content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  /*
   * Copyright 2001-2004 The Apache Software Foundation.
   *
   * Licensed 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 jaxp.sun.org.apache.xalan.internal.xsltc.compiler;
  
  import java.util.Vector;
  
  import jaxp.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
  import jaxp.sun.org.apache.bcel.internal.generic.INVOKESTATIC;
  import jaxp.sun.org.apache.bcel.internal.generic.InstructionList;
  import jaxp.sun.org.apache.bcel.internal.generic.PUSH;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.Util;
  
  /**
   * @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) {
  
          Vector children = getContents();
          if (children != null) {
              final int count = children.size();
              for (int i = 0; i < count; i++) {
                  SyntaxTreeNode child = (SyntaxTreeNode)children.elementAt(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));
          }
      }
  }
  