jaroslav@750
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/**
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jaroslav@750
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* Back 2 Browser Bytecode Translator
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jaroslav@750
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* Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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jaroslav@750
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*
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jaroslav@750
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* This program is free software: you can redistribute it and/or modify
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jaroslav@750
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* it under the terms of the GNU General Public License as published by
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jaroslav@750
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* the Free Software Foundation, version 2 of the License.
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jaroslav@750
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*
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jaroslav@750
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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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jaroslav@750
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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jaroslav@750
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*
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jaroslav@750
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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://opensource.org/licenses/GPL-2.0.
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jaroslav@750
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*/
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package org.apidesign.vm4brwsr;
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jaroslav@750
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jaroslav@750
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import com.google.javascript.jscomp.CommandLineRunner;
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jaroslav@750
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import com.google.javascript.jscomp.SourceFile;
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jaroslav@750
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import java.io.IOException;
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jaroslav@750
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import java.io.OutputStream;
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jaroslav@750
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import java.io.PrintStream;
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lubomir@869
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import org.apidesign.bck2brwsr.core.ExtraJavaScript;
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jaroslav@750
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/**
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jaroslav@750
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*
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* @author Jaroslav Tulach <jtulach@netbeans.org>
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*/
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@ExtraJavaScript(processByteCode = false, resource="")
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lubomir@869
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final class ClosureWrapper extends CommandLineRunner {
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private static final String[] ARGS = { "--compilation_level", "SIMPLE_OPTIMIZATIONS", "--js", "bck2brwsr-raw.js" /*, "--debug", "--formatting", "PRETTY_PRINT" */ };
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jaroslav@750
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jaroslav@750
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private final Bck2Brwsr.Resources res;
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jaroslav@750
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private final StringArray classes;
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lubomir@1086
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private final boolean extension;
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jaroslav@1491
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private final StringArray rootClasses;
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lubomir@869
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lubomir@869
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private String compiledCode;
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lubomir@869
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private String externsCode;
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lubomir@869
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lubomir@869
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private ClosureWrapper(Appendable out,
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lubomir@869
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String compilationLevel,
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lubomir@1086
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Bck2Brwsr.Resources res,
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jaroslav@1491
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StringArray rootClasses,
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lubomir@1086
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StringArray classes,
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boolean extension) {
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jaroslav@750
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super(
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lubomir@869
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generateArguments(compilationLevel),
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jaroslav@750
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new PrintStream(new APS(out)), System.err
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);
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this.res = res;
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jaroslav@1491
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this.rootClasses = rootClasses;
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this.classes = classes;
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this.extension = extension;
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}
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jaroslav@750
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@Override
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protected List<SourceFile> createInputs(List<String> files, boolean allowStdIn) throws FlagUsageException, IOException {
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jaroslav@750
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if (files.size() != 1 || !"bck2brwsr-raw.js".equals(files.get(0))) {
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jaroslav@750
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throw new IOException("Unexpected files: " + files);
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jaroslav@750
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}
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lubomir@869
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return Collections.nCopies(
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lubomir@869
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1,
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lubomir@869
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SourceFile.fromGenerator(
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lubomir@869
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"bck2brwsr-raw.js",
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new SourceFile.Generator() {
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lubomir@869
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@Override
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lubomir@869
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public String getCode() {
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return getCompiledCode();
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}
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}));
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}
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lubomir@869
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@Override
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protected List<SourceFile> createExterns()
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throws FlagUsageException, IOException {
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final List<SourceFile> externsFiles =
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lubomir@869
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new ArrayList<SourceFile>(super.createExterns());
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externsFiles.add(
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SourceFile.fromGenerator(
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"bck2brwsr_externs.js",
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new SourceFile.Generator() {
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@Override
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lubomir@869
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public String getCode() {
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lubomir@869
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return getExternsCode();
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}
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}));
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return externsFiles;
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}
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private String getCompiledCode() {
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lubomir@869
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if (compiledCode == null) {
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jaroslav@750
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StringBuilder sb = new StringBuilder();
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jaroslav@750
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try {
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VM.compile(sb, res, rootClasses, classes, extension);
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compiledCode = sb.toString();
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} catch (IOException ex) {
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compiledCode = ex.getMessage();
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}
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}
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return compiledCode;
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}
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private String getExternsCode() {
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if (externsCode == null) {
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// need compiled code at this point
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getCompiledCode();
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final StringBuilder sb = new StringBuilder("function RAW() {};\n");
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for (final String extern: FIXED_EXTERNS) {
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sb.append("RAW.prototype.").append(extern).append(";\n");
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}
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externsCode = sb.toString();
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}
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return externsCode;
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}
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lubomir@849
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private static final class APS extends OutputStream {
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private final Appendable out;
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public APS(Appendable out) {
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this.out = out;
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}
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@Override
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public void write(int b) throws IOException {
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out.append((char)b);
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}
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}
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lubomir@849
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private static String[] generateArguments(String compilationLevel) {
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String[] finalArgs = ARGS.clone();
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finalArgs[1] = compilationLevel;
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return finalArgs;
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}
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static int produceTo(Appendable output,
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ObfuscationLevel obfuscationLevel,
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Bck2Brwsr.Resources resources,
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jaroslav@1491
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StringArray rootArr,
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lubomir@1086
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StringArray arr,
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lubomir@1086
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boolean extension) throws IOException {
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lubomir@1086
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final ClosureWrapper cw =
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new ClosureWrapper(output,
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lubomir@1086
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(obfuscationLevel == ObfuscationLevel.FULL)
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? "ADVANCED_OPTIMIZATIONS"
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: "SIMPLE_OPTIMIZATIONS",
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resources, rootArr, arr, extension);
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jaroslav@750
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try {
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return cw.doRun();
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} catch (FlagUsageException ex) {
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throw new IOException(ex);
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}
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}
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private static final String[] FIXED_EXTERNS = {
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"bck2brwsr",
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"bck2BrwsrCnvrt",
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lubomir@1094
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"registerExtension",
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lubomir@1083
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"$class",
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"anno",
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"array",
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"access",
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"cls",
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"vm",
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"loadClass",
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"loadBytes",
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"jvmName",
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"primitive",
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"superclass",
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"cnstr",
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"add32",
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"sub32",
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"mul32",
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"neg32",
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"toInt8",
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"toInt16",
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"next32",
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"high32",
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"toInt32",
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"toFP",
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"toLong",
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"toExactString",
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"add64",
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lubomir@1083
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"sub64",
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"mul64",
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lubomir@1083
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"and64",
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lubomir@1083
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"or64",
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lubomir@1083
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"xor64",
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"shl64",
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"shr64",
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"ushr64",
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"compare64",
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"neg64",
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"div32",
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"mod32",
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"div64",
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"mod64",
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lubomir@1083
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"at",
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lubomir@1083
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"getClass__Ljava_lang_Class_2",
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lubomir@1083
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"clone__Ljava_lang_Object_2"
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lubomir@1083
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};
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}
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