X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/29a861e74521a5f903bccb023c86950d733fa0b7..654dfe5293a435f777e47f6587931541a3006cbd:/av.c diff --git a/av.c b/av.c index c6677a9..aada6c6 100644 --- a/av.c +++ b/av.c @@ -1,7 +1,7 @@ /* av.c * - * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others + * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, + * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. @@ -9,8 +9,10 @@ */ /* - * "...for the Entwives desired order, and plenty, and peace (by which they - * meant that things should remain where they had set them)." --Treebeard + * '...for the Entwives desired order, and plenty, and peace (by which they + * meant that things should remain where they had set them).' --Treebeard + * + * [p.476 of _The Lord of the Rings_, III/iv: "Treebeard"] */ /* @@ -27,13 +29,14 @@ Perl_av_reify(pTHX_ AV *av) dVAR; I32 key; - assert(av); + PERL_ARGS_ASSERT_AV_REIFY; + assert(SvTYPE(av) == SVt_PVAV); if (AvREAL(av)) return; #ifdef DEBUGGING - if (SvTIED_mg((SV*)av, PERL_MAGIC_tied) && ckWARN_d(WARN_DEBUGGING)) - Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), "av_reify called on tied array"); + if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied)) + Perl_ck_warner_d(aTHX_ packWARN(WARN_DEBUGGING), "av_reify called on tied array"); #endif key = AvMAX(av) + 1; while (key > AvFILLp(av) + 1) @@ -66,23 +69,15 @@ Perl_av_extend(pTHX_ AV *av, I32 key) dVAR; MAGIC *mg; - assert(av); + PERL_ARGS_ASSERT_AV_EXTEND; + assert(SvTYPE(av) == SVt_PVAV); - mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied); + mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied); if (mg) { - dSP; - ENTER; - SAVETMPS; - PUSHSTACKi(PERLSI_MAGIC); - PUSHMARK(SP); - EXTEND(SP,2); - PUSHs(SvTIED_obj((SV*)av, mg)); - PUSHs(sv_2mortal(newSViv(key+1))); - PUTBACK; - call_method("EXTEND", G_SCALAR|G_DISCARD); - POPSTACK; - FREETMPS; - LEAVE; + SV *arg1 = sv_newmortal(); + sv_setiv(arg1, (IV)(key + 1)); + Perl_magic_methcall(aTHX_ MUTABLE_SV(av), mg, "EXTEND", G_DISCARD, 1, + arg1); return; } if (key > AvMAX(av)) { @@ -117,8 +112,22 @@ Perl_av_extend(pTHX_ AV *av, I32 key) IV itmp; #endif -#ifdef MYMALLOC - newmax = malloced_size((void*)AvALLOC(av))/sizeof(SV*) - 1; +#ifdef Perl_safesysmalloc_size + /* Whilst it would be quite possible to move this logic around + (as I did in the SV code), so as to set AvMAX(av) early, + based on calling Perl_safesysmalloc_size() immediately after + allocation, I'm not convinced that it is a great idea here. + In an array we have to loop round setting everything to + &PL_sv_undef, which means writing to memory, potentially lots + of it, whereas for the SV buffer case we don't touch the + "bonus" memory. So there there is no cost in telling the + world about it, whereas here we have to do work before we can + tell the world about it, and that work involves writing to + memory that might never be read. So, I feel, better to keep + the current lazy system of only writing to it if our caller + has a need for more space. NWC */ + newmax = Perl_safesysmalloc_size((void*)AvALLOC(av)) / + sizeof(const SV *) - 1; if (key <= newmax) goto resized; @@ -129,25 +138,22 @@ Perl_av_extend(pTHX_ AV *av, I32 key) #if defined(STRANGE_MALLOC) || defined(MYMALLOC) Renew(AvALLOC(av),newmax+1, SV*); #else - bytes = (newmax + 1) * sizeof(SV*); + bytes = (newmax + 1) * sizeof(const SV *); #define MALLOC_OVERHEAD 16 itmp = MALLOC_OVERHEAD; while ((MEM_SIZE)(itmp - MALLOC_OVERHEAD) < bytes) itmp += itmp; itmp -= MALLOC_OVERHEAD; - itmp /= sizeof(SV*); + itmp /= sizeof(const SV *); assert(itmp > newmax); newmax = itmp - 1; assert(newmax >= AvMAX(av)); Newx(ary, newmax+1, SV*); Copy(AvALLOC(av), ary, AvMAX(av)+1, SV*); - if (AvMAX(av) > 64) - offer_nice_chunk(AvALLOC(av), (AvMAX(av)+1) * sizeof(SV*)); - else - Safefree(AvALLOC(av)); + Safefree(AvALLOC(av)); AvALLOC(av) = ary; #endif -#ifdef MYMALLOC +#ifdef Perl_safesysmalloc_size resized: #endif ary = AvALLOC(av) + AvMAX(av) + 1; @@ -181,12 +187,15 @@ Perl_av_extend(pTHX_ AV *av, I32 key) =for apidoc av_fetch Returns the SV at the specified index in the array. The C is the -index. If C is set then the fetch will be part of a store. Check -that the return value is non-null before dereferencing it to a C. +index. If lval is true, you are guaranteed to get a real SV back (in case +it wasn't real before), which you can then modify. Check that the return +value is non-null before dereferencing it to a C. See L for more information on how to use this function on tied arrays. +The rough perl equivalent is C<$myarray[$idx]>. + =cut */ @@ -195,18 +204,21 @@ Perl_av_fetch(pTHX_ register AV *av, I32 key, I32 lval) { dVAR; - assert(av); + PERL_ARGS_ASSERT_AV_FETCH; + assert(SvTYPE(av) == SVt_PVAV); if (SvRMAGICAL(av)) { - const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied); - if (tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata)) { + const MAGIC * const tied_magic + = mg_find((const SV *)av, PERL_MAGIC_tied); + if (tied_magic || mg_find((const SV *)av, PERL_MAGIC_regdata)) { SV *sv; if (key < 0) { I32 adjust_index = 1; if (tied_magic) { /* Handle negative array indices 20020222 MJD */ SV * const * const negative_indices_glob = - hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av, tied_magic))), + hv_fetch(SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(av), + tied_magic))), NEGATIVE_INDICES_VAR, 16, 0); if (negative_indices_glob && SvTRUE(GvSV(*negative_indices_glob))) @@ -222,7 +234,9 @@ Perl_av_fetch(pTHX_ register AV *av, I32 key, I32 lval) sv = sv_newmortal(); sv_upgrade(sv, SVt_PVLV); - mg_copy((SV*)av, sv, 0, key); + mg_copy(MUTABLE_SV(av), sv, 0, key); + if (!tied_magic) /* for regdata, force leavesub to make copies */ + SvTEMP_off(sv); LvTYPE(sv) = 't'; LvTARG(sv) = sv; /* fake (SV**) */ return &(LvTARG(sv)); @@ -235,18 +249,12 @@ Perl_av_fetch(pTHX_ register AV *av, I32 key, I32 lval) return NULL; } - if (key > AvFILLp(av)) { - if (!lval) - return NULL; - return av_store(av,key,newSV(0)); - } - if (AvARRAY(av)[key] == &PL_sv_undef) { - emptyness: - if (lval) - return av_store(av,key,newSV(0)); - return NULL; + if (key > AvFILLp(av) || AvARRAY(av)[key] == &PL_sv_undef) { + emptyness: + return lval ? av_store(av,key,newSV(0)) : NULL; } - else if (AvREIFY(av) + + if (AvREIFY(av) && (!AvARRAY(av)[key] /* eg. @_ could have freed elts */ || SvIS_FREED(AvARRAY(av)[key]))) { AvARRAY(av)[key] = &PL_sv_undef; /* 1/2 reify */ @@ -261,11 +269,16 @@ Perl_av_fetch(pTHX_ register AV *av, I32 key, I32 lval) Stores an SV in an array. The array index is specified as C. The return value will be NULL if the operation failed or if the value did not need to be actually stored within the array (as in the case of tied -arrays). Otherwise it can be dereferenced to get the original C. Note -that the caller is responsible for suitably incrementing the reference +arrays). Otherwise, it can be dereferenced +to get the C that was stored +there (= C)). + +Note that the caller is responsible for suitably incrementing the reference count of C before the call, and decrementing it if the function returned NULL. +Approximate Perl equivalent: C<$myarray[$key] = $val;>. + See L for more information on how to use this function on tied arrays. @@ -278,7 +291,8 @@ Perl_av_store(pTHX_ register AV *av, I32 key, SV *val) dVAR; SV** ary; - assert(av); + PERL_ARGS_ASSERT_AV_STORE; + assert(SvTYPE(av) == SVt_PVAV); /* S_regclass relies on being able to pass in a NULL sv (unicode_alternate may be NULL). @@ -288,13 +302,13 @@ Perl_av_store(pTHX_ register AV *av, I32 key, SV *val) val = &PL_sv_undef; if (SvRMAGICAL(av)) { - const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied); + const MAGIC * const tied_magic = mg_find((const SV *)av, PERL_MAGIC_tied); if (tied_magic) { /* Handle negative array indices 20020222 MJD */ if (key < 0) { bool adjust_index = 1; SV * const * const negative_indices_glob = - hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av, + hv_fetch(SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(av), tied_magic))), NEGATIVE_INDICES_VAR, 16, 0); if (negative_indices_glob @@ -307,7 +321,7 @@ Perl_av_store(pTHX_ register AV *av, I32 key, SV *val) } } if (val != &PL_sv_undef) { - mg_copy((SV*)av, val, 0, key); + mg_copy(MUTABLE_SV(av), val, 0, key); } return NULL; } @@ -321,7 +335,7 @@ Perl_av_store(pTHX_ register AV *av, I32 key, SV *val) } if (SvREADONLY(av) && key >= AvFILL(av)) - Perl_croak(aTHX_ PL_no_modify); + Perl_croak_no_modify(aTHX); if (!AvREAL(av) && AvREIFY(av)) av_reify(av); @@ -342,53 +356,44 @@ Perl_av_store(pTHX_ register AV *av, I32 key, SV *val) SvREFCNT_dec(ary[key]); ary[key] = val; if (SvSMAGICAL(av)) { - if (val != &PL_sv_undef) { - const MAGIC* const mg = SvMAGIC(av); - sv_magic(val, (SV*)av, toLOWER(mg->mg_type), 0, key); + const MAGIC *mg = SvMAGIC(av); + bool set = TRUE; + for (; mg; mg = mg->mg_moremagic) { + if (!isUPPER(mg->mg_type)) continue; + if (val != &PL_sv_undef) { + sv_magic(val, MUTABLE_SV(av), toLOWER(mg->mg_type), 0, key); + } + if (PL_delaymagic && mg->mg_type == PERL_MAGIC_isa) { + PL_delaymagic |= DM_ARRAY_ISA; + set = FALSE; + } } - mg_set((SV*)av); + if (set) + mg_set(MUTABLE_SV(av)); } return &ary[key]; } /* -=for apidoc newAV - -Creates a new AV. The reference count is set to 1. - -=cut -*/ - -AV * -Perl_newAV(pTHX) -{ - register AV * const av = (AV*)newSV(0); - - sv_upgrade((SV *)av, SVt_PVAV); - /* sv_upgrade does AvREAL_only() */ - AvALLOC(av) = 0; - AvARRAY(av) = NULL; - AvMAX(av) = AvFILLp(av) = -1; - return av; -} - -/* =for apidoc av_make Creates a new AV and populates it with a list of SVs. The SVs are copied into the array, so they may be freed after the call to av_make. The new AV will have a reference count of 1. +Perl equivalent: C + =cut */ AV * Perl_av_make(pTHX_ register I32 size, register SV **strp) { - register AV * const av = (AV*)newSV(0); - - sv_upgrade((SV *) av,SVt_PVAV); + register AV * const av = MUTABLE_AV(newSV_type(SVt_PVAV)); /* sv_upgrade does AvREAL_only() */ + PERL_ARGS_ASSERT_AV_MAKE; + assert(SvTYPE(av) == SVt_PVAV); + if (size) { /* "defined" was returning undef for size==0 anyway. */ register SV** ary; register I32 i; @@ -398,8 +403,14 @@ Perl_av_make(pTHX_ register I32 size, register SV **strp) AvFILLp(av) = AvMAX(av) = size - 1; for (i = 0; i < size; i++) { assert (*strp); + + /* Don't let sv_setsv swipe, since our source array might + have multiple references to the same temp scalar (e.g. + from a list slice) */ + ary[i] = newSV(0); - sv_setsv(ary[i], *strp); + sv_setsv_flags(ary[i], *strp, + SV_GMAGIC|SV_DO_COW_SVSETSV|SV_NOSTEAL); strp++; } } @@ -409,8 +420,11 @@ Perl_av_make(pTHX_ register I32 size, register SV **strp) /* =for apidoc av_clear -Clears an array, making it empty. Does not free the memory used by the -array itself. +Clears an array, making it empty. Does not free the memory the av uses to +store its list of scalars. If any destructors are triggered as a result, +the av itself may be freed when this function returns. + +Perl equivalent: C<@myarray = ();>. =cut */ @@ -420,27 +434,37 @@ Perl_av_clear(pTHX_ register AV *av) { dVAR; I32 extra; + bool real; + + PERL_ARGS_ASSERT_AV_CLEAR; + assert(SvTYPE(av) == SVt_PVAV); - assert(av); #ifdef DEBUGGING - if (SvREFCNT(av) == 0 && ckWARN_d(WARN_DEBUGGING)) { - Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), "Attempt to clear deleted array"); + if (SvREFCNT(av) == 0) { + Perl_ck_warner_d(aTHX_ packWARN(WARN_DEBUGGING), "Attempt to clear deleted array"); } #endif if (SvREADONLY(av)) - Perl_croak(aTHX_ PL_no_modify); + Perl_croak_no_modify(aTHX); /* Give any tie a chance to cleanup first */ - if (SvRMAGICAL(av)) - mg_clear((SV*)av); + if (SvRMAGICAL(av)) { + const MAGIC* const mg = SvMAGIC(av); + if (PL_delaymagic && mg && mg->mg_type == PERL_MAGIC_isa) + PL_delaymagic |= DM_ARRAY_ISA; + else + mg_clear(MUTABLE_SV(av)); + } if (AvMAX(av) < 0) return; - if (AvREAL(av)) { + if ((real = !!AvREAL(av))) { SV** const ary = AvARRAY(av); I32 index = AvFILLp(av) + 1; + ENTER; + SAVEFREESV(SvREFCNT_inc_simple_NN(av)); while (index) { SV * const sv = ary[--index]; /* undef the slot before freeing the value, because a @@ -455,13 +479,15 @@ Perl_av_clear(pTHX_ register AV *av) AvARRAY(av) = AvALLOC(av); } AvFILLp(av) = -1; - + if (real) LEAVE; } /* =for apidoc av_undef -Undefines the array. Frees the memory used by the array itself. +Undefines the array. Frees the memory used by the av to store its list of +scalars. If any destructors are triggered as a result, the av itself may +be freed. =cut */ @@ -469,21 +495,30 @@ Undefines the array. Frees the memory used by the array itself. void Perl_av_undef(pTHX_ register AV *av) { - assert(av); + bool real; + + PERL_ARGS_ASSERT_AV_UNDEF; + assert(SvTYPE(av) == SVt_PVAV); /* Give any tie a chance to cleanup first */ - if (SvTIED_mg((SV*)av, PERL_MAGIC_tied)) - av_fill(av, -1); /* mg_clear() ? */ + if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied)) + av_fill(av, -1); - if (AvREAL(av)) { + if ((real = !!AvREAL(av))) { register I32 key = AvFILLp(av) + 1; + ENTER; + SAVEFREESV(SvREFCNT_inc_simple_NN(av)); while (key) SvREFCNT_dec(AvARRAY(av)[--key]); } + Safefree(AvALLOC(av)); AvALLOC(av) = NULL; AvARRAY(av) = NULL; AvMAX(av) = AvFILLp(av) = -1; + + if(SvRMAGICAL(av)) mg_clear(MUTABLE_SV(av)); + if(real) LEAVE; } /* @@ -499,6 +534,8 @@ A small internal helper function to remove a commonly duplicated idiom. void Perl_av_create_and_push(pTHX_ AV **const avp, SV *const val) { + PERL_ARGS_ASSERT_AV_CREATE_AND_PUSH; + if (!*avp) *avp = newAV(); av_push(*avp, val); @@ -508,7 +545,9 @@ Perl_av_create_and_push(pTHX_ AV **const avp, SV *const val) =for apidoc av_push Pushes an SV onto the end of the array. The array will grow automatically -to accommodate the addition. +to accommodate the addition. This takes ownership of one reference count. + +Perl equivalent: C. =cut */ @@ -518,23 +557,16 @@ Perl_av_push(pTHX_ register AV *av, SV *val) { dVAR; MAGIC *mg; - assert(av); + + PERL_ARGS_ASSERT_AV_PUSH; + assert(SvTYPE(av) == SVt_PVAV); if (SvREADONLY(av)) - Perl_croak(aTHX_ PL_no_modify); - - if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) { - dSP; - PUSHSTACKi(PERLSI_MAGIC); - PUSHMARK(SP); - EXTEND(SP,2); - PUSHs(SvTIED_obj((SV*)av, mg)); - PUSHs(val); - PUTBACK; - ENTER; - call_method("PUSH", G_SCALAR|G_DISCARD); - LEAVE; - POPSTACK; + Perl_croak_no_modify(aTHX); + + if ((mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied))) { + Perl_magic_methcall(aTHX_ MUTABLE_SV(av), mg, "PUSH", G_DISCARD, 1, + val); return; } av_store(av,AvFILLp(av)+1,val); @@ -546,6 +578,8 @@ Perl_av_push(pTHX_ register AV *av, SV *val) Pops an SV off the end of the array. Returns C<&PL_sv_undef> if the array is empty. +Perl equivalent: C + =cut */ @@ -556,24 +590,15 @@ Perl_av_pop(pTHX_ register AV *av) SV *retval; MAGIC* mg; - assert(av); + PERL_ARGS_ASSERT_AV_POP; + assert(SvTYPE(av) == SVt_PVAV); if (SvREADONLY(av)) - Perl_croak(aTHX_ PL_no_modify); - if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) { - dSP; - PUSHSTACKi(PERLSI_MAGIC); - PUSHMARK(SP); - XPUSHs(SvTIED_obj((SV*)av, mg)); - PUTBACK; - ENTER; - if (call_method("POP", G_SCALAR)) { - retval = newSVsv(*PL_stack_sp--); - } else { - retval = &PL_sv_undef; - } - LEAVE; - POPSTACK; + Perl_croak_no_modify(aTHX); + if ((mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied))) { + retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(av), mg, "POP", 0, 0); + if (retval) + retval = newSVsv(retval); return retval; } if (AvFILL(av) < 0) @@ -581,7 +606,7 @@ Perl_av_pop(pTHX_ register AV *av) retval = AvARRAY(av)[AvFILLp(av)]; AvARRAY(av)[AvFILLp(av)--] = &PL_sv_undef; if (SvSMAGICAL(av)) - mg_set((SV*)av); + mg_set(MUTABLE_SV(av)); return retval; } @@ -599,6 +624,8 @@ A small internal helper function to remove a commonly duplicated idiom. SV ** Perl_av_create_and_unshift_one(pTHX_ AV **const avp, SV *const val) { + PERL_ARGS_ASSERT_AV_CREATE_AND_UNSHIFT_ONE; + if (!*avp) *avp = newAV(); av_unshift(*avp, 1); @@ -612,6 +639,8 @@ Unshift the given number of C values onto the beginning of the array. The array will grow automatically to accommodate the addition. You must then use C to assign values to these new elements. +Perl equivalent: C + =cut */ @@ -622,25 +651,15 @@ Perl_av_unshift(pTHX_ register AV *av, register I32 num) register I32 i; MAGIC* mg; - assert(av); + PERL_ARGS_ASSERT_AV_UNSHIFT; + assert(SvTYPE(av) == SVt_PVAV); if (SvREADONLY(av)) - Perl_croak(aTHX_ PL_no_modify); - - if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) { - dSP; - PUSHSTACKi(PERLSI_MAGIC); - PUSHMARK(SP); - EXTEND(SP,1+num); - PUSHs(SvTIED_obj((SV*)av, mg)); - while (num-- > 0) { - PUSHs(&PL_sv_undef); - } - PUTBACK; - ENTER; - call_method("UNSHIFT", G_SCALAR|G_DISCARD); - LEAVE; - POPSTACK; + Perl_croak_no_modify(aTHX); + + if ((mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied))) { + Perl_magic_methcall(aTHX_ MUTABLE_SV(av), mg, "UNSHIFT", + G_DISCARD | G_UNDEF_FILL, num); return; } @@ -660,10 +679,9 @@ Perl_av_unshift(pTHX_ register AV *av, register I32 num) } if (num) { register SV **ary; - I32 slide; - i = AvFILLp(av); + const I32 i = AvFILLp(av); /* Create extra elements */ - slide = i > 0 ? i : 0; + const I32 slide = i > 0 ? i : 0; num += slide; av_extend(av, i + num); AvFILLp(av) += num; @@ -682,7 +700,11 @@ Perl_av_unshift(pTHX_ register AV *av, register I32 num) /* =for apidoc av_shift -Shifts an SV off the beginning of the array. +Shifts an SV off the beginning of the +array. Returns C<&PL_sv_undef> if the +array is empty. + +Perl equivalent: C =cut */ @@ -694,24 +716,15 @@ Perl_av_shift(pTHX_ register AV *av) SV *retval; MAGIC* mg; - assert(av); + PERL_ARGS_ASSERT_AV_SHIFT; + assert(SvTYPE(av) == SVt_PVAV); if (SvREADONLY(av)) - Perl_croak(aTHX_ PL_no_modify); - if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) { - dSP; - PUSHSTACKi(PERLSI_MAGIC); - PUSHMARK(SP); - XPUSHs(SvTIED_obj((SV*)av, mg)); - PUTBACK; - ENTER; - if (call_method("SHIFT", G_SCALAR)) { - retval = newSVsv(*PL_stack_sp--); - } else { - retval = &PL_sv_undef; - } - LEAVE; - POPSTACK; + Perl_croak_no_modify(aTHX); + if ((mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied))) { + retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(av), mg, "SHIFT", 0, 0); + if (retval) + retval = newSVsv(retval); return retval; } if (AvFILL(av) < 0) @@ -723,7 +736,7 @@ Perl_av_shift(pTHX_ register AV *av) AvMAX(av)--; AvFILLp(av)--; if (SvSMAGICAL(av)) - mg_set((SV*)av); + mg_set(MUTABLE_SV(av)); return retval; } @@ -733,13 +746,17 @@ Perl_av_shift(pTHX_ register AV *av) Returns the highest index in the array. The number of elements in the array is C. Returns -1 if the array is empty. +The Perl equivalent for this is C<$#myarray>. + =cut */ I32 -Perl_av_len(pTHX_ register const AV *av) +Perl_av_len(pTHX_ AV *av) { - assert(av); + PERL_ARGS_ASSERT_AV_LEN; + assert(SvTYPE(av) == SVt_PVAV); + return AvFILL(av); } @@ -750,7 +767,7 @@ Set the highest index in the array to the given number, equivalent to Perl's C<$#array = $fill;>. The number of elements in the an array will be C after -av_fill() returns. If the array was previously shorter then the +av_fill() returns. If the array was previously shorter, then the additional elements appended are set to C. If the array was longer, then the excess elements are freed. C is the same as C. @@ -763,24 +780,16 @@ Perl_av_fill(pTHX_ register AV *av, I32 fill) dVAR; MAGIC *mg; - assert(av); + PERL_ARGS_ASSERT_AV_FILL; + assert(SvTYPE(av) == SVt_PVAV); if (fill < 0) fill = -1; - if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) { - dSP; - ENTER; - SAVETMPS; - PUSHSTACKi(PERLSI_MAGIC); - PUSHMARK(SP); - EXTEND(SP,2); - PUSHs(SvTIED_obj((SV*)av, mg)); - PUSHs(sv_2mortal(newSViv(fill+1))); - PUTBACK; - call_method("STORESIZE", G_SCALAR|G_DISCARD); - POPSTACK; - FREETMPS; - LEAVE; + if ((mg = SvTIED_mg((const SV *)av, PERL_MAGIC_tied))) { + SV *arg1 = sv_newmortal(); + sv_setiv(arg1, (IV)(fill + 1)); + Perl_magic_methcall(aTHX_ MUTABLE_SV(av), mg, "STORESIZE", G_DISCARD, + 1, arg1); return; } if (fill <= AvMAX(av)) { @@ -800,7 +809,7 @@ Perl_av_fill(pTHX_ register AV *av, I32 fill) AvFILLp(av) = fill; if (SvSMAGICAL(av)) - mg_set((SV*)av); + mg_set(MUTABLE_SV(av)); } else (void)av_store(av,fill,&PL_sv_undef); @@ -809,9 +818,11 @@ Perl_av_fill(pTHX_ register AV *av, I32 fill) /* =for apidoc av_delete -Deletes the element indexed by C from the array. Returns the -deleted element. If C equals C, the element is freed -and null is returned. +Deletes the element indexed by C from the array, makes the element mortal, +and returns it. If C equals C, the element is freed and null +is returned. Perl equivalent: C for the +non-C version and a void-context C for the +C version. =cut */ @@ -821,21 +832,23 @@ Perl_av_delete(pTHX_ AV *av, I32 key, I32 flags) dVAR; SV *sv; - assert(av); + PERL_ARGS_ASSERT_AV_DELETE; + assert(SvTYPE(av) == SVt_PVAV); if (SvREADONLY(av)) - Perl_croak(aTHX_ PL_no_modify); + Perl_croak_no_modify(aTHX); if (SvRMAGICAL(av)) { - const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied); - if ((tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata))) { + const MAGIC * const tied_magic + = mg_find((const SV *)av, PERL_MAGIC_tied); + if ((tied_magic || mg_find((const SV *)av, PERL_MAGIC_regdata))) { /* Handle negative array indices 20020222 MJD */ SV **svp; if (key < 0) { unsigned adjust_index = 1; if (tied_magic) { SV * const * const negative_indices_glob = - hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av, + hv_fetch(SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(av), tied_magic))), NEGATIVE_INDICES_VAR, 16, 0); if (negative_indices_glob @@ -882,7 +895,7 @@ Perl_av_delete(pTHX_ AV *av, I32 key, I32 flags) else AvARRAY(av)[key] = &PL_sv_undef; if (SvSMAGICAL(av)) - mg_set((SV*)av); + mg_set(MUTABLE_SV(av)); } if (flags & G_DISCARD) { SvREFCNT_dec(sv); @@ -901,17 +914,23 @@ Returns true if the element indexed by C has been initialized. This relies on the fact that uninitialized array elements are set to C<&PL_sv_undef>. +Perl equivalent: C. + =cut */ bool Perl_av_exists(pTHX_ AV *av, I32 key) { dVAR; - assert(av); + PERL_ARGS_ASSERT_AV_EXISTS; + assert(SvTYPE(av) == SVt_PVAV); if (SvRMAGICAL(av)) { - const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied); - if (tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata)) { + const MAGIC * const tied_magic + = mg_find((const SV *)av, PERL_MAGIC_tied); + const MAGIC * const regdata_magic + = mg_find((const SV *)av, PERL_MAGIC_regdata); + if (tied_magic || regdata_magic) { SV * const sv = sv_newmortal(); MAGIC *mg; /* Handle negative array indices 20020222 MJD */ @@ -919,7 +938,7 @@ Perl_av_exists(pTHX_ AV *av, I32 key) unsigned adjust_index = 1; if (tied_magic) { SV * const * const negative_indices_glob = - hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av, + hv_fetch(SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(av), tied_magic))), NEGATIVE_INDICES_VAR, 16, 0); if (negative_indices_glob @@ -930,14 +949,23 @@ Perl_av_exists(pTHX_ AV *av, I32 key) key += AvFILL(av) + 1; if (key < 0) return FALSE; + else + return TRUE; } } - mg_copy((SV*)av, sv, 0, key); + if(key >= 0 && regdata_magic) { + if (key <= AvFILL(av)) + return TRUE; + else + return FALSE; + } + + mg_copy(MUTABLE_SV(av), sv, 0, key); mg = mg_find(sv, PERL_MAGIC_tiedelem); if (mg) { magic_existspack(sv, mg); - return (bool)SvTRUE(sv); + return cBOOL(SvTRUE(sv)); } } @@ -958,25 +986,56 @@ Perl_av_exists(pTHX_ AV *av, I32 key) return FALSE; } -SV ** -Perl_av_arylen_p(pTHX_ AV *av) { +static MAGIC * +S_get_aux_mg(pTHX_ AV *av) { dVAR; MAGIC *mg; - assert(av); + PERL_ARGS_ASSERT_GET_AUX_MG; + assert(SvTYPE(av) == SVt_PVAV); - mg = mg_find((SV*)av, PERL_MAGIC_arylen_p); + mg = mg_find((const SV *)av, PERL_MAGIC_arylen_p); if (!mg) { - mg = sv_magicext((SV*)av, 0, PERL_MAGIC_arylen_p, &PL_vtbl_arylen_p, - 0, 0); + mg = sv_magicext(MUTABLE_SV(av), 0, PERL_MAGIC_arylen_p, + &PL_vtbl_arylen_p, 0, 0); assert(mg); /* sv_magicext won't set this for us because we pass in a NULL obj */ mg->mg_flags |= MGf_REFCOUNTED; } + return mg; +} + +SV ** +Perl_av_arylen_p(pTHX_ AV *av) { + MAGIC *const mg = get_aux_mg(av); + + PERL_ARGS_ASSERT_AV_ARYLEN_P; + assert(SvTYPE(av) == SVt_PVAV); + return &(mg->mg_obj); } +IV * +Perl_av_iter_p(pTHX_ AV *av) { + MAGIC *const mg = get_aux_mg(av); + + PERL_ARGS_ASSERT_AV_ITER_P; + assert(SvTYPE(av) == SVt_PVAV); + +#if IVSIZE == I32SIZE + return (IV *)&(mg->mg_len); +#else + if (!mg->mg_ptr) { + IV *temp; + mg->mg_len = IVSIZE; + Newxz(temp, 1, IV); + mg->mg_ptr = (char *) temp; + } + return (IV *)mg->mg_ptr; +#endif +} + /* * Local variables: * c-indentation-style: bsd