X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/316ad4fe4f1e1e3b0bcefe5896050dafc25b7449..ea437474a2ef8d1c554444df9e9faca78e36bcd1:/mg.c diff --git a/mg.c b/mg.c index f50e4a0..904381a 100644 --- a/mg.c +++ b/mg.c @@ -1,6 +1,6 @@ /* mg.c * - * Copyright (c) 1991-1999, Larry Wall + * Copyright (c) 1991-2000, Larry Wall * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. @@ -48,7 +48,7 @@ S_save_magic(pTHX_ I32 mgs_ix, SV *sv) MGS* mgs; assert(SvMAGICAL(sv)); - SAVEDESTRUCTOR(restore_magic, (void*)mgs_ix); + SAVEDESTRUCTOR_X(restore_magic, (void*)mgs_ix); mgs = SSPTR(mgs_ix, MGS*); mgs->mgs_sv = sv; @@ -60,6 +60,14 @@ S_save_magic(pTHX_ I32 mgs_ix, SV *sv) SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; } +/* +=for apidoc mg_magical + +Turns on the magical status of an SV. See C. + +=cut +*/ + void Perl_mg_magical(pTHX_ SV *sv) { @@ -67,16 +75,24 @@ Perl_mg_magical(pTHX_ SV *sv) for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { MGVTBL* vtbl = mg->mg_virtual; if (vtbl) { - if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP)) + if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) SvGMAGICAL_on(sv); if (vtbl->svt_set) SvSMAGICAL_on(sv); - if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL)) + if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) SvRMAGICAL_on(sv); } } } +/* +=for apidoc mg_get + +Do magic after a value is retrieved from the SV. See C. + +=cut +*/ + int Perl_mg_get(pTHX_ SV *sv) { @@ -92,7 +108,7 @@ Perl_mg_get(pTHX_ SV *sv) mgp = &SvMAGIC(sv); while ((mg = *mgp) != 0) { MGVTBL* vtbl = mg->mg_virtual; - if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) { + if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); /* Ignore this magic if it's been deleted */ if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && @@ -112,6 +128,14 @@ Perl_mg_get(pTHX_ SV *sv) return 0; } +/* +=for apidoc mg_set + +Do magic after a value is assigned to the SV. See C. + +=cut +*/ + int Perl_mg_set(pTHX_ SV *sv) { @@ -130,7 +154,7 @@ Perl_mg_set(pTHX_ SV *sv) mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; } - if (vtbl && (vtbl->svt_set != NULL)) + if (vtbl && vtbl->svt_set) CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); } @@ -138,6 +162,14 @@ Perl_mg_set(pTHX_ SV *sv) return 0; } +/* +=for apidoc mg_length + +Report on the SV's length. See C. + +=cut +*/ + U32 Perl_mg_length(pTHX_ SV *sv) { @@ -147,7 +179,7 @@ Perl_mg_length(pTHX_ SV *sv) for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { MGVTBL* vtbl = mg->mg_virtual; - if (vtbl && (vtbl->svt_len != NULL)) { + if (vtbl && vtbl->svt_len) { I32 mgs_ix; mgs_ix = SSNEW(sizeof(MGS)); @@ -171,7 +203,7 @@ Perl_mg_size(pTHX_ SV *sv) for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { MGVTBL* vtbl = mg->mg_virtual; - if (vtbl && (vtbl->svt_len != NULL)) { + if (vtbl && vtbl->svt_len) { I32 mgs_ix; mgs_ix = SSNEW(sizeof(MGS)); @@ -196,6 +228,14 @@ Perl_mg_size(pTHX_ SV *sv) return 0; } +/* +=for apidoc mg_clear + +Clear something magical that the SV represents. See C. + +=cut +*/ + int Perl_mg_clear(pTHX_ SV *sv) { @@ -209,7 +249,7 @@ Perl_mg_clear(pTHX_ SV *sv) MGVTBL* vtbl = mg->mg_virtual; /* omit GSKIP -- never set here */ - if (vtbl && (vtbl->svt_clear != NULL)) + if (vtbl && vtbl->svt_clear) CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); } @@ -217,6 +257,14 @@ Perl_mg_clear(pTHX_ SV *sv) return 0; } +/* +=for apidoc mg_find + +Finds the magic pointer for type matching the SV. See C. + +=cut +*/ + MAGIC* Perl_mg_find(pTHX_ SV *sv, int type) { @@ -228,6 +276,14 @@ Perl_mg_find(pTHX_ SV *sv, int type) return 0; } +/* +=for apidoc mg_copy + +Copies the magic from one SV to another. See C. + +=cut +*/ + int Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) { @@ -244,6 +300,14 @@ Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) return count; } +/* +=for apidoc mg_free + +Free any magic storage used by the SV. See C. + +=cut +*/ + int Perl_mg_free(pTHX_ SV *sv) { @@ -252,7 +316,7 @@ Perl_mg_free(pTHX_ SV *sv) for (mg = SvMAGIC(sv); mg; mg = moremagic) { MGVTBL* vtbl = mg->mg_virtual; moremagic = mg->mg_moremagic; - if (vtbl && (vtbl->svt_free != NULL)) + if (vtbl && vtbl->svt_free) CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); if (mg->mg_ptr && mg->mg_type != 'g') if (mg->mg_len >= 0) @@ -406,8 +470,19 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) case '\004': /* ^D */ sv_setiv(sv, (IV)(PL_debug & 32767)); +#if defined(YYDEBUG) && defined(DEBUGGING) + PL_yydebug = (PL_debug & 1); +#endif break; case '\005': /* ^E */ +#ifdef MACOS_TRADITIONAL + { + char msg[256]; + + sv_setnv(sv,(double)gLastMacOSErr); + sv_setpv(sv, gLastMacOSErr ? GetSysErrText(gLastMacOSErr, msg) : ""); + } +#else #ifdef VMS { # include @@ -453,6 +528,7 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) #endif #endif #endif +#endif SvNOK_on(sv); /* what a wonderful hack! */ break; case '\006': /* ^F */ @@ -491,10 +567,10 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) sv_setiv(sv, (IV)PL_basetime); #endif break; - case '\027': /* ^W & $^Warnings*/ + case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */ if (*(mg->mg_ptr+1) == '\0') sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); - else if (strEQ(mg->mg_ptr, "\027arnings")) { + else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) { if (PL_compiling.cop_warnings == WARN_NONE || PL_compiling.cop_warnings == WARN_STD) { @@ -507,6 +583,8 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) sv_setsv(sv, PL_compiling.cop_warnings); } } + else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS")) + sv_setiv(sv, (IV)PL_widesyscalls); break; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': case '&': @@ -533,6 +611,10 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) PL_tainted = FALSE; } sv_setpvn(sv, s, i); + if ((PL_curpm->op_pmdynflags & PMdf_UTF8) && !IN_BYTE) + SvUTF8_on(sv); + else + SvUTF8_off(sv); if (PL_tainting) PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx)); break; @@ -638,7 +720,8 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) int saveerrno = errno; sv_setnv(sv, (NV)errno); #ifdef OS2 - if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc)); + if (errno == errno_isOS2 || errno == errno_isOS2_set) + sv_setpv(sv, os2error(Perl_rc)); else #endif sv_setpv(sv, errno ? Strerror(errno) : ""); @@ -655,26 +738,32 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) break; case '(': sv_setiv(sv, (IV)PL_gid); - Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_gid); +#ifdef HAS_GETGROUPS + Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid); +#endif goto add_groups; case ')': sv_setiv(sv, (IV)PL_egid); - Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_egid); +#ifdef HAS_GETGROUPS + Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid); +#endif add_groups: #ifdef HAS_GETGROUPS { Groups_t gary[NGROUPS]; i = getgroups(NGROUPS,gary); while (--i >= 0) - Perl_sv_catpvf(aTHX_ sv, " %Vd", (IV)gary[i]); + Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]); } #endif SvIOK_on(sv); /* what a wonderful hack! */ break; case '*': break; +#ifndef MACOS_TRADITIONAL case '0': break; +#endif #ifdef USE_THREADS case '@': sv_setsv(sv, thr->errsv); @@ -806,7 +895,10 @@ Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) #if defined(VMS) Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); #else -# ifdef WIN32 +# ifdef PERL_IMPLICIT_SYS + PerlEnv_clearenv(); +# else +# ifdef WIN32 char *envv = GetEnvironmentStrings(); char *cur = envv; STRLEN len; @@ -822,13 +914,13 @@ Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) cur += len+1; } FreeEnvironmentStrings(envv); -# else -# ifdef CYGWIN +# else +# ifdef __CYGWIN__ I32 i; for (i = 0; environ[i]; i++) - Safefree(environ[i]); -# else -# ifndef PERL_USE_SAFE_PUTENV + safesysfree(environ[i]); +# else +# ifndef PERL_USE_SAFE_PUTENV I32 i; if (environ == PL_origenviron) @@ -836,12 +928,13 @@ Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) else for (i = 0; environ[i]; i++) safesysfree(environ[i]); -# endif /* PERL_USE_SAFE_PUTENV */ -# endif /* CYGWIN */ +# endif /* PERL_USE_SAFE_PUTENV */ +# endif /* __CYGWIN__ */ environ[0] = Nullch; -# endif /* WIN32 */ +# endif /* WIN32 */ +# endif /* PERL_IMPLICIT_SYS */ #endif /* VMS */ return 0; } @@ -905,8 +998,6 @@ Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) svp = &PL_diehook; else if (strEQ(s,"__WARN__")) svp = &PL_warnhook; - else if (strEQ(s,"__PARSE__")) - svp = &PL_parsehook; else Perl_croak(aTHX_ "No such hook: %s", s); i = 0; @@ -918,7 +1009,7 @@ Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) else { i = whichsig(s); /* ...no, a brick */ if (!i) { - if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM")) + if (ckWARN(WARN_SIGNAL)) Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s); return 0; } @@ -1127,7 +1218,7 @@ int Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) { dSP; - char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; + const char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; ENTER; SAVETMPS; @@ -1168,7 +1259,7 @@ Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) i = SvTRUE(sv); svp = av_fetch(GvAV(gv), atoi(MgPV(mg,n_a)), FALSE); - if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) + if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp)))) o->op_private = i; else if (ckWARN_d(WARN_INTERNAL)) Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n"); @@ -1201,7 +1292,7 @@ Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) if (mg && mg->mg_len >= 0) { dTHR; I32 i = mg->mg_len; - if (IN_UTF8) + if (DO_UTF8(lsv)) sv_pos_b2u(lsv, &i); sv_setiv(sv, i + PL_curcop->cop_arybase); return 0; @@ -1217,7 +1308,7 @@ Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) SV* lsv = LvTARG(sv); SSize_t pos; STRLEN len; - STRLEN ulen; + STRLEN ulen = 0; dTHR; mg = 0; @@ -1238,12 +1329,10 @@ Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) pos = SvIV(sv) - PL_curcop->cop_arybase; - if (IN_UTF8) { + if (DO_UTF8(lsv)) { ulen = sv_len_utf8(lsv); if (ulen) len = ulen; - else - ulen = 0; } if (pos < 0) { @@ -1569,15 +1658,19 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) DEBUG_x(dump_all()); break; case '\005': /* ^E */ -#ifdef VMS - set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); +#ifdef MACOS_TRADITIONAL + gLastMacOSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); #else -# ifdef WIN32 - SetLastError( SvIV(sv) ); +# ifdef VMS + set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); # else -# ifndef OS2 +# ifdef WIN32 + SetLastError( SvIV(sv) ); +# else +# ifndef OS2 /* will anyone ever use this? */ SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); +# endif # endif # endif #endif @@ -1616,7 +1709,7 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); #endif break; - case '\027': /* ^W & $^Warnings */ + case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */ if (*(mg->mg_ptr+1) == '\0') { if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); @@ -1624,8 +1717,13 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) | (i ? G_WARN_ON : G_WARN_OFF) ; } } - else if (strEQ(mg->mg_ptr, "\027arnings")) { + else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) { if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { + if (!SvPOK(sv) && PL_localizing) { + sv_setpvn(sv, WARN_NONEstring, WARNsize); + PL_compiling.cop_warnings = WARN_NONE; + break; + } if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) { PL_compiling.cop_warnings = WARN_ALL; PL_dowarn |= G_WARN_ONCE ; @@ -1641,12 +1739,14 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) PL_dowarn |= G_WARN_ONCE ; } } - } + } + else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS")) + PL_widesyscalls = SvTRUE(sv); break; case '.': if (PL_localizing) { if (PL_localizing == 1) - save_sptr((SV**)&PL_last_in_gv); + SAVESPTR(PL_last_in_gv); } else if (SvOK(sv) && GvIO(PL_last_in_gv)) IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv); @@ -1700,8 +1800,10 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) case '\\': if (PL_ors) Safefree(PL_ors); - if (SvOK(sv) || SvGMAGICAL(sv)) - PL_ors = savepv(SvPV(sv,PL_orslen)); + if (SvOK(sv) || SvGMAGICAL(sv)) { + s = SvPV(sv,PL_orslen); + PL_ors = savepvn(s,PL_orslen); + } else { PL_ors = Nullch; PL_orslen = 0; @@ -1872,6 +1974,7 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) case ':': PL_chopset = SvPV_force(sv,len); break; +#ifndef MACOS_TRADITIONAL case '0': if (!PL_origalen) { s = PL_origargv[0]; @@ -1929,6 +2032,7 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) PL_origargv[i] = Nullch; } break; +#endif #ifdef USE_THREADS case '@': sv_setsv(thr->errsv, sv); @@ -1943,8 +2047,9 @@ int Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg) { dTHR; - DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n", - (unsigned long)thr, (unsigned long)sv);) + DEBUG_S(PerlIO_printf(Perl_debug_log, + "0x%"UVxf": magic_mutexfree 0x%"UVxf"\n", + PTR2UV(thr), PTR2UV(sv));) if (MgOWNER(mg)) Perl_croak(aTHX_ "panic: magic_mutexfree"); MUTEX_DESTROY(MgMUTEXP(mg)); @@ -2006,7 +2111,7 @@ Perl_sighandler(int sig) if (flags & 1) { PL_savestack_ix += 5; /* Protect save in progress. */ o_save_i = PL_savestack_ix; - SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags); + SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags); } if (flags & 4) PL_markstack_ptr++; /* Protect mark. */ @@ -2068,7 +2173,6 @@ cleanup: #ifdef PERL_OBJECT -#define NO_XSLOCKS #include "XSUB.h" #endif @@ -2076,7 +2180,7 @@ static void restore_magic(pTHXo_ void *p) { dTHR; - MGS* mgs = SSPTR((I32)p, MGS*); + MGS* mgs = SSPTR(PTR2IV(p), MGS*); SV* sv = mgs->mgs_sv; if (!sv) @@ -2104,7 +2208,7 @@ restore_magic(pTHXo_ void *p) if (PL_savestack_ix == mgs->mgs_ss_ix) { I32 popval = SSPOPINT; - assert(popval == SAVEt_DESTRUCTOR); + assert(popval == SAVEt_DESTRUCTOR_X); PL_savestack_ix -= 2; popval = SSPOPINT; assert(popval == SAVEt_ALLOC);