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/**
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* HTML via Java(tm) Language Bindings
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* Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details. apidesign.org
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* designates this particular file as subject to the
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* "Classpath" exception as provided by apidesign.org
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* in the License file that accompanied this code.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. Look for COPYING file in the top folder.
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* If not, see http://wiki.apidesign.org/wiki/GPLwithClassPathException
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*/
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package org.apidesign.html.boot.impl;
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import java.io.Closeable;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.Reader;
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import java.net.URL;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Enumeration;
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import java.util.List;
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import java.util.concurrent.Callable;
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import org.apidesign.html.boot.spi.Fn;
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import org.objectweb.asm.AnnotationVisitor;
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import org.objectweb.asm.ClassReader;
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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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import org.objectweb.asm.MethodVisitor;
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import org.objectweb.asm.Opcodes;
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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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import org.objectweb.asm.signature.SignatureWriter;
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/**
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*
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* @author Jaroslav Tulach <jtulach@netbeans.org>
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*/
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public final class FnUtils implements Fn.Presenter {
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private FnUtils() {
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}
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public static boolean isJavaScriptCapable(ClassLoader l) {
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if (l instanceof JsClassLoader) {
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return true;
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}
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Class<?> clazz;
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try (Closeable c = Fn.activate(new FnUtils())) {
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clazz = Class.forName(Test.class.getName(), true, l);
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final Object is = ((Callable<?>)clazz.newInstance()).call();
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return Boolean.TRUE.equals(is);
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} catch (Exception ex) {
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return false;
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}
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}
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public static boolean isValid(Fn fn) {
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return fn != null && fn.isValid();
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}
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public static ClassLoader newLoader(final FindResources f, final Fn.Presenter d, ClassLoader parent) {
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return new JsClassLoader(parent) {
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@Override
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protected URL findResource(String name) {
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List<URL> l = res(name, true);
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return l.isEmpty() ? null : l.get(0);
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}
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@Override
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protected Enumeration<URL> findResources(String name) {
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return Collections.enumeration(res(name, false));
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}
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private List<URL> res(String name, boolean oneIsEnough) {
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List<URL> l = new ArrayList<URL>();
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f.findResources(name, l, oneIsEnough);
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return l;
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}
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@Override
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protected Fn defineFn(String code, String... names) {
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return d.defineFn(code, names);
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}
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@Override
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protected void loadScript(Reader code) throws Exception {
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d.loadScript(code);
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}
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};
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}
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static String callback(final String body) {
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return new JsCallback() {
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@Override
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protected CharSequence callMethod(
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String ident, String fqn, String method, String params
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) {
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StringBuilder sb = new StringBuilder();
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sb.append("vm.").append(mangle(fqn, method, params));
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sb.append("(");
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if (ident != null) {
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sb.append(ident);
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}
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return sb;
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}
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}.parse(body);
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}
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static void loadScript(ClassLoader jcl, String resource) {
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final InputStream script = jcl.getResourceAsStream(resource);
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if (script == null) {
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throw new NullPointerException("Can't find " + resource);
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}
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try {
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Reader isr = null;
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try {
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isr = new InputStreamReader(script, "UTF-8");
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FnContext.currentPresenter().loadScript(isr);
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} finally {
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if (isr != null) {
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isr.close();
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}
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}
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} catch (Exception ex) {
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throw new IllegalStateException("Can't execute " + resource, ex);
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}
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}
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@Override
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public Fn defineFn(String code, String... names) {
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return new TrueFn();
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}
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@Override
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public void displayPage(URL page, Runnable onPageLoad) {
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}
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@Override
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public void loadScript(Reader code) throws Exception {
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}
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private static final class FindInClass extends ClassVisitor {
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private String name;
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private int found;
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private ClassLoader loader;
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public FindInClass(ClassLoader l, ClassVisitor cv) {
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super(Opcodes.ASM4, cv);
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this.loader = l;
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}
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@Override
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public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
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this.name = name;
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super.visit(version, access, name, signature, superName, interfaces);
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}
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@Override
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public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
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if ("Lnet/java/html/js/JavaScriptResource;".equals(desc)) {
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return new LoadResource();
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}
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return super.visitAnnotation(desc, visible);
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}
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@Override
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public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
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return new FindInMethod(access, name, desc,
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super.visitMethod(access & (~Opcodes.ACC_NATIVE), name, desc, signature, exceptions)
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);
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}
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private final class FindInMethod extends MethodVisitor {
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private final String name;
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private final String desc;
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private final int access;
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private List<String> args;
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private String body;
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private boolean bodyGenerated;
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public FindInMethod(int access, String name, String desc, MethodVisitor mv) {
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super(Opcodes.ASM4, mv);
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this.access = access;
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this.name = name;
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this.desc = desc;
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}
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@Override
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public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
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if ("Lnet/java/html/js/JavaScriptBody;".equals(desc) // NOI18N
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|| "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;".equals(desc) // NOI18N
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) {
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found++;
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return new FindInAnno();
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}
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return super.visitAnnotation(desc, visible);
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}
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private void generateJSBody(List<String> args, String body) {
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this.args = args;
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this.body = body;
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}
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jaroslav@323
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@Override
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public void visitCode() {
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jaroslav@323
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if (body == null) {
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jaroslav@323
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return;
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jaroslav@323
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}
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jaroslav@323
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generateBody();
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jaroslav@323
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}
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jaroslav@323
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jaroslav@323
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private boolean generateBody() {
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jaroslav@323
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if (bodyGenerated) {
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jaroslav@323
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return false;
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jaroslav@323
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}
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jaroslav@323
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bodyGenerated = true;
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jaroslav@323
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jaroslav@323
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super.visitFieldInsn(
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Opcodes.GETSTATIC, FindInClass.this.name,
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"$$fn$$" + name + "_" + found,
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jaroslav@323
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"Lorg/apidesign/html/boot/spi/Fn;"
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jaroslav@323
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);
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jaroslav@323
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super.visitInsn(Opcodes.DUP);
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jaroslav@323
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super.visitMethodInsn(
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jaroslav@323
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Opcodes.INVOKESTATIC,
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"org/apidesign/html/boot/spi/Fn", "isValid",
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"(Lorg/apidesign/html/boot/spi/Fn;)Z"
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jaroslav@323
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);
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jaroslav@323
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Label ifNotNull = new Label();
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jaroslav@323
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super.visitJumpInsn(Opcodes.IFNE, ifNotNull);
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jaroslav@323
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jaroslav@323
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// init Fn
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jaroslav@323
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super.visitInsn(Opcodes.POP);
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jaroslav@323
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super.visitLdcInsn(Type.getObjectType(FindInClass.this.name));
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jaroslav@323
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super.visitLdcInsn(body);
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jaroslav@323
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super.visitIntInsn(Opcodes.SIPUSH, args.size());
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jaroslav@323
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super.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/String");
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jaroslav@323
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boolean needsVM = false;
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jaroslav@323
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for (int i = 0; i < args.size(); i++) {
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jaroslav@323
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assert !needsVM;
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jaroslav@323
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String argName = args.get(i);
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jaroslav@323
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needsVM = "vm".equals(argName);
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jaroslav@323
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super.visitInsn(Opcodes.DUP);
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jaroslav@323
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super.visitIntInsn(Opcodes.BIPUSH, i);
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jaroslav@323
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super.visitLdcInsn(argName);
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jaroslav@323
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super.visitInsn(Opcodes.AASTORE);
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jaroslav@323
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}
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jaroslav@323
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super.visitMethodInsn(Opcodes.INVOKESTATIC,
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jaroslav@323
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"org/apidesign/html/boot/spi/Fn", "define",
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jaroslav@323
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"(Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/String;)Lorg/apidesign/html/boot/spi/Fn;"
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jaroslav@323
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);
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jaroslav@323
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super.visitInsn(Opcodes.DUP);
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jaroslav@323
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267 |
super.visitFieldInsn(
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jaroslav@323
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Opcodes.PUTSTATIC, FindInClass.this.name,
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jaroslav@323
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"$$fn$$" + name + "_" + found,
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jaroslav@323
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"Lorg/apidesign/html/boot/spi/Fn;"
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jaroslav@323
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);
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jaroslav@323
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272 |
// end of Fn init
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jaroslav@323
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jaroslav@323
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super.visitLabel(ifNotNull);
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jaroslav@323
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275 |
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jaroslav@323
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276 |
final int offset;
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jaroslav@323
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277 |
if ((access & Opcodes.ACC_STATIC) == 0) {
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jaroslav@323
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278 |
offset = 1;
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jaroslav@323
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279 |
super.visitIntInsn(Opcodes.ALOAD, 0);
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jaroslav@323
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280 |
} else {
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jaroslav@323
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281 |
offset = 0;
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jaroslav@323
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282 |
super.visitInsn(Opcodes.ACONST_NULL);
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jaroslav@323
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283 |
}
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jaroslav@323
|
284 |
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jaroslav@323
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285 |
super.visitIntInsn(Opcodes.SIPUSH, args.size());
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jaroslav@323
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286 |
super.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/Object");
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jaroslav@323
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287 |
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jaroslav@323
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288 |
class SV extends SignatureVisitor {
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jaroslav@323
|
289 |
|
jaroslav@323
|
290 |
private boolean nowReturn;
|
jaroslav@323
|
291 |
private Type returnType;
|
jaroslav@323
|
292 |
private int index;
|
jaroslav@323
|
293 |
private int loadIndex = offset;
|
jaroslav@323
|
294 |
|
jaroslav@323
|
295 |
public SV() {
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jaroslav@323
|
296 |
super(Opcodes.ASM4);
|
jaroslav@323
|
297 |
}
|
jaroslav@323
|
298 |
|
jaroslav@323
|
299 |
@Override
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jaroslav@323
|
300 |
public void visitBaseType(char descriptor) {
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jaroslav@323
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301 |
final Type t = Type.getType("" + descriptor);
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jaroslav@323
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302 |
if (nowReturn) {
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jaroslav@323
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303 |
returnType = t;
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jaroslav@323
|
304 |
return;
|
jaroslav@323
|
305 |
}
|
jaroslav@323
|
306 |
FindInMethod.super.visitInsn(Opcodes.DUP);
|
jaroslav@323
|
307 |
FindInMethod.super.visitIntInsn(Opcodes.SIPUSH, index++);
|
jaroslav@323
|
308 |
FindInMethod.super.visitVarInsn(t.getOpcode(Opcodes.ILOAD), loadIndex++);
|
jaroslav@323
|
309 |
String factory;
|
jaroslav@323
|
310 |
switch (descriptor) {
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jaroslav@323
|
311 |
case 'I':
|
jaroslav@323
|
312 |
factory = "java/lang/Integer";
|
jaroslav@323
|
313 |
break;
|
jaroslav@323
|
314 |
case 'J':
|
jaroslav@323
|
315 |
factory = "java/lang/Long";
|
jaroslav@323
|
316 |
loadIndex++;
|
jaroslav@323
|
317 |
break;
|
jaroslav@323
|
318 |
case 'S':
|
jaroslav@323
|
319 |
factory = "java/lang/Short";
|
jaroslav@323
|
320 |
break;
|
jaroslav@323
|
321 |
case 'F':
|
jaroslav@323
|
322 |
factory = "java/lang/Float";
|
jaroslav@323
|
323 |
break;
|
jaroslav@323
|
324 |
case 'D':
|
jaroslav@323
|
325 |
factory = "java/lang/Double";
|
jaroslav@323
|
326 |
loadIndex++;
|
jaroslav@323
|
327 |
break;
|
jaroslav@323
|
328 |
case 'Z':
|
jaroslav@323
|
329 |
factory = "java/lang/Boolean";
|
jaroslav@323
|
330 |
break;
|
jaroslav@323
|
331 |
case 'C':
|
jaroslav@323
|
332 |
factory = "java/lang/Character";
|
jaroslav@323
|
333 |
break;
|
jaroslav@323
|
334 |
case 'B':
|
jaroslav@323
|
335 |
factory = "java/lang/Byte";
|
jaroslav@323
|
336 |
break;
|
jaroslav@323
|
337 |
default:
|
jaroslav@323
|
338 |
throw new IllegalStateException(t.toString());
|
jaroslav@323
|
339 |
}
|
jaroslav@323
|
340 |
FindInMethod.super.visitMethodInsn(Opcodes.INVOKESTATIC,
|
jaroslav@323
|
341 |
factory, "valueOf", "(" + descriptor + ")L" + factory + ";"
|
jaroslav@323
|
342 |
);
|
jaroslav@323
|
343 |
FindInMethod.super.visitInsn(Opcodes.AASTORE);
|
jaroslav@323
|
344 |
}
|
jaroslav@323
|
345 |
|
jaroslav@323
|
346 |
@Override
|
jaroslav@323
|
347 |
public SignatureVisitor visitArrayType() {
|
jaroslav@323
|
348 |
if (nowReturn) {
|
jaroslav@323
|
349 |
throw new IllegalStateException("Not supported yet");
|
jaroslav@323
|
350 |
}
|
jaroslav@323
|
351 |
loadObject();
|
jaroslav@323
|
352 |
return new SignatureWriter();
|
jaroslav@323
|
353 |
}
|
jaroslav@323
|
354 |
|
jaroslav@323
|
355 |
@Override
|
jaroslav@323
|
356 |
public void visitClassType(String name) {
|
jaroslav@323
|
357 |
if (nowReturn) {
|
jaroslav@323
|
358 |
returnType = Type.getObjectType(name);
|
jaroslav@323
|
359 |
return;
|
jaroslav@323
|
360 |
}
|
jaroslav@323
|
361 |
loadObject();
|
jaroslav@323
|
362 |
}
|
jaroslav@323
|
363 |
|
jaroslav@323
|
364 |
@Override
|
jaroslav@323
|
365 |
public SignatureVisitor visitReturnType() {
|
jaroslav@323
|
366 |
nowReturn = true;
|
jaroslav@323
|
367 |
return this;
|
jaroslav@323
|
368 |
}
|
jaroslav@323
|
369 |
|
jaroslav@323
|
370 |
private void loadObject() {
|
jaroslav@323
|
371 |
FindInMethod.super.visitInsn(Opcodes.DUP);
|
jaroslav@323
|
372 |
FindInMethod.super.visitIntInsn(Opcodes.SIPUSH, index++);
|
jaroslav@323
|
373 |
FindInMethod.super.visitVarInsn(Opcodes.ALOAD, loadIndex++);
|
jaroslav@323
|
374 |
FindInMethod.super.visitInsn(Opcodes.AASTORE);
|
jaroslav@323
|
375 |
}
|
jaroslav@323
|
376 |
|
jaroslav@323
|
377 |
}
|
jaroslav@323
|
378 |
SV sv = new SV();
|
jaroslav@323
|
379 |
SignatureReader sr = new SignatureReader(desc);
|
jaroslav@323
|
380 |
sr.accept(sv);
|
jaroslav@323
|
381 |
|
jaroslav@323
|
382 |
if (needsVM) {
|
jaroslav@323
|
383 |
FindInMethod.super.visitInsn(Opcodes.DUP);
|
jaroslav@323
|
384 |
FindInMethod.super.visitIntInsn(Opcodes.SIPUSH, sv.index);
|
jaroslav@323
|
385 |
int lastSlash = FindInClass.this.name.lastIndexOf('/');
|
jaroslav@323
|
386 |
String jsCallbacks = FindInClass.this.name.substring(0, lastSlash + 1) + "$JsCallbacks$";
|
jaroslav@323
|
387 |
FindInMethod.super.visitFieldInsn(Opcodes.GETSTATIC, jsCallbacks, "VM", "L" + jsCallbacks + ";");
|
jaroslav@323
|
388 |
FindInMethod.super.visitMethodInsn(Opcodes.INVOKEVIRTUAL, jsCallbacks, "current", "()L" + jsCallbacks + ";");
|
jaroslav@323
|
389 |
FindInMethod.super.visitInsn(Opcodes.AASTORE);
|
jaroslav@323
|
390 |
}
|
jaroslav@323
|
391 |
|
jaroslav@323
|
392 |
super.visitMethodInsn(Opcodes.INVOKEVIRTUAL,
|
jaroslav@323
|
393 |
"org/apidesign/html/boot/spi/Fn", "invoke", "(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;"
|
jaroslav@323
|
394 |
);
|
jaroslav@323
|
395 |
switch (sv.returnType.getSort()) {
|
jaroslav@323
|
396 |
case Type.VOID:
|
jaroslav@323
|
397 |
super.visitInsn(Opcodes.RETURN);
|
jaroslav@323
|
398 |
break;
|
jaroslav@323
|
399 |
case Type.ARRAY:
|
jaroslav@323
|
400 |
case Type.OBJECT:
|
jaroslav@323
|
401 |
super.visitTypeInsn(Opcodes.CHECKCAST, sv.returnType.getInternalName());
|
jaroslav@323
|
402 |
super.visitInsn(Opcodes.ARETURN);
|
jaroslav@323
|
403 |
break;
|
jaroslav@323
|
404 |
case Type.BOOLEAN:
|
jaroslav@323
|
405 |
super.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Boolean");
|
jaroslav@323
|
406 |
super.visitMethodInsn(Opcodes.INVOKEVIRTUAL,
|
jaroslav@323
|
407 |
"java/lang/Boolean", "booleanValue", "()Z"
|
jaroslav@323
|
408 |
);
|
jaroslav@323
|
409 |
super.visitInsn(Opcodes.IRETURN);
|
jaroslav@323
|
410 |
break;
|
jaroslav@323
|
411 |
default:
|
jaroslav@323
|
412 |
super.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Number");
|
jaroslav@323
|
413 |
super.visitMethodInsn(Opcodes.INVOKEVIRTUAL,
|
jaroslav@323
|
414 |
"java/lang/Number", sv.returnType.getClassName() + "Value", "()" + sv.returnType.getDescriptor()
|
jaroslav@323
|
415 |
);
|
jaroslav@323
|
416 |
super.visitInsn(sv.returnType.getOpcode(Opcodes.IRETURN));
|
jaroslav@323
|
417 |
}
|
jaroslav@323
|
418 |
return true;
|
jaroslav@323
|
419 |
}
|
jaroslav@323
|
420 |
|
jaroslav@323
|
421 |
@Override
|
jaroslav@323
|
422 |
public void visitEnd() {
|
jaroslav@323
|
423 |
super.visitEnd();
|
jaroslav@323
|
424 |
if (body != null) {
|
jaroslav@323
|
425 |
if (generateBody()) {
|
jaroslav@323
|
426 |
// native method
|
jaroslav@323
|
427 |
super.visitMaxs(1, 0);
|
jaroslav@323
|
428 |
}
|
jaroslav@323
|
429 |
FindInClass.this.visitField(
|
jaroslav@323
|
430 |
Opcodes.ACC_PRIVATE | Opcodes.ACC_STATIC,
|
jaroslav@323
|
431 |
"$$fn$$" + name + "_" + found,
|
jaroslav@323
|
432 |
"Lorg/apidesign/html/boot/spi/Fn;",
|
jaroslav@323
|
433 |
null, null
|
jaroslav@323
|
434 |
);
|
jaroslav@323
|
435 |
}
|
jaroslav@323
|
436 |
}
|
jaroslav@323
|
437 |
|
jaroslav@323
|
438 |
private final class FindInAnno extends AnnotationVisitor {
|
jaroslav@323
|
439 |
|
jaroslav@323
|
440 |
private List<String> args = new ArrayList<String>();
|
jaroslav@323
|
441 |
private String body;
|
jaroslav@323
|
442 |
private boolean javacall = false;
|
jaroslav@323
|
443 |
|
jaroslav@323
|
444 |
public FindInAnno() {
|
jaroslav@323
|
445 |
super(Opcodes.ASM4);
|
jaroslav@323
|
446 |
}
|
jaroslav@323
|
447 |
|
jaroslav@323
|
448 |
@Override
|
jaroslav@323
|
449 |
public void visit(String name, Object value) {
|
jaroslav@323
|
450 |
if (name == null) {
|
jaroslav@323
|
451 |
args.add((String) value);
|
jaroslav@323
|
452 |
return;
|
jaroslav@323
|
453 |
}
|
jaroslav@323
|
454 |
if (name.equals("javacall")) { // NOI18N
|
jaroslav@323
|
455 |
javacall = (Boolean) value;
|
jaroslav@323
|
456 |
return;
|
jaroslav@323
|
457 |
}
|
jaroslav@323
|
458 |
assert name.equals("body");
|
jaroslav@323
|
459 |
body = (String) value;
|
jaroslav@323
|
460 |
}
|
jaroslav@323
|
461 |
|
jaroslav@323
|
462 |
@Override
|
jaroslav@323
|
463 |
public AnnotationVisitor visitArray(String name) {
|
jaroslav@323
|
464 |
return this;
|
jaroslav@323
|
465 |
}
|
jaroslav@323
|
466 |
|
jaroslav@323
|
467 |
@Override
|
jaroslav@323
|
468 |
public void visitEnd() {
|
jaroslav@323
|
469 |
if (body != null) {
|
jaroslav@323
|
470 |
if (javacall) {
|
jaroslav@323
|
471 |
body = callback(body);
|
jaroslav@323
|
472 |
args.add("vm");
|
jaroslav@323
|
473 |
}
|
jaroslav@323
|
474 |
generateJSBody(args, body);
|
jaroslav@323
|
475 |
}
|
jaroslav@323
|
476 |
}
|
jaroslav@323
|
477 |
}
|
jaroslav@323
|
478 |
}
|
jaroslav@323
|
479 |
|
jaroslav@323
|
480 |
private final class LoadResource extends AnnotationVisitor {
|
jaroslav@323
|
481 |
|
jaroslav@323
|
482 |
public LoadResource() {
|
jaroslav@323
|
483 |
super(Opcodes.ASM4);
|
jaroslav@323
|
484 |
}
|
jaroslav@323
|
485 |
|
jaroslav@323
|
486 |
@Override
|
jaroslav@323
|
487 |
public void visit(String attrName, Object value) {
|
jaroslav@323
|
488 |
String relPath = (String) value;
|
jaroslav@323
|
489 |
if (relPath.startsWith("/")) {
|
jaroslav@323
|
490 |
loadScript(loader, relPath);
|
jaroslav@323
|
491 |
} else {
|
jaroslav@323
|
492 |
int last = name.lastIndexOf('/');
|
jaroslav@323
|
493 |
String fullPath = name.substring(0, last + 1) + relPath;
|
jaroslav@323
|
494 |
loadScript(loader, fullPath);
|
jaroslav@323
|
495 |
}
|
jaroslav@323
|
496 |
}
|
jaroslav@323
|
497 |
}
|
jaroslav@323
|
498 |
}
|
jaroslav@323
|
499 |
|
jaroslav@323
|
500 |
private static class ClassWriterEx extends ClassWriter {
|
jaroslav@323
|
501 |
|
jaroslav@323
|
502 |
private ClassLoader loader;
|
jaroslav@323
|
503 |
|
jaroslav@323
|
504 |
public ClassWriterEx(ClassLoader l, ClassReader classReader, int flags) {
|
jaroslav@323
|
505 |
super(classReader, flags);
|
jaroslav@323
|
506 |
this.loader = l;
|
jaroslav@323
|
507 |
}
|
jaroslav@323
|
508 |
|
jaroslav@323
|
509 |
@Override
|
jaroslav@323
|
510 |
protected String getCommonSuperClass(final String type1, final String type2) {
|
jaroslav@323
|
511 |
Class<?> c, d;
|
jaroslav@323
|
512 |
try {
|
jaroslav@323
|
513 |
c = Class.forName(type1.replace('/', '.'), false, loader);
|
jaroslav@323
|
514 |
d = Class.forName(type2.replace('/', '.'), false, loader);
|
jaroslav@323
|
515 |
} catch (Exception e) {
|
jaroslav@323
|
516 |
throw new RuntimeException(e.toString());
|
jaroslav@323
|
517 |
}
|
jaroslav@323
|
518 |
if (c.isAssignableFrom(d)) {
|
jaroslav@323
|
519 |
return type1;
|
jaroslav@323
|
520 |
}
|
jaroslav@323
|
521 |
if (d.isAssignableFrom(c)) {
|
jaroslav@323
|
522 |
return type2;
|
jaroslav@323
|
523 |
}
|
jaroslav@323
|
524 |
if (c.isInterface() || d.isInterface()) {
|
jaroslav@323
|
525 |
return "java/lang/Object";
|
jaroslav@323
|
526 |
} else {
|
jaroslav@323
|
527 |
do {
|
jaroslav@323
|
528 |
c = c.getSuperclass();
|
jaroslav@323
|
529 |
} while (!c.isAssignableFrom(d));
|
jaroslav@323
|
530 |
return c.getName().replace('.', '/');
|
jaroslav@323
|
531 |
}
|
jaroslav@323
|
532 |
}
|
jaroslav@323
|
533 |
}
|
jaroslav@323
|
534 |
|
jaroslav@323
|
535 |
static byte[] transform(ClassLoader loader, byte[] arr) {
|
jaroslav@323
|
536 |
ClassReader cr = new ClassReader(arr) {
|
jaroslav@323
|
537 |
// to allow us to compile with -profile compact1 on
|
jaroslav@323
|
538 |
// JDK8 while processing the class as JDK7, the highest
|
jaroslav@323
|
539 |
// class format asm 4.1 understands to
|
jaroslav@323
|
540 |
@Override
|
jaroslav@323
|
541 |
public short readShort(int index) {
|
jaroslav@323
|
542 |
short s = super.readShort(index);
|
jaroslav@323
|
543 |
if (index == 6 && s > Opcodes.V1_7) {
|
jaroslav@323
|
544 |
return Opcodes.V1_7;
|
jaroslav@323
|
545 |
}
|
jaroslav@323
|
546 |
return s;
|
jaroslav@323
|
547 |
}
|
jaroslav@323
|
548 |
};
|
jaroslav@323
|
549 |
FindInClass tst = new FindInClass(loader, null);
|
jaroslav@323
|
550 |
cr.accept(tst, 0);
|
jaroslav@323
|
551 |
if (tst.found > 0) {
|
jaroslav@323
|
552 |
ClassWriter w = new ClassWriterEx(loader, cr, ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
|
jaroslav@323
|
553 |
FindInClass fic = new FindInClass(loader, w);
|
jaroslav@323
|
554 |
cr.accept(fic, 0);
|
jaroslav@323
|
555 |
arr = w.toByteArray();
|
jaroslav@323
|
556 |
}
|
jaroslav@323
|
557 |
return arr;
|
jaroslav@323
|
558 |
}
|
jaroslav@323
|
559 |
|
jaroslav@323
|
560 |
private static final class TrueFn extends Fn {
|
jaroslav@323
|
561 |
@Override
|
jaroslav@323
|
562 |
public Object invoke(Object thiz, Object... args) throws Exception {
|
jaroslav@323
|
563 |
return Boolean.TRUE;
|
jaroslav@323
|
564 |
}
|
jaroslav@323
|
565 |
} // end of TrueFn
|
jaroslav@123
|
566 |
}
|