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

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

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

org.apache.jdo.impl.enhancer.classfile.InsnTarget
InsnTarget is a pseudo-instruction which represents a branch target in an instruction stream.

        affirm(managedFieldSigs.length >= managedFieldCount);
        affirm(managedFieldRefs.length >= managedFieldCount);


        // generate the switch
        final int lowOp = 0;
        final InsnTarget defaultOp = new InsnTarget();
        final InsnTarget[] targetsOp = new InsnTarget[managedFieldCount];
        for (int i = 0; i < managedFieldCount; i++) {
            targetsOp[i] = new InsnTarget();
        }            


        // javac prefers lookup switches for 1-element tables
        if (managedFieldCount <= 1) {
            final int[] matchesOp

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        //@olsen: fix 4467428, add dummy, non-empty line number table
        if (addLineNumberTableAttr) {
            // get first instruction which always is an instruction target
            affirm(codeAttr.theCode().opcode() == Insn.opc_target);
            final InsnTarget begin = (InsnTarget)codeAttr.theCode();


            // get attributes of the code attribute
            final AttributeVector codeSpecificAttrs = codeAttr.attributes();
            affirm(codeSpecificAttrs != null);

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        affirm(insn != null);
        affirm(exceptionName != null);
        affirm(exceptionText != null);
        
        // throw exception if sm == null
        final InsnTarget body = new InsnTarget();
        insn = insn.append(InsnUtils.aLoad(argStart, pool));
        insn = insn.append(
            Insn.create(
                opc_getfield,
                getjdoStateManagerFieldRef()));

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        affirm(insn != null);
        affirm(exceptionName != null);
        affirm(exceptionText != null);


        // throw exception if obj == null
        final InsnTarget body = new InsnTarget();
        insn = insn.append(InsnUtils.aLoad(argStart, pool));
        insn = insn.append(Insn.create(opc_ifnonnull, body));
        insn = appendThrowJavaException(insn, exceptionName, exceptionText);
        insn = insn.append(body);

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        affirm(constClass != null);
        affirm(exceptionName != null);
        affirm(exceptionText != null);


        // throw exception if obj not instance of class
        final InsnTarget body = new InsnTarget();
        insn = insn.append(InsnUtils.aLoad(argStart, pool));
        insn = insn.append(Insn.create(opc_instanceof, constClass));
        insn = insn.append(Insn.create(opc_ifne, body));
        insn = appendThrowJavaException(insn, exceptionName, exceptionText);
        insn = insn.append(body);

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        // assumed nonstatic call; otherwise subtract 'this' from maxStack
        affirm((accessFlags & ACCStatic) == 0);
        final ExceptionsAttribute exceptAttr = null;


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


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

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        final ExceptionsAttribute exceptAttr = null;


        //^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));

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        final String methodSig = JDO_PC_jdoReplaceFlags_Sig;
        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));

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        final String methodSig = JDO_PC_jdoMakeDirty_Sig;
        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));

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        final String methodSig = JDO_PC_jdoPreSerialize_Sig;
        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));

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Related Classes of org.apache.jdo.impl.enhancer.classfile.InsnTarget

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

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

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