1 | /*
|
---|
2 | * Copyright (c) 2010 Jiri Svoboda
|
---|
3 | * All rights reserved.
|
---|
4 | *
|
---|
5 | * Redistribution and use in source and binary forms, with or without
|
---|
6 | * modification, are permitted provided that the following conditions
|
---|
7 | * are met:
|
---|
8 | *
|
---|
9 | * - Redistributions of source code must retain the above copyright
|
---|
10 | * notice, this list of conditions and the following disclaimer.
|
---|
11 | * - Redistributions in binary form must reproduce the above copyright
|
---|
12 | * notice, this list of conditions and the following disclaimer in the
|
---|
13 | * documentation and/or other materials provided with the distribution.
|
---|
14 | * - The name of the author may not be used to endorse or promote products
|
---|
15 | * derived from this software without specific prior written permission.
|
---|
16 | *
|
---|
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
---|
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
---|
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
---|
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
---|
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
---|
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
---|
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
---|
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
---|
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
---|
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
---|
27 | */
|
---|
28 |
|
---|
29 | /** @file Symbols. */
|
---|
30 |
|
---|
31 | #include <stdlib.h>
|
---|
32 | #include <assert.h>
|
---|
33 | #include "list.h"
|
---|
34 | #include "mytypes.h"
|
---|
35 | #include "strtab.h"
|
---|
36 | #include "stree.h"
|
---|
37 |
|
---|
38 | #include "symbol.h"
|
---|
39 |
|
---|
40 | static stree_symbol_t *symbol_search_global(stree_program_t *prog,
|
---|
41 | stree_ident_t *name);
|
---|
42 | static stree_symbol_t *symbol_find_epoint_rec(stree_program_t *prog,
|
---|
43 | stree_ident_t *name, stree_csi_t *csi);
|
---|
44 | static stree_ident_t *symbol_get_ident(stree_symbol_t *symbol);
|
---|
45 |
|
---|
46 | /** Lookup symbol in CSI using a type expression.
|
---|
47 | *
|
---|
48 | * XXX This should be removed in favor of full type expression evaluation
|
---|
49 | * (run_texpr). This cannot work properly with generics.
|
---|
50 | *
|
---|
51 | * @param prog Program
|
---|
52 | * @param scope CSI used as base for relative references
|
---|
53 | * @param texpr Type expression
|
---|
54 | *
|
---|
55 | * @return Symbol referenced by type expression or @c NULL
|
---|
56 | * if not found
|
---|
57 | */
|
---|
58 | stree_symbol_t *symbol_xlookup_in_csi(stree_program_t *prog,
|
---|
59 | stree_csi_t *scope, stree_texpr_t *texpr)
|
---|
60 | {
|
---|
61 | stree_symbol_t *a, *b;
|
---|
62 | stree_csi_t *a_csi;
|
---|
63 |
|
---|
64 | switch (texpr->tc) {
|
---|
65 | case tc_tnameref:
|
---|
66 | return symbol_lookup_in_csi(prog, scope, texpr->u.tnameref->name);
|
---|
67 | case tc_taccess:
|
---|
68 | a = symbol_xlookup_in_csi(prog, scope, texpr->u.taccess->arg);
|
---|
69 | a_csi = symbol_to_csi(a);
|
---|
70 | if (a_csi == NULL) {
|
---|
71 | printf("Error: Symbol is not CSI.\n");
|
---|
72 | exit(1);
|
---|
73 | }
|
---|
74 | b = symbol_search_csi(prog, a_csi, texpr->u.taccess->member_name);
|
---|
75 | if (b == NULL) {
|
---|
76 | printf("Error: CSI '%s' not found\n", strtab_get_str(texpr->u.taccess->member_name->sid));
|
---|
77 | exit(1);
|
---|
78 | }
|
---|
79 | return b;
|
---|
80 | case tc_tapply:
|
---|
81 | return symbol_xlookup_in_csi(prog, scope,
|
---|
82 | texpr->u.tapply->gtype);
|
---|
83 | default:
|
---|
84 | assert(b_false);
|
---|
85 | }
|
---|
86 | }
|
---|
87 |
|
---|
88 | /** Lookup symbol reference in CSI.
|
---|
89 | *
|
---|
90 | * XXX These functions should take just an sid, not a full identifier.
|
---|
91 | * Sometimes we search for a name which has no associated cspan.
|
---|
92 | *
|
---|
93 | * @param prog Program to look in
|
---|
94 | * @param scope CSI in @a prog which is the base for references
|
---|
95 | * @param name Identifier of the symbol
|
---|
96 | *
|
---|
97 | * @return Symbol or @c NULL if symbol not found
|
---|
98 | */
|
---|
99 | stree_symbol_t *symbol_lookup_in_csi(stree_program_t *prog, stree_csi_t *scope,
|
---|
100 | stree_ident_t *name)
|
---|
101 | {
|
---|
102 | stree_symbol_t *symbol;
|
---|
103 |
|
---|
104 | /* This CSI node should have been processed. */
|
---|
105 | assert(scope == NULL || scope->ancr_state == ws_visited);
|
---|
106 |
|
---|
107 | symbol = NULL;
|
---|
108 | while (scope != NULL && symbol == NULL) {
|
---|
109 | symbol = symbol_search_csi(prog, scope, name);
|
---|
110 | scope = csi_to_symbol(scope)->outer_csi;
|
---|
111 | }
|
---|
112 |
|
---|
113 | if (symbol == NULL)
|
---|
114 | symbol = symbol_search_global(prog, name);
|
---|
115 |
|
---|
116 | return symbol;
|
---|
117 | }
|
---|
118 |
|
---|
119 | /** Look for symbol strictly in CSI.
|
---|
120 | *
|
---|
121 | * Look for symbol in definition of a CSI and its ancestors. (But not
|
---|
122 | * in lexically enclosing CSI.)
|
---|
123 | *
|
---|
124 | * @param prog Program to look in
|
---|
125 | * @param scope CSI in which to look
|
---|
126 | * @param name Identifier of the symbol
|
---|
127 | *
|
---|
128 | * @return Symbol or @c NULL if symbol not found.
|
---|
129 | */
|
---|
130 | stree_symbol_t *symbol_search_csi(stree_program_t *prog,
|
---|
131 | stree_csi_t *scope, stree_ident_t *name)
|
---|
132 | {
|
---|
133 | stree_csi_t *base_csi;
|
---|
134 | stree_symbol_t *symbol;
|
---|
135 |
|
---|
136 | /* Look in new members in this class. */
|
---|
137 | symbol = symbol_search_csi_no_base(prog, scope, name);
|
---|
138 | if (symbol != NULL)
|
---|
139 | return symbol;
|
---|
140 |
|
---|
141 | /* Try inherited members. */
|
---|
142 | base_csi = symbol_get_base_class(prog, scope);
|
---|
143 | if (base_csi != NULL)
|
---|
144 | return symbol_search_csi(prog, base_csi, name);
|
---|
145 |
|
---|
146 | /* No match */
|
---|
147 | return NULL;
|
---|
148 | }
|
---|
149 |
|
---|
150 | /** Look for symbol strictly in CSI.
|
---|
151 | *
|
---|
152 | * Look for symbol in definition of a CSI and its ancestors. (But not
|
---|
153 | * in lexically enclosing CSI or in base CSI.)
|
---|
154 | *
|
---|
155 | * @param prog Program to look in
|
---|
156 | * @param scope CSI in which to look
|
---|
157 | * @param name Identifier of the symbol
|
---|
158 | *
|
---|
159 | * @return Symbol or @c NULL if symbol not found.
|
---|
160 | */
|
---|
161 | stree_symbol_t *symbol_search_csi_no_base(stree_program_t *prog,
|
---|
162 | stree_csi_t *scope, stree_ident_t *name)
|
---|
163 | {
|
---|
164 | list_node_t *node;
|
---|
165 | stree_csimbr_t *csimbr;
|
---|
166 | stree_ident_t *mbr_name;
|
---|
167 |
|
---|
168 | (void) prog;
|
---|
169 |
|
---|
170 | /* Look in new members in this class. */
|
---|
171 |
|
---|
172 | node = list_first(&scope->members);
|
---|
173 | while (node != NULL) {
|
---|
174 | csimbr = list_node_data(node, stree_csimbr_t *);
|
---|
175 | mbr_name = stree_csimbr_get_name(csimbr);
|
---|
176 |
|
---|
177 | if (name->sid == mbr_name->sid) {
|
---|
178 | /* Match */
|
---|
179 | return csimbr_to_symbol(csimbr);
|
---|
180 | }
|
---|
181 |
|
---|
182 | node = list_next(&scope->members, node);
|
---|
183 | }
|
---|
184 | /* No match */
|
---|
185 | return NULL;
|
---|
186 | }
|
---|
187 |
|
---|
188 | /** Look for symbol in global scope.
|
---|
189 | *
|
---|
190 | * @param prog Program to look in
|
---|
191 | * @param name Identifier of the symbol
|
---|
192 | *
|
---|
193 | * @return Symbol or @c NULL if symbol not found.
|
---|
194 | */
|
---|
195 | static stree_symbol_t *symbol_search_global(stree_program_t *prog,
|
---|
196 | stree_ident_t *name)
|
---|
197 | {
|
---|
198 | list_node_t *node;
|
---|
199 | stree_modm_t *modm;
|
---|
200 | stree_symbol_t *symbol;
|
---|
201 | stree_ident_t *mbr_name;
|
---|
202 |
|
---|
203 | node = list_first(&prog->module->members);
|
---|
204 | while (node != NULL) {
|
---|
205 | modm = list_node_data(node, stree_modm_t *);
|
---|
206 |
|
---|
207 | /* Make compiler happy. */
|
---|
208 | mbr_name = NULL;
|
---|
209 |
|
---|
210 | switch (modm->mc) {
|
---|
211 | case mc_csi:
|
---|
212 | mbr_name = modm->u.csi->name;
|
---|
213 | break;
|
---|
214 | case mc_enum:
|
---|
215 | mbr_name = modm->u.enum_d->name;
|
---|
216 | break;
|
---|
217 | }
|
---|
218 |
|
---|
219 | /* The Clang static analyzer is just too picky. */
|
---|
220 | assert(mbr_name != NULL);
|
---|
221 |
|
---|
222 | if (name->sid == mbr_name->sid) {
|
---|
223 | /* Make compiler happy. */
|
---|
224 | symbol = NULL;
|
---|
225 |
|
---|
226 | /* Match */
|
---|
227 | switch (modm->mc) {
|
---|
228 | case mc_csi:
|
---|
229 | symbol = csi_to_symbol(modm->u.csi);
|
---|
230 | break;
|
---|
231 | case mc_enum:
|
---|
232 | symbol = enum_to_symbol(modm->u.enum_d);
|
---|
233 | break;
|
---|
234 | }
|
---|
235 | return symbol;
|
---|
236 | }
|
---|
237 | node = list_next(&prog->module->members, node);
|
---|
238 | }
|
---|
239 |
|
---|
240 | return NULL;
|
---|
241 | }
|
---|
242 |
|
---|
243 | /** Get explicit base class for a CSI.
|
---|
244 | *
|
---|
245 | * Note that if there is no explicit base class (class is derived implicitly
|
---|
246 | * from @c object, then @c NULL is returned.
|
---|
247 | *
|
---|
248 | * @param prog Program to look in
|
---|
249 | * @param csi CSI
|
---|
250 | *
|
---|
251 | * @return Base class (CSI) or @c NULL if no explicit base class.
|
---|
252 | */
|
---|
253 | stree_csi_t *symbol_get_base_class(stree_program_t *prog, stree_csi_t *csi)
|
---|
254 | {
|
---|
255 | list_node_t *pred_n;
|
---|
256 | stree_texpr_t *pred;
|
---|
257 | stree_symbol_t *pred_sym;
|
---|
258 | stree_csi_t *pred_csi;
|
---|
259 | stree_csi_t *outer_csi;
|
---|
260 |
|
---|
261 | outer_csi = csi_to_symbol(csi)->outer_csi;
|
---|
262 |
|
---|
263 | pred_n = list_first(&csi->inherit);
|
---|
264 | if (pred_n == NULL)
|
---|
265 | return NULL;
|
---|
266 |
|
---|
267 | pred = list_node_data(pred_n, stree_texpr_t *);
|
---|
268 | pred_sym = symbol_xlookup_in_csi(prog, outer_csi, pred);
|
---|
269 | pred_csi = symbol_to_csi(pred_sym);
|
---|
270 | assert(pred_csi != NULL); /* XXX! */
|
---|
271 |
|
---|
272 | if (pred_csi->cc == csi_class)
|
---|
273 | return pred_csi;
|
---|
274 |
|
---|
275 | return NULL;
|
---|
276 | }
|
---|
277 |
|
---|
278 | /** Get type expression referencing base class for a CSI.
|
---|
279 | *
|
---|
280 | * Note that if there is no explicit base class (class is derived implicitly
|
---|
281 | * from @c object, then @c NULL is returned.
|
---|
282 | *
|
---|
283 | * @param prog Program to look in
|
---|
284 | * @param csi CSI
|
---|
285 | *
|
---|
286 | * @return Type expression or @c NULL if no explicit base class.
|
---|
287 | */
|
---|
288 | stree_texpr_t *symbol_get_base_class_ref(stree_program_t *prog,
|
---|
289 | stree_csi_t *csi)
|
---|
290 | {
|
---|
291 | list_node_t *pred_n;
|
---|
292 | stree_texpr_t *pred;
|
---|
293 | stree_symbol_t *pred_sym;
|
---|
294 | stree_csi_t *pred_csi;
|
---|
295 | stree_csi_t *outer_csi;
|
---|
296 |
|
---|
297 | outer_csi = csi_to_symbol(csi)->outer_csi;
|
---|
298 |
|
---|
299 | pred_n = list_first(&csi->inherit);
|
---|
300 | if (pred_n == NULL)
|
---|
301 | return NULL;
|
---|
302 |
|
---|
303 | pred = list_node_data(pred_n, stree_texpr_t *);
|
---|
304 | pred_sym = symbol_xlookup_in_csi(prog, outer_csi, pred);
|
---|
305 | pred_csi = symbol_to_csi(pred_sym);
|
---|
306 | assert(pred_csi != NULL); /* XXX! */
|
---|
307 |
|
---|
308 | if (pred_csi->cc == csi_class)
|
---|
309 | return pred;
|
---|
310 |
|
---|
311 | return NULL;
|
---|
312 | }
|
---|
313 |
|
---|
314 | /** Find entry point.
|
---|
315 | *
|
---|
316 | * Perform a walk of all CSIs and look for a function with the name @a name.
|
---|
317 | *
|
---|
318 | * @param prog Program to look in
|
---|
319 | * @param name Name of entry point
|
---|
320 | *
|
---|
321 | * @return Symbol or @c NULL if symbol not found.
|
---|
322 | */
|
---|
323 | stree_symbol_t *symbol_find_epoint(stree_program_t *prog, stree_ident_t *name)
|
---|
324 | {
|
---|
325 | list_node_t *node;
|
---|
326 | stree_modm_t *modm;
|
---|
327 | stree_symbol_t *entry, *etmp;
|
---|
328 |
|
---|
329 | entry = NULL;
|
---|
330 |
|
---|
331 | node = list_first(&prog->module->members);
|
---|
332 | while (node != NULL) {
|
---|
333 | modm = list_node_data(node, stree_modm_t *);
|
---|
334 | if (modm->mc == mc_csi) {
|
---|
335 | etmp = symbol_find_epoint_rec(prog, name, modm->u.csi);
|
---|
336 | if (etmp != NULL) {
|
---|
337 | if (entry != NULL) {
|
---|
338 | printf("Error: Duplicate entry point.\n");
|
---|
339 | exit(1);
|
---|
340 | }
|
---|
341 | entry = etmp;
|
---|
342 | }
|
---|
343 | }
|
---|
344 | node = list_next(&prog->module->members, node);
|
---|
345 | }
|
---|
346 |
|
---|
347 | return entry;
|
---|
348 | }
|
---|
349 |
|
---|
350 | /** Find entry point under CSI.
|
---|
351 | *
|
---|
352 | * Internal part of symbol_find_epoint() that recursively walks CSIs.
|
---|
353 | *
|
---|
354 | * @param prog Program to look in
|
---|
355 | * @param name Name of entry point
|
---|
356 | *
|
---|
357 | * @return Symbol or @c NULL if symbol not found.
|
---|
358 | */
|
---|
359 | static stree_symbol_t *symbol_find_epoint_rec(stree_program_t *prog,
|
---|
360 | stree_ident_t *name, stree_csi_t *csi)
|
---|
361 | {
|
---|
362 | list_node_t *node;
|
---|
363 | stree_csimbr_t *csimbr;
|
---|
364 | stree_symbol_t *entry, *etmp;
|
---|
365 | stree_symbol_t *fun_sym;
|
---|
366 |
|
---|
367 | entry = NULL;
|
---|
368 |
|
---|
369 | node = list_first(&csi->members);
|
---|
370 | while (node != NULL) {
|
---|
371 | csimbr = list_node_data(node, stree_csimbr_t *);
|
---|
372 |
|
---|
373 | switch (csimbr->cc) {
|
---|
374 | case csimbr_csi:
|
---|
375 | etmp = symbol_find_epoint_rec(prog, name, csimbr->u.csi);
|
---|
376 | if (etmp != NULL) {
|
---|
377 | if (entry != NULL) {
|
---|
378 | printf("Error: Duplicate entry point.\n");
|
---|
379 | exit(1);
|
---|
380 | }
|
---|
381 | entry = etmp;
|
---|
382 | }
|
---|
383 | break;
|
---|
384 | case csimbr_fun:
|
---|
385 | fun_sym = fun_to_symbol(csimbr->u.fun);
|
---|
386 |
|
---|
387 | if (csimbr->u.fun->name->sid == name->sid &&
|
---|
388 | stree_symbol_has_attr(fun_sym, sac_static)) {
|
---|
389 | if (entry != NULL) {
|
---|
390 | printf("Error: Duplicate entry point.\n");
|
---|
391 | exit(1);
|
---|
392 | }
|
---|
393 | entry = fun_sym;
|
---|
394 | }
|
---|
395 | default:
|
---|
396 | break;
|
---|
397 | }
|
---|
398 |
|
---|
399 | node = list_next(&csi->members, node);
|
---|
400 | }
|
---|
401 |
|
---|
402 | return entry;
|
---|
403 | }
|
---|
404 |
|
---|
405 | /*
|
---|
406 | * The notion of symbol is designed as a common base class for several
|
---|
407 | * types of declarations with global and CSI scope. Here we simulate
|
---|
408 | * conversion from this base class (symbol) to derived classes (CSI,
|
---|
409 | * fun, ..) and vice versa.
|
---|
410 | */
|
---|
411 |
|
---|
412 | /** Convert symbol to delegate (base to derived).
|
---|
413 | *
|
---|
414 | * @param symbol Symbol
|
---|
415 | * @return Delegate or @c NULL if symbol is not a delegate
|
---|
416 | */
|
---|
417 | stree_deleg_t *symbol_to_deleg(stree_symbol_t *symbol)
|
---|
418 | {
|
---|
419 | if (symbol->sc != sc_deleg)
|
---|
420 | return NULL;
|
---|
421 |
|
---|
422 | return symbol->u.deleg;
|
---|
423 | }
|
---|
424 |
|
---|
425 | /** Convert delegate to symbol (derived to base).
|
---|
426 | *
|
---|
427 | * @param deleg Delegate
|
---|
428 | * @return Symbol
|
---|
429 | */
|
---|
430 | stree_symbol_t *deleg_to_symbol(stree_deleg_t *deleg)
|
---|
431 | {
|
---|
432 | assert(deleg->symbol);
|
---|
433 | return deleg->symbol;
|
---|
434 | }
|
---|
435 |
|
---|
436 | /** Convert symbol to enum (base to derived).
|
---|
437 | *
|
---|
438 | * @param symbol Symbol
|
---|
439 | * @return Enum or @c NULL if symbol is not a enum
|
---|
440 | */
|
---|
441 | stree_enum_t *symbol_to_enum(stree_symbol_t *symbol)
|
---|
442 | {
|
---|
443 | if (symbol->sc != sc_enum)
|
---|
444 | return NULL;
|
---|
445 |
|
---|
446 | return symbol->u.enum_d;
|
---|
447 | }
|
---|
448 |
|
---|
449 | /** Convert enum to symbol (derived to base).
|
---|
450 | *
|
---|
451 | * @param deleg Enum
|
---|
452 | * @return Symbol
|
---|
453 | */
|
---|
454 | stree_symbol_t *enum_to_symbol(stree_enum_t *enum_d)
|
---|
455 | {
|
---|
456 | assert(enum_d->symbol);
|
---|
457 | return enum_d->symbol;
|
---|
458 | }
|
---|
459 |
|
---|
460 | /** Convert symbol to CSI (base to derived).
|
---|
461 | *
|
---|
462 | * @param symbol Symbol
|
---|
463 | * @return CSI or @c NULL if symbol is not a CSI
|
---|
464 | */
|
---|
465 | stree_csi_t *symbol_to_csi(stree_symbol_t *symbol)
|
---|
466 | {
|
---|
467 | if (symbol->sc != sc_csi)
|
---|
468 | return NULL;
|
---|
469 |
|
---|
470 | return symbol->u.csi;
|
---|
471 | }
|
---|
472 |
|
---|
473 | /** Convert CSI to symbol (derived to base).
|
---|
474 | *
|
---|
475 | * @param csi CSI
|
---|
476 | * @return Symbol
|
---|
477 | */
|
---|
478 | stree_symbol_t *csi_to_symbol(stree_csi_t *csi)
|
---|
479 | {
|
---|
480 | assert(csi->symbol);
|
---|
481 | return csi->symbol;
|
---|
482 | }
|
---|
483 |
|
---|
484 | /** Convert symbol to constructor (base to derived).
|
---|
485 | *
|
---|
486 | * @param symbol Symbol
|
---|
487 | * @return Constructor or @c NULL if symbol is not a constructor
|
---|
488 | */
|
---|
489 | stree_ctor_t *symbol_to_ctor(stree_symbol_t *symbol)
|
---|
490 | {
|
---|
491 | if (symbol->sc != sc_ctor)
|
---|
492 | return NULL;
|
---|
493 |
|
---|
494 | return symbol->u.ctor;
|
---|
495 | }
|
---|
496 |
|
---|
497 | /** Convert constructor to symbol (derived to base).
|
---|
498 | *
|
---|
499 | * @param ctor Constructor
|
---|
500 | * @return Symbol
|
---|
501 | */
|
---|
502 | stree_symbol_t *ctor_to_symbol(stree_ctor_t *ctor)
|
---|
503 | {
|
---|
504 | assert(ctor->symbol);
|
---|
505 | return ctor->symbol;
|
---|
506 | }
|
---|
507 |
|
---|
508 | /** Convert symbol to function (base to derived).
|
---|
509 | *
|
---|
510 | * @param symbol Symbol
|
---|
511 | * @return Function or @c NULL if symbol is not a function
|
---|
512 | */
|
---|
513 | stree_fun_t *symbol_to_fun(stree_symbol_t *symbol)
|
---|
514 | {
|
---|
515 | if (symbol->sc != sc_fun)
|
---|
516 | return NULL;
|
---|
517 |
|
---|
518 | return symbol->u.fun;
|
---|
519 | }
|
---|
520 |
|
---|
521 | /** Convert function to symbol (derived to base).
|
---|
522 | *
|
---|
523 | * @param fun Function
|
---|
524 | * @return Symbol
|
---|
525 | */
|
---|
526 | stree_symbol_t *fun_to_symbol(stree_fun_t *fun)
|
---|
527 | {
|
---|
528 | assert(fun->symbol);
|
---|
529 | return fun->symbol;
|
---|
530 | }
|
---|
531 |
|
---|
532 | /** Convert symbol to member variable (base to derived).
|
---|
533 | *
|
---|
534 | * @param symbol Symbol
|
---|
535 | * @return Variable or @c NULL if symbol is not a member variable
|
---|
536 | */
|
---|
537 | stree_var_t *symbol_to_var(stree_symbol_t *symbol)
|
---|
538 | {
|
---|
539 | if (symbol->sc != sc_var)
|
---|
540 | return NULL;
|
---|
541 |
|
---|
542 | return symbol->u.var;
|
---|
543 | }
|
---|
544 |
|
---|
545 | /** Convert variable to symbol (derived to base).
|
---|
546 | *
|
---|
547 | * @param fun Variable
|
---|
548 | * @return Symbol
|
---|
549 | */
|
---|
550 | stree_symbol_t *var_to_symbol(stree_var_t *var)
|
---|
551 | {
|
---|
552 | assert(var->symbol);
|
---|
553 | return var->symbol;
|
---|
554 | }
|
---|
555 |
|
---|
556 | /** Convert symbol to property (base to derived).
|
---|
557 | *
|
---|
558 | * @param symbol Symbol
|
---|
559 | * @return Property or @c NULL if symbol is not a property
|
---|
560 | */
|
---|
561 | stree_prop_t *symbol_to_prop(stree_symbol_t *symbol)
|
---|
562 | {
|
---|
563 | if (symbol->sc != sc_prop)
|
---|
564 | return NULL;
|
---|
565 |
|
---|
566 | return symbol->u.prop;
|
---|
567 | }
|
---|
568 |
|
---|
569 | /** Get symbol from CSI member.
|
---|
570 | *
|
---|
571 | * A symbol corresponds to any CSI member. Return it.
|
---|
572 | *
|
---|
573 | * @param csimbr CSI member
|
---|
574 | * @return Symbol
|
---|
575 | */
|
---|
576 | stree_symbol_t *csimbr_to_symbol(stree_csimbr_t *csimbr)
|
---|
577 | {
|
---|
578 | stree_symbol_t *symbol;
|
---|
579 |
|
---|
580 | /* Keep compiler happy. */
|
---|
581 | symbol = NULL;
|
---|
582 |
|
---|
583 | /* Match */
|
---|
584 | switch (csimbr->cc) {
|
---|
585 | case csimbr_csi:
|
---|
586 | symbol = csi_to_symbol(csimbr->u.csi);
|
---|
587 | break;
|
---|
588 | case csimbr_ctor:
|
---|
589 | symbol = ctor_to_symbol(csimbr->u.ctor);
|
---|
590 | break;
|
---|
591 | case csimbr_deleg:
|
---|
592 | symbol = deleg_to_symbol(csimbr->u.deleg);
|
---|
593 | break;
|
---|
594 | case csimbr_enum:
|
---|
595 | symbol = enum_to_symbol(csimbr->u.enum_d);
|
---|
596 | break;
|
---|
597 | case csimbr_fun:
|
---|
598 | symbol = fun_to_symbol(csimbr->u.fun);
|
---|
599 | break;
|
---|
600 | case csimbr_var:
|
---|
601 | symbol = var_to_symbol(csimbr->u.var);
|
---|
602 | break;
|
---|
603 | case csimbr_prop:
|
---|
604 | symbol = prop_to_symbol(csimbr->u.prop);
|
---|
605 | break;
|
---|
606 | }
|
---|
607 |
|
---|
608 | return symbol;
|
---|
609 | }
|
---|
610 |
|
---|
611 | /** Convert property to symbol (derived to base).
|
---|
612 | *
|
---|
613 | * @param fun Property
|
---|
614 | * @return Symbol
|
---|
615 | */
|
---|
616 | stree_symbol_t *prop_to_symbol(stree_prop_t *prop)
|
---|
617 | {
|
---|
618 | assert(prop->symbol);
|
---|
619 | return prop->symbol;
|
---|
620 | }
|
---|
621 |
|
---|
622 | /** Print fully qualified name of symbol.
|
---|
623 | *
|
---|
624 | * @param symbol Symbol
|
---|
625 | */
|
---|
626 | void symbol_print_fqn(stree_symbol_t *symbol)
|
---|
627 | {
|
---|
628 | stree_ident_t *name;
|
---|
629 | stree_symbol_t *outer_sym;
|
---|
630 |
|
---|
631 | if (symbol->outer_csi != NULL) {
|
---|
632 | outer_sym = csi_to_symbol(symbol->outer_csi);
|
---|
633 | symbol_print_fqn(outer_sym);
|
---|
634 | printf(".");
|
---|
635 | }
|
---|
636 |
|
---|
637 | name = symbol_get_ident(symbol);
|
---|
638 | printf("%s", strtab_get_str(name->sid));
|
---|
639 | }
|
---|
640 |
|
---|
641 | /** Return symbol identifier.
|
---|
642 | *
|
---|
643 | * @param symbol Symbol
|
---|
644 | * @return Symbol identifier
|
---|
645 | */
|
---|
646 | static stree_ident_t *symbol_get_ident(stree_symbol_t *symbol)
|
---|
647 | {
|
---|
648 | stree_ident_t *ident;
|
---|
649 |
|
---|
650 | /* Make compiler happy. */
|
---|
651 | ident = NULL;
|
---|
652 |
|
---|
653 | switch (symbol->sc) {
|
---|
654 | case sc_csi:
|
---|
655 | ident = symbol->u.csi->name;
|
---|
656 | break;
|
---|
657 | case sc_ctor:
|
---|
658 | ident = symbol->u.ctor->name;
|
---|
659 | break;
|
---|
660 | case sc_deleg:
|
---|
661 | ident = symbol->u.deleg->name;
|
---|
662 | break;
|
---|
663 | case sc_enum:
|
---|
664 | ident = symbol->u.enum_d->name;
|
---|
665 | break;
|
---|
666 | case sc_fun:
|
---|
667 | ident = symbol->u.fun->name;
|
---|
668 | break;
|
---|
669 | case sc_var:
|
---|
670 | ident = symbol->u.var->name;
|
---|
671 | break;
|
---|
672 | case sc_prop:
|
---|
673 | ident = symbol->u.prop->name;
|
---|
674 | break;
|
---|
675 | }
|
---|
676 |
|
---|
677 | return ident;
|
---|
678 | }
|
---|