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dd2155a4 DM |
1 | /* pad.h |
2 | * | |
2eee27d7 SS |
3 | * Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008, |
4 | * 2009, 2010, 2011 by Larry Wall and others | |
dd2155a4 DM |
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 | * | |
9 | * This file defines the types and macros associated with the API for | |
10 | * manipulating scratchpads, which are used by perl to store lexical | |
11 | * variables, op targets and constants. | |
12 | */ | |
13 | ||
cc76b5cc Z |
14 | /* |
15 | =head1 Pad Data Structures | |
16 | */ | |
dd2155a4 DM |
17 | |
18 | ||
dd2155a4 DM |
19 | /* offsets within a pad */ |
20 | ||
21 | #if PTRSIZE == 4 | |
22 | typedef U32TYPE PADOFFSET; | |
23 | #else | |
24 | # if PTRSIZE == 8 | |
25 | typedef U64TYPE PADOFFSET; | |
26 | # endif | |
27 | #endif | |
28 | #define NOT_IN_PAD ((PADOFFSET) -1) | |
809abb02 | 29 | |
9b7476d7 FC |
30 | /* B.xs expects the first members of these two structs to line up |
31 | (xpadl_max with xpadnl_fill). | |
32 | */ | |
7261499d FC |
33 | |
34 | struct padlist { | |
35 | SSize_t xpadl_max; /* max index for which array has space */ | |
30dc90f1 DD |
36 | union { |
37 | PAD ** xpadlarr_alloc; /* Pointer to beginning of array of AVs. | |
38 | index 0 is a padnamelist * */ | |
39 | struct { | |
40 | PADNAMELIST * padnl; | |
41 | PAD * pad_1; /* this slice of PAD * array always alloced */ | |
42 | PAD * pad_2; /* maybe unalloced */ | |
43 | } * xpadlarr_dbg; /* for use with a C debugger only */ | |
44 | } xpadl_arr; | |
b4db5868 FC |
45 | U32 xpadl_id; /* Semi-unique ID, shared between clones */ |
46 | U32 xpadl_outid; /* ID of outer pad */ | |
7261499d FC |
47 | }; |
48 | ||
9b7476d7 FC |
49 | struct padnamelist { |
50 | SSize_t xpadnl_fill; /* max index in use */ | |
51 | PADNAME ** xpadnl_alloc; /* pointer to beginning of array */ | |
52 | SSize_t xpadnl_max; /* max index for which array has space */ | |
53 | PADOFFSET xpadnl_max_named; /* highest index with len > 0 */ | |
54 | U32 xpadnl_refcnt; | |
55 | }; | |
56 | ||
66230865 FC |
57 | /* PERL_PADNAME_MINIMAL uses less memory, but on some platforms |
58 | PERL_PADNAME_ALIGNED may be faster, so platform-specific hints can | |
59 | define one or the other. */ | |
60 | #if defined(PERL_PADNAME_MINIMAL) && defined (PERL_PADNAME_ALIGNED) | |
61 | # error PERL_PADNAME_MINIMAL and PERL_PADNAME_ALIGNED are exclusive | |
62 | #endif | |
63 | ||
64 | #if !defined(PERL_PADNAME_MINIMAL) && !defined(PERL_PADNAME_ALIGNED) | |
3d6de2cd | 65 | # define PERL_PADNAME_MINIMAL |
66230865 FC |
66 | #endif |
67 | ||
68 | #define _PADNAME_BASE \ | |
69 | char * xpadn_pv; \ | |
70 | HV * xpadn_ourstash; \ | |
71 | union { \ | |
72 | HV * xpadn_typestash; \ | |
73 | CV * xpadn_protocv; \ | |
74 | } xpadn_type_u; \ | |
75 | U32 xpadn_low; \ | |
76 | U32 xpadn_high; \ | |
77 | U32 xpadn_refcnt; \ | |
78 | int xpadn_gen; \ | |
79 | U8 xpadn_len; \ | |
80 | U8 xpadn_flags | |
81 | ||
0f94cb1f | 82 | struct padname { |
66230865 | 83 | _PADNAME_BASE; |
0f94cb1f FC |
84 | }; |
85 | ||
86 | struct padname_with_str { | |
66230865 FC |
87 | #ifdef PERL_PADNAME_MINIMAL |
88 | _PADNAME_BASE; | |
89 | #else | |
0f94cb1f | 90 | struct padname xpadn_padname; |
66230865 | 91 | #endif |
0f94cb1f FC |
92 | char xpadn_str[1]; |
93 | }; | |
94 | ||
66230865 FC |
95 | #undef _PADNAME_BASE |
96 | ||
0f94cb1f FC |
97 | #define PADNAME_FROM_PV(s) \ |
98 | ((PADNAME *)((s) - STRUCT_OFFSET(struct padname_with_str, xpadn_str))) | |
99 | ||
7261499d | 100 | |
2df5bdd7 DM |
101 | /* a value that PL_cop_seqmax is guaranteed never to be, |
102 | * flagging that a lexical is being introduced, or has not yet left scope | |
103 | */ | |
104 | #define PERL_PADSEQ_INTRO U32_MAX | |
953c8b80 FC |
105 | #define COP_SEQMAX_INC \ |
106 | (PL_cop_seqmax++, \ | |
107 | (void)(PL_cop_seqmax == PERL_PADSEQ_INTRO && PL_cop_seqmax++)) | |
2df5bdd7 DM |
108 | |
109 | ||
7948fc08 | 110 | /* B.xs needs these for the benefit of B::Deparse */ |
809abb02 | 111 | /* Low range end is exclusive (valid from the cop seq after this one) */ |
809abb02 | 112 | /* High range end is inclusive (valid up to this cop seq) */ |
809abb02 | 113 | |
0f94cb1f FC |
114 | #define COP_SEQ_RANGE_LOW(pn) (pn)->xpadn_low |
115 | #define COP_SEQ_RANGE_HIGH(pn) (pn)->xpadn_high | |
116 | #define PARENT_PAD_INDEX(pn) (pn)->xpadn_low | |
117 | #define PARENT_FAKELEX_FLAGS(pn) (pn)->xpadn_high | |
dd2155a4 | 118 | |
6c5e080d | 119 | /* Flags set in the SvIVX field of FAKE namesvs */ |
7948fc08 | 120 | |
6c5e080d NC |
121 | #define PAD_FAKELEX_ANON 1 /* the lex is declared in an ANON, or ... */ |
122 | #define PAD_FAKELEX_MULTI 2 /* the lex can be instantiated multiple times */ | |
123 | ||
dd2155a4 DM |
124 | /* flags for the pad_new() function */ |
125 | ||
c7c737cb DM |
126 | #define padnew_CLONE 1 /* this pad is for a cloned CV */ |
127 | #define padnew_SAVE 2 /* save old globals */ | |
128 | #define padnew_SAVESUB 4 /* also save extra stuff for start of sub */ | |
dd2155a4 DM |
129 | |
130 | /* values for the pad_tidy() function */ | |
131 | ||
132 | typedef enum { | |
133 | padtidy_SUB, /* tidy up a pad for a sub, */ | |
134 | padtidy_SUBCLONE, /* a cloned sub, */ | |
135 | padtidy_FORMAT /* or a format */ | |
136 | } padtidy_type; | |
137 | ||
9f6ec8dd | 138 | /* flags for pad_add_name_pvn. */ |
35f82371 | 139 | |
9f6ec8dd BF |
140 | #define padadd_OUR 0x01 /* our declaration. */ |
141 | #define padadd_STATE 0x02 /* state declaration. */ | |
142 | #define padadd_NO_DUP_CHECK 0x04 /* skip warning on dups. */ | |
7ef30830 FC |
143 | #define padadd_STALEOK 0x08 /* allow stale lexical in active |
144 | * sub, but only one level up */ | |
35f82371 | 145 | |
f3548bdc DM |
146 | /* ASSERT_CURPAD_LEGAL and ASSERT_CURPAD_ACTIVE respectively determine |
147 | * whether PL_comppad and PL_curpad are consistent and whether they have | |
148 | * active values */ | |
dd2155a4 | 149 | |
1dba731d | 150 | # define pad_peg(label) |
1dba731d | 151 | |
f3548bdc DM |
152 | #ifdef DEBUGGING |
153 | # define ASSERT_CURPAD_LEGAL(label) \ | |
1dba731d | 154 | pad_peg(label); \ |
f3548bdc | 155 | if (PL_comppad ? (AvARRAY(PL_comppad) != PL_curpad) : (PL_curpad != 0)) \ |
61608bb7 | 156 | Perl_croak(aTHX_ "panic: illegal pad in %s: 0x%" UVxf "[0x%" UVxf "]",\ |
f3548bdc DM |
157 | label, PTR2UV(PL_comppad), PTR2UV(PL_curpad)); |
158 | ||
159 | ||
160 | # define ASSERT_CURPAD_ACTIVE(label) \ | |
1dba731d | 161 | pad_peg(label); \ |
f3548bdc | 162 | if (!PL_comppad || (AvARRAY(PL_comppad) != PL_curpad)) \ |
61608bb7 | 163 | Perl_croak(aTHX_ "panic: invalid pad in %s: 0x%" UVxf "[0x%" UVxf "]",\ |
f3548bdc DM |
164 | label, PTR2UV(PL_comppad), PTR2UV(PL_curpad)); |
165 | #else | |
166 | # define ASSERT_CURPAD_LEGAL(label) | |
167 | # define ASSERT_CURPAD_ACTIVE(label) | |
168 | #endif | |
169 | ||
170 | ||
171 | ||
172 | /* Note: the following three macros are actually defined in scope.h, but | |
dd2155a4 DM |
173 | * they are documented here for completeness, since they directly or |
174 | * indirectly affect pads. | |
175 | ||
176 | =for apidoc m|void|SAVEPADSV |PADOFFSET po | |
177 | Save a pad slot (used to restore after an iteration) | |
178 | ||
f3548bdc | 179 | XXX DAPM it would make more sense to make the arg a PADOFFSET |
dd2155a4 | 180 | =for apidoc m|void|SAVECLEARSV |SV **svp |
154e47c8 | 181 | Clear the pointed to pad value on scope exit. (i.e. the runtime action of |
796b6530 | 182 | C<my>) |
dd2155a4 DM |
183 | |
184 | =for apidoc m|void|SAVECOMPPAD | |
796b6530 | 185 | save C<PL_comppad> and C<PL_curpad> |
dd2155a4 | 186 | |
dd2155a4 | 187 | |
86d2498c | 188 | =for apidoc Amx|PAD **|PadlistARRAY|PADLIST padlist |
35e035cc FC |
189 | The C array of a padlist, containing the pads. Only subscript it with |
190 | numbers >= 1, as the 0th entry is not guaranteed to remain usable. | |
dd2155a4 | 191 | |
86d2498c | 192 | =for apidoc Amx|SSize_t|PadlistMAX|PADLIST padlist |
57ee99bb | 193 | The index of the last allocated space in the padlist. Note that the last |
796b6530 | 194 | pad may be in an earlier slot. Any entries following it will be C<NULL> in |
57ee99bb | 195 | that case. |
35e035cc | 196 | |
86d2498c | 197 | =for apidoc Amx|PADNAMELIST *|PadlistNAMES|PADLIST padlist |
35e035cc FC |
198 | The names associated with pad entries. |
199 | ||
86d2498c | 200 | =for apidoc Amx|PADNAME **|PadlistNAMESARRAY|PADLIST padlist |
35e035cc FC |
201 | The C array of pad names. |
202 | ||
86d2498c | 203 | =for apidoc Amx|SSize_t|PadlistNAMESMAX|PADLIST padlist |
35e035cc FC |
204 | The index of the last pad name. |
205 | ||
86d2498c | 206 | =for apidoc Amx|U32|PadlistREFCNT|PADLIST padlist |
35e035cc FC |
207 | The reference count of the padlist. Currently this is always 1. |
208 | ||
86d2498c | 209 | =for apidoc Amx|PADNAME **|PadnamelistARRAY|PADNAMELIST pnl |
35e035cc FC |
210 | The C array of pad names. |
211 | ||
86d2498c | 212 | =for apidoc Amx|SSize_t|PadnamelistMAX|PADNAMELIST pnl |
35e035cc FC |
213 | The index of the last pad name. |
214 | ||
9b7476d7 FC |
215 | =for apidoc Amx|SSize_t|PadnamelistREFCNT|PADNAMELIST pnl |
216 | The reference count of the pad name list. | |
217 | ||
218 | =for apidoc Amx|void|PadnamelistREFCNT_dec|PADNAMELIST pnl | |
219 | Lowers the reference count of the pad name list. | |
220 | ||
86d2498c | 221 | =for apidoc Amx|SV **|PadARRAY|PAD pad |
35e035cc FC |
222 | The C array of pad entries. |
223 | ||
86d2498c | 224 | =for apidoc Amx|SSize_t|PadMAX|PAD pad |
35e035cc FC |
225 | The index of the last pad entry. |
226 | ||
86d2498c | 227 | =for apidoc Amx|char *|PadnamePV|PADNAME pn |
796b6530 | 228 | The name stored in the pad name struct. This returns C<NULL> for a target |
863f2221 | 229 | slot. |
35e035cc | 230 | |
86d2498c | 231 | =for apidoc Amx|STRLEN|PadnameLEN|PADNAME pn |
35e035cc FC |
232 | The length of the name. |
233 | ||
86d2498c | 234 | =for apidoc Amx|bool|PadnameUTF8|PADNAME pn |
4a4088c4 | 235 | Whether PadnamePV is in UTF-8. Currently, this is always true. |
35e035cc | 236 | |
86d2498c | 237 | =for apidoc Amx|SV *|PadnameSV|PADNAME pn |
0f94cb1f | 238 | Returns the pad name as a mortal SV. |
97dad6bd | 239 | |
86d2498c | 240 | =for apidoc m|bool|PadnameIsOUR|PADNAME pn |
35e035cc FC |
241 | Whether this is an "our" variable. |
242 | ||
86d2498c | 243 | =for apidoc m|HV *|PadnameOURSTASH |
35e035cc FC |
244 | The stash in which this "our" variable was declared. |
245 | ||
86d2498c | 246 | =for apidoc m|bool|PadnameOUTER|PADNAME pn |
b19cb98d FC |
247 | Whether this entry belongs to an outer pad. Entries for which this is true |
248 | are often referred to as 'fake'. | |
c44737a2 | 249 | |
3f6a9d3a | 250 | =for apidoc m|bool|PadnameIsSTATE|PADNAME pn |
643fe368 FC |
251 | Whether this is a "state" variable. |
252 | ||
86d2498c | 253 | =for apidoc m|HV *|PadnameTYPE|PADNAME pn |
796b6530 | 254 | The stash associated with a typed lexical. This returns the C<%Foo::> hash |
35e035cc | 255 | for C<my Foo $bar>. |
dd2155a4 | 256 | |
0f94cb1f FC |
257 | =for apidoc Amx|SSize_t|PadnameREFCNT|PADNAME pn |
258 | The reference count of the pad name. | |
259 | ||
260 | =for apidoc Amx|void|PadnameREFCNT_dec|PADNAME pn | |
261 | Lowers the reference count of the pad name. | |
262 | ||
dd2155a4 DM |
263 | |
264 | =for apidoc m|SV *|PAD_SETSV |PADOFFSET po|SV* sv | |
265 | Set the slot at offset C<po> in the current pad to C<sv> | |
266 | ||
9a0afbbc | 267 | =for apidoc m|SV *|PAD_SV |PADOFFSET po |
dd2155a4 DM |
268 | Get the value at offset C<po> in the current pad |
269 | ||
270 | =for apidoc m|SV *|PAD_SVl |PADOFFSET po | |
271 | Lightweight and lvalue version of C<PAD_SV>. | |
272 | Get or set the value at offset C<po> in the current pad. | |
273 | Unlike C<PAD_SV>, does not print diagnostics with -DX. | |
274 | For internal use only. | |
275 | ||
276 | =for apidoc m|SV *|PAD_BASE_SV |PADLIST padlist|PADOFFSET po | |
277 | Get the value from slot C<po> in the base (DEPTH=1) pad of a padlist | |
278 | ||
279 | =for apidoc m|void|PAD_SET_CUR |PADLIST padlist|I32 n | |
280 | Set the current pad to be pad C<n> in the padlist, saving | |
154e47c8 | 281 | the previous current pad. NB currently this macro expands to a string too |
fd617465 DM |
282 | long for some compilers, so it's best to replace it with |
283 | ||
284 | SAVECOMPPAD(); | |
285 | PAD_SET_CUR_NOSAVE(padlist,n); | |
286 | ||
dd2155a4 | 287 | |
4e380990 DM |
288 | =for apidoc m|void|PAD_SET_CUR_NOSAVE |PADLIST padlist|I32 n |
289 | like PAD_SET_CUR, but without the save | |
290 | ||
dd2155a4 DM |
291 | =for apidoc m|void|PAD_SAVE_SETNULLPAD |
292 | Save the current pad then set it to null. | |
293 | ||
f3548bdc | 294 | =for apidoc m|void|PAD_SAVE_LOCAL|PAD *opad|PAD *npad |
796b6530 KW |
295 | Save the current pad to the local variable C<opad>, then make the |
296 | current pad equal to C<npad> | |
f3548bdc DM |
297 | |
298 | =for apidoc m|void|PAD_RESTORE_LOCAL|PAD *opad | |
796b6530 | 299 | Restore the old pad saved into the local variable C<opad> by C<PAD_SAVE_LOCAL()> |
dd2155a4 DM |
300 | |
301 | =cut | |
302 | */ | |
303 | ||
30dc90f1 | 304 | #define PadlistARRAY(pl) (pl)->xpadl_arr.xpadlarr_alloc |
86d2498c | 305 | #define PadlistMAX(pl) (pl)->xpadl_max |
73949fca | 306 | #define PadlistNAMES(pl) *((PADNAMELIST **)PadlistARRAY(pl)) |
86d2498c FC |
307 | #define PadlistNAMESARRAY(pl) PadnamelistARRAY(PadlistNAMES(pl)) |
308 | #define PadlistNAMESMAX(pl) PadnamelistMAX(PadlistNAMES(pl)) | |
309 | #define PadlistREFCNT(pl) 1 /* reserved for future use */ | |
7261499d | 310 | |
9b7476d7 FC |
311 | #define PadnamelistARRAY(pnl) (pnl)->xpadnl_alloc |
312 | #define PadnamelistMAX(pnl) (pnl)->xpadnl_fill | |
313 | #define PadnamelistMAXNAMED(pnl) (pnl)->xpadnl_max_named | |
314 | #define PadnamelistREFCNT(pnl) (pnl)->xpadnl_refcnt | |
315 | #define PadnamelistREFCNT_dec(pnl) Perl_padnamelist_free(aTHX_ pnl) | |
35e035cc | 316 | |
86d2498c FC |
317 | #define PadARRAY(pad) AvARRAY(pad) |
318 | #define PadMAX(pad) AvFILLp(pad) | |
35e035cc | 319 | |
0f94cb1f FC |
320 | #define PadnamePV(pn) (pn)->xpadn_pv |
321 | #define PadnameLEN(pn) (pn)->xpadn_len | |
322 | #define PadnameUTF8(pn) 1 | |
323 | #define PadnameSV(pn) \ | |
324 | newSVpvn_flags(PadnamePV(pn), PadnameLEN(pn), SVs_TEMP|SVf_UTF8) | |
325 | #define PadnameFLAGS(pn) (pn)->xpadn_flags | |
326 | #define PadnameIsOUR(pn) (!!(pn)->xpadn_ourstash) | |
327 | #define PadnameOURSTASH(pn) (pn)->xpadn_ourstash | |
328 | #define PadnameTYPE(pn) (pn)->xpadn_type_u.xpadn_typestash | |
329 | #define PadnamePROTOCV(pn) (pn)->xpadn_type_u.xpadn_protocv | |
330 | #define PadnameREFCNT(pn) (pn)->xpadn_refcnt | |
331 | #define PadnameREFCNT_dec(pn) Perl_padname_free(aTHX_ pn) | |
332 | #define PadnameOURSTASH_set(pn,s) (PadnameOURSTASH(pn) = (s)) | |
333 | #define PadnameTYPE_set(pn,s) (PadnameTYPE(pn) = (s)) | |
334 | #define PadnameOUTER(pn) (PadnameFLAGS(pn) & PADNAMEt_OUTER) | |
335 | #define PadnameIsSTATE(pn) (PadnameFLAGS(pn) & PADNAMEt_STATE) | |
336 | #define PadnameLVALUE(pn) (PadnameFLAGS(pn) & PADNAMEt_LVALUE) | |
337 | ||
338 | #define PadnameLVALUE_on(pn) (PadnameFLAGS(pn) |= PADNAMEt_LVALUE) | |
339 | #define PadnameIsSTATE_on(pn) (PadnameFLAGS(pn) |= PADNAMEt_STATE) | |
340 | ||
341 | #define PADNAMEt_OUTER 1 /* outer lexical var */ | |
342 | #define PADNAMEt_STATE 2 /* state var */ | |
343 | #define PADNAMEt_LVALUE 4 /* used as lvalue */ | |
344 | #define PADNAMEt_TYPED 8 /* for B; unused by core */ | |
345 | #define PADNAMEt_OUR 16 /* for B; unused by core */ | |
346 | ||
347 | /* backward compatibility */ | |
348 | #define SvPAD_STATE PadnameIsSTATE | |
349 | #define SvPAD_TYPED(pn) (!!PadnameTYPE(pn)) | |
350 | #define SvPAD_OUR(pn) (!!PadnameOURSTASH(pn)) | |
351 | #define SvPAD_STATE_on PadnameIsSTATE_on | |
352 | #define SvPAD_TYPED_on(pn) (PadnameFLAGS(pn) |= PADNAMEt_TYPED) | |
353 | #define SvPAD_OUR_on(pn) (PadnameFLAGS(pn) |= PADNAMEt_OUR) | |
354 | #define SvOURSTASH PadnameOURSTASH | |
355 | #define SvOURSTASH_set PadnameOURSTASH_set | |
356 | #define SVpad_STATE PADNAMEt_STATE | |
357 | #define SVpad_TYPED PADNAMEt_TYPED | |
358 | #define SVpad_OUR PADNAMEt_OUR | |
35e035cc | 359 | |
dd2155a4 DM |
360 | #ifdef DEBUGGING |
361 | # define PAD_SV(po) pad_sv(po) | |
362 | # define PAD_SETSV(po,sv) pad_setsv(po,sv) | |
363 | #else | |
364 | # define PAD_SV(po) (PL_curpad[po]) | |
365 | # define PAD_SETSV(po,sv) PL_curpad[po] = (sv) | |
366 | #endif | |
367 | ||
368 | #define PAD_SVl(po) (PL_curpad[po]) | |
369 | ||
370 | #define PAD_BASE_SV(padlist, po) \ | |
86d2498c FC |
371 | (PadlistARRAY(padlist)[1]) \ |
372 | ? AvARRAY(MUTABLE_AV((PadlistARRAY(padlist)[1])))[po] \ | |
7261499d | 373 | : NULL; |
7948fc08 | 374 | |
dd2155a4 | 375 | |
de5e01c2 | 376 | #define PAD_SET_CUR_NOSAVE(padlist,nth) \ |
86d2498c | 377 | PL_comppad = (PAD*) (PadlistARRAY(padlist)[nth]); \ |
f3548bdc DM |
378 | PL_curpad = AvARRAY(PL_comppad); \ |
379 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, \ | |
61608bb7 | 380 | "Pad 0x%" UVxf "[0x%" UVxf "] set_cur depth=%d\n", \ |
de5e01c2 | 381 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), (int)(nth))); |
f3548bdc DM |
382 | |
383 | ||
de5e01c2 | 384 | #define PAD_SET_CUR(padlist,nth) \ |
4e380990 | 385 | SAVECOMPPAD(); \ |
de5e01c2 | 386 | PAD_SET_CUR_NOSAVE(padlist,nth); |
4e380990 DM |
387 | |
388 | ||
f3548bdc | 389 | #define PAD_SAVE_SETNULLPAD() SAVECOMPPAD(); \ |
4608196e | 390 | PL_comppad = NULL; PL_curpad = NULL; \ |
f3548bdc DM |
391 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, "Pad set_null\n")); |
392 | ||
393 | #define PAD_SAVE_LOCAL(opad,npad) \ | |
394 | opad = PL_comppad; \ | |
395 | PL_comppad = (npad); \ | |
4608196e | 396 | PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL; \ |
f3548bdc | 397 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, \ |
61608bb7 | 398 | "Pad 0x%" UVxf "[0x%" UVxf "] save_local\n", \ |
f3548bdc DM |
399 | PTR2UV(PL_comppad), PTR2UV(PL_curpad))); |
400 | ||
401 | #define PAD_RESTORE_LOCAL(opad) \ | |
8c63ea58 GG |
402 | assert(!opad || !SvIS_FREED(opad)); \ |
403 | PL_comppad = opad; \ | |
4608196e | 404 | PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL; \ |
f3548bdc | 405 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, \ |
61608bb7 | 406 | "Pad 0x%" UVxf "[0x%" UVxf "] restore_local\n", \ |
f3548bdc | 407 | PTR2UV(PL_comppad), PTR2UV(PL_curpad))); |
dd2155a4 DM |
408 | |
409 | ||
410 | /* | |
411 | =for apidoc m|void|CX_CURPAD_SAVE|struct context | |
412 | Save the current pad in the given context block structure. | |
413 | ||
f3548bdc | 414 | =for apidoc m|SV *|CX_CURPAD_SV|struct context|PADOFFSET po |
796b6530 | 415 | Access the SV at offset C<po> in the saved current pad in the given |
dd2155a4 DM |
416 | context block structure (can be used as an lvalue). |
417 | ||
418 | =cut | |
419 | */ | |
420 | ||
f3548bdc | 421 | #define CX_CURPAD_SAVE(block) (block).oldcomppad = PL_comppad |
a062e10d | 422 | #define CX_CURPAD_SV(block,po) (AvARRAY(MUTABLE_AV(((block).oldcomppad)))[po]) |
dd2155a4 DM |
423 | |
424 | ||
425 | /* | |
426 | =for apidoc m|U32|PAD_COMPNAME_FLAGS|PADOFFSET po | |
427 | Return the flags for the current compiling pad name | |
154e47c8 | 428 | at offset C<po>. Assumes a valid slot entry. |
dd2155a4 DM |
429 | |
430 | =for apidoc m|char *|PAD_COMPNAME_PV|PADOFFSET po | |
431 | Return the name of the current compiling pad name | |
154e47c8 | 432 | at offset C<po>. Assumes a valid slot entry. |
dd2155a4 DM |
433 | |
434 | =for apidoc m|HV *|PAD_COMPNAME_TYPE|PADOFFSET po | |
435 | Return the type (stash) of the current compiling pad name at offset | |
154e47c8 | 436 | C<po>. Must be a valid name. Returns null if not typed. |
dd2155a4 DM |
437 | |
438 | =for apidoc m|HV *|PAD_COMPNAME_OURSTASH|PADOFFSET po | |
439 | Return the stash associated with an C<our> variable. | |
440 | Assumes the slot entry is a valid C<our> lexical. | |
441 | ||
442 | =for apidoc m|STRLEN|PAD_COMPNAME_GEN|PADOFFSET po | |
443 | The generation number of the name at offset C<po> in the current | |
e25bbd9e | 444 | compiling pad (lvalue). |
dd2155a4 | 445 | |
b162af07 SP |
446 | =for apidoc m|STRLEN|PAD_COMPNAME_GEN_set|PADOFFSET po|int gen |
447 | Sets the generation number of the name at offset C<po> in the current | |
e25bbd9e | 448 | ling pad (lvalue) to C<gen>. |
dd2155a4 | 449 | =cut |
b162af07 | 450 | |
dd2155a4 DM |
451 | */ |
452 | ||
35e035cc | 453 | #define PAD_COMPNAME(po) PAD_COMPNAME_SV(po) |
9b7476d7 | 454 | #define PAD_COMPNAME_SV(po) (PadnamelistARRAY(PL_comppad_name)[(po)]) |
0f94cb1f | 455 | #define PAD_COMPNAME_FLAGS(po) PadnameFLAGS(PAD_COMPNAME(po)) |
1979170b | 456 | #define PAD_COMPNAME_FLAGS_isOUR(po) SvPAD_OUR(PAD_COMPNAME_SV(po)) |
e1c02f84 | 457 | #define PAD_COMPNAME_PV(po) PadnamePV(PAD_COMPNAME(po)) |
dd2155a4 | 458 | |
afb6e3f5 | 459 | #define PAD_COMPNAME_TYPE(po) PadnameTYPE(PAD_COMPNAME(po)) |
dd2155a4 DM |
460 | |
461 | #define PAD_COMPNAME_OURSTASH(po) \ | |
73d95100 | 462 | (SvOURSTASH(PAD_COMPNAME_SV(po))) |
dd2155a4 | 463 | |
9b7476d7 | 464 | #define PAD_COMPNAME_GEN(po) \ |
0f94cb1f | 465 | ((STRLEN)PadnamelistARRAY(PL_comppad_name)[po]->xpadn_gen) |
dd2155a4 | 466 | |
9b7476d7 | 467 | #define PAD_COMPNAME_GEN_set(po, gen) \ |
0f94cb1f | 468 | (PadnamelistARRAY(PL_comppad_name)[po]->xpadn_gen = (gen)) |
dd2155a4 DM |
469 | |
470 | ||
471 | /* | |
d77cdebf | 472 | =for apidoc m|void|PAD_CLONE_VARS|PerlInterpreter *proto_perl|CLONE_PARAMS* param |
dd2155a4 DM |
473 | Clone the state variables associated with running and compiling pads. |
474 | ||
475 | =cut | |
476 | */ | |
477 | ||
c5ab0850 DM |
478 | /* NB - we set PL_comppad to null unless it points at a value that |
479 | * has already been dup'ed, ie it points to part of an active padlist. | |
480 | * Otherwise PL_comppad ends up being a leaked scalar in code like | |
481 | * the following: | |
482 | * threads->create(sub { threads->create(sub {...} ) } ); | |
483 | * where the second thread dups the outer sub's comppad but not the | |
484 | * sub's CV or padlist. */ | |
f3548bdc | 485 | |
dd2155a4 | 486 | #define PAD_CLONE_VARS(proto_perl, param) \ |
253649d9 | 487 | PL_comppad = av_dup(proto_perl->Icomppad, param); \ |
4608196e | 488 | PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL; \ |
9b7476d7 FC |
489 | PL_comppad_name = \ |
490 | padnamelist_dup(proto_perl->Icomppad_name, param); \ | |
dd2155a4 DM |
491 | PL_comppad_name_fill = proto_perl->Icomppad_name_fill; \ |
492 | PL_comppad_name_floor = proto_perl->Icomppad_name_floor; \ | |
dd2155a4 DM |
493 | PL_min_intro_pending = proto_perl->Imin_intro_pending; \ |
494 | PL_max_intro_pending = proto_perl->Imax_intro_pending; \ | |
495 | PL_padix = proto_perl->Ipadix; \ | |
496 | PL_padix_floor = proto_perl->Ipadix_floor; \ | |
497 | PL_pad_reset_pending = proto_perl->Ipad_reset_pending; \ | |
498 | PL_cop_seqmax = proto_perl->Icop_seqmax; | |
e9a8c099 MHM |
499 | |
500 | /* | |
cc76b5cc Z |
501 | =for apidoc Am|PADOFFSET|pad_add_name_pvs|const char *name|U32 flags|HV *typestash|HV *ourstash |
502 | ||
503 | Exactly like L</pad_add_name_pvn>, but takes a literal string instead | |
504 | of a string/length pair. | |
505 | ||
506 | =cut | |
507 | */ | |
508 | ||
509 | #define pad_add_name_pvs(name,flags,typestash,ourstash) \ | |
510 | Perl_pad_add_name_pvn(aTHX_ STR_WITH_LEN(name), flags, typestash, ourstash) | |
511 | ||
512 | /* | |
513 | =for apidoc Am|PADOFFSET|pad_findmy_pvs|const char *name|U32 flags | |
514 | ||
515 | Exactly like L</pad_findmy_pvn>, but takes a literal string instead | |
516 | of a string/length pair. | |
517 | ||
518 | =cut | |
519 | */ | |
520 | ||
521 | #define pad_findmy_pvs(name,flags) \ | |
522 | Perl_pad_findmy_pvn(aTHX_ STR_WITH_LEN(name), flags) | |
523 | ||
524 | /* | |
14d04a33 | 525 | * ex: set ts=8 sts=4 sw=4 et: |
e9a8c099 | 526 | */ |