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: AttributeSet.java,v 1.5 2005/09/28 13:48:04 pvedula Exp $
   */
  
  package jaxp.sun.org.apache.xalan.internal.xsltc.compiler;
  
  import java.util.Enumeration;
  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.AttributeSetMethodGenerator;
  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;
  import jaxp.sun.org.apache.xml.internal.utils.XML11Char;
  
  /**
   * @author Jacek Ambroziak
   * @author Santiago Pericas-Geertsen
   * @author Morten Jorgensen
   */
  final class AttributeSet extends TopLevelElement {
  
      // This prefix is used for the method name of attribute set methods
      private static final String AttributeSetPrefix = "$as$";
  
      // Element contents
      private QName            _name;
      private UseAttributeSets _useSets;
      private AttributeSet     _mergeSet;
      private String           _method;
      private boolean          _ignore = false;
  
      /**
       * Returns the QName of this attribute set
       */
      public QName getName() {
          return _name;
      }
  
      /**
       * Returns the method name of this attribute set. This method name is
       * generated by the compiler (XSLTC)
       */
      public String getMethodName() {
          return _method;
      }
  
      /**
       * Call this method to prevent a method for being compiled for this set.
       * This is used in case several <xsl:attribute-set...> elements constitute
       * a single set (with one name). The last element will merge itself with
       * any previous set(s) with the same name and disable the other set(s).
       */
      public void ignore() {
          _ignore = true;
      }
  
      /**
       * Parse the contents of this attribute set. Recognised attributes are
       * "name" (required) and "use-attribute-sets" (optional).
       */
      public void parseContents(Parser parser) {
  
          // Get this attribute set's name
          final String name = getAttribute("name");
  
          if (!XML11Char.isXML11ValidQName(name)) {
              ErrorMsg err = new ErrorMsg(ErrorMsg.INVALID_QNAME_ERR, name, this);
              parser.reportError(ERROR, err);
          }
          _name = parser.getQNameIgnoreDefaultNs(name);
          if ((_name == null) || (_name.equals(EMPTYSTRING))) {
              ErrorMsg msg = new ErrorMsg(ErrorMsg.UNNAMED_ATTRIBSET_ERR, this);
              parser.reportError(ERROR, msg);
          }
  
          // Get any included attribute sets (similar to inheritance...)
          final String useSets = getAttribute("use-attribute-sets");
          if (useSets.length() > 0) {
              if (!Util.isValidQNames(useSets)) {
                  ErrorMsg err = new ErrorMsg(ErrorMsg.INVALID_QNAME_ERR, useSets, this);
                  parser.reportError(ERROR, err);
              }
              _useSets = new UseAttributeSets(useSets, parser);
          }
  
          // Parse the contents of this node. All child elements must be
          // <xsl:attribute> elements. Other elements cause an error.
          final Vector contents = getContents();
          final int count = contents.size();
          for (int i=0; i<count; i++) {
              SyntaxTreeNode child = (SyntaxTreeNode)contents.elementAt(i);
              if (child instanceof XslAttribute) {
                  parser.getSymbolTable().setCurrentNode(child);
                  child.parseContents(parser);
              }
              else if (child instanceof Text) {
                  // ignore
              }
              else {
                  ErrorMsg msg = new ErrorMsg(ErrorMsg.ILLEGAL_CHILD_ERR, this);
                  parser.reportError(ERROR, msg);
              }
          }
  
          // Point the symbol table back at us...
          parser.getSymbolTable().setCurrentNode(this);
      }
  
      /**
       * Type check the contents of this element
       */
      public Type typeCheck(SymbolTable stable) throws TypeCheckError {
  
          if (_ignore) return (Type.Void);
  
          // _mergeSet Point to any previous definition of this attribute set
          _mergeSet = stable.addAttributeSet(this);
  
          _method = AttributeSetPrefix + getXSLTC().nextAttributeSetSerial();
  
          if (_useSets != null) _useSets.typeCheck(stable);
          typeCheckContents(stable);
          return Type.Void;
      }
  
      /**
       * Compile a method that outputs the attributes in this set
       */
      public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
  
          if (_ignore) return;
  
          // Create a new method generator for an attribute set method
          methodGen = new AttributeSetMethodGenerator(_method, classGen);
  
          // Generate a reference to previous attribute-set definitions with the
          // same name first.  Those later in the stylesheet take precedence.
          if (_mergeSet != null) {
              final ConstantPoolGen cpg = classGen.getConstantPool();
              final InstructionList il = methodGen.getInstructionList();
              final String methodName = _mergeSet.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));
          }
  
          // Translate other used attribute sets first, as local attributes
          // take precedence (last attributes overrides first)
          if (_useSets != null) _useSets.translate(classGen, methodGen);
  
          // Translate all local attributes
          final Enumeration attributes = elements();
          while (attributes.hasMoreElements()) {
              SyntaxTreeNode element = (SyntaxTreeNode)attributes.nextElement();
              if (element instanceof XslAttribute) {
                  final XslAttribute attribute = (XslAttribute)element;
                  attribute.translate(classGen, methodGen);
              }
          }
          final InstructionList il = methodGen.getInstructionList();
          il.append(RETURN);
  
          classGen.addMethod(methodGen);
      }
  
      public String toString() {
          StringBuffer buf = new StringBuffer("attribute-set: ");
          // Translate all local attributes
          final Enumeration attributes = elements();
          while (attributes.hasMoreElements()) {
              final XslAttribute attribute =
                  (XslAttribute)attributes.nextElement();
              buf.append(attribute);
          }
          return(buf.toString());
      }
  }
  