Commit | Line | Data |
ff2452de |
1 | /* $Header: cmd.c,v 3.0.1.6 90/03/12 16:21:09 lwall Locked $ |
a687059c |
2 | * |
3 | * Copyright (c) 1989, Larry Wall |
4 | * |
5 | * You may distribute under the terms of the GNU General Public License |
6 | * as specified in the README file that comes with the perl 3.0 kit. |
8d063cd8 |
7 | * |
8 | * $Log: cmd.c,v $ |
ff2452de |
9 | * Revision 3.0.1.6 90/03/12 16:21:09 lwall |
10 | * patch13: fixed some backwards VOLATILE declarations |
11 | * patch13: while (s/x//) {} still caused some anomolies |
12 | * patch13: greater-than test of numeric switch structures did less-than action |
13 | * |
afd9f252 |
14 | * Revision 3.0.1.5 90/02/28 16:38:31 lwall |
15 | * patch9: volatilized some more variables for super-optimizing compilers |
16 | * patch9: nested foreach loops didn't reset inner loop on next to outer loop |
17 | * patch9: returned values were read from obsolete stack |
18 | * patch9: added sanity check on longjmp() return value |
19 | * patch9: substitutions that almost always succeed can corrupt label stack |
20 | * patch9: subs which return by both mechanisms can clobber local return data |
21 | * |
d8f2e4cc |
22 | * Revision 3.0.1.4 89/12/21 19:17:41 lwall |
23 | * patch7: arranged for certain registers to be restored after longjmp() |
24 | * patch7: made nested or recursive foreach work right |
25 | * |
0d3e774c |
26 | * Revision 3.0.1.3 89/11/17 15:04:36 lwall |
27 | * patch5: nested foreach on same array didn't work |
28 | * |
bf38876a |
29 | * Revision 3.0.1.2 89/11/11 04:08:56 lwall |
30 | * patch2: non-BSD machines required two ^D's for <> |
31 | * patch2: grow_dlevel() not inside #ifdef DEBUGGING |
32 | * |
03a14243 |
33 | * Revision 3.0.1.1 89/10/26 23:04:21 lwall |
34 | * patch1: heuristically disabled optimization could cause core dump |
35 | * |
a687059c |
36 | * Revision 3.0 89/10/18 15:09:02 lwall |
37 | * 3.0 baseline |
8d063cd8 |
38 | * |
39 | */ |
40 | |
8d063cd8 |
41 | #include "EXTERN.h" |
8d063cd8 |
42 | #include "perl.h" |
43 | |
a687059c |
44 | #ifdef I_VARARGS |
45 | # include <varargs.h> |
46 | #endif |
47 | |
8d063cd8 |
48 | static STR str_chop; |
49 | |
a687059c |
50 | void grow_dlevel(); |
51 | |
d8f2e4cc |
52 | /* do longjmps() clobber register variables? */ |
53 | |
54 | #if defined(cray) || defined(__STDC__) |
55 | #define JMPCLOBBER |
56 | #endif |
57 | |
8d063cd8 |
58 | /* This is the main command loop. We try to spend as much time in this loop |
59 | * as possible, so lots of optimizations do their activities in here. This |
60 | * means things get a little sloppy. |
61 | */ |
62 | |
a687059c |
63 | int |
d8f2e4cc |
64 | cmd_exec(cmdparm,gimme,sp) |
65 | CMD *VOLATILE cmdparm; |
afd9f252 |
66 | VOLATILE int gimme; |
67 | VOLATILE int sp; |
8d063cd8 |
68 | { |
d8f2e4cc |
69 | register CMD *cmd = cmdparm; |
70 | SPAT *VOLATILE oldspat; |
afd9f252 |
71 | VOLATILE int firstsave = savestack->ary_fill; |
d8f2e4cc |
72 | VOLATILE int oldsave; |
73 | VOLATILE int aryoptsave; |
8d063cd8 |
74 | #ifdef DEBUGGING |
d8f2e4cc |
75 | VOLATILE int olddlevel; |
76 | VOLATILE int entdlevel; |
8d063cd8 |
77 | #endif |
a687059c |
78 | register STR *retstr = &str_undef; |
8d063cd8 |
79 | register char *tmps; |
80 | register int cmdflags; |
378cc40b |
81 | register int match; |
8d063cd8 |
82 | register char *go_to = goto_targ; |
a687059c |
83 | register int newsp = -2; |
84 | register STR **st = stack->ary_array; |
ff2452de |
85 | FILE *VOLATILE fp; |
86 | ARRAY *VOLATILE ar; |
8d063cd8 |
87 | |
a687059c |
88 | lastsize = 0; |
8d063cd8 |
89 | #ifdef DEBUGGING |
90 | entdlevel = dlevel; |
91 | #endif |
92 | tail_recursion_entry: |
93 | #ifdef DEBUGGING |
94 | dlevel = entdlevel; |
95 | #endif |
a687059c |
96 | #ifdef TAINT |
97 | tainted = 0; /* Each statement is presumed innocent */ |
98 | #endif |
99 | if (cmd == Nullcmd) { |
100 | if (gimme == G_ARRAY && newsp > -2) |
101 | return newsp; |
102 | else { |
103 | st[++sp] = retstr; |
104 | return sp; |
105 | } |
106 | } |
8d063cd8 |
107 | cmdflags = cmd->c_flags; /* hopefully load register */ |
108 | if (go_to) { |
109 | if (cmd->c_label && strEQ(go_to,cmd->c_label)) |
110 | goto_targ = go_to = Nullch; /* here at last */ |
111 | else { |
112 | switch (cmd->c_type) { |
113 | case C_IF: |
114 | oldspat = curspat; |
378cc40b |
115 | oldsave = savestack->ary_fill; |
8d063cd8 |
116 | #ifdef DEBUGGING |
117 | olddlevel = dlevel; |
118 | #endif |
119 | retstr = &str_yes; |
a687059c |
120 | newsp = -2; |
8d063cd8 |
121 | if (cmd->ucmd.ccmd.cc_true) { |
122 | #ifdef DEBUGGING |
378cc40b |
123 | if (debug) { |
124 | debname[dlevel] = 't'; |
a687059c |
125 | debdelim[dlevel] = '_'; |
126 | if (++dlevel >= dlmax) |
127 | grow_dlevel(); |
378cc40b |
128 | } |
8d063cd8 |
129 | #endif |
a687059c |
130 | newsp = cmd_exec(cmd->ucmd.ccmd.cc_true,gimme,sp); |
131 | st = stack->ary_array; /* possibly reallocated */ |
132 | retstr = st[newsp]; |
8d063cd8 |
133 | } |
a687059c |
134 | if (!goto_targ) |
8d063cd8 |
135 | go_to = Nullch; |
a687059c |
136 | curspat = oldspat; |
137 | if (savestack->ary_fill > oldsave) |
138 | restorelist(oldsave); |
8d063cd8 |
139 | #ifdef DEBUGGING |
a687059c |
140 | dlevel = olddlevel; |
8d063cd8 |
141 | #endif |
a687059c |
142 | cmd = cmd->ucmd.ccmd.cc_alt; |
143 | goto tail_recursion_entry; |
144 | case C_ELSE: |
145 | oldspat = curspat; |
146 | oldsave = savestack->ary_fill; |
147 | #ifdef DEBUGGING |
148 | olddlevel = dlevel; |
149 | #endif |
150 | retstr = &str_undef; |
151 | newsp = -2; |
152 | if (cmd->ucmd.ccmd.cc_true) { |
153 | #ifdef DEBUGGING |
154 | if (debug) { |
155 | debname[dlevel] = 'e'; |
156 | debdelim[dlevel] = '_'; |
157 | if (++dlevel >= dlmax) |
158 | grow_dlevel(); |
8d063cd8 |
159 | } |
a687059c |
160 | #endif |
161 | newsp = cmd_exec(cmd->ucmd.ccmd.cc_true,gimme,sp); |
162 | st = stack->ary_array; /* possibly reallocated */ |
163 | retstr = st[newsp]; |
8d063cd8 |
164 | } |
165 | if (!goto_targ) |
166 | go_to = Nullch; |
167 | curspat = oldspat; |
378cc40b |
168 | if (savestack->ary_fill > oldsave) |
169 | restorelist(oldsave); |
8d063cd8 |
170 | #ifdef DEBUGGING |
171 | dlevel = olddlevel; |
172 | #endif |
173 | break; |
174 | case C_BLOCK: |
175 | case C_WHILE: |
176 | if (!(cmdflags & CF_ONCE)) { |
177 | cmdflags |= CF_ONCE; |
a687059c |
178 | if (++loop_ptr >= loop_max) { |
179 | loop_max += 128; |
180 | Renew(loop_stack, loop_max, struct loop); |
181 | } |
8d063cd8 |
182 | loop_stack[loop_ptr].loop_label = cmd->c_label; |
a687059c |
183 | loop_stack[loop_ptr].loop_sp = sp; |
8d063cd8 |
184 | #ifdef DEBUGGING |
185 | if (debug & 4) { |
186 | deb("(Pushing label #%d %s)\n", |
a687059c |
187 | loop_ptr, cmd->c_label ? cmd->c_label : ""); |
8d063cd8 |
188 | } |
189 | #endif |
190 | } |
d8f2e4cc |
191 | #ifdef JMPCLOBBER |
192 | cmdparm = cmd; |
193 | #endif |
194 | if (match = setjmp(loop_stack[loop_ptr].loop_env)) { |
a687059c |
195 | st = stack->ary_array; /* possibly reallocated */ |
afd9f252 |
196 | #ifdef JMPCLOBBER |
d8f2e4cc |
197 | cmd = cmdparm; |
198 | cmdflags = cmd->c_flags|CF_ONCE; |
199 | #endif |
afd9f252 |
200 | if (savestack->ary_fill > oldsave) |
201 | restorelist(oldsave); |
d8f2e4cc |
202 | switch (match) { |
afd9f252 |
203 | default: |
204 | fatal("longjmp returned bad value (%d)",match); |
d8f2e4cc |
205 | case O_LAST: /* not done unless go_to found */ |
206 | go_to = Nullch; |
207 | if (lastretstr) { |
208 | retstr = lastretstr; |
209 | newsp = -2; |
210 | } |
211 | else { |
212 | newsp = sp + lastsize; |
213 | retstr = st[newsp]; |
214 | } |
8d063cd8 |
215 | #ifdef DEBUGGING |
d8f2e4cc |
216 | olddlevel = dlevel; |
8d063cd8 |
217 | #endif |
d8f2e4cc |
218 | curspat = oldspat; |
d8f2e4cc |
219 | goto next_cmd; |
220 | case O_NEXT: /* not done unless go_to found */ |
221 | go_to = Nullch; |
222 | #ifdef JMPCLOBBER |
223 | newsp = -2; |
224 | retstr = &str_undef; |
225 | #endif |
226 | goto next_iter; |
227 | case O_REDO: /* not done unless go_to found */ |
228 | go_to = Nullch; |
229 | #ifdef JMPCLOBBER |
230 | newsp = -2; |
231 | retstr = &str_undef; |
232 | #endif |
233 | goto doit; |
234 | } |
8d063cd8 |
235 | } |
236 | oldspat = curspat; |
378cc40b |
237 | oldsave = savestack->ary_fill; |
8d063cd8 |
238 | #ifdef DEBUGGING |
239 | olddlevel = dlevel; |
240 | #endif |
241 | if (cmd->ucmd.ccmd.cc_true) { |
242 | #ifdef DEBUGGING |
378cc40b |
243 | if (debug) { |
244 | debname[dlevel] = 't'; |
a687059c |
245 | debdelim[dlevel] = '_'; |
246 | if (++dlevel >= dlmax) |
247 | grow_dlevel(); |
378cc40b |
248 | } |
8d063cd8 |
249 | #endif |
a687059c |
250 | newsp = cmd_exec(cmd->ucmd.ccmd.cc_true,gimme,sp); |
251 | st = stack->ary_array; /* possibly reallocated */ |
252 | retstr = st[newsp]; |
8d063cd8 |
253 | } |
254 | if (!goto_targ) { |
255 | go_to = Nullch; |
256 | goto next_iter; |
257 | } |
258 | #ifdef DEBUGGING |
259 | dlevel = olddlevel; |
260 | #endif |
261 | if (cmd->ucmd.ccmd.cc_alt) { |
262 | #ifdef DEBUGGING |
378cc40b |
263 | if (debug) { |
264 | debname[dlevel] = 'a'; |
a687059c |
265 | debdelim[dlevel] = '_'; |
266 | if (++dlevel >= dlmax) |
267 | grow_dlevel(); |
378cc40b |
268 | } |
8d063cd8 |
269 | #endif |
a687059c |
270 | newsp = cmd_exec(cmd->ucmd.ccmd.cc_alt,gimme,sp); |
271 | st = stack->ary_array; /* possibly reallocated */ |
272 | retstr = st[newsp]; |
8d063cd8 |
273 | } |
274 | if (goto_targ) |
275 | break; |
276 | go_to = Nullch; |
277 | goto finish_while; |
278 | } |
279 | cmd = cmd->c_next; |
378cc40b |
280 | if (cmd && cmd->c_head == cmd) |
281 | /* reached end of while loop */ |
a687059c |
282 | return sp; /* targ isn't in this block */ |
378cc40b |
283 | if (cmdflags & CF_ONCE) { |
284 | #ifdef DEBUGGING |
285 | if (debug & 4) { |
a687059c |
286 | tmps = loop_stack[loop_ptr].loop_label; |
378cc40b |
287 | deb("(Popping label #%d %s)\n",loop_ptr, |
a687059c |
288 | tmps ? tmps : "" ); |
378cc40b |
289 | } |
290 | #endif |
291 | loop_ptr--; |
292 | } |
8d063cd8 |
293 | goto tail_recursion_entry; |
294 | } |
295 | } |
296 | |
297 | until_loop: |
298 | |
378cc40b |
299 | /* Set line number so run-time errors can be located */ |
300 | |
301 | line = cmd->c_line; |
302 | |
8d063cd8 |
303 | #ifdef DEBUGGING |
378cc40b |
304 | if (debug) { |
305 | if (debug & 2) { |
306 | deb("%s (%lx) r%lx t%lx a%lx n%lx cs%lx\n", |
307 | cmdname[cmd->c_type],cmd,cmd->c_expr, |
308 | cmd->ucmd.ccmd.cc_true,cmd->ucmd.ccmd.cc_alt,cmd->c_next, |
309 | curspat); |
310 | } |
311 | debname[dlevel] = cmdname[cmd->c_type][0]; |
a687059c |
312 | debdelim[dlevel] = '!'; |
313 | if (++dlevel >= dlmax) |
314 | grow_dlevel(); |
8d063cd8 |
315 | } |
8d063cd8 |
316 | #endif |
8d063cd8 |
317 | |
318 | /* Here is some common optimization */ |
319 | |
320 | if (cmdflags & CF_COND) { |
321 | switch (cmdflags & CF_OPTIMIZE) { |
322 | |
323 | case CFT_FALSE: |
378cc40b |
324 | retstr = cmd->c_short; |
a687059c |
325 | newsp = -2; |
8d063cd8 |
326 | match = FALSE; |
327 | if (cmdflags & CF_NESURE) |
328 | goto maybe; |
329 | break; |
330 | case CFT_TRUE: |
378cc40b |
331 | retstr = cmd->c_short; |
a687059c |
332 | newsp = -2; |
8d063cd8 |
333 | match = TRUE; |
334 | if (cmdflags & CF_EQSURE) |
335 | goto flipmaybe; |
336 | break; |
337 | |
338 | case CFT_REG: |
339 | retstr = STAB_STR(cmd->c_stab); |
a687059c |
340 | newsp = -2; |
8d063cd8 |
341 | match = str_true(retstr); /* => retstr = retstr, c2 should fix */ |
342 | if (cmdflags & (match ? CF_EQSURE : CF_NESURE)) |
343 | goto flipmaybe; |
344 | break; |
345 | |
346 | case CFT_ANCHOR: /* /^pat/ optimization */ |
347 | if (multiline) { |
378cc40b |
348 | if (*cmd->c_short->str_ptr && !(cmdflags & CF_EQSURE)) |
8d063cd8 |
349 | goto scanner; /* just unanchor it */ |
350 | else |
351 | break; /* must evaluate */ |
352 | } |
353 | /* FALL THROUGH */ |
354 | case CFT_STROP: /* string op optimization */ |
355 | retstr = STAB_STR(cmd->c_stab); |
a687059c |
356 | newsp = -2; |
357 | #ifndef I286 |
378cc40b |
358 | if (*cmd->c_short->str_ptr == *str_get(retstr) && |
a687059c |
359 | bcmp(cmd->c_short->str_ptr, str_get(retstr), |
360 | cmd->c_slen) == 0 ) { |
8d063cd8 |
361 | if (cmdflags & CF_EQSURE) { |
a687059c |
362 | if (sawampersand && (cmdflags & CF_OPTIMIZE) != CFT_STROP) { |
363 | curspat = Nullspat; |
364 | if (leftstab) |
365 | str_nset(stab_val(leftstab),"",0); |
366 | if (amperstab) |
367 | str_sset(stab_val(amperstab),cmd->c_short); |
368 | if (rightstab) |
369 | str_nset(stab_val(rightstab), |
370 | retstr->str_ptr + cmd->c_slen, |
371 | retstr->str_cur - cmd->c_slen); |
372 | } |
8d063cd8 |
373 | match = !(cmdflags & CF_FIRSTNEG); |
374 | retstr = &str_yes; |
375 | goto flipmaybe; |
376 | } |
377 | } |
378 | else if (cmdflags & CF_NESURE) { |
379 | match = cmdflags & CF_FIRSTNEG; |
380 | retstr = &str_no; |
381 | goto flipmaybe; |
382 | } |
a687059c |
383 | #else |
384 | { |
385 | char *zap1, *zap2, zap1c, zap2c; |
386 | int zaplen; |
387 | |
388 | zap1 = cmd->c_short->str_ptr; |
389 | zap2 = str_get(retstr); |
390 | zap1c = *zap1; |
391 | zap2c = *zap2; |
392 | zaplen = cmd->c_slen; |
393 | if ((zap1c == zap2c) && (bcmp(zap1, zap2, zaplen) == 0)) { |
394 | if (cmdflags & CF_EQSURE) { |
395 | if (sawampersand && |
396 | (cmdflags & CF_OPTIMIZE) != CFT_STROP) { |
397 | curspat = Nullspat; |
398 | if (leftstab) |
399 | str_nset(stab_val(leftstab),"",0); |
400 | if (amperstab) |
401 | str_sset(stab_val(amperstab),cmd->c_short); |
402 | if (rightstab) |
403 | str_nset(stab_val(rightstab), |
404 | retstr->str_ptr + cmd->c_slen, |
405 | retstr->str_cur - cmd->c_slen); |
406 | } |
407 | match = !(cmdflags & CF_FIRSTNEG); |
408 | retstr = &str_yes; |
409 | goto flipmaybe; |
410 | } |
411 | } |
412 | else if (cmdflags & CF_NESURE) { |
413 | match = cmdflags & CF_FIRSTNEG; |
414 | retstr = &str_no; |
415 | goto flipmaybe; |
416 | } |
417 | } |
418 | #endif |
8d063cd8 |
419 | break; /* must evaluate */ |
420 | |
421 | case CFT_SCAN: /* non-anchored search */ |
422 | scanner: |
423 | retstr = STAB_STR(cmd->c_stab); |
a687059c |
424 | newsp = -2; |
425 | if (retstr->str_pok & SP_STUDIED) |
378cc40b |
426 | if (screamfirst[cmd->c_short->str_rare] >= 0) |
427 | tmps = screaminstr(retstr, cmd->c_short); |
428 | else |
429 | tmps = Nullch; |
430 | else { |
431 | tmps = str_get(retstr); /* make sure it's pok */ |
a687059c |
432 | #ifndef lint |
433 | tmps = fbminstr((unsigned char*)tmps, |
434 | (unsigned char*)tmps + retstr->str_cur, cmd->c_short); |
435 | #endif |
378cc40b |
436 | } |
437 | if (tmps) { |
8d063cd8 |
438 | if (cmdflags & CF_EQSURE) { |
a687059c |
439 | ++cmd->c_short->str_u.str_useful; |
440 | if (sawampersand) { |
441 | curspat = Nullspat; |
442 | if (leftstab) |
443 | str_nset(stab_val(leftstab),retstr->str_ptr, |
444 | tmps - retstr->str_ptr); |
445 | if (amperstab) |
446 | str_sset(stab_val(amperstab),cmd->c_short); |
447 | if (rightstab) |
448 | str_nset(stab_val(rightstab), |
449 | tmps + cmd->c_short->str_cur, |
450 | retstr->str_cur - (tmps - retstr->str_ptr) - |
451 | cmd->c_short->str_cur); |
452 | } |
8d063cd8 |
453 | match = !(cmdflags & CF_FIRSTNEG); |
454 | retstr = &str_yes; |
455 | goto flipmaybe; |
456 | } |
378cc40b |
457 | else |
458 | hint = tmps; |
459 | } |
460 | else { |
461 | if (cmdflags & CF_NESURE) { |
a687059c |
462 | ++cmd->c_short->str_u.str_useful; |
378cc40b |
463 | match = cmdflags & CF_FIRSTNEG; |
464 | retstr = &str_no; |
465 | goto flipmaybe; |
466 | } |
467 | } |
a687059c |
468 | if (--cmd->c_short->str_u.str_useful < 0) { |
ff2452de |
469 | cmdflags &= ~CF_OPTIMIZE; |
378cc40b |
470 | cmdflags |= CFT_EVAL; /* never try this optimization again */ |
ff2452de |
471 | cmd->c_flags = (cmdflags & ~CF_ONCE); |
378cc40b |
472 | } |
473 | break; /* must evaluate */ |
474 | |
475 | case CFT_NUMOP: /* numeric op optimization */ |
476 | retstr = STAB_STR(cmd->c_stab); |
a687059c |
477 | newsp = -2; |
378cc40b |
478 | switch (cmd->c_slen) { |
479 | case O_EQ: |
a687059c |
480 | if (dowarn) { |
481 | if ((!retstr->str_nok && !looks_like_number(retstr))) |
482 | warn("Possible use of == on string value"); |
483 | } |
484 | match = (str_gnum(retstr) == cmd->c_short->str_u.str_nval); |
378cc40b |
485 | break; |
486 | case O_NE: |
a687059c |
487 | match = (str_gnum(retstr) != cmd->c_short->str_u.str_nval); |
378cc40b |
488 | break; |
489 | case O_LT: |
a687059c |
490 | match = (str_gnum(retstr) < cmd->c_short->str_u.str_nval); |
378cc40b |
491 | break; |
492 | case O_LE: |
a687059c |
493 | match = (str_gnum(retstr) <= cmd->c_short->str_u.str_nval); |
378cc40b |
494 | break; |
495 | case O_GT: |
a687059c |
496 | match = (str_gnum(retstr) > cmd->c_short->str_u.str_nval); |
378cc40b |
497 | break; |
498 | case O_GE: |
a687059c |
499 | match = (str_gnum(retstr) >= cmd->c_short->str_u.str_nval); |
378cc40b |
500 | break; |
501 | } |
502 | if (match) { |
503 | if (cmdflags & CF_EQSURE) { |
504 | retstr = &str_yes; |
505 | goto flipmaybe; |
506 | } |
8d063cd8 |
507 | } |
508 | else if (cmdflags & CF_NESURE) { |
8d063cd8 |
509 | retstr = &str_no; |
510 | goto flipmaybe; |
511 | } |
512 | break; /* must evaluate */ |
513 | |
378cc40b |
514 | case CFT_INDGETS: /* while (<$foo>) */ |
515 | last_in_stab = stabent(str_get(STAB_STR(cmd->c_stab)),TRUE); |
a687059c |
516 | if (!stab_io(last_in_stab)) |
517 | stab_io(last_in_stab) = stio_new(); |
378cc40b |
518 | goto dogets; |
8d063cd8 |
519 | case CFT_GETS: /* really a while (<file>) */ |
520 | last_in_stab = cmd->c_stab; |
378cc40b |
521 | dogets: |
a687059c |
522 | fp = stab_io(last_in_stab)->ifp; |
523 | retstr = stab_val(defstab); |
524 | newsp = -2; |
bf38876a |
525 | keepgoing: |
a687059c |
526 | if (fp && str_gets(retstr, fp, 0)) { |
527 | if (*retstr->str_ptr == '0' && retstr->str_cur == 1) |
378cc40b |
528 | match = FALSE; |
529 | else |
530 | match = TRUE; |
a687059c |
531 | stab_io(last_in_stab)->lines++; |
8d063cd8 |
532 | } |
bf38876a |
533 | else if (stab_io(last_in_stab)->flags & IOF_ARGV) { |
534 | if (!fp) |
535 | goto doeval; /* first time through */ |
536 | fp = nextargv(last_in_stab); |
537 | if (fp) |
538 | goto keepgoing; |
539 | (void)do_close(last_in_stab,FALSE); |
540 | stab_io(last_in_stab)->flags |= IOF_START; |
541 | retstr = &str_undef; |
542 | match = FALSE; |
543 | } |
8d063cd8 |
544 | else { |
a687059c |
545 | retstr = &str_undef; |
8d063cd8 |
546 | match = FALSE; |
547 | } |
548 | goto flipmaybe; |
549 | case CFT_EVAL: |
550 | break; |
551 | case CFT_UNFLIP: |
a687059c |
552 | while (tmps_max > tmps_base) /* clean up after last eval */ |
553 | str_free(tmps_list[tmps_max--]); |
554 | newsp = eval(cmd->c_expr,gimme && (cmdflags & CF_TERM),sp); |
555 | st = stack->ary_array; /* possibly reallocated */ |
556 | retstr = st[newsp]; |
8d063cd8 |
557 | match = str_true(retstr); |
558 | if (cmd->c_expr->arg_type == O_FLIP) /* undid itself? */ |
559 | cmdflags = copyopt(cmd,cmd->c_expr[3].arg_ptr.arg_cmd); |
560 | goto maybe; |
561 | case CFT_CHOP: |
a687059c |
562 | retstr = stab_val(cmd->c_stab); |
563 | newsp = -2; |
8d063cd8 |
564 | match = (retstr->str_cur != 0); |
565 | tmps = str_get(retstr); |
566 | tmps += retstr->str_cur - match; |
a687059c |
567 | str_nset(&str_chop,tmps,match); |
8d063cd8 |
568 | *tmps = '\0'; |
569 | retstr->str_nok = 0; |
570 | retstr->str_cur = tmps - retstr->str_ptr; |
571 | retstr = &str_chop; |
572 | goto flipmaybe; |
378cc40b |
573 | case CFT_ARRAY: |
0d3e774c |
574 | match = cmd->c_short->str_u.str_useful; /* just to get register */ |
378cc40b |
575 | |
a687059c |
576 | if (match < 0) { /* first time through here? */ |
0d3e774c |
577 | ar = stab_array(cmd->c_expr[1].arg_ptr.arg_stab); |
a687059c |
578 | aryoptsave = savestack->ary_fill; |
579 | savesptr(&stab_val(cmd->c_stab)); |
0d3e774c |
580 | savelong(&cmd->c_short->str_u.str_useful); |
a687059c |
581 | } |
afd9f252 |
582 | else { |
0d3e774c |
583 | ar = stab_xarray(cmd->c_expr[1].arg_ptr.arg_stab); |
afd9f252 |
584 | if (cmd->c_type != C_WHILE && savestack->ary_fill > firstsave) |
585 | restorelist(firstsave); |
586 | } |
378cc40b |
587 | |
a687059c |
588 | if (match >= ar->ary_fill) { /* we're in LAST, probably */ |
589 | retstr = &str_undef; |
0d3e774c |
590 | cmd->c_short->str_u.str_useful = -1; /* actually redundant */ |
378cc40b |
591 | match = FALSE; |
592 | } |
593 | else { |
594 | match++; |
a687059c |
595 | retstr = stab_val(cmd->c_stab) = ar->ary_array[match]; |
0d3e774c |
596 | cmd->c_short->str_u.str_useful = match; |
378cc40b |
597 | match = TRUE; |
598 | } |
a687059c |
599 | newsp = -2; |
378cc40b |
600 | goto maybe; |
8d063cd8 |
601 | } |
602 | |
603 | /* we have tried to make this normal case as abnormal as possible */ |
604 | |
605 | doeval: |
a687059c |
606 | if (gimme == G_ARRAY) { |
607 | lastretstr = Nullstr; |
608 | lastspbase = sp; |
609 | lastsize = newsp - sp; |
610 | } |
611 | else |
612 | lastretstr = retstr; |
613 | while (tmps_max > tmps_base) /* clean up after last eval */ |
614 | str_free(tmps_list[tmps_max--]); |
615 | newsp = eval(cmd->c_expr,gimme && (cmdflags & CF_TERM),sp); |
616 | st = stack->ary_array; /* possibly reallocated */ |
617 | retstr = st[newsp]; |
d8f2e4cc |
618 | if (newsp > sp && retstr) |
a687059c |
619 | match = str_true(retstr); |
620 | else |
621 | match = FALSE; |
8d063cd8 |
622 | goto maybe; |
623 | |
624 | /* if flipflop was true, flop it */ |
625 | |
626 | flipmaybe: |
627 | if (match && cmdflags & CF_FLIP) { |
a687059c |
628 | while (tmps_max > tmps_base) /* clean up after last eval */ |
629 | str_free(tmps_list[tmps_max--]); |
8d063cd8 |
630 | if (cmd->c_expr->arg_type == O_FLOP) { /* currently toggled? */ |
a687059c |
631 | newsp = eval(cmd->c_expr,G_SCALAR,sp);/*let eval undo it*/ |
8d063cd8 |
632 | cmdflags = copyopt(cmd,cmd->c_expr[3].arg_ptr.arg_cmd); |
633 | } |
634 | else { |
a687059c |
635 | newsp = eval(cmd->c_expr,G_SCALAR,sp);/* let eval do it */ |
8d063cd8 |
636 | if (cmd->c_expr->arg_type == O_FLOP) /* still toggled? */ |
637 | cmdflags = copyopt(cmd,cmd->c_expr[4].arg_ptr.arg_cmd); |
638 | } |
639 | } |
640 | else if (cmdflags & CF_FLIP) { |
641 | if (cmd->c_expr->arg_type == O_FLOP) { /* currently toggled? */ |
642 | match = TRUE; /* force on */ |
643 | } |
644 | } |
645 | |
646 | /* at this point, match says whether our expression was true */ |
647 | |
648 | maybe: |
649 | if (cmdflags & CF_INVERT) |
650 | match = !match; |
a687059c |
651 | if (!match) |
378cc40b |
652 | goto next_cmd; |
8d063cd8 |
653 | } |
a687059c |
654 | #ifdef TAINT |
655 | tainted = 0; /* modifier doesn't affect regular expression */ |
656 | #endif |
8d063cd8 |
657 | |
658 | /* now to do the actual command, if any */ |
659 | |
660 | switch (cmd->c_type) { |
661 | case C_NULL: |
378cc40b |
662 | fatal("panic: cmd_exec"); |
8d063cd8 |
663 | case C_EXPR: /* evaluated for side effects */ |
664 | if (cmd->ucmd.acmd.ac_expr) { /* more to do? */ |
a687059c |
665 | if (gimme == G_ARRAY) { |
666 | lastretstr = Nullstr; |
667 | lastspbase = sp; |
668 | lastsize = newsp - sp; |
669 | } |
670 | else |
671 | lastretstr = retstr; |
672 | while (tmps_max > tmps_base) /* clean up after last eval */ |
673 | str_free(tmps_list[tmps_max--]); |
674 | newsp = eval(cmd->ucmd.acmd.ac_expr,gimme && (cmdflags&CF_TERM),sp); |
675 | st = stack->ary_array; /* possibly reallocated */ |
676 | retstr = st[newsp]; |
8d063cd8 |
677 | } |
678 | break; |
a687059c |
679 | case C_NSWITCH: |
680 | match = (int)str_gnum(STAB_STR(cmd->c_stab)); |
681 | goto doswitch; |
682 | case C_CSWITCH: |
683 | match = *(str_get(STAB_STR(cmd->c_stab))) & 255; |
684 | doswitch: |
685 | match -= cmd->ucmd.scmd.sc_offset; |
686 | if (match < 0) |
687 | match = 0; |
688 | else if (match > cmd->ucmd.scmd.sc_max) |
ff2452de |
689 | match = cmd->ucmd.scmd.sc_max; |
a687059c |
690 | cmd = cmd->ucmd.scmd.sc_next[match]; |
691 | goto tail_recursion_entry; |
692 | case C_NEXT: |
693 | cmd = cmd->ucmd.ccmd.cc_alt; |
694 | goto tail_recursion_entry; |
695 | case C_ELSIF: |
696 | fatal("panic: ELSIF"); |
8d063cd8 |
697 | case C_IF: |
698 | oldspat = curspat; |
378cc40b |
699 | oldsave = savestack->ary_fill; |
8d063cd8 |
700 | #ifdef DEBUGGING |
701 | olddlevel = dlevel; |
702 | #endif |
a687059c |
703 | retstr = &str_yes; |
704 | newsp = -2; |
705 | if (cmd->ucmd.ccmd.cc_true) { |
8d063cd8 |
706 | #ifdef DEBUGGING |
a687059c |
707 | if (debug) { |
708 | debname[dlevel] = 't'; |
709 | debdelim[dlevel] = '_'; |
710 | if (++dlevel >= dlmax) |
711 | grow_dlevel(); |
8d063cd8 |
712 | } |
a687059c |
713 | #endif |
714 | newsp = cmd_exec(cmd->ucmd.ccmd.cc_true,gimme,sp); |
715 | st = stack->ary_array; /* possibly reallocated */ |
716 | retstr = st[newsp]; |
8d063cd8 |
717 | } |
a687059c |
718 | curspat = oldspat; |
719 | if (savestack->ary_fill > oldsave) |
720 | restorelist(oldsave); |
8d063cd8 |
721 | #ifdef DEBUGGING |
a687059c |
722 | dlevel = olddlevel; |
8d063cd8 |
723 | #endif |
a687059c |
724 | cmd = cmd->ucmd.ccmd.cc_alt; |
725 | goto tail_recursion_entry; |
726 | case C_ELSE: |
727 | oldspat = curspat; |
728 | oldsave = savestack->ary_fill; |
729 | #ifdef DEBUGGING |
730 | olddlevel = dlevel; |
731 | #endif |
732 | retstr = &str_undef; |
733 | newsp = -2; |
734 | if (cmd->ucmd.ccmd.cc_true) { |
735 | #ifdef DEBUGGING |
736 | if (debug) { |
737 | debname[dlevel] = 'e'; |
738 | debdelim[dlevel] = '_'; |
739 | if (++dlevel >= dlmax) |
740 | grow_dlevel(); |
8d063cd8 |
741 | } |
a687059c |
742 | #endif |
743 | newsp = cmd_exec(cmd->ucmd.ccmd.cc_true,gimme,sp); |
744 | st = stack->ary_array; /* possibly reallocated */ |
745 | retstr = st[newsp]; |
8d063cd8 |
746 | } |
747 | curspat = oldspat; |
378cc40b |
748 | if (savestack->ary_fill > oldsave) |
749 | restorelist(oldsave); |
8d063cd8 |
750 | #ifdef DEBUGGING |
751 | dlevel = olddlevel; |
752 | #endif |
753 | break; |
754 | case C_BLOCK: |
755 | case C_WHILE: |
756 | if (!(cmdflags & CF_ONCE)) { /* first time through here? */ |
757 | cmdflags |= CF_ONCE; |
a687059c |
758 | if (++loop_ptr >= loop_max) { |
759 | loop_max += 128; |
760 | Renew(loop_stack, loop_max, struct loop); |
761 | } |
8d063cd8 |
762 | loop_stack[loop_ptr].loop_label = cmd->c_label; |
a687059c |
763 | loop_stack[loop_ptr].loop_sp = sp; |
8d063cd8 |
764 | #ifdef DEBUGGING |
765 | if (debug & 4) { |
766 | deb("(Pushing label #%d %s)\n", |
a687059c |
767 | loop_ptr, cmd->c_label ? cmd->c_label : ""); |
8d063cd8 |
768 | } |
769 | #endif |
770 | } |
d8f2e4cc |
771 | #ifdef JMPCLOBBER |
772 | cmdparm = cmd; |
773 | #endif |
774 | if (match = setjmp(loop_stack[loop_ptr].loop_env)) { |
a687059c |
775 | st = stack->ary_array; /* possibly reallocated */ |
afd9f252 |
776 | #ifdef JMPCLOBBER |
d8f2e4cc |
777 | cmd = cmdparm; |
778 | cmdflags = cmd->c_flags|CF_ONCE; |
779 | go_to = goto_targ; |
780 | #endif |
afd9f252 |
781 | if (savestack->ary_fill > oldsave) |
782 | restorelist(oldsave); |
d8f2e4cc |
783 | switch (match) { |
afd9f252 |
784 | default: |
785 | fatal("longjmp returned bad value (%d)",match); |
d8f2e4cc |
786 | case O_LAST: |
787 | if (lastretstr) { |
788 | retstr = lastretstr; |
789 | newsp = -2; |
790 | } |
791 | else { |
792 | newsp = sp + lastsize; |
793 | retstr = st[newsp]; |
794 | } |
795 | curspat = oldspat; |
d8f2e4cc |
796 | goto next_cmd; |
797 | case O_NEXT: |
798 | #ifdef JMPCLOBBER |
a687059c |
799 | newsp = -2; |
d8f2e4cc |
800 | retstr = &str_undef; |
801 | #endif |
802 | goto next_iter; |
803 | case O_REDO: |
36ce8bec |
804 | #ifdef DEBUGGING |
d8f2e4cc |
805 | dlevel = olddlevel; |
36ce8bec |
806 | #endif |
d8f2e4cc |
807 | #ifdef JMPCLOBBER |
808 | newsp = -2; |
809 | retstr = &str_undef; |
810 | #endif |
811 | goto doit; |
812 | } |
8d063cd8 |
813 | } |
814 | oldspat = curspat; |
378cc40b |
815 | oldsave = savestack->ary_fill; |
8d063cd8 |
816 | #ifdef DEBUGGING |
817 | olddlevel = dlevel; |
818 | #endif |
819 | doit: |
820 | if (cmd->ucmd.ccmd.cc_true) { |
821 | #ifdef DEBUGGING |
378cc40b |
822 | if (debug) { |
823 | debname[dlevel] = 't'; |
a687059c |
824 | debdelim[dlevel] = '_'; |
825 | if (++dlevel >= dlmax) |
826 | grow_dlevel(); |
378cc40b |
827 | } |
8d063cd8 |
828 | #endif |
a687059c |
829 | newsp = cmd_exec(cmd->ucmd.ccmd.cc_true,gimme,sp); |
830 | st = stack->ary_array; /* possibly reallocated */ |
831 | retstr = st[newsp]; |
8d063cd8 |
832 | } |
378cc40b |
833 | /* actually, this spot is rarely reached anymore since the above |
8d063cd8 |
834 | * cmd_exec() returns through longjmp(). Hooray for structure. |
835 | */ |
836 | next_iter: |
837 | #ifdef DEBUGGING |
838 | dlevel = olddlevel; |
839 | #endif |
840 | if (cmd->ucmd.ccmd.cc_alt) { |
841 | #ifdef DEBUGGING |
378cc40b |
842 | if (debug) { |
843 | debname[dlevel] = 'a'; |
a687059c |
844 | debdelim[dlevel] = '_'; |
845 | if (++dlevel >= dlmax) |
846 | grow_dlevel(); |
378cc40b |
847 | } |
8d063cd8 |
848 | #endif |
a687059c |
849 | newsp = cmd_exec(cmd->ucmd.ccmd.cc_alt,gimme,sp); |
850 | st = stack->ary_array; /* possibly reallocated */ |
851 | retstr = st[newsp]; |
8d063cd8 |
852 | } |
853 | finish_while: |
854 | curspat = oldspat; |
afd9f252 |
855 | if (savestack->ary_fill > oldsave) { |
856 | if (cmdflags & CF_TERM) { |
857 | for (match = sp + 1; match <= newsp; match++) |
858 | st[match] = str_static(st[match]); |
859 | retstr = st[newsp]; |
860 | } |
378cc40b |
861 | restorelist(oldsave); |
afd9f252 |
862 | } |
8d063cd8 |
863 | #ifdef DEBUGGING |
864 | dlevel = olddlevel - 1; |
865 | #endif |
866 | if (cmd->c_type != C_BLOCK) |
867 | goto until_loop; /* go back and evaluate conditional again */ |
868 | } |
869 | if (cmdflags & CF_LOOP) { |
870 | cmdflags |= CF_COND; /* now test the condition */ |
378cc40b |
871 | #ifdef DEBUGGING |
872 | dlevel = entdlevel; |
873 | #endif |
8d063cd8 |
874 | goto until_loop; |
875 | } |
378cc40b |
876 | next_cmd: |
877 | if (cmdflags & CF_ONCE) { |
878 | #ifdef DEBUGGING |
879 | if (debug & 4) { |
a687059c |
880 | tmps = loop_stack[loop_ptr].loop_label; |
881 | deb("(Popping label #%d %s)\n",loop_ptr, tmps ? tmps : ""); |
378cc40b |
882 | } |
883 | #endif |
884 | loop_ptr--; |
afd9f252 |
885 | if ((cmdflags & CF_OPTIMIZE) == CFT_ARRAY && |
886 | savestack->ary_fill > aryoptsave) |
a687059c |
887 | restorelist(aryoptsave); |
378cc40b |
888 | } |
8d063cd8 |
889 | cmd = cmd->c_next; |
890 | goto tail_recursion_entry; |
891 | } |
892 | |
893 | #ifdef DEBUGGING |
a687059c |
894 | # ifndef VARARGS |
8d063cd8 |
895 | /*VARARGS1*/ |
896 | deb(pat,a1,a2,a3,a4,a5,a6,a7,a8) |
897 | char *pat; |
898 | { |
899 | register int i; |
900 | |
378cc40b |
901 | fprintf(stderr,"%-4ld",(long)line); |
8d063cd8 |
902 | for (i=0; i<dlevel; i++) |
903 | fprintf(stderr,"%c%c ",debname[i],debdelim[i]); |
904 | fprintf(stderr,pat,a1,a2,a3,a4,a5,a6,a7,a8); |
905 | } |
a687059c |
906 | # else |
907 | /*VARARGS1*/ |
908 | deb(va_alist) |
909 | va_dcl |
910 | { |
911 | va_list args; |
912 | char *pat; |
913 | register int i; |
914 | |
915 | va_start(args); |
916 | fprintf(stderr,"%-4ld",(long)line); |
917 | for (i=0; i<dlevel; i++) |
918 | fprintf(stderr,"%c%c ",debname[i],debdelim[i]); |
919 | |
920 | pat = va_arg(args, char *); |
921 | (void) vfprintf(stderr,pat,args); |
922 | va_end( args ); |
923 | } |
924 | # endif |
8d063cd8 |
925 | #endif |
926 | |
927 | copyopt(cmd,which) |
928 | register CMD *cmd; |
929 | register CMD *which; |
930 | { |
931 | cmd->c_flags &= CF_ONCE|CF_COND|CF_LOOP; |
932 | cmd->c_flags |= which->c_flags; |
378cc40b |
933 | cmd->c_short = which->c_short; |
934 | cmd->c_slen = which->c_slen; |
8d063cd8 |
935 | cmd->c_stab = which->c_stab; |
936 | return cmd->c_flags; |
937 | } |
378cc40b |
938 | |
a687059c |
939 | ARRAY * |
940 | saveary(stab) |
941 | STAB *stab; |
942 | { |
943 | register STR *str; |
944 | |
945 | str = Str_new(10,0); |
946 | str->str_state = SS_SARY; |
947 | str->str_u.str_stab = stab; |
948 | if (str->str_ptr) { |
949 | Safefree(str->str_ptr); |
950 | str->str_len = 0; |
951 | } |
952 | str->str_ptr = (char*)stab_array(stab); |
953 | (void)apush(savestack,str); /* save array ptr */ |
954 | stab_xarray(stab) = Null(ARRAY*); |
955 | return stab_xarray(aadd(stab)); |
956 | } |
957 | |
958 | HASH * |
959 | savehash(stab) |
960 | STAB *stab; |
961 | { |
962 | register STR *str; |
963 | |
964 | str = Str_new(11,0); |
965 | str->str_state = SS_SHASH; |
966 | str->str_u.str_stab = stab; |
967 | if (str->str_ptr) { |
968 | Safefree(str->str_ptr); |
969 | str->str_len = 0; |
970 | } |
971 | str->str_ptr = (char*)stab_hash(stab); |
972 | (void)apush(savestack,str); /* save hash ptr */ |
973 | stab_xhash(stab) = Null(HASH*); |
974 | return stab_xhash(hadd(stab)); |
975 | } |
976 | |
977 | void |
978 | saveitem(item) |
979 | register STR *item; |
980 | { |
981 | register STR *str; |
982 | |
983 | (void)apush(savestack,item); /* remember the pointer */ |
984 | str = Str_new(12,0); |
985 | str_sset(str,item); |
986 | (void)apush(savestack,str); /* remember the value */ |
987 | } |
988 | |
989 | void |
990 | saveint(intp) |
991 | int *intp; |
992 | { |
993 | register STR *str; |
994 | |
995 | str = Str_new(13,0); |
996 | str->str_state = SS_SINT; |
997 | str->str_u.str_useful = (long)*intp; /* remember value */ |
998 | if (str->str_ptr) { |
999 | Safefree(str->str_ptr); |
1000 | str->str_len = 0; |
1001 | } |
1002 | str->str_ptr = (char*)intp; /* remember pointer */ |
1003 | (void)apush(savestack,str); |
1004 | } |
1005 | |
1006 | void |
1007 | savelong(longp) |
1008 | long *longp; |
1009 | { |
1010 | register STR *str; |
1011 | |
1012 | str = Str_new(14,0); |
1013 | str->str_state = SS_SLONG; |
1014 | str->str_u.str_useful = *longp; /* remember value */ |
1015 | if (str->str_ptr) { |
1016 | Safefree(str->str_ptr); |
1017 | str->str_len = 0; |
1018 | } |
1019 | str->str_ptr = (char*)longp; /* remember pointer */ |
1020 | (void)apush(savestack,str); |
1021 | } |
1022 | |
1023 | void |
1024 | savesptr(sptr) |
1025 | STR **sptr; |
1026 | { |
1027 | register STR *str; |
1028 | |
1029 | str = Str_new(15,0); |
1030 | str->str_state = SS_SSTRP; |
1031 | str->str_magic = *sptr; /* remember value */ |
1032 | if (str->str_ptr) { |
1033 | Safefree(str->str_ptr); |
1034 | str->str_len = 0; |
1035 | } |
1036 | str->str_ptr = (char*)sptr; /* remember pointer */ |
1037 | (void)apush(savestack,str); |
1038 | } |
1039 | |
1040 | void |
1041 | savenostab(stab) |
1042 | STAB *stab; |
1043 | { |
1044 | register STR *str; |
1045 | |
1046 | str = Str_new(16,0); |
1047 | str->str_state = SS_SNSTAB; |
1048 | str->str_magic = (STR*)stab; /* remember which stab to free */ |
1049 | (void)apush(savestack,str); |
1050 | } |
1051 | |
1052 | void |
1053 | savehptr(hptr) |
1054 | HASH **hptr; |
1055 | { |
1056 | register STR *str; |
1057 | |
1058 | str = Str_new(17,0); |
1059 | str->str_state = SS_SHPTR; |
1060 | str->str_u.str_hash = *hptr; /* remember value */ |
1061 | if (str->str_ptr) { |
1062 | Safefree(str->str_ptr); |
1063 | str->str_len = 0; |
1064 | } |
1065 | str->str_ptr = (char*)hptr; /* remember pointer */ |
1066 | (void)apush(savestack,str); |
1067 | } |
1068 | |
378cc40b |
1069 | void |
1070 | savelist(sarg,maxsarg) |
1071 | register STR **sarg; |
1072 | int maxsarg; |
1073 | { |
1074 | register STR *str; |
1075 | register int i; |
1076 | |
1077 | for (i = 1; i <= maxsarg; i++) { |
a687059c |
1078 | (void)apush(savestack,sarg[i]); /* remember the pointer */ |
1079 | str = Str_new(18,0); |
378cc40b |
1080 | str_sset(str,sarg[i]); |
a687059c |
1081 | (void)apush(savestack,str); /* remember the value */ |
d8f2e4cc |
1082 | sarg[i]->str_u.str_useful = -1; |
378cc40b |
1083 | } |
1084 | } |
1085 | |
1086 | void |
1087 | restorelist(base) |
1088 | int base; |
1089 | { |
1090 | register STR *str; |
1091 | register STR *value; |
a687059c |
1092 | register STAB *stab; |
378cc40b |
1093 | |
a687059c |
1094 | if (base < -1) |
1095 | fatal("panic: corrupt saved stack index"); |
378cc40b |
1096 | while (savestack->ary_fill > base) { |
1097 | value = apop(savestack); |
a687059c |
1098 | switch (value->str_state) { |
1099 | case SS_NORM: /* normal string */ |
1100 | case SS_INCR: |
1101 | str = apop(savestack); |
1102 | str_replace(str,value); |
1103 | STABSET(str); |
1104 | break; |
1105 | case SS_SARY: /* array reference */ |
1106 | stab = value->str_u.str_stab; |
1107 | afree(stab_xarray(stab)); |
1108 | stab_xarray(stab) = (ARRAY*)value->str_ptr; |
1109 | value->str_ptr = Nullch; |
1110 | str_free(value); |
1111 | break; |
1112 | case SS_SHASH: /* hash reference */ |
1113 | stab = value->str_u.str_stab; |
1114 | (void)hfree(stab_xhash(stab)); |
1115 | stab_xhash(stab) = (HASH*)value->str_ptr; |
1116 | value->str_ptr = Nullch; |
1117 | str_free(value); |
1118 | break; |
1119 | case SS_SINT: /* int reference */ |
1120 | *((int*)value->str_ptr) = (int)value->str_u.str_useful; |
1121 | value->str_ptr = Nullch; |
1122 | str_free(value); |
1123 | break; |
1124 | case SS_SLONG: /* long reference */ |
1125 | *((long*)value->str_ptr) = value->str_u.str_useful; |
1126 | value->str_ptr = Nullch; |
1127 | str_free(value); |
1128 | break; |
1129 | case SS_SSTRP: /* STR* reference */ |
1130 | *((STR**)value->str_ptr) = value->str_magic; |
1131 | value->str_magic = Nullstr; |
1132 | value->str_ptr = Nullch; |
1133 | str_free(value); |
1134 | break; |
1135 | case SS_SHPTR: /* HASH* reference */ |
1136 | *((HASH**)value->str_ptr) = value->str_u.str_hash; |
1137 | value->str_ptr = Nullch; |
1138 | str_free(value); |
1139 | break; |
1140 | case SS_SNSTAB: |
1141 | stab = (STAB*)value->str_magic; |
1142 | value->str_magic = Nullstr; |
1143 | (void)stab_clear(stab); |
1144 | str_free(value); |
1145 | break; |
1146 | default: |
1147 | fatal("panic: restorelist inconsistency"); |
1148 | } |
378cc40b |
1149 | } |
1150 | } |
a687059c |
1151 | |
bf38876a |
1152 | #ifdef DEBUGGING |
a687059c |
1153 | void |
1154 | grow_dlevel() |
1155 | { |
1156 | dlmax += 128; |
1157 | Renew(debname, dlmax, char); |
1158 | Renew(debdelim, dlmax, char); |
1159 | } |
bf38876a |
1160 | #endif |