1.1 --- a/vm/src/test/java/org/apidesign/vm4brwsr/StaticMethodTest.java Sun Nov 25 21:23:06 2012 +0100
1.2 +++ b/vm/src/test/java/org/apidesign/vm4brwsr/StaticMethodTest.java Sun Nov 25 21:24:03 2012 +0100
1.3 @@ -271,12 +271,20 @@
1.4 }
1.5
1.6 static Invocable compileClass(StringBuilder sb, String... names) throws ScriptException, IOException {
1.7 + return compileClass(sb, null, names);
1.8 + }
1.9 + static Invocable compileClass(
1.10 + StringBuilder sb, ScriptEngine[] eng, String... names
1.11 + ) throws ScriptException, IOException {
1.12 if (sb == null) {
1.13 sb = new StringBuilder();
1.14 }
1.15 GenJS.compile(sb, names);
1.16 ScriptEngineManager sem = new ScriptEngineManager();
1.17 ScriptEngine js = sem.getEngineByExtension("js");
1.18 + if (eng != null) {
1.19 + eng[0] = js;
1.20 + }
1.21 try {
1.22 Object res = js.eval(sb.toString());
1.23 assertTrue(js instanceof Invocable, "It is invocable object: " + res);
2.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
2.2 +++ b/vm/src/test/java/org/apidesign/vm4brwsr/VMLazy.java Sun Nov 25 21:24:03 2012 +0100
2.3 @@ -0,0 +1,46 @@
2.4 +/**
2.5 + * Back 2 Browser Bytecode Translator
2.6 + * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
2.7 + *
2.8 + * This program is free software: you can redistribute it and/or modify
2.9 + * it under the terms of the GNU General Public License as published by
2.10 + * the Free Software Foundation, version 2 of the License.
2.11 + *
2.12 + * This program is distributed in the hope that it will be useful,
2.13 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
2.14 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2.15 + * GNU General Public License for more details.
2.16 + *
2.17 + * You should have received a copy of the GNU General Public License
2.18 + * along with this program. Look for COPYING file in the top folder.
2.19 + * If not, see http://opensource.org/licenses/GPL-2.0.
2.20 + */
2.21 +package org.apidesign.vm4brwsr;
2.22 +
2.23 +import java.io.ByteArrayInputStream;
2.24 +import java.io.IOException;
2.25 +
2.26 +/**
2.27 + *
2.28 + * @author Jaroslav Tulach <jtulach@netbeans.org>
2.29 + */
2.30 +class VMLazy extends ByteCodeToJavaScript {
2.31 + private VMLazy(Appendable out) {
2.32 + super(out);
2.33 + }
2.34 +
2.35 + static String toJavaScript(byte[] is) throws IOException {
2.36 + StringBuilder sb = new StringBuilder();
2.37 + new VMLazy(sb).compile(new ByteArrayInputStream(is));
2.38 + return sb.toString().toString();
2.39 + }
2.40 +
2.41 + @Override
2.42 + protected boolean requireReference(String internalClassName) {
2.43 + return false;
2.44 + }
2.45 +
2.46 + @Override
2.47 + protected void requireScript(String resourcePath) {
2.48 + }
2.49 +}
3.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
3.2 +++ b/vm/src/test/java/org/apidesign/vm4brwsr/VMLazyTest.java Sun Nov 25 21:24:03 2012 +0100
3.3 @@ -0,0 +1,124 @@
3.4 +/**
3.5 + * Back 2 Browser Bytecode Translator
3.6 + * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
3.7 + *
3.8 + * This program is free software: you can redistribute it and/or modify
3.9 + * it under the terms of the GNU General Public License as published by
3.10 + * the Free Software Foundation, version 2 of the License.
3.11 + *
3.12 + * This program is distributed in the hope that it will be useful,
3.13 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
3.14 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3.15 + * GNU General Public License for more details.
3.16 + *
3.17 + * You should have received a copy of the GNU General Public License
3.18 + * along with this program. Look for COPYING file in the top folder.
3.19 + * If not, see http://opensource.org/licenses/GPL-2.0.
3.20 + */
3.21 +package org.apidesign.vm4brwsr;
3.22 +
3.23 +import java.io.IOException;
3.24 +import java.io.InputStream;
3.25 +import javax.script.Invocable;
3.26 +import javax.script.ScriptContext;
3.27 +import javax.script.ScriptEngine;
3.28 +import javax.script.ScriptException;
3.29 +import org.testng.annotations.BeforeClass;
3.30 +import static org.testng.Assert.*;
3.31 +import org.testng.annotations.Test;
3.32 +
3.33 +/** Implements loading class by class.
3.34 + *
3.35 + * @author Jaroslav Tulach <jtulach@netbeans.org>
3.36 + */
3.37 +public class VMLazyTest {
3.38 +
3.39 +
3.40 + private static CharSequence codeSeq;
3.41 + private static Invocable code;
3.42 +
3.43 + @BeforeClass
3.44 + public void compileTheCode() throws Exception {
3.45 + StringBuilder sb = new StringBuilder();
3.46 +
3.47 + sb.append("\nfunction test(clazz, as, method) {");
3.48 + sb.append("\n var l = new lazyVM();");
3.49 + sb.append("\n var c = l.loadClass(clazz, as);");
3.50 + sb.append("\n return c[method]();");
3.51 + sb.append("\n}");
3.52 +
3.53 +
3.54 + sb.append("\nfunction lazyVM() {");
3.55 + sb.append("\n var self = this;");
3.56 + sb.append("\n this.constructor.prototype.Identity = function(value) {");
3.57 + sb.append("\n var self = this;");
3.58 + sb.append("\n self.value = value;");
3.59 + sb.append("\n self.call = function() { return self.value; };");
3.60 + sb.append("\n };");
3.61 + sb.append("\n");
3.62 + sb.append("\n this.constructor.prototype.loadClass = function(res, name) {");
3.63 + sb.append("\n var script = org_apidesign_vm4brwsr_VMLazy_toJavaScriptLjava_lang_StringAB(loader.get(res + '.class'));");
3.64 +// sb.append("\n throw script.toString();");
3.65 + sb.append("\n new Function(");
3.66 + sb.append("\n 'arguments[0][arguments[1]]=new lazyVM.prototype.Identity(' + script + ').call'");
3.67 + sb.append("\n )(self, name);");
3.68 + sb.append("\n };");
3.69 + sb.append("\n");
3.70 + sb.append("\n}\n");
3.71 +
3.72 + ScriptEngine[] arr = { null };
3.73 + code = StaticMethodTest.compileClass(sb, arr,
3.74 + "org/apidesign/vm4brwsr/VMLazy"
3.75 + );
3.76 + arr[0].getContext().setAttribute("loader", new FindBytes(), ScriptContext.ENGINE_SCOPE);
3.77 + codeSeq = sb;
3.78 + }
3.79 +
3.80 + @Test public void invokeStaticMethod() throws Exception {
3.81 + assertExec("Trying to get -1", "test", Double.valueOf(-1),
3.82 + "org/apidesign/vm4brwsr/StaticMethod", "org_apidesign_vm4brwsr_StaticMethod", "minusOne"
3.83 + );
3.84 + }
3.85 +
3.86 +
3.87 + private static void assertExec(String msg, String methodName, Object expRes, Object... args) throws Exception {
3.88 + Object ret = null;
3.89 + try {
3.90 + ret = code.invokeFunction(methodName, args);
3.91 + } catch (ScriptException ex) {
3.92 + fail("Execution failed in\n" + StaticMethodTest.dumpJS(codeSeq), ex);
3.93 + } catch (NoSuchMethodException ex) {
3.94 + fail("Cannot find method in\n" + StaticMethodTest.dumpJS(codeSeq), ex);
3.95 + }
3.96 + if (ret == null && expRes == null) {
3.97 + return;
3.98 + }
3.99 + if (expRes.equals(ret)) {
3.100 + return;
3.101 + }
3.102 + assertEquals(ret, expRes, msg + "was: " + ret + "\n" + codeSeq);
3.103 + }
3.104 +
3.105 + public static final class FindBytes {
3.106 + public byte[] get(String name) throws IOException {
3.107 + InputStream is = VMLazyTest.class.getClassLoader().getResourceAsStream(name);
3.108 + if (is == null) {
3.109 + throw new IOException("Can't find " + name);
3.110 + }
3.111 + byte[] arr = new byte[is.available()];
3.112 + int len = is.read(arr);
3.113 + if (len != arr.length) {
3.114 + throw new IOException("Read only " + len + " wanting " + arr.length);
3.115 + }
3.116 + System.err.print("loader['" + name + "'] = [");
3.117 + for (int i = 0; i < arr.length; i++) {
3.118 + if (i > 0) {
3.119 + System.err.print(", ");
3.120 + }
3.121 + System.err.print(arr[i]);
3.122 + }
3.123 + System.err.println("]");
3.124 + return arr;
3.125 + }
3.126 + }
3.127 +}