1 /*
2 * Copyright (c) 1999, 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.Enumeration;
42 import java.util.Hashtable;
43 import java.util.Vector;
44
45 import com.sun.tools.corba.se.idl.constExpr.Expression;
46
47 /**
48 * This is the symbol table entry for unions.
49 **/
50 public class UnionEntry extends SymtabEntry
51 {
52 protected UnionEntry ()
53 {
54 super ();
55 } // ctor
56
57 protected UnionEntry (UnionEntry that)
58 {
59 super (that);
60 if (!name ().equals (""))
61 {
62 module (module () + name ());
63 name ("");
64 }
65 _branches = (Vector)that._branches.clone ();
66 _defaultBranch = that._defaultBranch;
67 _contained = that._contained;
68 } // ctor
69
70 protected UnionEntry (SymtabEntry that, IDLID clone)
71 {
72 super (that, clone);
73 if (module ().equals (""))
74 module (name ());
75 else if (!name ().equals (""))
76 module (module () + "/" + name ());
77 } // ctor
78
79 public Object clone ()
80 {
81 return new UnionEntry (this);
82 } // clone
83
84 /** Invoke the union generator.
85 @param symbolTable the symbol table is a hash table whose key is
86 a fully qualified type name and whose value is a SymtabEntry or
87 a subclass of SymtabEntry.
88 @param stream the stream to which the generator should sent its output.
89 @see SymtabEntry */
90 public void generate (Hashtable symbolTable, PrintWriter stream)
91 {
92 unionGen.generate (symbolTable, this, stream);
93 } // generate
94
95 /** Access the union generator.
96 @returns an object which implements the UnionGen interface.
97 @see UnionGen */
98 public Generator generator ()
99 {
100 return unionGen;
101 } // generator
102
103 public void addBranch (UnionBranch branch)
104 {
105 _branches.addElement (branch);
106 } // addBranch
107
108 /** This is a vector of UnionBranch's. */
109 public Vector branches ()
110 {
111 return _branches;
112 } // branches
113
114 /** This TypedefEntry describes the type and name for the default branch.
115 Like the entries in the branches vector, only the type and name fields
116 are pertinent. */
117 public void defaultBranch (TypedefEntry branch)
118 {
119 _defaultBranch = branch;
120 } // defaultBranch
121
122 /** This TypedefEntry describes the type and name for the default branch.
123 Like the entries in the branches vector, only the type and name fields
124 are pertinent. */
125 public TypedefEntry defaultBranch ()
126 {
127 return _defaultBranch;
128 } // defaultBranch
129
130 public void addContained (SymtabEntry entry)
131 {
132 _contained.addElement (entry);
133 } // addContained
134
135 /** This is a vector of SymtabEntry's. It itemizes any types which
136 this union contains. For example:
137
138 <pre>
139 union A
140 switch (long)
141 {
142 case 0: long x;
143 case 1:
144 Struct B
145 {
146 long a;
147 long b;
148 } y;
149 }
150 </pre>
151 Struct B is contained within union A. */
152 public Vector contained ()
153 {
154 return _contained;
155 } // contained
156
157 boolean has (Expression label)
158 {
159 Enumeration eBranches = _branches.elements ();
160 while (eBranches.hasMoreElements ())
161 {
162 Enumeration eLabels = ((UnionBranch)eBranches.nextElement ()).labels.elements ();
163 while (eLabels.hasMoreElements ())
164 {
165 Expression exp = (Expression)eLabels.nextElement ();
166 if (exp.equals (label) || exp.value ().equals (label.value ()))
167 return true;
168 }
169 }
170 return false;
171 } // has
172
173 boolean has (TypedefEntry typedef)
174 {
175 Enumeration e = _branches.elements ();
176 while (e.hasMoreElements ())
177 {
178 UnionBranch branch = (UnionBranch)e.nextElement ();
179 if (!branch.typedef.equals (typedef) && branch.typedef.name ().equals (typedef.name ()))
180 return true;
181 }
182 return false;
183 } // has
184
185 /** A vector of UnionBranch's. */
186 private Vector _branches = new Vector ();
187 private TypedefEntry _defaultBranch = null;
188 private Vector _contained = new Vector ();
189
190 static UnionGen unionGen;
191 } // class UnionEntry