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: CopyOf.java,v 1.2.4.1 2005/09/01 12:16:22 pvedula Exp $
   */
  
  package jaxp.sun.org.apache.xalan.internal.xsltc.compiler;
  
  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.INVOKESTATIC;
  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;
  
  /**
   * @author Jacek Ambroziak
   * @author Santiago Pericas-Geertsen
   */
  final class CopyOf extends Instruction {
      private Expression _select;
  
      public void display(int indent) {
          indent(indent);
          Util.println("CopyOf");
          indent(indent + IndentIncrement);
          Util.println("select " + _select.toString());
      }
  
      public void parseContents(Parser parser) {
          _select = parser.parseExpression(this, "select", null);
          // make sure required attribute(s) have been set
          if (_select.isDummy()) {
              reportError(this, parser, ErrorMsg.REQUIRED_ATTR_ERR, "select");
              return;
          }
      }
  
      public Type typeCheck(SymbolTable stable) throws TypeCheckError {
          final Type tselect = _select.typeCheck(stable);
          if (tselect instanceof NodeType ||
              tselect instanceof NodeSetType ||
              tselect instanceof ReferenceType ||
              tselect instanceof ResultTreeType) {
              // falls through
          }
          else {
              _select = new CastExpr(_select, Type.String);
          }
          return Type.Void;
      }
  
      public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
          final ConstantPoolGen cpg = classGen.getConstantPool();
          final InstructionList il = methodGen.getInstructionList();
          final Type tselect = _select.getType();
  
          final String CPY1_SIG = "("+NODE_ITERATOR_SIG+TRANSLET_OUTPUT_SIG+")V";
          final int cpy1 = cpg.addInterfaceMethodref(DOM_INTF, "copy", CPY1_SIG);
  
          final String CPY2_SIG = "("+NODE_SIG+TRANSLET_OUTPUT_SIG+")V";
          final int cpy2 = cpg.addInterfaceMethodref(DOM_INTF, "copy", CPY2_SIG);
  
          final String getDoc_SIG = "()"+NODE_SIG;
          final int getDoc = cpg.addInterfaceMethodref(DOM_INTF, "getDocument", getDoc_SIG);
  
  
          if (tselect instanceof NodeSetType) {
              il.append(methodGen.loadDOM());
  
              // push NodeIterator
              _select.translate(classGen, methodGen);
              _select.startIterator(classGen, methodGen);
  
              // call copy from the DOM 'library'
              il.append(methodGen.loadHandler());
              il.append(new INVOKEINTERFACE(cpy1, 3));
          }
          else if (tselect instanceof NodeType) {
              il.append(methodGen.loadDOM());
              _select.translate(classGen, methodGen);
              il.append(methodGen.loadHandler());
              il.append(new INVOKEINTERFACE(cpy2, 3));
          }
          else if (tselect instanceof ResultTreeType) {
              _select.translate(classGen, methodGen);
              // We want the whole tree, so we start with the root node
              il.append(DUP); //need a pointer to the DOM ;
              il.append(new INVOKEINTERFACE(getDoc,1)); //ICONST_0);
              il.append(methodGen.loadHandler());
              il.append(new INVOKEINTERFACE(cpy2, 3));
          }
          else if (tselect instanceof ReferenceType) {
              _select.translate(classGen, methodGen);
              il.append(methodGen.loadHandler());
              il.append(methodGen.loadCurrentNode());
              il.append(methodGen.loadDOM());
              final int copy = cpg.addMethodref(BASIS_LIBRARY_CLASS, "copy",
                                                "("
                                                + OBJECT_SIG
                                                + TRANSLET_OUTPUT_SIG
                                                + NODE_SIG
                                                + DOM_INTF_SIG
                                                + ")V");
              il.append(new INVOKESTATIC(copy));
          }
          else {
              il.append(classGen.loadTranslet());
              _select.translate(classGen, methodGen);
              il.append(methodGen.loadHandler());
              il.append(new INVOKEVIRTUAL(cpg.addMethodref(TRANSLET_CLASS,
                                                           CHARACTERSW,
                                                           CHARACTERSW_SIG)));
          }
  
      }
  }
  