Commit | Line | Data |
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a0d0e21e | 1 | /* cop.h |
79072805 | 2 | * |
1129b882 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
8622e0e2 | 4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
8622e0e2 | 9 | * Control ops (cops) are one of the two ops OP_NEXTSTATE and OP_DBSTATE, |
775e5718 | 10 | * that (loosely speaking) are statement separators. |
3ffa1527 JH |
11 | * They hold information important for lexical state and error reporting. |
12 | * At run time, PL_curcop is set to point to the most recently executed cop, | |
a3985cdc | 13 | * and thus can be used to determine our current state. |
79072805 LW |
14 | */ |
15 | ||
0d2925a6 | 16 | /* A jmpenv packages the state required to perform a proper non-local jump. |
1c98cc53 DM |
17 | * Note that there is a PL_start_env initialized when perl starts, and |
18 | * PL_top_env points to this initially, so PL_top_env should always be | |
19 | * non-null. | |
0d2925a6 | 20 | * |
1c98cc53 DM |
21 | * Existence of a non-null PL_top_env->je_prev implies it is valid to call |
22 | * longjmp() at that runlevel (we make sure PL_start_env.je_prev is always | |
0d2925a6 DM |
23 | * null to ensure this). |
24 | * | |
25 | * je_mustcatch, when set at any runlevel to TRUE, means eval ops must | |
26 | * establish a local jmpenv to handle exception traps. Care must be taken | |
27 | * to restore the previous value of je_mustcatch before exiting the | |
28 | * stack frame iff JMPENV_PUSH was not called in that stack frame. | |
29 | * GSAR 97-03-27 | |
30 | */ | |
31 | ||
32 | struct jmpenv { | |
33 | struct jmpenv * je_prev; | |
caa674f3 | 34 | Sigjmp_buf je_buf; /* uninit if je_prev is NULL */ |
0d2925a6 DM |
35 | int je_ret; /* last exception thrown */ |
36 | bool je_mustcatch; /* need to call longjmp()? */ | |
a68090fe | 37 | U16 je_old_delaymagic; /* saved PL_delaymagic */ |
9449f0d6 | 38 | SSize_t je_old_stack_hwm; |
0d2925a6 DM |
39 | }; |
40 | ||
41 | typedef struct jmpenv JMPENV; | |
42 | ||
9449f0d6 DM |
43 | #if defined DEBUGGING && !defined DEBUGGING_RE_ONLY |
44 | # define JE_OLD_STACK_HWM_zero PL_start_env.je_old_stack_hwm = 0 | |
45 | # define JE_OLD_STACK_HWM_save(je) \ | |
46 | (je).je_old_stack_hwm = PL_curstackinfo->si_stack_hwm | |
47 | # define JE_OLD_STACK_HWM_restore(je) \ | |
978b1859 DM |
48 | if (PL_curstackinfo->si_stack_hwm < (je).je_old_stack_hwm) \ |
49 | PL_curstackinfo->si_stack_hwm = (je).je_old_stack_hwm | |
9449f0d6 DM |
50 | #else |
51 | # define JE_OLD_STACK_HWM_zero NOOP | |
52 | # define JE_OLD_STACK_HWM_save(je) NOOP | |
53 | # define JE_OLD_STACK_HWM_restore(je) NOOP | |
54 | #endif | |
55 | ||
0d2925a6 DM |
56 | /* |
57 | * How to build the first jmpenv. | |
58 | * | |
59 | * top_env needs to be non-zero. It points to an area | |
60 | * in which longjmp() stuff is stored, as C callstack | |
61 | * info there at least is thread specific this has to | |
62 | * be per-thread. Otherwise a 'die' in a thread gives | |
63 | * that thread the C stack of last thread to do an eval {}! | |
64 | */ | |
65 | ||
66 | #define JMPENV_BOOTSTRAP \ | |
67 | STMT_START { \ | |
caa674f3 DD |
68 | PERL_POISON_EXPR(PoisonNew(&PL_start_env, 1, JMPENV));\ |
69 | PL_top_env = &PL_start_env; \ | |
70 | PL_start_env.je_prev = NULL; \ | |
0d2925a6 DM |
71 | PL_start_env.je_ret = -1; \ |
72 | PL_start_env.je_mustcatch = TRUE; \ | |
a68090fe | 73 | PL_start_env.je_old_delaymagic = 0; \ |
9449f0d6 | 74 | JE_OLD_STACK_HWM_zero; \ |
0d2925a6 DM |
75 | } STMT_END |
76 | ||
77 | /* | |
78 | * PERL_FLEXIBLE_EXCEPTIONS | |
79 | * | |
80 | * All the flexible exceptions code has been removed. | |
81 | * See the following threads for details: | |
82 | * | |
83 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2004-07/msg00378.html | |
84 | * | |
85 | * Joshua's original patches (which weren't applied) and discussion: | |
86 | * | |
87 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01396.html | |
88 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01489.html | |
89 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01491.html | |
90 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01608.html | |
91 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg02144.html | |
92 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg02998.html | |
93 | * | |
94 | * Chip's reworked patch and discussion: | |
95 | * | |
96 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1999-03/msg00520.html | |
97 | * | |
98 | * The flaw in these patches (which went unnoticed at the time) was | |
99 | * that they moved some code that could potentially die() out of the | |
100 | * region protected by the setjmp()s. This caused exceptions within | |
101 | * END blocks and such to not be handled by the correct setjmp(). | |
102 | * | |
103 | * The original patches that introduces flexible exceptions were: | |
104 | * | |
ff7e9008 MS |
105 | * http://perl5.git.perl.org/perl.git/commit/312caa8e97f1c7ee342a9895c2f0e749625b4929 |
106 | * http://perl5.git.perl.org/perl.git/commit/14dd3ad8c9bf82cf09798a22cc89a9862dfd6d1a | |
107 | * | |
0d2925a6 DM |
108 | */ |
109 | ||
110 | #define dJMPENV JMPENV cur_env | |
111 | ||
112 | #define JMPENV_PUSH(v) \ | |
113 | STMT_START { \ | |
1c98cc53 DM |
114 | DEBUG_l({ \ |
115 | int i = 0; JMPENV *p = PL_top_env; \ | |
116 | while (p) { i++; p = p->je_prev; } \ | |
91e35ba1 DM |
117 | Perl_deb(aTHX_ "JUMPENV_PUSH level=%d at %s:%d\n", \ |
118 | i, __FILE__, __LINE__);}) \ | |
0d2925a6 | 119 | cur_env.je_prev = PL_top_env; \ |
9449f0d6 | 120 | JE_OLD_STACK_HWM_save(cur_env); \ |
0d2925a6 | 121 | cur_env.je_ret = PerlProc_setjmp(cur_env.je_buf, SCOPE_SAVES_SIGNAL_MASK); \ |
9449f0d6 | 122 | JE_OLD_STACK_HWM_restore(cur_env); \ |
0d2925a6 DM |
123 | PL_top_env = &cur_env; \ |
124 | cur_env.je_mustcatch = FALSE; \ | |
a68090fe | 125 | cur_env.je_old_delaymagic = PL_delaymagic; \ |
0d2925a6 DM |
126 | (v) = cur_env.je_ret; \ |
127 | } STMT_END | |
128 | ||
129 | #define JMPENV_POP \ | |
130 | STMT_START { \ | |
1c98cc53 DM |
131 | DEBUG_l({ \ |
132 | int i = -1; JMPENV *p = PL_top_env; \ | |
133 | while (p) { i++; p = p->je_prev; } \ | |
91e35ba1 DM |
134 | Perl_deb(aTHX_ "JUMPENV_POP level=%d at %s:%d\n", \ |
135 | i, __FILE__, __LINE__);}) \ | |
d3ab86be | 136 | assert(PL_top_env == &cur_env); \ |
a68090fe | 137 | PL_delaymagic = cur_env.je_old_delaymagic; \ |
0d2925a6 DM |
138 | PL_top_env = cur_env.je_prev; \ |
139 | } STMT_END | |
140 | ||
141 | #define JMPENV_JUMP(v) \ | |
142 | STMT_START { \ | |
1c98cc53 DM |
143 | DEBUG_l({ \ |
144 | int i = -1; JMPENV *p = PL_top_env; \ | |
145 | while (p) { i++; p = p->je_prev; } \ | |
91e35ba1 DM |
146 | Perl_deb(aTHX_ "JUMPENV_JUMP(%d) level=%d at %s:%d\n", \ |
147 | (int)v, i, __FILE__, __LINE__);}) \ | |
0d2925a6 DM |
148 | if (PL_top_env->je_prev) \ |
149 | PerlProc_longjmp(PL_top_env->je_buf, (v)); \ | |
150 | if ((v) == 2) \ | |
37038d91 | 151 | PerlProc_exit(STATUS_EXIT); \ |
5637ef5b | 152 | PerlIO_printf(PerlIO_stderr(), "panic: top_env, v=%d\n", (int)v); \ |
0d2925a6 DM |
153 | PerlProc_exit(1); \ |
154 | } STMT_END | |
155 | ||
156 | #define CATCH_GET (PL_top_env->je_mustcatch) | |
1c98cc53 DM |
157 | #define CATCH_SET(v) \ |
158 | STMT_START { \ | |
159 | DEBUG_l( \ | |
160 | Perl_deb(aTHX_ \ | |
161 | "JUMPLEVEL set catch %d => %d (for %p) at %s:%d\n", \ | |
162 | PL_top_env->je_mustcatch, v, (void*)PL_top_env, \ | |
163 | __FILE__, __LINE__);) \ | |
164 | PL_top_env->je_mustcatch = (v); \ | |
165 | } STMT_END | |
0d2925a6 | 166 | |
20439bc7 Z |
167 | /* |
168 | =head1 COP Hint Hashes | |
169 | */ | |
170 | ||
171 | typedef struct refcounted_he COPHH; | |
172 | ||
173 | #define COPHH_KEY_UTF8 REFCOUNTED_HE_KEY_UTF8 | |
174 | ||
175 | /* | |
ffd08bbf | 176 | =for apidoc Amx|SV *|cophh_fetch_pvn|const COPHH *cophh|const char *keypv|STRLEN keylen|U32 hash|U32 flags |
20439bc7 | 177 | |
2d7f6611 KW |
178 | Look up the entry in the cop hints hash C<cophh> with the key specified by |
179 | C<keypv> and C<keylen>. If C<flags> has the C<COPHH_KEY_UTF8> bit set, | |
20439bc7 | 180 | the key octets are interpreted as UTF-8, otherwise they are interpreted |
2d7f6611 | 181 | as Latin-1. C<hash> is a precomputed hash of the key string, or zero if |
20439bc7 Z |
182 | it has not been precomputed. Returns a mortal scalar copy of the value |
183 | associated with the key, or C<&PL_sv_placeholder> if there is no value | |
184 | associated with the key. | |
185 | ||
186 | =cut | |
187 | */ | |
188 | ||
189 | #define cophh_fetch_pvn(cophh, keypv, keylen, hash, flags) \ | |
190 | Perl_refcounted_he_fetch_pvn(aTHX_ cophh, keypv, keylen, hash, flags) | |
191 | ||
192 | /* | |
3bb9fd01 | 193 | =for apidoc Amx|SV *|cophh_fetch_pvs|const COPHH *cophh|"key"|U32 flags |
20439bc7 | 194 | |
1568d13a | 195 | Like L</cophh_fetch_pvn>, but takes a literal string instead |
0c395ea5 | 196 | of a string/length pair, and no precomputed hash. |
20439bc7 Z |
197 | |
198 | =cut | |
199 | */ | |
200 | ||
201 | #define cophh_fetch_pvs(cophh, key, flags) \ | |
202 | Perl_refcounted_he_fetch_pvn(aTHX_ cophh, STR_WITH_LEN(key), 0, flags) | |
203 | ||
204 | /* | |
ffd08bbf | 205 | =for apidoc Amx|SV *|cophh_fetch_pv|const COPHH *cophh|const char *key|U32 hash|U32 flags |
20439bc7 Z |
206 | |
207 | Like L</cophh_fetch_pvn>, but takes a nul-terminated string instead of | |
208 | a string/length pair. | |
209 | ||
210 | =cut | |
211 | */ | |
212 | ||
213 | #define cophh_fetch_pv(cophh, key, hash, flags) \ | |
214 | Perl_refcounted_he_fetch_pv(aTHX_ cophh, key, hash, flags) | |
215 | ||
216 | /* | |
ffd08bbf | 217 | =for apidoc Amx|SV *|cophh_fetch_sv|const COPHH *cophh|SV *key|U32 hash|U32 flags |
20439bc7 Z |
218 | |
219 | Like L</cophh_fetch_pvn>, but takes a Perl scalar instead of a | |
220 | string/length pair. | |
221 | ||
222 | =cut | |
223 | */ | |
224 | ||
225 | #define cophh_fetch_sv(cophh, key, hash, flags) \ | |
226 | Perl_refcounted_he_fetch_sv(aTHX_ cophh, key, hash, flags) | |
227 | ||
228 | /* | |
ffd08bbf | 229 | =for apidoc Amx|HV *|cophh_2hv|const COPHH *cophh|U32 flags |
20439bc7 Z |
230 | |
231 | Generates and returns a standard Perl hash representing the full set of | |
2d7f6611 | 232 | key/value pairs in the cop hints hash C<cophh>. C<flags> is currently |
20439bc7 Z |
233 | unused and must be zero. |
234 | ||
235 | =cut | |
236 | */ | |
237 | ||
238 | #define cophh_2hv(cophh, flags) \ | |
239 | Perl_refcounted_he_chain_2hv(aTHX_ cophh, flags) | |
240 | ||
241 | /* | |
ffd08bbf | 242 | =for apidoc Amx|COPHH *|cophh_copy|COPHH *cophh |
20439bc7 | 243 | |
2d7f6611 | 244 | Make and return a complete copy of the cop hints hash C<cophh>. |
20439bc7 Z |
245 | |
246 | =cut | |
247 | */ | |
248 | ||
249 | #define cophh_copy(cophh) Perl_refcounted_he_inc(aTHX_ cophh) | |
250 | ||
251 | /* | |
ffd08bbf | 252 | =for apidoc Amx|void|cophh_free|COPHH *cophh |
20439bc7 | 253 | |
2d7f6611 | 254 | Discard the cop hints hash C<cophh>, freeing all resources associated |
20439bc7 Z |
255 | with it. |
256 | ||
257 | =cut | |
258 | */ | |
259 | ||
260 | #define cophh_free(cophh) Perl_refcounted_he_free(aTHX_ cophh) | |
261 | ||
262 | /* | |
ffd08bbf | 263 | =for apidoc Amx|COPHH *|cophh_new_empty |
20439bc7 Z |
264 | |
265 | Generate and return a fresh cop hints hash containing no entries. | |
266 | ||
267 | =cut | |
268 | */ | |
269 | ||
270 | #define cophh_new_empty() ((COPHH *)NULL) | |
271 | ||
272 | /* | |
ffd08bbf | 273 | =for apidoc Amx|COPHH *|cophh_store_pvn|COPHH *cophh|const char *keypv|STRLEN keylen|U32 hash|SV *value|U32 flags |
20439bc7 | 274 | |
2d7f6611 | 275 | Stores a value, associated with a key, in the cop hints hash C<cophh>, |
20439bc7 Z |
276 | and returns the modified hash. The returned hash pointer is in general |
277 | not the same as the hash pointer that was passed in. The input hash is | |
278 | consumed by the function, and the pointer to it must not be subsequently | |
279 | used. Use L</cophh_copy> if you need both hashes. | |
280 | ||
2d7f6611 | 281 | The key is specified by C<keypv> and C<keylen>. If C<flags> has the |
20439bc7 | 282 | C<COPHH_KEY_UTF8> bit set, the key octets are interpreted as UTF-8, |
2d7f6611 | 283 | otherwise they are interpreted as Latin-1. C<hash> is a precomputed |
20439bc7 Z |
284 | hash of the key string, or zero if it has not been precomputed. |
285 | ||
2d7f6611 | 286 | C<value> is the scalar value to store for this key. C<value> is copied |
20439bc7 Z |
287 | by this function, which thus does not take ownership of any reference |
288 | to it, and later changes to the scalar will not be reflected in the | |
289 | value visible in the cop hints hash. Complex types of scalar will not | |
290 | be stored with referential integrity, but will be coerced to strings. | |
291 | ||
292 | =cut | |
293 | */ | |
294 | ||
295 | #define cophh_store_pvn(cophh, keypv, keylen, hash, value, flags) \ | |
296 | Perl_refcounted_he_new_pvn(aTHX_ cophh, keypv, keylen, hash, value, flags) | |
297 | ||
298 | /* | |
3bb9fd01 | 299 | =for apidoc Amx|COPHH *|cophh_store_pvs|const COPHH *cophh|"key"|SV *value|U32 flags |
20439bc7 | 300 | |
1568d13a | 301 | Like L</cophh_store_pvn>, but takes a literal string instead |
0c395ea5 | 302 | of a string/length pair, and no precomputed hash. |
20439bc7 Z |
303 | |
304 | =cut | |
305 | */ | |
306 | ||
307 | #define cophh_store_pvs(cophh, key, value, flags) \ | |
308 | Perl_refcounted_he_new_pvn(aTHX_ cophh, STR_WITH_LEN(key), 0, value, flags) | |
309 | ||
310 | /* | |
ffd08bbf | 311 | =for apidoc Amx|COPHH *|cophh_store_pv|const COPHH *cophh|const char *key|U32 hash|SV *value|U32 flags |
20439bc7 Z |
312 | |
313 | Like L</cophh_store_pvn>, but takes a nul-terminated string instead of | |
314 | a string/length pair. | |
315 | ||
316 | =cut | |
317 | */ | |
318 | ||
319 | #define cophh_store_pv(cophh, key, hash, value, flags) \ | |
320 | Perl_refcounted_he_new_pv(aTHX_ cophh, key, hash, value, flags) | |
321 | ||
322 | /* | |
ffd08bbf | 323 | =for apidoc Amx|COPHH *|cophh_store_sv|const COPHH *cophh|SV *key|U32 hash|SV *value|U32 flags |
20439bc7 Z |
324 | |
325 | Like L</cophh_store_pvn>, but takes a Perl scalar instead of a | |
326 | string/length pair. | |
327 | ||
328 | =cut | |
329 | */ | |
330 | ||
331 | #define cophh_store_sv(cophh, key, hash, value, flags) \ | |
332 | Perl_refcounted_he_new_sv(aTHX_ cophh, key, hash, value, flags) | |
333 | ||
334 | /* | |
ffd08bbf | 335 | =for apidoc Amx|COPHH *|cophh_delete_pvn|COPHH *cophh|const char *keypv|STRLEN keylen|U32 hash|U32 flags |
20439bc7 | 336 | |
2d7f6611 | 337 | Delete a key and its associated value from the cop hints hash C<cophh>, |
20439bc7 Z |
338 | and returns the modified hash. The returned hash pointer is in general |
339 | not the same as the hash pointer that was passed in. The input hash is | |
340 | consumed by the function, and the pointer to it must not be subsequently | |
341 | used. Use L</cophh_copy> if you need both hashes. | |
342 | ||
2d7f6611 | 343 | The key is specified by C<keypv> and C<keylen>. If C<flags> has the |
20439bc7 | 344 | C<COPHH_KEY_UTF8> bit set, the key octets are interpreted as UTF-8, |
2d7f6611 | 345 | otherwise they are interpreted as Latin-1. C<hash> is a precomputed |
20439bc7 Z |
346 | hash of the key string, or zero if it has not been precomputed. |
347 | ||
348 | =cut | |
349 | */ | |
350 | ||
351 | #define cophh_delete_pvn(cophh, keypv, keylen, hash, flags) \ | |
352 | Perl_refcounted_he_new_pvn(aTHX_ cophh, keypv, keylen, hash, \ | |
353 | (SV *)NULL, flags) | |
354 | ||
355 | /* | |
3bb9fd01 | 356 | =for apidoc Amx|COPHH *|cophh_delete_pvs|const COPHH *cophh|"key"|U32 flags |
20439bc7 | 357 | |
1568d13a | 358 | Like L</cophh_delete_pvn>, but takes a literal string instead |
0c395ea5 | 359 | of a string/length pair, and no precomputed hash. |
20439bc7 Z |
360 | |
361 | =cut | |
362 | */ | |
363 | ||
364 | #define cophh_delete_pvs(cophh, key, flags) \ | |
365 | Perl_refcounted_he_new_pvn(aTHX_ cophh, STR_WITH_LEN(key), 0, \ | |
366 | (SV *)NULL, flags) | |
367 | ||
368 | /* | |
ffd08bbf | 369 | =for apidoc Amx|COPHH *|cophh_delete_pv|const COPHH *cophh|const char *key|U32 hash|U32 flags |
20439bc7 Z |
370 | |
371 | Like L</cophh_delete_pvn>, but takes a nul-terminated string instead of | |
372 | a string/length pair. | |
373 | ||
374 | =cut | |
375 | */ | |
376 | ||
377 | #define cophh_delete_pv(cophh, key, hash, flags) \ | |
378 | Perl_refcounted_he_new_pv(aTHX_ cophh, key, hash, (SV *)NULL, flags) | |
379 | ||
380 | /* | |
ffd08bbf | 381 | =for apidoc Amx|COPHH *|cophh_delete_sv|const COPHH *cophh|SV *key|U32 hash|U32 flags |
20439bc7 Z |
382 | |
383 | Like L</cophh_delete_pvn>, but takes a Perl scalar instead of a | |
384 | string/length pair. | |
385 | ||
386 | =cut | |
387 | */ | |
388 | ||
389 | #define cophh_delete_sv(cophh, key, hash, flags) \ | |
390 | Perl_refcounted_he_new_sv(aTHX_ cophh, key, hash, (SV *)NULL, flags) | |
0d2925a6 | 391 | |
5ac1e9b2 | 392 | #include "mydtrace.h" |
0d2925a6 | 393 | |
88df5f01 FC |
394 | struct cop { |
395 | BASEOP | |
396 | /* On LP64 putting this here takes advantage of the fact that BASEOP isn't | |
397 | an exact multiple of 8 bytes to save structure padding. */ | |
398 | line_t cop_line; /* line # of this command */ | |
399 | /* label for this construct is now stored in cop_hints_hash */ | |
57843af0 | 400 | #ifdef USE_ITHREADS |
88df5f01 FC |
401 | PADOFFSET cop_stashoff; /* offset into PL_stashpad, for the |
402 | package the line was compiled in */ | |
1dc74fdb | 403 | char * cop_file; /* file name the following line # is from */ |
57843af0 | 404 | #else |
88df5f01 | 405 | HV * cop_stash; /* package line was compiled in */ |
79072805 | 406 | GV * cop_filegv; /* file the following line # is from */ |
57843af0 | 407 | #endif |
88df5f01 FC |
408 | U32 cop_hints; /* hints bits from pragmata */ |
409 | U32 cop_seq; /* parse sequence number */ | |
410 | /* Beware. mg.c and warnings.pl assume the type of this is STRLEN *: */ | |
411 | STRLEN * cop_warnings; /* lexical warnings bitmask */ | |
412 | /* compile time state of %^H. See the comment in op.c for how this is | |
413 | used to recreate a hash to return from caller. */ | |
20439bc7 | 414 | COPHH * cop_hints_hash; |
79072805 LW |
415 | }; |
416 | ||
57843af0 | 417 | #ifdef USE_ITHREADS |
1dc74fdb FC |
418 | # define CopFILE(c) ((c)->cop_file) |
419 | # define CopFILEGV(c) (CopFILE(c) \ | |
420 | ? gv_fetchfile(CopFILE(c)) : NULL) | |
421 | ||
422 | # ifdef NETWARE | |
423 | # define CopFILE_set(c,pv) ((c)->cop_file = savepv(pv)) | |
d166b3ad | 424 | # define CopFILE_setn(c,pv,l) ((c)->cop_file = savepvn((pv),(l))) |
1dc74fdb FC |
425 | # else |
426 | # define CopFILE_set(c,pv) ((c)->cop_file = savesharedpv(pv)) | |
427 | # define CopFILE_setn(c,pv,l) ((c)->cop_file = savesharedpvn((pv),(l))) | |
428 | # endif | |
429 | ||
430 | # define CopFILESV(c) (CopFILE(c) \ | |
431 | ? GvSV(gv_fetchfile(CopFILE(c))) : NULL) | |
432 | # define CopFILEAV(c) (CopFILE(c) \ | |
433 | ? GvAV(gv_fetchfile(CopFILE(c))) : NULL) | |
434 | # define CopFILEAVx(c) (assert_(CopFILE(c)) \ | |
435 | GvAV(gv_fetchfile(CopFILE(c)))) | |
083fcd59 | 436 | |
d4d03940 FC |
437 | # define CopSTASH(c) PL_stashpad[(c)->cop_stashoff] |
438 | # define CopSTASH_set(c,hv) ((c)->cop_stashoff = (hv) \ | |
439 | ? alloccopstash(hv) \ | |
440 | : 0) | |
1dc74fdb FC |
441 | # ifdef NETWARE |
442 | # define CopFILE_free(c) SAVECOPFILE_FREE(c) | |
443 | # else | |
444 | # define CopFILE_free(c) (PerlMemShared_free(CopFILE(c)),(CopFILE(c) = NULL)) | |
445 | # endif | |
57843af0 GS |
446 | #else |
447 | # define CopFILEGV(c) ((c)->cop_filegv) | |
f4dd75d9 | 448 | # define CopFILEGV_set(c,gv) ((c)->cop_filegv = (GV*)SvREFCNT_inc(gv)) |
1dc74fdb FC |
449 | # define CopFILE_set(c,pv) CopFILEGV_set((c), gv_fetchfile(pv)) |
450 | # define CopFILE_setn(c,pv,l) CopFILEGV_set((c), gv_fetchfile_flags((pv),(l),0)) | |
451 | # define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : NULL) | |
452 | # define CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : NULL) | |
453 | # ifdef DEBUGGING | |
454 | # define CopFILEAVx(c) (assert(CopFILEGV(c)), GvAV(CopFILEGV(c))) | |
455 | # else | |
456 | # define CopFILEAVx(c) (GvAV(CopFILEGV(c))) | |
457 | # endif | |
458 | # define CopFILE(c) (CopFILEGV(c) \ | |
459 | ? GvNAME(CopFILEGV(c))+2 : NULL) | |
57843af0 | 460 | # define CopSTASH(c) ((c)->cop_stash) |
f4dd75d9 | 461 | # define CopSTASH_set(c,hv) ((c)->cop_stash = (hv)) |
a0714e2c | 462 | # define CopFILE_free(c) (SvREFCNT_dec(CopFILEGV(c)),(CopFILEGV(c) = NULL)) |
05ec9bb3 | 463 | |
57843af0 | 464 | #endif /* USE_ITHREADS */ |
20439bc7 | 465 | |
d4d03940 FC |
466 | #define CopSTASHPV(c) (CopSTASH(c) ? HvNAME_get(CopSTASH(c)) : NULL) |
467 | /* cop_stash is not refcounted */ | |
468 | #define CopSTASHPV_set(c,pv) CopSTASH_set((c), gv_stashpv(pv,GV_ADD)) | |
469 | #define CopSTASH_eq(c,hv) (CopSTASH(c) == (hv)) | |
d4d03940 | 470 | |
20439bc7 Z |
471 | #define CopHINTHASH_get(c) ((COPHH*)((c)->cop_hints_hash)) |
472 | #define CopHINTHASH_set(c,h) ((c)->cop_hints_hash = (h)) | |
473 | ||
474 | /* | |
475 | =head1 COP Hint Reading | |
476 | */ | |
477 | ||
478 | /* | |
479 | =for apidoc Am|SV *|cop_hints_fetch_pvn|const COP *cop|const char *keypv|STRLEN keylen|U32 hash|U32 flags | |
480 | ||
2d7f6611 KW |
481 | Look up the hint entry in the cop C<cop> with the key specified by |
482 | C<keypv> and C<keylen>. If C<flags> has the C<COPHH_KEY_UTF8> bit set, | |
20439bc7 | 483 | the key octets are interpreted as UTF-8, otherwise they are interpreted |
2d7f6611 | 484 | as Latin-1. C<hash> is a precomputed hash of the key string, or zero if |
20439bc7 Z |
485 | it has not been precomputed. Returns a mortal scalar copy of the value |
486 | associated with the key, or C<&PL_sv_placeholder> if there is no value | |
487 | associated with the key. | |
488 | ||
489 | =cut | |
490 | */ | |
491 | ||
492 | #define cop_hints_fetch_pvn(cop, keypv, keylen, hash, flags) \ | |
493 | cophh_fetch_pvn(CopHINTHASH_get(cop), keypv, keylen, hash, flags) | |
494 | ||
495 | /* | |
3bb9fd01 | 496 | =for apidoc Am|SV *|cop_hints_fetch_pvs|const COP *cop|"key"|U32 flags |
20439bc7 | 497 | |
1568d13a | 498 | Like L</cop_hints_fetch_pvn>, but takes a literal string |
0c395ea5 | 499 | instead of a string/length pair, and no precomputed hash. |
20439bc7 Z |
500 | |
501 | =cut | |
502 | */ | |
503 | ||
504 | #define cop_hints_fetch_pvs(cop, key, flags) \ | |
505 | cophh_fetch_pvs(CopHINTHASH_get(cop), key, flags) | |
506 | ||
507 | /* | |
508 | =for apidoc Am|SV *|cop_hints_fetch_pv|const COP *cop|const char *key|U32 hash|U32 flags | |
509 | ||
510 | Like L</cop_hints_fetch_pvn>, but takes a nul-terminated string instead | |
511 | of a string/length pair. | |
512 | ||
513 | =cut | |
514 | */ | |
515 | ||
516 | #define cop_hints_fetch_pv(cop, key, hash, flags) \ | |
517 | cophh_fetch_pv(CopHINTHASH_get(cop), key, hash, flags) | |
518 | ||
519 | /* | |
520 | =for apidoc Am|SV *|cop_hints_fetch_sv|const COP *cop|SV *key|U32 hash|U32 flags | |
521 | ||
522 | Like L</cop_hints_fetch_pvn>, but takes a Perl scalar instead of a | |
523 | string/length pair. | |
524 | ||
525 | =cut | |
526 | */ | |
527 | ||
528 | #define cop_hints_fetch_sv(cop, key, hash, flags) \ | |
529 | cophh_fetch_sv(CopHINTHASH_get(cop), key, hash, flags) | |
530 | ||
531 | /* | |
532 | =for apidoc Am|HV *|cop_hints_2hv|const COP *cop|U32 flags | |
533 | ||
534 | Generates and returns a standard Perl hash representing the full set of | |
2d7f6611 | 535 | hint entries in the cop C<cop>. C<flags> is currently unused and must |
20439bc7 Z |
536 | be zero. |
537 | ||
538 | =cut | |
539 | */ | |
540 | ||
541 | #define cop_hints_2hv(cop, flags) \ | |
542 | cophh_2hv(CopHINTHASH_get(cop), flags) | |
543 | ||
33d29c13 KW |
544 | /* |
545 | =for apidoc Am|const char *|CopLABEL|COP *const cop | |
546 | ||
547 | Returns the label attached to a cop. | |
548 | ||
549 | =for apidoc Am|const char *|CopLABEL_len|COP *const cop|STRLEN *len | |
550 | ||
551 | Returns the label attached to a cop, and stores its length in bytes into | |
552 | C<*len>. | |
553 | ||
554 | =for apidoc Am|const char *|CopLABEL_len_flags|COP *const cop|STRLEN *len|U32 *flags | |
555 | ||
556 | Returns the label attached to a cop, and stores its length in bytes into | |
557 | C<*len>. Upon return, C<*flags> will be set to either C<SVf_UTF8> or 0. | |
558 | ||
559 | =cut | |
560 | */ | |
561 | ||
aebc0cbe | 562 | #define CopLABEL(c) Perl_cop_fetch_label(aTHX_ (c), NULL, NULL) |
5db1eb8d BF |
563 | #define CopLABEL_len(c,len) Perl_cop_fetch_label(aTHX_ (c), len, NULL) |
564 | #define CopLABEL_len_flags(c,len,flags) Perl_cop_fetch_label(aTHX_ (c), len, flags) | |
dca6062a | 565 | #define CopLABEL_alloc(pv) ((pv)?savepv(pv):NULL) |
57843af0 | 566 | |
ed094faf | 567 | #define CopSTASH_ne(c,hv) (!CopSTASH_eq(c,hv)) |
cc49e20b | 568 | #define CopLINE(c) ((c)->cop_line) |
57843af0 GS |
569 | #define CopLINE_inc(c) (++CopLINE(c)) |
570 | #define CopLINE_dec(c) (--CopLINE(c)) | |
571 | #define CopLINE_set(c,l) (CopLINE(c) = (l)) | |
cc49e20b | 572 | |
248c2a4d | 573 | /* OutCopFILE() is CopFILE for output (caller, die, warn, etc.) */ |
e37778c2 | 574 | #define OutCopFILE(c) CopFILE(c) |
248c2a4d | 575 | |
d5ec2987 | 576 | #define CopHINTS_get(c) ((c)->cop_hints + 0) |
623e6609 | 577 | #define CopHINTS_set(c, h) STMT_START { \ |
d5ec2987 | 578 | (c)->cop_hints = (h); \ |
623e6609 NC |
579 | } STMT_END |
580 | ||
79072805 LW |
581 | /* |
582 | * Here we have some enormously heavy (or at least ponderous) wizardry. | |
583 | */ | |
584 | ||
585 | /* subroutine context */ | |
586 | struct block_sub { | |
f9c764c5 | 587 | OP * retop; /* op to execute on exit from sub */ |
5b6f7443 | 588 | I32 old_cxsubix; /* previous value of si_cxsubix */ |
adcbf118 | 589 | /* Above here is the same for sub, format and eval. */ |
9aa350eb | 590 | PAD *prevcomppad; /* the caller's PL_comppad */ |
8e663997 | 591 | CV * cv; |
f9c764c5 | 592 | /* Above here is the same for sub and format. */ |
bb172083 | 593 | I32 olddepth; |
3073d04f | 594 | AV *savearray; |
f9c764c5 NC |
595 | }; |
596 | ||
597 | ||
598 | /* format context */ | |
599 | struct block_format { | |
f39bc417 | 600 | OP * retop; /* op to execute on exit from sub */ |
5b6f7443 | 601 | I32 old_cxsubix; /* previous value of si_cxsubix */ |
adcbf118 | 602 | /* Above here is the same for sub, format and eval. */ |
9aa350eb | 603 | PAD *prevcomppad; /* the caller's PL_comppad */ |
8e663997 | 604 | CV * cv; |
f9c764c5 NC |
605 | /* Above here is the same for sub and format. */ |
606 | GV * gv; | |
607 | GV * dfoutgv; | |
79072805 LW |
608 | }; |
609 | ||
4ebe6e95 DM |
610 | /* return a pointer to the current context */ |
611 | ||
612 | #define CX_CUR() (&cxstack[cxstack_ix]) | |
613 | ||
dfe0f39b DM |
614 | /* free all savestack items back to the watermark of the specified context */ |
615 | ||
e992140c | 616 | #define CX_LEAVE_SCOPE(cx) LEAVE_SCOPE(cx->blk_oldsaveix) |
dfe0f39b | 617 | |
5da525e9 DM |
618 | #ifdef DEBUGGING |
619 | /* on debugging builds, poison cx afterwards so we know no code | |
620 | * uses it - because after doing cxstack_ix--, any ties, exceptions etc | |
621 | * may overwrite the current stack frame */ | |
622 | # define CX_POP(cx) \ | |
4ebe6e95 | 623 | assert(CX_CUR() == cx); \ |
5da525e9 DM |
624 | cxstack_ix--; \ |
625 | cx = NULL; | |
626 | #else | |
627 | # define CX_POP(cx) cxstack_ix--; | |
628 | #endif | |
629 | ||
630 | ||
b36bdeca | 631 | /* base for the next two macros. Don't use directly. |
d6911e1b DM |
632 | * The context frame holds a reference to the CV so that it can't be |
633 | * freed while we're executing it */ | |
b36bdeca | 634 | |
b36bdeca | 635 | |
490576d1 | 636 | #define CX_PUSHSUB_GET_LVALUE_MASK(func) \ |
777d9014 FC |
637 | /* If the context is indeterminate, then only the lvalue */ \ |
638 | /* flags that the caller also has are applicable. */ \ | |
4587c532 | 639 | ( \ |
777d9014 FC |
640 | (PL_op->op_flags & OPf_WANT) \ |
641 | ? OPpENTERSUB_LVAL_MASK \ | |
642 | : !(PL_op->op_private & OPpENTERSUB_LVAL_MASK) \ | |
4587c532 FC |
643 | ? 0 : (U8)func(aTHX) \ |
644 | ) | |
645 | ||
fad386cb | 646 | /* Restore old @_ */ |
b405d38b | 647 | #define CX_POP_SAVEARRAY(cx) \ |
6d4ff0d2 | 648 | STMT_START { \ |
f2b9631d | 649 | AV *cx_pop_savearray_av = GvAV(PL_defgv); \ |
a8bba7fa | 650 | GvAV(PL_defgv) = cx->blk_sub.savearray; \ |
656457d0 | 651 | cx->blk_sub.savearray = NULL; \ |
f2b9631d | 652 | SvREFCNT_dec(cx_pop_savearray_av); \ |
6d4ff0d2 | 653 | } STMT_END |
6d4ff0d2 | 654 | |
ecf8e9dd | 655 | /* junk in @_ spells trouble when cloning CVs and in pp_caller(), so don't |
8e09340b GS |
656 | * leave any (a fast av_clear(ary), basically) */ |
657 | #define CLEAR_ARGARRAY(ary) \ | |
658 | STMT_START { \ | |
659 | AvMAX(ary) += AvARRAY(ary) - AvALLOC(ary); \ | |
9c6bc640 | 660 | AvARRAY(ary) = AvALLOC(ary); \ |
8e09340b GS |
661 | AvFILLp(ary) = -1; \ |
662 | } STMT_END | |
7766f137 | 663 | |
7e27c4a5 | 664 | |
79072805 LW |
665 | /* eval context */ |
666 | struct block_eval { | |
8e663997 | 667 | OP * retop; /* op to execute on exit from eval */ |
5b6f7443 | 668 | I32 old_cxsubix; /* previous value of si_cxsubix */ |
8e663997 | 669 | /* Above here is the same for sub, format and eval. */ |
0f79a09d | 670 | SV * old_namesv; |
79072805 | 671 | OP * old_eval_root; |
748a9306 | 672 | SV * cur_text; |
2090ab20 | 673 | CV * cv; |
abd70938 | 674 | JMPENV * cur_top_env; /* value of PL_top_env when eval CX created */ |
79072805 LW |
675 | }; |
676 | ||
17347a51 NC |
677 | /* If we ever need more than 512 op types, change the shift from 7. |
678 | blku_gimme is actually also only 2 bits, so could be merged with something. | |
679 | */ | |
680 | ||
4c57ced5 DM |
681 | /* blk_u16 bit usage for eval contexts: */ |
682 | ||
683 | #define CxOLD_IN_EVAL(cx) (((cx)->blk_u16) & 0x3F) /* saved PL in_eval */ | |
684 | #define CxEVAL_TXT_REFCNTED(cx) (((cx)->blk_u16) & 0x40) /* cur_text rc++ */ | |
685 | #define CxOLD_OP_TYPE(cx) (((cx)->blk_u16) >> 7) /* type of eval op */ | |
85a64632 | 686 | |
79072805 LW |
687 | /* loop context */ |
688 | struct block_loop { | |
022eaa24 | 689 | LOOP * my_op; /* My op, that contains redo, next and last ops. */ |
df530c37 | 690 | union { /* different ways of locating the iteration variable */ |
b52de964 DM |
691 | SV **svp; /* for lexicals: address of pad slot */ |
692 | GV *gv; /* for package vars */ | |
df530c37 | 693 | } itervar_u; |
f0bb9bf7 | 694 | SV *itersave; /* the original iteration var */ |
493b0a3c | 695 | union { |
93661e56 DM |
696 | struct { /* CXt_LOOP_ARY, C<for (@ary)> */ |
697 | AV *ary; /* array being iterated over */ | |
698 | IV ix; /* index relative to base of array */ | |
d01136d6 | 699 | } ary; |
93661e56 DM |
700 | struct { /* CXt_LOOP_LIST, C<for (list)> */ |
701 | I32 basesp; /* first element of list on stack */ | |
702 | IV ix; /* index relative to basesp */ | |
703 | } stack; | |
704 | struct { /* CXt_LOOP_LAZYIV, C<for (1..9)> */ | |
d01136d6 BS |
705 | IV cur; |
706 | IV end; | |
707 | } lazyiv; | |
93661e56 | 708 | struct { /* CXt_LOOP_LAZYSV C<for ('a'..'z')> */ |
d01136d6 BS |
709 | SV * cur; |
710 | SV * end; /* maxiumum value (or minimum in reverse) */ | |
711 | } lazysv; | |
712 | } state_u; | |
7766f137 | 713 | #ifdef USE_ITHREADS |
b52de964 | 714 | PAD *oldcomppad; /* needed to map itervar_u.svp during thread clone */ |
f83b46a0 | 715 | #endif |
b52de964 | 716 | }; |
f83b46a0 | 717 | |
9af0df0b DM |
718 | #define CxITERVAR(c) \ |
719 | (CxPADLOOP(c) \ | |
720 | ? (c)->blk_loop.itervar_u.svp \ | |
721 | : ((c)->cx_type & CXp_FOR_GV) \ | |
722 | ? &GvSV((c)->blk_loop.itervar_u.gv) \ | |
723 | : (SV **)&(c)->blk_loop.itervar_u.gv) | |
f83b46a0 | 724 | |
b1cf8b36 | 725 | #define CxLABEL(c) (0 + CopLABEL((c)->blk_oldcop)) |
5db1eb8d BF |
726 | #define CxLABEL_len(c,len) (0 + CopLABEL_len((c)->blk_oldcop, len)) |
727 | #define CxLABEL_len_flags(c,len,flags) (0 + CopLABEL_len_flags((c)->blk_oldcop, len, flags)) | |
ae423868 | 728 | #define CxHASARGS(c) (((c)->cx_type & CXp_HASARGS) == CXp_HASARGS) |
d9203e03 DM |
729 | |
730 | /* CxLVAL(): the lval flags of the call site: the relevant flag bits from | |
731 | * the op_private field of the calling pp_entersub (or its caller's caller | |
732 | * if the caller's lvalue context isn't known): | |
733 | * OPpLVAL_INTRO: sub used in lvalue context, e.g. f() = 1; | |
734 | * OPpENTERSUB_INARGS (in conjunction with OPpLVAL_INTRO): the | |
735 | * function is being used as a sub arg or as a referent, e.g. | |
736 | * g(...,f(),...) or $r = \f() | |
737 | * OPpDEREF: 2-bit mask indicating e.g. f()->[0]. | |
738 | * Note the contrast with CvLVALUE(), which is a property of the sub | |
739 | * rather than the call site. | |
740 | */ | |
1956db7e | 741 | #define CxLVAL(c) (0 + ((c)->blk_u16 & 0xff)) |
1956db7e | 742 | |
7766f137 | 743 | |
79072805 | 744 | |
7896dde7 Z |
745 | /* given/when context */ |
746 | struct block_givwhen { | |
0d863452 | 747 | OP *leave_op; |
7896dde7 | 748 | SV *defsv_save; /* the original $_ */ |
0d863452 RH |
749 | }; |
750 | ||
0d863452 | 751 | |
c5369ccc | 752 | |
79072805 LW |
753 | /* context common to subroutines, evals and loops */ |
754 | struct block { | |
446d0787 | 755 | U8 blku_type; /* what kind of context this is */ |
2e0df0e8 | 756 | U8 blku_gimme; /* is this block running in list context? */ |
17347a51 | 757 | U16 blku_u16; /* used by block_sub and block_eval (so far) */ |
e992140c DM |
758 | I32 blku_oldsaveix; /* saved PL_savestack_ix */ |
759 | /* all the fields above must be aligned with same-sized fields as sbu */ | |
1bef65a2 | 760 | I32 blku_oldsp; /* current sp floor: where nextstate pops to */ |
79072805 | 761 | I32 blku_oldmarksp; /* mark stack index */ |
f284fecd | 762 | COP * blku_oldcop; /* old curcop pointer */ |
79072805 | 763 | PMOP * blku_oldpm; /* values of pattern match vars */ |
bb3300d1 | 764 | SSize_t blku_old_tmpsfloor; /* saved PL_tmps_floor */ |
f284fecd | 765 | I32 blku_oldscopesp; /* scope stack index */ |
79072805 LW |
766 | |
767 | union { | |
768 | struct block_sub blku_sub; | |
f9c764c5 | 769 | struct block_format blku_format; |
79072805 LW |
770 | struct block_eval blku_eval; |
771 | struct block_loop blku_loop; | |
7896dde7 | 772 | struct block_givwhen blku_givwhen; |
79072805 LW |
773 | } blk_u; |
774 | }; | |
775 | #define blk_oldsp cx_u.cx_blk.blku_oldsp | |
776 | #define blk_oldcop cx_u.cx_blk.blku_oldcop | |
79072805 LW |
777 | #define blk_oldmarksp cx_u.cx_blk.blku_oldmarksp |
778 | #define blk_oldscopesp cx_u.cx_blk.blku_oldscopesp | |
779 | #define blk_oldpm cx_u.cx_blk.blku_oldpm | |
780 | #define blk_gimme cx_u.cx_blk.blku_gimme | |
446d0787 | 781 | #define blk_u16 cx_u.cx_blk.blku_u16 |
e992140c | 782 | #define blk_oldsaveix cx_u.cx_blk.blku_oldsaveix |
ce8bb8d8 | 783 | #define blk_old_tmpsfloor cx_u.cx_blk.blku_old_tmpsfloor |
79072805 | 784 | #define blk_sub cx_u.cx_blk.blk_u.blku_sub |
f9c764c5 | 785 | #define blk_format cx_u.cx_blk.blk_u.blku_format |
79072805 LW |
786 | #define blk_eval cx_u.cx_blk.blk_u.blku_eval |
787 | #define blk_loop cx_u.cx_blk.blk_u.blku_loop | |
7896dde7 | 788 | #define blk_givwhen cx_u.cx_blk.blk_u.blku_givwhen |
79072805 | 789 | |
5e691bc6 | 790 | #define CX_DEBUG(cx, action) \ |
d9f81b50 | 791 | DEBUG_l( \ |
bb3300d1 | 792 | Perl_deb(aTHX_ "CX %ld %s %s (scope %ld,%ld) (save %ld,%ld) at %s:%d\n",\ |
1c98cc53 DM |
793 | (long)cxstack_ix, \ |
794 | action, \ | |
5e691bc6 | 795 | PL_block_type[CxTYPE(cx)], \ |
1c98cc53 | 796 | (long)PL_scopestack_ix, \ |
5e691bc6 | 797 | (long)(cx->blk_oldscopesp), \ |
bb3300d1 | 798 | (long)PL_savestack_ix, \ |
5e691bc6 | 799 | (long)(cx->blk_oldsaveix), \ |
d9f81b50 | 800 | __FILE__, __LINE__)); |
1c98cc53 | 801 | |
ed8ff0f3 | 802 | |
79072805 LW |
803 | |
804 | /* substitution context */ | |
805 | struct subst { | |
e992140c | 806 | U8 sbu_type; /* same as blku_type */ |
1ed74d04 | 807 | U8 sbu_rflags; |
e992140c DM |
808 | U16 sbu_rxtainted; |
809 | I32 sbu_oldsaveix; /* same as blku_oldsaveix */ | |
a7f94955 | 810 | /* all the fields above must be aligned with same-sized fields as blk_u */ |
3c6ef0a5 FC |
811 | SSize_t sbu_iters; |
812 | SSize_t sbu_maxiters; | |
79072805 LW |
813 | char * sbu_orig; |
814 | SV * sbu_dstr; | |
815 | SV * sbu_targ; | |
816 | char * sbu_s; | |
817 | char * sbu_m; | |
818 | char * sbu_strend; | |
c90c0ff4 | 819 | void * sbu_rxres; |
c07a80fd | 820 | REGEXP * sbu_rx; |
79072805 LW |
821 | }; |
822 | #define sb_iters cx_u.cx_subst.sbu_iters | |
823 | #define sb_maxiters cx_u.cx_subst.sbu_maxiters | |
22e551b9 | 824 | #define sb_rflags cx_u.cx_subst.sbu_rflags |
71be2cbc | 825 | #define sb_rxtainted cx_u.cx_subst.sbu_rxtainted |
79072805 LW |
826 | #define sb_orig cx_u.cx_subst.sbu_orig |
827 | #define sb_dstr cx_u.cx_subst.sbu_dstr | |
828 | #define sb_targ cx_u.cx_subst.sbu_targ | |
829 | #define sb_s cx_u.cx_subst.sbu_s | |
830 | #define sb_m cx_u.cx_subst.sbu_m | |
831 | #define sb_strend cx_u.cx_subst.sbu_strend | |
c90c0ff4 | 832 | #define sb_rxres cx_u.cx_subst.sbu_rxres |
c07a80fd | 833 | #define sb_rx cx_u.cx_subst.sbu_rx |
79072805 | 834 | |
9c105995 | 835 | #ifdef PERL_CORE |
490576d1 | 836 | # define CX_PUSHSUBST(cx) CXINC, cx = CX_CUR(), \ |
e992140c | 837 | cx->blk_oldsaveix = oldsave, \ |
79072805 LW |
838 | cx->sb_iters = iters, \ |
839 | cx->sb_maxiters = maxiters, \ | |
22e551b9 | 840 | cx->sb_rflags = r_flags, \ |
71be2cbc | 841 | cx->sb_rxtainted = rxtainted, \ |
79072805 LW |
842 | cx->sb_orig = orig, \ |
843 | cx->sb_dstr = dstr, \ | |
844 | cx->sb_targ = targ, \ | |
845 | cx->sb_s = s, \ | |
846 | cx->sb_m = m, \ | |
847 | cx->sb_strend = strend, \ | |
4608196e | 848 | cx->sb_rxres = NULL, \ |
c07a80fd | 849 | cx->sb_rx = rx, \ |
1ed74d04 | 850 | cx->cx_type = CXt_SUBST | (once ? CXp_ONCE : 0); \ |
e22ae1e2 | 851 | rxres_save(&cx->sb_rxres, rx); \ |
cf69025f TC |
852 | (void)ReREFCNT_inc(rx); \ |
853 | SvREFCNT_inc_void_NN(targ) | |
79072805 | 854 | |
b405d38b | 855 | # define CX_POPSUBST(cx) \ |
77189b8c DM |
856 | STMT_START { \ |
857 | REGEXP *re; \ | |
e4592eb4 | 858 | assert(CxTYPE(cx) == CXt_SUBST); \ |
e22ae1e2 | 859 | rxres_free(&cx->sb_rxres); \ |
77189b8c DM |
860 | re = cx->sb_rx; \ |
861 | cx->sb_rx = NULL; \ | |
862 | ReREFCNT_dec(re); \ | |
863 | SvREFCNT_dec_NN(cx->sb_targ); \ | |
864 | } STMT_END | |
9c105995 NC |
865 | #endif |
866 | ||
867 | #define CxONCE(cx) ((cx)->cx_type & CXp_ONCE) | |
79072805 LW |
868 | |
869 | struct context { | |
79072805 LW |
870 | union { |
871 | struct block cx_blk; | |
872 | struct subst cx_subst; | |
873 | } cx_u; | |
874 | }; | |
2e0df0e8 | 875 | #define cx_type cx_u.cx_subst.sbu_type |
6b35e009 | 876 | |
76753e7f NC |
877 | /* If you re-order these, there is also an array of uppercase names in perl.h |
878 | and a static array of context names in pp_ctl.c */ | |
3701055e | 879 | #define CXTYPEMASK 0xf |
79646418 | 880 | #define CXt_NULL 0 /* currently only used for sort BLOCK */ |
7896dde7 | 881 | #define CXt_WHEN 1 |
76753e7f | 882 | #define CXt_BLOCK 2 |
7896dde7 Z |
883 | /* When micro-optimising :-) keep GIVEN next to the LOOPs, as these 5 share a |
884 | jump table in pp_ctl.c | |
885 | The first 4 don't have a 'case' in at least one switch statement in pp_ctl.c | |
886 | */ | |
887 | #define CXt_GIVEN 3 | |
888 | ||
889 | /* be careful of the ordering of these five. Macros like CxTYPE_is_LOOP, | |
93661e56 | 890 | * CxFOREACH compare ranges */ |
c349b9a0 DM |
891 | #define CXt_LOOP_ARY 4 /* for (@ary) { ...; } */ |
892 | #define CXt_LOOP_LAZYSV 5 /* for ('a'..'z') { ...; } */ | |
893 | #define CXt_LOOP_LAZYIV 6 /* for (1..9) { ...; } */ | |
894 | #define CXt_LOOP_LIST 7 /* for (1,2,3) { ...; } */ | |
895 | #define CXt_LOOP_PLAIN 8 /* while (...) { ...; } | |
896 | or plain block { ...; } */ | |
93661e56 DM |
897 | #define CXt_SUB 9 |
898 | #define CXt_FORMAT 10 | |
899 | #define CXt_EVAL 11 | |
900 | #define CXt_SUBST 12 | |
76753e7f | 901 | /* SUBST doesn't feature in all switch statements. */ |
79072805 | 902 | |
ae423868 | 903 | /* private flags for CXt_SUB and CXt_FORMAT */ |
79646418 DM |
904 | #define CXp_MULTICALL 0x10 /* part of a multicall (so don't tear down |
905 | context on exit). (not CXt_FORMAT) */ | |
1f27d788 | 906 | #define CXp_HASARGS 0x20 |
b0065247 DM |
907 | #define CXp_SUB_RE 0x40 /* code called within regex, i.e. (?{}) */ |
908 | #define CXp_SUB_RE_FAKE 0x80 /* fake sub CX for (?{}) in current scope */ | |
ae423868 | 909 | |
6b35e009 | 910 | /* private flags for CXt_EVAL */ |
1f27d788 NC |
911 | #define CXp_REAL 0x20 /* truly eval'', not a lookalike */ |
912 | #define CXp_TRYBLOCK 0x40 /* eval{}, not eval'' or similar */ | |
6b35e009 | 913 | |
7766f137 | 914 | /* private flags for CXt_LOOP */ |
28e0cf42 | 915 | |
7896dde7 Z |
916 | /* this is only set in conjunction with CXp_FOR_GV */ |
917 | #define CXp_FOR_DEF 0x10 /* foreach using $_ */ | |
28e0cf42 | 918 | /* these 3 are mutually exclusive */ |
d39c26a6 | 919 | #define CXp_FOR_LVREF 0x20 /* foreach using \$var */ |
9af0df0b DM |
920 | #define CXp_FOR_GV 0x40 /* foreach using package var */ |
921 | #define CXp_FOR_PAD 0x80 /* foreach using lexical var */ | |
28e0cf42 | 922 | |
9af0df0b | 923 | #define CxPADLOOP(c) ((c)->cx_type & CXp_FOR_PAD) |
e846cb92 | 924 | |
1ed74d04 NC |
925 | /* private flags for CXt_SUBST */ |
926 | #define CXp_ONCE 0x10 /* What was sbu_once in struct subst */ | |
7766f137 | 927 | |
6b35e009 | 928 | #define CxTYPE(c) ((c)->cx_type & CXTYPEMASK) |
7896dde7 | 929 | #define CxTYPE_is_LOOP(c) ( CxTYPE(cx) >= CXt_LOOP_ARY \ |
113ebcf5 | 930 | && CxTYPE(cx) <= CXt_LOOP_PLAIN) |
79646418 | 931 | #define CxMULTICALL(c) ((c)->cx_type & CXp_MULTICALL) |
0588a150 | 932 | #define CxREALEVAL(c) (((c)->cx_type & (CXTYPEMASK|CXp_REAL)) \ |
7766f137 | 933 | == (CXt_EVAL|CXp_REAL)) |
0588a150 | 934 | #define CxTRYBLOCK(c) (((c)->cx_type & (CXTYPEMASK|CXp_TRYBLOCK)) \ |
1d76a5c3 | 935 | == (CXt_EVAL|CXp_TRYBLOCK)) |
113ebcf5 DM |
936 | #define CxFOREACH(c) ( CxTYPE(cx) >= CXt_LOOP_ARY \ |
937 | && CxTYPE(cx) <= CXt_LOOP_LIST) | |
6b35e009 | 938 | |
109bf713 | 939 | #define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc())) |
79072805 | 940 | |
ccfc67b7 JH |
941 | /* |
942 | =head1 "Gimme" Values | |
943 | */ | |
954c1994 GS |
944 | |
945 | /* | |
78342678 | 946 | =for apidoc AmnU||G_SCALAR |
fbe13c60 | 947 | Used to indicate scalar context. See C<L</GIMME_V>>, C<L</GIMME>>, and |
954c1994 GS |
948 | L<perlcall>. |
949 | ||
78342678 | 950 | =for apidoc AmnU||G_ARRAY |
fbe13c60 | 951 | Used to indicate list context. See C<L</GIMME_V>>, C<L</GIMME>> and |
954c1994 GS |
952 | L<perlcall>. |
953 | ||
78342678 | 954 | =for apidoc AmnU||G_VOID |
fbe13c60 | 955 | Used to indicate void context. See C<L</GIMME_V>> and L<perlcall>. |
954c1994 | 956 | |
78342678 | 957 | =for apidoc AmnU||G_DISCARD |
954c1994 GS |
958 | Indicates that arguments returned from a callback should be discarded. See |
959 | L<perlcall>. | |
960 | ||
78342678 | 961 | =for apidoc AmnU||G_EVAL |
954c1994 GS |
962 | |
963 | Used to force a Perl C<eval> wrapper around a callback. See | |
964 | L<perlcall>. | |
965 | ||
78342678 | 966 | =for apidoc AmnU||G_NOARGS |
954c1994 GS |
967 | |
968 | Indicates that no arguments are being sent to a callback. See | |
969 | L<perlcall>. | |
970 | ||
971 | =cut | |
972 | */ | |
973 | ||
2f8edad0 NC |
974 | #define G_SCALAR 2 |
975 | #define G_ARRAY 3 | |
976 | #define G_VOID 1 | |
977 | #define G_WANT 3 | |
79072805 | 978 | |
864dbfa3 | 979 | /* extra flags for Perl_call_* routines */ |
66ff4fb5 | 980 | #define G_DISCARD 0x4 /* Call FREETMPS. |
b54b4831 NC |
981 | Don't change this without consulting the |
982 | hash actions codes defined in hv.h */ | |
66ff4fb5 TC |
983 | #define G_EVAL 0x8 /* Assume eval {} around subroutine call. */ |
984 | #define G_NOARGS 0x10 /* Don't construct a @_ array. */ | |
985 | #define G_KEEPERR 0x20 /* Warn for errors, don't overwrite $@ */ | |
986 | #define G_NODEBUG 0x40 /* Disable debugging at toplevel. */ | |
987 | #define G_METHOD 0x80 /* Calling method. */ | |
988 | #define G_FAKINGEVAL 0x100 /* Faking an eval context for call_sv or | |
edb2152a | 989 | fold_constants. */ |
66ff4fb5 | 990 | #define G_UNDEF_FILL 0x200 /* Fill the stack with &PL_sv_undef |
67549bd2 NC |
991 | A special case for UNSHIFT in |
992 | Perl_magic_methcall(). */ | |
66ff4fb5 | 993 | #define G_WRITING_TO_STDERR 0x400 /* Perl_write_to_stderr() is calling |
d1d7a15d | 994 | Perl_magic_methcall(). */ |
66ff4fb5 TC |
995 | #define G_RE_REPARSING 0x800 /* compiling a run-time /(?{..})/ */ |
996 | #define G_METHOD_NAMED 0x1000 /* calling named method, eg without :: or ' */ | |
997 | #define G_RETHROW 0x2000 /* eval_sv(): re-throw any error */ | |
e336de0d | 998 | |
faef0170 HS |
999 | /* flag bits for PL_in_eval */ |
1000 | #define EVAL_NULL 0 /* not in an eval */ | |
1001 | #define EVAL_INEVAL 1 /* some enclosing scope is an eval */ | |
1002 | #define EVAL_WARNONLY 2 /* used by yywarn() when calling yyerror() */ | |
864dbfa3 | 1003 | #define EVAL_KEEPERR 4 /* set by Perl_call_sv if G_KEEPERR */ |
6dc8a9e4 | 1004 | #define EVAL_INREQUIRE 8 /* The code is being required. */ |
a1941760 | 1005 | #define EVAL_RE_REPARSING 0x10 /* eval_sv() called with G_RE_REPARSING */ |
4c57ced5 | 1006 | /* if adding extra bits, make sure they can fit in CxOLD_OP_TYPE() */ |
faef0170 | 1007 | |
e336de0d GS |
1008 | /* Support for switching (stack and block) contexts. |
1009 | * This ensures magic doesn't invalidate local stack and cx pointers. | |
1010 | */ | |
1011 | ||
e788e7d3 GS |
1012 | #define PERLSI_UNKNOWN -1 |
1013 | #define PERLSI_UNDEF 0 | |
1014 | #define PERLSI_MAIN 1 | |
1015 | #define PERLSI_MAGIC 2 | |
1016 | #define PERLSI_SORT 3 | |
1017 | #define PERLSI_SIGNAL 4 | |
1018 | #define PERLSI_OVERLOAD 5 | |
1019 | #define PERLSI_DESTROY 6 | |
1020 | #define PERLSI_WARNHOOK 7 | |
1021 | #define PERLSI_DIEHOOK 8 | |
1022 | #define PERLSI_REQUIRE 9 | |
e1a10f35 | 1023 | #define PERLSI_MULTICALL 10 |
e336de0d GS |
1024 | |
1025 | struct stackinfo { | |
1026 | AV * si_stack; /* stack for current runlevel */ | |
1027 | PERL_CONTEXT * si_cxstack; /* context stack for runlevel */ | |
9bd87817 NC |
1028 | struct stackinfo * si_prev; |
1029 | struct stackinfo * si_next; | |
e336de0d GS |
1030 | I32 si_cxix; /* current context index */ |
1031 | I32 si_cxmax; /* maximum allocated index */ | |
5b6f7443 | 1032 | I32 si_cxsubix; /* topmost sub/eval/format */ |
e336de0d | 1033 | I32 si_type; /* type of runlevel */ |
ce2f7c3b | 1034 | I32 si_markoff; /* offset where markstack begins for us. |
e336de0d GS |
1035 | * currently used only with DEBUGGING, |
1036 | * but not #ifdef-ed for bincompat */ | |
1fced1a2 | 1037 | #if defined DEBUGGING && !defined DEBUGGING_RE_ONLY |
87058c31 DM |
1038 | /* high water mark: for checking if the stack was correctly extended / |
1039 | * tested for extension by each pp function */ | |
1040 | SSize_t si_stack_hwm; | |
1041 | #endif | |
1042 | ||
e336de0d GS |
1043 | }; |
1044 | ||
1045 | typedef struct stackinfo PERL_SI; | |
1046 | ||
3280af22 NIS |
1047 | #define cxstack (PL_curstackinfo->si_cxstack) |
1048 | #define cxstack_ix (PL_curstackinfo->si_cxix) | |
1049 | #define cxstack_max (PL_curstackinfo->si_cxmax) | |
e336de0d GS |
1050 | |
1051 | #ifdef DEBUGGING | |
ce2f7c3b GS |
1052 | # define SET_MARK_OFFSET \ |
1053 | PL_curstackinfo->si_markoff = PL_markstack_ptr - PL_markstack | |
e336de0d | 1054 | #else |
ce2f7c3b | 1055 | # define SET_MARK_OFFSET NOOP |
e336de0d GS |
1056 | #endif |
1057 | ||
87058c31 | 1058 | #if defined DEBUGGING && !defined DEBUGGING_RE_ONLY |
45d6bfc0 | 1059 | # define PUSHSTACK_INIT_HWM(si) ((si)->si_stack_hwm = 0) |
87058c31 DM |
1060 | #else |
1061 | # define PUSHSTACK_INIT_HWM(si) NOOP | |
1062 | #endif | |
1063 | ||
d3acc0f7 | 1064 | #define PUSHSTACKi(type) \ |
e336de0d | 1065 | STMT_START { \ |
3280af22 | 1066 | PERL_SI *next = PL_curstackinfo->si_next; \ |
1c98cc53 DM |
1067 | DEBUG_l({ \ |
1068 | int i = 0; PERL_SI *p = PL_curstackinfo; \ | |
1069 | while (p) { i++; p = p->si_prev; } \ | |
1070 | Perl_deb(aTHX_ "push STACKINFO %d at %s:%d\n", \ | |
1071 | i, __FILE__, __LINE__);}) \ | |
e336de0d GS |
1072 | if (!next) { \ |
1073 | next = new_stackinfo(32, 2048/sizeof(PERL_CONTEXT) - 1); \ | |
3280af22 NIS |
1074 | next->si_prev = PL_curstackinfo; \ |
1075 | PL_curstackinfo->si_next = next; \ | |
e336de0d GS |
1076 | } \ |
1077 | next->si_type = type; \ | |
1078 | next->si_cxix = -1; \ | |
5b6f7443 | 1079 | next->si_cxsubix = -1; \ |
87058c31 | 1080 | PUSHSTACK_INIT_HWM(next); \ |
e336de0d | 1081 | AvFILLp(next->si_stack) = 0; \ |
3280af22 NIS |
1082 | SWITCHSTACK(PL_curstack,next->si_stack); \ |
1083 | PL_curstackinfo = next; \ | |
ce2f7c3b | 1084 | SET_MARK_OFFSET; \ |
e336de0d GS |
1085 | } STMT_END |
1086 | ||
e788e7d3 | 1087 | #define PUSHSTACK PUSHSTACKi(PERLSI_UNKNOWN) |
d3acc0f7 | 1088 | |
3095d977 GS |
1089 | /* POPSTACK works with PL_stack_sp, so it may need to be bracketed by |
1090 | * PUTBACK/SPAGAIN to flush/refresh any local SP that may be active */ | |
d3acc0f7 | 1091 | #define POPSTACK \ |
e336de0d | 1092 | STMT_START { \ |
39644a26 | 1093 | dSP; \ |
c4420975 | 1094 | PERL_SI * const prev = PL_curstackinfo->si_prev; \ |
1c98cc53 DM |
1095 | DEBUG_l({ \ |
1096 | int i = -1; PERL_SI *p = PL_curstackinfo; \ | |
1097 | while (p) { i++; p = p->si_prev; } \ | |
1098 | Perl_deb(aTHX_ "pop STACKINFO %d at %s:%d\n", \ | |
1099 | i, __FILE__, __LINE__);}) \ | |
e336de0d | 1100 | if (!prev) { \ |
3d04513d | 1101 | Perl_croak_popstack(); \ |
e336de0d | 1102 | } \ |
3280af22 | 1103 | SWITCHSTACK(PL_curstack,prev->si_stack); \ |
e336de0d | 1104 | /* don't free prev here, free them all at the END{} */ \ |
3280af22 | 1105 | PL_curstackinfo = prev; \ |
e336de0d GS |
1106 | } STMT_END |
1107 | ||
1108 | #define POPSTACK_TO(s) \ | |
1109 | STMT_START { \ | |
3280af22 | 1110 | while (PL_curstack != s) { \ |
bac4b2ad | 1111 | dounwind(-1); \ |
d3acc0f7 | 1112 | POPSTACK; \ |
bac4b2ad | 1113 | } \ |
e336de0d | 1114 | } STMT_END |
923e4eb5 | 1115 | |
9d990559 DM |
1116 | #define IN_PERL_COMPILETIME cBOOL(PL_curcop == &PL_compiling) |
1117 | #define IN_PERL_RUNTIME cBOOL(PL_curcop != &PL_compiling) | |
923e4eb5 | 1118 | |
ed8ff0f3 DM |
1119 | |
1120 | ||
1121 | ||
9850bf21 RH |
1122 | /* |
1123 | =head1 Multicall Functions | |
1124 | ||
4e5171e9 | 1125 | =for apidoc Amns||dMULTICALL |
72d33970 | 1126 | Declare local variables for a multicall. See L<perlcall/LIGHTWEIGHT CALLBACKS>. |
9850bf21 | 1127 | |
78342678 | 1128 | =for apidoc Ams||PUSH_MULTICALL|CV* the_cv |
9850bf21 | 1129 | Opening bracket for a lightweight callback. |
0eda4409 | 1130 | See L<perlcall/LIGHTWEIGHT CALLBACKS>. |
9850bf21 | 1131 | |
4e5171e9 | 1132 | =for apidoc Amns||MULTICALL |
72d33970 | 1133 | Make a lightweight callback. See L<perlcall/LIGHTWEIGHT CALLBACKS>. |
9850bf21 | 1134 | |
4e5171e9 | 1135 | =for apidoc Amns||POP_MULTICALL |
9850bf21 | 1136 | Closing bracket for a lightweight callback. |
0eda4409 | 1137 | See L<perlcall/LIGHTWEIGHT CALLBACKS>. |
9850bf21 RH |
1138 | |
1139 | =cut | |
1140 | */ | |
1141 | ||
1142 | #define dMULTICALL \ | |
79503099 | 1143 | OP *multicall_cop; \ |
35095fd0 | 1144 | bool multicall_oldcatch |
9850bf21 | 1145 | |
82f35e8b | 1146 | #define PUSH_MULTICALL(the_cv) \ |
b0065247 | 1147 | PUSH_MULTICALL_FLAGS(the_cv, 0) |
81ed78b2 | 1148 | |
b0065247 DM |
1149 | /* Like PUSH_MULTICALL, but allows you to specify extra flags |
1150 | * for the CX stack entry (this isn't part of the public API) */ | |
81ed78b2 | 1151 | |
b0065247 | 1152 | #define PUSH_MULTICALL_FLAGS(the_cv, flags) \ |
9850bf21 | 1153 | STMT_START { \ |
79503099 | 1154 | PERL_CONTEXT *cx; \ |
0bcc34c2 AL |
1155 | CV * const _nOnclAshIngNamE_ = the_cv; \ |
1156 | CV * const cv = _nOnclAshIngNamE_; \ | |
b70d5558 | 1157 | PADLIST * const padlist = CvPADLIST(cv); \ |
9850bf21 | 1158 | multicall_oldcatch = CATCH_GET; \ |
9850bf21 | 1159 | CATCH_SET(TRUE); \ |
e1a10f35 | 1160 | PUSHSTACKi(PERLSI_MULTICALL); \ |
1c23e2bd | 1161 | cx = cx_pushblock((CXt_SUB|CXp_MULTICALL|flags), (U8)gimme, \ |
fd9b7244 | 1162 | PL_stack_sp, PL_savestack_ix); \ |
79503099 | 1163 | cx_pushsub(cx, cv, NULL, 0); \ |
49f582ca | 1164 | SAVEOP(); \ |
b0065247 DM |
1165 | if (!(flags & CXp_SUB_RE_FAKE)) \ |
1166 | CvDEPTH(cv)++; \ | |
d2af2719 | 1167 | if (CvDEPTH(cv) >= 2) \ |
9850bf21 | 1168 | Perl_pad_push(aTHX_ padlist, CvDEPTH(cv)); \ |
9850bf21 RH |
1169 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); \ |
1170 | multicall_cop = CvSTART(cv); \ | |
1171 | } STMT_END | |
1172 | ||
1173 | #define MULTICALL \ | |
1174 | STMT_START { \ | |
1175 | PL_op = multicall_cop; \ | |
1176 | CALLRUNOPS(aTHX); \ | |
1177 | } STMT_END | |
1178 | ||
1179 | #define POP_MULTICALL \ | |
1180 | STMT_START { \ | |
79503099 | 1181 | PERL_CONTEXT *cx; \ |
4ebe6e95 | 1182 | cx = CX_CUR(); \ |
dfe0f39b | 1183 | CX_LEAVE_SCOPE(cx); \ |
a73d8813 | 1184 | cx_popsub_common(cx); \ |
4df352a8 | 1185 | gimme = cx->blk_gimme; \ |
7e27c4a5 | 1186 | PERL_UNUSED_VAR(gimme); /* for API */ \ |
ed8ff0f3 | 1187 | cx_popblock(cx); \ |
5da525e9 | 1188 | CX_POP(cx); \ |
1bbbfc50 | 1189 | POPSTACK; \ |
9850bf21 | 1190 | CATCH_SET(multicall_oldcatch); \ |
1bbbfc50 | 1191 | SPAGAIN; \ |
9850bf21 | 1192 | } STMT_END |
b3ca2e83 | 1193 | |
81ed78b2 DM |
1194 | /* Change the CV of an already-pushed MULTICALL CxSUB block. |
1195 | * (this isn't part of the public API) */ | |
1196 | ||
b0065247 | 1197 | #define CHANGE_MULTICALL_FLAGS(the_cv, flags) \ |
81ed78b2 DM |
1198 | STMT_START { \ |
1199 | CV * const _nOnclAshIngNamE_ = the_cv; \ | |
1200 | CV * const cv = _nOnclAshIngNamE_; \ | |
b70d5558 | 1201 | PADLIST * const padlist = CvPADLIST(cv); \ |
79503099 | 1202 | PERL_CONTEXT *cx = CX_CUR(); \ |
79646418 | 1203 | assert(CxMULTICALL(cx)); \ |
a73d8813 | 1204 | cx_popsub_common(cx); \ |
b0065247 | 1205 | cx->cx_type = (CXt_SUB|CXp_MULTICALL|flags); \ |
79503099 | 1206 | cx_pushsub(cx, cv, NULL, 0); \ |
b0065247 DM |
1207 | if (!(flags & CXp_SUB_RE_FAKE)) \ |
1208 | CvDEPTH(cv)++; \ | |
d2af2719 | 1209 | if (CvDEPTH(cv) >= 2) \ |
81ed78b2 | 1210 | Perl_pad_push(aTHX_ padlist, CvDEPTH(cv)); \ |
81ed78b2 | 1211 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); \ |
81ed78b2 DM |
1212 | multicall_cop = CvSTART(cv); \ |
1213 | } STMT_END | |
b3ca2e83 | 1214 | /* |
14d04a33 | 1215 | * ex: set ts=8 sts=4 sw=4 et: |
b3ca2e83 | 1216 | */ |