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: UseAttributeSets.java,v 1.5 2005/09/28 13:48:17 pvedula Exp $
   */
  
  package jaxp.sun.org.apache.xalan.internal.xsltc.compiler;
  
  import java.util.StringTokenizer;
  import java.util.Vector;
  
  import jaxp.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
  import jaxp.sun.org.apache.bcel.internal.generic.INVOKESPECIAL;
  import jaxp.sun.org.apache.bcel.internal.generic.InstructionList;
  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;
  
  /**
   * @author Jacek Ambroziak
   * @author Santiago Pericas-Geertsen
   * @author Morten Jorgensen
   */
  final class UseAttributeSets extends Instruction {
  
      // Only error that can occur:
      private final static String ATTR_SET_NOT_FOUND =
          "";
  
      // Contains the names of all references attribute sets
      private final Vector _sets = new Vector(2);
  
      /**
       * Constructur - define initial attribute sets to use
       */
      public UseAttributeSets(String setNames, Parser parser) {
          setParser(parser);
          addAttributeSets(setNames);
      }
  
      /**
       * This method is made public to enable an AttributeSet object to merge
       * itself with another AttributeSet (including any other AttributeSets
       * the two may inherit from).
       */
      public void addAttributeSets(String setNames) {
          if ((setNames != null) && (!setNames.equals(EMPTYSTRING))) {
              final StringTokenizer tokens = new StringTokenizer(setNames);
              while (tokens.hasMoreTokens()) {
                  final QName qname =
                      getParser().getQNameIgnoreDefaultNs(tokens.nextToken());
                  _sets.add(qname);
              }
          }
      }
  
      /**
       * Do nada.
       */
      public Type typeCheck(SymbolTable stable) throws TypeCheckError {
          return Type.Void;
      }
  
      /**
       * Generate a call to the method compiled for this attribute set
       */
      public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
  
          final ConstantPoolGen cpg = classGen.getConstantPool();
          final InstructionList il = methodGen.getInstructionList();
          final SymbolTable symbolTable = getParser().getSymbolTable();
  
          // Go through each attribute set and generate a method call
          for (int i=0; i<_sets.size(); i++) {
              // Get the attribute set name
              final QName name = (QName)_sets.elementAt(i);
              // Get the AttributeSet reference from the symbol table
              final AttributeSet attrs = symbolTable.lookupAttributeSet(name);
              // Compile the call to the set's method if the set exists
              if (attrs != null) {
                  final String methodName = attrs.getMethodName();
                  il.append(classGen.loadTranslet());
                  il.append(methodGen.loadDOM());
                  il.append(methodGen.loadIterator());
                  il.append(methodGen.loadHandler());
                  il.append(methodGen.loadCurrentNode());
                  final int method = cpg.addMethodref(classGen.getClassName(),
                                                      methodName, ATTR_SET_SIG);
                  il.append(new INVOKESPECIAL(method));
              }
              // Generate an error if the attribute set does not exist
              else {
                  final Parser parser = getParser();
                  final String atrs = name.toString();
                  reportError(this, parser, ErrorMsg.ATTRIBSET_UNDEF_ERR, atrs);
              }
          }
      }
  }
  