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1 | /* pp.h |
2 | * | |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, | |
4 | * 2000, 2001, 2002, 2003, 2004, 2005 by Larry Wall and others | |
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 | */ | |
10 | ||
11 | #ifdef USE_5005THREADS | |
12 | #define ARGS thr | |
13 | #define dARGS struct perl_thread *thr; | |
14 | #else | |
15 | #define ARGS | |
16 | #define dARGS | |
17 | #endif /* USE_5005THREADS */ | |
18 | ||
19 | #define PP(s) OP * Perl_##s(pTHX) | |
20 | ||
21 | /* | |
22 | =head1 Stack Manipulation Macros | |
23 | ||
24 | =for apidoc AmU||SP | |
25 | Stack pointer. This is usually handled by C<xsubpp>. See C<dSP> and | |
26 | C<SPAGAIN>. | |
27 | ||
28 | =for apidoc AmU||MARK | |
29 | Stack marker variable for the XSUB. See C<dMARK>. | |
30 | ||
31 | =for apidoc Am|void|PUSHMARK|SP | |
32 | Opening bracket for arguments on a callback. See C<PUTBACK> and | |
33 | L<perlcall>. | |
34 | ||
35 | =for apidoc Ams||dSP | |
36 | Declares a local copy of perl's stack pointer for the XSUB, available via | |
37 | the C<SP> macro. See C<SP>. | |
38 | ||
39 | =for apidoc ms||djSP | |
40 | ||
41 | Declare Just C<SP>. This is actually identical to C<dSP>, and declares | |
42 | a local copy of perl's stack pointer, available via the C<SP> macro. | |
43 | See C<SP>. (Available for backward source code compatibility with the | |
44 | old (Perl 5.005) thread model.) | |
45 | ||
46 | =for apidoc Ams||dMARK | |
47 | Declare a stack marker variable, C<mark>, for the XSUB. See C<MARK> and | |
48 | C<dORIGMARK>. | |
49 | ||
50 | =for apidoc Ams||dORIGMARK | |
51 | Saves the original stack mark for the XSUB. See C<ORIGMARK>. | |
52 | ||
53 | =for apidoc AmU||ORIGMARK | |
54 | The original stack mark for the XSUB. See C<dORIGMARK>. | |
55 | ||
56 | =for apidoc Ams||SPAGAIN | |
57 | Refetch the stack pointer. Used after a callback. See L<perlcall>. | |
58 | ||
59 | =cut */ | |
60 | ||
61 | #undef SP /* Solaris 2.7 i386 has this in /usr/include/sys/reg.h */ | |
62 | #define SP sp | |
63 | #define MARK mark | |
64 | #define TARG targ | |
65 | ||
66 | #define PUSHMARK(p) \ | |
67 | STMT_START { \ | |
68 | if (++PL_markstack_ptr == PL_markstack_max) \ | |
69 | markstack_grow(); \ | |
70 | *PL_markstack_ptr = (p) - PL_stack_base; \ | |
71 | } STMT_END | |
72 | ||
73 | #define TOPMARK (*PL_markstack_ptr) | |
74 | #define POPMARK (*PL_markstack_ptr--) | |
75 | ||
76 | #define dSP register SV **sp = PL_stack_sp | |
77 | #define djSP dSP | |
78 | #define dMARK register SV **mark = PL_stack_base + POPMARK | |
79 | #define dORIGMARK const I32 origmark = mark - PL_stack_base | |
80 | #define ORIGMARK (PL_stack_base + origmark) | |
81 | ||
82 | #define SPAGAIN sp = PL_stack_sp | |
83 | #define MSPAGAIN STMT_START { sp = PL_stack_sp; mark = ORIGMARK; } STMT_END | |
84 | ||
85 | #define GETTARGETSTACKED targ = (PL_op->op_flags & OPf_STACKED ? POPs : PAD_SV(PL_op->op_targ)) | |
86 | #define dTARGETSTACKED SV * GETTARGETSTACKED | |
87 | ||
88 | #define GETTARGET targ = PAD_SV(PL_op->op_targ) | |
89 | #define dTARGET SV * GETTARGET | |
90 | ||
91 | #define GETATARGET targ = (PL_op->op_flags & OPf_STACKED ? sp[-1] : PAD_SV(PL_op->op_targ)) | |
92 | #define dATARGET SV * GETATARGET | |
93 | ||
94 | #define dTARG SV *targ | |
95 | ||
96 | #define NORMAL PL_op->op_next | |
97 | #define DIE return Perl_die | |
98 | #ifndef PERL_CORE | |
99 | # define DIE_NULL return DieNull | |
100 | #endif | |
101 | ||
102 | /* | |
103 | =for apidoc Ams||PUTBACK | |
104 | Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>. | |
105 | See C<PUSHMARK> and L<perlcall> for other uses. | |
106 | ||
107 | =for apidoc Amn|SV*|POPs | |
108 | Pops an SV off the stack. | |
109 | ||
110 | =for apidoc Amn|char*|POPp | |
111 | Pops a string off the stack. Deprecated. New code should use POPpx. | |
112 | ||
113 | =for apidoc Amn|char*|POPpx | |
114 | Pops a string off the stack. | |
115 | ||
116 | =for apidoc Amn|char*|POPpbytex | |
117 | Pops a string off the stack which must consist of bytes i.e. characters < 256. | |
118 | ||
119 | =for apidoc Amn|NV|POPn | |
120 | Pops a double off the stack. | |
121 | ||
122 | =for apidoc Amn|IV|POPi | |
123 | Pops an integer off the stack. | |
124 | ||
125 | =for apidoc Amn|long|POPl | |
126 | Pops a long off the stack. | |
127 | ||
128 | =cut | |
129 | */ | |
130 | ||
131 | #define PUTBACK PL_stack_sp = sp | |
132 | #define RETURN return PUTBACK, NORMAL | |
133 | #define RETURNOP(o) return PUTBACK, o | |
134 | #define RETURNX(x) return x, PUTBACK, NORMAL | |
135 | ||
136 | #define POPs (*sp--) | |
137 | #define POPp (SvPVx(POPs, PL_na)) /* deprecated */ | |
138 | #define POPpx (SvPVx_nolen(POPs)) | |
139 | #define POPpconstx (SvPVx_nolen_const(POPs)) | |
140 | #define POPpbytex (SvPVbytex_nolen(POPs)) | |
141 | #define POPn (SvNVx(POPs)) | |
142 | #define POPi ((IV)SvIVx(POPs)) | |
143 | #define POPu ((UV)SvUVx(POPs)) | |
144 | #define POPl ((long)SvIVx(POPs)) | |
145 | #define POPul ((unsigned long)SvIVx(POPs)) | |
146 | #ifdef HAS_QUAD | |
147 | #define POPq ((Quad_t)SvIVx(POPs)) | |
148 | #define POPuq ((Uquad_t)SvUVx(POPs)) | |
149 | #endif | |
150 | ||
151 | #define TOPs (*sp) | |
152 | #define TOPm1s (*(sp-1)) | |
153 | #define TOPp1s (*(sp+1)) | |
154 | #define TOPp (SvPV(TOPs, PL_na)) /* deprecated */ | |
155 | #define TOPpx (SvPV_nolen(TOPs)) | |
156 | #define TOPn (SvNV(TOPs)) | |
157 | #define TOPi ((IV)SvIV(TOPs)) | |
158 | #define TOPu ((UV)SvUV(TOPs)) | |
159 | #define TOPl ((long)SvIV(TOPs)) | |
160 | #define TOPul ((unsigned long)SvUV(TOPs)) | |
161 | #ifdef HAS_QUAD | |
162 | #define TOPq ((Quad_t)SvIV(TOPs)) | |
163 | #define TOPuq ((Uquad_t)SvUV(TOPs)) | |
164 | #endif | |
165 | ||
166 | /* Go to some pains in the rare event that we must extend the stack. */ | |
167 | ||
168 | /* | |
169 | =for apidoc Am|void|EXTEND|SP|int nitems | |
170 | Used to extend the argument stack for an XSUB's return values. Once | |
171 | used, guarantees that there is room for at least C<nitems> to be pushed | |
172 | onto the stack. | |
173 | ||
174 | =for apidoc Am|void|PUSHs|SV* sv | |
175 | Push an SV onto the stack. The stack must have room for this element. | |
176 | Does not handle 'set' magic. Does not use C<TARG>. See also C<PUSHmortal>, | |
177 | C<XPUSHs> and C<XPUSHmortal>. | |
178 | ||
179 | =for apidoc Am|void|PUSHp|char* str|STRLEN len | |
180 | Push a string onto the stack. The stack must have room for this element. | |
181 | The C<len> indicates the length of the string. Handles 'set' magic. Uses | |
182 | C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to declare it. Do not | |
183 | call multiple C<TARG>-oriented macros to return lists from XSUB's - see | |
184 | C<mPUSHp> instead. See also C<XPUSHp> and C<mXPUSHp>. | |
185 | ||
186 | =for apidoc Am|void|PUSHn|NV nv | |
187 | Push a double onto the stack. The stack must have room for this element. | |
188 | Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be | |
189 | called to declare it. Do not call multiple C<TARG>-oriented macros to | |
190 | return lists from XSUB's - see C<mPUSHn> instead. See also C<XPUSHn> and | |
191 | C<mXPUSHn>. | |
192 | ||
193 | =for apidoc Am|void|PUSHi|IV iv | |
194 | Push an integer onto the stack. The stack must have room for this element. | |
195 | Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be | |
196 | called to declare it. Do not call multiple C<TARG>-oriented macros to | |
197 | return lists from XSUB's - see C<mPUSHi> instead. See also C<XPUSHi> and | |
198 | C<mXPUSHi>. | |
199 | ||
200 | =for apidoc Am|void|PUSHu|UV uv | |
201 | Push an unsigned integer onto the stack. The stack must have room for this | |
202 | element. Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> | |
203 | should be called to declare it. Do not call multiple C<TARG>-oriented | |
204 | macros to return lists from XSUB's - see C<mPUSHu> instead. See also | |
205 | C<XPUSHu> and C<mXPUSHu>. | |
206 | ||
207 | =for apidoc Am|void|XPUSHs|SV* sv | |
208 | Push an SV onto the stack, extending the stack if necessary. Does not | |
209 | handle 'set' magic. Does not use C<TARG>. See also C<XPUSHmortal>, | |
210 | C<PUSHs> and C<PUSHmortal>. | |
211 | ||
212 | =for apidoc Am|void|XPUSHp|char* str|STRLEN len | |
213 | Push a string onto the stack, extending the stack if necessary. The C<len> | |
214 | indicates the length of the string. Handles 'set' magic. Uses C<TARG>, so | |
215 | C<dTARGET> or C<dXSTARG> should be called to declare it. Do not call | |
216 | multiple C<TARG>-oriented macros to return lists from XSUB's - see | |
217 | C<mXPUSHp> instead. See also C<PUSHp> and C<mPUSHp>. | |
218 | ||
219 | =for apidoc Am|void|XPUSHn|NV nv | |
220 | Push a double onto the stack, extending the stack if necessary. Handles | |
221 | 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to | |
222 | declare it. Do not call multiple C<TARG>-oriented macros to return lists | |
223 | from XSUB's - see C<mXPUSHn> instead. See also C<PUSHn> and C<mPUSHn>. | |
224 | ||
225 | =for apidoc Am|void|XPUSHi|IV iv | |
226 | Push an integer onto the stack, extending the stack if necessary. Handles | |
227 | 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to | |
228 | declare it. Do not call multiple C<TARG>-oriented macros to return lists | |
229 | from XSUB's - see C<mXPUSHi> instead. See also C<PUSHi> and C<mPUSHi>. | |
230 | ||
231 | =for apidoc Am|void|XPUSHu|UV uv | |
232 | Push an unsigned integer onto the stack, extending the stack if necessary. | |
233 | Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be | |
234 | called to declare it. Do not call multiple C<TARG>-oriented macros to | |
235 | return lists from XSUB's - see C<mXPUSHu> instead. See also C<PUSHu> and | |
236 | C<mPUSHu>. | |
237 | ||
238 | =for apidoc Am|void|PUSHmortal | |
239 | Push a new mortal SV onto the stack. The stack must have room for this | |
240 | element. Does not handle 'set' magic. Does not use C<TARG>. See also | |
241 | C<PUSHs>, C<XPUSHmortal> and C<XPUSHs>. | |
242 | ||
243 | =for apidoc Am|void|mPUSHp|char* str|STRLEN len | |
244 | Push a string onto the stack. The stack must have room for this element. | |
245 | The C<len> indicates the length of the string. Handles 'set' magic. Does | |
246 | not use C<TARG>. See also C<PUSHp>, C<mXPUSHp> and C<XPUSHp>. | |
247 | ||
248 | =for apidoc Am|void|mPUSHn|NV nv | |
249 | Push a double onto the stack. The stack must have room for this element. | |
250 | Handles 'set' magic. Does not use C<TARG>. See also C<PUSHn>, C<mXPUSHn> | |
251 | and C<XPUSHn>. | |
252 | ||
253 | =for apidoc Am|void|mPUSHi|IV iv | |
254 | Push an integer onto the stack. The stack must have room for this element. | |
255 | Handles 'set' magic. Does not use C<TARG>. See also C<PUSHi>, C<mXPUSHi> | |
256 | and C<XPUSHi>. | |
257 | ||
258 | =for apidoc Am|void|mPUSHu|UV uv | |
259 | Push an unsigned integer onto the stack. The stack must have room for this | |
260 | element. Handles 'set' magic. Does not use C<TARG>. See also C<PUSHu>, | |
261 | C<mXPUSHu> and C<XPUSHu>. | |
262 | ||
263 | =for apidoc Am|void|XPUSHmortal | |
264 | Push a new mortal SV onto the stack, extending the stack if necessary. Does | |
265 | not handle 'set' magic. Does not use C<TARG>. See also C<XPUSHs>, | |
266 | C<PUSHmortal> and C<PUSHs>. | |
267 | ||
268 | =for apidoc Am|void|mXPUSHp|char* str|STRLEN len | |
269 | Push a string onto the stack, extending the stack if necessary. The C<len> | |
270 | indicates the length of the string. Handles 'set' magic. Does not use | |
271 | C<TARG>. See also C<XPUSHp>, C<mPUSHp> and C<PUSHp>. | |
272 | ||
273 | =for apidoc Am|void|mXPUSHn|NV nv | |
274 | Push a double onto the stack, extending the stack if necessary. Handles | |
275 | 'set' magic. Does not use C<TARG>. See also C<XPUSHn>, C<mPUSHn> and | |
276 | C<PUSHn>. | |
277 | ||
278 | =for apidoc Am|void|mXPUSHi|IV iv | |
279 | Push an integer onto the stack, extending the stack if necessary. Handles | |
280 | 'set' magic. Does not use C<TARG>. See also C<XPUSHi>, C<mPUSHi> and | |
281 | C<PUSHi>. | |
282 | ||
283 | =for apidoc Am|void|mXPUSHu|UV uv | |
284 | Push an unsigned integer onto the stack, extending the stack if necessary. | |
285 | Handles 'set' magic. Does not use C<TARG>. See also C<XPUSHu>, C<mPUSHu> | |
286 | and C<PUSHu>. | |
287 | ||
288 | =cut | |
289 | */ | |
290 | ||
291 | #define EXTEND(p,n) STMT_START { if (PL_stack_max - p < (int)(n)) { \ | |
292 | sp = stack_grow(sp,p, (int) (n)); \ | |
293 | } } STMT_END | |
294 | ||
295 | /* Same thing, but update mark register too. */ | |
296 | #define MEXTEND(p,n) STMT_START {if (PL_stack_max - p < (int)(n)) { \ | |
297 | const int markoff = mark - PL_stack_base; \ | |
298 | sp = stack_grow(sp,p,(int) (n)); \ | |
299 | mark = PL_stack_base + markoff; \ | |
300 | } } STMT_END | |
301 | ||
302 | #define PUSHs(s) (*++sp = (s)) | |
303 | #define PUSHTARG STMT_START { SvSETMAGIC(TARG); PUSHs(TARG); } STMT_END | |
304 | #define PUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); PUSHTARG; } STMT_END | |
305 | #define PUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); PUSHTARG; } STMT_END | |
306 | #define PUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); PUSHTARG; } STMT_END | |
307 | #define PUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); PUSHTARG; } STMT_END | |
308 | ||
309 | #define XPUSHs(s) STMT_START { EXTEND(sp,1); (*++sp = (s)); } STMT_END | |
310 | #define XPUSHTARG STMT_START { SvSETMAGIC(TARG); XPUSHs(TARG); } STMT_END | |
311 | #define XPUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); XPUSHTARG; } STMT_END | |
312 | #define XPUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); XPUSHTARG; } STMT_END | |
313 | #define XPUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); XPUSHTARG; } STMT_END | |
314 | #define XPUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); XPUSHTARG; } STMT_END | |
315 | #define XPUSHundef STMT_START { SvOK_off(TARG); XPUSHs(TARG); } STMT_END | |
316 | ||
317 | #define PUSHmortal PUSHs(sv_newmortal()) | |
318 | #define mPUSHp(p,l) sv_setpvn_mg(PUSHmortal, (p), (l)) | |
319 | #define mPUSHn(n) sv_setnv_mg(PUSHmortal, (NV)(n)) | |
320 | #define mPUSHi(i) sv_setiv_mg(PUSHmortal, (IV)(i)) | |
321 | #define mPUSHu(u) sv_setuv_mg(PUSHmortal, (UV)(u)) | |
322 | ||
323 | #define XPUSHmortal XPUSHs(sv_newmortal()) | |
324 | #define mXPUSHp(p,l) STMT_START { EXTEND(sp,1); sv_setpvn_mg(PUSHmortal, (p), (l)); } STMT_END | |
325 | #define mXPUSHn(n) STMT_START { EXTEND(sp,1); sv_setnv_mg(PUSHmortal, (NV)(n)); } STMT_END | |
326 | #define mXPUSHi(i) STMT_START { EXTEND(sp,1); sv_setiv_mg(PUSHmortal, (IV)(i)); } STMT_END | |
327 | #define mXPUSHu(u) STMT_START { EXTEND(sp,1); sv_setuv_mg(PUSHmortal, (UV)(u)); } STMT_END | |
328 | ||
329 | #define SETs(s) (*sp = s) | |
330 | #define SETTARG STMT_START { SvSETMAGIC(TARG); SETs(TARG); } STMT_END | |
331 | #define SETp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); SETTARG; } STMT_END | |
332 | #define SETn(n) STMT_START { sv_setnv(TARG, (NV)(n)); SETTARG; } STMT_END | |
333 | #define SETi(i) STMT_START { sv_setiv(TARG, (IV)(i)); SETTARG; } STMT_END | |
334 | #define SETu(u) STMT_START { sv_setuv(TARG, (UV)(u)); SETTARG; } STMT_END | |
335 | ||
336 | #define dTOPss SV *sv = TOPs | |
337 | #define dPOPss SV *sv = POPs | |
338 | #define dTOPnv NV value = TOPn | |
339 | #define dPOPnv NV value = POPn | |
340 | #define dTOPiv IV value = TOPi | |
341 | #define dPOPiv IV value = POPi | |
342 | #define dTOPuv UV value = TOPu | |
343 | #define dPOPuv UV value = POPu | |
344 | #ifdef HAS_QUAD | |
345 | #define dTOPqv Quad_t value = TOPu | |
346 | #define dPOPqv Quad_t value = POPu | |
347 | #define dTOPuqv Uquad_t value = TOPuq | |
348 | #define dPOPuqv Uquad_t value = POPuq | |
349 | #endif | |
350 | ||
351 | #define dPOPXssrl(X) SV *right = POPs; SV *left = CAT2(X,s) | |
352 | #define dPOPXnnrl(X) NV right = POPn; NV left = CAT2(X,n) | |
353 | #define dPOPXiirl(X) IV right = POPi; IV left = CAT2(X,i) | |
354 | ||
355 | #define USE_LEFT(sv) \ | |
356 | (SvOK(sv) || SvGMAGICAL(sv) || !(PL_op->op_flags & OPf_STACKED)) | |
357 | #define dPOPXnnrl_ul(X) \ | |
358 | NV right = POPn; \ | |
359 | SV *leftsv = CAT2(X,s); \ | |
360 | NV left = USE_LEFT(leftsv) ? SvNV(leftsv) : 0.0 | |
361 | #define dPOPXiirl_ul(X) \ | |
362 | IV right = POPi; \ | |
363 | SV *leftsv = CAT2(X,s); \ | |
364 | IV left = USE_LEFT(leftsv) ? SvIV(leftsv) : 0 | |
365 | ||
366 | #define dPOPPOPssrl dPOPXssrl(POP) | |
367 | #define dPOPPOPnnrl dPOPXnnrl(POP) | |
368 | #define dPOPPOPnnrl_ul dPOPXnnrl_ul(POP) | |
369 | #define dPOPPOPiirl dPOPXiirl(POP) | |
370 | #define dPOPPOPiirl_ul dPOPXiirl_ul(POP) | |
371 | ||
372 | #define dPOPTOPssrl dPOPXssrl(TOP) | |
373 | #define dPOPTOPnnrl dPOPXnnrl(TOP) | |
374 | #define dPOPTOPnnrl_ul dPOPXnnrl_ul(TOP) | |
375 | #define dPOPTOPiirl dPOPXiirl(TOP) | |
376 | #define dPOPTOPiirl_ul dPOPXiirl_ul(TOP) | |
377 | ||
378 | #define RETPUSHYES RETURNX(PUSHs(&PL_sv_yes)) | |
379 | #define RETPUSHNO RETURNX(PUSHs(&PL_sv_no)) | |
380 | #define RETPUSHUNDEF RETURNX(PUSHs(&PL_sv_undef)) | |
381 | ||
382 | #define RETSETYES RETURNX(SETs(&PL_sv_yes)) | |
383 | #define RETSETNO RETURNX(SETs(&PL_sv_no)) | |
384 | #define RETSETUNDEF RETURNX(SETs(&PL_sv_undef)) | |
385 | ||
386 | #define ARGTARG PL_op->op_targ | |
387 | ||
388 | /* See OPpTARGET_MY: */ | |
389 | #define MAXARG (PL_op->op_private & 15) | |
390 | ||
391 | #define SWITCHSTACK(f,t) \ | |
392 | STMT_START { \ | |
393 | AvFILLp(f) = sp - PL_stack_base; \ | |
394 | PL_stack_base = AvARRAY(t); \ | |
395 | PL_stack_max = PL_stack_base + AvMAX(t); \ | |
396 | sp = PL_stack_sp = PL_stack_base + AvFILLp(t); \ | |
397 | PL_curstack = t; \ | |
398 | } STMT_END | |
399 | ||
400 | #define EXTEND_MORTAL(n) \ | |
401 | STMT_START { \ | |
402 | if (PL_tmps_ix + (n) >= PL_tmps_max) \ | |
403 | tmps_grow(n); \ | |
404 | } STMT_END | |
405 | ||
406 | #define AMGf_noright 1 | |
407 | #define AMGf_noleft 2 | |
408 | #define AMGf_assign 4 | |
409 | #define AMGf_unary 8 | |
410 | ||
411 | #define tryAMAGICbinW(meth,assign,set) STMT_START { \ | |
412 | if (PL_amagic_generation) { \ | |
413 | SV* tmpsv; \ | |
414 | SV* const right= *(sp); SV* const left= *(sp-1);\ | |
415 | if ((SvAMAGIC(left)||SvAMAGIC(right))&&\ | |
416 | (tmpsv=amagic_call(left, \ | |
417 | right, \ | |
418 | CAT2(meth,_amg), \ | |
419 | (assign)? AMGf_assign: 0))) {\ | |
420 | SPAGAIN; \ | |
421 | (void)POPs; set(tmpsv); RETURN; } \ | |
422 | } \ | |
423 | } STMT_END | |
424 | ||
425 | #define tryAMAGICbin(meth,assign) tryAMAGICbinW(meth,assign,SETsv) | |
426 | #define tryAMAGICbinSET(meth,assign) tryAMAGICbinW(meth,assign,SETs) | |
427 | ||
428 | #define AMG_CALLun(sv,meth) amagic_call(sv,&PL_sv_undef, \ | |
429 | CAT2(meth,_amg),AMGf_noright | AMGf_unary) | |
430 | #define AMG_CALLbinL(left,right,meth) \ | |
431 | amagic_call(left,right,CAT2(meth,_amg),AMGf_noright) | |
432 | ||
433 | #define tryAMAGICunW(meth,set,shift,ret) STMT_START { \ | |
434 | if (PL_amagic_generation) { \ | |
435 | SV* tmpsv; \ | |
436 | SV* arg= sp[shift]; \ | |
437 | if(0) goto am_again; /* shut up unused warning */ \ | |
438 | am_again: \ | |
439 | if ((SvAMAGIC(arg))&&\ | |
440 | (tmpsv=AMG_CALLun(arg,meth))) {\ | |
441 | SPAGAIN; if (shift) sp += shift; \ | |
442 | set(tmpsv); ret; } \ | |
443 | } \ | |
444 | } STMT_END | |
445 | ||
446 | #define FORCE_SETs(sv) STMT_START { sv_setsv(TARG, (sv)); SETTARG; } STMT_END | |
447 | ||
448 | #define tryAMAGICun(meth) tryAMAGICunW(meth,SETsvUN,0,RETURN) | |
449 | #define tryAMAGICunSET(meth) tryAMAGICunW(meth,SETs,0,RETURN) | |
450 | #define tryAMAGICunTARGET(meth, shift) \ | |
451 | STMT_START { dSP; sp--; /* get TARGET from below PL_stack_sp */ \ | |
452 | { dTARGETSTACKED; \ | |
453 | { dSP; tryAMAGICunW(meth,FORCE_SETs,shift,RETURN);}}} STMT_END | |
454 | ||
455 | #define setAGAIN(ref) \ | |
456 | STMT_START { \ | |
457 | sv = ref; \ | |
458 | if (!SvROK(ref)) \ | |
459 | Perl_croak(aTHX_ "Overloaded dereference did not return a reference"); \ | |
460 | if (ref != arg && SvRV(ref) != SvRV(arg)) { \ | |
461 | arg = ref; \ | |
462 | goto am_again; \ | |
463 | } \ | |
464 | } STMT_END | |
465 | ||
466 | #define tryAMAGICunDEREF(meth) tryAMAGICunW(meth,setAGAIN,0,(void)0) | |
467 | ||
468 | #define opASSIGN (PL_op->op_flags & OPf_STACKED) | |
469 | #define SETsv(sv) STMT_START { \ | |
470 | if (opASSIGN || (SvFLAGS(TARG) & SVs_PADMY)) \ | |
471 | { sv_setsv(TARG, (sv)); SETTARG; } \ | |
472 | else SETs(sv); } STMT_END | |
473 | ||
474 | #define SETsvUN(sv) STMT_START { \ | |
475 | if (SvFLAGS(TARG) & SVs_PADMY) \ | |
476 | { sv_setsv(TARG, (sv)); SETTARG; } \ | |
477 | else SETs(sv); } STMT_END | |
478 | ||
479 | /* newSVsv does not behave as advertised, so we copy missing | |
480 | * information by hand */ | |
481 | ||
482 | /* SV* ref causes confusion with the member variable | |
483 | changed SV* ref to SV* tmpRef */ | |
484 | #define RvDEEPCP(rv) STMT_START { SV* tmpRef=SvRV(rv); \ | |
485 | if (SvREFCNT(tmpRef)>1) { \ | |
486 | SvRV_set(rv, AMG_CALLun(rv,copy)); \ | |
487 | SvREFCNT_dec(tmpRef); \ | |
488 | } } STMT_END | |
489 | ||
490 | /* | |
491 | =for apidoc mU||LVRET | |
492 | True if this op will be the return value of an lvalue subroutine | |
493 | ||
494 | =cut */ | |
495 | #define LVRET ((PL_op->op_private & OPpMAYBE_LVSUB) && is_lvalue_sub()) | |
496 | ||
497 | /* | |
498 | * Local variables: | |
499 | * c-indentation-style: bsd | |
500 | * c-basic-offset: 4 | |
501 | * indent-tabs-mode: t | |
502 | * End: | |
503 | * | |
504 | * ex: set ts=8 sts=4 sw=4 noet: | |
505 | */ |