1 /*
   2  * Copyright (c) 1999, 2000, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 /*
  26  * COMPONENT_NAME: idl.toJava
  27  *
  28  * ORIGINS: 27
  29  *
  30  * Licensed Materials - Property of IBM
  31  * 5639-D57 (C) COPYRIGHT International Business Machines Corp. 1997, 1999
  32  * RMI-IIOP v1.0
  33  *
  34  */
  35 
  36 package com.sun.tools.corba.se.idl.toJavaPortable;
  37 
  38 // NOTES:
  39 // -D61056   <klr> Use Util.helperName
  40 
  41 import java.io.PrintWriter;
  42 import java.util.Hashtable;
  43 
  44 import com.sun.tools.corba.se.idl.StringEntry;
  45 import com.sun.tools.corba.se.idl.SymtabEntry;
  46 
  47 /**
  48  * Handles generation of CORBA strings as well as wstrings.  Be careful
  49  * not to forget the wstrings.
  50  **/
  51 public class StringGen implements com.sun.tools.corba.se.idl.StringGen, JavaGenerator
  52 {
  53   /**
  54    * Public zero-argument constructor.
  55    **/
  56   public StringGen ()
  57   {
  58   } // ctor
  59 
  60   /**
  61    * This should never be called.  This class exists for the
  62    * JavaGenerator interface.
  63    **/
  64   public void generate (Hashtable symbolTable, StringEntry e, PrintWriter stream)
  65   {
  66   } // generate
  67 
  68   ///////////////
  69   // From JavaGenerator
  70 
  71   public int helperType (int index, String indent, TCOffsets tcoffsets, String name, SymtabEntry entry, PrintWriter stream)
  72   {
  73     return type(index, indent, tcoffsets, name, entry, stream);
  74   } // helperType
  75 
  76   public int type (int index, String indent, TCOffsets tcoffsets, String name, SymtabEntry entry, PrintWriter stream) {
  77     tcoffsets.set (entry);
  78     StringEntry stringEntry = (StringEntry)entry;
  79     String bound;
  80     if (stringEntry.maxSize () == null)
  81       bound = "0";
  82     else
  83       bound = Util.parseExpression (stringEntry.maxSize ());
  84 
  85     // entry.name() is necessary to determine whether it is a
  86     // string or wstring
  87 
  88     stream.println (indent
  89                     + name
  90                     + " = org.omg.CORBA.ORB.init ().create_"
  91                     + entry.name()
  92                     + "_tc ("
  93                     + bound + ");");
  94     return index;
  95   } // type
  96 
  97   public void helperRead (String entryName, SymtabEntry entry, PrintWriter stream)
  98   {
  99   } // helperRead
 100 
 101   public void helperWrite (SymtabEntry entry, PrintWriter stream)
 102   {
 103   } // helperWrite
 104 
 105   public int read (int index, String indent, String name, SymtabEntry entry, PrintWriter stream)
 106   {
 107     StringEntry string = (StringEntry)entry;
 108     String entryName = entry.name ();
 109     if (entryName.equals ("string"))
 110       stream.println (indent + name + " = istream.read_string ();");
 111     else if (entryName.equals ("wstring"))
 112       stream.println (indent + name + " = istream.read_wstring ();");
 113     if (string.maxSize () != null)
 114     {
 115       stream.println (indent + "if (" + name + ".length () > (" + Util.parseExpression (string.maxSize ()) + "))");
 116       stream.println (indent + "  throw new org.omg.CORBA.MARSHAL (0, org.omg.CORBA.CompletionStatus.COMPLETED_MAYBE);");
 117     }
 118     return index;
 119   } // read
 120 
 121   public int write (int index, String indent, String name, SymtabEntry entry, PrintWriter stream)
 122   {
 123     StringEntry string = (StringEntry)entry;
 124     if (string.maxSize () != null)
 125     {
 126       stream.print (indent + "if (" + name + ".length () > (" + Util.parseExpression (string.maxSize ()) + "))");
 127       stream.println (indent + "  throw new org.omg.CORBA.MARSHAL (0, org.omg.CORBA.CompletionStatus.COMPLETED_MAYBE);");
 128     }
 129     String entryName = entry.name ();
 130     if (entryName.equals ("string"))
 131       stream.println (indent + "ostream.write_string (" + name + ");");
 132     else if (entryName.equals ("wstring"))
 133       stream.println (indent + "ostream.write_wstring (" + name + ");");
 134     return index;
 135   } // write
 136 
 137   // From JavaGenerator
 138   ///////////////
 139 } // class StringGen