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jaroslav@0
|
1 |
/*
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jaroslav@0
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2 |
Java 4 Browser Bytecode Translator
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jaroslav@0
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3 |
Copyright (C) 2012-2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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jaroslav@0
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4 |
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jaroslav@0
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5 |
This program is free software: you can redistribute it and/or modify
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jaroslav@0
|
6 |
it under the terms of the GNU General Public License as published by
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jaroslav@0
|
7 |
the Free Software Foundation, version 2 of the License.
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jaroslav@0
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8 |
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jaroslav@0
|
9 |
This program is distributed in the hope that it will be useful,
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jaroslav@0
|
10 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
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jaroslav@0
|
11 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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jaroslav@0
|
12 |
GNU General Public License for more details.
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jaroslav@0
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13 |
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jaroslav@0
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14 |
You should have received a copy of the GNU General Public License
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jaroslav@0
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15 |
along with this program. Look for COPYING file in the top folder.
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jaroslav@0
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16 |
If not, see http://opensource.org/licenses/GPL-2.0.
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jaroslav@0
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17 |
*/
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jaroslav@0
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18 |
package org.apidesign.java4browser;
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jaroslav@0
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19 |
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jaroslav@0
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20 |
import java.io.IOException;
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jaroslav@0
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21 |
import java.io.InputStream;
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jaroslav@0
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22 |
import java.util.List;
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jaroslav@2
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23 |
import static org.netbeans.modules.classfile.ByteCodes.*;
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jaroslav@8
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24 |
import org.netbeans.modules.classfile.CPClassInfo;
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jaroslav@8
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25 |
import org.netbeans.modules.classfile.CPEntry;
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jaroslav@8
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26 |
import org.netbeans.modules.classfile.CPFieldInfo;
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jaroslav@4
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27 |
import org.netbeans.modules.classfile.CPMethodInfo;
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jaroslav@0
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28 |
import org.netbeans.modules.classfile.ClassFile;
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jaroslav@13
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29 |
import org.netbeans.modules.classfile.ClassName;
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jaroslav@0
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30 |
import org.netbeans.modules.classfile.Code;
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jaroslav@0
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31 |
import org.netbeans.modules.classfile.Method;
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jaroslav@0
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32 |
import org.netbeans.modules.classfile.Parameter;
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jaroslav@9
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33 |
import org.netbeans.modules.classfile.Variable;
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jaroslav@0
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34 |
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jaroslav@0
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35 |
/** Translator of the code inside class files to JavaScript.
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jaroslav@0
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36 |
*
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jaroslav@0
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37 |
* @author Jaroslav Tulach <jtulach@netbeans.org>
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jaroslav@0
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38 |
*/
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jaroslav@0
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39 |
public final class ByteCodeToJavaScript {
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jaroslav@0
|
40 |
private final ClassFile jc;
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jaroslav@0
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41 |
private final Appendable out;
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jaroslav@0
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42 |
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jaroslav@0
|
43 |
private ByteCodeToJavaScript(ClassFile jc, Appendable out) {
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jaroslav@0
|
44 |
this.jc = jc;
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jaroslav@0
|
45 |
this.out = out;
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jaroslav@0
|
46 |
}
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jaroslav@0
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47 |
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jaroslav@0
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48 |
/** Converts a given class file to a JavaScript version.
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jaroslav@0
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49 |
* @param fileName the name of the file we are reading
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jaroslav@0
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50 |
* @param classFile input stream with code of the .class file
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jaroslav@0
|
51 |
* @param out a {@link StringBuilder} or similar to generate the output to
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jaroslav@0
|
52 |
* @throws IOException if something goes wrong during read or write or translating
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jaroslav@0
|
53 |
*/
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jaroslav@0
|
54 |
public static void compile(String fileName, InputStream classFile, Appendable out) throws IOException {
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jaroslav@0
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55 |
ClassFile jc = new ClassFile(classFile, true);
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jaroslav@0
|
56 |
ByteCodeToJavaScript compiler = new ByteCodeToJavaScript(jc, out);
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jaroslav@0
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57 |
for (Method m : jc.getMethods()) {
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jaroslav@0
|
58 |
if (m.isStatic()) {
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jaroslav@0
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59 |
compiler.generateStaticMethod(m);
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jaroslav@10
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60 |
} else {
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jaroslav@10
|
61 |
compiler.generateInstanceMethod(m);
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jaroslav@0
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62 |
}
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jaroslav@0
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63 |
}
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jaroslav@9
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64 |
for (Variable v : jc.getVariables()) {
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jaroslav@9
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65 |
if (v.isStatic()) {
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jaroslav@9
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66 |
compiler.generateStaticField(v);
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jaroslav@9
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67 |
}
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jaroslav@9
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68 |
}
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jaroslav@13
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69 |
out.append("function java_lang_Object(){}\n"); // XXX temporary
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jaroslav@10
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70 |
out.append("function java_lang_Object_consV(self){}\n"); // XXX temporary
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jaroslav@10
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71 |
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jaroslav@13
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72 |
final String className = jc.getName().getExternalName().replace('.', '_');
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jaroslav@13
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73 |
out.append("\nfunction ").append(className);
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jaroslav@10
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74 |
out.append("() {");
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jaroslav@10
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75 |
for (Method m : jc.getMethods()) {
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jaroslav@10
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76 |
if (!m.isStatic()) {
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jaroslav@12
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77 |
compiler.generateMethodReference(m);
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jaroslav@10
|
78 |
}
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jaroslav@10
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79 |
}
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jaroslav@10
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80 |
for (Variable v : jc.getVariables()) {
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jaroslav@10
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81 |
if (!v.isStatic()) {
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jaroslav@10
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82 |
out.append("\n this." + v.getName() + " = 0;");
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jaroslav@10
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83 |
}
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jaroslav@10
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84 |
}
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jaroslav@17
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85 |
out.append("\n this.$instOf_").append(className).append(" = true;");
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jaroslav@10
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86 |
out.append("\n}");
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jaroslav@13
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87 |
ClassName sc = jc.getSuperClass();
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jaroslav@13
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88 |
if (sc != null) {
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jaroslav@13
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out.append("\n ").append(className)
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jaroslav@13
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90 |
.append(".prototype = new ").append(sc.getExternalName().replace('.', '_'));
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jaroslav@13
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91 |
}
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jaroslav@0
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92 |
}
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jaroslav@0
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93 |
private void generateStaticMethod(Method m) throws IOException {
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jaroslav@1
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94 |
out.append("\nfunction ").append(
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jaroslav@0
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95 |
jc.getName().getExternalName().replace('.', '_')
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jaroslav@10
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96 |
).append('_').append(findMethodName(m));
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jaroslav@0
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97 |
out.append('(');
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jaroslav@0
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98 |
String space = "";
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jaroslav@10
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99 |
List<Parameter> args = m.getParameters();
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jaroslav@2
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100 |
for (int index = 0, i = 0; i < args.size(); i++) {
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jaroslav@0
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101 |
out.append(space);
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jaroslav@2
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102 |
out.append("arg").append(String.valueOf(index));
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jaroslav@0
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103 |
space = ",";
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jaroslav@2
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104 |
final String desc = args.get(i).getDescriptor();
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jaroslav@3
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105 |
if ("D".equals(desc) || "J".equals(desc)) {
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jaroslav@2
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106 |
index += 2;
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jaroslav@2
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107 |
} else {
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jaroslav@2
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108 |
index++;
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jaroslav@2
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109 |
}
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jaroslav@0
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110 |
}
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jaroslav@5
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111 |
out.append(") {").append("\n");
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jaroslav@0
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112 |
final Code code = m.getCode();
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jaroslav@0
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113 |
int len = code.getMaxLocals();
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jaroslav@5
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114 |
for (int index = args.size(), i = args.size(); i < len; i++) {
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jaroslav@5
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115 |
out.append(" var ");
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jaroslav@5
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116 |
out.append("arg").append(String.valueOf(i)).append(";\n");
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jaroslav@0
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117 |
}
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jaroslav@10
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118 |
out.append(" var stack = new Array(");
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jaroslav@10
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119 |
out.append(Integer.toString(code.getMaxStack()));
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jaroslav@10
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120 |
out.append(");\n");
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jaroslav@10
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121 |
produceCode(code.getByteCodes());
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jaroslav@10
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122 |
out.append("}");
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jaroslav@10
|
123 |
}
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jaroslav@10
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124 |
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jaroslav@12
|
125 |
private void generateMethodReference(Method m) throws IOException {
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jaroslav@12
|
126 |
final String name = findMethodName(m);
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jaroslav@12
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127 |
out.append("\n this.").append(name).append(" = ")
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jaroslav@12
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128 |
.append(jc.getName().getExternalName().replace('.', '_'))
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jaroslav@12
|
129 |
.append('_').append(name).append(";");
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jaroslav@12
|
130 |
}
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jaroslav@12
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131 |
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jaroslav@10
|
132 |
private void generateInstanceMethod(Method m) throws IOException {
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jaroslav@10
|
133 |
out.append("\nfunction ").append(
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jaroslav@10
|
134 |
jc.getName().getExternalName().replace('.', '_')
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jaroslav@10
|
135 |
).append('_').append(findMethodName(m));
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jaroslav@10
|
136 |
out.append("(arg0");
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jaroslav@10
|
137 |
String space = ",";
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jaroslav@10
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138 |
List<Parameter> args = m.getParameters();
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jaroslav@10
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139 |
for (int index = 1, i = 0; i < args.size(); i++) {
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jaroslav@10
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140 |
out.append(space);
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jaroslav@10
|
141 |
out.append("arg").append(String.valueOf(index));
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jaroslav@10
|
142 |
final String desc = args.get(i).getDescriptor();
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jaroslav@10
|
143 |
if ("D".equals(desc) || "J".equals(desc)) {
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jaroslav@10
|
144 |
index += 2;
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jaroslav@10
|
145 |
} else {
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jaroslav@10
|
146 |
index++;
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jaroslav@10
|
147 |
}
|
|
jaroslav@10
|
148 |
}
|
|
jaroslav@10
|
149 |
out.append(") {").append("\n");
|
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jaroslav@10
|
150 |
final Code code = m.getCode();
|
|
jaroslav@10
|
151 |
int len = code.getMaxLocals();
|
|
jaroslav@10
|
152 |
for (int index = args.size(), i = args.size(); i < len; i++) {
|
|
jaroslav@10
|
153 |
out.append(" var ");
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jaroslav@10
|
154 |
out.append("arg").append(String.valueOf(i + 1)).append(";\n");
|
|
jaroslav@10
|
155 |
}
|
|
jaroslav@0
|
156 |
out.append(";\n var stack = new Array(");
|
|
jaroslav@0
|
157 |
out.append(Integer.toString(code.getMaxStack()));
|
|
jaroslav@0
|
158 |
out.append(");\n");
|
|
jaroslav@0
|
159 |
produceCode(code.getByteCodes());
|
|
jaroslav@0
|
160 |
out.append("}");
|
|
jaroslav@0
|
161 |
}
|
|
jaroslav@0
|
162 |
|
|
jaroslav@0
|
163 |
private void produceCode(byte[] byteCodes) throws IOException {
|
|
jaroslav@10
|
164 |
out.append("\n var gt = 0;\n for(;;) switch(gt) {\n");
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jaroslav@0
|
165 |
for (int i = 0; i < byteCodes.length; i++) {
|
|
jaroslav@0
|
166 |
int prev = i;
|
|
jaroslav@10
|
167 |
out.append(" case " + i).append(": ");
|
|
jaroslav@0
|
168 |
final int c = (byteCodes[i] + 256) % 256;
|
|
jaroslav@0
|
169 |
switch (c) {
|
|
jaroslav@2
|
170 |
case bc_aload_0:
|
|
jaroslav@2
|
171 |
case bc_iload_0:
|
|
jaroslav@2
|
172 |
case bc_lload_0:
|
|
jaroslav@2
|
173 |
case bc_fload_0:
|
|
jaroslav@2
|
174 |
case bc_dload_0:
|
|
jaroslav@0
|
175 |
out.append("stack.push(arg0);");
|
|
jaroslav@0
|
176 |
break;
|
|
jaroslav@2
|
177 |
case bc_aload_1:
|
|
jaroslav@2
|
178 |
case bc_iload_1:
|
|
jaroslav@2
|
179 |
case bc_lload_1:
|
|
jaroslav@2
|
180 |
case bc_fload_1:
|
|
jaroslav@2
|
181 |
case bc_dload_1:
|
|
jaroslav@0
|
182 |
out.append("stack.push(arg1);");
|
|
jaroslav@0
|
183 |
break;
|
|
jaroslav@2
|
184 |
case bc_aload_2:
|
|
jaroslav@2
|
185 |
case bc_iload_2:
|
|
jaroslav@2
|
186 |
case bc_lload_2:
|
|
jaroslav@2
|
187 |
case bc_fload_2:
|
|
jaroslav@2
|
188 |
case bc_dload_2:
|
|
jaroslav@2
|
189 |
out.append("stack.push(arg2);");
|
|
jaroslav@2
|
190 |
break;
|
|
jaroslav@3
|
191 |
case bc_aload_3:
|
|
jaroslav@3
|
192 |
case bc_iload_3:
|
|
jaroslav@3
|
193 |
case bc_lload_3:
|
|
jaroslav@3
|
194 |
case bc_fload_3:
|
|
jaroslav@3
|
195 |
case bc_dload_3:
|
|
jaroslav@3
|
196 |
out.append("stack.push(arg3);");
|
|
jaroslav@3
|
197 |
break;
|
|
jaroslav@3
|
198 |
case bc_iload:
|
|
jaroslav@3
|
199 |
case bc_lload:
|
|
jaroslav@3
|
200 |
case bc_fload:
|
|
jaroslav@3
|
201 |
case bc_dload:
|
|
jaroslav@3
|
202 |
case bc_aload: {
|
|
jaroslav@3
|
203 |
final int indx = (byteCodes[++i] + 256) % 256;
|
|
jaroslav@3
|
204 |
out.append("stack.push(arg").append(indx + ");");
|
|
jaroslav@3
|
205 |
break;
|
|
jaroslav@3
|
206 |
}
|
|
jaroslav@8
|
207 |
case bc_astore_0:
|
|
jaroslav@5
|
208 |
case bc_istore_0:
|
|
jaroslav@5
|
209 |
case bc_lstore_0:
|
|
jaroslav@5
|
210 |
case bc_fstore_0:
|
|
jaroslav@5
|
211 |
case bc_dstore_0:
|
|
jaroslav@5
|
212 |
out.append("arg0 = stack.pop();");
|
|
jaroslav@5
|
213 |
break;
|
|
jaroslav@8
|
214 |
case bc_astore_1:
|
|
jaroslav@5
|
215 |
case bc_istore_1:
|
|
jaroslav@5
|
216 |
case bc_lstore_1:
|
|
jaroslav@5
|
217 |
case bc_fstore_1:
|
|
jaroslav@5
|
218 |
case bc_dstore_1:
|
|
jaroslav@5
|
219 |
out.append("arg1 = stack.pop();");
|
|
jaroslav@5
|
220 |
break;
|
|
jaroslav@8
|
221 |
case bc_astore_2:
|
|
jaroslav@5
|
222 |
case bc_istore_2:
|
|
jaroslav@5
|
223 |
case bc_lstore_2:
|
|
jaroslav@5
|
224 |
case bc_fstore_2:
|
|
jaroslav@5
|
225 |
case bc_dstore_2:
|
|
jaroslav@5
|
226 |
out.append("arg2 = stack.pop();");
|
|
jaroslav@5
|
227 |
break;
|
|
jaroslav@8
|
228 |
case bc_astore_3:
|
|
jaroslav@5
|
229 |
case bc_istore_3:
|
|
jaroslav@5
|
230 |
case bc_lstore_3:
|
|
jaroslav@5
|
231 |
case bc_fstore_3:
|
|
jaroslav@5
|
232 |
case bc_dstore_3:
|
|
jaroslav@5
|
233 |
out.append("arg3 = stack.pop();");
|
|
jaroslav@5
|
234 |
break;
|
|
jaroslav@2
|
235 |
case bc_iadd:
|
|
jaroslav@2
|
236 |
case bc_ladd:
|
|
jaroslav@2
|
237 |
case bc_fadd:
|
|
jaroslav@2
|
238 |
case bc_dadd:
|
|
jaroslav@0
|
239 |
out.append("stack.push(stack.pop() + stack.pop());");
|
|
jaroslav@0
|
240 |
break;
|
|
jaroslav@2
|
241 |
case bc_isub:
|
|
jaroslav@2
|
242 |
case bc_lsub:
|
|
jaroslav@2
|
243 |
case bc_fsub:
|
|
jaroslav@2
|
244 |
case bc_dsub:
|
|
jaroslav@3
|
245 |
out.append("{ var tmp = stack.pop(); stack.push(stack.pop() - tmp); }");
|
|
jaroslav@2
|
246 |
break;
|
|
jaroslav@2
|
247 |
case bc_imul:
|
|
jaroslav@2
|
248 |
case bc_lmul:
|
|
jaroslav@2
|
249 |
case bc_fmul:
|
|
jaroslav@2
|
250 |
case bc_dmul:
|
|
jaroslav@1
|
251 |
out.append("stack.push(stack.pop() * stack.pop());");
|
|
jaroslav@1
|
252 |
break;
|
|
jaroslav@3
|
253 |
case bc_idiv:
|
|
jaroslav@3
|
254 |
case bc_ldiv:
|
|
jaroslav@3
|
255 |
out.append("{ var tmp = stack.pop(); stack.push(Math.floor(stack.pop() / tmp)); }");
|
|
jaroslav@3
|
256 |
break;
|
|
jaroslav@3
|
257 |
case bc_fdiv:
|
|
jaroslav@3
|
258 |
case bc_ddiv:
|
|
jaroslav@3
|
259 |
out.append("{ var tmp = stack.pop(); stack.push(stack.pop() / tmp); }");
|
|
jaroslav@3
|
260 |
break;
|
|
jaroslav@7
|
261 |
case bc_iand:
|
|
jaroslav@7
|
262 |
case bc_land:
|
|
jaroslav@7
|
263 |
out.append("stack.push(stack.pop() & stack.pop());");
|
|
jaroslav@7
|
264 |
break;
|
|
jaroslav@7
|
265 |
case bc_ior:
|
|
jaroslav@7
|
266 |
case bc_lor:
|
|
jaroslav@7
|
267 |
out.append("stack.push(stack.pop() | stack.pop());");
|
|
jaroslav@7
|
268 |
break;
|
|
jaroslav@6
|
269 |
case bc_ixor:
|
|
jaroslav@6
|
270 |
case bc_lxor:
|
|
jaroslav@6
|
271 |
out.append("stack.push(stack.pop() ^ stack.pop());");
|
|
jaroslav@6
|
272 |
break;
|
|
jaroslav@5
|
273 |
case bc_iinc: {
|
|
jaroslav@5
|
274 |
final int varIndx = (byteCodes[++i] + 256) % 256;
|
|
jaroslav@5
|
275 |
final int incrBy = (byteCodes[++i] + 256) % 256;
|
|
jaroslav@5
|
276 |
if (incrBy == 1) {
|
|
jaroslav@5
|
277 |
out.append("arg" + varIndx).append("++;");
|
|
jaroslav@5
|
278 |
} else {
|
|
jaroslav@5
|
279 |
out.append("arg" + varIndx).append(" += " + incrBy).append(";");
|
|
jaroslav@5
|
280 |
}
|
|
jaroslav@5
|
281 |
break;
|
|
jaroslav@5
|
282 |
}
|
|
jaroslav@10
|
283 |
case bc_return:
|
|
jaroslav@10
|
284 |
out.append("return;");
|
|
jaroslav@10
|
285 |
break;
|
|
jaroslav@2
|
286 |
case bc_ireturn:
|
|
jaroslav@2
|
287 |
case bc_lreturn:
|
|
jaroslav@2
|
288 |
case bc_freturn:
|
|
jaroslav@2
|
289 |
case bc_dreturn:
|
|
jaroslav@10
|
290 |
case bc_areturn:
|
|
jaroslav@0
|
291 |
out.append("return stack.pop();");
|
|
jaroslav@1
|
292 |
break;
|
|
jaroslav@2
|
293 |
case bc_i2l:
|
|
jaroslav@2
|
294 |
case bc_i2f:
|
|
jaroslav@2
|
295 |
case bc_i2d:
|
|
jaroslav@2
|
296 |
case bc_l2i:
|
|
jaroslav@3
|
297 |
// max int check?
|
|
jaroslav@2
|
298 |
case bc_l2f:
|
|
jaroslav@2
|
299 |
case bc_l2d:
|
|
jaroslav@3
|
300 |
case bc_f2d:
|
|
jaroslav@3
|
301 |
case bc_d2f:
|
|
jaroslav@3
|
302 |
out.append("/* number conversion */");
|
|
jaroslav@3
|
303 |
break;
|
|
jaroslav@2
|
304 |
case bc_f2i:
|
|
jaroslav@2
|
305 |
case bc_f2l:
|
|
jaroslav@2
|
306 |
case bc_d2i:
|
|
jaroslav@2
|
307 |
case bc_d2l:
|
|
jaroslav@3
|
308 |
out.append("stack.push(Math.floor(stack.pop()));");
|
|
jaroslav@3
|
309 |
break;
|
|
jaroslav@2
|
310 |
case bc_i2b:
|
|
jaroslav@2
|
311 |
case bc_i2c:
|
|
jaroslav@2
|
312 |
case bc_i2s:
|
|
jaroslav@2
|
313 |
out.append("/* number conversion */");
|
|
jaroslav@2
|
314 |
break;
|
|
jaroslav@4
|
315 |
case bc_iconst_0:
|
|
jaroslav@4
|
316 |
case bc_dconst_0:
|
|
jaroslav@4
|
317 |
case bc_lconst_0:
|
|
jaroslav@4
|
318 |
case bc_fconst_0:
|
|
jaroslav@4
|
319 |
out.append("stack.push(0);");
|
|
jaroslav@4
|
320 |
break;
|
|
jaroslav@4
|
321 |
case bc_iconst_1:
|
|
jaroslav@4
|
322 |
case bc_lconst_1:
|
|
jaroslav@4
|
323 |
case bc_fconst_1:
|
|
jaroslav@4
|
324 |
case bc_dconst_1:
|
|
jaroslav@4
|
325 |
out.append("stack.push(1);");
|
|
jaroslav@4
|
326 |
break;
|
|
jaroslav@4
|
327 |
case bc_iconst_2:
|
|
jaroslav@4
|
328 |
case bc_fconst_2:
|
|
jaroslav@4
|
329 |
out.append("stack.push(2);");
|
|
jaroslav@4
|
330 |
break;
|
|
jaroslav@4
|
331 |
case bc_iconst_3:
|
|
jaroslav@4
|
332 |
out.append("stack.push(3);");
|
|
jaroslav@4
|
333 |
break;
|
|
jaroslav@4
|
334 |
case bc_iconst_4:
|
|
jaroslav@4
|
335 |
out.append("stack.push(4);");
|
|
jaroslav@4
|
336 |
break;
|
|
jaroslav@4
|
337 |
case bc_iconst_5:
|
|
jaroslav@4
|
338 |
out.append("stack.push(5);");
|
|
jaroslav@4
|
339 |
break;
|
|
jaroslav@8
|
340 |
case bc_ldc_w:
|
|
jaroslav@8
|
341 |
case bc_ldc2_w: {
|
|
jaroslav@8
|
342 |
int indx = readIntArg(byteCodes, i);
|
|
jaroslav@8
|
343 |
CPEntry entry = jc.getConstantPool().get(indx);
|
|
jaroslav@8
|
344 |
i += 2;
|
|
jaroslav@8
|
345 |
out.append("stack.push(" + entry.getValue() + ");");
|
|
jaroslav@8
|
346 |
break;
|
|
jaroslav@8
|
347 |
}
|
|
jaroslav@4
|
348 |
case bc_if_icmpeq: {
|
|
jaroslav@4
|
349 |
i = generateIf(byteCodes, i, "==");
|
|
jaroslav@4
|
350 |
break;
|
|
jaroslav@4
|
351 |
}
|
|
jaroslav@7
|
352 |
case bc_ifeq: {
|
|
jaroslav@7
|
353 |
int indx = i + readIntArg(byteCodes, i);
|
|
jaroslav@7
|
354 |
out.append("if (stack.pop() == 0) { gt = " + indx);
|
|
jaroslav@7
|
355 |
out.append("; continue; }");
|
|
jaroslav@7
|
356 |
i += 2;
|
|
jaroslav@7
|
357 |
break;
|
|
jaroslav@7
|
358 |
}
|
|
jaroslav@16
|
359 |
case bc_ifnonnull: {
|
|
jaroslav@16
|
360 |
int indx = i + readIntArg(byteCodes, i);
|
|
jaroslav@16
|
361 |
out.append("if (stack.pop()) { gt = " + indx);
|
|
jaroslav@16
|
362 |
out.append("; continue; }");
|
|
jaroslav@16
|
363 |
i += 2;
|
|
jaroslav@16
|
364 |
break;
|
|
jaroslav@16
|
365 |
}
|
|
jaroslav@16
|
366 |
case bc_ifnull: {
|
|
jaroslav@16
|
367 |
int indx = i + readIntArg(byteCodes, i);
|
|
jaroslav@16
|
368 |
out.append("if (!stack.pop()) { gt = " + indx);
|
|
jaroslav@16
|
369 |
out.append("; continue; }");
|
|
jaroslav@16
|
370 |
i += 2;
|
|
jaroslav@16
|
371 |
break;
|
|
jaroslav@16
|
372 |
}
|
|
jaroslav@4
|
373 |
case bc_if_icmpne:
|
|
jaroslav@4
|
374 |
i = generateIf(byteCodes, i, "!=");
|
|
jaroslav@4
|
375 |
break;
|
|
jaroslav@4
|
376 |
case bc_if_icmplt:
|
|
jaroslav@4
|
377 |
i = generateIf(byteCodes, i, ">");
|
|
jaroslav@4
|
378 |
break;
|
|
jaroslav@4
|
379 |
case bc_if_icmple:
|
|
jaroslav@4
|
380 |
i = generateIf(byteCodes, i, ">=");
|
|
jaroslav@4
|
381 |
break;
|
|
jaroslav@4
|
382 |
case bc_if_icmpgt:
|
|
jaroslav@4
|
383 |
i = generateIf(byteCodes, i, "<");
|
|
jaroslav@4
|
384 |
break;
|
|
jaroslav@4
|
385 |
case bc_if_icmpge:
|
|
jaroslav@4
|
386 |
i = generateIf(byteCodes, i, "<=");
|
|
jaroslav@4
|
387 |
break;
|
|
jaroslav@5
|
388 |
case bc_goto: {
|
|
jaroslav@5
|
389 |
int indx = i + readIntArg(byteCodes, i);
|
|
jaroslav@5
|
390 |
out.append("gt = " + indx).append("; continue;");
|
|
jaroslav@5
|
391 |
i += 2;
|
|
jaroslav@5
|
392 |
break;
|
|
jaroslav@5
|
393 |
}
|
|
jaroslav@15
|
394 |
case bc_invokeinterface:
|
|
jaroslav@12
|
395 |
case bc_invokevirtual:
|
|
jaroslav@12
|
396 |
i = invokeVirtualMethod(byteCodes, i);
|
|
jaroslav@12
|
397 |
break;
|
|
jaroslav@10
|
398 |
case bc_invokespecial:
|
|
jaroslav@10
|
399 |
i = invokeStaticMethod(byteCodes, i, false);
|
|
jaroslav@4
|
400 |
break;
|
|
jaroslav@10
|
401 |
case bc_invokestatic:
|
|
jaroslav@10
|
402 |
i = invokeStaticMethod(byteCodes, i, true);
|
|
jaroslav@10
|
403 |
break;
|
|
jaroslav@8
|
404 |
case bc_new: {
|
|
jaroslav@8
|
405 |
int indx = readIntArg(byteCodes, i);
|
|
jaroslav@8
|
406 |
CPClassInfo ci = jc.getConstantPool().getClass(indx);
|
|
jaroslav@8
|
407 |
out.append("stack.push(");
|
|
jaroslav@8
|
408 |
out.append("new ").append(ci.getClassName().getExternalName().replace('.','_'));
|
|
jaroslav@10
|
409 |
out.append(");");
|
|
jaroslav@8
|
410 |
i += 2;
|
|
jaroslav@8
|
411 |
break;
|
|
jaroslav@8
|
412 |
}
|
|
jaroslav@8
|
413 |
case bc_dup:
|
|
jaroslav@8
|
414 |
out.append("stack.push(stack[stack.length - 1]);");
|
|
jaroslav@8
|
415 |
break;
|
|
jaroslav@8
|
416 |
case bc_bipush:
|
|
jaroslav@8
|
417 |
out.append("stack.push(" + byteCodes[++i] + ");");
|
|
jaroslav@8
|
418 |
break;
|
|
jaroslav@8
|
419 |
case bc_getfield: {
|
|
jaroslav@8
|
420 |
int indx = readIntArg(byteCodes, i);
|
|
jaroslav@8
|
421 |
CPFieldInfo fi = (CPFieldInfo) jc.getConstantPool().get(indx);
|
|
jaroslav@8
|
422 |
out.append(" stack.push(stack.pop().").append(fi.getFieldName()).append(");");
|
|
jaroslav@8
|
423 |
i += 2;
|
|
jaroslav@8
|
424 |
break;
|
|
jaroslav@8
|
425 |
}
|
|
jaroslav@9
|
426 |
case bc_getstatic: {
|
|
jaroslav@9
|
427 |
int indx = readIntArg(byteCodes, i);
|
|
jaroslav@9
|
428 |
CPFieldInfo fi = (CPFieldInfo) jc.getConstantPool().get(indx);
|
|
jaroslav@9
|
429 |
out.append("stack.push(").append(fi.getClassName().getExternalName().replace('.', '_'));
|
|
jaroslav@9
|
430 |
out.append('_').append(fi.getFieldName()).append(");");
|
|
jaroslav@9
|
431 |
i += 2;
|
|
jaroslav@9
|
432 |
break;
|
|
jaroslav@9
|
433 |
}
|
|
jaroslav@9
|
434 |
case bc_putstatic: {
|
|
jaroslav@9
|
435 |
int indx = readIntArg(byteCodes, i);
|
|
jaroslav@9
|
436 |
CPFieldInfo fi = (CPFieldInfo) jc.getConstantPool().get(indx);
|
|
jaroslav@9
|
437 |
out.append(fi.getClassName().getExternalName().replace('.', '_'));
|
|
jaroslav@9
|
438 |
out.append('_').append(fi.getFieldName()).append(" = stack.pop();");
|
|
jaroslav@9
|
439 |
i += 2;
|
|
jaroslav@9
|
440 |
break;
|
|
jaroslav@9
|
441 |
}
|
|
jaroslav@10
|
442 |
case bc_putfield: {
|
|
jaroslav@10
|
443 |
int indx = readIntArg(byteCodes, i);
|
|
jaroslav@10
|
444 |
CPFieldInfo fi = (CPFieldInfo) jc.getConstantPool().get(indx);
|
|
jaroslav@10
|
445 |
out.append("{ var v = stack.pop(); stack.pop().")
|
|
jaroslav@10
|
446 |
.append(fi.getFieldName()).append(" = v; }");
|
|
jaroslav@10
|
447 |
i += 2;
|
|
jaroslav@10
|
448 |
break;
|
|
jaroslav@10
|
449 |
}
|
|
jaroslav@17
|
450 |
case bc_instanceof: {
|
|
jaroslav@17
|
451 |
int indx = readIntArg(byteCodes, i);
|
|
jaroslav@17
|
452 |
CPClassInfo ci = jc.getConstantPool().getClass(indx);
|
|
jaroslav@17
|
453 |
out.append("stack.push(stack.pop().$instOf_")
|
|
jaroslav@17
|
454 |
.append(ci.getClassName().getExternalName().replace('.', '_'))
|
|
jaroslav@17
|
455 |
.append(" ? 1 : 0);");
|
|
jaroslav@17
|
456 |
i += 2;
|
|
jaroslav@17
|
457 |
}
|
|
jaroslav@8
|
458 |
|
|
jaroslav@0
|
459 |
}
|
|
jaroslav@3
|
460 |
out.append(" /*");
|
|
jaroslav@0
|
461 |
for (int j = prev; j <= i; j++) {
|
|
jaroslav@0
|
462 |
out.append(" ");
|
|
jaroslav@0
|
463 |
final int cc = (byteCodes[j] + 256) % 256;
|
|
jaroslav@0
|
464 |
out.append(Integer.toString(cc));
|
|
jaroslav@0
|
465 |
}
|
|
jaroslav@0
|
466 |
out.append("*/\n");
|
|
jaroslav@0
|
467 |
}
|
|
jaroslav@10
|
468 |
out.append(" }\n");
|
|
jaroslav@4
|
469 |
}
|
|
jaroslav@4
|
470 |
|
|
jaroslav@4
|
471 |
private int generateIf(byte[] byteCodes, int i, final String test) throws IOException {
|
|
jaroslav@4
|
472 |
int indx = i + readIntArg(byteCodes, i);
|
|
jaroslav@4
|
473 |
out.append("if (stack.pop() ").append(test).append(" stack.pop()) { gt = " + indx);
|
|
jaroslav@4
|
474 |
out.append("; continue; }");
|
|
jaroslav@4
|
475 |
return i + 2;
|
|
jaroslav@4
|
476 |
}
|
|
jaroslav@4
|
477 |
|
|
jaroslav@4
|
478 |
private int readIntArg(byte[] byteCodes, int offsetInstruction) {
|
|
jaroslav@5
|
479 |
final int indxHi = byteCodes[offsetInstruction + 1] << 8;
|
|
jaroslav@5
|
480 |
final int indxLo = byteCodes[offsetInstruction + 2];
|
|
jaroslav@5
|
481 |
return (indxHi & 0xffffff00) | (indxLo & 0xff);
|
|
jaroslav@4
|
482 |
}
|
|
jaroslav@4
|
483 |
|
|
jaroslav@4
|
484 |
private static int countArgs(String descriptor, boolean[] hasReturnType, StringBuilder sig) {
|
|
jaroslav@4
|
485 |
int cnt = 0;
|
|
jaroslav@4
|
486 |
int i = 0;
|
|
jaroslav@4
|
487 |
Boolean count = null;
|
|
jaroslav@10
|
488 |
int firstPos = sig.length();
|
|
jaroslav@4
|
489 |
while (i < descriptor.length()) {
|
|
jaroslav@4
|
490 |
char ch = descriptor.charAt(i++);
|
|
jaroslav@4
|
491 |
switch (ch) {
|
|
jaroslav@4
|
492 |
case '(':
|
|
jaroslav@4
|
493 |
count = true;
|
|
jaroslav@4
|
494 |
continue;
|
|
jaroslav@4
|
495 |
case ')':
|
|
jaroslav@4
|
496 |
count = false;
|
|
jaroslav@4
|
497 |
continue;
|
|
jaroslav@4
|
498 |
case 'B':
|
|
jaroslav@4
|
499 |
case 'C':
|
|
jaroslav@4
|
500 |
case 'D':
|
|
jaroslav@4
|
501 |
case 'F':
|
|
jaroslav@4
|
502 |
case 'I':
|
|
jaroslav@4
|
503 |
case 'J':
|
|
jaroslav@4
|
504 |
case 'S':
|
|
jaroslav@4
|
505 |
case 'Z':
|
|
jaroslav@4
|
506 |
if (count) {
|
|
jaroslav@4
|
507 |
cnt++;
|
|
jaroslav@4
|
508 |
sig.append(ch);
|
|
jaroslav@4
|
509 |
} else {
|
|
jaroslav@4
|
510 |
hasReturnType[0] = true;
|
|
jaroslav@10
|
511 |
sig.insert(firstPos, ch);
|
|
jaroslav@4
|
512 |
}
|
|
jaroslav@4
|
513 |
continue;
|
|
jaroslav@4
|
514 |
case 'V':
|
|
jaroslav@4
|
515 |
assert !count;
|
|
jaroslav@4
|
516 |
hasReturnType[0] = false;
|
|
jaroslav@10
|
517 |
sig.insert(firstPos, 'V');
|
|
jaroslav@4
|
518 |
continue;
|
|
jaroslav@4
|
519 |
case 'L':
|
|
jaroslav@16
|
520 |
int next = descriptor.indexOf(';', i);
|
|
jaroslav@4
|
521 |
if (count) {
|
|
jaroslav@4
|
522 |
cnt++;
|
|
jaroslav@16
|
523 |
sig.append(ch);
|
|
jaroslav@16
|
524 |
sig.append(descriptor.substring(i, next).replace('/', '_'));
|
|
jaroslav@4
|
525 |
} else {
|
|
jaroslav@16
|
526 |
sig.insert(firstPos, descriptor.substring(i, next).replace('/', '_'));
|
|
jaroslav@16
|
527 |
sig.insert(firstPos, ch);
|
|
jaroslav@4
|
528 |
hasReturnType[0] = true;
|
|
jaroslav@4
|
529 |
}
|
|
jaroslav@16
|
530 |
i = next + 1;
|
|
jaroslav@4
|
531 |
continue;
|
|
jaroslav@4
|
532 |
case '[':
|
|
jaroslav@4
|
533 |
//arrays++;
|
|
jaroslav@4
|
534 |
continue;
|
|
jaroslav@4
|
535 |
default:
|
|
jaroslav@4
|
536 |
break; // invalid character
|
|
jaroslav@4
|
537 |
}
|
|
jaroslav@4
|
538 |
}
|
|
jaroslav@4
|
539 |
return cnt;
|
|
jaroslav@0
|
540 |
}
|
|
jaroslav@9
|
541 |
|
|
jaroslav@9
|
542 |
private void generateStaticField(Variable v) throws IOException {
|
|
jaroslav@9
|
543 |
out.append("\nvar ")
|
|
jaroslav@9
|
544 |
.append(jc.getName().getExternalName().replace('.', '_'))
|
|
jaroslav@9
|
545 |
.append('_').append(v.getName()).append(" = 0;");
|
|
jaroslav@9
|
546 |
}
|
|
jaroslav@10
|
547 |
|
|
jaroslav@10
|
548 |
private String findMethodName(Method m) {
|
|
jaroslav@10
|
549 |
StringBuilder out = new StringBuilder();
|
|
jaroslav@10
|
550 |
if ("<init>".equals(m.getName())) { // NOI18N
|
|
jaroslav@10
|
551 |
out.append("consV"); // NOI18N
|
|
jaroslav@10
|
552 |
} else {
|
|
jaroslav@10
|
553 |
out.append(m.getName());
|
|
jaroslav@16
|
554 |
outType(m.getReturnType(), out);
|
|
jaroslav@10
|
555 |
}
|
|
jaroslav@10
|
556 |
List<Parameter> args = m.getParameters();
|
|
jaroslav@10
|
557 |
for (Parameter t : args) {
|
|
jaroslav@16
|
558 |
outType(t.getDescriptor(), out);
|
|
jaroslav@10
|
559 |
}
|
|
jaroslav@10
|
560 |
return out.toString();
|
|
jaroslav@10
|
561 |
}
|
|
jaroslav@10
|
562 |
|
|
jaroslav@10
|
563 |
private String findMethodName(CPMethodInfo mi, int[] cnt, boolean[] hasReturn) {
|
|
jaroslav@10
|
564 |
StringBuilder name = new StringBuilder();
|
|
jaroslav@10
|
565 |
if ("<init>".equals(mi.getName())) { // NOI18N
|
|
jaroslav@10
|
566 |
name.append("cons"); // NOI18N
|
|
jaroslav@10
|
567 |
} else {
|
|
jaroslav@10
|
568 |
name.append(mi.getName());
|
|
jaroslav@10
|
569 |
}
|
|
jaroslav@10
|
570 |
cnt[0] = countArgs(mi.getDescriptor(), hasReturn, name);
|
|
jaroslav@10
|
571 |
return name.toString();
|
|
jaroslav@10
|
572 |
}
|
|
jaroslav@10
|
573 |
|
|
jaroslav@10
|
574 |
private int invokeStaticMethod(byte[] byteCodes, int i, boolean isStatic)
|
|
jaroslav@10
|
575 |
throws IOException {
|
|
jaroslav@10
|
576 |
int methodIndex = readIntArg(byteCodes, i);
|
|
jaroslav@10
|
577 |
CPMethodInfo mi = (CPMethodInfo) jc.getConstantPool().get(methodIndex);
|
|
jaroslav@10
|
578 |
boolean[] hasReturn = { false };
|
|
jaroslav@10
|
579 |
int[] cnt = { 0 };
|
|
jaroslav@10
|
580 |
String mn = findMethodName(mi, cnt, hasReturn);
|
|
jaroslav@11
|
581 |
out.append("{ ");
|
|
jaroslav@11
|
582 |
for (int j = cnt[0] - 1; j >= 0; j--) {
|
|
jaroslav@11
|
583 |
out.append("var v" + j).append(" = stack.pop(); ");
|
|
jaroslav@11
|
584 |
}
|
|
jaroslav@11
|
585 |
|
|
jaroslav@10
|
586 |
if (hasReturn[0]) {
|
|
jaroslav@10
|
587 |
out.append("stack.push(");
|
|
jaroslav@10
|
588 |
}
|
|
jaroslav@10
|
589 |
out.append(mi.getClassName().getInternalName().replace('/', '_'));
|
|
jaroslav@10
|
590 |
out.append('_');
|
|
jaroslav@10
|
591 |
out.append(mn);
|
|
jaroslav@10
|
592 |
out.append('(');
|
|
jaroslav@10
|
593 |
String sep = "";
|
|
jaroslav@10
|
594 |
if (!isStatic) {
|
|
jaroslav@10
|
595 |
out.append("stack.pop()");
|
|
jaroslav@10
|
596 |
sep = ", ";
|
|
jaroslav@10
|
597 |
}
|
|
jaroslav@10
|
598 |
for (int j = 0; j < cnt[0]; j++) {
|
|
jaroslav@10
|
599 |
out.append(sep);
|
|
jaroslav@11
|
600 |
out.append("v" + j);
|
|
jaroslav@10
|
601 |
sep = ", ";
|
|
jaroslav@10
|
602 |
}
|
|
jaroslav@10
|
603 |
out.append(")");
|
|
jaroslav@10
|
604 |
if (hasReturn[0]) {
|
|
jaroslav@10
|
605 |
out.append(")");
|
|
jaroslav@10
|
606 |
}
|
|
jaroslav@11
|
607 |
out.append("; }");
|
|
jaroslav@10
|
608 |
i += 2;
|
|
jaroslav@10
|
609 |
return i;
|
|
jaroslav@10
|
610 |
}
|
|
jaroslav@12
|
611 |
private int invokeVirtualMethod(byte[] byteCodes, int i)
|
|
jaroslav@12
|
612 |
throws IOException {
|
|
jaroslav@12
|
613 |
int methodIndex = readIntArg(byteCodes, i);
|
|
jaroslav@12
|
614 |
CPMethodInfo mi = (CPMethodInfo) jc.getConstantPool().get(methodIndex);
|
|
jaroslav@12
|
615 |
boolean[] hasReturn = { false };
|
|
jaroslav@12
|
616 |
int[] cnt = { 0 };
|
|
jaroslav@12
|
617 |
String mn = findMethodName(mi, cnt, hasReturn);
|
|
jaroslav@12
|
618 |
out.append("{ ");
|
|
jaroslav@12
|
619 |
for (int j = cnt[0] - 1; j >= 0; j--) {
|
|
jaroslav@12
|
620 |
out.append("var v" + j).append(" = stack.pop(); ");
|
|
jaroslav@12
|
621 |
}
|
|
jaroslav@12
|
622 |
out.append("var self = stack.pop(); ");
|
|
jaroslav@12
|
623 |
if (hasReturn[0]) {
|
|
jaroslav@12
|
624 |
out.append("stack.push(");
|
|
jaroslav@12
|
625 |
}
|
|
jaroslav@12
|
626 |
out.append("self.");
|
|
jaroslav@12
|
627 |
out.append(mn);
|
|
jaroslav@12
|
628 |
out.append('(');
|
|
jaroslav@12
|
629 |
out.append("self");
|
|
jaroslav@12
|
630 |
for (int j = 0; j < cnt[0]; j++) {
|
|
jaroslav@12
|
631 |
out.append(", ");
|
|
jaroslav@12
|
632 |
out.append("v" + j);
|
|
jaroslav@12
|
633 |
}
|
|
jaroslav@12
|
634 |
out.append(")");
|
|
jaroslav@12
|
635 |
if (hasReturn[0]) {
|
|
jaroslav@12
|
636 |
out.append(")");
|
|
jaroslav@12
|
637 |
}
|
|
jaroslav@12
|
638 |
out.append("; }");
|
|
jaroslav@12
|
639 |
i += 2;
|
|
jaroslav@12
|
640 |
return i;
|
|
jaroslav@12
|
641 |
}
|
|
jaroslav@16
|
642 |
|
|
jaroslav@16
|
643 |
private void outType(final String d, StringBuilder out) {
|
|
jaroslav@16
|
644 |
if (d.charAt(0) == 'L') {
|
|
jaroslav@16
|
645 |
assert d.charAt(d.length() - 1) == ';';
|
|
jaroslav@16
|
646 |
out.append(d.replace('/', '_').substring(0, d.length() - 1));
|
|
jaroslav@16
|
647 |
} else {
|
|
jaroslav@16
|
648 |
out.append(d);
|
|
jaroslav@16
|
649 |
}
|
|
jaroslav@16
|
650 |
}
|
|
jaroslav@0
|
651 |
}
|