| 1 | /* pp.h |
|---|
| 2 | * |
|---|
| 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, |
|---|
| 4 | * 2000, 2001, 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 Ams||PUSHMARK |
|---|
| 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) if (++PL_markstack_ptr == PL_markstack_max) \ |
|---|
| 67 | markstack_grow(); \ |
|---|
| 68 | *PL_markstack_ptr = (p) - PL_stack_base |
|---|
| 69 | |
|---|
| 70 | #define TOPMARK (*PL_markstack_ptr) |
|---|
| 71 | #define POPMARK (*PL_markstack_ptr--) |
|---|
| 72 | |
|---|
| 73 | #define dSP register SV **sp = PL_stack_sp |
|---|
| 74 | #define djSP dSP |
|---|
| 75 | #define dMARK register SV **mark = PL_stack_base + POPMARK |
|---|
| 76 | #define dORIGMARK I32 origmark = mark - PL_stack_base |
|---|
| 77 | #define SETORIGMARK origmark = mark - PL_stack_base |
|---|
| 78 | #define ORIGMARK (PL_stack_base + origmark) |
|---|
| 79 | |
|---|
| 80 | #define SPAGAIN sp = PL_stack_sp |
|---|
| 81 | #define MSPAGAIN sp = PL_stack_sp; mark = ORIGMARK |
|---|
| 82 | |
|---|
| 83 | #define GETTARGETSTACKED targ = (PL_op->op_flags & OPf_STACKED ? POPs : PAD_SV(PL_op->op_targ)) |
|---|
| 84 | #define dTARGETSTACKED SV * GETTARGETSTACKED |
|---|
| 85 | |
|---|
| 86 | #define GETTARGET targ = PAD_SV(PL_op->op_targ) |
|---|
| 87 | #define dTARGET SV * GETTARGET |
|---|
| 88 | |
|---|
| 89 | #define GETATARGET targ = (PL_op->op_flags & OPf_STACKED ? sp[-1] : PAD_SV(PL_op->op_targ)) |
|---|
| 90 | #define dATARGET SV * GETATARGET |
|---|
| 91 | |
|---|
| 92 | #define dTARG SV *targ |
|---|
| 93 | |
|---|
| 94 | #define NORMAL PL_op->op_next |
|---|
| 95 | #define DIE return Perl_die |
|---|
| 96 | |
|---|
| 97 | /* |
|---|
| 98 | =for apidoc Ams||PUTBACK |
|---|
| 99 | Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>. |
|---|
| 100 | See C<PUSHMARK> and L<perlcall> for other uses. |
|---|
| 101 | |
|---|
| 102 | =for apidoc Amn|SV*|POPs |
|---|
| 103 | Pops an SV off the stack. |
|---|
| 104 | |
|---|
| 105 | =for apidoc Amn|char*|POPp |
|---|
| 106 | Pops a string off the stack. Deprecated. New code should provide |
|---|
| 107 | a STRLEN n_a and use POPpx. |
|---|
| 108 | |
|---|
| 109 | =for apidoc Amn|char*|POPpx |
|---|
| 110 | Pops a string off the stack. |
|---|
| 111 | Requires a variable STRLEN n_a in scope. |
|---|
| 112 | |
|---|
| 113 | =for apidoc Amn|char*|POPpbytex |
|---|
| 114 | Pops a string off the stack which must consist of bytes i.e. characters < 256. |
|---|
| 115 | Requires a variable STRLEN n_a in scope. |
|---|
| 116 | |
|---|
| 117 | =for apidoc Amn|NV|POPn |
|---|
| 118 | Pops a double off the stack. |
|---|
| 119 | |
|---|
| 120 | =for apidoc Amn|IV|POPi |
|---|
| 121 | Pops an integer off the stack. |
|---|
| 122 | |
|---|
| 123 | =for apidoc Amn|long|POPl |
|---|
| 124 | Pops a long off the stack. |
|---|
| 125 | |
|---|
| 126 | =cut |
|---|
| 127 | */ |
|---|
| 128 | |
|---|
| 129 | #define PUTBACK PL_stack_sp = sp |
|---|
| 130 | #define RETURN return PUTBACK, NORMAL |
|---|
| 131 | #define RETURNOP(o) return PUTBACK, o |
|---|
| 132 | #define RETURNX(x) return x, PUTBACK, NORMAL |
|---|
| 133 | |
|---|
| 134 | #define POPs (*sp--) |
|---|
| 135 | #define POPp (SvPVx(POPs, PL_na)) /* deprecated */ |
|---|
| 136 | #define POPpx (SvPVx(POPs, n_a)) |
|---|
| 137 | #define POPpbytex (SvPVbytex(POPs, n_a)) |
|---|
| 138 | #define POPn (SvNVx(POPs)) |
|---|
| 139 | #define POPi ((IV)SvIVx(POPs)) |
|---|
| 140 | #define POPu ((UV)SvUVx(POPs)) |
|---|
| 141 | #define POPl ((long)SvIVx(POPs)) |
|---|
| 142 | #define POPul ((unsigned long)SvIVx(POPs)) |
|---|
| 143 | #ifdef HAS_QUAD |
|---|
| 144 | #define POPq ((Quad_t)SvIVx(POPs)) |
|---|
| 145 | #define POPuq ((Uquad_t)SvUVx(POPs)) |
|---|
| 146 | #endif |
|---|
| 147 | |
|---|
| 148 | #define TOPs (*sp) |
|---|
| 149 | #define TOPm1s (*(sp-1)) |
|---|
| 150 | #define TOPp1s (*(sp+1)) |
|---|
| 151 | #define TOPp (SvPV(TOPs, PL_na)) /* deprecated */ |
|---|
| 152 | #define TOPpx (SvPV(TOPs, n_a)) |
|---|
| 153 | #define TOPn (SvNV(TOPs)) |
|---|
| 154 | #define TOPi ((IV)SvIV(TOPs)) |
|---|
| 155 | #define TOPu ((UV)SvUV(TOPs)) |
|---|
| 156 | #define TOPl ((long)SvIV(TOPs)) |
|---|
| 157 | #define TOPul ((unsigned long)SvUV(TOPs)) |
|---|
| 158 | #ifdef HAS_QUAD |
|---|
| 159 | #define TOPq ((Quad_t)SvIV(TOPs)) |
|---|
| 160 | #define TOPuq ((Uquad_t)SvUV(TOPs)) |
|---|
| 161 | #endif |
|---|
| 162 | |
|---|
| 163 | /* Go to some pains in the rare event that we must extend the stack. */ |
|---|
| 164 | |
|---|
| 165 | /* |
|---|
| 166 | =for apidoc Am|void|EXTEND|SP|int nitems |
|---|
| 167 | Used to extend the argument stack for an XSUB's return values. Once |
|---|
| 168 | used, guarantees that there is room for at least C<nitems> to be pushed |
|---|
| 169 | onto the stack. |
|---|
| 170 | |
|---|
| 171 | =for apidoc Am|void|PUSHs|SV* sv |
|---|
| 172 | Push an SV onto the stack. The stack must have room for this element. |
|---|
| 173 | Does not handle 'set' magic. See C<XPUSHs>. |
|---|
| 174 | |
|---|
| 175 | =for apidoc Am|void|PUSHp|char* str|STRLEN len |
|---|
| 176 | Push a string onto the stack. The stack must have room for this element. |
|---|
| 177 | The C<len> indicates the length of the string. Handles 'set' magic. See |
|---|
| 178 | C<XPUSHp>. |
|---|
| 179 | |
|---|
| 180 | =for apidoc Am|void|PUSHn|NV nv |
|---|
| 181 | Push a double onto the stack. The stack must have room for this element. |
|---|
| 182 | Handles 'set' magic. See C<XPUSHn>. |
|---|
| 183 | |
|---|
| 184 | =for apidoc Am|void|PUSHi|IV iv |
|---|
| 185 | Push an integer onto the stack. The stack must have room for this element. |
|---|
| 186 | Handles 'set' magic. See C<XPUSHi>. |
|---|
| 187 | |
|---|
| 188 | =for apidoc Am|void|PUSHu|UV uv |
|---|
| 189 | Push an unsigned integer onto the stack. The stack must have room for this |
|---|
| 190 | element. See C<XPUSHu>. |
|---|
| 191 | |
|---|
| 192 | =for apidoc Am|void|XPUSHs|SV* sv |
|---|
| 193 | Push an SV onto the stack, extending the stack if necessary. Does not |
|---|
| 194 | handle 'set' magic. See C<PUSHs>. |
|---|
| 195 | |
|---|
| 196 | =for apidoc Am|void|XPUSHp|char* str|STRLEN len |
|---|
| 197 | Push a string onto the stack, extending the stack if necessary. The C<len> |
|---|
| 198 | indicates the length of the string. Handles 'set' magic. See |
|---|
| 199 | C<PUSHp>. |
|---|
| 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. See C<PUSHn>. |
|---|
| 204 | |
|---|
| 205 | =for apidoc Am|void|XPUSHi|IV iv |
|---|
| 206 | Push an integer onto the stack, extending the stack if necessary. Handles |
|---|
| 207 | 'set' magic. See C<PUSHi>. |
|---|
| 208 | |
|---|
| 209 | =for apidoc Am|void|XPUSHu|UV uv |
|---|
| 210 | Push an unsigned integer onto the stack, extending the stack if necessary. |
|---|
| 211 | See C<PUSHu>. |
|---|
| 212 | |
|---|
| 213 | =cut |
|---|
| 214 | */ |
|---|
| 215 | |
|---|
| 216 | #define EXTEND(p,n) STMT_START { if (PL_stack_max - p < (int)(n)) { \ |
|---|
| 217 | sp = stack_grow(sp,p, (int) (n)); \ |
|---|
| 218 | } } STMT_END |
|---|
| 219 | |
|---|
| 220 | /* Same thing, but update mark register too. */ |
|---|
| 221 | #define MEXTEND(p,n) STMT_START {if (PL_stack_max - p < (int)(n)) { \ |
|---|
| 222 | int markoff = mark - PL_stack_base; \ |
|---|
| 223 | sp = stack_grow(sp,p,(int) (n)); \ |
|---|
| 224 | mark = PL_stack_base + markoff; \ |
|---|
| 225 | } } STMT_END |
|---|
| 226 | |
|---|
| 227 | #define PUSHs(s) (*++sp = (s)) |
|---|
| 228 | #define PUSHTARG STMT_START { SvSETMAGIC(TARG); PUSHs(TARG); } STMT_END |
|---|
| 229 | #define PUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); PUSHTARG; } STMT_END |
|---|
| 230 | #define PUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); PUSHTARG; } STMT_END |
|---|
| 231 | #define PUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); PUSHTARG; } STMT_END |
|---|
| 232 | #define PUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); PUSHTARG; } STMT_END |
|---|
| 233 | |
|---|
| 234 | #define XPUSHs(s) STMT_START { EXTEND(sp,1); (*++sp = (s)); } STMT_END |
|---|
| 235 | #define XPUSHTARG STMT_START { SvSETMAGIC(TARG); XPUSHs(TARG); } STMT_END |
|---|
| 236 | #define XPUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); XPUSHTARG; } STMT_END |
|---|
| 237 | #define XPUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); XPUSHTARG; } STMT_END |
|---|
| 238 | #define XPUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); XPUSHTARG; } STMT_END |
|---|
| 239 | #define XPUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); XPUSHTARG; } STMT_END |
|---|
| 240 | #define XPUSHundef STMT_START { SvOK_off(TARG); XPUSHs(TARG); } STMT_END |
|---|
| 241 | |
|---|
| 242 | #define SETs(s) (*sp = s) |
|---|
| 243 | #define SETTARG STMT_START { SvSETMAGIC(TARG); SETs(TARG); } STMT_END |
|---|
| 244 | #define SETp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); SETTARG; } STMT_END |
|---|
| 245 | #define SETn(n) STMT_START { sv_setnv(TARG, (NV)(n)); SETTARG; } STMT_END |
|---|
| 246 | #define SETi(i) STMT_START { sv_setiv(TARG, (IV)(i)); SETTARG; } STMT_END |
|---|
| 247 | #define SETu(u) STMT_START { sv_setuv(TARG, (UV)(u)); SETTARG; } STMT_END |
|---|
| 248 | |
|---|
| 249 | #define dTOPss SV *sv = TOPs |
|---|
| 250 | #define dPOPss SV *sv = POPs |
|---|
| 251 | #define dTOPnv NV value = TOPn |
|---|
| 252 | #define dPOPnv NV value = POPn |
|---|
| 253 | #define dTOPiv IV value = TOPi |
|---|
| 254 | #define dPOPiv IV value = POPi |
|---|
| 255 | #define dTOPuv UV value = TOPu |
|---|
| 256 | #define dPOPuv UV value = POPu |
|---|
| 257 | #ifdef HAS_QUAD |
|---|
| 258 | #define dTOPqv Quad_t value = TOPu |
|---|
| 259 | #define dPOPqv Quad_t value = POPu |
|---|
| 260 | #define dTOPuqv Uquad_t value = TOPuq |
|---|
| 261 | #define dPOPuqv Uquad_t value = POPuq |
|---|
| 262 | #endif |
|---|
| 263 | |
|---|
| 264 | #define dPOPXssrl(X) SV *right = POPs; SV *left = CAT2(X,s) |
|---|
| 265 | #define dPOPXnnrl(X) NV right = POPn; NV left = CAT2(X,n) |
|---|
| 266 | #define dPOPXiirl(X) IV right = POPi; IV left = CAT2(X,i) |
|---|
| 267 | |
|---|
| 268 | #define USE_LEFT(sv) \ |
|---|
| 269 | (SvOK(sv) || SvGMAGICAL(sv) || !(PL_op->op_flags & OPf_STACKED)) |
|---|
| 270 | #define dPOPXnnrl_ul(X) \ |
|---|
| 271 | NV right = POPn; \ |
|---|
| 272 | SV *leftsv = CAT2(X,s); \ |
|---|
| 273 | NV left = USE_LEFT(leftsv) ? SvNV(leftsv) : 0.0 |
|---|
| 274 | #define dPOPXiirl_ul(X) \ |
|---|
| 275 | IV right = POPi; \ |
|---|
| 276 | SV *leftsv = CAT2(X,s); \ |
|---|
| 277 | IV left = USE_LEFT(leftsv) ? SvIV(leftsv) : 0 |
|---|
| 278 | |
|---|
| 279 | #define dPOPPOPssrl dPOPXssrl(POP) |
|---|
| 280 | #define dPOPPOPnnrl dPOPXnnrl(POP) |
|---|
| 281 | #define dPOPPOPnnrl_ul dPOPXnnrl_ul(POP) |
|---|
| 282 | #define dPOPPOPiirl dPOPXiirl(POP) |
|---|
| 283 | #define dPOPPOPiirl_ul dPOPXiirl_ul(POP) |
|---|
| 284 | |
|---|
| 285 | #define dPOPTOPssrl dPOPXssrl(TOP) |
|---|
| 286 | #define dPOPTOPnnrl dPOPXnnrl(TOP) |
|---|
| 287 | #define dPOPTOPnnrl_ul dPOPXnnrl_ul(TOP) |
|---|
| 288 | #define dPOPTOPiirl dPOPXiirl(TOP) |
|---|
| 289 | #define dPOPTOPiirl_ul dPOPXiirl_ul(TOP) |
|---|
| 290 | |
|---|
| 291 | #define RETPUSHYES RETURNX(PUSHs(&PL_sv_yes)) |
|---|
| 292 | #define RETPUSHNO RETURNX(PUSHs(&PL_sv_no)) |
|---|
| 293 | #define RETPUSHUNDEF RETURNX(PUSHs(&PL_sv_undef)) |
|---|
| 294 | |
|---|
| 295 | #define RETSETYES RETURNX(SETs(&PL_sv_yes)) |
|---|
| 296 | #define RETSETNO RETURNX(SETs(&PL_sv_no)) |
|---|
| 297 | #define RETSETUNDEF RETURNX(SETs(&PL_sv_undef)) |
|---|
| 298 | |
|---|
| 299 | #define ARGTARG PL_op->op_targ |
|---|
| 300 | |
|---|
| 301 | /* See OPpTARGET_MY: */ |
|---|
| 302 | #define MAXARG (PL_op->op_private & 15) |
|---|
| 303 | |
|---|
| 304 | #define SWITCHSTACK(f,t) \ |
|---|
| 305 | STMT_START { \ |
|---|
| 306 | AvFILLp(f) = sp - PL_stack_base; \ |
|---|
| 307 | PL_stack_base = AvARRAY(t); \ |
|---|
| 308 | PL_stack_max = PL_stack_base + AvMAX(t); \ |
|---|
| 309 | sp = PL_stack_sp = PL_stack_base + AvFILLp(t); \ |
|---|
| 310 | PL_curstack = t; \ |
|---|
| 311 | } STMT_END |
|---|
| 312 | |
|---|
| 313 | #define EXTEND_MORTAL(n) \ |
|---|
| 314 | STMT_START { \ |
|---|
| 315 | if (PL_tmps_ix + (n) >= PL_tmps_max) \ |
|---|
| 316 | tmps_grow(n); \ |
|---|
| 317 | } STMT_END |
|---|
| 318 | |
|---|
| 319 | #define AMGf_noright 1 |
|---|
| 320 | #define AMGf_noleft 2 |
|---|
| 321 | #define AMGf_assign 4 |
|---|
| 322 | #define AMGf_unary 8 |
|---|
| 323 | |
|---|
| 324 | #define tryAMAGICbinW(meth,assign,set) STMT_START { \ |
|---|
| 325 | if (PL_amagic_generation) { \ |
|---|
| 326 | SV* tmpsv; \ |
|---|
| 327 | SV* right= *(sp); SV* left= *(sp-1);\ |
|---|
| 328 | if ((SvAMAGIC(left)||SvAMAGIC(right))&&\ |
|---|
| 329 | (tmpsv=amagic_call(left, \ |
|---|
| 330 | right, \ |
|---|
| 331 | CAT2(meth,_amg), \ |
|---|
| 332 | (assign)? AMGf_assign: 0))) {\ |
|---|
| 333 | SPAGAIN; \ |
|---|
| 334 | (void)POPs; set(tmpsv); RETURN; } \ |
|---|
| 335 | } \ |
|---|
| 336 | } STMT_END |
|---|
| 337 | |
|---|
| 338 | #define tryAMAGICbin(meth,assign) tryAMAGICbinW(meth,assign,SETsv) |
|---|
| 339 | #define tryAMAGICbinSET(meth,assign) tryAMAGICbinW(meth,assign,SETs) |
|---|
| 340 | |
|---|
| 341 | #define AMG_CALLun(sv,meth) amagic_call(sv,&PL_sv_undef, \ |
|---|
| 342 | CAT2(meth,_amg),AMGf_noright | AMGf_unary) |
|---|
| 343 | #define AMG_CALLbinL(left,right,meth) \ |
|---|
| 344 | amagic_call(left,right,CAT2(meth,_amg),AMGf_noright) |
|---|
| 345 | |
|---|
| 346 | #define tryAMAGICunW(meth,set,shift,ret) STMT_START { \ |
|---|
| 347 | if (PL_amagic_generation) { \ |
|---|
| 348 | SV* tmpsv; \ |
|---|
| 349 | SV* arg= sp[shift]; \ |
|---|
| 350 | if(0) goto am_again; /* shut up unused warning */ \ |
|---|
| 351 | am_again: \ |
|---|
| 352 | if ((SvAMAGIC(arg))&&\ |
|---|
| 353 | (tmpsv=AMG_CALLun(arg,meth))) {\ |
|---|
| 354 | SPAGAIN; if (shift) sp += shift; \ |
|---|
| 355 | set(tmpsv); ret; } \ |
|---|
| 356 | } \ |
|---|
| 357 | } STMT_END |
|---|
| 358 | |
|---|
| 359 | #define FORCE_SETs(sv) STMT_START { sv_setsv(TARG, (sv)); SETTARG; } STMT_END |
|---|
| 360 | |
|---|
| 361 | #define tryAMAGICun(meth) tryAMAGICunW(meth,SETsvUN,0,RETURN) |
|---|
| 362 | #define tryAMAGICunSET(meth) tryAMAGICunW(meth,SETs,0,RETURN) |
|---|
| 363 | #define tryAMAGICunTARGET(meth, shift) \ |
|---|
| 364 | { dSP; sp--; /* get TARGET from below PL_stack_sp */ \ |
|---|
| 365 | { dTARGETSTACKED; \ |
|---|
| 366 | { dSP; tryAMAGICunW(meth,FORCE_SETs,shift,RETURN);}}} |
|---|
| 367 | |
|---|
| 368 | #define setAGAIN(ref) sv = ref; \ |
|---|
| 369 | if (!SvROK(ref)) \ |
|---|
| 370 | Perl_croak(aTHX_ "Overloaded dereference did not return a reference"); \ |
|---|
| 371 | if (ref != arg && SvRV(ref) != SvRV(arg)) { \ |
|---|
| 372 | arg = ref; \ |
|---|
| 373 | goto am_again; \ |
|---|
| 374 | } |
|---|
| 375 | |
|---|
| 376 | #define tryAMAGICunDEREF(meth) tryAMAGICunW(meth,setAGAIN,0,(void)0) |
|---|
| 377 | |
|---|
| 378 | #define opASSIGN (PL_op->op_flags & OPf_STACKED) |
|---|
| 379 | #define SETsv(sv) STMT_START { \ |
|---|
| 380 | if (opASSIGN || (SvFLAGS(TARG) & SVs_PADMY)) \ |
|---|
| 381 | { sv_setsv(TARG, (sv)); SETTARG; } \ |
|---|
| 382 | else SETs(sv); } STMT_END |
|---|
| 383 | |
|---|
| 384 | #define SETsvUN(sv) STMT_START { \ |
|---|
| 385 | if (SvFLAGS(TARG) & SVs_PADMY) \ |
|---|
| 386 | { sv_setsv(TARG, (sv)); SETTARG; } \ |
|---|
| 387 | else SETs(sv); } STMT_END |
|---|
| 388 | |
|---|
| 389 | /* newSVsv does not behave as advertised, so we copy missing |
|---|
| 390 | * information by hand */ |
|---|
| 391 | |
|---|
| 392 | /* SV* ref causes confusion with the member variable |
|---|
| 393 | changed SV* ref to SV* tmpRef */ |
|---|
| 394 | #define RvDEEPCP(rv) STMT_START { SV* tmpRef=SvRV(rv); \ |
|---|
| 395 | if (SvREFCNT(tmpRef)>1) { \ |
|---|
| 396 | SvRV(rv)=AMG_CALLun(rv,copy); \ |
|---|
| 397 | SvREFCNT_dec(tmpRef); \ |
|---|
| 398 | } } STMT_END |
|---|
| 399 | |
|---|
| 400 | /* |
|---|
| 401 | =for apidoc mU||LVRET |
|---|
| 402 | True if this op will be the return value of an lvalue subroutine |
|---|
| 403 | |
|---|
| 404 | =cut */ |
|---|
| 405 | #define LVRET ((PL_op->op_private & OPpMAYBE_LVSUB) && is_lvalue_sub()) |
|---|
