| 1 |
root |
1.1 |
/* multicall.h (version 1.0) |
| 2 |
|
|
* |
| 3 |
|
|
* Implements a poor-man's MULTICALL interface for old versions |
| 4 |
|
|
* of perl that don't offer a proper one. Intended to be compatible |
| 5 |
|
|
* with 5.6.0 and later. |
| 6 |
|
|
* |
| 7 |
|
|
*/ |
| 8 |
|
|
|
| 9 |
|
|
#ifdef dMULTICALL |
| 10 |
|
|
#define REAL_MULTICALL |
| 11 |
|
|
#else |
| 12 |
|
|
#undef REAL_MULTICALL |
| 13 |
|
|
|
| 14 |
|
|
/* In versions of perl where MULTICALL is not defined (i.e. prior |
| 15 |
|
|
* to 5.9.4), Perl_pad_push is not exported either. It also has |
| 16 |
|
|
* an extra argument in older versions; certainly in the 5.8 series. |
| 17 |
|
|
* So we redefine it here. |
| 18 |
|
|
*/ |
| 19 |
|
|
|
| 20 |
|
|
#ifndef AVf_REIFY |
| 21 |
|
|
# ifdef SVpav_REIFY |
| 22 |
|
|
# define AVf_REIFY SVpav_REIFY |
| 23 |
|
|
# else |
| 24 |
|
|
# error Neither AVf_REIFY nor SVpav_REIFY is defined |
| 25 |
|
|
# endif |
| 26 |
|
|
#endif |
| 27 |
|
|
|
| 28 |
|
|
#ifndef AvFLAGS |
| 29 |
|
|
# define AvFLAGS SvFLAGS |
| 30 |
|
|
#endif |
| 31 |
|
|
|
| 32 |
|
|
static void |
| 33 |
|
|
multicall_pad_push(pTHX_ AV *padlist, int depth) |
| 34 |
|
|
{ |
| 35 |
|
|
if (depth <= AvFILLp(padlist)) |
| 36 |
|
|
return; |
| 37 |
|
|
|
| 38 |
|
|
{ |
| 39 |
|
|
SV** const svp = AvARRAY(padlist); |
| 40 |
|
|
AV* const newpad = newAV(); |
| 41 |
|
|
SV** const oldpad = AvARRAY(svp[depth-1]); |
| 42 |
|
|
I32 ix = AvFILLp((AV*)svp[1]); |
| 43 |
|
|
const I32 names_fill = AvFILLp((AV*)svp[0]); |
| 44 |
|
|
SV** const names = AvARRAY(svp[0]); |
| 45 |
|
|
AV *av; |
| 46 |
|
|
|
| 47 |
|
|
for ( ;ix > 0; ix--) { |
| 48 |
|
|
if (names_fill >= ix && names[ix] != &PL_sv_undef) { |
| 49 |
|
|
const char sigil = SvPVX(names[ix])[0]; |
| 50 |
|
|
if ((SvFLAGS(names[ix]) & SVf_FAKE) || sigil == '&') { |
| 51 |
|
|
/* outer lexical or anon code */ |
| 52 |
|
|
av_store(newpad, ix, SvREFCNT_inc(oldpad[ix])); |
| 53 |
|
|
} |
| 54 |
|
|
else { /* our own lexical */ |
| 55 |
|
|
SV *sv; |
| 56 |
|
|
if (sigil == '@') |
| 57 |
|
|
sv = (SV*)newAV(); |
| 58 |
|
|
else if (sigil == '%') |
| 59 |
|
|
sv = (SV*)newHV(); |
| 60 |
|
|
else |
| 61 |
|
|
sv = NEWSV(0, 0); |
| 62 |
|
|
av_store(newpad, ix, sv); |
| 63 |
|
|
SvPADMY_on(sv); |
| 64 |
|
|
} |
| 65 |
|
|
} |
| 66 |
|
|
else if (IS_PADGV(oldpad[ix]) || IS_PADCONST(oldpad[ix])) { |
| 67 |
|
|
av_store(newpad, ix, SvREFCNT_inc(oldpad[ix])); |
| 68 |
|
|
} |
| 69 |
|
|
else { |
| 70 |
|
|
/* save temporaries on recursion? */ |
| 71 |
|
|
SV * const sv = NEWSV(0, 0); |
| 72 |
|
|
av_store(newpad, ix, sv); |
| 73 |
|
|
SvPADTMP_on(sv); |
| 74 |
|
|
} |
| 75 |
|
|
} |
| 76 |
|
|
av = newAV(); |
| 77 |
|
|
av_extend(av, 0); |
| 78 |
|
|
av_store(newpad, 0, (SV*)av); |
| 79 |
|
|
AvFLAGS(av) = AVf_REIFY; |
| 80 |
|
|
|
| 81 |
|
|
av_store(padlist, depth, (SV*)newpad); |
| 82 |
|
|
AvFILLp(padlist) = depth; |
| 83 |
|
|
} |
| 84 |
|
|
} |
| 85 |
|
|
|
| 86 |
|
|
#define dMULTICALL \ |
| 87 |
|
|
SV **newsp; /* set by POPBLOCK */ \ |
| 88 |
|
|
PERL_CONTEXT *cx; \ |
| 89 |
|
|
CV *multicall_cv; \ |
| 90 |
|
|
OP *multicall_cop; \ |
| 91 |
|
|
bool multicall_oldcatch; \ |
| 92 |
|
|
U8 hasargs = 0 |
| 93 |
|
|
|
| 94 |
|
|
/* Between 5.9.1 and 5.9.2 the retstack was removed, and the |
| 95 |
|
|
return op is now stored on the cxstack. */ |
| 96 |
|
|
#define HAS_RETSTACK (\ |
| 97 |
|
|
PERL_REVISION < 5 || \ |
| 98 |
|
|
(PERL_REVISION == 5 && PERL_VERSION < 9) || \ |
| 99 |
|
|
(PERL_REVISION == 5 && PERL_VERSION == 9 && PERL_SUBVERSION < 2) \ |
| 100 |
|
|
) |
| 101 |
|
|
|
| 102 |
|
|
|
| 103 |
|
|
/* PUSHSUB is defined so differently on different versions of perl |
| 104 |
|
|
* that it's easier to define our own version than code for all the |
| 105 |
|
|
* different possibilities. |
| 106 |
|
|
*/ |
| 107 |
|
|
#if HAS_RETSTACK |
| 108 |
|
|
# define PUSHSUB_RETSTACK(cx) |
| 109 |
|
|
#else |
| 110 |
|
|
# define PUSHSUB_RETSTACK(cx) cx->blk_sub.retop = Nullop; |
| 111 |
|
|
#endif |
| 112 |
|
|
#define MULTICALL_PUSHSUB(cx, the_cv) \ |
| 113 |
|
|
cx->blk_sub.cv = the_cv; \ |
| 114 |
|
|
cx->blk_sub.olddepth = CvDEPTH(the_cv); \ |
| 115 |
|
|
cx->blk_sub.hasargs = hasargs; \ |
| 116 |
|
|
cx->blk_sub.lval = PL_op->op_private & \ |
| 117 |
|
|
(OPpLVAL_INTRO|OPpENTERSUB_INARGS); \ |
| 118 |
|
|
PUSHSUB_RETSTACK(cx) \ |
| 119 |
|
|
if (!CvDEPTH(the_cv)) { \ |
| 120 |
|
|
(void)SvREFCNT_inc(the_cv); \ |
| 121 |
|
|
(void)SvREFCNT_inc(the_cv); \ |
| 122 |
|
|
SAVEFREESV(the_cv); \ |
| 123 |
|
|
} |
| 124 |
|
|
|
| 125 |
|
|
#define PUSH_MULTICALL(the_cv) \ |
| 126 |
|
|
STMT_START { \ |
| 127 |
|
|
CV *_nOnclAshIngNamE_ = the_cv; \ |
| 128 |
|
|
AV* padlist = CvPADLIST(_nOnclAshIngNamE_); \ |
| 129 |
|
|
multicall_cv = _nOnclAshIngNamE_; \ |
| 130 |
|
|
ENTER; \ |
| 131 |
|
|
multicall_oldcatch = CATCH_GET; \ |
| 132 |
|
|
SAVESPTR(CvROOT(multicall_cv)->op_ppaddr); \ |
| 133 |
|
|
CvROOT(multicall_cv)->op_ppaddr = PL_ppaddr[OP_NULL]; \ |
| 134 |
|
|
SAVETMPS; SAVEVPTR(PL_op); \ |
| 135 |
|
|
CATCH_SET(TRUE); \ |
| 136 |
|
|
PUSHSTACKi(PERLSI_SORT); \ |
| 137 |
|
|
PUSHBLOCK(cx, CXt_SUB, PL_stack_sp); \ |
| 138 |
|
|
MULTICALL_PUSHSUB(cx, multicall_cv); \ |
| 139 |
|
|
if (++CvDEPTH(multicall_cv) >= 2) { \ |
| 140 |
|
|
PERL_STACK_OVERFLOW_CHECK(); \ |
| 141 |
|
|
multicall_pad_push(aTHX_ padlist, CvDEPTH(multicall_cv)); \ |
| 142 |
|
|
} \ |
| 143 |
|
|
SAVECOMPPAD(); \ |
| 144 |
|
|
PL_comppad = (AV*) (AvARRAY(padlist)[CvDEPTH(multicall_cv)]); \ |
| 145 |
|
|
PL_curpad = AvARRAY(PL_comppad); \ |
| 146 |
|
|
multicall_cop = CvSTART(multicall_cv); \ |
| 147 |
|
|
} STMT_END |
| 148 |
|
|
|
| 149 |
|
|
#define MULTICALL \ |
| 150 |
|
|
STMT_START { \ |
| 151 |
|
|
PL_op = multicall_cop; \ |
| 152 |
|
|
CALLRUNOPS(aTHX); \ |
| 153 |
|
|
} STMT_END |
| 154 |
|
|
|
| 155 |
|
|
#define POP_MULTICALL \ |
| 156 |
|
|
STMT_START { \ |
| 157 |
|
|
CvDEPTH(multicall_cv)--; \ |
| 158 |
|
|
LEAVESUB(multicall_cv); \ |
| 159 |
|
|
POPBLOCK(cx,PL_curpm); \ |
| 160 |
|
|
POPSTACK; \ |
| 161 |
|
|
CATCH_SET(multicall_oldcatch); \ |
| 162 |
|
|
LEAVE; \ |
| 163 |
|
|
SPAGAIN; \ |
| 164 |
|
|
} STMT_END |
| 165 |
|
|
|
| 166 |
|
|
#endif |
