1 /* pp.h 2 * 3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008 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 #define PP(s) OP * Perl_##s(pTHX) 12 13 /* 14 =head1 Stack Manipulation Macros 15 16 =for apidoc AmU||SP 17 Stack pointer. This is usually handled by C<xsubpp>. See C<dSP> and 18 C<SPAGAIN>. 19 20 =for apidoc AmU||MARK 21 Stack marker variable for the XSUB. See C<dMARK>. 22 23 =for apidoc Am|void|PUSHMARK|SP 24 Opening bracket for arguments on a callback. See C<PUTBACK> and 25 L<perlcall>. 26 27 =for apidoc Ams||dSP 28 Declares a local copy of perl's stack pointer for the XSUB, available via 29 the C<SP> macro. See C<SP>. 30 31 =for apidoc ms||djSP 32 33 Declare Just C<SP>. This is actually identical to C<dSP>, and declares 34 a local copy of perl's stack pointer, available via the C<SP> macro. 35 See C<SP>. (Available for backward source code compatibility with the 36 old (Perl 5.005) thread model.) 37 38 =for apidoc Ams||dMARK 39 Declare a stack marker variable, C<mark>, for the XSUB. See C<MARK> and 40 C<dORIGMARK>. 41 42 =for apidoc Ams||dORIGMARK 43 Saves the original stack mark for the XSUB. See C<ORIGMARK>. 44 45 =for apidoc AmU||ORIGMARK 46 The original stack mark for the XSUB. See C<dORIGMARK>. 47 48 =for apidoc Ams||SPAGAIN 49 Refetch the stack pointer. Used after a callback. See L<perlcall>. 50 51 =cut */ 52 53 #undef SP /* Solaris 2.7 i386 has this in /usr/include/sys/reg.h */ 54 #define SP sp 55 #define MARK mark 56 #define TARG targ 57 58 #define PUSHMARK(p) \ 59 STMT_START { \ 60 if (UNLIKELY(++PL_markstack_ptr == PL_markstack_max)) \ 61 markstack_grow(); \ 62 *PL_markstack_ptr = (I32)((p) - PL_stack_base);\ 63 } STMT_END 64 65 #define TOPMARK (*PL_markstack_ptr) 66 #define POPMARK (*PL_markstack_ptr--) 67 68 #define dSP SV **sp = PL_stack_sp 69 #define djSP dSP 70 #define dMARK SV **mark = PL_stack_base + POPMARK 71 #define dORIGMARK const I32 origmark = (I32)(mark - PL_stack_base) 72 #define ORIGMARK (PL_stack_base + origmark) 73 74 #define SPAGAIN sp = PL_stack_sp 75 #define MSPAGAIN STMT_START { sp = PL_stack_sp; mark = ORIGMARK; } STMT_END 76 77 #define GETTARGETSTACKED targ = (PL_op->op_flags & OPf_STACKED ? POPs : PAD_SV(PL_op->op_targ)) 78 #define dTARGETSTACKED SV * GETTARGETSTACKED 79 80 #define GETTARGET targ = PAD_SV(PL_op->op_targ) 81 #define dTARGET SV * GETTARGET 82 83 #define GETATARGET targ = (PL_op->op_flags & OPf_STACKED ? sp[-1] : PAD_SV(PL_op->op_targ)) 84 #define dATARGET SV * GETATARGET 85 86 #define dTARG SV *targ 87 88 #define NORMAL PL_op->op_next 89 #define DIE return Perl_die 90 91 /* 92 =for apidoc Ams||PUTBACK 93 Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>. 94 See C<PUSHMARK> and L<perlcall> for other uses. 95 96 =for apidoc Amn|SV*|POPs 97 Pops an SV off the stack. 98 99 =for apidoc Amn|char*|POPp 100 Pops a string off the stack. 101 102 =for apidoc Amn|char*|POPpx 103 Pops a string off the stack. Identical to POPp. There are two names for 104 historical reasons. 105 106 =for apidoc Amn|char*|POPpbytex 107 Pops a string off the stack which must consist of bytes i.e. characters < 256. 108 109 =for apidoc Amn|NV|POPn 110 Pops a double off the stack. 111 112 =for apidoc Amn|IV|POPi 113 Pops an integer off the stack. 114 115 =for apidoc Amn|long|POPl 116 Pops a long off the stack. 117 118 =cut 119 */ 120 121 #define PUTBACK PL_stack_sp = sp 122 #define RETURN return (PUTBACK, NORMAL) 123 #define RETURNOP(o) return (PUTBACK, o) 124 #define RETURNX(x) return (x, PUTBACK, NORMAL) 125 126 #define POPs (*sp--) 127 #define POPp POPpx 128 #define POPpx (SvPVx_nolen(POPs)) 129 #define POPpconstx (SvPVx_nolen_const(POPs)) 130 #define POPpbytex (SvPVbytex_nolen(POPs)) 131 #define POPn (SvNVx(POPs)) 132 #define POPi ((IV)SvIVx(POPs)) 133 #define POPu ((UV)SvUVx(POPs)) 134 #define POPl ((long)SvIVx(POPs)) 135 #define POPul ((unsigned long)SvIVx(POPs)) 136 137 #define TOPs (*sp) 138 #define TOPm1s (*(sp-1)) 139 #define TOPp1s (*(sp+1)) 140 #define TOPp TOPpx 141 #define TOPpx (SvPV_nolen(TOPs)) 142 #define TOPn (SvNV(TOPs)) 143 #define TOPi ((IV)SvIV(TOPs)) 144 #define TOPu ((UV)SvUV(TOPs)) 145 #define TOPl ((long)SvIV(TOPs)) 146 #define TOPul ((unsigned long)SvUV(TOPs)) 147 148 /* Go to some pains in the rare event that we must extend the stack. */ 149 150 /* 151 =for apidoc Am|void|EXTEND|SP|SSize_t nitems 152 Used to extend the argument stack for an XSUB's return values. Once 153 used, guarantees that there is room for at least C<nitems> to be pushed 154 onto the stack. 155 156 =for apidoc Am|void|PUSHs|SV* sv 157 Push an SV onto the stack. The stack must have room for this element. 158 Does not handle 'set' magic. Does not use C<TARG>. See also C<PUSHmortal>, 159 C<XPUSHs> and C<XPUSHmortal>. 160 161 =for apidoc Am|void|PUSHp|char* str|STRLEN len 162 Push a string onto the stack. The stack must have room for this element. 163 The C<len> indicates the length of the string. Handles 'set' magic. Uses 164 C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to declare it. Do not 165 call multiple C<TARG>-oriented macros to return lists from XSUB's - see 166 C<mPUSHp> instead. See also C<XPUSHp> and C<mXPUSHp>. 167 168 =for apidoc Am|void|PUSHn|NV nv 169 Push a double onto the stack. The stack must have room for this element. 170 Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be 171 called to declare it. Do not call multiple C<TARG>-oriented macros to 172 return lists from XSUB's - see C<mPUSHn> instead. See also C<XPUSHn> and 173 C<mXPUSHn>. 174 175 =for apidoc Am|void|PUSHi|IV iv 176 Push an integer onto the stack. The stack must have room for this element. 177 Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be 178 called to declare it. Do not call multiple C<TARG>-oriented macros to 179 return lists from XSUB's - see C<mPUSHi> instead. See also C<XPUSHi> and 180 C<mXPUSHi>. 181 182 =for apidoc Am|void|PUSHu|UV uv 183 Push an unsigned integer onto the stack. The stack must have room for this 184 element. Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> 185 should be called to declare it. Do not call multiple C<TARG>-oriented 186 macros to return lists from XSUB's - see C<mPUSHu> instead. See also 187 C<XPUSHu> and C<mXPUSHu>. 188 189 =for apidoc Am|void|XPUSHs|SV* sv 190 Push an SV onto the stack, extending the stack if necessary. Does not 191 handle 'set' magic. Does not use C<TARG>. See also C<XPUSHmortal>, 192 C<PUSHs> and C<PUSHmortal>. 193 194 =for apidoc Am|void|XPUSHp|char* str|STRLEN len 195 Push a string onto the stack, extending the stack if necessary. The C<len> 196 indicates the length of the string. Handles 'set' magic. Uses C<TARG>, so 197 C<dTARGET> or C<dXSTARG> should be called to declare it. Do not call 198 multiple C<TARG>-oriented macros to return lists from XSUB's - see 199 C<mXPUSHp> instead. See also C<PUSHp> and C<mPUSHp>. 200 201 =for apidoc Am|void|XPUSHn|NV nv 202 Push a double onto the stack, extending the stack if necessary. Handles 203 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to 204 declare it. Do not call multiple C<TARG>-oriented macros to return lists 205 from XSUB's - see C<mXPUSHn> instead. See also C<PUSHn> and C<mPUSHn>. 206 207 =for apidoc Am|void|XPUSHi|IV iv 208 Push an integer onto the stack, extending the stack if necessary. Handles 209 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to 210 declare it. Do not call multiple C<TARG>-oriented macros to return lists 211 from XSUB's - see C<mXPUSHi> instead. See also C<PUSHi> and C<mPUSHi>. 212 213 =for apidoc Am|void|XPUSHu|UV uv 214 Push an unsigned integer onto the stack, extending the stack if necessary. 215 Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be 216 called to declare it. Do not call multiple C<TARG>-oriented macros to 217 return lists from XSUB's - see C<mXPUSHu> instead. See also C<PUSHu> and 218 C<mPUSHu>. 219 220 =for apidoc Am|void|mPUSHs|SV* sv 221 Push an SV onto the stack and mortalizes the SV. The stack must have room 222 for this element. Does not use C<TARG>. See also C<PUSHs> and C<mXPUSHs>. 223 224 =for apidoc Am|void|PUSHmortal 225 Push a new mortal SV onto the stack. The stack must have room for this 226 element. Does not use C<TARG>. See also C<PUSHs>, C<XPUSHmortal> and C<XPUSHs>. 227 228 =for apidoc Am|void|mPUSHp|char* str|STRLEN len 229 Push a string onto the stack. The stack must have room for this element. 230 The C<len> indicates the length of the string. Does not use C<TARG>. 231 See also C<PUSHp>, C<mXPUSHp> and C<XPUSHp>. 232 233 =for apidoc Am|void|mPUSHn|NV nv 234 Push a double onto the stack. The stack must have room for this element. 235 Does not use C<TARG>. See also C<PUSHn>, C<mXPUSHn> and C<XPUSHn>. 236 237 =for apidoc Am|void|mPUSHi|IV iv 238 Push an integer onto the stack. The stack must have room for this element. 239 Does not use C<TARG>. See also C<PUSHi>, C<mXPUSHi> and C<XPUSHi>. 240 241 =for apidoc Am|void|mPUSHu|UV uv 242 Push an unsigned integer onto the stack. The stack must have room for this 243 element. Does not use C<TARG>. See also C<PUSHu>, C<mXPUSHu> and C<XPUSHu>. 244 245 =for apidoc Am|void|mXPUSHs|SV* sv 246 Push an SV onto the stack, extending the stack if necessary and mortalizes 247 the SV. Does not use C<TARG>. See also C<XPUSHs> and C<mPUSHs>. 248 249 =for apidoc Am|void|XPUSHmortal 250 Push a new mortal SV onto the stack, extending the stack if necessary. 251 Does not use C<TARG>. See also C<XPUSHs>, C<PUSHmortal> and C<PUSHs>. 252 253 =for apidoc Am|void|mXPUSHp|char* str|STRLEN len 254 Push a string onto the stack, extending the stack if necessary. The C<len> 255 indicates the length of the string. Does not use C<TARG>. See also C<XPUSHp>, 256 C<mPUSHp> and C<PUSHp>. 257 258 =for apidoc Am|void|mXPUSHn|NV nv 259 Push a double onto the stack, extending the stack if necessary. 260 Does not use C<TARG>. See also C<XPUSHn>, C<mPUSHn> and C<PUSHn>. 261 262 =for apidoc Am|void|mXPUSHi|IV iv 263 Push an integer onto the stack, extending the stack if necessary. 264 Does not use C<TARG>. See also C<XPUSHi>, C<mPUSHi> and C<PUSHi>. 265 266 =for apidoc Am|void|mXPUSHu|UV uv 267 Push an unsigned integer onto the stack, extending the stack if necessary. 268 Does not use C<TARG>. See also C<XPUSHu>, C<mPUSHu> and C<PUSHu>. 269 270 =cut 271 */ 272 273 #ifdef STRESS_REALLOC 274 # define EXTEND(p,n) (void)(sp = stack_grow(sp,p, (SSize_t)(n))) 275 /* Same thing, but update mark register too. */ 276 # define MEXTEND(p,n) STMT_START { \ 277 const int markoff = mark - PL_stack_base; \ 278 sp = stack_grow(sp,p,(SSize_t) (n)); \ 279 mark = PL_stack_base + markoff; \ 280 } STMT_END 281 #else 282 # define EXTEND(p,n) (void)(UNLIKELY(PL_stack_max - p < (SSize_t)(n)) && \ 283 (sp = stack_grow(sp,p, (SSize_t) (n)))) 284 285 /* Same thing, but update mark register too. */ 286 # define MEXTEND(p,n) STMT_START {if (UNLIKELY(PL_stack_max - p < (int)(n))) {\ 287 const int markoff = mark - PL_stack_base; \ 288 sp = stack_grow(sp,p,(SSize_t) (n)); \ 289 mark = PL_stack_base + markoff; \ 290 } } STMT_END 291 #endif 292 293 #define PUSHs(s) (*++sp = (s)) 294 #define PUSHTARG STMT_START { SvSETMAGIC(TARG); PUSHs(TARG); } STMT_END 295 #define PUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); PUSHTARG; } STMT_END 296 #define PUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); PUSHTARG; } STMT_END 297 #define PUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); PUSHTARG; } STMT_END 298 #define PUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); PUSHTARG; } STMT_END 299 300 #define XPUSHs(s) (EXTEND(sp,1), *++sp = (s)) 301 #define XPUSHTARG STMT_START { SvSETMAGIC(TARG); XPUSHs(TARG); } STMT_END 302 #define XPUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); XPUSHTARG; } STMT_END 303 #define XPUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); XPUSHTARG; } STMT_END 304 #define XPUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); XPUSHTARG; } STMT_END 305 #define XPUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); XPUSHTARG; } STMT_END 306 #define XPUSHundef STMT_START { SvOK_off(TARG); XPUSHs(TARG); } STMT_END 307 308 #define mPUSHs(s) PUSHs(sv_2mortal(s)) 309 #define PUSHmortal PUSHs(sv_newmortal()) 310 #define mPUSHp(p,l) PUSHs(newSVpvn_flags((p), (l), SVs_TEMP)) 311 #define mPUSHn(n) sv_setnv(PUSHmortal, (NV)(n)) 312 #define mPUSHi(i) sv_setiv(PUSHmortal, (IV)(i)) 313 #define mPUSHu(u) sv_setuv(PUSHmortal, (UV)(u)) 314 315 #define mXPUSHs(s) XPUSHs(sv_2mortal(s)) 316 #define XPUSHmortal XPUSHs(sv_newmortal()) 317 #define mXPUSHp(p,l) STMT_START { EXTEND(sp,1); mPUSHp((p), (l)); } STMT_END 318 #define mXPUSHn(n) STMT_START { EXTEND(sp,1); sv_setnv(PUSHmortal, (NV)(n)); } STMT_END 319 #define mXPUSHi(i) STMT_START { EXTEND(sp,1); sv_setiv(PUSHmortal, (IV)(i)); } STMT_END 320 #define mXPUSHu(u) STMT_START { EXTEND(sp,1); sv_setuv(PUSHmortal, (UV)(u)); } STMT_END 321 322 #define SETs(s) (*sp = s) 323 #define SETTARG STMT_START { SvSETMAGIC(TARG); SETs(TARG); } STMT_END 324 #define SETp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); SETTARG; } STMT_END 325 #define SETn(n) STMT_START { sv_setnv(TARG, (NV)(n)); SETTARG; } STMT_END 326 #define SETi(i) STMT_START { sv_setiv(TARG, (IV)(i)); SETTARG; } STMT_END 327 #define SETu(u) STMT_START { sv_setuv(TARG, (UV)(u)); SETTARG; } STMT_END 328 329 #define dTOPss SV *sv = TOPs 330 #define dPOPss SV *sv = POPs 331 #define dTOPnv NV value = TOPn 332 #define dPOPnv NV value = POPn 333 #define dPOPnv_nomg NV value = (sp--, SvNV_nomg(TOPp1s)) 334 #define dTOPiv IV value = TOPi 335 #define dPOPiv IV value = POPi 336 #define dTOPuv UV value = TOPu 337 #define dPOPuv UV value = POPu 338 339 #define dPOPXssrl(X) SV *right = POPs; SV *left = CAT2(X,s) 340 #define dPOPXnnrl(X) NV right = POPn; NV left = CAT2(X,n) 341 #define dPOPXiirl(X) IV right = POPi; IV left = CAT2(X,i) 342 343 #define USE_LEFT(sv) \ 344 (SvOK(sv) || !(PL_op->op_flags & OPf_STACKED)) 345 #define dPOPXiirl_ul_nomg(X) \ 346 IV right = (sp--, SvIV_nomg(TOPp1s)); \ 347 SV *leftsv = CAT2(X,s); \ 348 IV left = USE_LEFT(leftsv) ? SvIV_nomg(leftsv) : 0 349 350 #define dPOPPOPssrl dPOPXssrl(POP) 351 #define dPOPPOPnnrl dPOPXnnrl(POP) 352 #define dPOPPOPiirl dPOPXiirl(POP) 353 354 #define dPOPTOPssrl dPOPXssrl(TOP) 355 #define dPOPTOPnnrl dPOPXnnrl(TOP) 356 #define dPOPTOPnnrl_nomg \ 357 NV right = SvNV_nomg(TOPs); NV left = (sp--, SvNV_nomg(TOPs)) 358 #define dPOPTOPiirl dPOPXiirl(TOP) 359 #define dPOPTOPiirl_ul_nomg dPOPXiirl_ul_nomg(TOP) 360 #define dPOPTOPiirl_nomg \ 361 IV right = SvIV_nomg(TOPs); IV left = (sp--, SvIV_nomg(TOPs)) 362 363 #define RETPUSHYES RETURNX(PUSHs(&PL_sv_yes)) 364 #define RETPUSHNO RETURNX(PUSHs(&PL_sv_no)) 365 #define RETPUSHUNDEF RETURNX(PUSHs(&PL_sv_undef)) 366 367 #define RETSETYES RETURNX(SETs(&PL_sv_yes)) 368 #define RETSETNO RETURNX(SETs(&PL_sv_no)) 369 #define RETSETUNDEF RETURNX(SETs(&PL_sv_undef)) 370 371 #define ARGTARG PL_op->op_targ 372 373 /* See OPpTARGET_MY: */ 374 #define MAXARG (PL_op->op_private & 15) 375 376 #define SWITCHSTACK(f,t) \ 377 STMT_START { \ 378 AvFILLp(f) = sp - PL_stack_base; \ 379 PL_stack_base = AvARRAY(t); \ 380 PL_stack_max = PL_stack_base + AvMAX(t); \ 381 sp = PL_stack_sp = PL_stack_base + AvFILLp(t); \ 382 PL_curstack = t; \ 383 } STMT_END 384 385 #define EXTEND_MORTAL(n) \ 386 STMT_START { \ 387 if (UNLIKELY(PL_tmps_ix + (n) >= PL_tmps_max)) \ 388 tmps_grow(n); \ 389 } STMT_END 390 391 #define AMGf_noright 1 392 #define AMGf_noleft 2 393 #define AMGf_assign 4 394 #define AMGf_unary 8 395 #define AMGf_numeric 0x10 /* for Perl_try_amagic_bin */ 396 #define AMGf_set 0x20 /* for Perl_try_amagic_bin */ 397 #define AMGf_want_list 0x40 398 399 400 /* do SvGETMAGIC on the stack args before checking for overload */ 401 402 #define tryAMAGICun_MG(method, flags) STMT_START { \ 403 if ( UNLIKELY((SvFLAGS(TOPs) & (SVf_ROK|SVs_GMG))) \ 404 && Perl_try_amagic_un(aTHX_ method, flags)) \ 405 return NORMAL; \ 406 } STMT_END 407 #define tryAMAGICbin_MG(method, flags) STMT_START { \ 408 if ( UNLIKELY(((SvFLAGS(TOPm1s)|SvFLAGS(TOPs)) & (SVf_ROK|SVs_GMG))) \ 409 && Perl_try_amagic_bin(aTHX_ method, flags)) \ 410 return NORMAL; \ 411 } STMT_END 412 413 #define AMG_CALLunary(sv,meth) \ 414 amagic_call(sv,&PL_sv_undef, meth, AMGf_noright | AMGf_unary) 415 416 /* No longer used in core. Use AMG_CALLunary instead */ 417 #define AMG_CALLun(sv,meth) AMG_CALLunary(sv, CAT2(meth,_amg)) 418 419 #define tryAMAGICunTARGETlist(meth, jump) \ 420 STMT_START { \ 421 dSP; \ 422 SV *tmpsv; \ 423 SV *arg= *sp; \ 424 int gimme = GIMME_V; \ 425 if (UNLIKELY(SvAMAGIC(arg) && \ 426 (tmpsv = amagic_call(arg, &PL_sv_undef, meth, \ 427 AMGf_want_list | AMGf_noright \ 428 |AMGf_unary)))) \ 429 { \ 430 SPAGAIN; \ 431 if (gimme == G_VOID) { \ 432 (void)POPs; /* XXX ??? */ \ 433 } \ 434 else if (gimme == G_ARRAY) { \ 435 SSize_t i; \ 436 SSize_t len; \ 437 assert(SvTYPE(tmpsv) == SVt_PVAV); \ 438 len = av_tindex((AV *)tmpsv) + 1; \ 439 (void)POPs; /* get rid of the arg */ \ 440 EXTEND(sp, len); \ 441 for (i = 0; i < len; ++i) \ 442 PUSHs(av_shift((AV *)tmpsv)); \ 443 } \ 444 else { /* AMGf_want_scalar */ \ 445 dATARGET; /* just use the arg's location */ \ 446 sv_setsv(TARG, tmpsv); \ 447 if (opASSIGN) \ 448 sp--; \ 449 SETTARG; \ 450 } \ 451 PUTBACK; \ 452 if (jump) { \ 453 OP *jump_o = NORMAL->op_next; \ 454 while (jump_o->op_type == OP_NULL) \ 455 jump_o = jump_o->op_next; \ 456 assert(jump_o->op_type == OP_ENTERSUB); \ 457 PL_markstack_ptr--; \ 458 return jump_o->op_next; \ 459 } \ 460 return NORMAL; \ 461 } \ 462 } STMT_END 463 464 /* This is no longer used anywhere in the core. You might wish to consider 465 calling amagic_deref_call() directly, as it has a cleaner interface. */ 466 #define tryAMAGICunDEREF(meth) \ 467 STMT_START { \ 468 sv = amagic_deref_call(*sp, CAT2(meth,_amg)); \ 469 SPAGAIN; \ 470 } STMT_END 471 472 473 #define opASSIGN (PL_op->op_flags & OPf_STACKED) 474 #define SETsv(sv) STMT_START { \ 475 if (opASSIGN || (SvFLAGS(TARG) & SVs_PADMY)) \ 476 { sv_setsv(TARG, (sv)); SETTARG; } \ 477 else SETs(sv); } STMT_END 478 479 #define SETsvUN(sv) STMT_START { \ 480 if (SvFLAGS(TARG) & SVs_PADMY) \ 481 { sv_setsv(TARG, (sv)); SETTARG; } \ 482 else SETs(sv); } STMT_END 483 484 /* 485 =for apidoc mU||LVRET 486 True if this op will be the return value of an lvalue subroutine 487 488 =cut */ 489 #define LVRET ((PL_op->op_private & OPpMAYBE_LVSUB) && is_lvalue_sub()) 490 491 #define SvCANEXISTDELETE(sv) \ 492 (!SvRMAGICAL(sv) \ 493 || !(mg = mg_find((const SV *) sv, PERL_MAGIC_tied)) \ 494 || ( (stash = SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(sv), mg)))) \ 495 && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) \ 496 && gv_fetchmethod_autoload(stash, "DELETE", TRUE) \ 497 ) \ 498 ) 499 500 #ifdef PERL_CORE 501 502 /* These are just for Perl_tied_method(), which is not part of the public API. 503 Use 0x04 rather than the next available bit, to help the compiler if the 504 architecture can generate more efficient instructions. */ 505 # define TIED_METHOD_MORTALIZE_NOT_NEEDED 0x04 506 # define TIED_METHOD_ARGUMENTS_ON_STACK 0x08 507 # define TIED_METHOD_SAY 0x10 508 509 /* Used in various places that need to dereference a glob or globref */ 510 # define MAYBE_DEREF_GV_flags(sv,phlags) \ 511 ( \ 512 (void)(phlags & SV_GMAGIC && (SvGETMAGIC(sv),0)), \ 513 isGV_with_GP(sv) \ 514 ? (GV *)(sv) \ 515 : SvROK(sv) && SvTYPE(SvRV(sv)) <= SVt_PVLV && \ 516 (SvGETMAGIC(SvRV(sv)), isGV_with_GP(SvRV(sv))) \ 517 ? (GV *)SvRV(sv) \ 518 : NULL \ 519 ) 520 # define MAYBE_DEREF_GV(sv) MAYBE_DEREF_GV_flags(sv,SV_GMAGIC) 521 # define MAYBE_DEREF_GV_nomg(sv) MAYBE_DEREF_GV_flags(sv,0) 522 523 # define FIND_RUNCV_padid_eq 1 524 # define FIND_RUNCV_level_eq 2 525 526 #endif 527 528 /* 529 * Local variables: 530 * c-indentation-style: bsd 531 * c-basic-offset: 4 532 * indent-tabs-mode: nil 533 * End: 534 * 535 * ex: set ts=8 sts=4 sw=4 et: 536 */ 537