summaryrefslogtreecommitdiff
path: root/TAO/tests/IDL_Test/union.idl
blob: 30064ac3360e2b348af3d5157d1c944f3679bde3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
// $Id$

// ============================================================================
//
// = LIBRARY
//    TAO/tests/IDL_Test
//
// = FILENAME
//    union.idl
//
// = DESCRIPTION
//    This file contains examples of IDL code that has 
//    caused problems in the past for the TAO IDL
//    compiler. This test is to make sure the problems
//    stay fixed.
//
// = AUTHORS
//    Jeff Parsons <parsons@cs.wustl.edu> and TAO users.
//
// ============================================================================


// Implicit default case

enum DataType
{
  dtEmpty,
  dtLong,
  dtShort
};

union Data switch (DataType)
{
  case dtLong: long longData;
  case dtShort: short shortData;
  // by default, empty union
};

// Explicit default case

module Necessary 
{
  // It is important to have a module, in which 
  // the following union is declared.

  typedef long Result;

  enum Kind
    {
      e_Result,
      e_Unused
    };

  union WhichResult switch (Kind )
    {   
      case e_Result: Result  m_Result;
      default: long m_Unused;
    };
};

// Make sure that CORBA_Any::to_* is used everywhere.
module UnionDiscTest
  {
   	union BooleanUnion switch (boolean) 
      {
      	case TRUE: string value;
   		};

    union CharUnion switch (char)
      {
        case 'a': string value;
      };
	};


// Nested unions

enum disc1
{
  one,
  two
};

enum disc2
{
  a,
  b
};

enum disc_outer
{
  out1,
  out2
};

union inner1 switch (disc1)
{ 
  case one: short s;
  case two: long l;
};

union inner2 switch (disc2)
{
  case a: char c;
  case b: long lng;
};

union outer switch (disc_outer)
{
  case out1: inner1 first;
  case out2: inner2 second;
};

module UnionTest3 
{
   enum ValChoice 
     {
    	 intVal,
    	 realVal
   	 };

   union ValType switch(ValChoice) 
     {
       case intVal: long integerValue;
       case realVal: double realValue;
   	 };

   struct UpType 
     {
       ValType high;
       ValType low;
   	 };

   struct DownType 
     {
       ValType high;
       ValType low;
   	 };

   enum IndChoice 
     {
       up_Level,
       down_Level
   	 };

   union IndType switch(IndChoice) 
     {
       case up_Level: UpType up;
       case down_Level: DownType down;
   	 };
};

// Make sure inner union is generated in header file with
// proper scoping (or lack thereof) in its name, depending
// on the platform.
enum XType 
{ 
  X_A 
};

enum ZType 
{ 
  Z_A 
};

union X switch (XType) 
{
  case X_A:
    struct Y 
      {
        union Z switch (ZType) 
        {
          case Z_A: long a;
        } u;
      } a;
};

// Example involving union members with multiple case labels.
enum FieldType
{
    FTYPE_CHAR,
    FTYPE_VARCHAR,
    FTYPE_DEFCHAR
};

union FieldValue switch (FieldType)
{
    case FTYPE_CHAR:
    case FTYPE_VARCHAR:
       string strValue;
    default:
       string defstr;
};


struct Field
{
    FieldValue value;
};

// Tricky case of lookup for a recursive union. When defined
// inside another datatype like this, the union is referenced
// inside itself before the closing brace is seen, but not
// declared yet.
struct Element
{
  union ValueUnion switch (short)
  {
    case 0:
      long lvalue;
    case 1:
      sequence<ValueUnion> VUValue;
  } Value;
};

// A fix to the IDL compiler's typecoce generation created
// a problem with unions that have more than one member,
// where any member except the last is itself a scoped type.
// This is the simplest example that will reproduce the problem,
// if it ever reappears.
enum TestOneEnum 
{ 
  TALL, 
  SCHORT
};

enum TestTwoEnum 
{ 
  LIGHT, 
  DARK
};

union TestUnion switch (short) 
{
  case 1: TestOneEnum oneEnum;
  case 2: TestTwoEnum twoEnum;
};

// Test for various kinds of declarations inside a union,
// similar to the example in enum_in_struct.idl.

union decl_heavy_union switch (short)
{
  case 1:
    enum which
    {
      ZERO,
      ONE,
      TWO
    } m_which;
  case 2: 
    enum en 
    {
      a, 
      b, 
      c
    } m_en_arr[10];
  case 3: 
    struct st 
    {
      long a; 
      char b;
    } m_st_arr[10];
  case 4: 
    union un switch (long) 
    {
      case 1: long a; 
      case 2: char b;
    } m_un_arr[10];
};