1 /*
   2  * Copyright (c) 1999, 2004, 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.parser
  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;
  37 
  38 // NOTES:
  39 
  40 import java.io.PrintWriter;
  41 import java.util.Hashtable;
  42 import java.util.Vector;
  43 
  44 import com.sun.tools.corba.se.idl.constExpr.Expression;
  45 
  46 /**
  47  * This is the symbol table entry for sequences.
  48  **/
  49 public class SequenceEntry extends SymtabEntry
  50 {
  51   protected SequenceEntry ()
  52   {
  53     super ();
  54     repositoryID (Util.emptyID);
  55   } // ctor
  56 
  57   protected SequenceEntry (SequenceEntry that)
  58   {
  59     super (that);
  60     _maxSize = that._maxSize;
  61   } // ctor
  62 
  63   protected SequenceEntry (SymtabEntry that, IDLID clone)
  64   {
  65     super (that, clone);
  66     if (!(that instanceof SequenceEntry))
  67       // If that is a SequenceEntry, then it is a container of this sequence, but it is not a module of this sequence.  It's name doesn't belong in the module name.
  68       if (module ().equals (""))
  69         module (name ());
  70       else if (!name ().equals (""))
  71         module (module () + "/" + name ());
  72     repositoryID (Util.emptyID);
  73   } // ctor
  74 
  75   public Object clone ()
  76   {
  77     return new SequenceEntry (this);
  78   } // clone
  79 
  80   public boolean isReferencable()
  81   {
  82     // A sequence is referencable if its component
  83     // type is.
  84     return type().isReferencable() ;
  85   }
  86 
  87   public void isReferencable( boolean value )
  88   {
  89     // NO-OP: this cannot be set for a sequence.
  90   }
  91 
  92   /** Invoke the sequence generator.
  93       @param symbolTable the symbol table is a hash table whose key is
  94        a fully qualified type name and whose value is a SymtabEntry or
  95        a subclass of SymtabEntry.
  96       @param stream the stream to which the generator should sent its output.
  97       @see SymtabEntry */
  98   public void generate (Hashtable symbolTable, PrintWriter stream)
  99   {
 100     sequenceGen.generate (symbolTable, this, stream);
 101   } // generate
 102 
 103   /** Access the sequence generator.
 104       @returns an object which implements the SequenceGen interface.
 105       @see SequenceGen */
 106   public Generator generator ()
 107   {
 108     return sequenceGen;
 109   } // generator
 110 
 111   /** the constant expression defining the maximum size of the sequence.
 112       If it is null, then the sequence is unbounded. */
 113   public void maxSize (Expression expr)
 114   {
 115     _maxSize = expr;
 116   } // maxSize
 117 
 118   /** the constant expression defining the maximum size of the sequence.
 119       If it is null, then the sequence is unbounded. */
 120   public Expression maxSize ()
 121   {
 122     return _maxSize;
 123   } // maxSize
 124 
 125   /** Only sequences can be contained within sequences. */
 126   public void addContained (SymtabEntry entry)
 127   {
 128     _contained.addElement (entry);
 129   } // addContained
 130 
 131   /** Only sequences can be contained within sequences. */
 132   public Vector contained ()
 133   {
 134     return _contained;
 135   } // contained
 136 
 137   static SequenceGen sequenceGen;
 138 
 139   private Expression _maxSize   = null;
 140   private Vector     _contained = new Vector ();
 141 } // class SequenceEntry