Examples of org.apache.jdo.impl.enhancer.classfile.Insn

Package org.apache.jdo.impl.enhancer.classfile

Examples of org.apache.jdo.impl.enhancer.classfile.Insn

org.apache.jdo.impl.enhancer.classfile.Insn
Insn is an abstract class which represents a java VM instruction in a sequence of instructions.


        //^olsen: exceptAttr != null ???


        // begin of method body
        final InsnTarget begin = new InsnTarget();
        Insn insn = begin;


        // store the sm field into local var
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            Insn.create(
                opc_getfield,
                getjdoStateManagerFieldRef()));
        insn = insn.append(Insn.create(opc_astore_2));


        // test the sm field and call the sm if nonnull
        final InsnTarget check = new InsnTarget();
        insn = insn.append(Insn.create(opc_aload_2));
        insn = insn.append(Insn.create(opc_ifnull, check));


        // load 'this' on the stack
        insn = insn.append(Insn.create(opc_aload_0));


        // call the sm's method with 'this' and 'sm' arguments
        insn = insn.append(Insn.create(opc_aload_2));
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(
            new InsnInterfaceInvoke(
                pool.addInterfaceMethodRef(
                    JDO_StateManager_Path,
                    JDO_SM_replacingStateManager_Name,
                    JDO_SM_replacingStateManager_Sig),
                countMethodArgWords(JDO_SM_replacingStateManager_Sig)));


        // put result value to sm field and return
        insn = insn.append(
            Insn.create(opc_putfield,
                        getjdoStateManagerFieldRef()));
        insn = insn.append(Insn.create(opc_return));


        // invoke JDOImplHelper.checkAuthorizedStateManager with 'sm' argument
        insn = insn.append(check);
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(
            Insn.create(opc_invokestatic,
                        pool.addMethodRef(
                            JDO_JDOImplHelper_Path,
                            JDO_JDOImplHelper_checkAuthorizedStateManager_Name,
                            JDO_JDOImplHelper_checkAuthorizedStateManager_Sig)));


        // put argument value to jdoStateManager field
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(
            Insn.create(opc_putfield,
                        getjdoStateManagerFieldRef()));


        // reset flags to LOAD_REQUIRED
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(Insn.create(opc_iconst_1));
        insn = insn.append(
            Insn.create(opc_putfield,
                        getjdoFlagsFieldRef()));


        // end of method body
        insn = insn.append(Insn.create(opc_return));


        final CodeAttribute codeAttr
            = new CodeAttribute(getCodeAttributeUtf8(),
                                4, // maxStack
                                3, // maxLocals

View Full Code Here

        final int accessFlags = JDO_PC_jdoReplaceFlags_Mods;
        final ExceptionsAttribute exceptAttr = null;


        // begin of method body
        final InsnTarget begin = new InsnTarget();
        Insn insn = begin;


        // store the sm field into local var
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            Insn.create(
                opc_getfield,
                getjdoStateManagerFieldRef()));
        insn = insn.append(Insn.create(opc_astore_1));


        // test the sm field and goto end if null
        final InsnTarget end = new InsnTarget();
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(Insn.create(opc_ifnull, end));


        // load 'this' on the stack
        insn = insn.append(Insn.create(opc_aload_0));


        // call the sm's method with 'this' argument
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            new InsnInterfaceInvoke(
                pool.addInterfaceMethodRef(
                    JDO_StateManager_Path,
                    JDO_SM_replacingFlags_Name,
                    JDO_SM_replacingFlags_Sig),
                countMethodArgWords(JDO_SM_replacingFlags_Sig)));


        // put result value to flags field
        insn = insn.append(
            Insn.create(opc_putfield,
                        getjdoFlagsFieldRef()));


        // end of method body
        insn = insn.append(end);
        insn = insn.append(Insn.create(opc_return));


        final CodeAttribute codeAttr
            = new CodeAttribute(getCodeAttributeUtf8(),
                                3, // maxStack
                                2, // maxLocals

View Full Code Here

        final int accessFlags = JDO_PC_jdoMakeDirty_Mods;
        final ExceptionsAttribute exceptAttr = null;


        // begin of method body
        final InsnTarget begin = new InsnTarget();
        Insn insn = begin;


        // store the sm field into local var
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            Insn.create(
                opc_getfield,
                getjdoStateManagerFieldRef()));
        insn = insn.append(Insn.create(opc_astore_2));


        // test the sm field and goto end if null
        final InsnTarget end = new InsnTarget();
        insn = insn.append(Insn.create(opc_aload_2));
        insn = insn.append(Insn.create(opc_ifnull, end));


        // call the sm's method with 'this' and 'fieldname' arguments
        insn = insn.append(Insn.create(opc_aload_2));
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(
            new InsnInterfaceInvoke(
                pool.addInterfaceMethodRef(
                    JDO_StateManager_Path,
                    JDO_SM_makeDirty_Name,
                    JDO_SM_makeDirty_Sig),
                countMethodArgWords(JDO_SM_makeDirty_Sig)));


        // end of method body
        insn = insn.append(end);
        insn = insn.append(Insn.create(opc_return));


        final CodeAttribute codeAttr
            = new CodeAttribute(getCodeAttributeUtf8(),
                                3, // maxStack
                                3, // maxLocals

View Full Code Here

        final int accessFlags = JDO_PC_jdoPreSerialize_Mods;
        final ExceptionsAttribute exceptAttr = null;


        // begin of method body
        final InsnTarget begin = new InsnTarget();
        Insn insn = begin;


        // store the sm field into local var
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            Insn.create(
                opc_getfield,
                getjdoStateManagerFieldRef()));
        insn = insn.append(Insn.create(opc_astore_1));


        // test the sm field and goto end if null
        final InsnTarget end = new InsnTarget();
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(Insn.create(opc_ifnull, end));


        // call the sm's method with 'this' argument
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            new InsnInterfaceInvoke(
                pool.addInterfaceMethodRef(
                    JDO_StateManager_Path,
                    JDO_SM_preSerialize_Name,
                    JDO_SM_preSerialize_Sig),
                countMethodArgWords(JDO_SM_preSerialize_Sig)));


        // end of method body
        insn = insn.append(end);
        insn = insn.append(Insn.create(opc_return));


        final CodeAttribute codeAttr
            = new CodeAttribute(getCodeAttributeUtf8(),
                                2, // maxStack
                                2, // maxLocals

View Full Code Here

                pool.addUtf8(ExceptionsAttribute.expectedAttrName),
                pool.addClass("java/io/IOException"));
        
        // begin of method body
        final InsnTarget begin = new InsnTarget();
        Insn insn = begin;


        // call jdoPreSerialize 
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            Insn.create(opc_invokevirtual,
                        pool.addMethodRef(
                            className,
                            JDO_PC_jdoPreSerialize_Name,
                            JDO_PC_jdoPreSerialize_Sig)));


        // call out.defaultWriteObject();
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(
            Insn.create(opc_invokevirtual,
                        pool.addMethodRef(
                            JAVA_ObjectOutputStream_Path,
                            JAVA_ObjectOutputStream_defaultWriteObject_Name,
                            JDO_PC_jdoPreSerialize_Sig)));
        
        // end of method body
        insn = insn.append(Insn.create(opc_return));


        final CodeAttribute codeAttr
            = new CodeAttribute(getCodeAttributeUtf8(),
                                1, // maxStack
                                2, // maxLocals

View Full Code Here

    {
        final ExceptionsAttribute exceptAttr = null;


        // begin of method body
        final InsnTarget begin = new InsnTarget();
        Insn insn = begin;
        
        // invoke jdoPreSerialize
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            Insn.create(opc_invokevirtual,
                        pool.addMethodRef(
                            className,
                            JDO_PC_jdoPreSerialize_Name,
                            JDO_PC_jdoPreSerialize_Sig)));

View Full Code Here

    {
        final ExceptionsAttribute exceptAttr = null;


        // begin of method body
        final InsnTarget begin = new InsnTarget();
        Insn insn = begin;


        // store the sm field into local var
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            Insn.create(
                opc_getfield,
                getjdoStateManagerFieldRef()));
        insn = insn.append(Insn.create(opc_astore_1));


        // test the sm field and do the call if nonnull
        InsnTarget noncall = new InsnTarget();
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(Insn.create(opc_ifnull, noncall));


        // call the sm's method with 'this' argument and return
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            new InsnInterfaceInvoke(
                pool.addInterfaceMethodRef(
                    JDO_StateManager_Path,
                    delegateName,
                    delegateSig),
                countMethodArgWords(delegateSig)));
        insn = insn.append(Insn.create(opc_ireturn));


        // return false
        insn = insn.append(noncall);
        insn = insn.append(Insn.create(opc_iconst_0));


        // end of method body
        insn = insn.append(Insn.create(opc_ireturn));


        final CodeAttribute codeAttr
            = new CodeAttribute(getCodeAttributeUtf8(),
                                2, // maxStack
                                2, // maxLocals

View Full Code Here

    {
        final ExceptionsAttribute exceptAttr = null;


        // begin of method body
        final InsnTarget begin = new InsnTarget();
        Insn insn = begin;


        // store the sm field into local var
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            Insn.create(
                opc_getfield,
                getjdoStateManagerFieldRef()));
        insn = insn.append(Insn.create(opc_astore_1));


        // test the sm field and do the call if nonnull
        InsnTarget noncall = new InsnTarget();
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(Insn.create(opc_ifnull, noncall));


        // call the sm's method with 'this' argument and return
        insn = insn.append(Insn.create(opc_aload_1));
        insn = insn.append(Insn.create(opc_aload_0));
        insn = insn.append(
            new InsnInterfaceInvoke(
                pool.addInterfaceMethodRef(
                    JDO_StateManager_Path,
                    delegateName,
                    delegateSig),
                countMethodArgWords(delegateSig)));
        insn = insn.append(Insn.create(opc_areturn));


        // return null
        insn = insn.append(noncall);
        insn = insn.append(Insn.create(opc_aconst_null));


        // end of method body
        insn = insn.append(Insn.create(opc_areturn));


        final CodeAttribute codeAttr
            = new CodeAttribute(getCodeAttributeUtf8(),
                                2, // maxStack
                                2, // maxLocals

View Full Code Here

                && !(methodName.equals("jdoPreStore()")
                     || methodName.equals("jdoPreDelete()")))
               || methodName.equals("readObject(java.io.ObjectInputStream)"));


        // first instruction is a target
        final Insn firstInsn = codeAttr.theCode();
        Insn insn = firstInsn.next();
        while (insn != null) {
            switch(insn.opcode()) {
            case VMConstants.opc_getfield:
            case VMConstants.opc_putfield: {
                final int r = checkGetPutField(out, insn, jdoMethod);
                if (r < NEGATIVE) {
                    res = ERROR;
                }
                break;
            }
            case VMConstants.opc_invokestatic: {
                final int r = checkInvokeStatic(out, insn, jdoMethod);
                if (r < NEGATIVE) {
                    res = ERROR;
                } else if (r > NEGATIVE) {
                    if (res == NEGATIVE) {
                        res = AFFIRMATIVE;
                    }
                }
                break;
            }
            default:
            }


            insn = insn.next();
        }


        return res;
    }

View Full Code Here

               "Attempt to add code to a native method.");
        final CodeAttribute foundCodeAttr = method.codeAttribute();
        affirm(foundCodeAttr != null);  // by JVM spec


        // prepend the new code to the current one
        final Insn firstInsn = codeAttr.theCode();
        affirm(firstInsn != null);
        final Insn foundFirstInsn = foundCodeAttr.theCode();
        affirm(foundFirstInsn != null);
        final Insn lastInsn = firstInsn.append(foundFirstInsn);
        affirm(lastInsn != null);
        foundCodeAttr.setTheCode(firstInsn);


        // ajust the method's stack and locals demand
        foundCodeAttr.setStackUsed(max(foundCodeAttr.stackUsed(),

View Full Code Here

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org.apache.jdo.impl.enhancer.core.Annotater

org.apache.jdo.impl.enhancer.core.Augmenter

org.apache.jdo.impl.enhancer.core.Builder

org.apache.jdo.impl.enhancer.util.AnnotationTest

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