| /* |
| * Copyright (c) 2015, 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. |
| */ |
| /* |
| * $Id: UnsupportedElement.java,v 1.2.4.1 2005/09/05 09:26:51 pvedula Exp $ |
| */ |
| |
| package com.sun.org.apache.xalan.internal.xsltc.compiler; |
| |
| import java.util.Vector; |
| |
| import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen; |
| import com.sun.org.apache.bcel.internal.generic.INVOKESTATIC; |
| import com.sun.org.apache.bcel.internal.generic.InstructionList; |
| import com.sun.org.apache.bcel.internal.generic.PUSH; |
| |
| 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.Type; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError; |
| import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Util; |
| import java.util.List; |
| |
| /** |
| * @author Morten Jorgensen |
| */ |
| final class UnsupportedElement extends SyntaxTreeNode { |
| |
| private Vector _fallbacks = null; |
| private ErrorMsg _message = null; |
| private boolean _isExtension = false; |
| |
| /** |
| * Basic consutrcor - stores element uri/prefix/localname |
| */ |
| public UnsupportedElement(String uri, String prefix, String local, boolean isExtension) { |
| super(uri, prefix, local); |
| _isExtension = isExtension; |
| } |
| |
| /** |
| * There are different categories of unsupported elements (believe it |
| * or not): there are elements within the XSLT namespace (these would |
| * be elements that are not yet implemented), there are extensions of |
| * other XSLT processors and there are unrecognised extension elements |
| * of this XSLT processor. The error message passed to this method |
| * should describe the unsupported element itself and what category |
| * the element belongs in. |
| */ |
| public void setErrorMessage(ErrorMsg message) { |
| _message = message; |
| } |
| |
| /** |
| * Displays the contents of this element |
| */ |
| public void display(int indent) { |
| indent(indent); |
| Util.println("Unsupported element = " + _qname.getNamespace() + |
| ":" + _qname.getLocalPart()); |
| displayContents(indent + IndentIncrement); |
| } |
| |
| |
| /** |
| * Scan and process all fallback children of the unsupported element. |
| */ |
| private void processFallbacks(Parser parser) { |
| |
| List<SyntaxTreeNode> children = getContents(); |
| if (children != null) { |
| final int count = children.size(); |
| for (int i = 0; i < count; i++) { |
| SyntaxTreeNode child = children.get(i); |
| if (child instanceof Fallback) { |
| Fallback fallback = (Fallback)child; |
| fallback.activate(); |
| fallback.parseContents(parser); |
| if (_fallbacks == null) { |
| _fallbacks = new Vector(); |
| } |
| _fallbacks.addElement(child); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Find any fallback in the descendant nodes; then activate & parse it |
| */ |
| public void parseContents(Parser parser) { |
| processFallbacks(parser); |
| } |
| |
| /** |
| * Run type check on the fallback element (if any). |
| */ |
| public Type typeCheck(SymbolTable stable) throws TypeCheckError { |
| if (_fallbacks != null) { |
| int count = _fallbacks.size(); |
| for (int i = 0; i < count; i++) { |
| Fallback fallback = (Fallback)_fallbacks.elementAt(i); |
| fallback.typeCheck(stable); |
| } |
| } |
| return Type.Void; |
| } |
| |
| /** |
| * Translate the fallback element (if any). |
| */ |
| public void translate(ClassGenerator classGen, MethodGenerator methodGen) { |
| if (_fallbacks != null) { |
| int count = _fallbacks.size(); |
| for (int i = 0; i < count; i++) { |
| Fallback fallback = (Fallback)_fallbacks.elementAt(i); |
| fallback.translate(classGen, methodGen); |
| } |
| } |
| // We only go into the else block in forward-compatibility mode, when |
| // the unsupported element has no fallback. |
| else { |
| // If the unsupported element does not have any fallback child, then |
| // at runtime, a runtime error should be raised when the unsupported |
| // element is instantiated. Otherwise, no error is thrown. |
| ConstantPoolGen cpg = classGen.getConstantPool(); |
| InstructionList il = methodGen.getInstructionList(); |
| |
| final int unsupportedElem = cpg.addMethodref(BASIS_LIBRARY_CLASS, "unsupported_ElementF", |
| "(" + STRING_SIG + "Z)V"); |
| il.append(new PUSH(cpg, getQName().toString())); |
| il.append(new PUSH(cpg, _isExtension)); |
| il.append(new INVOKESTATIC(unsupportedElem)); |
| } |
| } |
| } |