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
|
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO IDL
//
// = FILENAME
// operation_is.cpp
//
// = DESCRIPTION
// Visitor generating code for Operation in the implementation skeleton
//
// = AUTHOR
// Yamuna Krishnamurthy (yamuna@cs.wustl.edu)
//
// ============================================================================
#include "idl.h"
#include "idl_extern.h"
#include "be.h"
#include "ace/SString.h"
#include "be_visitor_operation.h"
ACE_RCSID(be_visitor_operation, operation_is, "$Id$")
// ************************************************************
// Operation visitor for implementation skeleton
// ************************************************************
be_visitor_operation_is::be_visitor_operation_is (be_visitor_context *ctx)
: be_visitor_operation (ctx)
{
}
be_visitor_operation_is::~be_visitor_operation_is (void)
{
}
int
be_visitor_operation_is::visit_operation (be_operation *node)
{
TAO_OutStream *os; // output stream
be_type *bt; // type node representing the return type
//cout<<"Within visit_operation "<<endl;
os = this->ctx_->stream ();
this->ctx_->node (node); // save the node
os->indent (); // start with the current indentation level
// STEP I: generate the return type
bt = be_type::narrow_from_decl (node->return_type ());
if (!bt)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_operation_is::"
"visit_operation - "
"Bad return type\n"),
-1);
}
// grab the right visitor to generate the return type
be_visitor_context ctx (*this->ctx_);
ctx.state (TAO_CodeGen::TAO_OPERATION_RETTYPE_OTHERS);
be_visitor *visitor = tao_cg->make_visitor (&ctx);
if (!visitor)
{
ACE_ERROR_RETURN ((LM_ERROR,
"be_visitor_operation_is::"
"visit_operation - "
"Bad visitor to return type\n"),
-1);
}
if (bt->accept (visitor) == -1)
{
delete visitor;
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_operation_is::"
"visit_operation - "
"codegen for return type failed\n"),
-1);
}
delete visitor;
ACE_CString str(node->flatname ());
int lnmlength = ACE_OS::strlen (node->local_name ()->get_string ());
int fnmlength = ACE_OS::strlen (node->flatname ());
fnmlength--;
char * classname = str.substr (0,(fnmlength-lnmlength) ).rep ();
// STEP 2: generate the operation name
*os << " " << idl_global->impl_class_prefix () << classname << idl_global->impl_class_suffix () << "::" << node->local_name ();
// STEP 3: generate the argument list with the appropriate mapping. For these
// we grab a visitor that generates the parameter listing
ctx = *this->ctx_;
ctx.state (TAO_CodeGen::TAO_OPERATION_ARGLIST_IS);
visitor = tao_cg->make_visitor (&ctx);
if (!visitor)
{
ACE_ERROR_RETURN ((LM_ERROR,
"be_visitor_operation_is::"
"visit_operation - "
"Bad visitor to return type\n"),
-1);
}
if (node->accept (visitor) == -1)
{
delete visitor;
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_operation_is::"
"visit_operation - "
"codegen for argument list failed\n"),
-1);
}
delete visitor;
//generate the excetions thrown by the operation
this->gen_raise_exception (node);
*os <<be_idt_nl << "{"<<be_idt_nl;
*os << "//Add your implementation here"<<be_uidt_nl;
//Code to generate teh return statement in the operations.....
//Can be uncommented when required
/*
ctx = *this->ctx_;
ctx.state (TAO_CodeGen::TAO_OPERATION_RETTYPE_IS);
visitor = tao_cg->make_visitor (&ctx);
if (!visitor)
{
ACE_ERROR_RETURN ((LM_ERROR,
"be_visitor_operation_is::"
"visit_operation - "
"Bad visitor to return type\n"),
-1);
}
if (bt->accept (visitor) == -1)
{
delete visitor;
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_operation_is::"
"visit_operation - "
"codegen for return type failed\n"),
-1);
}
delete visitor;
*/
*os << "}" << be_nl << be_uidt_nl;
return 0;
}
//method to generate the exceptions throw by the operation
int
be_visitor_operation_is::gen_raise_exception (be_operation *node)
{
TAO_OutStream *os = this->ctx_->stream (); // grab the out stream
if (node->exceptions ())
{
os->indent ();
// initialize an iterator to iterate thru the exception list
UTL_ExceptlistActiveIterator *ei;
ACE_NEW_RETURN (ei,
UTL_ExceptlistActiveIterator (node->exceptions ()),
-1);
*os << be_idt_nl << "TAO_THROW_SPEC ((";
// continue until each element is visited
while (!ei->is_done ())
{
be_exception *excp = be_exception::narrow_from_decl (ei->item ());
if (excp == 0)
{
delete ei;
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_operation_exceptlist_cs"
"visit_operation - "
"codegen for scope failed\n"), -1);
}
// allocator method
*os << excp->name ();
ei->next ();
if (!ei->is_done ())
{
*os << "," <<be_nl<<"\t\t";
//os->indent ();
}
// except the last one is processed?
} // end of while loop
delete ei;
*os << "))"<<be_uidt;
} // end of if
return 0;
}
|
