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: IdKeyPattern.java,v 1.5 2005/09/28 13:48:10 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.GOTO;
  import jaxp.sun.org.apache.bcel.internal.generic.IFNE;
  import jaxp.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL;
  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.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
   */
  abstract class IdKeyPattern extends LocationPathPattern {
  
      protected RelativePathPattern _left = null;;
      private String _index = null;
      private String _value = null;;
  
      public IdKeyPattern(String index, String value) {
          _index = index;
          _value = value;
      }
  
      public String getIndexName() {
          return(_index);
      }
  
      public Type typeCheck(SymbolTable stable) throws TypeCheckError {
          return Type.NodeSet;
      }
  
      public boolean isWildcard() {
          return false;
      }
  
      public void setLeft(RelativePathPattern left) {
          _left = left;
      }
  
      public StepPattern getKernelPattern() {
          return(null);
      }
  
      public void reduceKernelPattern() { }
  
      public String toString() {
          return "id/keyPattern(" + _index + ", " + _value + ')';
      }
  
      /**
       * This method is called when the constructor is compiled in
       * Stylesheet.compileConstructor() and not as the syntax tree is traversed.
       */
      public void translate(ClassGenerator classGen,
                            MethodGenerator methodGen) {
  
          final ConstantPoolGen cpg = classGen.getConstantPool();
          final InstructionList il = methodGen.getInstructionList();
  
          // Returns the KeyIndex object of a given name
          final int getKeyIndex = cpg.addMethodref(TRANSLET_CLASS,
                                                   "getKeyIndex",
                                                   "(Ljava/lang/String;)"+
                                                   KEY_INDEX_SIG);
  
          // Initialises a KeyIndex to return nodes with specific values
          final int lookupId = cpg.addMethodref(KEY_INDEX_CLASS,
                                                "containsID",
                                                "(ILjava/lang/Object;)I");
          final int lookupKey = cpg.addMethodref(KEY_INDEX_CLASS,
                                                 "containsKey",
                                                 "(ILjava/lang/Object;)I");
          final int getNodeIdent = cpg.addInterfaceMethodref(DOM_INTF,
                                                             "getNodeIdent",
                                                             "(I)"+NODE_SIG);
  
          // Call getKeyIndex in AbstractTranslet with the name of the key
          // to get the index for this key (which is also a node iterator).
          il.append(classGen.loadTranslet());
          il.append(new PUSH(cpg,_index));
          il.append(new INVOKEVIRTUAL(getKeyIndex));
  
          // Now use the value in the second argument to determine what nodes
          // the iterator should return.
          il.append(SWAP);
          il.append(new PUSH(cpg,_value));
          if (this instanceof IdPattern)
          {
              il.append(new INVOKEVIRTUAL(lookupId));
          }
          else
          {
              il.append(new INVOKEVIRTUAL(lookupKey));
          }
  
          _trueList.add(il.append(new IFNE(null)));
          _falseList.add(il.append(new GOTO(null)));
      }
  
  }
  