com.sun.org.apache.bcel.internal.generic.ALOAD Java Examples

/**
 * Helper method to generate an instance of a subclass of
 * {@link LoadInstruction} based on the specified {@link Type} that will
 * load the specified local variable
 * @param index the JVM stack frame index of the variable that is to be
 * loaded
 * @param type the {@link Type} of the variable
 * @return the generated {@link LoadInstruction}
 */
private static Instruction loadLocal(int index, Type type) {
    if (type == Type.BOOLEAN) {
       return new ILOAD(index);
    } else if (type == Type.INT) {
       return new ILOAD(index);
    } else if (type == Type.SHORT) {
       return new ILOAD(index);
    } else if (type == Type.LONG) {
       return new LLOAD(index);
    } else if (type == Type.BYTE) {
       return new ILOAD(index);
    } else if (type == Type.CHAR) {
       return new ILOAD(index);
    } else if (type == Type.FLOAT) {
       return new FLOAD(index);
    } else if (type == Type.DOUBLE) {
       return new DLOAD(index);
    } else {
       return new ALOAD(index);
    }
}
 

/**
 * Helper method to generate an instance of a subclass of
 * {@link LoadInstruction} based on the specified {@link Type} that will
 * load the specified local variable
 * @param index the JVM stack frame index of the variable that is to be
 * loaded
 * @param type the {@link Type} of the variable
 * @return the generated {@link LoadInstruction}
 */
private static Instruction loadLocal(int index, Type type) {
    if (type == Type.BOOLEAN) {
       return new ILOAD(index);
    } else if (type == Type.INT) {
       return new ILOAD(index);
    } else if (type == Type.SHORT) {
       return new ILOAD(index);
    } else if (type == Type.LONG) {
       return new LLOAD(index);
    } else if (type == Type.BYTE) {
       return new ILOAD(index);
    } else if (type == Type.CHAR) {
       return new ILOAD(index);
    } else if (type == Type.FLOAT) {
       return new FLOAD(index);
    } else if (type == Type.DOUBLE) {
       return new DLOAD(index);
    } else {
       return new ALOAD(index);
    }
}
 

public CompareGenerator(int access_flags, Type return_type,
                        Type[] arg_types, String[] arg_names,
                        String method_name, String class_name,
                        InstructionList il, ConstantPoolGen cp) {
    super(access_flags, return_type, arg_types, arg_names, method_name,
          class_name, il, cp);

    _iloadCurrent = new ILOAD(CURRENT_INDEX);
    _istoreCurrent = new ISTORE(CURRENT_INDEX);
    _aloadDom = new ALOAD(DOM_INDEX);
    _iloadLast = new ILOAD(LAST_INDEX);

    LocalVariableGen iterator =
        addLocalVariable("iterator",
                         Util.getJCRefType(Constants.NODE_ITERATOR_SIG),
                         null, null);
    ITERATOR_INDEX = iterator.getIndex();
    _aloadIterator = new ALOAD(ITERATOR_INDEX);
    _astoreIterator = new ASTORE(ITERATOR_INDEX);
    il.append(new ACONST_NULL());
    il.append(storeIterator());
}
 

public CompareGenerator(int access_flags, Type return_type,
                        Type[] arg_types, String[] arg_names,
                        String method_name, String class_name,
                        InstructionList il, ConstantPoolGen cp) {
    super(access_flags, return_type, arg_types, arg_names, method_name,
          class_name, il, cp);

    _iloadCurrent = new ILOAD(CURRENT_INDEX);
    _istoreCurrent = new ISTORE(CURRENT_INDEX);
    _aloadDom = new ALOAD(DOM_INDEX);
    _iloadLast = new ILOAD(LAST_INDEX);

    LocalVariableGen iterator =
        addLocalVariable("iterator",
                         Util.getJCRefType(Constants.NODE_ITERATOR_SIG),
                         null, null);
    ITERATOR_INDEX = iterator.getIndex();
    _aloadIterator = new ALOAD(ITERATOR_INDEX);
    _astoreIterator = new ASTORE(ITERATOR_INDEX);
    il.append(new ACONST_NULL());
    il.append(storeIterator());
}
 

/**
 * Helper method to generate an instance of a subclass of
 * {@link LoadInstruction} based on the specified {@link Type} that will
 * load the specified local variable
 * @param index the JVM stack frame index of the variable that is to be
 * loaded
 * @param type the {@link Type} of the variable
 * @return the generated {@link LoadInstruction}
 */
private static Instruction loadLocal(int index, Type type) {
    if (type == Type.BOOLEAN) {
       return new ILOAD(index);
    } else if (type == Type.INT) {
       return new ILOAD(index);
    } else if (type == Type.SHORT) {
       return new ILOAD(index);
    } else if (type == Type.LONG) {
       return new LLOAD(index);
    } else if (type == Type.BYTE) {
       return new ILOAD(index);
    } else if (type == Type.CHAR) {
       return new ILOAD(index);
    } else if (type == Type.FLOAT) {
       return new FLOAD(index);
    } else if (type == Type.DOUBLE) {
       return new DLOAD(index);
    } else {
       return new ALOAD(index);
    }
}
 

/**
 * Helper method to generate an instance of a subclass of
 * {@link LoadInstruction} based on the specified {@link Type} that will
 * load the specified local variable
 * @param index the JVM stack frame index of the variable that is to be
 * loaded
 * @param type the {@link Type} of the variable
 * @return the generated {@link LoadInstruction}
 */
private static Instruction loadLocal(int index, Type type) {
    if (type == Type.BOOLEAN) {
       return new ILOAD(index);
    } else if (type == Type.INT) {
       return new ILOAD(index);
    } else if (type == Type.SHORT) {
       return new ILOAD(index);
    } else if (type == Type.LONG) {
       return new LLOAD(index);
    } else if (type == Type.BYTE) {
       return new ILOAD(index);
    } else if (type == Type.CHAR) {
       return new ILOAD(index);
    } else if (type == Type.FLOAT) {
       return new FLOAD(index);
    } else if (type == Type.DOUBLE) {
       return new DLOAD(index);
    } else {
       return new ALOAD(index);
    }
}
 

public ClassGenerator(String class_name, String super_class_name,
                      String file_name,
                      int access_flags, String[] interfaces,
                      Stylesheet stylesheet) {
    super(class_name, super_class_name, file_name,
          access_flags, interfaces);
    _stylesheet = stylesheet;
    _parser = stylesheet.getParser();
    _aloadTranslet = new ALOAD(TRANSLET_INDEX);

    if (stylesheet.isMultiDocument()) {
        _domClass = "com.sun.org.apache.xalan.internal.xsltc.dom.MultiDOM";
        _domClassSig = "Lcom/sun/org/apache/xalan/internal/xsltc/dom/MultiDOM;";
    }
    else {
        _domClass = "com.sun.org.apache.xalan.internal.xsltc.dom.DOMAdapter";
        _domClassSig = "Lcom/sun/org/apache/xalan/internal/xsltc/dom/DOMAdapter;";
    }
    _applyTemplatesSig = "("
        + Constants.DOM_INTF_SIG
        + Constants.NODE_ITERATOR_SIG
        + Constants.TRANSLET_OUTPUT_SIG
        + ")V";

_applyTemplatesSigForImport = "("
    + Constants.DOM_INTF_SIG
    + Constants.NODE_ITERATOR_SIG
    + Constants.TRANSLET_OUTPUT_SIG
    + Constants.NODE_FIELD_SIG
    + ")V";
}
 

public NodeSortRecordGenerator(String className, String superClassName,
                               String fileName,
                               int accessFlags, String[] interfaces,
                               Stylesheet stylesheet) {
    super(className, superClassName, fileName,
          accessFlags, interfaces, stylesheet);
    _aloadTranslet = new ALOAD(TRANSLET_INDEX);
}
 

public NodeSortRecordGenerator(String className, String superClassName,
                               String fileName,
                               int accessFlags, String[] interfaces,
                               Stylesheet stylesheet) {
    super(className, superClassName, fileName,
          accessFlags, interfaces, stylesheet);
    _aloadTranslet = new ALOAD(TRANSLET_INDEX);
}
 

public FilterGenerator(String className, String superClassName,
                       String fileName,
                       int accessFlags, String[] interfaces,
                       Stylesheet stylesheet) {
    super(className, superClassName, fileName,
          accessFlags, interfaces, stylesheet);

    _aloadTranslet = new ALOAD(TRANSLET_INDEX);
}
 

/**
 * Release the compiled result tree.
 */
public void releaseResultTree(ClassGenerator classGen,
                              MethodGenerator methodGen)
{
    if (_domAdapter != null) {
        final ConstantPoolGen cpg = classGen.getConstantPool();
        final InstructionList il = methodGen.getInstructionList();
        if (classGen.getStylesheet().callsNodeset() &&
            classGen.getDOMClass().equals(MULTI_DOM_CLASS))
        {
            final int removeDA =
                cpg.addMethodref(MULTI_DOM_CLASS, "removeDOMAdapter",
                                 "(" + DOM_ADAPTER_SIG + ")V");
            il.append(methodGen.loadDOM());
            il.append(new CHECKCAST(cpg.addClass(MULTI_DOM_CLASS)));
            il.append(new ALOAD(_domAdapter.getIndex()));
            il.append(new CHECKCAST(cpg.addClass(DOM_ADAPTER_CLASS)));
            il.append(new INVOKEVIRTUAL(removeDA));
        }
        final int release =
            cpg.addInterfaceMethodref(DOM_IMPL_CLASS, "release", "()V");
        il.append(new ALOAD(_domAdapter.getIndex()));
        il.append(new INVOKEINTERFACE(release, 1));
        _domAdapter.setEnd(il.getEnd());
        methodGen.removeLocalVariable(_domAdapter);
        _domAdapter = null;
    }
}
 

public FilterGenerator(String className, String superClassName,
                       String fileName,
                       int accessFlags, String[] interfaces,
                       Stylesheet stylesheet) {
    super(className, superClassName, fileName,
          accessFlags, interfaces, stylesheet);

    _aloadTranslet = new ALOAD(TRANSLET_INDEX);
}
 

public ClassGenerator(String class_name, String super_class_name,
                      String file_name,
                      int access_flags, String[] interfaces,
                      Stylesheet stylesheet) {
    super(class_name, super_class_name, file_name,
          access_flags, interfaces);
    _stylesheet = stylesheet;
    _parser = stylesheet.getParser();
    _aloadTranslet = new ALOAD(TRANSLET_INDEX);

    if (stylesheet.isMultiDocument()) {
        _domClass = "com.sun.org.apache.xalan.internal.xsltc.dom.MultiDOM";
        _domClassSig = "Lcom/sun/org/apache/xalan/internal/xsltc/dom/MultiDOM;";
    }
    else {
        _domClass = "com.sun.org.apache.xalan.internal.xsltc.dom.DOMAdapter";
        _domClassSig = "Lcom/sun/org/apache/xalan/internal/xsltc/dom/DOMAdapter;";
    }
    _applyTemplatesSig = "("
        + Constants.DOM_INTF_SIG
        + Constants.NODE_ITERATOR_SIG
        + Constants.TRANSLET_OUTPUT_SIG
        + ")V";

_applyTemplatesSigForImport = "("
    + Constants.DOM_INTF_SIG
    + Constants.NODE_ITERATOR_SIG
    + Constants.TRANSLET_OUTPUT_SIG
    + Constants.NODE_FIELD_SIG
    + ")V";
}
 

public FilterGenerator(String className, String superClassName,
                       String fileName,
                       int accessFlags, String[] interfaces,
                       Stylesheet stylesheet) {
    super(className, superClassName, fileName,
          accessFlags, interfaces, stylesheet);

    _aloadTranslet = new ALOAD(TRANSLET_INDEX);
}
 

public RtMethodGenerator(int access_flags, Type return_type,
                         Type[] arg_types, String[] arg_names,
                         String method_name, String class_name,
                         InstructionList il, ConstantPoolGen cp) {
    super(access_flags, return_type, arg_types, arg_names, method_name,
          class_name, il, cp);

    _astoreHandler = new ASTORE(HANDLER_INDEX);
    _aloadHandler  = new ALOAD(HANDLER_INDEX);
}
 

public FilterGenerator(String className, String superClassName,
                       String fileName,
                       int accessFlags, String[] interfaces,
                       Stylesheet stylesheet) {
    super(className, superClassName, fileName,
          accessFlags, interfaces, stylesheet);

    _aloadTranslet = new ALOAD(TRANSLET_INDEX);
}
 

public TestGenerator(int access_flags, Type return_type,
                     Type[] arg_types, String[] arg_names,
                     String method_name, String class_name,
                     InstructionList il, ConstantPoolGen cp) {
    super(access_flags, return_type, arg_types, arg_names, method_name,
          class_name, il, cp);

    _iloadCurrent  = new ILOAD(CURRENT_NODE_INDEX);
    _istoreCurrent = new ISTORE(CURRENT_NODE_INDEX);
    _iloadContext  = new ILOAD(CONTEXT_NODE_INDEX);
    _istoreContext  = new ILOAD(CONTEXT_NODE_INDEX);
    _astoreIterator = new ASTORE(ITERATOR_INDEX);
    _aloadIterator  = new ALOAD(ITERATOR_INDEX);
}
 

public NodeSortRecordGenerator(String className, String superClassName,
                               String fileName,
                               int accessFlags, String[] interfaces,
                               Stylesheet stylesheet) {
    super(className, superClassName, fileName,
          accessFlags, interfaces, stylesheet);
    _aloadTranslet = new ALOAD(TRANSLET_INDEX);
}
 

public TestGenerator(int access_flags, Type return_type,
                     Type[] arg_types, String[] arg_names,
                     String method_name, String class_name,
                     InstructionList il, ConstantPoolGen cp) {
    super(access_flags, return_type, arg_types, arg_names, method_name,
          class_name, il, cp);

    _iloadCurrent  = new ILOAD(CURRENT_NODE_INDEX);
    _istoreCurrent = new ISTORE(CURRENT_NODE_INDEX);
    _iloadContext  = new ILOAD(CONTEXT_NODE_INDEX);
    _istoreContext  = new ILOAD(CONTEXT_NODE_INDEX);
    _astoreIterator = new ASTORE(ITERATOR_INDEX);
    _aloadIterator  = new ALOAD(ITERATOR_INDEX);
}
 

public ClassGenerator(String class_name, String super_class_name,
                      String file_name,
                      int access_flags, String[] interfaces,
                      Stylesheet stylesheet) {
    super(class_name, super_class_name, file_name,
          access_flags, interfaces);
    _stylesheet = stylesheet;
    _parser = stylesheet.getParser();
    _aloadTranslet = new ALOAD(TRANSLET_INDEX);

    if (stylesheet.isMultiDocument()) {
        _domClass = "com.sun.org.apache.xalan.internal.xsltc.dom.MultiDOM";
        _domClassSig = "Lcom/sun/org/apache/xalan/internal/xsltc/dom/MultiDOM;";
    }
    else {
        _domClass = "com.sun.org.apache.xalan.internal.xsltc.dom.DOMAdapter";
        _domClassSig = "Lcom/sun/org/apache/xalan/internal/xsltc/dom/DOMAdapter;";
    }
    _applyTemplatesSig = "("
        + Constants.DOM_INTF_SIG
        + Constants.NODE_ITERATOR_SIG
        + Constants.TRANSLET_OUTPUT_SIG
        + ")V";

_applyTemplatesSigForImport = "("
    + Constants.DOM_INTF_SIG
    + Constants.NODE_ITERATOR_SIG
    + Constants.TRANSLET_OUTPUT_SIG
    + Constants.NODE_FIELD_SIG
    + ")V";
}
 

public RtMethodGenerator(int access_flags, Type return_type,
                         Type[] arg_types, String[] arg_names,
                         String method_name, String class_name,
                         InstructionList il, ConstantPoolGen cp) {
    super(access_flags, return_type, arg_types, arg_names, method_name,
          class_name, il, cp);

    _astoreHandler = new ASTORE(HANDLER_INDEX);
    _aloadHandler  = new ALOAD(HANDLER_INDEX);
}
 

public Instruction LOAD(int slot) {
    return new ALOAD(slot);
}
 

public Instruction loadParameter(int index) {
    return new ALOAD(index + PARAM_START_INDEX);
}
 

public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
    final ConstantPoolGen cpg = classGen.getConstantPool();
    final InstructionList il = methodGen.getInstructionList();
    // Create new StepIterator
    final int initSI = cpg.addMethodref(STEP_ITERATOR_CLASS,
                                        "<init>",
                                        "("
                                        +NODE_ITERATOR_SIG
                                        +NODE_ITERATOR_SIG
                                        +")V");

    // Backwards branches are prohibited if an uninitialized object is
    // on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
    // We don't know whether this code might contain backwards branches,
    // so we mustn't create the new object until after we've created
    // the suspect arguments to its constructor.  Instead we calculate
    // the values of the arguments to the constructor first, store them
    // in temporary variables, create the object and reload the
    // arguments from the temporaries to avoid the problem.

    // Recursively compile 2 iterators
    _filterExpr.translate(classGen, methodGen);
    LocalVariableGen filterTemp =
            methodGen.addLocalVariable("filter_parent_path_tmp1",
                                       Util.getJCRefType(NODE_ITERATOR_SIG),
                                       null, null);
    filterTemp.setStart(il.append(new ASTORE(filterTemp.getIndex())));

    _path.translate(classGen, methodGen);
    LocalVariableGen pathTemp =
            methodGen.addLocalVariable("filter_parent_path_tmp2",
                                       Util.getJCRefType(NODE_ITERATOR_SIG),
                                       null, null);
    pathTemp.setStart(il.append(new ASTORE(pathTemp.getIndex())));

    il.append(new NEW(cpg.addClass(STEP_ITERATOR_CLASS)));
    il.append(DUP);
    filterTemp.setEnd(il.append(new ALOAD(filterTemp.getIndex())));
    pathTemp.setEnd(il.append(new ALOAD(pathTemp.getIndex())));

    // Initialize StepIterator with iterators from the stack
    il.append(new INVOKESPECIAL(initSI));

    // This is a special case for the //* path with or without predicates
    if (_hasDescendantAxis) {
        final int incl = cpg.addMethodref(NODE_ITERATOR_BASE,
                                          "includeSelf",
                                          "()" + NODE_ITERATOR_SIG);
        il.append(new INVOKEVIRTUAL(incl));
    }

    SyntaxTreeNode parent = getParent();

    boolean parentAlreadyOrdered =
        (parent instanceof RelativeLocationPath)
            || (parent instanceof FilterParentPath)
            || (parent instanceof KeyCall)
            || (parent instanceof CurrentCall)
            || (parent instanceof DocumentCall);

    if (!parentAlreadyOrdered) {
        final int order = cpg.addInterfaceMethodref(DOM_INTF,
                                                    ORDER_ITERATOR,
                                                    ORDER_ITERATOR_SIG);
        il.append(methodGen.loadDOM());
        il.append(SWAP);
        il.append(methodGen.loadContextNode());
        il.append(new INVOKEINTERFACE(order, 3));
    }
}
 

public Instruction loadParameter(int index) {
    return new ALOAD(index + PARAM_START_INDEX);
}
 

private void translateGeneralContext(ClassGenerator classGen,
                                     MethodGenerator methodGen) {
    final ConstantPoolGen cpg = classGen.getConstantPool();
    final InstructionList il = methodGen.getInstructionList();

    int iteratorIndex = 0;
    BranchHandle ifBlock = null;
    LocalVariableGen iter, node, node2;
    final String iteratorName = getNextFieldName();

    // Store node on the stack into a local variable
    node = methodGen.addLocalVariable("step_pattern_tmp1",
                                      Util.getJCRefType(NODE_SIG),
                                      null, null);
    node.setStart(il.append(new ISTORE(node.getIndex())));

    // Create a new local to store the iterator
    iter = methodGen.addLocalVariable("step_pattern_tmp2",
                                      Util.getJCRefType(NODE_ITERATOR_SIG),
                                      null, null);

    // Add a new private field if this is the main class
    if (!classGen.isExternal()) {
        final Field iterator =
            new Field(ACC_PRIVATE,
                      cpg.addUtf8(iteratorName),
                      cpg.addUtf8(NODE_ITERATOR_SIG),
                      null, cpg.getConstantPool());
        classGen.addField(iterator);
        iteratorIndex = cpg.addFieldref(classGen.getClassName(),
                                        iteratorName,
                                        NODE_ITERATOR_SIG);

        il.append(classGen.loadTranslet());
        il.append(new GETFIELD(iteratorIndex));
        il.append(DUP);
        iter.setStart(il.append(new ASTORE(iter.getIndex())));
        ifBlock = il.append(new IFNONNULL(null));
        il.append(classGen.loadTranslet());
    }

    // Compile the step created at type checking time
    _step.translate(classGen, methodGen);
    InstructionHandle iterStore = il.append(new ASTORE(iter.getIndex()));

    // If in the main class update the field too
    if (!classGen.isExternal()) {
        il.append(new ALOAD(iter.getIndex()));
        il.append(new PUTFIELD(iteratorIndex));
        ifBlock.setTarget(il.append(NOP));
    } else {
        // If class is not external, start of range for iter variable was
        // set above
        iter.setStart(iterStore);
    }

    // Get the parent of the node on the stack
    il.append(methodGen.loadDOM());
    il.append(new ILOAD(node.getIndex()));
    int index = cpg.addInterfaceMethodref(DOM_INTF,
                                          GET_PARENT, GET_PARENT_SIG);
    il.append(new INVOKEINTERFACE(index, 2));

    // Initialize the iterator with the parent
    il.append(new ALOAD(iter.getIndex()));
    il.append(SWAP);
    il.append(methodGen.setStartNode());

    /*
     * Inline loop:
     *
     * int node2;
     * while ((node2 = iter.next()) != NodeIterator.END
     *                && node2 < node);
     * return node2 == node;
     */
    BranchHandle skipNext;
    InstructionHandle begin, next;
    node2 = methodGen.addLocalVariable("step_pattern_tmp3",
                                       Util.getJCRefType(NODE_SIG),
                                       null, null);

    skipNext = il.append(new GOTO(null));
    next = il.append(new ALOAD(iter.getIndex()));
    node2.setStart(next);
    begin = il.append(methodGen.nextNode());
    il.append(DUP);
    il.append(new ISTORE(node2.getIndex()));
    _falseList.add(il.append(new IFLT(null)));      // NodeIterator.END

    il.append(new ILOAD(node2.getIndex()));
    il.append(new ILOAD(node.getIndex()));
    iter.setEnd(il.append(new IF_ICMPLT(next)));

    node2.setEnd(il.append(new ILOAD(node2.getIndex())));
    node.setEnd(il.append(new ILOAD(node.getIndex())));
    _falseList.add(il.append(new IF_ICMPNE(null)));

    skipNext.setTarget(begin);
}
 

/**
 * Set index where the reference to the DOM is stored.
 */
public void setDomIndex(int domIndex) {
    _aloadDom = new ALOAD(domIndex);
}
 

public Instruction LOAD(int slot) {
    return new ALOAD(slot);
}
 

/**
 * Compiles code that instantiates a SortingIterator object.
 * This object's constructor needs referencdes to the current iterator
 * and a node sort record producing objects as its parameters.
 */
public static void translateSortIterator(ClassGenerator classGen,
                                  MethodGenerator methodGen,
                                  Expression nodeSet,
                                  Vector<Sort> sortObjects)
{
    final ConstantPoolGen cpg = classGen.getConstantPool();
    final InstructionList il = methodGen.getInstructionList();

    // SortingIterator.SortingIterator(NodeIterator,NodeSortRecordFactory);
    final int init = cpg.addMethodref(SORT_ITERATOR, "<init>",
                                      "("
                                      + NODE_ITERATOR_SIG
                                      + NODE_SORT_FACTORY_SIG
                                      + ")V");

    // Backwards branches are prohibited if an uninitialized object is
    // on the stack by section 4.9.4 of the JVM Specification, 2nd Ed.
    // We don't know whether this code might contain backwards branches
    // so we mustn't create the new object until after we've created
    // the suspect arguments to its constructor.  Instead we calculate
    // the values of the arguments to the constructor first, store them
    // in temporary variables, create the object and reload the
    // arguments from the temporaries to avoid the problem.

    LocalVariableGen nodesTemp =
        methodGen.addLocalVariable("sort_tmp1",
                                   Util.getJCRefType(NODE_ITERATOR_SIG),
                                   null, null);

    LocalVariableGen sortRecordFactoryTemp =
        methodGen.addLocalVariable("sort_tmp2",
                                  Util.getJCRefType(NODE_SORT_FACTORY_SIG),
                                  null, null);

    // Get the current node iterator
    if (nodeSet == null) {  // apply-templates default
        final int children = cpg.addInterfaceMethodref(DOM_INTF,
                                                       "getAxisIterator",
                                                       "(I)"+
                                                       NODE_ITERATOR_SIG);
        il.append(methodGen.loadDOM());
        il.append(new PUSH(cpg, Axis.CHILD));
        il.append(new INVOKEINTERFACE(children, 2));
    }
    else {
        nodeSet.translate(classGen, methodGen);
    }

    nodesTemp.setStart(il.append(new ASTORE(nodesTemp.getIndex())));

    // Compile the code for the NodeSortRecord producing class and pass
    // that as the last argument to the SortingIterator constructor.
    compileSortRecordFactory(sortObjects, classGen, methodGen);
    sortRecordFactoryTemp.setStart(
            il.append(new ASTORE(sortRecordFactoryTemp.getIndex())));

    il.append(new NEW(cpg.addClass(SORT_ITERATOR)));
    il.append(DUP);
    nodesTemp.setEnd(il.append(new ALOAD(nodesTemp.getIndex())));
    sortRecordFactoryTemp.setEnd(
            il.append(new ALOAD(sortRecordFactoryTemp.getIndex())));
    il.append(new INVOKESPECIAL(init));
}
 

/**
 * Set index where the reference to the DOM is stored.
 */
public void setDomIndex(int domIndex) {
    _aloadDom = new ALOAD(domIndex);
}