Examples of serp.bytecode.BCMethod

serp.bytecode.BCMethod
A method of a class. @author Abe White

    private void addNewInstanceMethod(boolean oid) {
        // public PersistenceCapable pcNewInstance (...)
        Class[] args =
            (oid) ? new Class[]{ SMTYPE, Object.class, boolean.class }
                : new Class[]{ SMTYPE, boolean.class };
        BCMethod method = _pc.declareMethod(PRE + "NewInstance", PCTYPE, args);
        Code code = method.getCode(true);


        // if the type is abstract, throw a UserException
        if (_pc.isAbstract()) {
            throwException(code, USEREXCEP);
            code.vreturn();

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     * method to the bytecode, returning the inherited field count added
     * to the number of managed fields in the current PersistenceCapable class.
     */
    private void addManagedFieldCountMethod() {
        // protected static int pcGetManagedFieldCount ()
        BCMethod method = _pc.declareMethod(PRE + "GetManagedFieldCount",
            int.class, null);
        method.setStatic(true);
        method.makeProtected();
        Code code = method.getCode(true);


        // return <fields> + pcInheritedFieldCount
        // awhite: the above should work, but I'm seeing a messed up situation
        // all of a sudden where when a subclass calls this method, it somehow
        // happens before <clinit> is ever invoked, and so our

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     * {@link PersistenceCapable#pcProvideFields} methods to the bytecode.
     */
    private void addProvideFieldsMethods()
        throws NoSuchMethodException {
        // public void pcProvideField (int fieldNumber)
        BCMethod method = _pc.declareMethod(PRE + "ProvideField", void.class,
            new Class[]{ int.class });
        Code code = method.getCode(true);


        // adds everything through the switch ()
        int relLocal = beginSwitchMethod(PRE + "ProvideField", code);


        // if no fields in this inst, just throw exception

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     * {@link PersistenceCapable#pcReplaceFields} methods to the bytecode.
     */
    private void addReplaceFieldsMethods()
        throws NoSuchMethodException {
        // public void pcReplaceField (int fieldNumber)
        BCMethod method = _pc.declareMethod(PRE + "ReplaceField", void.class,
            new Class[]{ int.class });
        Code code = method.getCode(true);


        // adds everything through the switch ()
        int relLocal = beginSwitchMethod(PRE + "ReplaceField", code);


        // if no fields in this inst, just throw exception

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     * Adds the {@link PersistenceCapable#pcCopyFields} method to the bytecode.
     */
    private void addCopyFieldsMethod()
        throws NoSuchMethodException {
        // public void pcCopyField (Object pc, int field)
        BCMethod method = _pc.declareMethod(PRE + "CopyField",
            void.class.getName(),
            new String[]{ _managedType.getName(), int.class.getName() });
        method.makeProtected();
        Code code = method.getCode(true);


        // adds everything through the switch ()
        int relLocal = beginSwitchMethod(PRE + "CopyField", code);


        // if no fields in this inst, just throw exception

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        boolean copy = (PRE + "CopyField").equals(single.getName());


        // public void <method>s (int[] fields)
        Class[] args = (copy) ? new Class[]{ Object.class, int[].class }
            : new Class[]{ int[].class };
        BCMethod method = _pc.declareMethod(single.getName() + "s",
            void.class, args);
        Code code = method.getCode(true);


        int fieldNumbers = 0;
        int inst = 0;
        if (copy) {
            fieldNumbers = 1;

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                (Method) AccessController.doPrivileged(
                    J2DoPrivHelper.getDeclaredMethodAction(
                        SMTYPE, "dirty", new Class[]{ String.class })), false);
    
            // pcGetStateManager
            BCMethod meth = _pc.declareMethod(PRE + "GetStateManager",
                StateManager.class, null);
            Code code = meth.getCode(true);
            loadManagedInstance(code, false);
            code.getfield().setField(SM, StateManager.class);
            code.areturn();
            code.calculateMaxStack();
            code.calculateMaxLocals();

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        String name = PRE + StringUtils.capitalize(m.getName());
        Class[] params = m.getParameterTypes();
        Class returnType = m.getReturnType();


        // add the method to the pc
        BCMethod method = _pc.declareMethod(name, returnType, params);
        Code code = method.getCode(true);


        // if (pcStateManager == null) return <default>;
        loadManagedInstance(code, false);
        code.getfield().setField(SM, SMTYPE);
        JumpInstruction ifins = code.ifnonnull();

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    /**
     * Adds the {@link PersistenceCapable#pcGetVersion} method to the bytecode.
     */
    private void addGetVersionMethod()
        throws NoSuchMethodException {
        BCMethod method = _pc.declareMethod(PRE + "GetVersion", Object.class,
            null);
        Code code = method.getCode(true);


        // if (pcStateManager == null)
        loadManagedInstance(code, false);
        code.getfield().setField(SM, SMTYPE);
        JumpInstruction ifins = code.ifnonnull();

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     * Adds the {@link PersistenceCapable#pcReplaceStateManager}
     * method to the bytecode.
     */
    private void addReplaceStateManagerMethod() {
        // public void pcReplaceStateManager (StateManager sm)
        BCMethod method = _pc.declareMethod(PRE + "ReplaceStateManager",
            void.class, new Class[]{ SMTYPE });
        method.setSynchronized(true);
        method.getExceptions(true).addException(SecurityException.class);
        Code code = method.getCode(true);


        // if (pcStateManager != null)
        //  pcStateManager = pcStateManager.replaceStateManager(sm);
        loadManagedInstance(code, false);
        code.getfield().setField(SM, SMTYPE);

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