57 lines
2.1 KiB
Java
57 lines
2.1 KiB
Java
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package bcelifier;
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import org.apache.bcel.generic.*;
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import org.apache.bcel.classfile.*;
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import org.apache.bcel.*;
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import java.io.*;
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public class IntLiteralCreator implements Constants {
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private InstructionFactory _factory;
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private ConstantPoolGen _cp;
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private ClassGen _cg;
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public IntLiteralCreator() {
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_cg = new ClassGen("bcelifier.IntLiteral", "java.lang.Object", "IntLiteral.java", ACC_PUBLIC | ACC_SUPER, new String[] { });
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_cp = _cg.getConstantPool();
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_factory = new InstructionFactory(_cg, _cp);
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}
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public void create(OutputStream out) throws IOException {
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createMethod_0();
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createMethod_1();
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_cg.getJavaClass().dump(out);
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}
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private void createMethod_0() {
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InstructionList il = new InstructionList();
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MethodGen method = new MethodGen(ACC_PUBLIC, Type.VOID, Type.NO_ARGS, new String[] { }, "<init>", "bcelifier.IntLiteral", il, _cp);
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InstructionHandle ih_0 = il.append(_factory.createLoad(Type.OBJECT, 0));
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il.append(_factory.createInvoke("java.lang.Object", "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
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InstructionHandle ih_4 = il.append(_factory.createReturn(Type.VOID));
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method.setMaxStack();
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method.setMaxLocals();
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_cg.addMethod(method.getMethod());
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il.dispose();
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}
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private void createMethod_1() {
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InstructionList il = new InstructionList();
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MethodGen method = new MethodGen(0, new ObjectType("java.lang.Integer"), Type.NO_ARGS, new String[] { }, "methode", "bcelifier.IntLiteral", il, _cp);
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InstructionHandle ih_0 = il.append(new PUSH(_cp, 50000));
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il.append(_factory.createInvoke("java.lang.Integer", "valueOf", new ObjectType("java.lang.Integer"), new Type[] { Type.INT }, Constants.INVOKESTATIC));
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InstructionHandle ih_5 = il.append(_factory.createReturn(Type.OBJECT));
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method.setMaxStack();
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method.setMaxLocals();
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_cg.addMethod(method.getMethod());
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il.dispose();
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}
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public static void main(String[] args) throws Exception {
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bcelifier.IntLiteralCreator creator = new bcelifier.IntLiteralCreator();
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creator.create(new FileOutputStream("bcelifier.IntLiteral.class"));
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}
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}
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