| /* |
| * @(#)$Id$ |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2001-2003 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 2001, Sun |
| * Microsystems., http://www.sun.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| * @author Jacek Ambroziak |
| * @author Santiago Pericas-Geertsen |
| * |
| */ |
| |
| package org.apache.xalan.xsltc.compiler; |
| |
| import java.util.Enumeration; |
| import java.util.Vector; |
| |
| import org.apache.bcel.generic.ConstantPoolGen; |
| import org.apache.bcel.generic.INVOKEINTERFACE; |
| import org.apache.bcel.generic.INVOKEVIRTUAL; |
| import org.apache.bcel.generic.InstructionList; |
| import org.apache.xalan.xsltc.compiler.util.ClassGenerator; |
| import org.apache.xalan.xsltc.compiler.util.ErrorMsg; |
| import org.apache.xalan.xsltc.compiler.util.MethodGenerator; |
| import org.apache.xalan.xsltc.compiler.util.NodeSetType; |
| import org.apache.xalan.xsltc.compiler.util.NodeType; |
| import org.apache.xalan.xsltc.compiler.util.ReferenceType; |
| import org.apache.xalan.xsltc.compiler.util.ResultTreeType; |
| import org.apache.xalan.xsltc.compiler.util.Type; |
| import org.apache.xalan.xsltc.compiler.util.TypeCheckError; |
| import org.apache.xalan.xsltc.compiler.util.Util; |
| |
| final class ApplyTemplates extends Instruction { |
| private Expression _select; |
| private Type _type = null; |
| private QName _modeName; |
| private String _functionName; |
| |
| public void display(int indent) { |
| indent(indent); |
| Util.println("ApplyTemplates"); |
| indent(indent + IndentIncrement); |
| Util.println("select " + _select.toString()); |
| if (_modeName != null) { |
| indent(indent + IndentIncrement); |
| Util.println("mode " + _modeName); |
| } |
| } |
| |
| public boolean hasWithParams() { |
| return hasContents(); |
| } |
| |
| public void parseContents(Parser parser) { |
| final String select = getAttribute("select"); |
| final String mode = getAttribute("mode"); |
| |
| if (select.length() > 0) { |
| _select = parser.parseExpression(this, "select", null); |
| |
| // Wrap _select in a ForwardPositionExpr |
| final Expression fpe = new ForwardPositionExpr(_select); |
| _select.setParent(fpe); |
| fpe.setParser(_select.getParser()); |
| _select = fpe; |
| } |
| |
| if (mode.length() > 0) { |
| _modeName = parser.getQNameIgnoreDefaultNs(mode); |
| } |
| |
| // instantiate Mode if needed, cache (apply temp) function name |
| _functionName = |
| parser.getTopLevelStylesheet().getMode(_modeName).functionName(); |
| parseChildren(parser);// with-params |
| } |
| |
| public Type typeCheck(SymbolTable stable) throws TypeCheckError { |
| if (_select != null) { |
| _type = _select.typeCheck(stable); |
| if (_type instanceof NodeType || _type instanceof ReferenceType) { |
| _select = new CastExpr(_select, Type.NodeSet); |
| _type = Type.NodeSet; |
| } |
| if (_type instanceof NodeSetType||_type instanceof ResultTreeType) { |
| typeCheckContents(stable); // with-params |
| return Type.Void; |
| } |
| throw new TypeCheckError(this); |
| } |
| else { |
| typeCheckContents(stable); // with-params |
| return Type.Void; |
| } |
| } |
| |
| /** |
| * Translate call-template. A parameter frame is pushed only if |
| * some template in the stylesheet uses parameters. |
| */ |
| public void translate(ClassGenerator classGen, MethodGenerator methodGen) { |
| boolean setStartNodeCalled = false; |
| final Stylesheet stylesheet = classGen.getStylesheet(); |
| final ConstantPoolGen cpg = classGen.getConstantPool(); |
| final InstructionList il = methodGen.getInstructionList(); |
| final int current = methodGen.getLocalIndex("current"); |
| |
| // check if sorting nodes is required |
| final Vector sortObjects = new Vector(); |
| final Enumeration children = elements(); |
| while (children.hasMoreElements()) { |
| final Object child = children.nextElement(); |
| if (child instanceof Sort) { |
| sortObjects.addElement(child); |
| } |
| } |
| |
| // Push a new parameter frame |
| if (stylesheet.hasLocalParams() || hasContents()) { |
| il.append(classGen.loadTranslet()); |
| final int pushFrame = cpg.addMethodref(TRANSLET_CLASS, |
| PUSH_PARAM_FRAME, |
| PUSH_PARAM_FRAME_SIG); |
| il.append(new INVOKEVIRTUAL(pushFrame)); |
| // translate with-params |
| translateContents(classGen, methodGen); |
| } |
| |
| |
| il.append(classGen.loadTranslet()); |
| |
| // The 'select' expression is a result-tree |
| if ((_type != null) && (_type instanceof ResultTreeType)) { |
| // <xsl:sort> cannot be applied to a result tree - issue warning |
| if (sortObjects.size() > 0) { |
| ErrorMsg err = new ErrorMsg(ErrorMsg.RESULT_TREE_SORT_ERR,this); |
| getParser().reportError(WARNING, err); |
| } |
| // Put the result tree (a DOM adapter) on the stack |
| _select.translate(classGen, methodGen); |
| // Get back the DOM and iterator (not just iterator!!!) |
| _type.translateTo(classGen, methodGen, Type.NodeSet); |
| } |
| else { |
| il.append(methodGen.loadDOM()); |
| |
| // compute node iterator for applyTemplates |
| if (sortObjects.size() > 0) { |
| Sort.translateSortIterator(classGen, methodGen, |
| _select, sortObjects); |
| int setStartNode = cpg.addInterfaceMethodref(NODE_ITERATOR, |
| SET_START_NODE, |
| "(I)"+ |
| NODE_ITERATOR_SIG); |
| il.append(methodGen.loadCurrentNode()); |
| il.append(new INVOKEINTERFACE(setStartNode,2)); |
| setStartNodeCalled = true; |
| } |
| else { |
| if (_select == null) |
| Mode.compileGetChildren(classGen, methodGen, current); |
| else |
| _select.translate(classGen, methodGen); |
| } |
| } |
| |
| if (_select != null && !setStartNodeCalled) { |
| _select.startResetIterator(classGen, methodGen); |
| } |
| |
| //!!! need to instantiate all needed modes |
| final String className = classGen.getStylesheet().getClassName(); |
| il.append(methodGen.loadHandler()); |
| final String applyTemplatesSig = classGen.getApplyTemplatesSig(); |
| final int applyTemplates = cpg.addMethodref(className, |
| _functionName, |
| applyTemplatesSig); |
| il.append(new INVOKEVIRTUAL(applyTemplates)); |
| |
| // Pop parameter frame |
| if (stylesheet.hasLocalParams() || hasContents()) { |
| il.append(classGen.loadTranslet()); |
| final int popFrame = cpg.addMethodref(TRANSLET_CLASS, |
| POP_PARAM_FRAME, |
| POP_PARAM_FRAME_SIG); |
| il.append(new INVOKEVIRTUAL(popFrame)); |
| } |
| } |
| } |