SequenceEntry.java revision 672:2bb058ce572e 
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
36package com.sun.tools.corba.se.idl;
37
38// NOTES:
39
40import java.io.PrintWriter;
41import java.util.Hashtable;
42import java.util.Vector;
43
44import com.sun.tools.corba.se.idl.constExpr.Expression;
45
46/**
47 * This is the symbol table entry for sequences.
48 **/
49public 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      @return 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
142