final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
final LocalVariableGen name =
methodGen.addLocalVariable2("name",
Util.getJCRefType(STRING_SIG),
il.getEnd());
final LocalVariableGen length =
methodGen.addLocalVariable2("length",
Util.getJCRefType("I"),
il.getEnd());
// Get the name of the node to copy and save for later
il.append(methodGen.loadDOM());
il.append(methodGen.loadCurrentNode());
il.append(methodGen.loadHandler());
final int cpy = cpg.addInterfaceMethodref(DOM_INTF,
"shallowCopy",
"("
+ NODE_SIG
+ TRANSLET_OUTPUT_SIG
+ ")" + STRING_SIG);
il.append(new INVOKEINTERFACE(cpy, 3));
il.append(DUP);
il.append(new ASTORE(name.getIndex()));
final BranchHandle ifBlock1 = il.append(new IFNULL(null));
// Get the length of the node name and save for later
il.append(new ALOAD(name.getIndex()));
final int lengthMethod = cpg.addMethodref(STRING_CLASS,"length","()I");
il.append(new INVOKEVIRTUAL(lengthMethod));
il.append(new ISTORE(length.getIndex()));
// Copy in attribute sets if specified
if (_useSets != null) {
// If the parent of this element will result in an element being
// output then we know that it is safe to copy out the attributes
final SyntaxTreeNode parent = getParent();
if ((parent instanceof LiteralElement) ||
(parent instanceof LiteralElement)) {
_useSets.translate(classGen, methodGen);
}
// If not we have to check to see if the copy will result in an
// element being output.
else {
// check if element; if not skip to translate body
il.append(new ILOAD(length.getIndex()));
final BranchHandle ifBlock2 = il.append(new IFEQ(null));
// length != 0 -> element -> do attribute sets
_useSets.translate(classGen, methodGen);
// not an element; root
ifBlock2.setTarget(il.append(NOP));
}
}
// Instantiate body of xsl:copy
translateContents(classGen, methodGen);
// Call the output handler's endElement() if we copied an element
// (The DOM.shallowCopy() method calls startElement().)
il.append(new ILOAD(length.getIndex()));
final BranchHandle ifBlock3 = il.append(new IFEQ(null));
il.append(methodGen.loadHandler());
il.append(new ALOAD(name.getIndex()));
il.append(methodGen.endElement());
final InstructionHandle end = il.append(NOP);
ifBlock1.setTarget(end);
ifBlock3.setTarget(end);
methodGen.removeLocalVariable(name);
methodGen.removeLocalVariable(length);
