| /* |
| * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
| */ |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.sun.org.apache.xalan.internal.xsltc.compiler; |
| |
| import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen; |
| import com.sun.org.apache.bcel.internal.generic.INVOKEINTERFACE; |
| import com.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL; |
| import com.sun.org.apache.bcel.internal.generic.InstructionList; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.NodeSetType; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.NodeType; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ReferenceType; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ResultTreeType; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Util; |
| import com.sun.org.apache.xml.internal.utils.XML11Char; |
| import java.util.Iterator; |
| import java.util.Vector; |
| |
| /** |
| * @author Jacek Ambroziak |
| * @author Santiago Pericas-Geertsen |
| */ |
| 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); |
| |
| } |
| |
| if (mode.length() > 0) { |
| if (!XML11Char.isXML11ValidQName(mode)) { |
| ErrorMsg err = new ErrorMsg(ErrorMsg.INVALID_QNAME_ERR, mode, this); |
| parser.reportError(Constants.ERROR, err); |
| } |
| _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<Sort> sortObjects = new Vector<>(); |
| for (final SyntaxTreeNode child : getContents()) { |
| if (child instanceof Sort) { |
| sortObjects.addElement((Sort)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.startIterator(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)); |
| |
| // unmap parameters to release temporary result trees |
| for (final SyntaxTreeNode child : getContents()) { |
| if (child instanceof WithParam) { |
| ((WithParam)child).releaseResultTree(classGen, methodGen); |
| } |
| } |
| |
| // 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)); |
| } |
| } |
| } |
