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: ObjectType.java,v 1.2.4.1 2005/09/12 11:45:54 pvedula Exp $
   */
  
  package jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util;
  
  import jaxp.sun.org.apache.bcel.internal.generic.ALOAD;
  import jaxp.sun.org.apache.bcel.internal.generic.ASTORE;
  import jaxp.sun.org.apache.bcel.internal.generic.BranchHandle;
  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.IFNULL;
  import jaxp.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL;
  import jaxp.sun.org.apache.bcel.internal.generic.Instruction;
  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.Constants;
  import jaxp.sun.org.apache.xalan.internal.utils.ObjectFactory;
  
  /**
   * @author Todd Miller
   * @author Santiago Pericas-Geertsen
   */
  public final class ObjectType extends Type {
  
      private String _javaClassName = "java.lang.Object";
      private Class  _clazz = java.lang.Object.class;
  
      /**
       * Used to represent a Java Class type such is required to support
       * non-static java functions.
       * @param javaClassName name of the class such as 'com.foo.Processor'
       */
      protected ObjectType(String javaClassName) {
          _javaClassName = javaClassName;
  
          try {
            _clazz = ObjectFactory.findProviderClass(javaClassName, true);
          }
          catch (ClassNotFoundException e) {
            _clazz = null;
          }
      }
  
      protected ObjectType(Class clazz) {
          _clazz = clazz;
          _javaClassName = clazz.getName();
      }
  
      /**
       * Must return the same value for all ObjectType instances. This is
       * needed in CastExpr to ensure the mapping table is used correctly.
       */
      public int hashCode() {
          return java.lang.Object.class.hashCode();
      }
  
      public boolean equals(Object obj) {
          return (obj instanceof ObjectType);
      }
  
      public String getJavaClassName() {
          return _javaClassName;
      }
  
      public Class getJavaClass() {
          return _clazz;
      }
  
      public String toString() {
          return _javaClassName;
      }
  
      public boolean identicalTo(Type other) {
          return this == other;
      }
  
      public String toSignature() {
          final StringBuffer result = new StringBuffer("L");
          result.append(_javaClassName.replace('.', '/')).append(';');
          return result.toString();
      }
  
      public jaxp.sun.org.apache.bcel.internal.generic.Type toJCType() {
          return Util.getJCRefType(toSignature());
      }
  
      /**
       * Translates a void into an object of internal type <code>type</code>.
       * This translation is needed when calling external functions
       * that return void.
       *
       * @see     Type#translateTo
       */
      public void translateTo(ClassGenerator classGen, MethodGenerator methodGen,
                              Type type) {
          if (type == String) {
              translateTo(classGen, methodGen, (StringType) type);
          }
          else {
              ErrorMsg err = new ErrorMsg(ErrorMsg.DATA_CONVERSION_ERR,
                                          toString(), type.toString());
              classGen.getParser().reportError(Constants.FATAL, err);
          }
      }
  
      /**
       * Expects an integer on the stack and pushes its string value by calling
       * <code>Integer.toString(int i)</code>.
       *
       * @see     Type#translateTo
       */
      public void translateTo(ClassGenerator classGen, MethodGenerator methodGen,
                              StringType type) {
          final ConstantPoolGen cpg = classGen.getConstantPool();
          final InstructionList il = methodGen.getInstructionList();
  
          il.append(DUP);
          final BranchHandle ifNull = il.append(new IFNULL(null));
          il.append(new INVOKEVIRTUAL(cpg.addMethodref(_javaClassName,
                                                      "toString",
                                                      "()" + STRING_SIG)));
          final BranchHandle gotobh = il.append(new GOTO(null));
          ifNull.setTarget(il.append(POP));
          il.append(new PUSH(cpg, ""));
          gotobh.setTarget(il.append(NOP));
      }
  
      /**
       * Translates an object of this type to the external (Java) type denoted
       * by <code>clazz</code>. This method is used to translate parameters
       * when external functions are called.
       */
      public void translateTo(ClassGenerator classGen, MethodGenerator methodGen,
                              Class clazz) {
          if (clazz.isAssignableFrom(_clazz))
              methodGen.getInstructionList().append(NOP);
          else {
              ErrorMsg err = new ErrorMsg(ErrorMsg.DATA_CONVERSION_ERR,
                                 toString(), clazz.getClass().toString());
              classGen.getParser().reportError(Constants.FATAL, err);
          }
      }
  
      /**
       * Translates an external Java type into an Object type
       */
      public void translateFrom(ClassGenerator classGen,
                                MethodGenerator methodGen, Class clazz) {
          methodGen.getInstructionList().append(NOP);
      }
  
      public Instruction LOAD(int slot) {
          return new ALOAD(slot);
      }
  
      public Instruction STORE(int slot) {
          return new ASTORE(slot);
      }
  }
  