Package serp.bytecode

Examples of serp.bytecode.Code$CodeIterator

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        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();
        if (returnType.equals(boolean.class))
            code.constant().setValue(false);
        else if (!returnType.equals(void.class))
            code.constant().setNull();
        code.xreturn().setType(returnType);

        // if this is the dirty-check method and we're subclassing but not
        // redefining, hook into PCHelper to do the dirty check
        if (isDirtyCheckMethod && !getRedefine()) {
            // RedefinitionHelper.dirtyCheck(sm);
            ifins.setTarget(loadManagedInstance(code, false));
            code.getfield().setField(SM, SMTYPE);
            code.dup(); // for the return statement below
            code.invokestatic().setMethod(RedefinitionHelper.class,
                "dirtyCheck", void.class, new Class[] { SMTYPE });
        } else {
            ifins.setTarget(loadManagedInstance(code, false));
            code.getfield().setField(SM, SMTYPE);
        }
       
        // return pcStateManager.<method> (<args>);
        // managed instance loaded above in if-else block
        for (int i = 0; i < params.length; i++)
            code.xload().setParam(i);
        code.invokeinterface().setMethod(m);
        code.xreturn().setType(returnType);

        code.calculateMaxStack();
        code.calculateMaxLocals();
    }
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        code.calculateMaxStack();
        code.calculateMaxLocals();
    }

    private void addLoadWithFieldsMethod(BCClass bc, ClassMetaData meta) {
        Code code = addLoadMethod(bc, true);
        // public void load(OpenJPAStateManager sm, BitSet fields,
        //     FetchConfiguration fetch, Object conn)
        FieldMetaData[] fmds = meta.getFields();
        Collection jumps = new LinkedList();
        Collection jumps2;
        int objectCount = 0;
        boolean intermediate;
        int local = code.getNextLocalsIndex();
        code.constant().setNull();
        code.astore().setLocal(local);
        int inter = code.getNextLocalsIndex();
        code.constant().setNull();
        code.astore().setLocal(inter);

        for (int i = 0; i < fmds.length; i++) {
            jumps2 = new LinkedList();
            intermediate = usesIntermediate(fmds[i]);
            // if (fields.get(i))
            // {
            //     if (loaded.get(i))
            setTarget(code.aload().setParam(1), jumps);
            code.constant().setValue(i);
            code.invokevirtual().setMethod(BitSet.class, "get",
                boolean.class, new Class[]{ int.class });
            jumps2.add(code.ifeq());
            code.aload().setThis();
            code.getfield().setField("loaded", BitSet.class);
            code.constant().setValue(i);
            code.invokevirtual().setMethod(BitSet.class, "get",
                boolean.class, new Class[]{ int.class });
            if (intermediate)
                jumps.add(code.ifeq());
            else
                jumps2.add(code.ifeq());

            addLoad(bc, code, fmds[i], objectCount, local, true);
            if (usesImplData(fmds[i])) {
                // loadImplData(sm, i);
                code.aload().setThis();
                code.aload().setParam(0);
                code.constant().setValue(i);
                code.invokevirtual().setMethod("loadImplData", void.class,
                    new Class[]{ OpenJPAStateManager.class, int.class });
            }

            // fields.clear(i);
            code.aload().setParam(1);
            code.constant().setValue(i);
            code.invokevirtual().setMethod(BitSet.class, "clear", void.class,
                new Class[] { int.class });

            jumps2.add(code.go2());

            if (intermediate)
                setTarget(addLoadIntermediate
                    (code, i, objectCount, jumps2, inter), jumps);

            jumps = jumps2;
            if (replaceType(fmds[i]) >= JavaTypes.OBJECT)
                objectCount++;
        }
        setTarget(code.vreturn(), jumps);
        code.calculateMaxStack();
        code.calculateMaxLocals();
    }
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    private void addProxyBeanMethods(BCClass bc, Class type, Constructor cons) {
        // bean copy
        BCMethod m = bc.declareMethod("copy", Object.class,
            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]);
        }
        code.invokespecial().setMethod(cons);
        if (params.length == 0)
            copyProperties(type, code);
        code.areturn();
        code.calculateMaxStack();
        code.calculateMaxLocals();

        // new instance factory
        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);
        if (params.length == 0)
            copyProperties(type, code);
        code.areturn();
        code.calculateMaxStack();
        code.calculateMaxLocals();
    }
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                FetchConfiguration.class, Object.class };
        else
            args = new Class[]{ OpenJPAStateManager.class,
                FetchConfiguration.class, Object.class };
        BCMethod load = bc.declareMethod("load", void.class, args);
        Code code = load.getCode(true);

        //loadVersion(sm);
        code.aload().setThis();
        code.aload().setParam(0);
        code.invokevirtual().setMethod("loadVersion", void.class,
            new Class[]{ OpenJPAStateManager.class });

        //loadImplData(sm);
        code.aload().setThis();
        code.aload().setParam(0);
        code.invokevirtual().setMethod("loadImplData", void.class,
            new Class[]{ OpenJPAStateManager.class });
        return code;
    }
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            store = bc.declareMethod("store", void.class,
                new Class[]{ OpenJPAStateManager.class, BitSet.class });
        else
            store = bc.declareMethod("store", void.class,
                new Class[]{ OpenJPAStateManager.class });
        Code code = store.getCode(true);

        // initialize();
        code.aload().setThis();
        code.invokevirtual().setMethod("initialize", void.class, null);

        // storeVersion(sm);
        code.aload().setThis();
        code.aload().setParam(0);
        code.invokevirtual().setMethod("storeVersion", void.class,
            new Class[]{ OpenJPAStateManager.class });

        // storeImplData(sm);
        code.aload().setThis();
        code.aload().setParam(0);
        code.invokevirtual().setMethod("storeImplData", void.class,
            new Class[]{ OpenJPAStateManager.class });

        FieldMetaData[] fmds = meta.getFields();
        Collection jumps = new LinkedList();
        int objectCount = 0;
        for (int i = 0; i < fmds.length; i++) {
            if (fields) {
                //  if (fields != null && fields.get(index))
                setTarget(code.aload().setParam(1), jumps);
                jumps.add(code.ifnull());
                code.aload().setParam(1);
                code.constant().setValue(i);
                code.invokevirtual().setMethod(BitSet.class, "get",
                    boolean.class, new Class[]{ int.class });
                jumps.add(code.ifeq());
            } else {
                // if (sm.getLoaded().get(index)))
                setTarget(code.aload().setParam(0), jumps);
                code.invokeinterface().setMethod(OpenJPAStateManager.class,
                    "getLoaded", BitSet.class, null);
                code.constant().setValue(i);
                code.invokevirtual().setMethod(BitSet.class, "get",
                    boolean.class, new Class[]{ int.class });
                jumps.add(code.ifeq());
            }
            addStore(bc, code, fmds[i], objectCount);
            if (usesIntermediate(fmds[i])) {
                JumpInstruction elseIns = code.go2();
                // else if (!loaded.get(index))
                setTarget(code.aload().setThis(), jumps);
                jumps.add(elseIns);
                code.getfield().setField("loaded", BitSet.class);
                code.constant().setValue(i);
                code.invokevirtual().setMethod(BitSet.class, "get",
                    boolean.class, new Class[]{ int.class });
                jumps.add(code.ifne());
                // Object val = sm.getIntermediate(index);
                // if (val != null)
                //     objects[objectCount] = val;
                code.aload().setParam(0);
                code.constant().setValue(i);
                code.invokeinterface().setMethod(OpenJPAStateManager.class,
                    "getIntermediate", Object.class, new Class[]{ int.class });
                int local = code.getNextLocalsIndex();
                code.astore().setLocal(local);
                code.aload().setLocal(local);
                jumps.add(code.ifnull());
                code.aload().setThis();
                code.getfield().setField("objects", Object[].class);
                code.constant().setValue(objectCount);
                code.aload().setLocal(local);
                code.aastore();
            }
            if (replaceType(fmds[i]) >= JavaTypes.OBJECT)
                objectCount++;
        }
        setTarget(code.vreturn(), jumps);
        code.calculateMaxLocals();
        code.calculateMaxStack();
    }
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    private void proxyOverrideMethod(BCClass bc, Method meth,
        Method helper, Class[] params) {
        BCMethod m = bc.declareMethod(meth.getName(), meth.getReturnType(),
            meth.getParameterTypes());
        m.makePublic();
        Code code = m.getCode(true);

        code.aload().setThis();
        for (int i = 1; i < params.length; i++)
            code.xload().setParam(i - 1).setType(params[i]);
        code.invokestatic().setMethod(helper);
        code.xreturn().setType(meth.getReturnType());

        code.calculateMaxStack();
        code.calculateMaxLocals();
    }
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    private void proxyBeforeAfterMethod(BCClass bc, Class type, Method meth,
        Method before, Class[] params, Method after, Class[] afterParams) {
        BCMethod m = bc.declareMethod(meth.getName(), meth.getReturnType(),
            meth.getParameterTypes());
        m.makePublic();
        Code code = m.getCode(true);

        // invoke before
        int beforeRet = -1;
        if (before != null) {
            code.aload().setThis();
            for (int i = 1; i < params.length; i++)
                code.xload().setParam(i - 1).setType(params[i]);
            code.invokestatic().setMethod(before);
            if (after != null && before.getReturnType() != void.class) {
                beforeRet = code.getNextLocalsIndex();
                code.xstore().setLocal(beforeRet).
                    setType(before.getReturnType());
            }
        }

        // invoke super
        code.aload().setThis();
        for (int i = 1; i < params.length; i++)
            code.xload().setParam(i - 1).setType(params[i]);
        code.invokespecial().setMethod(type, meth.getName(),
            meth.getReturnType(), meth.getParameterTypes());

        // invoke after
        if (after != null) {
            int ret = -1;
            if (meth.getReturnType() != void.class) {
                ret = code.getNextLocalsIndex();
                code.xstore().setLocal(ret).setType(meth.getReturnType());
            }
            code.aload().setThis();
            for (int i = 1; i < params.length; i++)
                code.xload().setParam(i - 1).setType(params[i]);
            if (ret != -1)
                code.xload().setLocal(ret).setType(meth.getReturnType());
            if (beforeRet != -1)
                code.xload().setLocal(beforeRet).
                    setType(before.getReturnType());
            code.invokestatic().setMethod(after);
        }
        code.xreturn().setType(meth.getReturnType());

        code.calculateMaxStack();
        code.calculateMaxLocals();
    }
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    private void addNewEmbedded(BCClass bc) {
        // void newEmbeddedPCData(OpenJPAStateManager embedded)
        BCMethod meth = bc.declareMethod("newEmbeddedPCData", PCData.class,
            new Class[]{ OpenJPAStateManager.class });
        Code code = meth.getCode(true);
        // return getStorageGenerator().generatePCData
        //     (sm.getId(), sm.getMetaData());
        code.aload().setThis();
        code.getfield().setField("storageGenerator", PCDataGenerator.class);
        code.aload().setParam(0);
        code.invokeinterface().setMethod(OpenJPAStateManager.class,
            "getId", Object.class, null);
        code.aload().setParam(0);
        code.invokeinterface().setMethod(OpenJPAStateManager.class,
            "getMetaData", ClassMetaData.class, null);
        code.invokevirtual().setMethod(PCDataGenerator.class,
            "generatePCData", PCData.class, new Class[]
            { Object.class, ClassMetaData.class });
        code.areturn();
        code.calculateMaxLocals();
        code.calculateMaxStack();
    }
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    private void addGetData(BCClass bc) {
        // return getObjectField(i);
        BCMethod method = bc.declareMethod("getData", Object.class,
            new Class[]{ int.class });
        Code code = method.getCode(true);
        code.aload().setThis();
        code.iload().setParam(0);
        code.invokevirtual().setMethod("getObject", Object.class,
            new Class[]{ int.class });
        code.areturn();
        code.calculateMaxLocals();
        code.calculateMaxStack();
    }
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    private void proxySetter(BCClass bc, Class type, Method meth) {
        Class[] params = meth.getParameterTypes();
        Class ret = meth.getReturnType();
        BCMethod m = bc.declareMethod(meth.getName(), ret, params);
        m.makePublic();
        Code code = m.getCode(true);
        code.aload().setThis();
        code.constant().setValue(true);
        code.invokestatic().setMethod(Proxies.class, "dirty", void.class,
            new Class[] { Proxy.class, boolean.class });
        code.aload().setThis();
        for (int i = 0; i < params.length; i++)
            code.xload().setParam(i).setType(params[i]);
        code.invokespecial().setMethod(type, meth.getName(), ret, params);
        code.xreturn().setType(ret);
        code.calculateMaxStack();
        code.calculateMaxLocals();
    }
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Related Classes of serp.bytecode.Code$CodeIterator

  • org.apache.axis.utils.bytecode.Serp
  • org.apache.openjpa.datacache.DataCachePCDataGenerator
  • org.apache.openjpa.enhance.DynamicStorageGenerator
  • org.apache.openjpa.enhance.PCDataGenerator
  • org.apache.openjpa.enhance.PCEnhancer
  • org.apache.openjpa.enhance.stats.FetchStatisticsAuxEnhancer
  • org.apache.openjpa.lib.util.ConcreteClassGenerator
  • org.apache.openjpa.lib.util.J2DoPrivHelper
  • org.apache.openjpa.meta.InterfaceImplGenerator
  • org.apache.openjpa.util.ProxyManagerImpl
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