/** * This method is called if the "use" attribute of the key contains a * node set. In this case we must traverse all nodes in the set and * create one entry in this key's index for each node in the set. */ public void traverseNodeSet(ClassGenerator classGen, MethodGenerator methodGen, int buildKeyIndex) { final ConstantPoolGen cpg = classGen.getConstantPool(); final InstructionList il = methodGen.getInstructionList(); // DOM.getStringValueX(nodeIndex) => String final int getNodeValue = cpg.addInterfaceMethodref(DOM_INTF, GET_NODE_VALUE, "(I)"+STRING_SIG); final int getNodeIdent = cpg.addInterfaceMethodref(DOM_INTF, "getNodeIdent", "(I)"+NODE_SIG); // AbstractTranslet.SetKeyIndexDom(name, Dom) => void final int keyDom = cpg.addMethodref(TRANSLET_CLASS, "setKeyIndexDom", "("+STRING_SIG+DOM_INTF_SIG+")V"); // This variable holds the id of the node we found with the "match" // attribute of xsl:key. This is the id we store, with the value we // get from the nodes we find here, in the index for this key. final LocalVariableGen parentNode = methodGen.addLocalVariable("parentNode", Util.getJCRefType("I"), null, null); // Get the 'parameter' from the stack and store it in a local var. parentNode.setStart(il.append(new ISTORE(parentNode.getIndex()))); // Save current node and current iterator on the stack il.append(methodGen.loadCurrentNode()); il.append(methodGen.loadIterator()); // Overwrite current iterator with one that gives us only what we want _use.translate(classGen, methodGen); _use.startIterator(classGen, methodGen); il.append(methodGen.storeIterator()); final BranchHandle nextNode = il.append(new GOTO(null)); final InstructionHandle loop = il.append(NOP); // Prepare to call buildKeyIndex(String name, int node, String value); il.append(classGen.loadTranslet()); il.append(new PUSH(cpg, _name.toString())); parentNode.setEnd(il.append(new ILOAD(parentNode.getIndex()))); // Now get the node value and push it on the parameter stack il.append(methodGen.loadDOM()); il.append(methodGen.loadCurrentNode()); il.append(new INVOKEINTERFACE(getNodeValue, 2)); // Finally do the call to add an entry in the index for this key. il.append(new INVOKEVIRTUAL(buildKeyIndex)); il.append(classGen.loadTranslet()); il.append(new PUSH(cpg, getName())); il.append(methodGen.loadDOM()); il.append(new INVOKEVIRTUAL(keyDom)); nextNode.setTarget(il.append(methodGen.loadIterator())); il.append(methodGen.nextNode()); il.append(DUP); il.append(methodGen.storeCurrentNode()); il.append(new IFGE(loop)); // Go on to next matching node.... // Restore current node and current iterator from the stack il.append(methodGen.storeIterator()); il.append(methodGen.storeCurrentNode()); }
public BranchInstruction GE(boolean tozero) { return tozero ? (BranchInstruction) new IFGE(null) : (BranchInstruction) new IF_ICMPGE(null); }