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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