| 2 |
7u83 |
1 |
/*
|
|
|
2 |
Crown Copyright (c) 1997
|
|
|
3 |
|
|
|
4 |
This TenDRA(r) Computer Program is subject to Copyright
|
|
|
5 |
owned by the United Kingdom Secretary of State for Defence
|
|
|
6 |
acting through the Defence Evaluation and Research Agency
|
|
|
7 |
(DERA). It is made available to Recipients with a
|
|
|
8 |
royalty-free licence for its use, reproduction, transfer
|
|
|
9 |
to other parties and amendment for any purpose not excluding
|
|
|
10 |
product development provided that any such use et cetera
|
|
|
11 |
shall be deemed to be acceptance of the following conditions:-
|
|
|
12 |
|
|
|
13 |
(1) Its Recipients shall ensure that this Notice is
|
|
|
14 |
reproduced upon any copies or amended versions of it;
|
|
|
15 |
|
|
|
16 |
(2) Any amended version of it shall be clearly marked to
|
|
|
17 |
show both the nature of and the organisation responsible
|
|
|
18 |
for the relevant amendment or amendments;
|
|
|
19 |
|
|
|
20 |
(3) Its onward transfer from a recipient to another
|
|
|
21 |
party shall be deemed to be that party's acceptance of
|
|
|
22 |
these conditions;
|
|
|
23 |
|
|
|
24 |
(4) DERA gives no warranty or assurance as to its
|
|
|
25 |
quality or suitability for any purpose and DERA accepts
|
|
|
26 |
no liability whatsoever in relation to any use to which
|
|
|
27 |
it may be put.
|
|
|
28 |
*/
|
|
|
29 |
|
|
|
30 |
|
|
|
31 |
#include "config.h"
|
|
|
32 |
#include "c_types.h"
|
|
|
33 |
#include "ctype_ops.h"
|
|
|
34 |
#include "err_ops.h"
|
|
|
35 |
#include "exp_ops.h"
|
|
|
36 |
#include "graph_ops.h"
|
|
|
37 |
#include "hashid_ops.h"
|
|
|
38 |
#include "id_ops.h"
|
|
|
39 |
#include "member_ops.h"
|
|
|
40 |
#include "off_ops.h"
|
|
|
41 |
#include "nspace_ops.h"
|
|
|
42 |
#include "str_ops.h"
|
|
|
43 |
#include "tok_ops.h"
|
|
|
44 |
#include "type_ops.h"
|
|
|
45 |
#include "error.h"
|
|
|
46 |
#include "catalog.h"
|
|
|
47 |
#include "access.h"
|
|
|
48 |
#include "basetype.h"
|
|
|
49 |
#include "char.h"
|
|
|
50 |
#include "check.h"
|
|
|
51 |
#include "chktype.h"
|
|
|
52 |
#include "class.h"
|
|
|
53 |
#include "compile.h"
|
|
|
54 |
#include "constant.h"
|
|
|
55 |
#include "copy.h"
|
|
|
56 |
#include "declare.h"
|
|
|
57 |
#include "derive.h"
|
|
|
58 |
#include "dump.h"
|
|
|
59 |
#include "file.h"
|
|
|
60 |
#include "function.h"
|
|
|
61 |
#include "identifier.h"
|
|
|
62 |
#include "instance.h"
|
|
|
63 |
#include "literal.h"
|
|
|
64 |
#include "namespace.h"
|
|
|
65 |
#include "option.h"
|
|
|
66 |
#include "overload.h"
|
|
|
67 |
#include "predict.h"
|
|
|
68 |
#include "redeclare.h"
|
|
|
69 |
#include "syntax.h"
|
|
|
70 |
#include "template.h"
|
|
|
71 |
#include "tokdef.h"
|
|
|
72 |
#include "token.h"
|
|
|
73 |
#include "ustring.h"
|
|
|
74 |
|
|
|
75 |
|
|
|
76 |
/*
|
|
|
77 |
CURRENT LINKAGE SPECIFIER
|
|
|
78 |
|
|
|
79 |
The current linkage specifier is handled by means of this global
|
|
|
80 |
variable. The default, of no linkage being given, is interpreted
|
|
|
81 |
according to the source language.
|
|
|
82 |
*/
|
|
|
83 |
|
|
|
84 |
DECL_SPEC crt_linkage = dspec_none ;
|
|
|
85 |
DECL_SPEC new_linkage = dspec_none ;
|
|
|
86 |
|
|
|
87 |
|
|
|
88 |
/*
|
|
|
89 |
FIND A LINKAGE SPECIFIER
|
|
|
90 |
|
|
|
91 |
This routine translates the string literal expression e into a linkage
|
|
|
92 |
specifier. The only recognised strings are "C" and "C++".
|
|
|
93 |
*/
|
|
|
94 |
|
|
|
95 |
DECL_SPEC find_linkage
|
|
|
96 |
PROTO_N ( ( e ) )
|
|
|
97 |
PROTO_T ( EXP e )
|
|
|
98 |
{
|
|
|
99 |
STRING s = DEREF_str ( exp_string_lit_str ( e ) ) ;
|
|
|
100 |
unsigned kind = DEREF_unsigned ( str_simple_kind ( s ) ) ;
|
|
|
101 |
|
|
|
102 |
/* Can only occur in namespace scope */
|
|
|
103 |
if ( in_function_defn || in_class_defn ) {
|
|
|
104 |
report ( crt_loc, ERR_dcl_link_scope () ) ;
|
|
|
105 |
}
|
|
|
106 |
|
|
|
107 |
/* Check the linkage string */
|
|
|
108 |
if ( kind == STRING_NONE ) {
|
|
|
109 |
char *t = strlit ( DEREF_string ( str_simple_text ( s ) ) ) ;
|
|
|
110 |
unsigned long len = DEREF_ulong ( str_simple_len ( s ) ) ;
|
|
|
111 |
if ( len == 1 && streq ( t, "C" ) ) {
|
|
|
112 |
return ( dspec_c ) ;
|
|
|
113 |
}
|
|
|
114 |
if ( len == 3 && streq ( t, "C++" ) ) {
|
|
|
115 |
return ( dspec_cpp ) ;
|
|
|
116 |
}
|
|
|
117 |
}
|
|
|
118 |
|
|
|
119 |
/* Report unknown strings */
|
|
|
120 |
report ( crt_loc, ERR_dcl_link_unknown ( s ) ) ;
|
|
|
121 |
return ( crt_linkage ) ;
|
|
|
122 |
}
|
|
|
123 |
|
|
|
124 |
|
|
|
125 |
/*
|
|
|
126 |
FIND A LINKAGE STRING
|
|
|
127 |
|
|
|
128 |
This routine returns the string corresponding to the linkage specifiers
|
|
|
129 |
given by ds and cv.
|
|
|
130 |
*/
|
|
|
131 |
|
|
|
132 |
string linkage_string
|
|
|
133 |
PROTO_N ( ( ds, cv ) )
|
|
|
134 |
PROTO_T ( DECL_SPEC ds X CV_SPEC cv )
|
|
|
135 |
{
|
|
|
136 |
CONST char *str ;
|
|
|
137 |
if ( ( ds & dspec_c ) || ( cv & cv_c ) ) {
|
|
|
138 |
str = "C" ;
|
|
|
139 |
} else {
|
|
|
140 |
str = "C++" ;
|
|
|
141 |
}
|
|
|
142 |
return ( ustrlit ( str ) ) ;
|
|
|
143 |
}
|
|
|
144 |
|
|
|
145 |
|
|
|
146 |
/*
|
|
|
147 |
ADJUST DECLARATION SPECIFIER FOR LANGUAGE
|
|
|
148 |
|
|
|
149 |
This routine adds the current language specifier to the declaration
|
|
|
150 |
specifier ds. mem is true for a member declaration (which always
|
|
|
151 |
has C++ linkage). ds may contain a language specifier from a
|
|
|
152 |
previous declaration, otherwise it is deduced from crt_linkage.
|
|
|
153 |
*/
|
|
|
154 |
|
|
|
155 |
DECL_SPEC adjust_linkage
|
|
|
156 |
PROTO_N ( ( ds, mem ) )
|
|
|
157 |
PROTO_T ( DECL_SPEC ds X int mem )
|
|
|
158 |
{
|
|
|
159 |
DECL_SPEC rs = ( ds & ~dspec_language ) ;
|
|
|
160 |
if ( mem ) {
|
|
|
161 |
/* Members have C++ linkage */
|
|
|
162 |
rs |= dspec_cpp ;
|
|
|
163 |
} else if ( rs & dspec_linkage ) {
|
|
|
164 |
/* Only applies to objects with linkage */
|
|
|
165 |
DECL_SPEC ln = ( ds | crt_linkage ) ;
|
|
|
166 |
if ( ln & dspec_c ) {
|
|
|
167 |
rs |= dspec_c ;
|
|
|
168 |
} else {
|
|
|
169 |
rs |= dspec_cpp ;
|
|
|
170 |
}
|
|
|
171 |
}
|
|
|
172 |
return ( rs ) ;
|
|
|
173 |
}
|
|
|
174 |
|
|
|
175 |
|
|
|
176 |
/*
|
|
|
177 |
CHECK C LINKAGE DECLARATIONS
|
|
|
178 |
|
|
|
179 |
This routine checks the identifier id declared with C linkage. Objects
|
|
|
180 |
with C linkage in different namespaces are actually the same.
|
|
|
181 |
*/
|
|
|
182 |
|
|
|
183 |
void c_linkage
|
|
|
184 |
PROTO_N ( ( id, def ) )
|
|
|
185 |
PROTO_T ( IDENTIFIER id X int def )
|
|
|
186 |
{
|
|
|
187 |
TYPE t = NULL_type ;
|
|
|
188 |
unsigned tag = TAG_id ( id ) ;
|
|
|
189 |
if ( tag == id_function_tag ) {
|
|
|
190 |
/* Template functions can't have C linkage */
|
|
|
191 |
t = DEREF_type ( id_function_type ( id ) ) ;
|
|
|
192 |
if ( IS_type_templ ( t ) ) {
|
|
|
193 |
report ( decl_loc, ERR_temp_decl_linkage () ) ;
|
|
|
194 |
}
|
|
|
195 |
} else if ( tag == id_variable_tag ) {
|
|
|
196 |
t = DEREF_type ( id_variable_type ( id ) ) ;
|
|
|
197 |
}
|
|
|
198 |
if ( !IS_NULL_type ( t ) ) {
|
|
|
199 |
NAMESPACE ns = c_namespace ;
|
|
|
200 |
if ( !IS_NULL_nspace ( ns ) ) {
|
|
|
201 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
202 |
MEMBER mem = search_member ( ns, nm, 1 ) ;
|
|
|
203 |
IDENTIFIER pid = DEREF_id ( member_id ( mem ) ) ;
|
|
|
204 |
if ( !IS_NULL_id ( pid ) && !EQ_id ( id, pid ) ) {
|
|
|
205 |
NAMESPACE cns = DEREF_nspace ( id_parent ( id ) ) ;
|
|
|
206 |
NAMESPACE pns = DEREF_nspace ( id_parent ( pid ) ) ;
|
|
|
207 |
if ( !EQ_nspace ( cns, pns ) ) {
|
|
|
208 |
DECL_SPEC cl = crt_linkage ;
|
|
|
209 |
QUALIFIER cq = crt_id_qualifier ;
|
|
|
210 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
211 |
crt_linkage = ( ds & dspec_language ) ;
|
|
|
212 |
crt_id_qualifier = qual_none ;
|
|
|
213 |
pid = redecl_id ( ds, t, pid, 3, -1 ) ;
|
|
|
214 |
if ( !IS_NULL_id ( pid ) ) {
|
|
|
215 |
/* Set up alias */
|
|
|
216 |
if ( IS_id_function ( pid ) ) {
|
|
|
217 |
TYPE s = DEREF_type ( id_function_type ( pid ) ) ;
|
|
|
218 |
s = redecl_func_type ( pid, s, t, def, 0 ) ;
|
|
|
219 |
COPY_type ( id_function_type ( pid ), s ) ;
|
|
|
220 |
}
|
|
|
221 |
ds |= dspec_alias ;
|
|
|
222 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
223 |
pid = DEREF_id ( id_alias ( pid ) ) ;
|
|
|
224 |
COPY_id ( id_alias ( id ), pid ) ;
|
|
|
225 |
if ( do_dump ) dump_alias ( id, pid, &decl_loc ) ;
|
|
|
226 |
id = pid ;
|
|
|
227 |
}
|
|
|
228 |
crt_id_qualifier = cq ;
|
|
|
229 |
crt_linkage = cl ;
|
|
|
230 |
}
|
|
|
231 |
}
|
|
|
232 |
COPY_id ( member_id ( mem ), id ) ;
|
|
|
233 |
}
|
|
|
234 |
}
|
|
|
235 |
return ;
|
|
|
236 |
}
|
|
|
237 |
|
|
|
238 |
|
|
|
239 |
/*
|
|
|
240 |
FIND A PREVIOUS DECLARATION
|
|
|
241 |
|
|
|
242 |
If a declaration in block scope is declared extern then it has external
|
|
|
243 |
linkage unless the declaration matches a visible declaration of namespace
|
|
|
244 |
scope. This routine finds such a declaration for the identifier id
|
|
|
245 |
of type t.
|
|
|
246 |
*/
|
|
|
247 |
|
|
|
248 |
IDENTIFIER find_previous
|
|
|
249 |
PROTO_N ( ( t, id ) )
|
|
|
250 |
PROTO_T ( TYPE t X IDENTIFIER id )
|
|
|
251 |
{
|
|
|
252 |
if ( crt_id_qualifier == qual_none ) {
|
|
|
253 |
NAMESPACE ns = nonblock_namespace ;
|
|
|
254 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
255 |
IDENTIFIER pid = find_extern_id ( nm, ns, 0 ) ;
|
|
|
256 |
if ( !IS_NULL_id ( pid ) ) {
|
|
|
257 |
TYPE s ;
|
|
|
258 |
DECL_SPEC st ;
|
|
|
259 |
switch ( TAG_id ( pid ) ) {
|
|
|
260 |
case id_variable_tag : {
|
|
|
261 |
/* Variables may be redeclared */
|
|
|
262 |
s = DEREF_type ( id_variable_type ( pid ) ) ;
|
|
|
263 |
break ;
|
|
|
264 |
}
|
|
|
265 |
case id_function_tag : {
|
|
|
266 |
/* Functions may be redeclared */
|
|
|
267 |
#if LANGUAGE_CPP
|
|
|
268 |
int eq = 0 ;
|
|
|
269 |
LIST ( IDENTIFIER ) pids = NULL_list ( IDENTIFIER ) ;
|
|
|
270 |
pid = resolve_func ( pid, t, 0, 0, pids, &eq ) ;
|
|
|
271 |
if ( IS_NULL_id ( pid ) ) return ( NULL_id ) ;
|
|
|
272 |
if ( !IS_id_function ( pid ) ) return ( NULL_id ) ;
|
|
|
273 |
#endif
|
|
|
274 |
s = DEREF_type ( id_function_type ( pid ) ) ;
|
|
|
275 |
break ;
|
|
|
276 |
}
|
|
|
277 |
default : {
|
|
|
278 |
/* Nothing else can be redeclared */
|
|
|
279 |
return ( NULL_id ) ;
|
|
|
280 |
}
|
|
|
281 |
}
|
|
|
282 |
st = DEREF_dspec ( id_storage ( pid ) ) ;
|
|
|
283 |
if ( st & dspec_linkage ) {
|
|
|
284 |
/* Previous declaration must have linkage */
|
|
|
285 |
s = type_composite ( s, t, 0, 0, KILL_err, 0 ) ;
|
|
|
286 |
if ( !IS_NULL_type ( s ) ) return ( pid ) ;
|
|
|
287 |
}
|
|
|
288 |
}
|
|
|
289 |
}
|
|
|
290 |
return ( NULL_id ) ;
|
|
|
291 |
}
|
|
|
292 |
|
|
|
293 |
|
|
|
294 |
/*
|
|
|
295 |
UNIFY AN EXTERNAL IDENTIFIER
|
|
|
296 |
|
|
|
297 |
This routine checks the identifier id, which is a variable declared
|
|
|
298 |
extern in a block, against conflicts with the namespace ns into
|
|
|
299 |
which it is injected. p gives all the other extern block identifiers
|
|
|
300 |
declared before id. The routine returns any previous identifier.
|
|
|
301 |
*/
|
|
|
302 |
|
|
|
303 |
IDENTIFIER unify_extern
|
|
|
304 |
PROTO_N ( ( id, t, ns, p ) )
|
|
|
305 |
PROTO_T ( IDENTIFIER id X TYPE t X NAMESPACE ns X LIST ( IDENTIFIER ) p )
|
|
|
306 |
{
|
|
|
307 |
IDENTIFIER pid = NULL_id ;
|
|
|
308 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
309 |
LIST ( IDENTIFIER ) pids = NULL_list ( IDENTIFIER ) ;
|
|
|
310 |
while ( !IS_NULL_list ( p ) ) {
|
|
|
311 |
/* Check other block externs */
|
|
|
312 |
IDENTIFIER bid = DEREF_id ( HEAD_list ( p ) ) ;
|
|
|
313 |
HASHID bnm = DEREF_hashid ( id_name ( bid ) ) ;
|
|
|
314 |
if ( EQ_hashid ( bnm, nm ) ) {
|
|
|
315 |
bid = DEREF_id ( id_alias ( bid ) ) ;
|
|
|
316 |
CONS_id ( bid, pids, pids ) ;
|
|
|
317 |
}
|
|
|
318 |
p = TAIL_list ( p ) ;
|
|
|
319 |
}
|
|
|
320 |
if ( !IS_NULL_nspace ( ns ) ) {
|
|
|
321 |
/* Check actual namespace */
|
|
|
322 |
MEMBER mem = search_member ( ns, nm, 0 ) ;
|
|
|
323 |
if ( !IS_NULL_member ( mem ) ) {
|
|
|
324 |
IDENTIFIER bid = DEREF_id ( member_id ( mem ) ) ;
|
|
|
325 |
if ( !IS_NULL_id ( bid ) ) {
|
|
|
326 |
bid = DEREF_id ( id_alias ( bid ) ) ;
|
|
|
327 |
CONS_id ( bid, pids, pids ) ;
|
|
|
328 |
}
|
|
|
329 |
}
|
|
|
330 |
}
|
|
|
331 |
if ( !IS_NULL_list ( pids ) ) {
|
|
|
332 |
/* Match found */
|
|
|
333 |
if ( IS_NULL_type ( t ) ) {
|
|
|
334 |
if ( IS_NULL_list ( TAIL_list ( pids ) ) ) {
|
|
|
335 |
pid = DEREF_id ( HEAD_list ( pids ) ) ;
|
|
|
336 |
DESTROY_list ( pids, SIZE_id ) ;
|
|
|
337 |
} else {
|
|
|
338 |
DECL_SPEC ds ;
|
|
|
339 |
pids = REVERSE_list ( pids ) ;
|
|
|
340 |
ds = find_ambig_dspec ( pids ) ;
|
|
|
341 |
MAKE_id_ambig ( nm, ds, ns, crt_loc, pids, 1, pid ) ;
|
|
|
342 |
}
|
|
|
343 |
} else {
|
|
|
344 |
LIST ( IDENTIFIER ) qids ;
|
|
|
345 |
DECL_SPEC cl = crt_linkage ;
|
|
|
346 |
QUALIFIER cq = crt_id_qualifier ;
|
|
|
347 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
348 |
crt_linkage = ( ds & dspec_language ) ;
|
|
|
349 |
crt_id_qualifier = qual_none ;
|
|
|
350 |
DEREF_loc ( id_loc ( id ), decl_loc ) ;
|
|
|
351 |
pids = REVERSE_list ( pids ) ;
|
|
|
352 |
qids = pids ;
|
|
|
353 |
while ( !IS_NULL_list ( qids ) ) {
|
|
|
354 |
IDENTIFIER qid = DEREF_id ( HEAD_list ( qids ) ) ;
|
|
|
355 |
qid = DEREF_id ( id_alias ( qid ) ) ;
|
|
|
356 |
if ( IS_type_func ( t ) ) {
|
|
|
357 |
/* Check function redeclaration */
|
|
|
358 |
IDENTIFIER over = NULL_id ;
|
|
|
359 |
unsigned tag = TAG_id ( id ) ;
|
|
|
360 |
qid = redecl_func ( ds, t, qid, tag, &over, -1 ) ;
|
|
|
361 |
} else {
|
|
|
362 |
/* Check variable redeclaration */
|
|
|
363 |
qid = redecl_id ( ds, t, qid, 0, -1 ) ;
|
|
|
364 |
}
|
|
|
365 |
if ( !IS_NULL_id ( qid ) ) pid = qid ;
|
|
|
366 |
qids = TAIL_list ( qids ) ;
|
|
|
367 |
}
|
|
|
368 |
DESTROY_list ( pids, SIZE_id ) ;
|
|
|
369 |
crt_id_qualifier = cq ;
|
|
|
370 |
crt_linkage = cl ;
|
|
|
371 |
}
|
|
|
372 |
}
|
|
|
373 |
return ( pid ) ;
|
|
|
374 |
}
|
|
|
375 |
|
|
|
376 |
|
|
|
377 |
/*
|
|
|
378 |
UNIFY A BLOCK DECLARATION WITH A PREVIOUS DECLARATION
|
|
|
379 |
|
|
|
380 |
This routine is used to unify the external block declaration id of
|
|
|
381 |
type t with its previous declaration pid (as returned by find_previous).
|
|
|
382 |
def is true is id is a function definition. The routine returns id.
|
|
|
383 |
If there is no previous declaration then one is created and added to
|
|
|
384 |
the extra identifier list of the enclosing non-block namespace.
|
|
|
385 |
*/
|
|
|
386 |
|
|
|
387 |
IDENTIFIER unify_previous
|
|
|
388 |
PROTO_N ( ( id, t, pid, def ) )
|
|
|
389 |
PROTO_T ( IDENTIFIER id X TYPE t X IDENTIFIER pid X int def )
|
|
|
390 |
{
|
|
|
391 |
/* Unify external linkage */
|
|
|
392 |
if ( IS_NULL_id ( pid ) ) {
|
|
|
393 |
LIST ( IDENTIFIER ) p ;
|
|
|
394 |
NAMESPACE ns = nonblock_namespace ;
|
|
|
395 |
p = DEREF_list ( nspace_named_etc_extra ( ns ) ) ;
|
|
|
396 |
pid = unify_extern ( id, t, ns, p ) ;
|
|
|
397 |
if ( IS_NULL_id ( pid ) ) {
|
|
|
398 |
if ( !is_templ_depend ( t ) ) {
|
|
|
399 |
/* Declare new external object */
|
|
|
400 |
DECL_SPEC ds ;
|
|
|
401 |
pid = copy_id ( id, 0 ) ;
|
|
|
402 |
ds = DEREF_dspec ( id_storage ( pid ) ) ;
|
|
|
403 |
if ( !( ds & dspec_linkage ) ) ds |= dspec_extern ;
|
|
|
404 |
ds &= ~dspec_alias ;
|
|
|
405 |
COPY_dspec ( id_storage ( pid ), ds ) ;
|
|
|
406 |
COPY_nspace ( id_parent ( pid ), ns ) ;
|
|
|
407 |
COPY_id ( id_alias ( pid ), pid ) ;
|
|
|
408 |
CONS_id ( pid, p, p ) ;
|
|
|
409 |
COPY_list ( nspace_named_etc_extra ( ns ), p ) ;
|
|
|
410 |
}
|
|
|
411 |
|
|
|
412 |
/* Check object type */
|
|
|
413 |
if ( !is_global_type ( t ) ) {
|
|
|
414 |
report ( crt_loc, ERR_basic_link_none ( t, id ) ) ;
|
|
|
415 |
}
|
|
|
416 |
}
|
|
|
417 |
}
|
|
|
418 |
|
|
|
419 |
/* Alias id to be pid */
|
|
|
420 |
if ( !IS_NULL_id ( pid ) ) {
|
|
|
421 |
if ( IS_id_function_etc ( pid ) ) {
|
|
|
422 |
TYPE s = DEREF_type ( id_function_etc_type ( pid ) ) ;
|
|
|
423 |
s = redecl_func_type ( pid, s, t, def, 0 ) ;
|
|
|
424 |
COPY_type ( id_function_etc_type ( pid ), s ) ;
|
|
|
425 |
}
|
|
|
426 |
pid = DEREF_id ( id_alias ( pid ) ) ;
|
|
|
427 |
COPY_id ( id_alias ( id ), pid ) ;
|
|
|
428 |
}
|
|
|
429 |
return ( id ) ;
|
|
|
430 |
}
|
|
|
431 |
|
|
|
432 |
|
|
|
433 |
/*
|
|
|
434 |
UNIFY A DECLARATION WITH A PREVIOUS BLOCK DECLARATION
|
|
|
435 |
|
|
|
436 |
This routine is used to unify the external declaration id of type
|
|
|
437 |
t with any previous external block declaration of the same object.
|
|
|
438 |
def is true if id is a function definition. The routine returns id.
|
|
|
439 |
*/
|
|
|
440 |
|
|
|
441 |
IDENTIFIER unify_subsequent
|
|
|
442 |
PROTO_N ( ( id, t, def ) )
|
|
|
443 |
PROTO_T ( IDENTIFIER id X TYPE t X int def )
|
|
|
444 |
{
|
|
|
445 |
NAMESPACE ns = DEREF_nspace ( id_parent ( id ) ) ;
|
|
|
446 |
if ( IS_nspace_named_etc ( ns ) ) {
|
|
|
447 |
LIST ( IDENTIFIER ) p ;
|
|
|
448 |
p = DEREF_list ( nspace_named_etc_extra ( ns ) ) ;
|
|
|
449 |
if ( !IS_NULL_list ( p ) ) {
|
|
|
450 |
IDENTIFIER pid = unify_extern ( id, t, NULL_nspace, p ) ;
|
|
|
451 |
if ( !IS_NULL_id ( pid ) ) {
|
|
|
452 |
/* Alias id to be pid */
|
|
|
453 |
if ( IS_id_function_etc ( pid ) ) {
|
|
|
454 |
TYPE s = DEREF_type ( id_function_etc_type ( pid ) ) ;
|
|
|
455 |
s = redecl_func_type ( pid, s, t, def, 0 ) ;
|
|
|
456 |
COPY_type ( id_function_etc_type ( pid ), s ) ;
|
|
|
457 |
}
|
|
|
458 |
pid = DEREF_id ( id_alias ( pid ) ) ;
|
|
|
459 |
COPY_id ( id_alias ( id ), pid ) ;
|
|
|
460 |
}
|
|
|
461 |
}
|
|
|
462 |
}
|
|
|
463 |
return ( id ) ;
|
|
|
464 |
}
|
|
|
465 |
|
|
|
466 |
|
|
|
467 |
/*
|
|
|
468 |
CHECK FOR CLASS-LIKE TYPEDEF NAMES
|
|
|
469 |
|
|
|
470 |
This routine checks whether the typedef name id behaves like a class
|
|
|
471 |
or an object with respect to name hiding. It is not entirely clear
|
|
|
472 |
whether it is just original class and enumeration names or all class
|
|
|
473 |
and enumeration names (including those introduced using typedef)
|
|
|
474 |
which behave in this way.
|
|
|
475 |
*/
|
|
|
476 |
|
|
|
477 |
int is_tagged_type
|
|
|
478 |
PROTO_N ( ( id ) )
|
|
|
479 |
PROTO_T ( IDENTIFIER id )
|
|
|
480 |
{
|
|
|
481 |
switch ( TAG_id ( id ) ) {
|
|
|
482 |
case id_class_name_tag :
|
|
|
483 |
case id_enum_name_tag : {
|
|
|
484 |
/* Original class and enumeration names */
|
|
|
485 |
return ( 1 ) ;
|
|
|
486 |
}
|
|
|
487 |
case id_class_alias_tag :
|
|
|
488 |
case id_enum_alias_tag :
|
|
|
489 |
case id_type_alias_tag : {
|
|
|
490 |
/* Type aliases */
|
|
|
491 |
return ( 0 ) ;
|
|
|
492 |
}
|
|
|
493 |
}
|
|
|
494 |
return ( 0 ) ;
|
|
|
495 |
}
|
|
|
496 |
|
|
|
497 |
|
|
|
498 |
/*
|
|
|
499 |
REPORT AN OVERLOADIN ERROR
|
|
|
500 |
|
|
|
501 |
This routine reports the overloading error err for the function id
|
|
|
502 |
which cannot be overloaded for the reason corresponding to reason.
|
|
|
503 |
It returns the severity of the error.
|
|
|
504 |
*/
|
|
|
505 |
|
|
|
506 |
static int overload_error
|
|
|
507 |
PROTO_N ( ( id, err, reason ) )
|
|
|
508 |
PROTO_T ( IDENTIFIER id X ERROR err X int reason )
|
|
|
509 |
{
|
|
|
510 |
int sev = ERROR_NONE ;
|
|
|
511 |
switch ( reason ) {
|
|
|
512 |
case 1 : {
|
|
|
513 |
/* Two functions with C linkage */
|
|
|
514 |
err = concat_error ( err, ERR_dcl_link_over () ) ;
|
|
|
515 |
break ;
|
|
|
516 |
}
|
|
|
517 |
case 2 : {
|
|
|
518 |
/* Two functions with indistinguishable parameters */
|
|
|
519 |
err = concat_error ( err, ERR_over_load_pars () ) ;
|
|
|
520 |
break ;
|
|
|
521 |
}
|
|
|
522 |
case 3 : {
|
|
|
523 |
/* Two objects with C linkage */
|
|
|
524 |
PTR ( LOCATION ) loc = id_loc ( id ) ;
|
|
|
525 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
526 |
err = concat_error ( err, ERR_dcl_link_redecl ( nm, loc ) ) ;
|
|
|
527 |
break ;
|
|
|
528 |
}
|
|
|
529 |
}
|
|
|
530 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
531 |
sev = DEREF_int ( err_severity ( err ) ) ;
|
|
|
532 |
report ( decl_loc, err ) ;
|
|
|
533 |
}
|
|
|
534 |
return ( sev ) ;
|
|
|
535 |
}
|
|
|
536 |
|
|
|
537 |
|
|
|
538 |
/*
|
|
|
539 |
REDECLARE AN OBJECT IDENTIFIER
|
|
|
540 |
|
|
|
541 |
This routine checks the redeclaration of the identifier id as an object
|
|
|
542 |
with declaration specifiers ds and type t. It returns id for a valid
|
|
|
543 |
redeclaration and the null identifier otherwise, reporting any errors
|
|
|
544 |
if necessary. Note that it is possible to reserve an identifier using
|
|
|
545 |
the reserve declaration specifier. At present this is only done for
|
|
|
546 |
the fields of an anonymous union and enumerators. Also a class or
|
|
|
547 |
enumeration name can be hidden by an object in the same scope. A
|
|
|
548 |
redeclared identifier will be marked as defined according to whether
|
|
|
549 |
the redeclaration is a definition. Whether the initial declaration
|
|
|
550 |
was a definition may be determined from the initialiser expression.
|
|
|
551 |
*/
|
|
|
552 |
|
|
|
553 |
IDENTIFIER redecl_id
|
|
|
554 |
PROTO_N ( ( ds, t, id, reason, def ) )
|
|
|
555 |
PROTO_T ( DECL_SPEC ds X TYPE t X IDENTIFIER id X int reason X int def )
|
|
|
556 |
{
|
|
|
557 |
TYPE s ;
|
|
|
558 |
DECL_SPEC ln ;
|
|
|
559 |
PTR ( TYPE ) pt ;
|
|
|
560 |
int changed = 0 ;
|
|
|
561 |
int is_member = 0 ;
|
|
|
562 |
int is_function = 0 ;
|
|
|
563 |
ERROR err = NULL_err ;
|
|
|
564 |
DECL_SPEC ds_old, ln_old ;
|
|
|
565 |
|
|
|
566 |
/* Check previous definition */
|
|
|
567 |
switch ( TAG_id ( id ) ) {
|
|
|
568 |
case id_variable_tag : {
|
|
|
569 |
/* Variables may be redeclared */
|
|
|
570 |
pt = id_variable_type ( id ) ;
|
|
|
571 |
break ;
|
|
|
572 |
}
|
|
|
573 |
case id_function_tag : {
|
|
|
574 |
/* Functions may be redeclared */
|
|
|
575 |
is_function = 1 ;
|
|
|
576 |
pt = id_function_type ( id ) ;
|
|
|
577 |
break ;
|
|
|
578 |
}
|
|
|
579 |
case id_class_name_tag :
|
|
|
580 |
case id_enum_name_tag :
|
|
|
581 |
case id_class_alias_tag :
|
|
|
582 |
case id_enum_alias_tag :
|
|
|
583 |
case id_type_alias_tag : {
|
|
|
584 |
/* Unqualified class and enumeration names can be hidden */
|
|
|
585 |
PTR ( LOCATION ) loc ;
|
|
|
586 |
if ( !is_tagged_type ( id ) ) {
|
|
|
587 |
loc = id_loc ( id ) ;
|
|
|
588 |
report ( decl_loc, ERR_basic_odr_diff ( id, loc ) ) ;
|
|
|
589 |
return ( NULL_id ) ;
|
|
|
590 |
}
|
|
|
591 |
if ( crt_id_qualifier == qual_none ) {
|
|
|
592 |
/* Check for templates */
|
|
|
593 |
ds_old = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
594 |
if ( !( ds_old & dspec_template ) ) return ( NULL_id ) ;
|
|
|
595 |
}
|
|
|
596 |
loc = id_loc ( id ) ;
|
|
|
597 |
report ( decl_loc, ERR_basic_odr_diff ( id, loc ) ) ;
|
|
|
598 |
return ( NULL_id ) ;
|
|
|
599 |
}
|
|
|
600 |
case id_stat_member_tag : {
|
|
|
601 |
/* Members may be defined outside their class */
|
|
|
602 |
is_member = 1 ;
|
|
|
603 |
if ( crt_id_qualifier == qual_none ) goto error_lab ;
|
|
|
604 |
pt = id_stat_member_type ( id ) ;
|
|
|
605 |
break ;
|
|
|
606 |
}
|
|
|
607 |
case id_mem_func_tag :
|
|
|
608 |
case id_stat_mem_func_tag : {
|
|
|
609 |
/* Members may be defined outside their class */
|
|
|
610 |
is_member = 1 ;
|
|
|
611 |
is_function = 1 ;
|
|
|
612 |
if ( crt_id_qualifier == qual_none ) goto error_lab ;
|
|
|
613 |
pt = id_function_etc_type ( id ) ;
|
|
|
614 |
break ;
|
|
|
615 |
}
|
|
|
616 |
case id_member_tag : {
|
|
|
617 |
/* Non-static members cannot be redeclared */
|
|
|
618 |
is_member = 1 ;
|
|
|
619 |
if ( crt_id_qualifier == qual_none ) goto error_lab ;
|
|
|
620 |
report ( decl_loc, ERR_class_mem_def ( id ) ) ;
|
|
|
621 |
return ( NULL_id ) ;
|
|
|
622 |
}
|
|
|
623 |
case id_token_tag : {
|
|
|
624 |
/* Allow for token definitions */
|
|
|
625 |
return ( NULL_id ) ;
|
|
|
626 |
}
|
|
|
627 |
case id_undef_tag :
|
|
|
628 |
case id_ambig_tag : {
|
|
|
629 |
/* Allow for error propagation */
|
|
|
630 |
return ( NULL_id ) ;
|
|
|
631 |
}
|
|
|
632 |
default :
|
|
|
633 |
error_lab : {
|
|
|
634 |
/* No other identifiers can be redeclared */
|
|
|
635 |
if ( is_member ) {
|
|
|
636 |
/* Member redeclaration */
|
|
|
637 |
err = ERR_class_mem_redecl ( id, id_loc ( id ) ) ;
|
|
|
638 |
} else {
|
|
|
639 |
/* Object redeclaration */
|
|
|
640 |
err = ERR_basic_odr_decl ( id, id_loc ( id ) ) ;
|
|
|
641 |
}
|
|
|
642 |
IGNORE overload_error ( id, err, reason ) ;
|
|
|
643 |
return ( NULL_id ) ;
|
|
|
644 |
}
|
|
|
645 |
}
|
|
|
646 |
|
|
|
647 |
/* Check declaration specifiers */
|
|
|
648 |
ds_old = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
649 |
if ( ( ds | ds_old ) & dspec_reserve ) {
|
|
|
650 |
/* Reserved names can't be redeclared */
|
|
|
651 |
reason = 0 ;
|
|
|
652 |
goto error_lab ;
|
|
|
653 |
}
|
|
|
654 |
|
|
|
655 |
/* Check for objects with no linkage */
|
|
|
656 |
ln = ( ds & dspec_linkage ) ;
|
|
|
657 |
ln_old = ( ds_old & dspec_linkage ) ;
|
|
|
658 |
if ( ln == dspec_none || ln_old == dspec_none ) {
|
|
|
659 |
/* Can't redeclare objects with no linkage */
|
|
|
660 |
if ( !is_function ) {
|
|
|
661 |
reason = 0 ;
|
|
|
662 |
goto error_lab ;
|
|
|
663 |
}
|
|
|
664 |
}
|
|
|
665 |
|
|
|
666 |
/* Check previous type */
|
|
|
667 |
s = DEREF_type ( pt ) ;
|
|
|
668 |
s = check_compatible ( s, t, 0, &err, 1 ) ;
|
|
|
669 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
670 |
/* Incompatible declaration */
|
|
|
671 |
PTR ( LOCATION ) loc = id_loc ( id ) ;
|
|
|
672 |
err = concat_error ( err, ERR_basic_link_decl_type ( id, loc ) ) ;
|
|
|
673 |
if ( ( ds | ds_old ) & dspec_token ) {
|
|
|
674 |
/* Allow for interface declarations */
|
|
|
675 |
err = set_severity ( err, OPT_interf_incompat, -1 ) ;
|
|
|
676 |
}
|
|
|
677 |
if ( overload_error ( id, err, reason ) == ERROR_SERIOUS ) {
|
|
|
678 |
return ( NULL_id ) ;
|
|
|
679 |
}
|
|
|
680 |
}
|
|
|
681 |
if ( is_function ) {
|
|
|
682 |
/* Sanity check for error types */
|
|
|
683 |
if ( type_tag ( s ) != type_func_tag ) return ( NULL_id ) ;
|
|
|
684 |
} else {
|
|
|
685 |
if ( type_tag ( s ) == type_func_tag ) return ( NULL_id ) ;
|
|
|
686 |
}
|
|
|
687 |
if ( def >= 0 ) COPY_type ( pt, s ) ;
|
|
|
688 |
|
|
|
689 |
/* Check for redeclaration of aliases */
|
|
|
690 |
if ( ( ds | ds_old ) & dspec_alias ) {
|
|
|
691 |
PTR ( LOCATION ) loc = id_loc ( id ) ;
|
|
|
692 |
report ( decl_loc, ERR_dcl_nspace_udecl_redecl ( id, loc ) ) ;
|
|
|
693 |
}
|
|
|
694 |
|
|
|
695 |
/* Check for inconsistent linkage */
|
|
|
696 |
if ( ln != ln_old ) {
|
|
|
697 |
ERROR err1 ;
|
|
|
698 |
DECL_SPEC ln_new ;
|
|
|
699 |
PTR ( LOCATION ) loc = id_loc ( id ) ;
|
|
|
700 |
if ( ln_old == dspec_static ) {
|
|
|
701 |
err1 = ERR_dcl_stc_internal ( id, loc ) ;
|
|
|
702 |
} else {
|
|
|
703 |
err1 = ERR_dcl_stc_external ( id, loc ) ;
|
|
|
704 |
if ( is_member ) {
|
|
|
705 |
/* Members have external linkage */
|
|
|
706 |
ERROR err2 = ERR_basic_link_mem_extern ( id ) ;
|
|
|
707 |
err1 = concat_error ( err2, err1 ) ;
|
|
|
708 |
}
|
|
|
709 |
}
|
|
|
710 |
if ( reason == 3 ) {
|
|
|
711 |
/* Identification of objects with C linkage */
|
|
|
712 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
713 |
ERROR err2 = ERR_dcl_link_redecl ( nm, loc ) ;
|
|
|
714 |
err1 = concat_error ( err1, err2 ) ;
|
|
|
715 |
}
|
|
|
716 |
if ( def == -1 && option ( OPT_link_internal ) == OPTION_OFF ) {
|
|
|
717 |
ln_new = dspec_extern ;
|
|
|
718 |
} else {
|
|
|
719 |
ln_new = dspec_static ;
|
|
|
720 |
}
|
|
|
721 |
ds_old = ( ln_new | ( ds_old & ~dspec_linkage ) ) ;
|
|
|
722 |
report ( decl_loc, err1 ) ;
|
|
|
723 |
changed = 1 ;
|
|
|
724 |
}
|
|
|
725 |
|
|
|
726 |
/* Check language specifier */
|
|
|
727 |
ln = crt_linkage ;
|
|
|
728 |
if ( ln != dspec_none ) {
|
|
|
729 |
/* Check against the current language */
|
|
|
730 |
ln_old = ( ds_old & dspec_language ) ;
|
|
|
731 |
if ( ( ds_old & dspec_extern ) && ln != ln_old ) {
|
|
|
732 |
/* Report inconsistent linkage */
|
|
|
733 |
if ( !is_member ) {
|
|
|
734 |
/* Should this only apply to functions? */
|
|
|
735 |
PTR ( LOCATION ) loc = id_loc ( id ) ;
|
|
|
736 |
string lang = linkage_string ( ln_old, cv_none ) ;
|
|
|
737 |
report ( decl_loc, ERR_dcl_link_lang ( id, lang, loc ) ) ;
|
|
|
738 |
ds_old = adjust_linkage ( ds_old, is_member ) ;
|
|
|
739 |
changed = 1 ;
|
|
|
740 |
}
|
|
|
741 |
}
|
|
|
742 |
}
|
|
|
743 |
|
|
|
744 |
/* Check for inline specifier */
|
|
|
745 |
if ( ds & dspec_inline ) {
|
|
|
746 |
ds_old |= dspec_inline ;
|
|
|
747 |
changed = 1 ;
|
|
|
748 |
}
|
|
|
749 |
|
|
|
750 |
/* Mark whether this declaration is a definition */
|
|
|
751 |
if ( def >= 0 ) {
|
|
|
752 |
if ( ds & dspec_defn ) {
|
|
|
753 |
ds_old |= dspec_defn ;
|
|
|
754 |
} else {
|
|
|
755 |
ds_old &= ~dspec_defn ;
|
|
|
756 |
}
|
|
|
757 |
}
|
|
|
758 |
|
|
|
759 |
/* Compatible redeclaration */
|
|
|
760 |
COPY_dspec ( id_storage ( id ), ds_old ) ;
|
|
|
761 |
if ( changed ) update_tag ( id, 0 ) ;
|
|
|
762 |
return ( id ) ;
|
|
|
763 |
}
|
|
|
764 |
|
|
|
765 |
|
|
|
766 |
/*
|
|
|
767 |
REDECLARE A FUNCTION IDENTIFIER
|
|
|
768 |
|
|
|
769 |
This routine is similar to redecl_id except that it allows for function
|
|
|
770 |
overloading. As before it returns id if this is a redeclaration of an
|
|
|
771 |
existing function, and the null identifier otherwise. However in the
|
|
|
772 |
latter case any functions overloaded by the declaration are returned
|
|
|
773 |
via over.
|
|
|
774 |
*/
|
|
|
775 |
|
|
|
776 |
IDENTIFIER redecl_func
|
|
|
777 |
PROTO_N ( ( ds, t, id, tag, over, def ) )
|
|
|
778 |
PROTO_T ( DECL_SPEC ds X TYPE t X IDENTIFIER id X unsigned tag X
|
|
|
779 |
IDENTIFIER *over X int def )
|
|
|
780 |
{
|
|
|
781 |
int reason = 0 ;
|
|
|
782 |
IDENTIFIER fid = id ;
|
|
|
783 |
#if LANGUAGE_CPP
|
|
|
784 |
if ( IS_id_function_etc ( fid ) ) {
|
|
|
785 |
DECL_SPEC ds_old ;
|
|
|
786 |
*over = fid ;
|
|
|
787 |
|
|
|
788 |
/* Scan through overloaded functions for a match */
|
|
|
789 |
while ( !IS_NULL_id ( fid ) ) {
|
|
|
790 |
int m ;
|
|
|
791 |
TYPE s ;
|
|
|
792 |
int mq = 1 ;
|
|
|
793 |
if ( ( ds & dspec_extern ) && crt_linkage == dspec_c ) {
|
|
|
794 |
/* Two functions with C linkage are the same */
|
|
|
795 |
ds_old = DEREF_dspec ( id_storage ( fid ) ) ;
|
|
|
796 |
if ( ( ds_old & dspec_c ) && IS_id_function ( fid ) ) {
|
|
|
797 |
reason = 1 ;
|
|
|
798 |
break ;
|
|
|
799 |
}
|
|
|
800 |
}
|
|
|
801 |
|
|
|
802 |
/* Two functions with the same parameters are the same */
|
|
|
803 |
s = DEREF_type ( id_function_etc_type ( fid ) ) ;
|
|
|
804 |
if ( tag == id_stat_mem_func_tag ) mq = 0 ;
|
|
|
805 |
if ( IS_id_stat_mem_func ( fid ) ) mq = 0 ;
|
|
|
806 |
m = eq_func_type ( t, s, mq, 0 ) ;
|
|
|
807 |
if ( m ) {
|
|
|
808 |
/* Function types basically match */
|
|
|
809 |
if ( m == 1 ) {
|
|
|
810 |
/* Return types don't match */
|
|
|
811 |
reason = 2 ;
|
|
|
812 |
}
|
|
|
813 |
break ;
|
|
|
814 |
}
|
|
|
815 |
fid = DEREF_id ( id_function_etc_over ( fid ) ) ;
|
|
|
816 |
}
|
|
|
817 |
|
|
|
818 |
if ( IS_NULL_id ( fid ) ) {
|
|
|
819 |
/* No match found */
|
|
|
820 |
IDENTIFIER tid = find_template ( id, 0 ) ;
|
|
|
821 |
if ( !IS_NULL_id ( tid ) ) {
|
|
|
822 |
/* Must have match with template specialisation */
|
|
|
823 |
report ( decl_loc, ERR_temp_spec_type ( t, id ) ) ;
|
|
|
824 |
return ( NULL_id ) ;
|
|
|
825 |
}
|
|
|
826 |
if ( crt_id_qualifier != qual_none ) {
|
|
|
827 |
/* Must have match with qualified identifier */
|
|
|
828 |
if ( def == -2 && tag == id_function_tag ) {
|
|
|
829 |
/* Allow for name injection */
|
|
|
830 |
/* EMPTY */
|
|
|
831 |
} else {
|
|
|
832 |
report ( decl_loc, ERR_basic_link_unmatch ( t, id ) ) ;
|
|
|
833 |
}
|
|
|
834 |
return ( NULL_id ) ;
|
|
|
835 |
}
|
|
|
836 |
if ( reason == 0 ) return ( NULL_id ) ;
|
|
|
837 |
fid = id ;
|
|
|
838 |
}
|
|
|
839 |
|
|
|
840 |
/* Match found */
|
|
|
841 |
ds_old = DEREF_dspec ( id_storage ( fid ) ) ;
|
|
|
842 |
if ( ( ds_old & dspec_implicit ) && !( ds & dspec_implicit ) ) {
|
|
|
843 |
if ( IS_id_mem_func ( fid ) ) {
|
|
|
844 |
/* Matches implicitly declared member function */
|
|
|
845 |
report ( decl_loc, ERR_class_special_decl ( fid ) ) ;
|
|
|
846 |
return ( NULL_id ) ;
|
|
|
847 |
}
|
|
|
848 |
}
|
|
|
849 |
if ( ds_old & dspec_inherit ) {
|
|
|
850 |
/* Inherited functions (including aliases) are hidden */
|
|
|
851 |
return ( NULL_id ) ;
|
|
|
852 |
}
|
|
|
853 |
/* *over = NULL_id ; */
|
|
|
854 |
}
|
|
|
855 |
#else
|
|
|
856 |
/* Don't check overloading in C */
|
|
|
857 |
*over = NULL_id ;
|
|
|
858 |
UNUSED ( tag ) ;
|
|
|
859 |
#endif
|
|
|
860 |
|
|
|
861 |
/* Redeclare id */
|
|
|
862 |
fid = redecl_id ( ds, t, fid, reason, def ) ;
|
|
|
863 |
if ( !IS_NULL_id ( fid ) ) {
|
|
|
864 |
TYPE form = DEREF_type ( id_function_etc_form ( id ) ) ;
|
|
|
865 |
if ( def >= 0 ) {
|
|
|
866 |
/* Allow for default arguments etc. */
|
|
|
867 |
TYPE s = DEREF_type ( id_function_etc_type ( fid ) ) ;
|
|
|
868 |
s = redecl_func_type ( fid, s, t, def, 1 ) ;
|
|
|
869 |
COPY_type ( id_function_etc_type ( fid ), s ) ;
|
|
|
870 |
}
|
|
|
871 |
if ( !IS_NULL_type ( form ) && IS_type_token ( form ) ) {
|
|
|
872 |
IDENTIFIER ext = DEREF_id ( type_token_tok ( form ) ) ;
|
|
|
873 |
if ( !IS_NULL_id ( ext ) && IS_id_token ( ext ) ) {
|
|
|
874 |
/* Check for tokenised functions */
|
|
|
875 |
ds = DEREF_dspec ( id_storage ( ext ) ) ;
|
|
|
876 |
ds |= dspec_explicit ;
|
|
|
877 |
COPY_dspec ( id_storage ( ext ), ds ) ;
|
|
|
878 |
if ( def ) {
|
|
|
879 |
/* Check for token definitions */
|
|
|
880 |
IGNORE define_func_token ( ext, fid ) ;
|
|
|
881 |
if ( ds & dspec_pure ) {
|
|
|
882 |
report ( decl_loc, ERR_token_def_not ( ext ) ) ;
|
|
|
883 |
}
|
|
|
884 |
}
|
|
|
885 |
}
|
|
|
886 |
}
|
|
|
887 |
}
|
|
|
888 |
return ( fid ) ;
|
|
|
889 |
}
|
|
|
890 |
|
|
|
891 |
|
|
|
892 |
/*
|
|
|
893 |
REDECLARE AN INHERITED OR ALIASED MEMBER
|
|
|
894 |
|
|
|
895 |
This routine is used to allow for declarations of class members to
|
|
|
896 |
override any inherited value of the member. id gives the inherited
|
|
|
897 |
value, mem is true for a member declaration, fn is true for a function
|
|
|
898 |
declaration or a declaration which can't coexist with a function
|
|
|
899 |
declaration. The null identifier is returned to indicate that id is
|
|
|
900 |
to be overridden.
|
|
|
901 |
*/
|
|
|
902 |
|
|
|
903 |
IDENTIFIER redecl_inherit
|
|
|
904 |
PROTO_N ( ( id, qual, mem, fn ) )
|
|
|
905 |
PROTO_T ( IDENTIFIER id X QUALIFIER qual X int mem X int fn )
|
|
|
906 |
{
|
|
|
907 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
908 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
909 |
if ( ds & dspec_alias ) {
|
|
|
910 |
if ( fn && IS_id_function_etc ( id ) ) {
|
|
|
911 |
/* Everything is a function */
|
|
|
912 |
return ( id ) ;
|
|
|
913 |
}
|
|
|
914 |
if ( mem && IS_id_class_name ( id ) ) {
|
|
|
915 |
/* Allow for injected type names */
|
|
|
916 |
if ( ds & dspec_implicit ) return ( id ) ;
|
|
|
917 |
}
|
|
|
918 |
if ( qual == qual_none ) {
|
|
|
919 |
/* New declaration */
|
|
|
920 |
PTR ( LOCATION ) loc = id_loc ( id ) ;
|
|
|
921 |
report ( decl_loc, ERR_dcl_nspace_udecl_multi ( id, loc ) ) ;
|
|
|
922 |
return ( NULL_id ) ;
|
|
|
923 |
}
|
|
|
924 |
}
|
|
|
925 |
if ( ds & dspec_inherit ) {
|
|
|
926 |
NAMESPACE ns ;
|
|
|
927 |
if ( mem ) return ( NULL_id ) ;
|
|
|
928 |
ns = DEREF_nspace ( id_parent ( id ) ) ;
|
|
|
929 |
id = DEREF_id ( id_alias ( id ) ) ;
|
|
|
930 |
report ( decl_loc, ERR_lookup_qual_decl ( id, ns ) ) ;
|
|
|
931 |
}
|
|
|
932 |
}
|
|
|
933 |
return ( id ) ;
|
|
|
934 |
}
|
|
|
935 |
|
|
|
936 |
|
|
|
937 |
/*
|
|
|
938 |
COPY AN IDENTIFIER
|
|
|
939 |
|
|
|
940 |
This routine creates a copy of the identifier id. If type is 1
|
|
|
941 |
then any type components in id are copied using copy_typedef, if it
|
|
|
942 |
is 2 they are further expanded using expand_type.
|
|
|
943 |
*/
|
|
|
944 |
|
|
|
945 |
IDENTIFIER copy_id
|
|
|
946 |
PROTO_N ( ( id, type ) )
|
|
|
947 |
PROTO_T ( IDENTIFIER id X int type )
|
|
|
948 |
{
|
|
|
949 |
TYPE t ;
|
|
|
950 |
ulong no ;
|
|
|
951 |
ulong dno ;
|
|
|
952 |
HASHID nm ;
|
|
|
953 |
unsigned tag ;
|
|
|
954 |
LOCATION loc ;
|
|
|
955 |
NAMESPACE ns ;
|
|
|
956 |
DECL_SPEC ds ;
|
|
|
957 |
IDENTIFIER lid ;
|
|
|
958 |
IDENTIFIER cid = id ;
|
|
|
959 |
|
|
|
960 |
/* Examine various cases */
|
|
|
961 |
if ( IS_NULL_id ( cid ) ) return ( NULL_id ) ;
|
|
|
962 |
tag = TAG_id ( cid ) ;
|
|
|
963 |
switch ( tag ) {
|
|
|
964 |
|
|
|
965 |
case id_class_name_tag :
|
|
|
966 |
case id_class_alias_tag :
|
|
|
967 |
case id_enum_name_tag :
|
|
|
968 |
case id_enum_alias_tag :
|
|
|
969 |
case id_type_alias_tag : {
|
|
|
970 |
/* Types */
|
|
|
971 |
BASE_TYPE bt ;
|
|
|
972 |
DECONS_id_class_name_etc ( nm, ds, ns, loc, lid, no,
|
|
|
973 |
dno, t, bt, cid ) ;
|
|
|
974 |
if ( type ) {
|
|
|
975 |
t = copy_typedef ( cid, t, cv_none ) ;
|
|
|
976 |
if ( type == 2 ) {
|
|
|
977 |
t = expand_type ( t, 1 ) ;
|
|
|
978 |
if ( tag == id_class_name_tag ) {
|
|
|
979 |
/* Name already copied by copy_class */
|
|
|
980 |
CLASS_TYPE ct ;
|
|
|
981 |
while ( IS_type_templ ( t ) ) {
|
|
|
982 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
983 |
}
|
|
|
984 |
ct = DEREF_ctype ( type_compound_defn ( t ) ) ;
|
|
|
985 |
cid = DEREF_id ( ctype_name ( ct ) ) ;
|
|
|
986 |
if ( !EQ_id ( cid, id ) ) {
|
|
|
987 |
COPY_hashid ( id_name ( cid ), nm ) ;
|
|
|
988 |
COPY_dspec ( id_storage ( cid ), ds ) ;
|
|
|
989 |
COPY_nspace ( id_parent ( cid ), ns ) ;
|
|
|
990 |
COPY_loc ( id_loc ( cid ), loc ) ;
|
|
|
991 |
break ;
|
|
|
992 |
}
|
|
|
993 |
}
|
|
|
994 |
if ( tag != id_enum_name_tag ) {
|
|
|
995 |
/* Find type alias tag */
|
|
|
996 |
unsigned ta = type_tag ( t ) ;
|
|
|
997 |
if ( ta == type_compound_tag ) {
|
|
|
998 |
tag = id_class_alias_tag ;
|
|
|
999 |
} else if ( ta == type_enumerate_tag ) {
|
|
|
1000 |
tag = id_enum_alias_tag ;
|
|
|
1001 |
} else {
|
|
|
1002 |
tag = id_type_alias_tag ;
|
|
|
1003 |
}
|
|
|
1004 |
}
|
|
|
1005 |
}
|
|
|
1006 |
}
|
|
|
1007 |
MAKE_id_class_name_etc ( tag, nm, ds, ns, loc, t, cid ) ;
|
|
|
1008 |
COPY_btype ( id_class_name_etc_rep ( cid ), bt ) ;
|
|
|
1009 |
break ;
|
|
|
1010 |
}
|
|
|
1011 |
|
|
|
1012 |
case id_variable_tag :
|
|
|
1013 |
case id_parameter_tag :
|
|
|
1014 |
case id_stat_member_tag : {
|
|
|
1015 |
/* Objects */
|
|
|
1016 |
EXP a, b ;
|
|
|
1017 |
DECONS_id_variable_etc ( nm, ds, ns, loc, lid, no, dno, t,
|
|
|
1018 |
a, b, cid ) ;
|
|
|
1019 |
if ( type ) {
|
|
|
1020 |
t = copy_typedef ( cid, t, cv_none ) ;
|
|
|
1021 |
if ( type == 2 ) t = expand_type ( t, 1 ) ;
|
|
|
1022 |
}
|
|
|
1023 |
MAKE_id_variable_etc ( tag, nm, ds, ns, loc, t, cid ) ;
|
|
|
1024 |
COPY_exp ( id_variable_etc_init ( cid ), a ) ;
|
|
|
1025 |
COPY_exp ( id_variable_etc_term ( cid ), b ) ;
|
|
|
1026 |
break ;
|
|
|
1027 |
}
|
|
|
1028 |
|
|
|
1029 |
case id_function_tag :
|
|
|
1030 |
case id_mem_func_tag :
|
|
|
1031 |
case id_stat_mem_func_tag : {
|
|
|
1032 |
/* Functions */
|
|
|
1033 |
EXP a ;
|
|
|
1034 |
TYPE form ;
|
|
|
1035 |
IDENTIFIER over ;
|
|
|
1036 |
LIST ( CLASS_TYPE ) fr ;
|
|
|
1037 |
DECONS_id_function_etc ( nm, ds, ns, loc, lid, no, dno, t,
|
|
|
1038 |
over, form, fr, a, cid ) ;
|
|
|
1039 |
if ( type ) {
|
|
|
1040 |
t = copy_typedef ( cid, t, cv_none ) ;
|
|
|
1041 |
if ( type == 2 ) t = expand_type ( t, 1 ) ;
|
|
|
1042 |
}
|
|
|
1043 |
MAKE_id_function_etc ( tag, nm, ds, ns, loc, t, over, cid ) ;
|
|
|
1044 |
COPY_type ( id_function_etc_form ( cid ), form ) ;
|
|
|
1045 |
COPY_exp ( id_function_etc_defn ( cid ), a ) ;
|
|
|
1046 |
if ( type == 2 ) {
|
|
|
1047 |
/* Copy friend classes */
|
|
|
1048 |
while ( !IS_NULL_list ( fr ) ) {
|
|
|
1049 |
TYPE r = NULL_type ;
|
|
|
1050 |
CLASS_TYPE cr = DEREF_ctype ( HEAD_list ( fr ) ) ;
|
|
|
1051 |
cr = expand_ctype ( cr, 2, &r ) ;
|
|
|
1052 |
friend_function ( cr, cid, 0 ) ;
|
|
|
1053 |
fr = TAIL_list ( fr ) ;
|
|
|
1054 |
}
|
|
|
1055 |
} else {
|
|
|
1056 |
COPY_list ( id_function_etc_chums ( cid ), fr ) ;
|
|
|
1057 |
}
|
|
|
1058 |
break ;
|
|
|
1059 |
}
|
|
|
1060 |
|
|
|
1061 |
case id_member_tag : {
|
|
|
1062 |
/* Members */
|
|
|
1063 |
GRAPH gr ;
|
|
|
1064 |
OFFSET off ;
|
|
|
1065 |
DECONS_id_member ( nm, ds, ns, loc, lid, no, dno, t, off,
|
|
|
1066 |
gr, cid ) ;
|
|
|
1067 |
if ( type ) {
|
|
|
1068 |
t = copy_typedef ( cid, t, cv_none ) ;
|
|
|
1069 |
if ( type == 2 ) {
|
|
|
1070 |
if ( IS_hashid_anon ( nm ) ) {
|
|
|
1071 |
/* Allow for anonymous bitfields */
|
|
|
1072 |
expand_anon_bitfield = 1 ;
|
|
|
1073 |
}
|
|
|
1074 |
t = expand_type ( t, 1 ) ;
|
|
|
1075 |
expand_anon_bitfield = 0 ;
|
|
|
1076 |
}
|
|
|
1077 |
}
|
|
|
1078 |
MAKE_id_member ( nm, ds, ns, loc, t, cid ) ;
|
|
|
1079 |
COPY_graph ( id_member_base ( cid ), gr ) ;
|
|
|
1080 |
COPY_off ( id_member_off ( cid ), off ) ;
|
|
|
1081 |
break ;
|
|
|
1082 |
}
|
|
|
1083 |
|
|
|
1084 |
case id_enumerator_tag : {
|
|
|
1085 |
/* Enumerators */
|
|
|
1086 |
EXP a ;
|
|
|
1087 |
ERROR err = NULL_err ;
|
|
|
1088 |
DECONS_id_enumerator ( nm, ds, ns, loc, lid, no, dno,
|
|
|
1089 |
t, a, cid ) ;
|
|
|
1090 |
if ( type == 2 ) {
|
|
|
1091 |
/* Copy enumerator value */
|
|
|
1092 |
TYPE s = expand_type ( t, 1 ) ;
|
|
|
1093 |
a = copy_exp ( a, t, s ) ;
|
|
|
1094 |
IGNORE make_nat_exp ( a, &err ) ;
|
|
|
1095 |
t = s ;
|
|
|
1096 |
}
|
|
|
1097 |
MAKE_id_enumerator ( nm, ds, ns, loc, t, a, cid ) ;
|
|
|
1098 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
1099 |
err = concat_error ( err, ERR_dcl_enum_const ( cid ) ) ;
|
|
|
1100 |
report ( crt_loc, err ) ;
|
|
|
1101 |
}
|
|
|
1102 |
break ;
|
|
|
1103 |
}
|
|
|
1104 |
|
|
|
1105 |
case id_token_tag : {
|
|
|
1106 |
/* Tokens */
|
|
|
1107 |
TOKEN sort ;
|
|
|
1108 |
IDENTIFIER alt ;
|
|
|
1109 |
DECONS_id_token ( nm, ds, ns, loc, lid, no, dno,
|
|
|
1110 |
sort, alt, cid ) ;
|
|
|
1111 |
if ( type == 2 ) {
|
|
|
1112 |
/* Expand token sort */
|
|
|
1113 |
sort = expand_sort ( sort, 1, 1 ) ;
|
|
|
1114 |
}
|
|
|
1115 |
MAKE_id_token ( nm, ds, ns, loc, sort, alt, cid ) ;
|
|
|
1116 |
break ;
|
|
|
1117 |
}
|
|
|
1118 |
|
|
|
1119 |
default : {
|
|
|
1120 |
/* Don't copy other identifiers */
|
|
|
1121 |
return ( cid ) ;
|
|
|
1122 |
}
|
|
|
1123 |
}
|
|
|
1124 |
if ( type != 2 ) {
|
|
|
1125 |
COPY_id ( id_alias ( cid ), lid ) ;
|
|
|
1126 |
COPY_ulong ( id_no ( cid ), no ) ;
|
|
|
1127 |
COPY_ulong ( id_dump ( cid ), dno ) ;
|
|
|
1128 |
}
|
|
|
1129 |
return ( cid ) ;
|
|
|
1130 |
}
|
|
|
1131 |
|
|
|
1132 |
|
|
|
1133 |
/*
|
|
|
1134 |
CREATE AN IDENTIFIER ALIAS
|
|
|
1135 |
|
|
|
1136 |
This routine creates an alias for the identifier id in the namespace
|
|
|
1137 |
ns. fn gives a list of function which the alias will overload if
|
|
|
1138 |
it is a function.
|
|
|
1139 |
*/
|
|
|
1140 |
|
|
|
1141 |
IDENTIFIER alias_id
|
|
|
1142 |
PROTO_N ( ( id, ns, fn, rec ) )
|
|
|
1143 |
PROTO_T ( IDENTIFIER id X NAMESPACE ns X IDENTIFIER fn X int rec )
|
|
|
1144 |
{
|
|
|
1145 |
IDENTIFIER cid = copy_id ( id, 1 ) ;
|
|
|
1146 |
if ( !EQ_id ( cid, id ) ) {
|
|
|
1147 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( cid ) ) ;
|
|
|
1148 |
DECL_SPEC acc = ( ds & dspec_access ) ;
|
|
|
1149 |
if ( acc ) {
|
|
|
1150 |
IDENTIFIER sid = DEREF_id ( nspace_name ( ns ) ) ;
|
|
|
1151 |
immediate_access ( sid, cid ) ;
|
|
|
1152 |
}
|
|
|
1153 |
ds = ( ( ds & ~dspec_access ) | dspec_alias | crt_access ) ;
|
|
|
1154 |
COPY_dspec ( id_storage ( cid ), ds ) ;
|
|
|
1155 |
COPY_nspace ( id_parent ( cid ), ns ) ;
|
|
|
1156 |
if ( do_dump ) dump_alias ( cid, id, &crt_loc ) ;
|
|
|
1157 |
if ( IS_id_function_etc ( cid ) ) {
|
|
|
1158 |
/* Deal with overloaded functions */
|
|
|
1159 |
IDENTIFIER over ;
|
|
|
1160 |
if ( rec ) {
|
|
|
1161 |
over = DEREF_id ( id_function_etc_over ( cid ) ) ;
|
|
|
1162 |
if ( IS_NULL_id ( over ) ) {
|
|
|
1163 |
over = fn ;
|
|
|
1164 |
} else {
|
|
|
1165 |
over = alias_id ( over, ns, fn, rec ) ;
|
|
|
1166 |
}
|
|
|
1167 |
} else {
|
|
|
1168 |
over = fn ;
|
|
|
1169 |
}
|
|
|
1170 |
COPY_id ( id_function_etc_over ( cid ), over ) ;
|
|
|
1171 |
}
|
|
|
1172 |
}
|
|
|
1173 |
return ( cid ) ;
|
|
|
1174 |
}
|
|
|
1175 |
|
|
|
1176 |
|
|
|
1177 |
/*
|
|
|
1178 |
DUMMY DECLARATION SPECIFIER
|
|
|
1179 |
|
|
|
1180 |
This value is used as a dummy declaration specifier in the adjusting
|
|
|
1181 |
of overloaded functions.
|
|
|
1182 |
*/
|
|
|
1183 |
|
|
|
1184 |
#define dspec_mark ( ( DECL_SPEC ) 0x7fffffff )
|
|
|
1185 |
|
|
|
1186 |
|
|
|
1187 |
/*
|
|
|
1188 |
REMOVE HIDDEN FUNCTIONS
|
|
|
1189 |
|
|
|
1190 |
This routine adjusts the set of overloaded functions id by removing
|
|
|
1191 |
any with storage field equal to dspec_mark.
|
|
|
1192 |
*/
|
|
|
1193 |
|
|
|
1194 |
static IDENTIFIER remove_functions
|
|
|
1195 |
PROTO_N ( ( id ) )
|
|
|
1196 |
PROTO_T ( IDENTIFIER id )
|
|
|
1197 |
{
|
|
|
1198 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
1199 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1200 |
IDENTIFIER over = DEREF_id ( id_function_etc_over ( id ) ) ;
|
|
|
1201 |
over = remove_functions ( over ) ;
|
|
|
1202 |
if ( ds == dspec_mark ) {
|
|
|
1203 |
id = over ;
|
|
|
1204 |
} else {
|
|
|
1205 |
COPY_id ( id_function_etc_over ( id ), over ) ;
|
|
|
1206 |
}
|
|
|
1207 |
}
|
|
|
1208 |
return ( id ) ;
|
|
|
1209 |
}
|
|
|
1210 |
|
|
|
1211 |
|
|
|
1212 |
/*
|
|
|
1213 |
COMPARE HIDING FUNCTIONS
|
|
|
1214 |
|
|
|
1215 |
This routine compares two functions id and over, one declared in the
|
|
|
1216 |
normal fashion and the other by a using-declaration. It returns
|
|
|
1217 |
true if the former overrides the latter.
|
|
|
1218 |
*/
|
|
|
1219 |
|
|
|
1220 |
static int compare_functions
|
|
|
1221 |
PROTO_N ( ( id, over, mem ) )
|
|
|
1222 |
PROTO_T ( IDENTIFIER id X IDENTIFIER over X int mem )
|
|
|
1223 |
{
|
|
|
1224 |
TYPE t = DEREF_type ( id_function_etc_type ( id ) ) ;
|
|
|
1225 |
TYPE s = DEREF_type ( id_function_etc_type ( over ) ) ;
|
|
|
1226 |
int eq = eq_func_type ( t, s, 1, 0 ) ;
|
|
|
1227 |
if ( eq ) {
|
|
|
1228 |
/* Equal parameter types */
|
|
|
1229 |
if ( mem ) return ( 1 ) ;
|
|
|
1230 |
}
|
|
|
1231 |
if ( eq >= 2 ) {
|
|
|
1232 |
/* Equal types */
|
|
|
1233 |
PTR ( LOCATION ) loc = id_loc ( over ) ;
|
|
|
1234 |
report ( crt_loc, ERR_dcl_nspace_udecl_multi ( over, loc ) ) ;
|
|
|
1235 |
return ( 1 ) ;
|
|
|
1236 |
}
|
|
|
1237 |
return ( 0 ) ;
|
|
|
1238 |
}
|
|
|
1239 |
|
|
|
1240 |
|
|
|
1241 |
/*
|
|
|
1242 |
MARK HIDDEN FUNCTIONS
|
|
|
1243 |
|
|
|
1244 |
This routine marks any functions which hide, or are hidden by, id in
|
|
|
1245 |
its set of overloaded functions. mem is true for member functions.
|
|
|
1246 |
Any hidden function is marked by setting its storage field to the
|
|
|
1247 |
value dspec_mark.
|
|
|
1248 |
*/
|
|
|
1249 |
|
|
|
1250 |
static int mark_functions
|
|
|
1251 |
PROTO_N ( ( id, mem ) )
|
|
|
1252 |
PROTO_T ( IDENTIFIER id X int mem )
|
|
|
1253 |
{
|
|
|
1254 |
int ret = 0 ;
|
|
|
1255 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1256 |
if ( ds != dspec_mark ) {
|
|
|
1257 |
IDENTIFIER over = DEREF_id ( id_function_etc_over ( id ) ) ;
|
|
|
1258 |
while ( !IS_NULL_id ( over ) ) {
|
|
|
1259 |
DECL_SPEC pds = DEREF_dspec ( id_storage ( over ) ) ;
|
|
|
1260 |
if ( pds != dspec_mark ) {
|
|
|
1261 |
if ( ds & dspec_alias ) {
|
|
|
1262 |
if ( pds & dspec_alias ) {
|
|
|
1263 |
/* Both are using declarations */
|
|
|
1264 |
IDENTIFIER a = DEREF_id ( id_alias ( id ) ) ;
|
|
|
1265 |
IDENTIFIER b = DEREF_id ( id_alias ( over ) ) ;
|
|
|
1266 |
if ( EQ_id ( a, b ) ) {
|
|
|
1267 |
/* Duplicate declarations */
|
|
|
1268 |
if ( mem ) {
|
|
|
1269 |
ERROR err ;
|
|
|
1270 |
PTR ( LOCATION ) loc = id_loc ( over ) ;
|
|
|
1271 |
err = ERR_class_mem_redecl ( over, loc ) ;
|
|
|
1272 |
report ( crt_loc, err ) ;
|
|
|
1273 |
}
|
|
|
1274 |
COPY_dspec ( id_storage ( over ), dspec_mark ) ;
|
|
|
1275 |
ret++ ;
|
|
|
1276 |
}
|
|
|
1277 |
} else {
|
|
|
1278 |
/* The first is a using declaration */
|
|
|
1279 |
if ( compare_functions ( id, over, mem ) ) {
|
|
|
1280 |
COPY_dspec ( id_storage ( id ), dspec_mark ) ;
|
|
|
1281 |
ret++ ;
|
|
|
1282 |
}
|
|
|
1283 |
}
|
|
|
1284 |
} else if ( pds & dspec_alias ) {
|
|
|
1285 |
/* The second is a using declaration */
|
|
|
1286 |
if ( compare_functions ( id, over, mem ) ) {
|
|
|
1287 |
COPY_dspec ( id_storage ( over ), dspec_mark ) ;
|
|
|
1288 |
ret++ ;
|
|
|
1289 |
break ;
|
|
|
1290 |
}
|
|
|
1291 |
}
|
|
|
1292 |
}
|
|
|
1293 |
over = DEREF_id ( id_function_etc_over ( over ) ) ;
|
|
|
1294 |
}
|
|
|
1295 |
}
|
|
|
1296 |
return ( ret ) ;
|
|
|
1297 |
}
|
|
|
1298 |
|
|
|
1299 |
|
|
|
1300 |
/*
|
|
|
1301 |
HANDLE HIDDEN FUNCTIONS WITH USING DECLARATIONS
|
|
|
1302 |
|
|
|
1303 |
The interaction of using declarations with the hiding and overriding
|
|
|
1304 |
of member functions is somewhat complex. It is implemented by this
|
|
|
1305 |
routine which adjusts the declarations of the overloaded functions id
|
|
|
1306 |
up to the existing declarations over. mem is true for member functions.
|
|
|
1307 |
*/
|
|
|
1308 |
|
|
|
1309 |
IDENTIFIER hide_functions
|
|
|
1310 |
PROTO_N ( ( id, over, mem ) )
|
|
|
1311 |
PROTO_T ( IDENTIFIER id X IDENTIFIER over X int mem )
|
|
|
1312 |
{
|
|
|
1313 |
if ( !IS_NULL_id ( over ) ) {
|
|
|
1314 |
int marked = 0 ;
|
|
|
1315 |
IDENTIFIER pid = id ;
|
|
|
1316 |
while ( !EQ_id ( pid, over ) ) {
|
|
|
1317 |
marked += mark_functions ( pid, mem ) ;
|
|
|
1318 |
pid = DEREF_id ( id_function_etc_over ( pid ) ) ;
|
|
|
1319 |
}
|
|
|
1320 |
if ( marked ) id = remove_functions ( id ) ;
|
|
|
1321 |
pid = id ;
|
|
|
1322 |
while ( !IS_NULL_id ( pid ) ) {
|
|
|
1323 |
/* Mark template functions */
|
|
|
1324 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( pid ) ) ;
|
|
|
1325 |
if ( ds & dspec_template ) {
|
|
|
1326 |
templ_func_decl ( id ) ;
|
|
|
1327 |
break ;
|
|
|
1328 |
}
|
|
|
1329 |
pid = DEREF_id ( id_function_etc_over ( pid ) ) ;
|
|
|
1330 |
}
|
|
|
1331 |
}
|
|
|
1332 |
return ( id ) ;
|
|
|
1333 |
}
|
|
|
1334 |
|
|
|
1335 |
|
|
|
1336 |
/*
|
|
|
1337 |
CHECK THE VISIBILITY OF AN IDENTIFIER
|
|
|
1338 |
|
|
|
1339 |
A member name in a using declaration should be visible from a direct
|
|
|
1340 |
base class. This routine checks whether the member id meets this
|
|
|
1341 |
criterion by comparing it with its look-up in the direct base
|
|
|
1342 |
classes, pid.
|
|
|
1343 |
*/
|
|
|
1344 |
|
|
|
1345 |
static int using_visible
|
|
|
1346 |
PROTO_N ( ( id, pid ) )
|
|
|
1347 |
PROTO_T ( IDENTIFIER id X IDENTIFIER pid )
|
|
|
1348 |
{
|
|
|
1349 |
while ( !IS_NULL_id ( pid ) ) {
|
|
|
1350 |
IDENTIFIER qid = DEREF_id ( id_alias ( pid ) ) ;
|
|
|
1351 |
if ( EQ_id ( qid, id ) ) return ( 1 ) ;
|
|
|
1352 |
switch ( TAG_id ( pid ) ) {
|
|
|
1353 |
case id_function_tag :
|
|
|
1354 |
case id_mem_func_tag :
|
|
|
1355 |
case id_stat_mem_func_tag : {
|
|
|
1356 |
/* Check overloaded functions */
|
|
|
1357 |
pid = DEREF_id ( id_function_etc_over ( pid ) ) ;
|
|
|
1358 |
break ;
|
|
|
1359 |
}
|
|
|
1360 |
case id_ambig_tag : {
|
|
|
1361 |
/* Check ambiguous identifiers */
|
|
|
1362 |
LIST ( IDENTIFIER ) pids ;
|
|
|
1363 |
pids = DEREF_list ( id_ambig_ids ( pid ) ) ;
|
|
|
1364 |
while ( !IS_NULL_list ( pids ) ) {
|
|
|
1365 |
pid = DEREF_id ( HEAD_list ( pids ) ) ;
|
|
|
1366 |
if ( using_visible ( id, pid ) ) return ( 1 ) ;
|
|
|
1367 |
pids = TAIL_list ( pids ) ;
|
|
|
1368 |
}
|
|
|
1369 |
return ( 0 ) ;
|
|
|
1370 |
}
|
|
|
1371 |
default : {
|
|
|
1372 |
/* Other identifiers */
|
|
|
1373 |
return ( 0 ) ;
|
|
|
1374 |
}
|
|
|
1375 |
}
|
|
|
1376 |
}
|
|
|
1377 |
return ( 0 ) ;
|
|
|
1378 |
}
|
|
|
1379 |
|
|
|
1380 |
|
|
|
1381 |
/*
|
|
|
1382 |
PROCESS A CLASS USING DECLARATION
|
|
|
1383 |
|
|
|
1384 |
This routine processes a using-declaration of the identifier id in
|
|
|
1385 |
the case when this declaration is a member-declaration.
|
|
|
1386 |
*/
|
|
|
1387 |
|
|
|
1388 |
static IDENTIFIER using_member
|
|
|
1389 |
PROTO_N ( ( id, type ) )
|
|
|
1390 |
PROTO_T ( IDENTIFIER id X int type )
|
|
|
1391 |
{
|
|
|
1392 |
MEMBER mem ;
|
|
|
1393 |
IDENTIFIER aid ;
|
|
|
1394 |
IDENTIFIER pid ;
|
|
|
1395 |
|
|
|
1396 |
/* Check the identifier */
|
|
|
1397 |
NAMESPACE cns = crt_namespace ;
|
|
|
1398 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
1399 |
GRAPH gr = is_subfield ( cns, id ) ;
|
|
|
1400 |
if ( IS_NULL_graph ( gr ) ) {
|
|
|
1401 |
/* id is not a member of a base class */
|
|
|
1402 |
CLASS_TYPE ct = crt_class ;
|
|
|
1403 |
report ( crt_loc, ERR_dcl_nspace_udecl_base ( id, ct ) ) ;
|
|
|
1404 |
return ( NULL_id ) ;
|
|
|
1405 |
} else {
|
|
|
1406 |
GRAPH gu = DEREF_graph ( graph_up ( gr ) ) ;
|
|
|
1407 |
GRAPH gt = DEREF_graph ( graph_top ( gr ) ) ;
|
|
|
1408 |
if ( EQ_graph ( gt, gr ) ) {
|
|
|
1409 |
/* id is a member of the current class */
|
|
|
1410 |
report ( crt_loc, ERR_dcl_nspace_udecl_mem ( id ) ) ;
|
|
|
1411 |
return ( id ) ;
|
|
|
1412 |
}
|
|
|
1413 |
if ( !EQ_graph ( gt, gu ) ) {
|
|
|
1414 |
/* Not a member of a direct base class */
|
|
|
1415 |
IDENTIFIER bid = search_base_field ( cns, nm, type, 0 ) ;
|
|
|
1416 |
aid = id ;
|
|
|
1417 |
while ( !IS_NULL_id ( aid ) ) {
|
|
|
1418 |
IDENTIFIER qid = find_template ( aid, 1 ) ;
|
|
|
1419 |
if ( IS_NULL_id ( qid ) ) qid = aid ;
|
|
|
1420 |
qid = DEREF_id ( id_alias ( qid ) ) ;
|
|
|
1421 |
if ( !using_visible ( qid, bid ) ) {
|
|
|
1422 |
CLASS_TYPE ct = crt_class ;
|
|
|
1423 |
report ( crt_loc, ERR_dcl_nspace_udecl_vis ( aid, ct ) ) ;
|
|
|
1424 |
break ;
|
|
|
1425 |
}
|
|
|
1426 |
if ( !IS_id_function_etc ( aid ) ) break ;
|
|
|
1427 |
aid = DEREF_id ( id_function_etc_over ( aid ) ) ;
|
|
|
1428 |
}
|
|
|
1429 |
}
|
|
|
1430 |
}
|
|
|
1431 |
|
|
|
1432 |
/* Check declarations */
|
|
|
1433 |
mem = search_member ( cns, nm, 1 ) ;
|
|
|
1434 |
if ( type ) {
|
|
|
1435 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1436 |
if ( ds & dspec_template ) {
|
|
|
1437 |
pid = DEREF_id ( member_id ( mem ) ) ;
|
|
|
1438 |
} else {
|
|
|
1439 |
pid = type_member ( mem, 3 ) ;
|
|
|
1440 |
}
|
|
|
1441 |
} else {
|
|
|
1442 |
pid = DEREF_id ( member_id ( mem ) ) ;
|
|
|
1443 |
if ( !IS_NULL_id ( pid ) && is_tagged_type ( pid ) ) {
|
|
|
1444 |
/* Allow hiding of non-template classes */
|
|
|
1445 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( pid ) ) ;
|
|
|
1446 |
if ( !( ds & dspec_template ) ) pid = NULL_id ;
|
|
|
1447 |
}
|
|
|
1448 |
}
|
|
|
1449 |
if ( !IS_NULL_id ( pid ) ) {
|
|
|
1450 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( pid ) ) ;
|
|
|
1451 |
if ( ( ds & dspec_inherit ) && !( ds & dspec_alias ) ) {
|
|
|
1452 |
/* Ignore inherited members */
|
|
|
1453 |
pid = NULL_id ;
|
|
|
1454 |
} else {
|
|
|
1455 |
IDENTIFIER rid = DEREF_id ( id_alias ( id ) ) ;
|
|
|
1456 |
IDENTIFIER qid = DEREF_id ( id_alias ( pid ) ) ;
|
|
|
1457 |
if ( EQ_id ( rid, qid ) ) {
|
|
|
1458 |
/* Redeclaration of existing meaning */
|
|
|
1459 |
if ( !type ) {
|
|
|
1460 |
PTR ( LOCATION ) loc = id_loc ( pid ) ;
|
|
|
1461 |
ERROR err = ERR_class_mem_redecl ( pid, loc ) ;
|
|
|
1462 |
report ( crt_loc, err ) ;
|
|
|
1463 |
}
|
|
|
1464 |
adjust_access ( pid, crt_access, 1 ) ;
|
|
|
1465 |
return ( pid ) ;
|
|
|
1466 |
}
|
|
|
1467 |
if ( IS_id_function_etc ( id ) && IS_id_function_etc ( pid ) ) {
|
|
|
1468 |
/* Both new and old meanings are functions */
|
|
|
1469 |
/* EMPTY */
|
|
|
1470 |
} else {
|
|
|
1471 |
/* One meaning is not a function */
|
|
|
1472 |
PTR ( LOCATION ) loc = id_loc ( pid ) ;
|
|
|
1473 |
ERROR err = ERR_dcl_nspace_udecl_multi ( pid, loc ) ;
|
|
|
1474 |
report ( crt_loc, err ) ;
|
|
|
1475 |
return ( NULL_id ) ;
|
|
|
1476 |
}
|
|
|
1477 |
}
|
|
|
1478 |
}
|
|
|
1479 |
|
|
|
1480 |
/* Find inherited member */
|
|
|
1481 |
id = search_subfield ( cns, gr, id ) ;
|
|
|
1482 |
aid = alias_id ( id, cns, pid, 1 ) ;
|
|
|
1483 |
if ( !IS_NULL_id ( pid ) ) {
|
|
|
1484 |
/* Deal with function hiding */
|
|
|
1485 |
aid = hide_functions ( aid, pid, 1 ) ;
|
|
|
1486 |
}
|
|
|
1487 |
adjust_access ( id, crt_access, 1 ) ;
|
|
|
1488 |
if ( type ) {
|
|
|
1489 |
set_type_member ( mem, aid ) ;
|
|
|
1490 |
} else {
|
|
|
1491 |
set_member ( mem, aid ) ;
|
|
|
1492 |
}
|
|
|
1493 |
return ( aid ) ;
|
|
|
1494 |
}
|
|
|
1495 |
|
|
|
1496 |
|
|
|
1497 |
/*
|
|
|
1498 |
PROCESS A NAMESPACE USING DECLARATION
|
|
|
1499 |
|
|
|
1500 |
This routine processes a using-declaration of the identifier id in
|
|
|
1501 |
the case when this declaration is not a member-declaration.
|
|
|
1502 |
*/
|
|
|
1503 |
|
|
|
1504 |
static IDENTIFIER using_name
|
|
|
1505 |
PROTO_N ( ( id ) )
|
|
|
1506 |
PROTO_T ( IDENTIFIER id )
|
|
|
1507 |
{
|
|
|
1508 |
int type ;
|
|
|
1509 |
HASHID nm ;
|
|
|
1510 |
MEMBER mem ;
|
|
|
1511 |
IDENTIFIER pid ;
|
|
|
1512 |
|
|
|
1513 |
/* Check the identifier */
|
|
|
1514 |
NAMESPACE cns = crt_namespace ;
|
|
|
1515 |
NAMESPACE ns = DEREF_nspace ( id_parent ( id ) ) ;
|
|
|
1516 |
if ( IS_nspace_ctype ( ns ) ) {
|
|
|
1517 |
/* id denotes a class member */
|
|
|
1518 |
report ( crt_loc, ERR_dcl_nspace_udecl_id ( id ) ) ;
|
|
|
1519 |
switch ( TAG_id ( id ) ) {
|
|
|
1520 |
case id_member_tag :
|
|
|
1521 |
case id_stat_member_tag :
|
|
|
1522 |
case id_mem_func_tag :
|
|
|
1523 |
case id_stat_mem_func_tag : {
|
|
|
1524 |
/* Don't even try in these cases */
|
|
|
1525 |
return ( NULL_id ) ;
|
|
|
1526 |
}
|
|
|
1527 |
}
|
|
|
1528 |
}
|
|
|
1529 |
|
|
|
1530 |
/* Check declarations */
|
|
|
1531 |
nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
1532 |
mem = search_member ( cns, nm, 1 ) ;
|
|
|
1533 |
type = is_tagged_type ( id ) ;
|
|
|
1534 |
if ( type ) {
|
|
|
1535 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1536 |
if ( ds & dspec_template ) {
|
|
|
1537 |
pid = DEREF_id ( member_id ( mem ) ) ;
|
|
|
1538 |
} else {
|
|
|
1539 |
pid = type_member ( mem, 3 ) ;
|
|
|
1540 |
}
|
|
|
1541 |
} else {
|
|
|
1542 |
pid = DEREF_id ( member_id ( mem ) ) ;
|
|
|
1543 |
if ( !IS_id_nspace_name_etc ( id ) ) {
|
|
|
1544 |
if ( !IS_NULL_id ( pid ) && is_tagged_type ( pid ) ) {
|
|
|
1545 |
/* Allow hiding of non-template classes */
|
|
|
1546 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( pid ) ) ;
|
|
|
1547 |
if ( !( ds & dspec_template ) ) pid = NULL_id ;
|
|
|
1548 |
}
|
|
|
1549 |
}
|
|
|
1550 |
}
|
|
|
1551 |
if ( !IS_NULL_id ( pid ) ) {
|
|
|
1552 |
IDENTIFIER qid = DEREF_id ( id_alias ( pid ) ) ;
|
|
|
1553 |
if ( EQ_id ( id, qid ) ) {
|
|
|
1554 |
/* Redeclaration of existing meaning */
|
|
|
1555 |
if ( EQ_id ( id, pid ) ) {
|
|
|
1556 |
report ( crt_loc, ERR_dcl_nspace_udecl_mem ( id ) ) ;
|
|
|
1557 |
}
|
|
|
1558 |
return ( pid ) ;
|
|
|
1559 |
}
|
|
|
1560 |
if ( IS_id_function_etc ( id ) && IS_id_function_etc ( pid ) ) {
|
|
|
1561 |
/* Both new and old meanings are functions */
|
|
|
1562 |
/* EMPTY */
|
|
|
1563 |
} else {
|
|
|
1564 |
/* Invalid redeclaration */
|
|
|
1565 |
PTR ( LOCATION ) loc = id_loc ( pid ) ;
|
|
|
1566 |
ERROR err = ERR_dcl_nspace_udecl_multi ( pid, loc ) ;
|
|
|
1567 |
report ( crt_loc, err ) ;
|
|
|
1568 |
pid = NULL_id ;
|
|
|
1569 |
}
|
|
|
1570 |
}
|
|
|
1571 |
|
|
|
1572 |
/* Create the alias */
|
|
|
1573 |
id = alias_id ( id, cns, pid, 1 ) ;
|
|
|
1574 |
if ( !IS_NULL_id ( pid ) ) {
|
|
|
1575 |
/* Deal with function hiding */
|
|
|
1576 |
id = hide_functions ( id, pid, 0 ) ;
|
|
|
1577 |
}
|
|
|
1578 |
if ( type ) {
|
|
|
1579 |
set_type_member ( mem, id ) ;
|
|
|
1580 |
} else {
|
|
|
1581 |
set_member ( mem, id ) ;
|
|
|
1582 |
}
|
|
|
1583 |
return ( id ) ;
|
|
|
1584 |
}
|
|
|
1585 |
|
|
|
1586 |
|
|
|
1587 |
/*
|
|
|
1588 |
PROCESS A USING DECLARATION
|
|
|
1589 |
|
|
|
1590 |
This routine processes a using-declaration of the identifier id. Note
|
|
|
1591 |
that this includes the access declarations used to modify access to
|
|
|
1592 |
class members.
|
|
|
1593 |
*/
|
|
|
1594 |
|
|
|
1595 |
IDENTIFIER using_identifier
|
|
|
1596 |
PROTO_N ( ( id ) )
|
|
|
1597 |
PROTO_T ( IDENTIFIER id )
|
|
|
1598 |
{
|
|
|
1599 |
/* Identifier must be qualified */
|
|
|
1600 |
MEMBER mem ;
|
|
|
1601 |
HASHID unm ;
|
|
|
1602 |
IDENTIFIER cid ;
|
|
|
1603 |
IDENTIFIER uid = id ;
|
|
|
1604 |
NAMESPACE uns = DEREF_nspace ( id_parent ( uid ) ) ;
|
|
|
1605 |
uid = constr_name ( uns, uid ) ;
|
|
|
1606 |
unm = DEREF_hashid ( id_name ( uid ) ) ;
|
|
|
1607 |
if ( crt_id_qualifier == qual_none ) {
|
|
|
1608 |
report ( crt_loc, ERR_dcl_nspace_udecl_unqual () ) ;
|
|
|
1609 |
return ( uid ) ;
|
|
|
1610 |
}
|
|
|
1611 |
|
|
|
1612 |
/* Report undefined and ambiguous identifiers */
|
|
|
1613 |
switch ( TAG_id ( uid ) ) {
|
|
|
1614 |
case id_ambig_tag : {
|
|
|
1615 |
/* Introduce all the ambiguous meanings */
|
|
|
1616 |
LIST ( IDENTIFIER ) pids = DEREF_list ( id_ambig_ids ( uid ) ) ;
|
|
|
1617 |
while ( !IS_NULL_list ( pids ) ) {
|
|
|
1618 |
IDENTIFIER pid = DEREF_id ( HEAD_list ( pids ) ) ;
|
|
|
1619 |
IGNORE using_identifier ( pid ) ;
|
|
|
1620 |
pids = TAIL_list ( pids ) ;
|
|
|
1621 |
}
|
|
|
1622 |
uid = find_qual_id ( crt_namespace, unm, 0, 0 ) ;
|
|
|
1623 |
return ( uid ) ;
|
|
|
1624 |
}
|
|
|
1625 |
case id_undef_tag : {
|
|
|
1626 |
/* Report undeclared identifiers */
|
|
|
1627 |
report ( crt_loc, ERR_lookup_qual_undef ( unm, uns ) ) ;
|
|
|
1628 |
return ( uid ) ;
|
|
|
1629 |
}
|
|
|
1630 |
}
|
|
|
1631 |
|
|
|
1632 |
/* Can have constructors or destructors */
|
|
|
1633 |
switch ( TAG_hashid ( unm ) ) {
|
|
|
1634 |
case hashid_constr_tag :
|
|
|
1635 |
case hashid_destr_tag : {
|
|
|
1636 |
report ( crt_loc, ERR_dcl_nspace_udecl_constr ( uid ) ) ;
|
|
|
1637 |
return ( uid ) ;
|
|
|
1638 |
}
|
|
|
1639 |
}
|
|
|
1640 |
|
|
|
1641 |
/* Check for hidden type names */
|
|
|
1642 |
mem = search_member ( uns, unm, 0 ) ;
|
|
|
1643 |
cid = type_member ( mem, 1 ) ;
|
|
|
1644 |
if ( EQ_id ( cid, uid ) ) cid = NULL_id ;
|
|
|
1645 |
|
|
|
1646 |
/* Process the declaration */
|
|
|
1647 |
if ( in_class_defn ) {
|
|
|
1648 |
if ( !IS_NULL_id ( cid ) ) {
|
|
|
1649 |
IGNORE using_member ( cid, 1 ) ;
|
|
|
1650 |
}
|
|
|
1651 |
uid = using_member ( uid, 0 ) ;
|
|
|
1652 |
} else {
|
|
|
1653 |
if ( !IS_NULL_id ( cid ) ) {
|
|
|
1654 |
cid = DEREF_id ( id_alias ( cid ) ) ;
|
|
|
1655 |
IGNORE using_name ( cid ) ;
|
|
|
1656 |
}
|
|
|
1657 |
uid = DEREF_id ( id_alias ( uid ) ) ;
|
|
|
1658 |
uid = using_name ( uid ) ;
|
|
|
1659 |
}
|
|
|
1660 |
if ( IS_NULL_id ( uid ) ) {
|
|
|
1661 |
uid = id ;
|
|
|
1662 |
} else {
|
|
|
1663 |
/* Check for hiding */
|
|
|
1664 |
if ( option ( OPT_decl_hide ) ) {
|
|
|
1665 |
switch ( TAG_id ( id ) ) {
|
|
|
1666 |
case id_variable_tag :
|
|
|
1667 |
case id_function_tag : {
|
|
|
1668 |
check_hiding ( uid ) ;
|
|
|
1669 |
break ;
|
|
|
1670 |
}
|
|
|
1671 |
}
|
|
|
1672 |
}
|
|
|
1673 |
}
|
|
|
1674 |
return ( uid ) ;
|
|
|
1675 |
}
|
|
|
1676 |
|
|
|
1677 |
|
|
|
1678 |
/*
|
|
|
1679 |
PROCESS A USING TYPENAME DECLARATION
|
|
|
1680 |
|
|
|
1681 |
This routine processes a using-declaration involving the type t
|
|
|
1682 |
declared using typename.
|
|
|
1683 |
*/
|
|
|
1684 |
|
|
|
1685 |
void using_typename
|
|
|
1686 |
PROTO_N ( ( t ) )
|
|
|
1687 |
PROTO_T ( TYPE t )
|
|
|
1688 |
{
|
|
|
1689 |
UNUSED ( t ) ;
|
|
|
1690 |
return ;
|
|
|
1691 |
}
|
|
|
1692 |
|
|
|
1693 |
|
|
|
1694 |
/*
|
|
|
1695 |
REDECLARE AN IDENTIFIER
|
|
|
1696 |
|
|
|
1697 |
This routine redeclares the identifier id in the namespace ns.
|
|
|
1698 |
*/
|
|
|
1699 |
|
|
|
1700 |
IDENTIFIER redeclare_id
|
|
|
1701 |
PROTO_N ( ( ns, id ) )
|
|
|
1702 |
PROTO_T ( NAMESPACE ns X IDENTIFIER id )
|
|
|
1703 |
{
|
|
|
1704 |
IDENTIFIER old_id ;
|
|
|
1705 |
int cl = is_tagged_type ( id ) ;
|
|
|
1706 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
1707 |
MEMBER mem = search_member ( ns, nm, 1 ) ;
|
|
|
1708 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1709 |
if ( cl ) {
|
|
|
1710 |
old_id = type_member ( mem, 3 ) ;
|
|
|
1711 |
} else {
|
|
|
1712 |
old_id = DEREF_id ( member_id ( mem ) ) ;
|
|
|
1713 |
}
|
|
|
1714 |
if ( !IS_NULL_id ( old_id ) ) {
|
|
|
1715 |
PTR ( LOCATION ) loc = id_loc ( old_id ) ;
|
|
|
1716 |
report ( crt_loc, ERR_basic_odr_decl ( old_id, loc ) ) ;
|
|
|
1717 |
}
|
|
|
1718 |
if ( cl ) {
|
|
|
1719 |
set_type_member ( mem, id ) ;
|
|
|
1720 |
} else {
|
|
|
1721 |
set_member ( mem, id ) ;
|
|
|
1722 |
}
|
|
|
1723 |
ds |= dspec_reserve ;
|
|
|
1724 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
1725 |
COPY_nspace ( id_parent ( id ), ns ) ;
|
|
|
1726 |
return ( id ) ;
|
|
|
1727 |
}
|
|
|
1728 |
|
|
|
1729 |
|
|
|
1730 |
/*
|
|
|
1731 |
CHECK ANONYMOUS UNION MEMBER
|
|
|
1732 |
|
|
|
1733 |
This routine checks whether the identifier id is member of an
|
|
|
1734 |
anonymous union.
|
|
|
1735 |
*/
|
|
|
1736 |
|
|
|
1737 |
int is_anon_member
|
|
|
1738 |
PROTO_N ( ( id ) )
|
|
|
1739 |
PROTO_T ( IDENTIFIER id )
|
|
|
1740 |
{
|
|
|
1741 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1742 |
if ( ds & dspec_reserve ) {
|
|
|
1743 |
IDENTIFIER pid = DEREF_id ( id_alias ( id ) ) ;
|
|
|
1744 |
if ( !EQ_id ( pid, id ) ) {
|
|
|
1745 |
TYPE s = DEREF_type ( id_variable_etc_type ( pid ) ) ;
|
|
|
1746 |
if ( IS_type_compound ( s ) ) {
|
|
|
1747 |
TYPE t = DEREF_type ( id_variable_etc_type ( id ) ) ;
|
|
|
1748 |
if ( !eq_type ( s, t ) ) return ( 1 ) ;
|
|
|
1749 |
}
|
|
|
1750 |
}
|
|
|
1751 |
}
|
|
|
1752 |
return ( 0 ) ;
|
|
|
1753 |
}
|
|
|
1754 |
|
|
|
1755 |
|
|
|
1756 |
/*
|
|
|
1757 |
REDECLARE A MEMBER OF AN ANONYMOUS UNION
|
|
|
1758 |
|
|
|
1759 |
This routine redeclares the member id of an anonymous union. The
|
|
|
1760 |
remaining arguments are as in redecl_anon_union.
|
|
|
1761 |
*/
|
|
|
1762 |
|
|
|
1763 |
static IDENTIFIER redecl_anon_member
|
|
|
1764 |
PROTO_N ( ( id, ct, ds, obj ) )
|
|
|
1765 |
PROTO_T ( IDENTIFIER id X CLASS_TYPE ct X DECL_SPEC ds X IDENTIFIER obj )
|
|
|
1766 |
{
|
|
|
1767 |
IDENTIFIER pid = NULL_id ;
|
|
|
1768 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
1769 |
if ( !IS_hashid_anon ( nm ) ) {
|
|
|
1770 |
switch ( TAG_id ( id ) ) {
|
|
|
1771 |
case id_member_tag : {
|
|
|
1772 |
/* Redeclare a type member */
|
|
|
1773 |
TYPE t = DEREF_type ( id_member_type ( id ) ) ;
|
|
|
1774 |
DEREF_loc ( id_loc ( id ), crt_loc ) ;
|
|
|
1775 |
if ( IS_id_member ( obj ) ) {
|
|
|
1776 |
NAMESPACE cns = crt_namespace ;
|
|
|
1777 |
OFFSET off1 = DEREF_off ( id_member_off ( id ) ) ;
|
|
|
1778 |
OFFSET off2 = DEREF_off ( id_member_off ( obj ) ) ;
|
|
|
1779 |
id = find_id ( nm ) ;
|
|
|
1780 |
id = constr_name ( cns, id ) ;
|
|
|
1781 |
id = make_member_decl ( ds, t, id, 0 ) ;
|
|
|
1782 |
MAKE_off_plus ( off2, off1, off1 ) ;
|
|
|
1783 |
COPY_off ( id_member_off ( id ), off1 ) ;
|
|
|
1784 |
} else {
|
|
|
1785 |
id = make_object_decl ( ds, t, id, 0 ) ;
|
|
|
1786 |
obj = DEREF_id ( id_alias ( obj ) ) ;
|
|
|
1787 |
COPY_id ( id_alias ( id ), obj ) ;
|
|
|
1788 |
}
|
|
|
1789 |
pid = id ;
|
|
|
1790 |
break ;
|
|
|
1791 |
}
|
|
|
1792 |
case id_class_name_tag : {
|
|
|
1793 |
/* Redeclare a class name */
|
|
|
1794 |
int templ = 0 ;
|
|
|
1795 |
CLASS_TYPE cs ;
|
|
|
1796 |
TYPE t = DEREF_type ( id_class_name_defn ( id ) ) ;
|
|
|
1797 |
while ( IS_type_templ ( t ) ) {
|
|
|
1798 |
templ = 1 ;
|
|
|
1799 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
1800 |
}
|
|
|
1801 |
cs = DEREF_ctype ( type_compound_defn ( t ) ) ;
|
|
|
1802 |
if ( !eq_ctype ( ct, cs ) ) {
|
|
|
1803 |
NAMESPACE cns = crt_namespace ;
|
|
|
1804 |
if ( templ ) {
|
|
|
1805 |
/* Shouldn't be a template class */
|
|
|
1806 |
LOCATION loc ;
|
|
|
1807 |
DEREF_loc ( id_loc ( id ), loc ) ;
|
|
|
1808 |
report ( loc, ERR_temp_decl_bad () ) ;
|
|
|
1809 |
}
|
|
|
1810 |
pid = redeclare_id ( cns, id ) ;
|
|
|
1811 |
}
|
|
|
1812 |
break ;
|
|
|
1813 |
}
|
|
|
1814 |
case id_enum_name_tag :
|
|
|
1815 |
case id_class_alias_tag :
|
|
|
1816 |
case id_enum_alias_tag :
|
|
|
1817 |
case id_type_alias_tag :
|
|
|
1818 |
case id_enumerator_tag : {
|
|
|
1819 |
/* Redeclare other identifiers */
|
|
|
1820 |
NAMESPACE cns = crt_namespace ;
|
|
|
1821 |
pid = redeclare_id ( cns, id ) ;
|
|
|
1822 |
break ;
|
|
|
1823 |
}
|
|
|
1824 |
}
|
|
|
1825 |
}
|
|
|
1826 |
return ( pid ) ;
|
|
|
1827 |
}
|
|
|
1828 |
|
|
|
1829 |
|
|
|
1830 |
/*
|
|
|
1831 |
REDECLARE AN ANONYMOUS UNION
|
|
|
1832 |
|
|
|
1833 |
This routine redeclares all the members of the anonymous union obj of
|
|
|
1834 |
type ct in the current namespace using the declaration specifiers ds.
|
|
|
1835 |
The routine returns false if there are no members to redeclare. The
|
|
|
1836 |
redeclared members are added to the extra field of the namespace given
|
|
|
1837 |
by ct.
|
|
|
1838 |
*/
|
|
|
1839 |
|
|
|
1840 |
int redecl_anon_union
|
|
|
1841 |
PROTO_N ( ( ct, ds, obj ) )
|
|
|
1842 |
PROTO_T ( CLASS_TYPE ct X DECL_SPEC ds X IDENTIFIER obj )
|
|
|
1843 |
{
|
|
|
1844 |
int ok = 0 ;
|
|
|
1845 |
MEMBER mem ;
|
|
|
1846 |
NAMESPACE ns ;
|
|
|
1847 |
LOCATION old_loc ;
|
|
|
1848 |
bad_crt_loc++ ;
|
|
|
1849 |
old_loc = crt_loc ;
|
|
|
1850 |
ds |= dspec_reserve ;
|
|
|
1851 |
crt_id_qualifier = qual_none ;
|
|
|
1852 |
crt_templ_qualifier = 0 ;
|
|
|
1853 |
ns = DEREF_nspace ( ctype_member ( ct ) ) ;
|
|
|
1854 |
mem = DEREF_member ( nspace_ctype_first ( ns ) ) ;
|
|
|
1855 |
while ( !IS_NULL_member ( mem ) ) {
|
|
|
1856 |
IDENTIFIER id = DEREF_id ( member_id ( mem ) ) ;
|
|
|
1857 |
IDENTIFIER aid = DEREF_id ( member_alt ( mem ) ) ;
|
|
|
1858 |
if ( !IS_NULL_id ( aid ) && !EQ_id ( aid, id ) ) {
|
|
|
1859 |
aid = redecl_anon_member ( aid, ct, ds, obj ) ;
|
|
|
1860 |
if ( !IS_NULL_id ( aid ) ) ok = 1 ;
|
|
|
1861 |
}
|
|
|
1862 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
1863 |
id = redecl_anon_member ( id, ct, ds, obj ) ;
|
|
|
1864 |
if ( !IS_NULL_id ( id ) ) ok = 1 ;
|
|
|
1865 |
}
|
|
|
1866 |
mem = DEREF_member ( member_next ( mem ) ) ;
|
|
|
1867 |
}
|
|
|
1868 |
crt_loc = old_loc ;
|
|
|
1869 |
bad_crt_loc-- ;
|
|
|
1870 |
return ( ok ) ;
|
|
|
1871 |
}
|