Examples of serp.bytecode.Code.dup()

serp.bytecode.Code.dup()
The dup opcode.

        // new instance factory
        m = bc.declareMethod("newInstance", ProxyCalendar.class, null); 
        m.makePublic();
        code = m.getCode(true);
        code.anew().setType(bc); 
        code.dup();
        code.invokespecial().setMethod("<init>", void.class, null);
        code.areturn();
        code.calculateMaxStack();
        code.calculateMaxLocals();

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            new Class[] { Object.class });
        m.makePublic();
        Code code = m.getCode(true);


        code.anew().setType(type);
        code.dup();
        Class[] params = cons.getParameterTypes();
        if (params.length == 1) {
            code.aload().setParam(0);
            code.checkcast().setType(params[0]);
        }

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        m = bc.declareMethod("newInstance", ProxyBean.class, 
            new Class[] { Object.class }); 
        m.makePublic();
        code = m.getCode(true);
        code.anew().setType(bc); 
        code.dup();
        if (params.length == 1) {
            code.aload().setParam(0);
            code.checkcast().setType(params[0]);
        }
        code.invokespecial().setMethod("<init>", void.class, params);

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        else {
            // return <versionField>;
            Class wrapper = toPrimitiveWrapper(versionField);
            if (wrapper != versionField.getDeclaredType()) {
                code.anew().setType(wrapper);
                code.dup();
            }
            loadManagedInstance(code, false);
            addGetManagedValueCode(code, versionField);
            if (wrapper != versionField.getDeclaredType())
                code.invokespecial().setMethod(wrapper, "<init>", void.class,

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        // pcFieldNames = new String[] { "<name1>", "<name2>", ... };
        FieldMetaData[] fmds = _meta.getDeclaredFields();
        code.constant().setValue(fmds.length);
        code.anewarray().setType(String.class);
        for (int i = 0; i < fmds.length; i++) {
            code.dup();
            code.constant().setValue(i);
            code.constant().setValue(fmds[i].getName());
            code.aastore();
        }
        code.putstatic().setField(PRE + "FieldNames", String[].class);

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        // pcFieldTypes = new Class[] { <type1>.class, <type2>.class, ... };
        code.constant().setValue(fmds.length);
        code.anewarray().setType(Class.class);
        for (int i = 0; i < fmds.length; i++) {
            code.dup();
            code.constant().setValue(i);
            code.classconstant().setClass(fmds[i].getDeclaredType());
            code.aastore();
        }
        code.putstatic().setField(PRE + "FieldTypes", Class[].class);

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        // pcFieldFlags = new byte[] { <flag1>, <flag2>, ... };
        code.constant().setValue(fmds.length);
        code.newarray().setType(byte.class);
        for (int i = 0; i < fmds.length; i++) {
            code.dup();
            code.constant().setValue(i);
            code.constant().setValue(getFieldFlag(fmds[i]));
            code.bastore();
        }
        code.putstatic().setField(PRE + "FieldFlags", byte[].class);

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        if (_pc.isAbstract())
            code.constant().setNull();
        else {
            code.anew().setType(_pc);
            code.dup();
            code.invokespecial().setMethod("<init>", void.class, null);
        }


        code.invokestatic().setMethod(HELPERTYPE, "register", void.class,
            new Class[]{ Class.class, String[].class, Class[].class,

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        method.getExceptions(true).addException(ObjectStreamException.class);
        Code code = method.getCode(true);


        // Object o = new <managed-type>()
        code.anew().setType(_managedType); // for return
        code.dup(); // for post-<init> work
        code.dup(); // for <init>
        code.invokespecial().setMethod(_managedType.getType(), "<init>",
            void.class, null);


        // copy all the fields.

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        Code code = method.getCode(true);


        // Object o = new <managed-type>()
        code.anew().setType(_managedType); // for return
        code.dup(); // for post-<init> work
        code.dup(); // for <init>
        code.invokespecial().setMethod(_managedType.getType(), "<init>",
            void.class, null);


        // copy all the fields.
        // ##### limiting to JPA @Transient limitations

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