| Methods Summary |
|---|
| public static void | _main(java.lang.String[] argv)Default _main method
JavaClass java_class;
String name = argv[0];
if((java_class = Repository.lookupClass(name)) == null)
java_class = new ClassParser(name).parse(); // May throw IOException
BCELifier bcelifier = new BCELifier(java_class, System.out);
bcelifier.start();
|
| static java.lang.String | printArgumentTypes(com.sun.org.apache.bcel.internal.generic.Type[] arg_types)
if(arg_types.length == 0)
return "Type.NO_ARGS";
StringBuffer args = new StringBuffer();
for(int i=0; i < arg_types.length; i++) {
args.append(printType(arg_types[i]));
if(i < arg_types.length - 1)
args.append(", ");
}
return "new Type[] { " + args.toString() + " }";
|
| private void | printCreate()
_out.println(" public void create(OutputStream out) throws IOException {");
Field[] fields = _clazz.getFields();
if(fields.length > 0) {
_out.println(" createFields();");
}
Method[] methods = _clazz.getMethods();
for(int i=0; i < methods.length; i++) {
_out.println(" createMethod_" + i + "();");
}
_out.println(" _cg.getJavaClass().dump(out);");
_out.println(" }\n");
|
| static java.lang.String | printFlags(int flags)
return printFlags(flags, false);
|
| static java.lang.String | printFlags(int flags, boolean for_class)
if(flags == 0)
return "0";
StringBuffer buf = new StringBuffer();
for(int i=0, pow=1; i <= Constants.MAX_ACC_FLAG; i++) {
if((flags & pow) != 0) {
if((pow == Constants.ACC_SYNCHRONIZED) && for_class)
buf.append("ACC_SUPER | ");
else
buf.append("ACC_" + Constants.ACCESS_NAMES[i].toUpperCase() + " | ");
}
pow <<= 1;
}
String str = buf.toString();
return str.substring(0, str.length() - 3);
|
| private void | printMain()
String class_name = _clazz.getClassName();
_out.println(" public static void _main(String[] args) throws Exception {");
_out.println(" " + class_name + "Creator creator = new " +
class_name + "Creator();");
_out.println(" creator.create(new FileOutputStream(\"" + class_name +
".class\"));");
_out.println(" }");
|
| static java.lang.String | printType(com.sun.org.apache.bcel.internal.generic.Type type)
return printType(type.getSignature());
|
| static java.lang.String | printType(java.lang.String signature)
Type type = Type.getType(signature);
byte t = type.getType();
if(t <= Constants.T_VOID) {
return "Type." + Constants.TYPE_NAMES[t].toUpperCase();
} else if(type.toString().equals("java.lang.String")) {
return "Type.STRING";
} else if(type.toString().equals("java.lang.Object")) {
return "Type.OBJECT";
} else if(type.toString().equals("java.lang.StringBuffer")) {
return "Type.STRINGBUFFER";
} else if(type instanceof ArrayType) {
ArrayType at = (ArrayType)type;
return "new ArrayType(" + printType(at.getBasicType()) +
", " + at.getDimensions() + ")";
} else {
return "new ObjectType(\"" + Utility.signatureToString(signature, false) +
"\")";
}
|
| public void | start()Start Java code generation
visitJavaClass(_clazz);
_out.flush();
|
| public void | visitField(com.sun.org.apache.bcel.internal.classfile.Field field)
_out.println("\n field = new FieldGen(" +
printFlags(field.getAccessFlags()) +
", " + printType(field.getSignature()) + ", \"" +
field.getName() + "\", _cp);");
ConstantValue cv = field.getConstantValue();
if(cv != null) {
String value = cv.toString();
_out.println(" field.setInitValue(" + value + ")");
}
_out.println(" _cg.addField(field.getField());");
|
| public void | visitJavaClass(com.sun.org.apache.bcel.internal.classfile.JavaClass clazz)
String class_name = clazz.getClassName();
String super_name = clazz.getSuperclassName();
String package_name = clazz.getPackageName();
String inter = Utility.printArray(clazz.getInterfaceNames(),
false, true);
if(!"".equals(package_name)) {
class_name = class_name.substring(package_name.length() + 1);
_out.println("package " + package_name + ";\n");
}
_out.println("import com.sun.org.apache.bcel.internal.generic.*;");
_out.println("import com.sun.org.apache.bcel.internal.classfile.*;");
_out.println("import com.sun.org.apache.bcel.internal.*;");
_out.println("import java.io.*;\n");
_out.println("public class " + class_name + "Creator implements Constants {");
_out.println(" private InstructionFactory _factory;");
_out.println(" private ConstantPoolGen _cp;");
_out.println(" private ClassGen _cg;\n");
_out.println(" public " + class_name + "Creator() {");
_out.println(" _cg = new ClassGen(\"" +
(("".equals(package_name))? class_name :
package_name + "." + class_name) +
"\", \"" + super_name + "\", " +
"\"" + clazz.getSourceFileName() + "\", " +
printFlags(clazz.getAccessFlags(), true) + ", " +
"new String[] { " + inter + " });\n");
_out.println(" _cp = _cg.getConstantPool();");
_out.println(" _factory = new InstructionFactory(_cg, _cp);");
_out.println(" }\n");
printCreate();
Field[] fields = clazz.getFields();
if(fields.length > 0) {
_out.println(" private void createFields() {");
_out.println(" FieldGen field;");
for(int i=0; i < fields.length; i++) {
fields[i].accept(this);
}
_out.println(" }\n");
}
Method[] methods = clazz.getMethods();
for(int i=0; i < methods.length; i++) {
_out.println(" private void createMethod_" + i + "() {");
methods[i].accept(this);
_out.println(" }\n");
}
printMain();
_out.println("}");
|
| public void | visitMethod(com.sun.org.apache.bcel.internal.classfile.Method method)
MethodGen mg = new MethodGen(method, _clazz.getClassName(), _cp);
Type result_type = mg.getReturnType();
Type[] arg_types = mg.getArgumentTypes();
_out.println(" InstructionList il = new InstructionList();");
_out.println(" MethodGen method = new MethodGen(" +
printFlags(method.getAccessFlags()) +
", " + printType(result_type) +
", " + printArgumentTypes(arg_types) + ", " +
"new String[] { " +
Utility.printArray(mg.getArgumentNames(), false, true) +
" }, \"" + method.getName() + "\", \"" +
_clazz.getClassName() + "\", il, _cp);\n");
BCELFactory factory = new BCELFactory(mg, _out);
factory.start();
_out.println(" method.setMaxStack();");
_out.println(" method.setMaxLocals();");
_out.println(" _cg.addMethod(method.getMethod());");
_out.println(" il.dispose();");
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