249 |
return;
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jaroslav@123
|
250 |
}
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jaroslav@123
|
251 |
FindInMethod.super.visitInsn(Opcodes.DUP);
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jaroslav@123
|
252 |
FindInMethod.super.visitIntInsn(Opcodes.SIPUSH, index);
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jaroslav@123
|
253 |
FindInMethod.super.visitVarInsn(t.getOpcode(Opcodes.ILOAD), index + offset);
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jaroslav@123
|
254 |
String factory;
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jaroslav@123
|
255 |
switch (descriptor) {
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jaroslav@123
|
256 |
case 'I': factory = "java/lang/Integer"; break;
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jaroslav@123
|
257 |
case 'J': factory = "java/lang/Long"; break;
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jaroslav@123
|
258 |
case 'S': factory = "java/lang/Short"; break;
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jaroslav@123
|
259 |
case 'F': factory = "java/lang/Float"; break;
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jaroslav@123
|
260 |
case 'D': factory = "java/lang/Double"; break;
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jaroslav@123
|
261 |
case 'Z': factory = "java/lang/Boolean"; break;
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jaroslav@123
|
262 |
case 'C': factory = "java/lang/Character"; break;
|
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jaroslav@123
|
263 |
case 'B': factory = "java/lang/Byte"; break;
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jaroslav@123
|
264 |
default: throw new IllegalStateException(t.toString());
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jaroslav@123
|
265 |
}
|
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jaroslav@123
|
266 |
FindInMethod.super.visitMethodInsn(Opcodes.INVOKESTATIC,
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jaroslav@123
|
267 |
factory, "valueOf", "(" + descriptor + ")L" + factory + ";"
|
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jaroslav@123
|
268 |
);
|
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jaroslav@123
|
269 |
FindInMethod.super.visitInsn(Opcodes.AASTORE);
|
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jaroslav@123
|
270 |
index++;
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jaroslav@123
|
271 |
}
|
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jaroslav@123
|
272 |
|
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jaroslav@123
|
273 |
@Override
|
|
jaroslav@123
|
274 |
public void visitClassType(String name) {
|
|
jaroslav@123
|
275 |
if (nowReturn) {
|
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jaroslav@123
|
276 |
returnType = Type.getObjectType(name);
|
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jaroslav@123
|
277 |
return;
|
|
jaroslav@123
|
278 |
}
|
|
jaroslav@123
|
279 |
FindInMethod.super.visitInsn(Opcodes.DUP);
|
|
jaroslav@123
|
280 |
FindInMethod.super.visitIntInsn(Opcodes.SIPUSH, index);
|
|
jaroslav@123
|
281 |
FindInMethod.super.visitVarInsn(Opcodes.ALOAD, index + offset);
|
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jaroslav@123
|
282 |
FindInMethod.super.visitInsn(Opcodes.AASTORE);
|
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jaroslav@123
|
283 |
index++;
|
|
jaroslav@123
|
284 |
}
|
|
jaroslav@123
|
285 |
|
|
jaroslav@123
|
286 |
@Override
|
|
jaroslav@123
|
287 |
public SignatureVisitor visitReturnType() {
|
|
jaroslav@123
|
288 |
nowReturn = true;
|
|
jaroslav@123
|
289 |
return this;
|
|
jaroslav@123
|
290 |
}
|
|
jaroslav@123
|
291 |
|
|
jaroslav@123
|
292 |
|
|
jaroslav@123
|
293 |
}
|
|
jaroslav@123
|
294 |
SV sv = new SV();
|
|
jaroslav@123
|
295 |
SignatureReader sr = new SignatureReader(desc);
|
|
jaroslav@123
|
296 |
sr.accept(sv);
|
|
jaroslav@123
|
297 |
|
|
jaroslav@123
|
298 |
super.visitMethodInsn(Opcodes.INVOKEVIRTUAL,
|
|
jaroslav@123
|
299 |
"org/apidesign/html/boot/spi/Fn", "invoke", "(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;"
|
|
jaroslav@123
|
300 |
);
|
|
jaroslav@123
|
301 |
switch (sv.returnType.getSort()) {
|
|
jaroslav@123
|
302 |
case Type.VOID:
|
|
jaroslav@123
|
303 |
super.visitInsn(Opcodes.RETURN);
|
|
jaroslav@123
|
304 |
break;
|
|
jaroslav@123
|
305 |
case Type.ARRAY:
|
|
jaroslav@123
|
306 |
case Type.OBJECT:
|
|
jaroslav@123
|
307 |
super.visitTypeInsn(Opcodes.CHECKCAST, sv.returnType.getInternalName());
|
|
jaroslav@123
|
308 |
super.visitInsn(Opcodes.ARETURN);
|
|
jaroslav@123
|
309 |
break;
|
|
jaroslav@123
|
310 |
default:
|
|
jaroslav@123
|
311 |
super.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Number");
|
|
jaroslav@123
|
312 |
super.visitMethodInsn(Opcodes.INVOKEVIRTUAL,
|
|
jaroslav@123
|
313 |
"java/lang/Number", sv.returnType.getClassName() + "Value", "()" + sv.returnType.getDescriptor()
|
|
jaroslav@123
|
314 |
);
|
|
jaroslav@123
|
315 |
super.visitInsn(sv.returnType.getOpcode(Opcodes.IRETURN));
|
|
jaroslav@123
|
316 |
}
|
|
jaroslav@123
|
317 |
return true;
|
|
jaroslav@123
|
318 |
}
|
|
jaroslav@123
|
319 |
|
|
jaroslav@123
|
320 |
@Override
|
|
jaroslav@123
|
321 |
public void visitEnd() {
|
|
jaroslav@123
|
322 |
super.visitEnd();
|
|
jaroslav@123
|
323 |
if (body != null) {
|
|
jaroslav@123
|
324 |
if (generateBody()) {
|
|
jaroslav@123
|
325 |
// native method
|
|
jaroslav@123
|
326 |
super.visitMaxs(1, 0);
|
|
jaroslav@123
|
327 |
}
|
|
jaroslav@123
|
328 |
FindInClass.this.visitField(
|
|
jaroslav@123
|
329 |
Opcodes.ACC_PRIVATE | Opcodes.ACC_STATIC,
|
|
jaroslav@123
|
330 |
"$$fn$$" + name + "_" + found,
|
|
jaroslav@123
|
331 |
"Lorg/apidesign/html/boot/spi/Fn;",
|
|
jaroslav@123
|
332 |
null, null
|
|
jaroslav@123
|
333 |
);
|
|
jaroslav@123
|
334 |
}
|
|
jaroslav@123
|
335 |
}
|
|
jaroslav@123
|
336 |
|
|
jaroslav@123
|
337 |
|
|
jaroslav@123
|
338 |
|
|
jaroslav@123
|
339 |
|
|
jaroslav@123
|
340 |
|
|
jaroslav@123
|
341 |
private final class FindInAnno extends AnnotationVisitor {
|
|
jaroslav@123
|
342 |
private List<String> args = new ArrayList<String>();
|
|
jaroslav@123
|
343 |
private String body;
|
|
jaroslav@123
|
344 |
|
|
jaroslav@123
|
345 |
public FindInAnno() {
|
|
jaroslav@123
|
346 |
super(Opcodes.ASM4);
|
|
jaroslav@123
|
347 |
}
|
|
jaroslav@123
|
348 |
|
|
jaroslav@123
|
349 |
@Override
|
|
jaroslav@123
|
350 |
public void visit(String name, Object value) {
|
|
jaroslav@123
|
351 |
if (name == null) {
|
|
jaroslav@123
|
352 |
args.add((String) value);
|
|
jaroslav@123
|
353 |
return;
|
|
jaroslav@123
|
354 |
}
|
|
jaroslav@123
|
355 |
assert name.equals("body");
|
|
jaroslav@123
|
356 |
body = (String) value;
|
|
jaroslav@123
|
357 |
}
|
|
jaroslav@123
|
358 |
|
|
jaroslav@123
|
359 |
@Override
|
|
jaroslav@123
|
360 |
public AnnotationVisitor visitArray(String name) {
|
|
jaroslav@123
|
361 |
return this;
|
|
jaroslav@123
|
362 |
}
|
|
jaroslav@123
|
363 |
|
|
jaroslav@123
|
364 |
@Override
|
|
jaroslav@123
|
365 |
public void visitEnd() {
|
|
jaroslav@123
|
366 |
if (body != null) {
|
|
jaroslav@123
|
367 |
generateJSBody(args, body);
|
|
jaroslav@123
|
368 |
}
|
|
jaroslav@123
|
369 |
}
|
|
jaroslav@123
|
370 |
}
|
|
jaroslav@123
|
371 |
}
|
|
jaroslav@123
|
372 |
}
|
|
jaroslav@123
|
373 |
|
|
jaroslav@123
|
374 |
private class ClassWriterEx extends ClassWriter {
|
|
jaroslav@123
|
375 |
|
|
jaroslav@123
|
376 |
public ClassWriterEx(ClassReader classReader, int flags) {
|
|
jaroslav@123
|
377 |
super(classReader, flags);
|
|
jaroslav@123
|
378 |
}
|
|
jaroslav@123
|
379 |
|
|
jaroslav@123
|
380 |
@Override
|
|
jaroslav@123
|
381 |
protected String getCommonSuperClass(final String type1, final String type2) {
|
|
jaroslav@123
|
382 |
Class<?> c, d;
|
|
jaroslav@123
|
383 |
ClassLoader classLoader = JsClassLoader.this;
|
|
jaroslav@123
|
384 |
try {
|
|
jaroslav@123
|
385 |
c = Class.forName(type1.replace('/', '.'), false, classLoader);
|
|
jaroslav@123
|
386 |
d = Class.forName(type2.replace('/', '.'), false, classLoader);
|
|
jaroslav@123
|
387 |
} catch (Exception e) {
|
|
jaroslav@123
|
388 |
throw new RuntimeException(e.toString());
|
|
jaroslav@123
|
389 |
}
|
|
jaroslav@123
|
390 |
if (c.isAssignableFrom(d)) {
|
|
jaroslav@123
|
391 |
return type1;
|
|
jaroslav@123
|
392 |
}
|
|
jaroslav@123
|
393 |
if (d.isAssignableFrom(c)) {
|
|
jaroslav@123
|
394 |
return type2;
|
|
jaroslav@123
|
395 |
}
|
|
jaroslav@123
|
396 |
if (c.isInterface() || d.isInterface()) {
|
|
jaroslav@123
|
397 |
return "java/lang/Object";
|
|
jaroslav@123
|
398 |
} else {
|
|
jaroslav@123
|
399 |
do {
|
|
jaroslav@123
|
400 |
c = c.getSuperclass();
|
|
jaroslav@123
|
401 |
} while (!c.isAssignableFrom(d));
|
|
jaroslav@123
|
402 |
return c.getName().replace('.', '/');
|
|
jaroslav@123
|
403 |
}
|
|
jaroslav@123
|
404 |
}
|
|
jaroslav@123
|
405 |
}
|
|
jaroslav@123
|
406 |
}
|