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: ApplyTemplates.java,v 1.2.4.1 2005/09/12 09:59:21 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.INVOKEINTERFACE;
  import jaxp.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL;
  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.NodeSetType;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.NodeType;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.ReferenceType;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.ResultTreeType;
  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
   */
  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 sortObjects = new Vector();
          final Enumeration children = elements();
          while (children.hasMoreElements()) {
              final Object child = children.nextElement();
              if (child instanceof Sort) {
                  sortObjects.addElement(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));
  
          // 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));
          }
      }
  }
  