/** * Expects an integer on the stack and pushes its string value by calling * <code>Integer.toString(int i)</code>. * * @see com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type#translateTo */ public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, StringType type) { final ConstantPoolGen cpg = classGen.getConstantPool(); final InstructionList il = methodGen.getInstructionList(); il.append(DUP); final BranchHandle ifNull = il.append(new IFNULL(null)); il.append(new INVOKEVIRTUAL(cpg.addMethodref(_javaClassName, "toString", "()" + STRING_SIG))); final BranchHandle gotobh = il.append(new GOTO(null)); ifNull.setTarget(il.append(POP)); il.append(new PUSH(cpg, "")); gotobh.setTarget(il.append(NOP)); }
public void translate(ClassGenerator classGen, MethodGenerator methodGen) { final ConstantPoolGen cpg = classGen.getConstantPool(); final InstructionList il = methodGen.getInstructionList(); final LocalVariableGen name = methodGen.addLocalVariable2("name", Util.getJCRefType(STRING_SIG), null); final LocalVariableGen length = methodGen.addLocalVariable2("length", Util.getJCRefType("I"), null); // 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); name.setStart(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(DUP); length.setStart(il.append(new ISTORE(length.getIndex()))); // Ignore attribute sets if current node is ROOT. DOM.shallowCopy() // returns "" for ROOT, so skip attribute sets if length == 0 final BranchHandle ifBlock4 = il.append(new IFEQ(null)); // 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 ifBlock4.setTarget(il.append(NOP)); translateContents(classGen, methodGen); // Call the output handler's endElement() if we copied an element // (The DOM.shallowCopy() method calls startElement().) length.setEnd(il.append(new ILOAD(length.getIndex()))); final BranchHandle ifBlock3 = il.append(new IFEQ(null)); il.append(methodGen.loadHandler()); name.setEnd(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); }
