6724 lines
159 KiB
C
6724 lines
159 KiB
C
/* op.c
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*
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* Copyright (c) 1991-2000, Larry Wall
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Artistic License, as specified in the README file.
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*
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*/
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/*
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* "You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was
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* our Mr. Bilbo's first cousin on the mother's side (her mother being the
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* youngest of the Old Took's daughters); and Mr. Drogo was his second
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* cousin. So Mr. Frodo is his first *and* second cousin, once removed
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* either way, as the saying is, if you follow me." --the Gaffer
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*/
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#include "EXTERN.h"
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#define PERL_IN_OP_C
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#include "perl.h"
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#include "keywords.h"
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/* #define PL_OP_SLAB_ALLOC */
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#ifdef PL_OP_SLAB_ALLOC
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#define SLAB_SIZE 8192
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static char *PL_OpPtr = NULL;
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static int PL_OpSpace = 0;
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#define NewOp(m,var,c,type) do { if ((PL_OpSpace -= c*sizeof(type)) >= 0) \
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var = (type *)(PL_OpPtr -= c*sizeof(type)); \
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else \
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var = (type *) Slab_Alloc(m,c*sizeof(type)); \
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} while (0)
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STATIC void *
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S_Slab_Alloc(pTHX_ int m, size_t sz)
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{
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Newz(m,PL_OpPtr,SLAB_SIZE,char);
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PL_OpSpace = SLAB_SIZE - sz;
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return PL_OpPtr += PL_OpSpace;
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}
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#else
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#define NewOp(m, var, c, type) Newz(m, var, c, type)
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#endif
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/*
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* In the following definition, the ", Nullop" is just to make the compiler
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* think the expression is of the right type: croak actually does a Siglongjmp.
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*/
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#define CHECKOP(type,o) \
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((PL_op_mask && PL_op_mask[type]) \
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? ( op_free((OP*)o), \
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Perl_croak(aTHX_ "%s trapped by operation mask", PL_op_desc[type]), \
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Nullop ) \
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: CALL_FPTR(PL_check[type])(aTHX_ (OP*)o))
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#define PAD_MAX 999999999
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STATIC char*
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S_gv_ename(pTHX_ GV *gv)
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{
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STRLEN n_a;
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SV* tmpsv = sv_newmortal();
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gv_efullname3(tmpsv, gv, Nullch);
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return SvPV(tmpsv,n_a);
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}
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STATIC OP *
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S_no_fh_allowed(pTHX_ OP *o)
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{
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yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function",
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PL_op_desc[o->op_type]));
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return o;
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}
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STATIC OP *
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S_too_few_arguments(pTHX_ OP *o, char *name)
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{
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yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name));
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return o;
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}
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STATIC OP *
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S_too_many_arguments(pTHX_ OP *o, char *name)
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{
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yyerror(Perl_form(aTHX_ "Too many arguments for %s", name));
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return o;
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}
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STATIC void
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S_bad_type(pTHX_ I32 n, char *t, char *name, OP *kid)
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{
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yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)",
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(int)n, name, t, PL_op_desc[kid->op_type]));
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}
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STATIC void
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S_no_bareword_allowed(pTHX_ OP *o)
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{
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qerror(Perl_mess(aTHX_
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"Bareword \"%s\" not allowed while \"strict subs\" in use",
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SvPV_nolen(cSVOPo_sv)));
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}
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/* "register" allocation */
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PADOFFSET
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Perl_pad_allocmy(pTHX_ char *name)
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{
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dTHR;
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PADOFFSET off;
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SV *sv;
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if (!(PL_in_my == KEY_our ||
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isALPHA(name[1]) ||
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(PL_hints & HINT_UTF8 && (name[1] & 0xc0) == 0xc0) ||
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(name[1] == '_' && (int)strlen(name) > 2)))
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{
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if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) {
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/* 1999-02-27 mjd@plover.com */
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char *p;
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p = strchr(name, '\0');
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/* The next block assumes the buffer is at least 205 chars
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long. At present, it's always at least 256 chars. */
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if (p-name > 200) {
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strcpy(name+200, "...");
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p = name+199;
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}
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else {
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p[1] = '\0';
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}
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/* Move everything else down one character */
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for (; p-name > 2; p--)
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*p = *(p-1);
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name[2] = toCTRL(name[1]);
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name[1] = '^';
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}
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yyerror(Perl_form(aTHX_ "Can't use global %s in \"my\"",name));
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}
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if (ckWARN(WARN_MISC) && AvFILLp(PL_comppad_name) >= 0) {
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SV **svp = AvARRAY(PL_comppad_name);
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HV *ourstash = (PL_curstash ? PL_curstash : PL_defstash);
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PADOFFSET top = AvFILLp(PL_comppad_name);
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for (off = top; off > PL_comppad_name_floor; off--) {
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if ((sv = svp[off])
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&& sv != &PL_sv_undef
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&& (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0)
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&& (PL_in_my != KEY_our
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|| ((SvFLAGS(sv) & SVpad_OUR) && GvSTASH(sv) == ourstash))
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&& strEQ(name, SvPVX(sv)))
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{
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Perl_warner(aTHX_ WARN_MISC,
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"\"%s\" variable %s masks earlier declaration in same %s",
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(PL_in_my == KEY_our ? "our" : "my"),
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name,
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(SvIVX(sv) == PAD_MAX ? "scope" : "statement"));
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--off;
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break;
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}
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}
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if (PL_in_my == KEY_our) {
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do {
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if ((sv = svp[off])
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&& sv != &PL_sv_undef
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&& ((SvFLAGS(sv) & SVpad_OUR) && GvSTASH(sv) == ourstash)
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&& strEQ(name, SvPVX(sv)))
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{
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Perl_warner(aTHX_ WARN_MISC,
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"\"our\" variable %s redeclared", name);
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Perl_warner(aTHX_ WARN_MISC,
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"\t(Did you mean \"local\" instead of \"our\"?)\n");
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break;
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}
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} while ( off-- > 0 );
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}
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}
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off = pad_alloc(OP_PADSV, SVs_PADMY);
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sv = NEWSV(1102,0);
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sv_upgrade(sv, SVt_PVNV);
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sv_setpv(sv, name);
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if (PL_in_my_stash) {
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if (*name != '$')
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yyerror(Perl_form(aTHX_ "Can't declare class for non-scalar %s in \"%s\"",
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name, PL_in_my == KEY_our ? "our" : "my"));
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SvOBJECT_on(sv);
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(void)SvUPGRADE(sv, SVt_PVMG);
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SvSTASH(sv) = (HV*)SvREFCNT_inc(PL_in_my_stash);
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PL_sv_objcount++;
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}
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if (PL_in_my == KEY_our) {
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(void)SvUPGRADE(sv, SVt_PVGV);
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GvSTASH(sv) = (HV*)SvREFCNT_inc(PL_curstash ? (SV*)PL_curstash : (SV*)PL_defstash);
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SvFLAGS(sv) |= SVpad_OUR;
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}
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av_store(PL_comppad_name, off, sv);
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SvNVX(sv) = (NV)PAD_MAX;
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SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */
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if (!PL_min_intro_pending)
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PL_min_intro_pending = off;
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PL_max_intro_pending = off;
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if (*name == '@')
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av_store(PL_comppad, off, (SV*)newAV());
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else if (*name == '%')
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av_store(PL_comppad, off, (SV*)newHV());
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SvPADMY_on(PL_curpad[off]);
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return off;
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}
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STATIC PADOFFSET
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S_pad_addlex(pTHX_ SV *proto_namesv)
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{
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SV *namesv = NEWSV(1103,0);
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PADOFFSET newoff = pad_alloc(OP_PADSV, SVs_PADMY);
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sv_upgrade(namesv, SVt_PVNV);
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sv_setpv(namesv, SvPVX(proto_namesv));
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av_store(PL_comppad_name, newoff, namesv);
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SvNVX(namesv) = (NV)PL_curcop->cop_seq;
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SvIVX(namesv) = PAD_MAX; /* A ref, intro immediately */
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SvFAKE_on(namesv); /* A ref, not a real var */
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if (SvFLAGS(proto_namesv) & SVpad_OUR) { /* An "our" variable */
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SvFLAGS(namesv) |= SVpad_OUR;
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(void)SvUPGRADE(namesv, SVt_PVGV);
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GvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*)GvSTASH(proto_namesv));
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}
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if (SvOBJECT(proto_namesv)) { /* A typed var */
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SvOBJECT_on(namesv);
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(void)SvUPGRADE(namesv, SVt_PVMG);
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SvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*)SvSTASH(proto_namesv));
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PL_sv_objcount++;
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}
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return newoff;
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}
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#define FINDLEX_NOSEARCH 1 /* don't search outer contexts */
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STATIC PADOFFSET
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S_pad_findlex(pTHX_ char *name, PADOFFSET newoff, U32 seq, CV* startcv,
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I32 cx_ix, I32 saweval, U32 flags)
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{
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dTHR;
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CV *cv;
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I32 off;
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SV *sv;
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register I32 i;
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register PERL_CONTEXT *cx;
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for (cv = startcv; cv; cv = CvOUTSIDE(cv)) {
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AV *curlist = CvPADLIST(cv);
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SV **svp = av_fetch(curlist, 0, FALSE);
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AV *curname;
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if (!svp || *svp == &PL_sv_undef)
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continue;
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curname = (AV*)*svp;
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svp = AvARRAY(curname);
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for (off = AvFILLp(curname); off > 0; off--) {
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if ((sv = svp[off]) &&
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sv != &PL_sv_undef &&
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seq <= SvIVX(sv) &&
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seq > I_32(SvNVX(sv)) &&
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strEQ(SvPVX(sv), name))
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{
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I32 depth;
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AV *oldpad;
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SV *oldsv;
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depth = CvDEPTH(cv);
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if (!depth) {
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if (newoff) {
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if (SvFAKE(sv))
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continue;
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return 0; /* don't clone from inactive stack frame */
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}
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depth = 1;
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}
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oldpad = (AV*)AvARRAY(curlist)[depth];
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oldsv = *av_fetch(oldpad, off, TRUE);
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if (!newoff) { /* Not a mere clone operation. */
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newoff = pad_addlex(sv);
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if (CvANON(PL_compcv) || SvTYPE(PL_compcv) == SVt_PVFM) {
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/* "It's closures all the way down." */
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CvCLONE_on(PL_compcv);
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if (cv == startcv) {
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if (CvANON(PL_compcv))
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oldsv = Nullsv; /* no need to keep ref */
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}
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else {
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CV *bcv;
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for (bcv = startcv;
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bcv && bcv != cv && !CvCLONE(bcv);
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bcv = CvOUTSIDE(bcv))
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{
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if (CvANON(bcv)) {
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/* install the missing pad entry in intervening
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* nested subs and mark them cloneable.
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* XXX fix pad_foo() to not use globals */
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AV *ocomppad_name = PL_comppad_name;
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AV *ocomppad = PL_comppad;
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SV **ocurpad = PL_curpad;
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AV *padlist = CvPADLIST(bcv);
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PL_comppad_name = (AV*)AvARRAY(padlist)[0];
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PL_comppad = (AV*)AvARRAY(padlist)[1];
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PL_curpad = AvARRAY(PL_comppad);
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pad_addlex(sv);
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PL_comppad_name = ocomppad_name;
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PL_comppad = ocomppad;
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PL_curpad = ocurpad;
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CvCLONE_on(bcv);
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}
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else {
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if (ckWARN(WARN_CLOSURE)
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&& !CvUNIQUE(bcv) && !CvUNIQUE(cv))
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{
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Perl_warner(aTHX_ WARN_CLOSURE,
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"Variable \"%s\" may be unavailable",
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name);
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}
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break;
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}
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}
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}
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}
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else if (!CvUNIQUE(PL_compcv)) {
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if (ckWARN(WARN_CLOSURE) && !SvFAKE(sv) && !CvUNIQUE(cv))
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Perl_warner(aTHX_ WARN_CLOSURE,
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"Variable \"%s\" will not stay shared", name);
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}
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}
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av_store(PL_comppad, newoff, SvREFCNT_inc(oldsv));
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return newoff;
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}
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}
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}
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if (flags & FINDLEX_NOSEARCH)
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return 0;
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/* Nothing in current lexical context--try eval's context, if any.
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* This is necessary to let the perldb get at lexically scoped variables.
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* XXX This will also probably interact badly with eval tree caching.
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*/
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for (i = cx_ix; i >= 0; i--) {
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cx = &cxstack[i];
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switch (CxTYPE(cx)) {
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default:
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if (i == 0 && saweval) {
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seq = cxstack[saweval].blk_oldcop->cop_seq;
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return pad_findlex(name, newoff, seq, PL_main_cv, -1, saweval, 0);
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}
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break;
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case CXt_EVAL:
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switch (cx->blk_eval.old_op_type) {
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case OP_ENTEREVAL:
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if (CxREALEVAL(cx))
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saweval = i;
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break;
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case OP_DOFILE:
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case OP_REQUIRE:
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/* require/do must have their own scope */
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return 0;
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}
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break;
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case CXt_FORMAT:
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case CXt_SUB:
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if (!saweval)
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return 0;
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cv = cx->blk_sub.cv;
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if (PL_debstash && CvSTASH(cv) == PL_debstash) { /* ignore DB'* scope */
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saweval = i; /* so we know where we were called from */
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continue;
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}
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seq = cxstack[saweval].blk_oldcop->cop_seq;
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return pad_findlex(name, newoff, seq, cv, i-1, saweval,FINDLEX_NOSEARCH);
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}
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}
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return 0;
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}
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PADOFFSET
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Perl_pad_findmy(pTHX_ char *name)
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{
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dTHR;
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I32 off;
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I32 pendoff = 0;
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SV *sv;
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SV **svp = AvARRAY(PL_comppad_name);
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U32 seq = PL_cop_seqmax;
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PERL_CONTEXT *cx;
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CV *outside;
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#ifdef USE_THREADS
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/*
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* Special case to get lexical (and hence per-thread) @_.
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* XXX I need to find out how to tell at parse-time whether use
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* of @_ should refer to a lexical (from a sub) or defgv (global
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* scope and maybe weird sub-ish things like formats). See
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* startsub in perly.y. It's possible that @_ could be lexical
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* (at least from subs) even in non-threaded perl.
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*/
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if (strEQ(name, "@_"))
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return 0; /* success. (NOT_IN_PAD indicates failure) */
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#endif /* USE_THREADS */
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/* The one we're looking for is probably just before comppad_name_fill. */
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for (off = AvFILLp(PL_comppad_name); off > 0; off--) {
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if ((sv = svp[off]) &&
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sv != &PL_sv_undef &&
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(!SvIVX(sv) ||
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(seq <= SvIVX(sv) &&
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seq > I_32(SvNVX(sv)))) &&
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strEQ(SvPVX(sv), name))
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{
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if (SvIVX(sv) || SvFLAGS(sv) & SVpad_OUR)
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return (PADOFFSET)off;
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pendoff = off; /* this pending def. will override import */
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}
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}
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outside = CvOUTSIDE(PL_compcv);
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/* Check if if we're compiling an eval'', and adjust seq to be the
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* eval's seq number. This depends on eval'' having a non-null
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* CvOUTSIDE() while it is being compiled. The eval'' itself is
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* identified by CvEVAL being true and CvGV being null. */
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if (outside && CvEVAL(PL_compcv) && !CvGV(PL_compcv) && cxstack_ix >= 0) {
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cx = &cxstack[cxstack_ix];
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if (CxREALEVAL(cx))
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seq = cx->blk_oldcop->cop_seq;
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}
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/* See if it's in a nested scope */
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off = pad_findlex(name, 0, seq, outside, cxstack_ix, 0, 0);
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if (off) {
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/* If there is a pending local definition, this new alias must die */
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if (pendoff)
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SvIVX(AvARRAY(PL_comppad_name)[off]) = seq;
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return off; /* pad_findlex returns 0 for failure...*/
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}
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return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */
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}
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|
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void
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Perl_pad_leavemy(pTHX_ I32 fill)
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{
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dTHR;
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I32 off;
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SV **svp = AvARRAY(PL_comppad_name);
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SV *sv;
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if (PL_min_intro_pending && fill < PL_min_intro_pending) {
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for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) {
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if ((sv = svp[off]) && sv != &PL_sv_undef && ckWARN_d(WARN_INTERNAL))
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Perl_warner(aTHX_ WARN_INTERNAL, "%s never introduced", SvPVX(sv));
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}
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}
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/* "Deintroduce" my variables that are leaving with this scope. */
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for (off = AvFILLp(PL_comppad_name); off > fill; off--) {
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if ((sv = svp[off]) && sv != &PL_sv_undef && SvIVX(sv) == PAD_MAX)
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SvIVX(sv) = PL_cop_seqmax;
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}
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}
|
|
|
|
PADOFFSET
|
|
Perl_pad_alloc(pTHX_ I32 optype, U32 tmptype)
|
|
{
|
|
dTHR;
|
|
SV *sv;
|
|
I32 retval;
|
|
|
|
if (AvARRAY(PL_comppad) != PL_curpad)
|
|
Perl_croak(aTHX_ "panic: pad_alloc");
|
|
if (PL_pad_reset_pending)
|
|
pad_reset();
|
|
if (tmptype & SVs_PADMY) {
|
|
do {
|
|
sv = *av_fetch(PL_comppad, AvFILLp(PL_comppad) + 1, TRUE);
|
|
} while (SvPADBUSY(sv)); /* need a fresh one */
|
|
retval = AvFILLp(PL_comppad);
|
|
}
|
|
else {
|
|
SV **names = AvARRAY(PL_comppad_name);
|
|
SSize_t names_fill = AvFILLp(PL_comppad_name);
|
|
for (;;) {
|
|
/*
|
|
* "foreach" index vars temporarily become aliases to non-"my"
|
|
* values. Thus we must skip, not just pad values that are
|
|
* marked as current pad values, but also those with names.
|
|
*/
|
|
if (++PL_padix <= names_fill &&
|
|
(sv = names[PL_padix]) && sv != &PL_sv_undef)
|
|
continue;
|
|
sv = *av_fetch(PL_comppad, PL_padix, TRUE);
|
|
if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY)) && !IS_PADGV(sv))
|
|
break;
|
|
}
|
|
retval = PL_padix;
|
|
}
|
|
SvFLAGS(sv) |= tmptype;
|
|
PL_curpad = AvARRAY(PL_comppad);
|
|
#ifdef USE_THREADS
|
|
DEBUG_X(PerlIO_printf(Perl_debug_log,
|
|
"0x%"UVxf" Pad 0x%"UVxf" alloc %ld for %s\n",
|
|
PTR2UV(thr), PTR2UV(PL_curpad),
|
|
(long) retval, PL_op_name[optype]));
|
|
#else
|
|
DEBUG_X(PerlIO_printf(Perl_debug_log,
|
|
"Pad 0x%"UVxf" alloc %ld for %s\n",
|
|
PTR2UV(PL_curpad),
|
|
(long) retval, PL_op_name[optype]));
|
|
#endif /* USE_THREADS */
|
|
return (PADOFFSET)retval;
|
|
}
|
|
|
|
SV *
|
|
Perl_pad_sv(pTHX_ PADOFFSET po)
|
|
{
|
|
dTHR;
|
|
#ifdef USE_THREADS
|
|
DEBUG_X(PerlIO_printf(Perl_debug_log,
|
|
"0x%"UVxf" Pad 0x%"UVxf" sv %"IVdf"\n",
|
|
PTR2UV(thr), PTR2UV(PL_curpad), (IV)po));
|
|
#else
|
|
if (!po)
|
|
Perl_croak(aTHX_ "panic: pad_sv po");
|
|
DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" sv %"IVdf"\n",
|
|
PTR2UV(PL_curpad), (IV)po));
|
|
#endif /* USE_THREADS */
|
|
return PL_curpad[po]; /* eventually we'll turn this into a macro */
|
|
}
|
|
|
|
void
|
|
Perl_pad_free(pTHX_ PADOFFSET po)
|
|
{
|
|
dTHR;
|
|
if (!PL_curpad)
|
|
return;
|
|
if (AvARRAY(PL_comppad) != PL_curpad)
|
|
Perl_croak(aTHX_ "panic: pad_free curpad");
|
|
if (!po)
|
|
Perl_croak(aTHX_ "panic: pad_free po");
|
|
#ifdef USE_THREADS
|
|
DEBUG_X(PerlIO_printf(Perl_debug_log,
|
|
"0x%"UVxf" Pad 0x%"UVxf" free %"IVdf"\n",
|
|
PTR2UV(thr), PTR2UV(PL_curpad), (IV)po));
|
|
#else
|
|
DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" free %"IVdf"\n",
|
|
PTR2UV(PL_curpad), (IV)po));
|
|
#endif /* USE_THREADS */
|
|
if (PL_curpad[po] && PL_curpad[po] != &PL_sv_undef) {
|
|
SvPADTMP_off(PL_curpad[po]);
|
|
#ifdef USE_ITHREADS
|
|
SvREADONLY_off(PL_curpad[po]); /* could be a freed constant */
|
|
#endif
|
|
}
|
|
if ((I32)po < PL_padix)
|
|
PL_padix = po - 1;
|
|
}
|
|
|
|
void
|
|
Perl_pad_swipe(pTHX_ PADOFFSET po)
|
|
{
|
|
dTHR;
|
|
if (AvARRAY(PL_comppad) != PL_curpad)
|
|
Perl_croak(aTHX_ "panic: pad_swipe curpad");
|
|
if (!po)
|
|
Perl_croak(aTHX_ "panic: pad_swipe po");
|
|
#ifdef USE_THREADS
|
|
DEBUG_X(PerlIO_printf(Perl_debug_log,
|
|
"0x%"UVxf" Pad 0x%"UVxf" swipe %"IVdf"\n",
|
|
PTR2UV(thr), PTR2UV(PL_curpad), (IV)po));
|
|
#else
|
|
DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" swipe %"IVdf"\n",
|
|
PTR2UV(PL_curpad), (IV)po));
|
|
#endif /* USE_THREADS */
|
|
SvPADTMP_off(PL_curpad[po]);
|
|
PL_curpad[po] = NEWSV(1107,0);
|
|
SvPADTMP_on(PL_curpad[po]);
|
|
if ((I32)po < PL_padix)
|
|
PL_padix = po - 1;
|
|
}
|
|
|
|
/* XXX pad_reset() is currently disabled because it results in serious bugs.
|
|
* It causes pad temp TARGs to be shared between OPs. Since TARGs are pushed
|
|
* on the stack by OPs that use them, there are several ways to get an alias
|
|
* to a shared TARG. Such an alias will change randomly and unpredictably.
|
|
* We avoid doing this until we can think of a Better Way.
|
|
* GSAR 97-10-29 */
|
|
void
|
|
Perl_pad_reset(pTHX)
|
|
{
|
|
#ifdef USE_BROKEN_PAD_RESET
|
|
dTHR;
|
|
register I32 po;
|
|
|
|
if (AvARRAY(PL_comppad) != PL_curpad)
|
|
Perl_croak(aTHX_ "panic: pad_reset curpad");
|
|
#ifdef USE_THREADS
|
|
DEBUG_X(PerlIO_printf(Perl_debug_log,
|
|
"0x%"UVxf" Pad 0x%"UVxf" reset\n",
|
|
PTR2UV(thr), PTR2UV(PL_curpad)));
|
|
#else
|
|
DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" reset\n",
|
|
PTR2UV(PL_curpad)));
|
|
#endif /* USE_THREADS */
|
|
if (!PL_tainting) { /* Can't mix tainted and non-tainted temporaries. */
|
|
for (po = AvMAX(PL_comppad); po > PL_padix_floor; po--) {
|
|
if (PL_curpad[po] && !SvIMMORTAL(PL_curpad[po]))
|
|
SvPADTMP_off(PL_curpad[po]);
|
|
}
|
|
PL_padix = PL_padix_floor;
|
|
}
|
|
#endif
|
|
PL_pad_reset_pending = FALSE;
|
|
}
|
|
|
|
#ifdef USE_THREADS
|
|
/* find_threadsv is not reentrant */
|
|
PADOFFSET
|
|
Perl_find_threadsv(pTHX_ const char *name)
|
|
{
|
|
dTHR;
|
|
char *p;
|
|
PADOFFSET key;
|
|
SV **svp;
|
|
/* We currently only handle names of a single character */
|
|
p = strchr(PL_threadsv_names, *name);
|
|
if (!p)
|
|
return NOT_IN_PAD;
|
|
key = p - PL_threadsv_names;
|
|
MUTEX_LOCK(&thr->mutex);
|
|
svp = av_fetch(thr->threadsv, key, FALSE);
|
|
if (svp)
|
|
MUTEX_UNLOCK(&thr->mutex);
|
|
else {
|
|
SV *sv = NEWSV(0, 0);
|
|
av_store(thr->threadsv, key, sv);
|
|
thr->threadsvp = AvARRAY(thr->threadsv);
|
|
MUTEX_UNLOCK(&thr->mutex);
|
|
/*
|
|
* Some magic variables used to be automagically initialised
|
|
* in gv_fetchpv. Those which are now per-thread magicals get
|
|
* initialised here instead.
|
|
*/
|
|
switch (*name) {
|
|
case '_':
|
|
break;
|
|
case ';':
|
|
sv_setpv(sv, "\034");
|
|
sv_magic(sv, 0, 0, name, 1);
|
|
break;
|
|
case '&':
|
|
case '`':
|
|
case '\'':
|
|
PL_sawampersand = TRUE;
|
|
/* FALL THROUGH */
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
SvREADONLY_on(sv);
|
|
/* FALL THROUGH */
|
|
|
|
/* XXX %! tied to Errno.pm needs to be added here.
|
|
* See gv_fetchpv(). */
|
|
/* case '!': */
|
|
|
|
default:
|
|
sv_magic(sv, 0, 0, name, 1);
|
|
}
|
|
DEBUG_S(PerlIO_printf(Perl_error_log,
|
|
"find_threadsv: new SV %p for $%s%c\n",
|
|
sv, (*name < 32) ? "^" : "",
|
|
(*name < 32) ? toCTRL(*name) : *name));
|
|
}
|
|
return key;
|
|
}
|
|
#endif /* USE_THREADS */
|
|
|
|
/* Destructor */
|
|
|
|
void
|
|
Perl_op_free(pTHX_ OP *o)
|
|
{
|
|
register OP *kid, *nextkid;
|
|
OPCODE type;
|
|
|
|
if (!o || o->op_seq == (U16)-1)
|
|
return;
|
|
|
|
if (o->op_private & OPpREFCOUNTED) {
|
|
switch (o->op_type) {
|
|
case OP_LEAVESUB:
|
|
case OP_LEAVESUBLV:
|
|
case OP_LEAVEEVAL:
|
|
case OP_LEAVE:
|
|
case OP_SCOPE:
|
|
case OP_LEAVEWRITE:
|
|
OP_REFCNT_LOCK;
|
|
if (OpREFCNT_dec(o)) {
|
|
OP_REFCNT_UNLOCK;
|
|
return;
|
|
}
|
|
OP_REFCNT_UNLOCK;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (o->op_flags & OPf_KIDS) {
|
|
for (kid = cUNOPo->op_first; kid; kid = nextkid) {
|
|
nextkid = kid->op_sibling; /* Get before next freeing kid */
|
|
op_free(kid);
|
|
}
|
|
}
|
|
type = o->op_type;
|
|
if (type == OP_NULL)
|
|
type = o->op_targ;
|
|
|
|
/* COP* is not cleared by op_clear() so that we may track line
|
|
* numbers etc even after null() */
|
|
if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE)
|
|
cop_free((COP*)o);
|
|
|
|
op_clear(o);
|
|
|
|
#ifdef PL_OP_SLAB_ALLOC
|
|
if ((char *) o == PL_OpPtr)
|
|
{
|
|
}
|
|
#else
|
|
Safefree(o);
|
|
#endif
|
|
}
|
|
|
|
STATIC void
|
|
S_op_clear(pTHX_ OP *o)
|
|
{
|
|
switch (o->op_type) {
|
|
case OP_NULL: /* Was holding old type, if any. */
|
|
case OP_ENTEREVAL: /* Was holding hints. */
|
|
#ifdef USE_THREADS
|
|
case OP_THREADSV: /* Was holding index into thr->threadsv AV. */
|
|
#endif
|
|
o->op_targ = 0;
|
|
break;
|
|
#ifdef USE_THREADS
|
|
case OP_ENTERITER:
|
|
if (!(o->op_flags & OPf_SPECIAL))
|
|
break;
|
|
/* FALL THROUGH */
|
|
#endif /* USE_THREADS */
|
|
default:
|
|
if (!(o->op_flags & OPf_REF)
|
|
|| (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst)))
|
|
break;
|
|
/* FALL THROUGH */
|
|
case OP_GVSV:
|
|
case OP_GV:
|
|
case OP_AELEMFAST:
|
|
#ifdef USE_ITHREADS
|
|
if (cPADOPo->op_padix > 0) {
|
|
if (PL_curpad) {
|
|
GV *gv = cGVOPo_gv;
|
|
pad_swipe(cPADOPo->op_padix);
|
|
/* No GvIN_PAD_off(gv) here, because other references may still
|
|
* exist on the pad */
|
|
SvREFCNT_dec(gv);
|
|
}
|
|
cPADOPo->op_padix = 0;
|
|
}
|
|
#else
|
|
SvREFCNT_dec(cSVOPo->op_sv);
|
|
cSVOPo->op_sv = Nullsv;
|
|
#endif
|
|
break;
|
|
case OP_CONST:
|
|
SvREFCNT_dec(cSVOPo->op_sv);
|
|
cSVOPo->op_sv = Nullsv;
|
|
break;
|
|
case OP_GOTO:
|
|
case OP_NEXT:
|
|
case OP_LAST:
|
|
case OP_REDO:
|
|
if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS))
|
|
break;
|
|
/* FALL THROUGH */
|
|
case OP_TRANS:
|
|
if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) {
|
|
SvREFCNT_dec(cSVOPo->op_sv);
|
|
cSVOPo->op_sv = Nullsv;
|
|
}
|
|
else {
|
|
Safefree(cPVOPo->op_pv);
|
|
cPVOPo->op_pv = Nullch;
|
|
}
|
|
break;
|
|
case OP_SUBST:
|
|
op_free(cPMOPo->op_pmreplroot);
|
|
goto clear_pmop;
|
|
case OP_PUSHRE:
|
|
#ifdef USE_ITHREADS
|
|
if ((PADOFFSET)cPMOPo->op_pmreplroot) {
|
|
if (PL_curpad) {
|
|
GV *gv = (GV*)PL_curpad[(PADOFFSET)cPMOPo->op_pmreplroot];
|
|
pad_swipe((PADOFFSET)cPMOPo->op_pmreplroot);
|
|
/* No GvIN_PAD_off(gv) here, because other references may still
|
|
* exist on the pad */
|
|
SvREFCNT_dec(gv);
|
|
}
|
|
}
|
|
#else
|
|
SvREFCNT_dec((SV*)cPMOPo->op_pmreplroot);
|
|
#endif
|
|
/* FALL THROUGH */
|
|
case OP_MATCH:
|
|
case OP_QR:
|
|
clear_pmop:
|
|
cPMOPo->op_pmreplroot = Nullop;
|
|
ReREFCNT_dec(cPMOPo->op_pmregexp);
|
|
cPMOPo->op_pmregexp = (REGEXP*)NULL;
|
|
break;
|
|
}
|
|
|
|
if (o->op_targ > 0) {
|
|
pad_free(o->op_targ);
|
|
o->op_targ = 0;
|
|
}
|
|
}
|
|
|
|
STATIC void
|
|
S_cop_free(pTHX_ COP* cop)
|
|
{
|
|
Safefree(cop->cop_label);
|
|
#ifdef USE_ITHREADS
|
|
Safefree(CopFILE(cop)); /* XXXXX share in a pvtable? */
|
|
Safefree(CopSTASHPV(cop)); /* XXXXX share in a pvtable? */
|
|
#else
|
|
/* NOTE: COP.cop_stash is not refcounted */
|
|
SvREFCNT_dec(CopFILEGV(cop));
|
|
#endif
|
|
if (! specialWARN(cop->cop_warnings))
|
|
SvREFCNT_dec(cop->cop_warnings);
|
|
}
|
|
|
|
STATIC void
|
|
S_null(pTHX_ OP *o)
|
|
{
|
|
if (o->op_type == OP_NULL)
|
|
return;
|
|
op_clear(o);
|
|
o->op_targ = o->op_type;
|
|
o->op_type = OP_NULL;
|
|
o->op_ppaddr = PL_ppaddr[OP_NULL];
|
|
}
|
|
|
|
/* Contextualizers */
|
|
|
|
#define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o))
|
|
|
|
OP *
|
|
Perl_linklist(pTHX_ OP *o)
|
|
{
|
|
register OP *kid;
|
|
|
|
if (o->op_next)
|
|
return o->op_next;
|
|
|
|
/* establish postfix order */
|
|
if (cUNOPo->op_first) {
|
|
o->op_next = LINKLIST(cUNOPo->op_first);
|
|
for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
|
|
if (kid->op_sibling)
|
|
kid->op_next = LINKLIST(kid->op_sibling);
|
|
else
|
|
kid->op_next = o;
|
|
}
|
|
}
|
|
else
|
|
o->op_next = o;
|
|
|
|
return o->op_next;
|
|
}
|
|
|
|
OP *
|
|
Perl_scalarkids(pTHX_ OP *o)
|
|
{
|
|
OP *kid;
|
|
if (o && o->op_flags & OPf_KIDS) {
|
|
for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling)
|
|
scalar(kid);
|
|
}
|
|
return o;
|
|
}
|
|
|
|
STATIC OP *
|
|
S_scalarboolean(pTHX_ OP *o)
|
|
{
|
|
if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) {
|
|
dTHR;
|
|
if (ckWARN(WARN_SYNTAX)) {
|
|
line_t oldline = CopLINE(PL_curcop);
|
|
|
|
if (PL_copline != NOLINE)
|
|
CopLINE_set(PL_curcop, PL_copline);
|
|
Perl_warner(aTHX_ WARN_SYNTAX, "Found = in conditional, should be ==");
|
|
CopLINE_set(PL_curcop, oldline);
|
|
}
|
|
}
|
|
return scalar(o);
|
|
}
|
|
|
|
OP *
|
|
Perl_scalar(pTHX_ OP *o)
|
|
{
|
|
OP *kid;
|
|
|
|
/* assumes no premature commitment */
|
|
if (!o || (o->op_flags & OPf_WANT) || PL_error_count
|
|
|| o->op_type == OP_RETURN)
|
|
{
|
|
return o;
|
|
}
|
|
|
|
o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR;
|
|
|
|
switch (o->op_type) {
|
|
case OP_REPEAT:
|
|
if (o->op_private & OPpREPEAT_DOLIST)
|
|
null(((LISTOP*)cBINOPo->op_first)->op_first);
|
|
scalar(cBINOPo->op_first);
|
|
break;
|
|
case OP_OR:
|
|
case OP_AND:
|
|
case OP_COND_EXPR:
|
|
for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling)
|
|
scalar(kid);
|
|
break;
|
|
case OP_SPLIT:
|
|
if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) {
|
|
if (!kPMOP->op_pmreplroot)
|
|
deprecate("implicit split to @_");
|
|
}
|
|
/* FALL THROUGH */
|
|
case OP_MATCH:
|
|
case OP_QR:
|
|
case OP_SUBST:
|
|
case OP_NULL:
|
|
default:
|
|
if (o->op_flags & OPf_KIDS) {
|
|
for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling)
|
|
scalar(kid);
|
|
}
|
|
break;
|
|
case OP_LEAVE:
|
|
case OP_LEAVETRY:
|
|
kid = cLISTOPo->op_first;
|
|
scalar(kid);
|
|
while ((kid = kid->op_sibling)) {
|
|
if (kid->op_sibling)
|
|
scalarvoid(kid);
|
|
else
|
|
scalar(kid);
|
|
}
|
|
WITH_THR(PL_curcop = &PL_compiling);
|
|
break;
|
|
case OP_SCOPE:
|
|
case OP_LINESEQ:
|
|
case OP_LIST:
|
|
for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) {
|
|
if (kid->op_sibling)
|
|
scalarvoid(kid);
|
|
else
|
|
scalar(kid);
|
|
}
|
|
WITH_THR(PL_curcop = &PL_compiling);
|
|
break;
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_scalarvoid(pTHX_ OP *o)
|
|
{
|
|
OP *kid;
|
|
char* useless = 0;
|
|
SV* sv;
|
|
U8 want;
|
|
|
|
if (o->op_type == OP_NEXTSTATE
|
|
|| o->op_type == OP_SETSTATE
|
|
|| o->op_type == OP_DBSTATE
|
|
|| (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE
|
|
|| o->op_targ == OP_SETSTATE
|
|
|| o->op_targ == OP_DBSTATE)))
|
|
{
|
|
dTHR;
|
|
PL_curcop = (COP*)o; /* for warning below */
|
|
}
|
|
|
|
/* assumes no premature commitment */
|
|
want = o->op_flags & OPf_WANT;
|
|
if ((want && want != OPf_WANT_SCALAR) || PL_error_count
|
|
|| o->op_type == OP_RETURN)
|
|
{
|
|
return o;
|
|
}
|
|
|
|
if ((o->op_private & OPpTARGET_MY)
|
|
&& (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */
|
|
{
|
|
return scalar(o); /* As if inside SASSIGN */
|
|
}
|
|
|
|
o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID;
|
|
|
|
switch (o->op_type) {
|
|
default:
|
|
if (!(PL_opargs[o->op_type] & OA_FOLDCONST))
|
|
break;
|
|
/* FALL THROUGH */
|
|
case OP_REPEAT:
|
|
if (o->op_flags & OPf_STACKED)
|
|
break;
|
|
goto func_ops;
|
|
case OP_SUBSTR:
|
|
if (o->op_private == 4)
|
|
break;
|
|
/* FALL THROUGH */
|
|
case OP_GVSV:
|
|
case OP_WANTARRAY:
|
|
case OP_GV:
|
|
case OP_PADSV:
|
|
case OP_PADAV:
|
|
case OP_PADHV:
|
|
case OP_PADANY:
|
|
case OP_AV2ARYLEN:
|
|
case OP_REF:
|
|
case OP_REFGEN:
|
|
case OP_SREFGEN:
|
|
case OP_DEFINED:
|
|
case OP_HEX:
|
|
case OP_OCT:
|
|
case OP_LENGTH:
|
|
case OP_VEC:
|
|
case OP_INDEX:
|
|
case OP_RINDEX:
|
|
case OP_SPRINTF:
|
|
case OP_AELEM:
|
|
case OP_AELEMFAST:
|
|
case OP_ASLICE:
|
|
case OP_HELEM:
|
|
case OP_HSLICE:
|
|
case OP_UNPACK:
|
|
case OP_PACK:
|
|
case OP_JOIN:
|
|
case OP_LSLICE:
|
|
case OP_ANONLIST:
|
|
case OP_ANONHASH:
|
|
case OP_SORT:
|
|
case OP_REVERSE:
|
|
case OP_RANGE:
|
|
case OP_FLIP:
|
|
case OP_FLOP:
|
|
case OP_CALLER:
|
|
case OP_FILENO:
|
|
case OP_EOF:
|
|
case OP_TELL:
|
|
case OP_GETSOCKNAME:
|
|
case OP_GETPEERNAME:
|
|
case OP_READLINK:
|
|
case OP_TELLDIR:
|
|
case OP_GETPPID:
|
|
case OP_GETPGRP:
|
|
case OP_GETPRIORITY:
|
|
case OP_TIME:
|
|
case OP_TMS:
|
|
case OP_LOCALTIME:
|
|
case OP_GMTIME:
|
|
case OP_GHBYNAME:
|
|
case OP_GHBYADDR:
|
|
case OP_GHOSTENT:
|
|
case OP_GNBYNAME:
|
|
case OP_GNBYADDR:
|
|
case OP_GNETENT:
|
|
case OP_GPBYNAME:
|
|
case OP_GPBYNUMBER:
|
|
case OP_GPROTOENT:
|
|
case OP_GSBYNAME:
|
|
case OP_GSBYPORT:
|
|
case OP_GSERVENT:
|
|
case OP_GPWNAM:
|
|
case OP_GPWUID:
|
|
case OP_GGRNAM:
|
|
case OP_GGRGID:
|
|
case OP_GETLOGIN:
|
|
func_ops:
|
|
if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)))
|
|
useless = PL_op_desc[o->op_type];
|
|
break;
|
|
|
|
case OP_RV2GV:
|
|
case OP_RV2SV:
|
|
case OP_RV2AV:
|
|
case OP_RV2HV:
|
|
if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) &&
|
|
(!o->op_sibling || o->op_sibling->op_type != OP_READLINE))
|
|
useless = "a variable";
|
|
break;
|
|
|
|
case OP_CONST:
|
|
sv = cSVOPo_sv;
|
|
if (cSVOPo->op_private & OPpCONST_STRICT)
|
|
no_bareword_allowed(o);
|
|
else {
|
|
dTHR;
|
|
if (ckWARN(WARN_VOID)) {
|
|
useless = "a constant";
|
|
if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0))
|
|
useless = 0;
|
|
else if (SvPOK(sv)) {
|
|
if (strnEQ(SvPVX(sv), "di", 2) ||
|
|
strnEQ(SvPVX(sv), "ds", 2) ||
|
|
strnEQ(SvPVX(sv), "ig", 2))
|
|
useless = 0;
|
|
}
|
|
}
|
|
}
|
|
null(o); /* don't execute or even remember it */
|
|
break;
|
|
|
|
case OP_POSTINC:
|
|
o->op_type = OP_PREINC; /* pre-increment is faster */
|
|
o->op_ppaddr = PL_ppaddr[OP_PREINC];
|
|
break;
|
|
|
|
case OP_POSTDEC:
|
|
o->op_type = OP_PREDEC; /* pre-decrement is faster */
|
|
o->op_ppaddr = PL_ppaddr[OP_PREDEC];
|
|
break;
|
|
|
|
case OP_OR:
|
|
case OP_AND:
|
|
case OP_COND_EXPR:
|
|
for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling)
|
|
scalarvoid(kid);
|
|
break;
|
|
|
|
case OP_NULL:
|
|
if (o->op_flags & OPf_STACKED)
|
|
break;
|
|
/* FALL THROUGH */
|
|
case OP_NEXTSTATE:
|
|
case OP_DBSTATE:
|
|
case OP_ENTERTRY:
|
|
case OP_ENTER:
|
|
case OP_SCALAR:
|
|
if (!(o->op_flags & OPf_KIDS))
|
|
break;
|
|
/* FALL THROUGH */
|
|
case OP_SCOPE:
|
|
case OP_LEAVE:
|
|
case OP_LEAVETRY:
|
|
case OP_LEAVELOOP:
|
|
case OP_LINESEQ:
|
|
case OP_LIST:
|
|
for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling)
|
|
scalarvoid(kid);
|
|
break;
|
|
case OP_ENTEREVAL:
|
|
scalarkids(o);
|
|
break;
|
|
case OP_REQUIRE:
|
|
/* all requires must return a boolean value */
|
|
o->op_flags &= ~OPf_WANT;
|
|
return scalar(o);
|
|
case OP_SPLIT:
|
|
if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) {
|
|
if (!kPMOP->op_pmreplroot)
|
|
deprecate("implicit split to @_");
|
|
}
|
|
break;
|
|
}
|
|
if (useless) {
|
|
dTHR;
|
|
if (ckWARN(WARN_VOID))
|
|
Perl_warner(aTHX_ WARN_VOID, "Useless use of %s in void context", useless);
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_listkids(pTHX_ OP *o)
|
|
{
|
|
OP *kid;
|
|
if (o && o->op_flags & OPf_KIDS) {
|
|
for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling)
|
|
list(kid);
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_list(pTHX_ OP *o)
|
|
{
|
|
OP *kid;
|
|
|
|
/* assumes no premature commitment */
|
|
if (!o || (o->op_flags & OPf_WANT) || PL_error_count
|
|
|| o->op_type == OP_RETURN)
|
|
{
|
|
return o;
|
|
}
|
|
|
|
if ((o->op_private & OPpTARGET_MY)
|
|
&& (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */
|
|
{
|
|
return o; /* As if inside SASSIGN */
|
|
}
|
|
|
|
o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST;
|
|
|
|
switch (o->op_type) {
|
|
case OP_FLOP:
|
|
case OP_REPEAT:
|
|
list(cBINOPo->op_first);
|
|
break;
|
|
case OP_OR:
|
|
case OP_AND:
|
|
case OP_COND_EXPR:
|
|
for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling)
|
|
list(kid);
|
|
break;
|
|
default:
|
|
case OP_MATCH:
|
|
case OP_QR:
|
|
case OP_SUBST:
|
|
case OP_NULL:
|
|
if (!(o->op_flags & OPf_KIDS))
|
|
break;
|
|
if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) {
|
|
list(cBINOPo->op_first);
|
|
return gen_constant_list(o);
|
|
}
|
|
case OP_LIST:
|
|
listkids(o);
|
|
break;
|
|
case OP_LEAVE:
|
|
case OP_LEAVETRY:
|
|
kid = cLISTOPo->op_first;
|
|
list(kid);
|
|
while ((kid = kid->op_sibling)) {
|
|
if (kid->op_sibling)
|
|
scalarvoid(kid);
|
|
else
|
|
list(kid);
|
|
}
|
|
WITH_THR(PL_curcop = &PL_compiling);
|
|
break;
|
|
case OP_SCOPE:
|
|
case OP_LINESEQ:
|
|
for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) {
|
|
if (kid->op_sibling)
|
|
scalarvoid(kid);
|
|
else
|
|
list(kid);
|
|
}
|
|
WITH_THR(PL_curcop = &PL_compiling);
|
|
break;
|
|
case OP_REQUIRE:
|
|
/* all requires must return a boolean value */
|
|
o->op_flags &= ~OPf_WANT;
|
|
return scalar(o);
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_scalarseq(pTHX_ OP *o)
|
|
{
|
|
OP *kid;
|
|
|
|
if (o) {
|
|
if (o->op_type == OP_LINESEQ ||
|
|
o->op_type == OP_SCOPE ||
|
|
o->op_type == OP_LEAVE ||
|
|
o->op_type == OP_LEAVETRY)
|
|
{
|
|
dTHR;
|
|
for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) {
|
|
if (kid->op_sibling) {
|
|
scalarvoid(kid);
|
|
}
|
|
}
|
|
PL_curcop = &PL_compiling;
|
|
}
|
|
o->op_flags &= ~OPf_PARENS;
|
|
if (PL_hints & HINT_BLOCK_SCOPE)
|
|
o->op_flags |= OPf_PARENS;
|
|
}
|
|
else
|
|
o = newOP(OP_STUB, 0);
|
|
return o;
|
|
}
|
|
|
|
STATIC OP *
|
|
S_modkids(pTHX_ OP *o, I32 type)
|
|
{
|
|
OP *kid;
|
|
if (o && o->op_flags & OPf_KIDS) {
|
|
for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling)
|
|
mod(kid, type);
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_mod(pTHX_ OP *o, I32 type)
|
|
{
|
|
dTHR;
|
|
OP *kid;
|
|
STRLEN n_a;
|
|
|
|
if (!o || PL_error_count)
|
|
return o;
|
|
|
|
if ((o->op_private & OPpTARGET_MY)
|
|
&& (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */
|
|
{
|
|
return o;
|
|
}
|
|
|
|
switch (o->op_type) {
|
|
case OP_UNDEF:
|
|
PL_modcount++;
|
|
return o;
|
|
case OP_CONST:
|
|
if (!(o->op_private & (OPpCONST_ARYBASE)))
|
|
goto nomod;
|
|
if (PL_eval_start && PL_eval_start->op_type == OP_CONST) {
|
|
PL_compiling.cop_arybase = (I32)SvIV(cSVOPx(PL_eval_start)->op_sv);
|
|
PL_eval_start = 0;
|
|
}
|
|
else if (!type) {
|
|
SAVEI32(PL_compiling.cop_arybase);
|
|
PL_compiling.cop_arybase = 0;
|
|
}
|
|
else if (type == OP_REFGEN)
|
|
goto nomod;
|
|
else
|
|
Perl_croak(aTHX_ "That use of $[ is unsupported");
|
|
break;
|
|
case OP_STUB:
|
|
if (o->op_flags & OPf_PARENS)
|
|
break;
|
|
goto nomod;
|
|
case OP_ENTERSUB:
|
|
if ((type == OP_UNDEF || type == OP_REFGEN) &&
|
|
!(o->op_flags & OPf_STACKED)) {
|
|
o->op_type = OP_RV2CV; /* entersub => rv2cv */
|
|
o->op_ppaddr = PL_ppaddr[OP_RV2CV];
|
|
assert(cUNOPo->op_first->op_type == OP_NULL);
|
|
null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */
|
|
break;
|
|
}
|
|
else { /* lvalue subroutine call */
|
|
o->op_private |= OPpLVAL_INTRO;
|
|
if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) {
|
|
/* Backward compatibility mode: */
|
|
o->op_private |= OPpENTERSUB_INARGS;
|
|
break;
|
|
}
|
|
else { /* Compile-time error message: */
|
|
OP *kid = cUNOPo->op_first;
|
|
CV *cv;
|
|
OP *okid;
|
|
|
|
if (kid->op_type == OP_PUSHMARK)
|
|
goto skip_kids;
|
|
if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST)
|
|
Perl_croak(aTHX_
|
|
"panic: unexpected lvalue entersub "
|
|
"args: type/targ %ld:%ld",
|
|
(long)kid->op_type,kid->op_targ);
|
|
kid = kLISTOP->op_first;
|
|
skip_kids:
|
|
while (kid->op_sibling)
|
|
kid = kid->op_sibling;
|
|
if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) {
|
|
/* Indirect call */
|
|
if (kid->op_type == OP_METHOD_NAMED
|
|
|| kid->op_type == OP_METHOD)
|
|
{
|
|
UNOP *newop;
|
|
|
|
if (kid->op_sibling || kid->op_next != kid) {
|
|
yyerror("panic: unexpected optree near method call");
|
|
break;
|
|
}
|
|
|
|
NewOp(1101, newop, 1, UNOP);
|
|
newop->op_type = OP_RV2CV;
|
|
newop->op_ppaddr = PL_ppaddr[OP_RV2CV];
|
|
newop->op_first = Nullop;
|
|
newop->op_next = (OP*)newop;
|
|
kid->op_sibling = (OP*)newop;
|
|
newop->op_private |= OPpLVAL_INTRO;
|
|
break;
|
|
}
|
|
|
|
if (kid->op_type != OP_RV2CV)
|
|
Perl_croak(aTHX_
|
|
"panic: unexpected lvalue entersub "
|
|
"entry via type/targ %ld:%ld",
|
|
(long)kid->op_type,kid->op_targ);
|
|
kid->op_private |= OPpLVAL_INTRO;
|
|
break; /* Postpone until runtime */
|
|
}
|
|
|
|
okid = kid;
|
|
kid = kUNOP->op_first;
|
|
if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV)
|
|
kid = kUNOP->op_first;
|
|
if (kid->op_type == OP_NULL)
|
|
Perl_croak(aTHX_
|
|
"Unexpected constant lvalue entersub "
|
|
"entry via type/targ %ld:%ld",
|
|
(long)kid->op_type,kid->op_targ);
|
|
if (kid->op_type != OP_GV) {
|
|
/* Restore RV2CV to check lvalueness */
|
|
restore_2cv:
|
|
if (kid->op_next && kid->op_next != kid) { /* Happens? */
|
|
okid->op_next = kid->op_next;
|
|
kid->op_next = okid;
|
|
}
|
|
else
|
|
okid->op_next = Nullop;
|
|
okid->op_type = OP_RV2CV;
|
|
okid->op_targ = 0;
|
|
okid->op_ppaddr = PL_ppaddr[OP_RV2CV];
|
|
okid->op_private |= OPpLVAL_INTRO;
|
|
break;
|
|
}
|
|
|
|
cv = GvCV(kGVOP_gv);
|
|
if (!cv)
|
|
goto restore_2cv;
|
|
if (CvLVALUE(cv))
|
|
break;
|
|
}
|
|
}
|
|
/* FALL THROUGH */
|
|
default:
|
|
nomod:
|
|
/* grep, foreach, subcalls, refgen */
|
|
if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN)
|
|
break;
|
|
yyerror(Perl_form(aTHX_ "Can't modify %s in %s",
|
|
(o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL)
|
|
? "do block"
|
|
: (o->op_type == OP_ENTERSUB
|
|
? "non-lvalue subroutine call"
|
|
: PL_op_desc[o->op_type])),
|
|
type ? PL_op_desc[type] : "local"));
|
|
return o;
|
|
|
|
case OP_PREINC:
|
|
case OP_PREDEC:
|
|
case OP_POW:
|
|
case OP_MULTIPLY:
|
|
case OP_DIVIDE:
|
|
case OP_MODULO:
|
|
case OP_REPEAT:
|
|
case OP_ADD:
|
|
case OP_SUBTRACT:
|
|
case OP_CONCAT:
|
|
case OP_LEFT_SHIFT:
|
|
case OP_RIGHT_SHIFT:
|
|
case OP_BIT_AND:
|
|
case OP_BIT_XOR:
|
|
case OP_BIT_OR:
|
|
case OP_I_MULTIPLY:
|
|
case OP_I_DIVIDE:
|
|
case OP_I_MODULO:
|
|
case OP_I_ADD:
|
|
case OP_I_SUBTRACT:
|
|
if (!(o->op_flags & OPf_STACKED))
|
|
goto nomod;
|
|
PL_modcount++;
|
|
break;
|
|
|
|
case OP_COND_EXPR:
|
|
for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling)
|
|
mod(kid, type);
|
|
break;
|
|
|
|
case OP_RV2AV:
|
|
case OP_RV2HV:
|
|
if (!type && cUNOPo->op_first->op_type != OP_GV)
|
|
Perl_croak(aTHX_ "Can't localize through a reference");
|
|
if (type == OP_REFGEN && o->op_flags & OPf_PARENS) {
|
|
PL_modcount = 10000;
|
|
return o; /* Treat \(@foo) like ordinary list. */
|
|
}
|
|
/* FALL THROUGH */
|
|
case OP_RV2GV:
|
|
if (scalar_mod_type(o, type))
|
|
goto nomod;
|
|
ref(cUNOPo->op_first, o->op_type);
|
|
/* FALL THROUGH */
|
|
case OP_AASSIGN:
|
|
case OP_ASLICE:
|
|
case OP_HSLICE:
|
|
case OP_NEXTSTATE:
|
|
case OP_DBSTATE:
|
|
case OP_REFGEN:
|
|
case OP_CHOMP:
|
|
PL_modcount = 10000;
|
|
break;
|
|
case OP_RV2SV:
|
|
if (!type && cUNOPo->op_first->op_type != OP_GV)
|
|
Perl_croak(aTHX_ "Can't localize through a reference");
|
|
ref(cUNOPo->op_first, o->op_type);
|
|
/* FALL THROUGH */
|
|
case OP_GV:
|
|
case OP_AV2ARYLEN:
|
|
PL_hints |= HINT_BLOCK_SCOPE;
|
|
case OP_SASSIGN:
|
|
case OP_ANDASSIGN:
|
|
case OP_ORASSIGN:
|
|
case OP_AELEMFAST:
|
|
PL_modcount++;
|
|
break;
|
|
|
|
case OP_PADAV:
|
|
case OP_PADHV:
|
|
PL_modcount = 10000;
|
|
if (type == OP_REFGEN && o->op_flags & OPf_PARENS)
|
|
return o; /* Treat \(@foo) like ordinary list. */
|
|
if (scalar_mod_type(o, type))
|
|
goto nomod;
|
|
/* FALL THROUGH */
|
|
case OP_PADSV:
|
|
PL_modcount++;
|
|
if (!type)
|
|
Perl_croak(aTHX_ "Can't localize lexical variable %s",
|
|
SvPV(*av_fetch(PL_comppad_name, o->op_targ, 4), n_a));
|
|
break;
|
|
|
|
#ifdef USE_THREADS
|
|
case OP_THREADSV:
|
|
PL_modcount++; /* XXX ??? */
|
|
break;
|
|
#endif /* USE_THREADS */
|
|
|
|
case OP_PUSHMARK:
|
|
break;
|
|
|
|
case OP_KEYS:
|
|
if (type != OP_SASSIGN)
|
|
goto nomod;
|
|
goto lvalue_func;
|
|
case OP_SUBSTR:
|
|
if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */
|
|
goto nomod;
|
|
/* FALL THROUGH */
|
|
case OP_POS:
|
|
case OP_VEC:
|
|
lvalue_func:
|
|
pad_free(o->op_targ);
|
|
o->op_targ = pad_alloc(o->op_type, SVs_PADMY);
|
|
assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL);
|
|
if (o->op_flags & OPf_KIDS)
|
|
mod(cBINOPo->op_first->op_sibling, type);
|
|
break;
|
|
|
|
case OP_AELEM:
|
|
case OP_HELEM:
|
|
ref(cBINOPo->op_first, o->op_type);
|
|
if (type == OP_ENTERSUB &&
|
|
!(o->op_private & (OPpLVAL_INTRO | OPpDEREF)))
|
|
o->op_private |= OPpLVAL_DEFER;
|
|
PL_modcount++;
|
|
break;
|
|
|
|
case OP_SCOPE:
|
|
case OP_LEAVE:
|
|
case OP_ENTER:
|
|
if (o->op_flags & OPf_KIDS)
|
|
mod(cLISTOPo->op_last, type);
|
|
break;
|
|
|
|
case OP_NULL:
|
|
if (o->op_flags & OPf_SPECIAL) /* do BLOCK */
|
|
goto nomod;
|
|
else if (!(o->op_flags & OPf_KIDS))
|
|
break;
|
|
if (o->op_targ != OP_LIST) {
|
|
mod(cBINOPo->op_first, type);
|
|
break;
|
|
}
|
|
/* FALL THROUGH */
|
|
case OP_LIST:
|
|
for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling)
|
|
mod(kid, type);
|
|
break;
|
|
}
|
|
o->op_flags |= OPf_MOD;
|
|
|
|
if (type == OP_AASSIGN || type == OP_SASSIGN)
|
|
o->op_flags |= OPf_SPECIAL|OPf_REF;
|
|
else if (!type) {
|
|
o->op_private |= OPpLVAL_INTRO;
|
|
o->op_flags &= ~OPf_SPECIAL;
|
|
PL_hints |= HINT_BLOCK_SCOPE;
|
|
}
|
|
else if (type != OP_GREPSTART && type != OP_ENTERSUB)
|
|
o->op_flags |= OPf_REF;
|
|
return o;
|
|
}
|
|
|
|
STATIC bool
|
|
S_scalar_mod_type(pTHX_ OP *o, I32 type)
|
|
{
|
|
switch (type) {
|
|
case OP_SASSIGN:
|
|
if (o->op_type == OP_RV2GV)
|
|
return FALSE;
|
|
/* FALL THROUGH */
|
|
case OP_PREINC:
|
|
case OP_PREDEC:
|
|
case OP_POSTINC:
|
|
case OP_POSTDEC:
|
|
case OP_I_PREINC:
|
|
case OP_I_PREDEC:
|
|
case OP_I_POSTINC:
|
|
case OP_I_POSTDEC:
|
|
case OP_POW:
|
|
case OP_MULTIPLY:
|
|
case OP_DIVIDE:
|
|
case OP_MODULO:
|
|
case OP_REPEAT:
|
|
case OP_ADD:
|
|
case OP_SUBTRACT:
|
|
case OP_I_MULTIPLY:
|
|
case OP_I_DIVIDE:
|
|
case OP_I_MODULO:
|
|
case OP_I_ADD:
|
|
case OP_I_SUBTRACT:
|
|
case OP_LEFT_SHIFT:
|
|
case OP_RIGHT_SHIFT:
|
|
case OP_BIT_AND:
|
|
case OP_BIT_XOR:
|
|
case OP_BIT_OR:
|
|
case OP_CONCAT:
|
|
case OP_SUBST:
|
|
case OP_TRANS:
|
|
case OP_READ:
|
|
case OP_SYSREAD:
|
|
case OP_RECV:
|
|
case OP_ANDASSIGN:
|
|
case OP_ORASSIGN:
|
|
return TRUE;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
STATIC bool
|
|
S_is_handle_constructor(pTHX_ OP *o, I32 argnum)
|
|
{
|
|
switch (o->op_type) {
|
|
case OP_PIPE_OP:
|
|
case OP_SOCKPAIR:
|
|
if (argnum == 2)
|
|
return TRUE;
|
|
/* FALL THROUGH */
|
|
case OP_SYSOPEN:
|
|
case OP_OPEN:
|
|
case OP_SELECT: /* XXX c.f. SelectSaver.pm */
|
|
case OP_SOCKET:
|
|
case OP_OPEN_DIR:
|
|
case OP_ACCEPT:
|
|
if (argnum == 1)
|
|
return TRUE;
|
|
/* FALL THROUGH */
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
OP *
|
|
Perl_refkids(pTHX_ OP *o, I32 type)
|
|
{
|
|
OP *kid;
|
|
if (o && o->op_flags & OPf_KIDS) {
|
|
for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling)
|
|
ref(kid, type);
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ref(pTHX_ OP *o, I32 type)
|
|
{
|
|
OP *kid;
|
|
|
|
if (!o || PL_error_count)
|
|
return o;
|
|
|
|
switch (o->op_type) {
|
|
case OP_ENTERSUB:
|
|
if ((type == OP_EXISTS || type == OP_DEFINED || type == OP_LOCK) &&
|
|
!(o->op_flags & OPf_STACKED)) {
|
|
o->op_type = OP_RV2CV; /* entersub => rv2cv */
|
|
o->op_ppaddr = PL_ppaddr[OP_RV2CV];
|
|
assert(cUNOPo->op_first->op_type == OP_NULL);
|
|
null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */
|
|
o->op_flags |= OPf_SPECIAL;
|
|
}
|
|
break;
|
|
|
|
case OP_COND_EXPR:
|
|
for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling)
|
|
ref(kid, type);
|
|
break;
|
|
case OP_RV2SV:
|
|
if (type == OP_DEFINED)
|
|
o->op_flags |= OPf_SPECIAL; /* don't create GV */
|
|
ref(cUNOPo->op_first, o->op_type);
|
|
/* FALL THROUGH */
|
|
case OP_PADSV:
|
|
if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) {
|
|
o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV
|
|
: type == OP_RV2HV ? OPpDEREF_HV
|
|
: OPpDEREF_SV);
|
|
o->op_flags |= OPf_MOD;
|
|
}
|
|
break;
|
|
|
|
case OP_THREADSV:
|
|
o->op_flags |= OPf_MOD; /* XXX ??? */
|
|
break;
|
|
|
|
case OP_RV2AV:
|
|
case OP_RV2HV:
|
|
o->op_flags |= OPf_REF;
|
|
/* FALL THROUGH */
|
|
case OP_RV2GV:
|
|
if (type == OP_DEFINED)
|
|
o->op_flags |= OPf_SPECIAL; /* don't create GV */
|
|
ref(cUNOPo->op_first, o->op_type);
|
|
break;
|
|
|
|
case OP_PADAV:
|
|
case OP_PADHV:
|
|
o->op_flags |= OPf_REF;
|
|
break;
|
|
|
|
case OP_SCALAR:
|
|
case OP_NULL:
|
|
if (!(o->op_flags & OPf_KIDS))
|
|
break;
|
|
ref(cBINOPo->op_first, type);
|
|
break;
|
|
case OP_AELEM:
|
|
case OP_HELEM:
|
|
ref(cBINOPo->op_first, o->op_type);
|
|
if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) {
|
|
o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV
|
|
: type == OP_RV2HV ? OPpDEREF_HV
|
|
: OPpDEREF_SV);
|
|
o->op_flags |= OPf_MOD;
|
|
}
|
|
break;
|
|
|
|
case OP_SCOPE:
|
|
case OP_LEAVE:
|
|
case OP_ENTER:
|
|
case OP_LIST:
|
|
if (!(o->op_flags & OPf_KIDS))
|
|
break;
|
|
ref(cLISTOPo->op_last, type);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return scalar(o);
|
|
|
|
}
|
|
|
|
STATIC OP *
|
|
S_dup_attrlist(pTHX_ OP *o)
|
|
{
|
|
OP *rop = Nullop;
|
|
|
|
/* An attrlist is either a simple OP_CONST or an OP_LIST with kids,
|
|
* where the first kid is OP_PUSHMARK and the remaining ones
|
|
* are OP_CONST. We need to push the OP_CONST values.
|
|
*/
|
|
if (o->op_type == OP_CONST)
|
|
rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc(cSVOPo->op_sv));
|
|
else {
|
|
assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS));
|
|
for (o = cLISTOPo->op_first; o; o=o->op_sibling) {
|
|
if (o->op_type == OP_CONST)
|
|
rop = append_elem(OP_LIST, rop,
|
|
newSVOP(OP_CONST, o->op_flags,
|
|
SvREFCNT_inc(cSVOPo->op_sv)));
|
|
}
|
|
}
|
|
return rop;
|
|
}
|
|
|
|
STATIC void
|
|
S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs)
|
|
{
|
|
SV *stashsv;
|
|
|
|
/* fake up C<use attributes $pkg,$rv,@attrs> */
|
|
ENTER; /* need to protect against side-effects of 'use' */
|
|
SAVEINT(PL_expect);
|
|
if (stash && HvNAME(stash))
|
|
stashsv = newSVpv(HvNAME(stash), 0);
|
|
else
|
|
stashsv = &PL_sv_no;
|
|
|
|
#define ATTRSMODULE "attributes"
|
|
|
|
Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS,
|
|
newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1),
|
|
Nullsv,
|
|
prepend_elem(OP_LIST,
|
|
newSVOP(OP_CONST, 0, stashsv),
|
|
prepend_elem(OP_LIST,
|
|
newSVOP(OP_CONST, 0,
|
|
newRV(target)),
|
|
dup_attrlist(attrs))));
|
|
LEAVE;
|
|
}
|
|
|
|
STATIC OP *
|
|
S_my_kid(pTHX_ OP *o, OP *attrs)
|
|
{
|
|
OP *kid;
|
|
I32 type;
|
|
|
|
if (!o || PL_error_count)
|
|
return o;
|
|
|
|
type = o->op_type;
|
|
if (type == OP_LIST) {
|
|
for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling)
|
|
my_kid(kid, attrs);
|
|
} else if (type == OP_UNDEF) {
|
|
return o;
|
|
} else if (type == OP_RV2SV || /* "our" declaration */
|
|
type == OP_RV2AV ||
|
|
type == OP_RV2HV) { /* XXX does this let anything illegal in? */
|
|
o->op_private |= OPpOUR_INTRO;
|
|
return o;
|
|
} else if (type != OP_PADSV &&
|
|
type != OP_PADAV &&
|
|
type != OP_PADHV &&
|
|
type != OP_PUSHMARK)
|
|
{
|
|
yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"",
|
|
PL_op_desc[o->op_type],
|
|
PL_in_my == KEY_our ? "our" : "my"));
|
|
return o;
|
|
}
|
|
else if (attrs && type != OP_PUSHMARK) {
|
|
HV *stash;
|
|
SV *padsv;
|
|
SV **namesvp;
|
|
|
|
PL_in_my = FALSE;
|
|
PL_in_my_stash = Nullhv;
|
|
|
|
/* check for C<my Dog $spot> when deciding package */
|
|
namesvp = av_fetch(PL_comppad_name, o->op_targ, FALSE);
|
|
if (namesvp && *namesvp && SvOBJECT(*namesvp) && HvNAME(SvSTASH(*namesvp)))
|
|
stash = SvSTASH(*namesvp);
|
|
else
|
|
stash = PL_curstash;
|
|
padsv = PAD_SV(o->op_targ);
|
|
apply_attrs(stash, padsv, attrs);
|
|
}
|
|
o->op_flags |= OPf_MOD;
|
|
o->op_private |= OPpLVAL_INTRO;
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_my_attrs(pTHX_ OP *o, OP *attrs)
|
|
{
|
|
if (o->op_flags & OPf_PARENS)
|
|
list(o);
|
|
if (attrs)
|
|
SAVEFREEOP(attrs);
|
|
o = my_kid(o, attrs);
|
|
PL_in_my = FALSE;
|
|
PL_in_my_stash = Nullhv;
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_my(pTHX_ OP *o)
|
|
{
|
|
return my_kid(o, Nullop);
|
|
}
|
|
|
|
OP *
|
|
Perl_sawparens(pTHX_ OP *o)
|
|
{
|
|
if (o)
|
|
o->op_flags |= OPf_PARENS;
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_bind_match(pTHX_ I32 type, OP *left, OP *right)
|
|
{
|
|
dTHR;
|
|
OP *o;
|
|
|
|
if (ckWARN(WARN_MISC) &&
|
|
(left->op_type == OP_RV2AV ||
|
|
left->op_type == OP_RV2HV ||
|
|
left->op_type == OP_PADAV ||
|
|
left->op_type == OP_PADHV)) {
|
|
char *desc = PL_op_desc[(right->op_type == OP_SUBST ||
|
|
right->op_type == OP_TRANS)
|
|
? right->op_type : OP_MATCH];
|
|
const char *sample = ((left->op_type == OP_RV2AV ||
|
|
left->op_type == OP_PADAV)
|
|
? "@array" : "%hash");
|
|
Perl_warner(aTHX_ WARN_MISC,
|
|
"Applying %s to %s will act on scalar(%s)",
|
|
desc, sample, sample);
|
|
}
|
|
|
|
if (right->op_type == OP_MATCH ||
|
|
right->op_type == OP_SUBST ||
|
|
right->op_type == OP_TRANS) {
|
|
right->op_flags |= OPf_STACKED;
|
|
if (right->op_type != OP_MATCH)
|
|
left = mod(left, right->op_type);
|
|
if (right->op_type == OP_TRANS)
|
|
o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right);
|
|
else
|
|
o = prepend_elem(right->op_type, scalar(left), right);
|
|
if (type == OP_NOT)
|
|
return newUNOP(OP_NOT, 0, scalar(o));
|
|
return o;
|
|
}
|
|
else
|
|
return bind_match(type, left,
|
|
pmruntime(newPMOP(OP_MATCH, 0), right, Nullop));
|
|
}
|
|
|
|
OP *
|
|
Perl_invert(pTHX_ OP *o)
|
|
{
|
|
if (!o)
|
|
return o;
|
|
/* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */
|
|
return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o));
|
|
}
|
|
|
|
OP *
|
|
Perl_scope(pTHX_ OP *o)
|
|
{
|
|
if (o) {
|
|
if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) {
|
|
o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o);
|
|
o->op_type = OP_LEAVE;
|
|
o->op_ppaddr = PL_ppaddr[OP_LEAVE];
|
|
}
|
|
else {
|
|
if (o->op_type == OP_LINESEQ) {
|
|
OP *kid;
|
|
o->op_type = OP_SCOPE;
|
|
o->op_ppaddr = PL_ppaddr[OP_SCOPE];
|
|
kid = ((LISTOP*)o)->op_first;
|
|
if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE)
|
|
null(kid);
|
|
}
|
|
else
|
|
o = newLISTOP(OP_SCOPE, 0, o, Nullop);
|
|
}
|
|
}
|
|
return o;
|
|
}
|
|
|
|
void
|
|
Perl_save_hints(pTHX)
|
|
{
|
|
SAVEI32(PL_hints);
|
|
SAVESPTR(GvHV(PL_hintgv));
|
|
GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv));
|
|
SAVEFREESV(GvHV(PL_hintgv));
|
|
}
|
|
|
|
int
|
|
Perl_block_start(pTHX_ int full)
|
|
{
|
|
dTHR;
|
|
int retval = PL_savestack_ix;
|
|
|
|
SAVEI32(PL_comppad_name_floor);
|
|
PL_comppad_name_floor = AvFILLp(PL_comppad_name);
|
|
if (full)
|
|
PL_comppad_name_fill = PL_comppad_name_floor;
|
|
if (PL_comppad_name_floor < 0)
|
|
PL_comppad_name_floor = 0;
|
|
SAVEI32(PL_min_intro_pending);
|
|
SAVEI32(PL_max_intro_pending);
|
|
PL_min_intro_pending = 0;
|
|
SAVEI32(PL_comppad_name_fill);
|
|
SAVEI32(PL_padix_floor);
|
|
PL_padix_floor = PL_padix;
|
|
PL_pad_reset_pending = FALSE;
|
|
SAVEHINTS();
|
|
PL_hints &= ~HINT_BLOCK_SCOPE;
|
|
SAVESPTR(PL_compiling.cop_warnings);
|
|
if (! specialWARN(PL_compiling.cop_warnings)) {
|
|
PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ;
|
|
SAVEFREESV(PL_compiling.cop_warnings) ;
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
OP*
|
|
Perl_block_end(pTHX_ I32 floor, OP *seq)
|
|
{
|
|
dTHR;
|
|
int needblockscope = PL_hints & HINT_BLOCK_SCOPE;
|
|
OP* retval = scalarseq(seq);
|
|
LEAVE_SCOPE(floor);
|
|
PL_pad_reset_pending = FALSE;
|
|
PL_compiling.op_private = PL_hints;
|
|
if (needblockscope)
|
|
PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */
|
|
pad_leavemy(PL_comppad_name_fill);
|
|
PL_cop_seqmax++;
|
|
return retval;
|
|
}
|
|
|
|
STATIC OP *
|
|
S_newDEFSVOP(pTHX)
|
|
{
|
|
#ifdef USE_THREADS
|
|
OP *o = newOP(OP_THREADSV, 0);
|
|
o->op_targ = find_threadsv("_");
|
|
return o;
|
|
#else
|
|
return newSVREF(newGVOP(OP_GV, 0, PL_defgv));
|
|
#endif /* USE_THREADS */
|
|
}
|
|
|
|
void
|
|
Perl_newPROG(pTHX_ OP *o)
|
|
{
|
|
dTHR;
|
|
if (PL_in_eval) {
|
|
if (PL_eval_root)
|
|
return;
|
|
PL_eval_root = newUNOP(OP_LEAVEEVAL,
|
|
((PL_in_eval & EVAL_KEEPERR)
|
|
? OPf_SPECIAL : 0), o);
|
|
PL_eval_start = linklist(PL_eval_root);
|
|
PL_eval_root->op_private |= OPpREFCOUNTED;
|
|
OpREFCNT_set(PL_eval_root, 1);
|
|
PL_eval_root->op_next = 0;
|
|
peep(PL_eval_start);
|
|
}
|
|
else {
|
|
if (!o)
|
|
return;
|
|
PL_main_root = scope(sawparens(scalarvoid(o)));
|
|
PL_curcop = &PL_compiling;
|
|
PL_main_start = LINKLIST(PL_main_root);
|
|
PL_main_root->op_private |= OPpREFCOUNTED;
|
|
OpREFCNT_set(PL_main_root, 1);
|
|
PL_main_root->op_next = 0;
|
|
peep(PL_main_start);
|
|
PL_compcv = 0;
|
|
|
|
/* Register with debugger */
|
|
if (PERLDB_INTER) {
|
|
CV *cv = get_cv("DB::postponed", FALSE);
|
|
if (cv) {
|
|
dSP;
|
|
PUSHMARK(SP);
|
|
XPUSHs((SV*)CopFILEGV(&PL_compiling));
|
|
PUTBACK;
|
|
call_sv((SV*)cv, G_DISCARD);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
OP *
|
|
Perl_localize(pTHX_ OP *o, I32 lex)
|
|
{
|
|
if (o->op_flags & OPf_PARENS)
|
|
list(o);
|
|
else {
|
|
dTHR;
|
|
if (ckWARN(WARN_PARENTHESIS) && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') {
|
|
char *s;
|
|
for (s = PL_bufptr; *s && (isALNUM(*s) || (*s & 0x80) || strchr("@$%, ",*s)); s++) ;
|
|
if (*s == ';' || *s == '=')
|
|
Perl_warner(aTHX_ WARN_PARENTHESIS,
|
|
"Parentheses missing around \"%s\" list",
|
|
lex ? (PL_in_my == KEY_our ? "our" : "my") : "local");
|
|
}
|
|
}
|
|
if (lex)
|
|
o = my(o);
|
|
else
|
|
o = mod(o, OP_NULL); /* a bit kludgey */
|
|
PL_in_my = FALSE;
|
|
PL_in_my_stash = Nullhv;
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_jmaybe(pTHX_ OP *o)
|
|
{
|
|
if (o->op_type == OP_LIST) {
|
|
OP *o2;
|
|
#ifdef USE_THREADS
|
|
o2 = newOP(OP_THREADSV, 0);
|
|
o2->op_targ = find_threadsv(";");
|
|
#else
|
|
o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))),
|
|
#endif /* USE_THREADS */
|
|
o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o));
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_fold_constants(pTHX_ register OP *o)
|
|
{
|
|
dTHR;
|
|
register OP *curop;
|
|
I32 type = o->op_type;
|
|
SV *sv;
|
|
|
|
if (PL_opargs[type] & OA_RETSCALAR)
|
|
scalar(o);
|
|
if (PL_opargs[type] & OA_TARGET && !o->op_targ)
|
|
o->op_targ = pad_alloc(type, SVs_PADTMP);
|
|
|
|
/* integerize op, unless it happens to be C<-foo>.
|
|
* XXX should pp_i_negate() do magic string negation instead? */
|
|
if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER)
|
|
&& !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST
|
|
&& (cUNOPo->op_first->op_private & OPpCONST_BARE)))
|
|
{
|
|
o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)];
|
|
}
|
|
|
|
if (!(PL_opargs[type] & OA_FOLDCONST))
|
|
goto nope;
|
|
|
|
switch (type) {
|
|
case OP_NEGATE:
|
|
/* XXX might want a ck_negate() for this */
|
|
cUNOPo->op_first->op_private &= ~OPpCONST_STRICT;
|
|
break;
|
|
case OP_SPRINTF:
|
|
case OP_UCFIRST:
|
|
case OP_LCFIRST:
|
|
case OP_UC:
|
|
case OP_LC:
|
|
case OP_SLT:
|
|
case OP_SGT:
|
|
case OP_SLE:
|
|
case OP_SGE:
|
|
case OP_SCMP:
|
|
|
|
if (o->op_private & OPpLOCALE)
|
|
goto nope;
|
|
}
|
|
|
|
if (PL_error_count)
|
|
goto nope; /* Don't try to run w/ errors */
|
|
|
|
for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) {
|
|
if ((curop->op_type != OP_CONST ||
|
|
(curop->op_private & OPpCONST_BARE)) &&
|
|
curop->op_type != OP_LIST &&
|
|
curop->op_type != OP_SCALAR &&
|
|
curop->op_type != OP_NULL &&
|
|
curop->op_type != OP_PUSHMARK)
|
|
{
|
|
goto nope;
|
|
}
|
|
}
|
|
|
|
curop = LINKLIST(o);
|
|
o->op_next = 0;
|
|
PL_op = curop;
|
|
CALLRUNOPS(aTHX);
|
|
sv = *(PL_stack_sp--);
|
|
if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */
|
|
pad_swipe(o->op_targ);
|
|
else if (SvTEMP(sv)) { /* grab mortal temp? */
|
|
(void)SvREFCNT_inc(sv);
|
|
SvTEMP_off(sv);
|
|
}
|
|
op_free(o);
|
|
if (type == OP_RV2GV)
|
|
return newGVOP(OP_GV, 0, (GV*)sv);
|
|
else {
|
|
/* try to smush double to int, but don't smush -2.0 to -2 */
|
|
if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK &&
|
|
type != OP_NEGATE)
|
|
{
|
|
IV iv = SvIV(sv);
|
|
if ((NV)iv == SvNV(sv)) {
|
|
SvREFCNT_dec(sv);
|
|
sv = newSViv(iv);
|
|
}
|
|
else
|
|
SvIOK_off(sv); /* undo SvIV() damage */
|
|
}
|
|
return newSVOP(OP_CONST, 0, sv);
|
|
}
|
|
|
|
nope:
|
|
if (!(PL_opargs[type] & OA_OTHERINT))
|
|
return o;
|
|
|
|
if (!(PL_hints & HINT_INTEGER)) {
|
|
if (type == OP_MODULO
|
|
|| type == OP_DIVIDE
|
|
|| !(o->op_flags & OPf_KIDS))
|
|
{
|
|
return o;
|
|
}
|
|
|
|
for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) {
|
|
if (curop->op_type == OP_CONST) {
|
|
if (SvIOK(((SVOP*)curop)->op_sv))
|
|
continue;
|
|
return o;
|
|
}
|
|
if (PL_opargs[curop->op_type] & OA_RETINTEGER)
|
|
continue;
|
|
return o;
|
|
}
|
|
o->op_ppaddr = PL_ppaddr[++(o->op_type)];
|
|
}
|
|
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_gen_constant_list(pTHX_ register OP *o)
|
|
{
|
|
dTHR;
|
|
register OP *curop;
|
|
I32 oldtmps_floor = PL_tmps_floor;
|
|
|
|
list(o);
|
|
if (PL_error_count)
|
|
return o; /* Don't attempt to run with errors */
|
|
|
|
PL_op = curop = LINKLIST(o);
|
|
o->op_next = 0;
|
|
peep(curop);
|
|
pp_pushmark();
|
|
CALLRUNOPS(aTHX);
|
|
PL_op = curop;
|
|
pp_anonlist();
|
|
PL_tmps_floor = oldtmps_floor;
|
|
|
|
o->op_type = OP_RV2AV;
|
|
o->op_ppaddr = PL_ppaddr[OP_RV2AV];
|
|
curop = ((UNOP*)o)->op_first;
|
|
((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--));
|
|
op_free(curop);
|
|
linklist(o);
|
|
return list(o);
|
|
}
|
|
|
|
OP *
|
|
Perl_convert(pTHX_ I32 type, I32 flags, OP *o)
|
|
{
|
|
OP *kid;
|
|
OP *last = 0;
|
|
|
|
if (!o || o->op_type != OP_LIST)
|
|
o = newLISTOP(OP_LIST, 0, o, Nullop);
|
|
else
|
|
o->op_flags &= ~OPf_WANT;
|
|
|
|
if (!(PL_opargs[type] & OA_MARK))
|
|
null(cLISTOPo->op_first);
|
|
|
|
o->op_type = type;
|
|
o->op_ppaddr = PL_ppaddr[type];
|
|
o->op_flags |= flags;
|
|
|
|
o = CHECKOP(type, o);
|
|
if (o->op_type != type)
|
|
return o;
|
|
|
|
if (cLISTOPo->op_children < 7) {
|
|
/* XXX do we really need to do this if we're done appending?? */
|
|
for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling)
|
|
last = kid;
|
|
cLISTOPo->op_last = last; /* in case check substituted last arg */
|
|
}
|
|
|
|
return fold_constants(o);
|
|
}
|
|
|
|
/* List constructors */
|
|
|
|
OP *
|
|
Perl_append_elem(pTHX_ I32 type, OP *first, OP *last)
|
|
{
|
|
if (!first)
|
|
return last;
|
|
|
|
if (!last)
|
|
return first;
|
|
|
|
if (first->op_type != type
|
|
|| (type == OP_LIST && (first->op_flags & OPf_PARENS)))
|
|
{
|
|
return newLISTOP(type, 0, first, last);
|
|
}
|
|
|
|
if (first->op_flags & OPf_KIDS)
|
|
((LISTOP*)first)->op_last->op_sibling = last;
|
|
else {
|
|
first->op_flags |= OPf_KIDS;
|
|
((LISTOP*)first)->op_first = last;
|
|
}
|
|
((LISTOP*)first)->op_last = last;
|
|
((LISTOP*)first)->op_children++;
|
|
return first;
|
|
}
|
|
|
|
OP *
|
|
Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last)
|
|
{
|
|
if (!first)
|
|
return (OP*)last;
|
|
|
|
if (!last)
|
|
return (OP*)first;
|
|
|
|
if (first->op_type != type)
|
|
return prepend_elem(type, (OP*)first, (OP*)last);
|
|
|
|
if (last->op_type != type)
|
|
return append_elem(type, (OP*)first, (OP*)last);
|
|
|
|
first->op_last->op_sibling = last->op_first;
|
|
first->op_last = last->op_last;
|
|
first->op_children += last->op_children;
|
|
if (first->op_children)
|
|
first->op_flags |= OPf_KIDS;
|
|
|
|
#ifdef PL_OP_SLAB_ALLOC
|
|
#else
|
|
Safefree(last);
|
|
#endif
|
|
return (OP*)first;
|
|
}
|
|
|
|
OP *
|
|
Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last)
|
|
{
|
|
if (!first)
|
|
return last;
|
|
|
|
if (!last)
|
|
return first;
|
|
|
|
if (last->op_type == type) {
|
|
if (type == OP_LIST) { /* already a PUSHMARK there */
|
|
first->op_sibling = ((LISTOP*)last)->op_first->op_sibling;
|
|
((LISTOP*)last)->op_first->op_sibling = first;
|
|
}
|
|
else {
|
|
if (!(last->op_flags & OPf_KIDS)) {
|
|
((LISTOP*)last)->op_last = first;
|
|
last->op_flags |= OPf_KIDS;
|
|
}
|
|
first->op_sibling = ((LISTOP*)last)->op_first;
|
|
((LISTOP*)last)->op_first = first;
|
|
}
|
|
((LISTOP*)last)->op_children++;
|
|
return last;
|
|
}
|
|
|
|
return newLISTOP(type, 0, first, last);
|
|
}
|
|
|
|
/* Constructors */
|
|
|
|
OP *
|
|
Perl_newNULLLIST(pTHX)
|
|
{
|
|
return newOP(OP_STUB, 0);
|
|
}
|
|
|
|
OP *
|
|
Perl_force_list(pTHX_ OP *o)
|
|
{
|
|
if (!o || o->op_type != OP_LIST)
|
|
o = newLISTOP(OP_LIST, 0, o, Nullop);
|
|
null(o);
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last)
|
|
{
|
|
LISTOP *listop;
|
|
|
|
NewOp(1101, listop, 1, LISTOP);
|
|
|
|
listop->op_type = type;
|
|
listop->op_ppaddr = PL_ppaddr[type];
|
|
listop->op_children = (first != 0) + (last != 0);
|
|
listop->op_flags = flags;
|
|
|
|
if (!last && first)
|
|
last = first;
|
|
else if (!first && last)
|
|
first = last;
|
|
else if (first)
|
|
first->op_sibling = last;
|
|
listop->op_first = first;
|
|
listop->op_last = last;
|
|
if (type == OP_LIST) {
|
|
OP* pushop;
|
|
pushop = newOP(OP_PUSHMARK, 0);
|
|
pushop->op_sibling = first;
|
|
listop->op_first = pushop;
|
|
listop->op_flags |= OPf_KIDS;
|
|
if (!last)
|
|
listop->op_last = pushop;
|
|
}
|
|
else if (listop->op_children)
|
|
listop->op_flags |= OPf_KIDS;
|
|
|
|
return (OP*)listop;
|
|
}
|
|
|
|
OP *
|
|
Perl_newOP(pTHX_ I32 type, I32 flags)
|
|
{
|
|
OP *o;
|
|
NewOp(1101, o, 1, OP);
|
|
o->op_type = type;
|
|
o->op_ppaddr = PL_ppaddr[type];
|
|
o->op_flags = flags;
|
|
|
|
o->op_next = o;
|
|
o->op_private = 0 + (flags >> 8);
|
|
if (PL_opargs[type] & OA_RETSCALAR)
|
|
scalar(o);
|
|
if (PL_opargs[type] & OA_TARGET)
|
|
o->op_targ = pad_alloc(type, SVs_PADTMP);
|
|
return CHECKOP(type, o);
|
|
}
|
|
|
|
OP *
|
|
Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first)
|
|
{
|
|
UNOP *unop;
|
|
|
|
if (!first)
|
|
first = newOP(OP_STUB, 0);
|
|
if (PL_opargs[type] & OA_MARK)
|
|
first = force_list(first);
|
|
|
|
NewOp(1101, unop, 1, UNOP);
|
|
unop->op_type = type;
|
|
unop->op_ppaddr = PL_ppaddr[type];
|
|
unop->op_first = first;
|
|
unop->op_flags = flags | OPf_KIDS;
|
|
unop->op_private = 1 | (flags >> 8);
|
|
unop = (UNOP*) CHECKOP(type, unop);
|
|
if (unop->op_next)
|
|
return (OP*)unop;
|
|
|
|
return fold_constants((OP *) unop);
|
|
}
|
|
|
|
OP *
|
|
Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last)
|
|
{
|
|
BINOP *binop;
|
|
NewOp(1101, binop, 1, BINOP);
|
|
|
|
if (!first)
|
|
first = newOP(OP_NULL, 0);
|
|
|
|
binop->op_type = type;
|
|
binop->op_ppaddr = PL_ppaddr[type];
|
|
binop->op_first = first;
|
|
binop->op_flags = flags | OPf_KIDS;
|
|
if (!last) {
|
|
last = first;
|
|
binop->op_private = 1 | (flags >> 8);
|
|
}
|
|
else {
|
|
binop->op_private = 2 | (flags >> 8);
|
|
first->op_sibling = last;
|
|
}
|
|
|
|
binop = (BINOP*)CHECKOP(type, binop);
|
|
if (binop->op_next || binop->op_type != type)
|
|
return (OP*)binop;
|
|
|
|
binop->op_last = binop->op_first->op_sibling;
|
|
|
|
return fold_constants((OP *)binop);
|
|
}
|
|
|
|
static int
|
|
utf8compare(const void *a, const void *b)
|
|
{
|
|
int i;
|
|
for (i = 0; i < 10; i++) {
|
|
if ((*(U8**)a)[i] < (*(U8**)b)[i])
|
|
return -1;
|
|
if ((*(U8**)a)[i] > (*(U8**)b)[i])
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
OP *
|
|
Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl)
|
|
{
|
|
SV *tstr = ((SVOP*)expr)->op_sv;
|
|
SV *rstr = ((SVOP*)repl)->op_sv;
|
|
STRLEN tlen;
|
|
STRLEN rlen;
|
|
register U8 *t = (U8*)SvPV(tstr, tlen);
|
|
register U8 *r = (U8*)SvPV(rstr, rlen);
|
|
register I32 i;
|
|
register I32 j;
|
|
I32 del;
|
|
I32 complement;
|
|
I32 squash;
|
|
register short *tbl;
|
|
|
|
complement = o->op_private & OPpTRANS_COMPLEMENT;
|
|
del = o->op_private & OPpTRANS_DELETE;
|
|
squash = o->op_private & OPpTRANS_SQUASH;
|
|
|
|
if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) {
|
|
SV* listsv = newSVpvn("# comment\n",10);
|
|
SV* transv = 0;
|
|
U8* tend = t + tlen;
|
|
U8* rend = r + rlen;
|
|
I32 ulen;
|
|
U32 tfirst = 1;
|
|
U32 tlast = 0;
|
|
I32 tdiff;
|
|
U32 rfirst = 1;
|
|
U32 rlast = 0;
|
|
I32 rdiff;
|
|
I32 diff;
|
|
I32 none = 0;
|
|
U32 max = 0;
|
|
I32 bits;
|
|
I32 grows = 0;
|
|
I32 havefinal = 0;
|
|
U32 final;
|
|
I32 from_utf = o->op_private & OPpTRANS_FROM_UTF;
|
|
I32 to_utf = o->op_private & OPpTRANS_TO_UTF;
|
|
|
|
if (complement) {
|
|
U8 tmpbuf[UTF8_MAXLEN];
|
|
U8** cp;
|
|
UV nextmin = 0;
|
|
New(1109, cp, tlen, U8*);
|
|
i = 0;
|
|
transv = newSVpvn("",0);
|
|
while (t < tend) {
|
|
cp[i++] = t;
|
|
t += UTF8SKIP(t);
|
|
if (*t == 0xff) {
|
|
t++;
|
|
t += UTF8SKIP(t);
|
|
}
|
|
}
|
|
qsort(cp, i, sizeof(U8*), utf8compare);
|
|
for (j = 0; j < i; j++) {
|
|
U8 *s = cp[j];
|
|
UV val = utf8_to_uv(s, &ulen);
|
|
s += ulen;
|
|
diff = val - nextmin;
|
|
if (diff > 0) {
|
|
t = uv_to_utf8(tmpbuf,nextmin);
|
|
sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf);
|
|
if (diff > 1) {
|
|
t = uv_to_utf8(tmpbuf, val - 1);
|
|
sv_catpvn(transv, "\377", 1);
|
|
sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf);
|
|
}
|
|
}
|
|
if (*s == 0xff)
|
|
val = utf8_to_uv(s+1, &ulen);
|
|
if (val >= nextmin)
|
|
nextmin = val + 1;
|
|
}
|
|
t = uv_to_utf8(tmpbuf,nextmin);
|
|
sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf);
|
|
t = uv_to_utf8(tmpbuf, 0x7fffffff);
|
|
sv_catpvn(transv, "\377", 1);
|
|
sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf);
|
|
t = (U8*)SvPVX(transv);
|
|
tlen = SvCUR(transv);
|
|
tend = t + tlen;
|
|
}
|
|
else if (!rlen && !del) {
|
|
r = t; rlen = tlen; rend = tend;
|
|
}
|
|
if (!squash) {
|
|
if (to_utf && from_utf) { /* only counting characters */
|
|
if (t == r || (tlen == rlen && memEQ(t, r, tlen)))
|
|
o->op_private |= OPpTRANS_IDENTICAL;
|
|
}
|
|
else { /* straight latin-1 translation */
|
|
if (tlen == 4 && memEQ(t, "\0\377\303\277", 4) &&
|
|
rlen == 4 && memEQ(r, "\0\377\303\277", 4))
|
|
o->op_private |= OPpTRANS_IDENTICAL;
|
|
}
|
|
}
|
|
|
|
while (t < tend || tfirst <= tlast) {
|
|
/* see if we need more "t" chars */
|
|
if (tfirst > tlast) {
|
|
tfirst = (I32)utf8_to_uv(t, &ulen);
|
|
t += ulen;
|
|
if (t < tend && *t == 0xff) { /* illegal utf8 val indicates range */
|
|
tlast = (I32)utf8_to_uv(++t, &ulen);
|
|
t += ulen;
|
|
}
|
|
else
|
|
tlast = tfirst;
|
|
}
|
|
|
|
/* now see if we need more "r" chars */
|
|
if (rfirst > rlast) {
|
|
if (r < rend) {
|
|
rfirst = (I32)utf8_to_uv(r, &ulen);
|
|
r += ulen;
|
|
if (r < rend && *r == 0xff) { /* illegal utf8 val indicates range */
|
|
rlast = (I32)utf8_to_uv(++r, &ulen);
|
|
r += ulen;
|
|
}
|
|
else
|
|
rlast = rfirst;
|
|
}
|
|
else {
|
|
if (!havefinal++)
|
|
final = rlast;
|
|
rfirst = rlast = 0xffffffff;
|
|
}
|
|
}
|
|
|
|
/* now see which range will peter our first, if either. */
|
|
tdiff = tlast - tfirst;
|
|
rdiff = rlast - rfirst;
|
|
|
|
if (tdiff <= rdiff)
|
|
diff = tdiff;
|
|
else
|
|
diff = rdiff;
|
|
|
|
if (rfirst == 0xffffffff) {
|
|
diff = tdiff; /* oops, pretend rdiff is infinite */
|
|
if (diff > 0)
|
|
Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n",
|
|
(long)tfirst, (long)tlast);
|
|
else
|
|
Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst);
|
|
}
|
|
else {
|
|
if (diff > 0)
|
|
Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n",
|
|
(long)tfirst, (long)(tfirst + diff),
|
|
(long)rfirst);
|
|
else
|
|
Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n",
|
|
(long)tfirst, (long)rfirst);
|
|
|
|
if (rfirst + diff > max)
|
|
max = rfirst + diff;
|
|
rfirst += diff + 1;
|
|
if (!grows) {
|
|
if (rfirst <= 0x80)
|
|
;
|
|
else if (rfirst <= 0x800)
|
|
grows |= (tfirst < 0x80);
|
|
else if (rfirst <= 0x10000)
|
|
grows |= (tfirst < 0x800);
|
|
else if (rfirst <= 0x200000)
|
|
grows |= (tfirst < 0x10000);
|
|
else if (rfirst <= 0x4000000)
|
|
grows |= (tfirst < 0x200000);
|
|
else if (rfirst <= 0x80000000)
|
|
grows |= (tfirst < 0x4000000);
|
|
}
|
|
}
|
|
tfirst += diff + 1;
|
|
}
|
|
|
|
none = ++max;
|
|
if (del)
|
|
del = ++max;
|
|
|
|
if (max > 0xffff)
|
|
bits = 32;
|
|
else if (max > 0xff)
|
|
bits = 16;
|
|
else
|
|
bits = 8;
|
|
|
|
cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none);
|
|
SvREFCNT_dec(listsv);
|
|
if (transv)
|
|
SvREFCNT_dec(transv);
|
|
|
|
if (!del && havefinal)
|
|
(void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5,
|
|
newSVuv((UV)final), 0);
|
|
|
|
if (grows && to_utf)
|
|
o->op_private |= OPpTRANS_GROWS;
|
|
|
|
op_free(expr);
|
|
op_free(repl);
|
|
return o;
|
|
}
|
|
|
|
tbl = (short*)cPVOPo->op_pv;
|
|
if (complement) {
|
|
Zero(tbl, 256, short);
|
|
for (i = 0; i < tlen; i++)
|
|
tbl[t[i]] = -1;
|
|
for (i = 0, j = 0; i < 256; i++) {
|
|
if (!tbl[i]) {
|
|
if (j >= rlen) {
|
|
if (del)
|
|
tbl[i] = -2;
|
|
else if (rlen)
|
|
tbl[i] = r[j-1];
|
|
else
|
|
tbl[i] = i;
|
|
}
|
|
else
|
|
tbl[i] = r[j++];
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
if (!rlen && !del) {
|
|
r = t; rlen = tlen;
|
|
if (!squash)
|
|
o->op_private |= OPpTRANS_IDENTICAL;
|
|
}
|
|
for (i = 0; i < 256; i++)
|
|
tbl[i] = -1;
|
|
for (i = 0, j = 0; i < tlen; i++,j++) {
|
|
if (j >= rlen) {
|
|
if (del) {
|
|
if (tbl[t[i]] == -1)
|
|
tbl[t[i]] = -2;
|
|
continue;
|
|
}
|
|
--j;
|
|
}
|
|
if (tbl[t[i]] == -1)
|
|
tbl[t[i]] = r[j];
|
|
}
|
|
}
|
|
op_free(expr);
|
|
op_free(repl);
|
|
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_newPMOP(pTHX_ I32 type, I32 flags)
|
|
{
|
|
dTHR;
|
|
PMOP *pmop;
|
|
|
|
NewOp(1101, pmop, 1, PMOP);
|
|
pmop->op_type = type;
|
|
pmop->op_ppaddr = PL_ppaddr[type];
|
|
pmop->op_flags = flags;
|
|
pmop->op_private = 0 | (flags >> 8);
|
|
|
|
if (PL_hints & HINT_RE_TAINT)
|
|
pmop->op_pmpermflags |= PMf_RETAINT;
|
|
if (PL_hints & HINT_LOCALE)
|
|
pmop->op_pmpermflags |= PMf_LOCALE;
|
|
pmop->op_pmflags = pmop->op_pmpermflags;
|
|
|
|
/* link into pm list */
|
|
if (type != OP_TRANS && PL_curstash) {
|
|
pmop->op_pmnext = HvPMROOT(PL_curstash);
|
|
HvPMROOT(PL_curstash) = pmop;
|
|
}
|
|
|
|
return (OP*)pmop;
|
|
}
|
|
|
|
OP *
|
|
Perl_pmruntime(pTHX_ OP *o, OP *expr, OP *repl)
|
|
{
|
|
dTHR;
|
|
PMOP *pm;
|
|
LOGOP *rcop;
|
|
I32 repl_has_vars = 0;
|
|
|
|
if (o->op_type == OP_TRANS)
|
|
return pmtrans(o, expr, repl);
|
|
|
|
PL_hints |= HINT_BLOCK_SCOPE;
|
|
pm = (PMOP*)o;
|
|
|
|
if (expr->op_type == OP_CONST) {
|
|
STRLEN plen;
|
|
SV *pat = ((SVOP*)expr)->op_sv;
|
|
char *p = SvPV(pat, plen);
|
|
if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) {
|
|
sv_setpvn(pat, "\\s+", 3);
|
|
p = SvPV(pat, plen);
|
|
pm->op_pmflags |= PMf_SKIPWHITE;
|
|
}
|
|
if ((PL_hints & HINT_UTF8) || (SvUTF8(pat) && !(PL_hints & HINT_BYTE)))
|
|
pm->op_pmdynflags |= PMdf_UTF8;
|
|
pm->op_pmregexp = CALLREGCOMP(aTHX_ p, p + plen, pm);
|
|
if (strEQ("\\s+", pm->op_pmregexp->precomp))
|
|
pm->op_pmflags |= PMf_WHITE;
|
|
op_free(expr);
|
|
}
|
|
else {
|
|
if (PL_hints & HINT_UTF8)
|
|
pm->op_pmdynflags |= PMdf_UTF8;
|
|
if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL))
|
|
expr = newUNOP((!(PL_hints & HINT_RE_EVAL)
|
|
? OP_REGCRESET
|
|
: OP_REGCMAYBE),0,expr);
|
|
|
|
NewOp(1101, rcop, 1, LOGOP);
|
|
rcop->op_type = OP_REGCOMP;
|
|
rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP];
|
|
rcop->op_first = scalar(expr);
|
|
rcop->op_flags |= ((PL_hints & HINT_RE_EVAL)
|
|
? (OPf_SPECIAL | OPf_KIDS)
|
|
: OPf_KIDS);
|
|
rcop->op_private = 1;
|
|
rcop->op_other = o;
|
|
|
|
/* establish postfix order */
|
|
if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) {
|
|
LINKLIST(expr);
|
|
rcop->op_next = expr;
|
|
((UNOP*)expr)->op_first->op_next = (OP*)rcop;
|
|
}
|
|
else {
|
|
rcop->op_next = LINKLIST(expr);
|
|
expr->op_next = (OP*)rcop;
|
|
}
|
|
|
|
prepend_elem(o->op_type, scalar((OP*)rcop), o);
|
|
}
|
|
|
|
if (repl) {
|
|
OP *curop;
|
|
if (pm->op_pmflags & PMf_EVAL) {
|
|
curop = 0;
|
|
if (CopLINE(PL_curcop) < PL_multi_end)
|
|
CopLINE_set(PL_curcop, PL_multi_end);
|
|
}
|
|
#ifdef USE_THREADS
|
|
else if (repl->op_type == OP_THREADSV
|
|
&& strchr("&`'123456789+",
|
|
PL_threadsv_names[repl->op_targ]))
|
|
{
|
|
curop = 0;
|
|
}
|
|
#endif /* USE_THREADS */
|
|
else if (repl->op_type == OP_CONST)
|
|
curop = repl;
|
|
else {
|
|
OP *lastop = 0;
|
|
for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) {
|
|
if (PL_opargs[curop->op_type] & OA_DANGEROUS) {
|
|
#ifdef USE_THREADS
|
|
if (curop->op_type == OP_THREADSV) {
|
|
repl_has_vars = 1;
|
|
if (strchr("&`'123456789+", curop->op_private))
|
|
break;
|
|
}
|
|
#else
|
|
if (curop->op_type == OP_GV) {
|
|
GV *gv = cGVOPx_gv(curop);
|
|
repl_has_vars = 1;
|
|
if (strchr("&`'123456789+", *GvENAME(gv)))
|
|
break;
|
|
}
|
|
#endif /* USE_THREADS */
|
|
else if (curop->op_type == OP_RV2CV)
|
|
break;
|
|
else if (curop->op_type == OP_RV2SV ||
|
|
curop->op_type == OP_RV2AV ||
|
|
curop->op_type == OP_RV2HV ||
|
|
curop->op_type == OP_RV2GV) {
|
|
if (lastop && lastop->op_type != OP_GV) /*funny deref?*/
|
|
break;
|
|
}
|
|
else if (curop->op_type == OP_PADSV ||
|
|
curop->op_type == OP_PADAV ||
|
|
curop->op_type == OP_PADHV ||
|
|
curop->op_type == OP_PADANY) {
|
|
repl_has_vars = 1;
|
|
}
|
|
else if (curop->op_type == OP_PUSHRE)
|
|
; /* Okay here, dangerous in newASSIGNOP */
|
|
else
|
|
break;
|
|
}
|
|
lastop = curop;
|
|
}
|
|
}
|
|
if (curop == repl
|
|
&& !(repl_has_vars
|
|
&& (!pm->op_pmregexp
|
|
|| pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) {
|
|
pm->op_pmflags |= PMf_CONST; /* const for long enough */
|
|
pm->op_pmpermflags |= PMf_CONST; /* const for long enough */
|
|
prepend_elem(o->op_type, scalar(repl), o);
|
|
}
|
|
else {
|
|
if (curop == repl && !pm->op_pmregexp) { /* Has variables. */
|
|
pm->op_pmflags |= PMf_MAYBE_CONST;
|
|
pm->op_pmpermflags |= PMf_MAYBE_CONST;
|
|
}
|
|
NewOp(1101, rcop, 1, LOGOP);
|
|
rcop->op_type = OP_SUBSTCONT;
|
|
rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT];
|
|
rcop->op_first = scalar(repl);
|
|
rcop->op_flags |= OPf_KIDS;
|
|
rcop->op_private = 1;
|
|
rcop->op_other = o;
|
|
|
|
/* establish postfix order */
|
|
rcop->op_next = LINKLIST(repl);
|
|
repl->op_next = (OP*)rcop;
|
|
|
|
pm->op_pmreplroot = scalar((OP*)rcop);
|
|
pm->op_pmreplstart = LINKLIST(rcop);
|
|
rcop->op_next = 0;
|
|
}
|
|
}
|
|
|
|
return (OP*)pm;
|
|
}
|
|
|
|
OP *
|
|
Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv)
|
|
{
|
|
SVOP *svop;
|
|
NewOp(1101, svop, 1, SVOP);
|
|
svop->op_type = type;
|
|
svop->op_ppaddr = PL_ppaddr[type];
|
|
svop->op_sv = sv;
|
|
svop->op_next = (OP*)svop;
|
|
svop->op_flags = flags;
|
|
if (PL_opargs[type] & OA_RETSCALAR)
|
|
scalar((OP*)svop);
|
|
if (PL_opargs[type] & OA_TARGET)
|
|
svop->op_targ = pad_alloc(type, SVs_PADTMP);
|
|
return CHECKOP(type, svop);
|
|
}
|
|
|
|
OP *
|
|
Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv)
|
|
{
|
|
PADOP *padop;
|
|
NewOp(1101, padop, 1, PADOP);
|
|
padop->op_type = type;
|
|
padop->op_ppaddr = PL_ppaddr[type];
|
|
padop->op_padix = pad_alloc(type, SVs_PADTMP);
|
|
SvREFCNT_dec(PL_curpad[padop->op_padix]);
|
|
PL_curpad[padop->op_padix] = sv;
|
|
SvPADTMP_on(sv);
|
|
padop->op_next = (OP*)padop;
|
|
padop->op_flags = flags;
|
|
if (PL_opargs[type] & OA_RETSCALAR)
|
|
scalar((OP*)padop);
|
|
if (PL_opargs[type] & OA_TARGET)
|
|
padop->op_targ = pad_alloc(type, SVs_PADTMP);
|
|
return CHECKOP(type, padop);
|
|
}
|
|
|
|
OP *
|
|
Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv)
|
|
{
|
|
dTHR;
|
|
#ifdef USE_ITHREADS
|
|
GvIN_PAD_on(gv);
|
|
return newPADOP(type, flags, SvREFCNT_inc(gv));
|
|
#else
|
|
return newSVOP(type, flags, SvREFCNT_inc(gv));
|
|
#endif
|
|
}
|
|
|
|
OP *
|
|
Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv)
|
|
{
|
|
PVOP *pvop;
|
|
NewOp(1101, pvop, 1, PVOP);
|
|
pvop->op_type = type;
|
|
pvop->op_ppaddr = PL_ppaddr[type];
|
|
pvop->op_pv = pv;
|
|
pvop->op_next = (OP*)pvop;
|
|
pvop->op_flags = flags;
|
|
if (PL_opargs[type] & OA_RETSCALAR)
|
|
scalar((OP*)pvop);
|
|
if (PL_opargs[type] & OA_TARGET)
|
|
pvop->op_targ = pad_alloc(type, SVs_PADTMP);
|
|
return CHECKOP(type, pvop);
|
|
}
|
|
|
|
void
|
|
Perl_package(pTHX_ OP *o)
|
|
{
|
|
dTHR;
|
|
SV *sv;
|
|
|
|
save_hptr(&PL_curstash);
|
|
save_item(PL_curstname);
|
|
if (o) {
|
|
STRLEN len;
|
|
char *name;
|
|
sv = cSVOPo->op_sv;
|
|
name = SvPV(sv, len);
|
|
PL_curstash = gv_stashpvn(name,len,TRUE);
|
|
sv_setpvn(PL_curstname, name, len);
|
|
op_free(o);
|
|
}
|
|
else {
|
|
sv_setpv(PL_curstname,"<none>");
|
|
PL_curstash = Nullhv;
|
|
}
|
|
PL_hints |= HINT_BLOCK_SCOPE;
|
|
PL_copline = NOLINE;
|
|
PL_expect = XSTATE;
|
|
}
|
|
|
|
void
|
|
Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg)
|
|
{
|
|
OP *pack;
|
|
OP *rqop;
|
|
OP *imop;
|
|
OP *veop;
|
|
GV *gv;
|
|
|
|
if (id->op_type != OP_CONST)
|
|
Perl_croak(aTHX_ "Module name must be constant");
|
|
|
|
veop = Nullop;
|
|
|
|
if (version != Nullop) {
|
|
SV *vesv = ((SVOP*)version)->op_sv;
|
|
|
|
if (arg == Nullop && !SvNIOKp(vesv)) {
|
|
arg = version;
|
|
}
|
|
else {
|
|
OP *pack;
|
|
SV *meth;
|
|
|
|
if (version->op_type != OP_CONST || !SvNIOKp(vesv))
|
|
Perl_croak(aTHX_ "Version number must be constant number");
|
|
|
|
/* Make copy of id so we don't free it twice */
|
|
pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv));
|
|
|
|
/* Fake up a method call to VERSION */
|
|
meth = newSVpvn("VERSION",7);
|
|
sv_upgrade(meth, SVt_PVIV);
|
|
(void)SvIOK_on(meth);
|
|
PERL_HASH(SvUVX(meth), SvPVX(meth), SvCUR(meth));
|
|
veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL,
|
|
append_elem(OP_LIST,
|
|
prepend_elem(OP_LIST, pack, list(version)),
|
|
newSVOP(OP_METHOD_NAMED, 0, meth)));
|
|
}
|
|
}
|
|
|
|
/* Fake up an import/unimport */
|
|
if (arg && arg->op_type == OP_STUB)
|
|
imop = arg; /* no import on explicit () */
|
|
else if (SvNIOKp(((SVOP*)id)->op_sv)) {
|
|
imop = Nullop; /* use 5.0; */
|
|
}
|
|
else {
|
|
SV *meth;
|
|
|
|
/* Make copy of id so we don't free it twice */
|
|
pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv));
|
|
|
|
/* Fake up a method call to import/unimport */
|
|
meth = aver ? newSVpvn("import",6) : newSVpvn("unimport", 8);;
|
|
sv_upgrade(meth, SVt_PVIV);
|
|
(void)SvIOK_on(meth);
|
|
PERL_HASH(SvUVX(meth), SvPVX(meth), SvCUR(meth));
|
|
imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL,
|
|
append_elem(OP_LIST,
|
|
prepend_elem(OP_LIST, pack, list(arg)),
|
|
newSVOP(OP_METHOD_NAMED, 0, meth)));
|
|
}
|
|
|
|
/* Fake up a require, handle override, if any */
|
|
gv = gv_fetchpv("require", FALSE, SVt_PVCV);
|
|
if (!(gv && GvIMPORTED_CV(gv)))
|
|
gv = gv_fetchpv("CORE::GLOBAL::require", FALSE, SVt_PVCV);
|
|
|
|
if (gv && GvIMPORTED_CV(gv)) {
|
|
rqop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED,
|
|
append_elem(OP_LIST, id,
|
|
scalar(newUNOP(OP_RV2CV, 0,
|
|
newGVOP(OP_GV, 0,
|
|
gv))))));
|
|
}
|
|
else {
|
|
rqop = newUNOP(OP_REQUIRE, 0, id);
|
|
}
|
|
|
|
/* Fake up the BEGIN {}, which does its thing immediately. */
|
|
newATTRSUB(floor,
|
|
newSVOP(OP_CONST, 0, newSVpvn("BEGIN", 5)),
|
|
Nullop,
|
|
Nullop,
|
|
append_elem(OP_LINESEQ,
|
|
append_elem(OP_LINESEQ,
|
|
newSTATEOP(0, Nullch, rqop),
|
|
newSTATEOP(0, Nullch, veop)),
|
|
newSTATEOP(0, Nullch, imop) ));
|
|
|
|
PL_hints |= HINT_BLOCK_SCOPE;
|
|
PL_copline = NOLINE;
|
|
PL_expect = XSTATE;
|
|
}
|
|
|
|
void
|
|
Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...)
|
|
{
|
|
va_list args;
|
|
va_start(args, ver);
|
|
vload_module(flags, name, ver, &args);
|
|
va_end(args);
|
|
}
|
|
|
|
#ifdef PERL_IMPLICIT_CONTEXT
|
|
void
|
|
Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...)
|
|
{
|
|
dTHX;
|
|
va_list args;
|
|
va_start(args, ver);
|
|
vload_module(flags, name, ver, &args);
|
|
va_end(args);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args)
|
|
{
|
|
OP *modname, *veop, *imop;
|
|
|
|
modname = newSVOP(OP_CONST, 0, name);
|
|
modname->op_private |= OPpCONST_BARE;
|
|
if (ver) {
|
|
veop = newSVOP(OP_CONST, 0, ver);
|
|
}
|
|
else
|
|
veop = Nullop;
|
|
if (flags & PERL_LOADMOD_NOIMPORT) {
|
|
imop = sawparens(newNULLLIST());
|
|
}
|
|
else if (flags & PERL_LOADMOD_IMPORT_OPS) {
|
|
imop = va_arg(*args, OP*);
|
|
}
|
|
else {
|
|
SV *sv;
|
|
imop = Nullop;
|
|
sv = va_arg(*args, SV*);
|
|
while (sv) {
|
|
imop = append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv));
|
|
sv = va_arg(*args, SV*);
|
|
}
|
|
}
|
|
utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0),
|
|
veop, modname, imop);
|
|
}
|
|
|
|
OP *
|
|
Perl_dofile(pTHX_ OP *term)
|
|
{
|
|
OP *doop;
|
|
GV *gv;
|
|
|
|
gv = gv_fetchpv("do", FALSE, SVt_PVCV);
|
|
if (!(gv && GvIMPORTED_CV(gv)))
|
|
gv = gv_fetchpv("CORE::GLOBAL::do", FALSE, SVt_PVCV);
|
|
|
|
if (gv && GvIMPORTED_CV(gv)) {
|
|
doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED,
|
|
append_elem(OP_LIST, term,
|
|
scalar(newUNOP(OP_RV2CV, 0,
|
|
newGVOP(OP_GV, 0,
|
|
gv))))));
|
|
}
|
|
else {
|
|
doop = newUNOP(OP_DOFILE, 0, scalar(term));
|
|
}
|
|
return doop;
|
|
}
|
|
|
|
OP *
|
|
Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval)
|
|
{
|
|
return newBINOP(OP_LSLICE, flags,
|
|
list(force_list(subscript)),
|
|
list(force_list(listval)) );
|
|
}
|
|
|
|
STATIC I32
|
|
S_list_assignment(pTHX_ register OP *o)
|
|
{
|
|
if (!o)
|
|
return TRUE;
|
|
|
|
if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS)
|
|
o = cUNOPo->op_first;
|
|
|
|
if (o->op_type == OP_COND_EXPR) {
|
|
I32 t = list_assignment(cLOGOPo->op_first->op_sibling);
|
|
I32 f = list_assignment(cLOGOPo->op_first->op_sibling->op_sibling);
|
|
|
|
if (t && f)
|
|
return TRUE;
|
|
if (t || f)
|
|
yyerror("Assignment to both a list and a scalar");
|
|
return FALSE;
|
|
}
|
|
|
|
if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS ||
|
|
o->op_type == OP_RV2AV || o->op_type == OP_RV2HV ||
|
|
o->op_type == OP_ASLICE || o->op_type == OP_HSLICE)
|
|
return TRUE;
|
|
|
|
if (o->op_type == OP_PADAV || o->op_type == OP_PADHV)
|
|
return TRUE;
|
|
|
|
if (o->op_type == OP_RV2SV)
|
|
return FALSE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
OP *
|
|
Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right)
|
|
{
|
|
OP *o;
|
|
|
|
if (optype) {
|
|
if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) {
|
|
return newLOGOP(optype, 0,
|
|
mod(scalar(left), optype),
|
|
newUNOP(OP_SASSIGN, 0, scalar(right)));
|
|
}
|
|
else {
|
|
return newBINOP(optype, OPf_STACKED,
|
|
mod(scalar(left), optype), scalar(right));
|
|
}
|
|
}
|
|
|
|
if (list_assignment(left)) {
|
|
dTHR;
|
|
OP *curop;
|
|
|
|
PL_modcount = 0;
|
|
PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/
|
|
left = mod(left, OP_AASSIGN);
|
|
if (PL_eval_start)
|
|
PL_eval_start = 0;
|
|
else {
|
|
op_free(left);
|
|
op_free(right);
|
|
return Nullop;
|
|
}
|
|
curop = list(force_list(left));
|
|
o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop);
|
|
o->op_private = 0 | (flags >> 8);
|
|
for (curop = ((LISTOP*)curop)->op_first;
|
|
curop; curop = curop->op_sibling)
|
|
{
|
|
if (curop->op_type == OP_RV2HV &&
|
|
((UNOP*)curop)->op_first->op_type != OP_GV) {
|
|
o->op_private |= OPpASSIGN_HASH;
|
|
break;
|
|
}
|
|
}
|
|
if (!(left->op_private & OPpLVAL_INTRO)) {
|
|
OP *lastop = o;
|
|
PL_generation++;
|
|
for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) {
|
|
if (PL_opargs[curop->op_type] & OA_DANGEROUS) {
|
|
if (curop->op_type == OP_GV) {
|
|
GV *gv = cGVOPx_gv(curop);
|
|
if (gv == PL_defgv || SvCUR(gv) == PL_generation)
|
|
break;
|
|
SvCUR(gv) = PL_generation;
|
|
}
|
|
else if (curop->op_type == OP_PADSV ||
|
|
curop->op_type == OP_PADAV ||
|
|
curop->op_type == OP_PADHV ||
|
|
curop->op_type == OP_PADANY) {
|
|
SV **svp = AvARRAY(PL_comppad_name);
|
|
SV *sv = svp[curop->op_targ];
|
|
if (SvCUR(sv) == PL_generation)
|
|
break;
|
|
SvCUR(sv) = PL_generation; /* (SvCUR not used any more) */
|
|
}
|
|
else if (curop->op_type == OP_RV2CV)
|
|
break;
|
|
else if (curop->op_type == OP_RV2SV ||
|
|
curop->op_type == OP_RV2AV ||
|
|
curop->op_type == OP_RV2HV ||
|
|
curop->op_type == OP_RV2GV) {
|
|
if (lastop->op_type != OP_GV) /* funny deref? */
|
|
break;
|
|
}
|
|
else if (curop->op_type == OP_PUSHRE) {
|
|
if (((PMOP*)curop)->op_pmreplroot) {
|
|
GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot;
|
|
if (gv == PL_defgv || SvCUR(gv) == PL_generation)
|
|
break;
|
|
SvCUR(gv) = PL_generation;
|
|
}
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
lastop = curop;
|
|
}
|
|
if (curop != o)
|
|
o->op_private |= OPpASSIGN_COMMON;
|
|
}
|
|
if (right && right->op_type == OP_SPLIT) {
|
|
OP* tmpop;
|
|
if ((tmpop = ((LISTOP*)right)->op_first) &&
|
|
tmpop->op_type == OP_PUSHRE)
|
|
{
|
|
PMOP *pm = (PMOP*)tmpop;
|
|
if (left->op_type == OP_RV2AV &&
|
|
!(left->op_private & OPpLVAL_INTRO) &&
|
|
!(o->op_private & OPpASSIGN_COMMON) )
|
|
{
|
|
tmpop = ((UNOP*)left)->op_first;
|
|
if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) {
|
|
#ifdef USE_ITHREADS
|
|
pm->op_pmreplroot = (OP*)cPADOPx(tmpop)->op_padix;
|
|
cPADOPx(tmpop)->op_padix = 0; /* steal it */
|
|
#else
|
|
pm->op_pmreplroot = (OP*)cSVOPx(tmpop)->op_sv;
|
|
cSVOPx(tmpop)->op_sv = Nullsv; /* steal it */
|
|
#endif
|
|
pm->op_pmflags |= PMf_ONCE;
|
|
tmpop = cUNOPo->op_first; /* to list (nulled) */
|
|
tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */
|
|
tmpop->op_sibling = Nullop; /* don't free split */
|
|
right->op_next = tmpop->op_next; /* fix starting loc */
|
|
op_free(o); /* blow off assign */
|
|
right->op_flags &= ~OPf_WANT;
|
|
/* "I don't know and I don't care." */
|
|
return right;
|
|
}
|
|
}
|
|
else {
|
|
if (PL_modcount < 10000 &&
|
|
((LISTOP*)right)->op_last->op_type == OP_CONST)
|
|
{
|
|
SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv;
|
|
if (SvIVX(sv) == 0)
|
|
sv_setiv(sv, PL_modcount+1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return o;
|
|
}
|
|
if (!right)
|
|
right = newOP(OP_UNDEF, 0);
|
|
if (right->op_type == OP_READLINE) {
|
|
right->op_flags |= OPf_STACKED;
|
|
return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right));
|
|
}
|
|
else {
|
|
PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/
|
|
o = newBINOP(OP_SASSIGN, flags,
|
|
scalar(right), mod(scalar(left), OP_SASSIGN) );
|
|
if (PL_eval_start)
|
|
PL_eval_start = 0;
|
|
else {
|
|
op_free(o);
|
|
return Nullop;
|
|
}
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o)
|
|
{
|
|
dTHR;
|
|
U32 seq = intro_my();
|
|
register COP *cop;
|
|
|
|
NewOp(1101, cop, 1, COP);
|
|
if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) {
|
|
cop->op_type = OP_DBSTATE;
|
|
cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ];
|
|
}
|
|
else {
|
|
cop->op_type = OP_NEXTSTATE;
|
|
cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ];
|
|
}
|
|
cop->op_flags = flags;
|
|
cop->op_private = (PL_hints & HINT_BYTE);
|
|
#ifdef NATIVE_HINTS
|
|
cop->op_private |= NATIVE_HINTS;
|
|
#endif
|
|
PL_compiling.op_private = cop->op_private;
|
|
cop->op_next = (OP*)cop;
|
|
|
|
if (label) {
|
|
cop->cop_label = label;
|
|
PL_hints |= HINT_BLOCK_SCOPE;
|
|
}
|
|
cop->cop_seq = seq;
|
|
cop->cop_arybase = PL_curcop->cop_arybase;
|
|
if (specialWARN(PL_curcop->cop_warnings))
|
|
cop->cop_warnings = PL_curcop->cop_warnings ;
|
|
else
|
|
cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ;
|
|
|
|
|
|
if (PL_copline == NOLINE)
|
|
CopLINE_set(cop, CopLINE(PL_curcop));
|
|
else {
|
|
CopLINE_set(cop, PL_copline);
|
|
PL_copline = NOLINE;
|
|
}
|
|
#ifdef USE_ITHREADS
|
|
CopFILE_set(cop, CopFILE(PL_curcop)); /* XXXXX share in a pvtable? */
|
|
#else
|
|
CopFILEGV_set(cop, (GV*)SvREFCNT_inc(CopFILEGV(PL_curcop)));
|
|
#endif
|
|
CopSTASH_set(cop, PL_curstash);
|
|
|
|
if (PERLDB_LINE && PL_curstash != PL_debstash) {
|
|
SV **svp = av_fetch(CopFILEAV(PL_curcop), (I32)CopLINE(cop), FALSE);
|
|
if (svp && *svp != &PL_sv_undef && !SvIOK(*svp)) {
|
|
(void)SvIOK_on(*svp);
|
|
SvIVX(*svp) = PTR2IV(cop);
|
|
}
|
|
}
|
|
|
|
return prepend_elem(OP_LINESEQ, (OP*)cop, o);
|
|
}
|
|
|
|
/* "Introduce" my variables to visible status. */
|
|
U32
|
|
Perl_intro_my(pTHX)
|
|
{
|
|
SV **svp;
|
|
SV *sv;
|
|
I32 i;
|
|
|
|
if (! PL_min_intro_pending)
|
|
return PL_cop_seqmax;
|
|
|
|
svp = AvARRAY(PL_comppad_name);
|
|
for (i = PL_min_intro_pending; i <= PL_max_intro_pending; i++) {
|
|
if ((sv = svp[i]) && sv != &PL_sv_undef && !SvIVX(sv)) {
|
|
SvIVX(sv) = PAD_MAX; /* Don't know scope end yet. */
|
|
SvNVX(sv) = (NV)PL_cop_seqmax;
|
|
}
|
|
}
|
|
PL_min_intro_pending = 0;
|
|
PL_comppad_name_fill = PL_max_intro_pending; /* Needn't search higher */
|
|
return PL_cop_seqmax++;
|
|
}
|
|
|
|
OP *
|
|
Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other)
|
|
{
|
|
return new_logop(type, flags, &first, &other);
|
|
}
|
|
|
|
STATIC OP *
|
|
S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp)
|
|
{
|
|
dTHR;
|
|
LOGOP *logop;
|
|
OP *o;
|
|
OP *first = *firstp;
|
|
OP *other = *otherp;
|
|
|
|
if (type == OP_XOR) /* Not short circuit, but here by precedence. */
|
|
return newBINOP(type, flags, scalar(first), scalar(other));
|
|
|
|
scalarboolean(first);
|
|
/* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */
|
|
if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) {
|
|
if (type == OP_AND || type == OP_OR) {
|
|
if (type == OP_AND)
|
|
type = OP_OR;
|
|
else
|
|
type = OP_AND;
|
|
o = first;
|
|
first = *firstp = cUNOPo->op_first;
|
|
if (o->op_next)
|
|
first->op_next = o->op_next;
|
|
cUNOPo->op_first = Nullop;
|
|
op_free(o);
|
|
}
|
|
}
|
|
if (first->op_type == OP_CONST) {
|
|
if (ckWARN(WARN_BAREWORD) && (first->op_private & OPpCONST_BARE))
|
|
Perl_warner(aTHX_ WARN_BAREWORD, "Bareword found in conditional");
|
|
if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) {
|
|
op_free(first);
|
|
*firstp = Nullop;
|
|
return other;
|
|
}
|
|
else {
|
|
op_free(other);
|
|
*otherp = Nullop;
|
|
return first;
|
|
}
|
|
}
|
|
else if (first->op_type == OP_WANTARRAY) {
|
|
if (type == OP_AND)
|
|
list(other);
|
|
else
|
|
scalar(other);
|
|
}
|
|
else if (ckWARN(WARN_MISC) && (first->op_flags & OPf_KIDS)) {
|
|
OP *k1 = ((UNOP*)first)->op_first;
|
|
OP *k2 = k1->op_sibling;
|
|
OPCODE warnop = 0;
|
|
switch (first->op_type)
|
|
{
|
|
case OP_NULL:
|
|
if (k2 && k2->op_type == OP_READLINE
|
|
&& (k2->op_flags & OPf_STACKED)
|
|
&& ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR))
|
|
{
|
|
warnop = k2->op_type;
|
|
}
|
|
break;
|
|
|
|
case OP_SASSIGN:
|
|
if (k1->op_type == OP_READDIR
|
|
|| k1->op_type == OP_GLOB
|
|
|| (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB)
|
|
|| k1->op_type == OP_EACH)
|
|
{
|
|
warnop = ((k1->op_type == OP_NULL)
|
|
? k1->op_targ : k1->op_type);
|
|
}
|
|
break;
|
|
}
|
|
if (warnop) {
|
|
line_t oldline = CopLINE(PL_curcop);
|
|
CopLINE_set(PL_curcop, PL_copline);
|
|
Perl_warner(aTHX_ WARN_MISC,
|
|
"Value of %s%s can be \"0\"; test with defined()",
|
|
PL_op_desc[warnop],
|
|
((warnop == OP_READLINE || warnop == OP_GLOB)
|
|
? " construct" : "() operator"));
|
|
CopLINE_set(PL_curcop, oldline);
|
|
}
|
|
}
|
|
|
|
if (!other)
|
|
return first;
|
|
|
|
if (type == OP_ANDASSIGN || type == OP_ORASSIGN)
|
|
other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */
|
|
|
|
NewOp(1101, logop, 1, LOGOP);
|
|
|
|
logop->op_type = type;
|
|
logop->op_ppaddr = PL_ppaddr[type];
|
|
logop->op_first = first;
|
|
logop->op_flags = flags | OPf_KIDS;
|
|
logop->op_other = LINKLIST(other);
|
|
logop->op_private = 1 | (flags >> 8);
|
|
|
|
/* establish postfix order */
|
|
logop->op_next = LINKLIST(first);
|
|
first->op_next = (OP*)logop;
|
|
first->op_sibling = other;
|
|
|
|
o = newUNOP(OP_NULL, 0, (OP*)logop);
|
|
other->op_next = o;
|
|
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop)
|
|
{
|
|
dTHR;
|
|
LOGOP *logop;
|
|
OP *start;
|
|
OP *o;
|
|
|
|
if (!falseop)
|
|
return newLOGOP(OP_AND, 0, first, trueop);
|
|
if (!trueop)
|
|
return newLOGOP(OP_OR, 0, first, falseop);
|
|
|
|
scalarboolean(first);
|
|
if (first->op_type == OP_CONST) {
|
|
if (SvTRUE(((SVOP*)first)->op_sv)) {
|
|
op_free(first);
|
|
op_free(falseop);
|
|
return trueop;
|
|
}
|
|
else {
|
|
op_free(first);
|
|
op_free(trueop);
|
|
return falseop;
|
|
}
|
|
}
|
|
else if (first->op_type == OP_WANTARRAY) {
|
|
list(trueop);
|
|
scalar(falseop);
|
|
}
|
|
NewOp(1101, logop, 1, LOGOP);
|
|
logop->op_type = OP_COND_EXPR;
|
|
logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR];
|
|
logop->op_first = first;
|
|
logop->op_flags = flags | OPf_KIDS;
|
|
logop->op_private = 1 | (flags >> 8);
|
|
logop->op_other = LINKLIST(trueop);
|
|
logop->op_next = LINKLIST(falseop);
|
|
|
|
|
|
/* establish postfix order */
|
|
start = LINKLIST(first);
|
|
first->op_next = (OP*)logop;
|
|
|
|
first->op_sibling = trueop;
|
|
trueop->op_sibling = falseop;
|
|
o = newUNOP(OP_NULL, 0, (OP*)logop);
|
|
|
|
trueop->op_next = falseop->op_next = o;
|
|
|
|
o->op_next = start;
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right)
|
|
{
|
|
dTHR;
|
|
LOGOP *range;
|
|
OP *flip;
|
|
OP *flop;
|
|
OP *leftstart;
|
|
OP *o;
|
|
|
|
NewOp(1101, range, 1, LOGOP);
|
|
|
|
range->op_type = OP_RANGE;
|
|
range->op_ppaddr = PL_ppaddr[OP_RANGE];
|
|
range->op_first = left;
|
|
range->op_flags = OPf_KIDS;
|
|
leftstart = LINKLIST(left);
|
|
range->op_other = LINKLIST(right);
|
|
range->op_private = 1 | (flags >> 8);
|
|
|
|
left->op_sibling = right;
|
|
|
|
range->op_next = (OP*)range;
|
|
flip = newUNOP(OP_FLIP, flags, (OP*)range);
|
|
flop = newUNOP(OP_FLOP, 0, flip);
|
|
o = newUNOP(OP_NULL, 0, flop);
|
|
linklist(flop);
|
|
range->op_next = leftstart;
|
|
|
|
left->op_next = flip;
|
|
right->op_next = flop;
|
|
|
|
range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY);
|
|
sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV);
|
|
flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY);
|
|
sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV);
|
|
|
|
flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0;
|
|
flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0;
|
|
|
|
flip->op_next = o;
|
|
if (!flip->op_private || !flop->op_private)
|
|
linklist(o); /* blow off optimizer unless constant */
|
|
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block)
|
|
{
|
|
dTHR;
|
|
OP* listop;
|
|
OP* o;
|
|
int once = block && block->op_flags & OPf_SPECIAL &&
|
|
(block->op_type == OP_ENTERSUB || block->op_type == OP_NULL);
|
|
|
|
if (expr) {
|
|
if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv))
|
|
return block; /* do {} while 0 does once */
|
|
if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB
|
|
|| (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) {
|
|
expr = newUNOP(OP_DEFINED, 0,
|
|
newASSIGNOP(0, newDEFSVOP(), 0, expr) );
|
|
} else if (expr->op_flags & OPf_KIDS) {
|
|
OP *k1 = ((UNOP*)expr)->op_first;
|
|
OP *k2 = (k1) ? k1->op_sibling : NULL;
|
|
switch (expr->op_type) {
|
|
case OP_NULL:
|
|
if (k2 && k2->op_type == OP_READLINE
|
|
&& (k2->op_flags & OPf_STACKED)
|
|
&& ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR))
|
|
expr = newUNOP(OP_DEFINED, 0, expr);
|
|
break;
|
|
|
|
case OP_SASSIGN:
|
|
if (k1->op_type == OP_READDIR
|
|
|| k1->op_type == OP_GLOB
|
|
|| (k1->op_type == OP_NULL && k1->op_targ == OP_NULL)
|
|
|| k1->op_type == OP_EACH)
|
|
expr = newUNOP(OP_DEFINED, 0, expr);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0));
|
|
o = new_logop(OP_AND, 0, &expr, &listop);
|
|
|
|
if (listop)
|
|
((LISTOP*)listop)->op_last->op_next = LINKLIST(o);
|
|
|
|
if (once && o != listop)
|
|
o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other;
|
|
|
|
if (o == listop)
|
|
o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */
|
|
|
|
o->op_flags |= flags;
|
|
o = scope(o);
|
|
o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont)
|
|
{
|
|
dTHR;
|
|
OP *redo;
|
|
OP *next = 0;
|
|
OP *listop;
|
|
OP *o;
|
|
OP *condop;
|
|
U8 loopflags = 0;
|
|
|
|
if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB
|
|
|| (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) {
|
|
expr = newUNOP(OP_DEFINED, 0,
|
|
newASSIGNOP(0, newDEFSVOP(), 0, expr) );
|
|
} else if (expr && (expr->op_flags & OPf_KIDS)) {
|
|
OP *k1 = ((UNOP*)expr)->op_first;
|
|
OP *k2 = (k1) ? k1->op_sibling : NULL;
|
|
switch (expr->op_type) {
|
|
case OP_NULL:
|
|
if (k2 && k2->op_type == OP_READLINE
|
|
&& (k2->op_flags & OPf_STACKED)
|
|
&& ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR))
|
|
expr = newUNOP(OP_DEFINED, 0, expr);
|
|
break;
|
|
|
|
case OP_SASSIGN:
|
|
if (k1->op_type == OP_READDIR
|
|
|| k1->op_type == OP_GLOB
|
|
|| (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB)
|
|
|| k1->op_type == OP_EACH)
|
|
expr = newUNOP(OP_DEFINED, 0, expr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!block)
|
|
block = newOP(OP_NULL, 0);
|
|
else if (cont) {
|
|
block = scope(block);
|
|
}
|
|
|
|
if (cont) {
|
|
next = LINKLIST(cont);
|
|
loopflags |= OPpLOOP_CONTINUE;
|
|
}
|
|
if (expr) {
|
|
cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0));
|
|
if ((line_t)whileline != NOLINE) {
|
|
PL_copline = whileline;
|
|
cont = append_elem(OP_LINESEQ, cont,
|
|
newSTATEOP(0, Nullch, Nullop));
|
|
}
|
|
}
|
|
|
|
listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont);
|
|
redo = LINKLIST(listop);
|
|
|
|
if (expr) {
|
|
PL_copline = whileline;
|
|
scalar(listop);
|
|
o = new_logop(OP_AND, 0, &expr, &listop);
|
|
if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) {
|
|
op_free(expr); /* oops, it's a while (0) */
|
|
op_free((OP*)loop);
|
|
return Nullop; /* listop already freed by new_logop */
|
|
}
|
|
if (listop)
|
|
((LISTOP*)listop)->op_last->op_next = condop =
|
|
(o == listop ? redo : LINKLIST(o));
|
|
if (!next)
|
|
next = condop;
|
|
}
|
|
else
|
|
o = listop;
|
|
|
|
if (!loop) {
|
|
NewOp(1101,loop,1,LOOP);
|
|
loop->op_type = OP_ENTERLOOP;
|
|
loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP];
|
|
loop->op_private = 0;
|
|
loop->op_next = (OP*)loop;
|
|
}
|
|
|
|
o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o);
|
|
|
|
loop->op_redoop = redo;
|
|
loop->op_lastop = o;
|
|
o->op_private |= loopflags;
|
|
|
|
if (next)
|
|
loop->op_nextop = next;
|
|
else
|
|
loop->op_nextop = o;
|
|
|
|
o->op_flags |= flags;
|
|
o->op_private |= (flags >> 8);
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_newFOROP(pTHX_ I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont)
|
|
{
|
|
LOOP *loop;
|
|
OP *wop;
|
|
int padoff = 0;
|
|
I32 iterflags = 0;
|
|
|
|
if (sv) {
|
|
if (sv->op_type == OP_RV2SV) { /* symbol table variable */
|
|
sv->op_type = OP_RV2GV;
|
|
sv->op_ppaddr = PL_ppaddr[OP_RV2GV];
|
|
}
|
|
else if (sv->op_type == OP_PADSV) { /* private variable */
|
|
padoff = sv->op_targ;
|
|
sv->op_targ = 0;
|
|
op_free(sv);
|
|
sv = Nullop;
|
|
}
|
|
else if (sv->op_type == OP_THREADSV) { /* per-thread variable */
|
|
padoff = sv->op_targ;
|
|
sv->op_targ = 0;
|
|
iterflags |= OPf_SPECIAL;
|
|
op_free(sv);
|
|
sv = Nullop;
|
|
}
|
|
else
|
|
Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]);
|
|
}
|
|
else {
|
|
#ifdef USE_THREADS
|
|
padoff = find_threadsv("_");
|
|
iterflags |= OPf_SPECIAL;
|
|
#else
|
|
sv = newGVOP(OP_GV, 0, PL_defgv);
|
|
#endif
|
|
}
|
|
if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) {
|
|
expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART);
|
|
iterflags |= OPf_STACKED;
|
|
}
|
|
else if (expr->op_type == OP_NULL &&
|
|
(expr->op_flags & OPf_KIDS) &&
|
|
((BINOP*)expr)->op_first->op_type == OP_FLOP)
|
|
{
|
|
/* Basically turn for($x..$y) into the same as for($x,$y), but we
|
|
* set the STACKED flag to indicate that these values are to be
|
|
* treated as min/max values by 'pp_iterinit'.
|
|
*/
|
|
UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first;
|
|
LOGOP* range = (LOGOP*) flip->op_first;
|
|
OP* left = range->op_first;
|
|
OP* right = left->op_sibling;
|
|
LISTOP* listop;
|
|
|
|
range->op_flags &= ~OPf_KIDS;
|
|
range->op_first = Nullop;
|
|
|
|
listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right);
|
|
listop->op_first->op_next = range->op_next;
|
|
left->op_next = range->op_other;
|
|
right->op_next = (OP*)listop;
|
|
listop->op_next = listop->op_first;
|
|
|
|
op_free(expr);
|
|
expr = (OP*)(listop);
|
|
null(expr);
|
|
iterflags |= OPf_STACKED;
|
|
}
|
|
else {
|
|
expr = mod(force_list(expr), OP_GREPSTART);
|
|
}
|
|
|
|
|
|
loop = (LOOP*)list(convert(OP_ENTERITER, iterflags,
|
|
append_elem(OP_LIST, expr, scalar(sv))));
|
|
assert(!loop->op_next);
|
|
#ifdef PL_OP_SLAB_ALLOC
|
|
{
|
|
LOOP *tmp;
|
|
NewOp(1234,tmp,1,LOOP);
|
|
Copy(loop,tmp,1,LOOP);
|
|
loop = tmp;
|
|
}
|
|
#else
|
|
Renew(loop, 1, LOOP);
|
|
#endif
|
|
loop->op_targ = padoff;
|
|
wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont);
|
|
PL_copline = forline;
|
|
return newSTATEOP(0, label, wop);
|
|
}
|
|
|
|
OP*
|
|
Perl_newLOOPEX(pTHX_ I32 type, OP *label)
|
|
{
|
|
dTHR;
|
|
OP *o;
|
|
STRLEN n_a;
|
|
|
|
if (type != OP_GOTO || label->op_type == OP_CONST) {
|
|
/* "last()" means "last" */
|
|
if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS))
|
|
o = newOP(type, OPf_SPECIAL);
|
|
else {
|
|
o = newPVOP(type, 0, savepv(label->op_type == OP_CONST
|
|
? SvPVx(((SVOP*)label)->op_sv, n_a)
|
|
: ""));
|
|
}
|
|
op_free(label);
|
|
}
|
|
else {
|
|
if (label->op_type == OP_ENTERSUB)
|
|
label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN));
|
|
o = newUNOP(type, OPf_STACKED, label);
|
|
}
|
|
PL_hints |= HINT_BLOCK_SCOPE;
|
|
return o;
|
|
}
|
|
|
|
void
|
|
Perl_cv_undef(pTHX_ CV *cv)
|
|
{
|
|
dTHR;
|
|
#ifdef USE_THREADS
|
|
if (CvMUTEXP(cv)) {
|
|
MUTEX_DESTROY(CvMUTEXP(cv));
|
|
Safefree(CvMUTEXP(cv));
|
|
CvMUTEXP(cv) = 0;
|
|
}
|
|
#endif /* USE_THREADS */
|
|
|
|
if (!CvXSUB(cv) && CvROOT(cv)) {
|
|
#ifdef USE_THREADS
|
|
if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr))
|
|
Perl_croak(aTHX_ "Can't undef active subroutine");
|
|
#else
|
|
if (CvDEPTH(cv))
|
|
Perl_croak(aTHX_ "Can't undef active subroutine");
|
|
#endif /* USE_THREADS */
|
|
ENTER;
|
|
|
|
SAVEVPTR(PL_curpad);
|
|
PL_curpad = 0;
|
|
|
|
if (!CvCLONED(cv))
|
|
op_free(CvROOT(cv));
|
|
CvROOT(cv) = Nullop;
|
|
LEAVE;
|
|
}
|
|
SvPOK_off((SV*)cv); /* forget prototype */
|
|
CvFLAGS(cv) = 0;
|
|
SvREFCNT_dec(CvGV(cv));
|
|
CvGV(cv) = Nullgv;
|
|
SvREFCNT_dec(CvOUTSIDE(cv));
|
|
CvOUTSIDE(cv) = Nullcv;
|
|
if (CvPADLIST(cv)) {
|
|
/* may be during global destruction */
|
|
if (SvREFCNT(CvPADLIST(cv))) {
|
|
I32 i = AvFILLp(CvPADLIST(cv));
|
|
while (i >= 0) {
|
|
SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE);
|
|
SV* sv = svp ? *svp : Nullsv;
|
|
if (!sv)
|
|
continue;
|
|
if (sv == (SV*)PL_comppad_name)
|
|
PL_comppad_name = Nullav;
|
|
else if (sv == (SV*)PL_comppad) {
|
|
PL_comppad = Nullav;
|
|
PL_curpad = Null(SV**);
|
|
}
|
|
SvREFCNT_dec(sv);
|
|
}
|
|
SvREFCNT_dec((SV*)CvPADLIST(cv));
|
|
}
|
|
CvPADLIST(cv) = Nullav;
|
|
}
|
|
}
|
|
|
|
STATIC void
|
|
S_cv_dump(pTHX_ CV *cv)
|
|
{
|
|
#ifdef DEBUGGING
|
|
CV *outside = CvOUTSIDE(cv);
|
|
AV* padlist = CvPADLIST(cv);
|
|
AV* pad_name;
|
|
AV* pad;
|
|
SV** pname;
|
|
SV** ppad;
|
|
I32 ix;
|
|
|
|
PerlIO_printf(Perl_debug_log,
|
|
"\tCV=0x%"UVxf" (%s), OUTSIDE=0x%"UVxf" (%s)\n",
|
|
PTR2UV(cv),
|
|
(CvANON(cv) ? "ANON"
|
|
: (cv == PL_main_cv) ? "MAIN"
|
|
: CvUNIQUE(cv) ? "UNIQUE"
|
|
: CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"),
|
|
PTR2UV(outside),
|
|
(!outside ? "null"
|
|
: CvANON(outside) ? "ANON"
|
|
: (outside == PL_main_cv) ? "MAIN"
|
|
: CvUNIQUE(outside) ? "UNIQUE"
|
|
: CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED"));
|
|
|
|
if (!padlist)
|
|
return;
|
|
|
|
pad_name = (AV*)*av_fetch(padlist, 0, FALSE);
|
|
pad = (AV*)*av_fetch(padlist, 1, FALSE);
|
|
pname = AvARRAY(pad_name);
|
|
ppad = AvARRAY(pad);
|
|
|
|
for (ix = 1; ix <= AvFILLp(pad_name); ix++) {
|
|
if (SvPOK(pname[ix]))
|
|
PerlIO_printf(Perl_debug_log,
|
|
"\t%4d. 0x%"UVxf" (%s\"%s\" %"IVdf"-%"IVdf")\n",
|
|
(int)ix, PTR2UV(ppad[ix]),
|
|
SvFAKE(pname[ix]) ? "FAKE " : "",
|
|
SvPVX(pname[ix]),
|
|
(IV)I_32(SvNVX(pname[ix])),
|
|
SvIVX(pname[ix]));
|
|
}
|
|
#endif /* DEBUGGING */
|
|
}
|
|
|
|
STATIC CV *
|
|
S_cv_clone2(pTHX_ CV *proto, CV *outside)
|
|
{
|
|
dTHR;
|
|
AV* av;
|
|
I32 ix;
|
|
AV* protopadlist = CvPADLIST(proto);
|
|
AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE);
|
|
AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE);
|
|
SV** pname = AvARRAY(protopad_name);
|
|
SV** ppad = AvARRAY(protopad);
|
|
I32 fname = AvFILLp(protopad_name);
|
|
I32 fpad = AvFILLp(protopad);
|
|
AV* comppadlist;
|
|
CV* cv;
|
|
|
|
assert(!CvUNIQUE(proto));
|
|
|
|
ENTER;
|
|
SAVECOMPPAD();
|
|
SAVESPTR(PL_comppad_name);
|
|
SAVESPTR(PL_compcv);
|
|
|
|
cv = PL_compcv = (CV*)NEWSV(1104,0);
|
|
sv_upgrade((SV *)cv, SvTYPE(proto));
|
|
CvFLAGS(cv) = CvFLAGS(proto) & ~CVf_CLONE;
|
|
CvCLONED_on(cv);
|
|
|
|
#ifdef USE_THREADS
|
|
New(666, CvMUTEXP(cv), 1, perl_mutex);
|
|
MUTEX_INIT(CvMUTEXP(cv));
|
|
CvOWNER(cv) = 0;
|
|
#endif /* USE_THREADS */
|
|
CvFILE(cv) = CvFILE(proto);
|
|
CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto));
|
|
CvSTASH(cv) = CvSTASH(proto);
|
|
CvROOT(cv) = CvROOT(proto);
|
|
CvSTART(cv) = CvSTART(proto);
|
|
if (outside)
|
|
CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside);
|
|
|
|
if (SvPOK(proto))
|
|
sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto));
|
|
|
|
PL_comppad_name = newAV();
|
|
for (ix = fname; ix >= 0; ix--)
|
|
av_store(PL_comppad_name, ix, SvREFCNT_inc(pname[ix]));
|
|
|
|
PL_comppad = newAV();
|
|
|
|
comppadlist = newAV();
|
|
AvREAL_off(comppadlist);
|
|
av_store(comppadlist, 0, (SV*)PL_comppad_name);
|
|
av_store(comppadlist, 1, (SV*)PL_comppad);
|
|
CvPADLIST(cv) = comppadlist;
|
|
av_fill(PL_comppad, AvFILLp(protopad));
|
|
PL_curpad = AvARRAY(PL_comppad);
|
|
|
|
av = newAV(); /* will be @_ */
|
|
av_extend(av, 0);
|
|
av_store(PL_comppad, 0, (SV*)av);
|
|
AvFLAGS(av) = AVf_REIFY;
|
|
|
|
for (ix = fpad; ix > 0; ix--) {
|
|
SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
|
|
if (namesv && namesv != &PL_sv_undef) {
|
|
char *name = SvPVX(namesv); /* XXX */
|
|
if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */
|
|
I32 off = pad_findlex(name, ix, SvIVX(namesv),
|
|
CvOUTSIDE(cv), cxstack_ix, 0, 0);
|
|
if (!off)
|
|
PL_curpad[ix] = SvREFCNT_inc(ppad[ix]);
|
|
else if (off != ix)
|
|
Perl_croak(aTHX_ "panic: cv_clone: %s", name);
|
|
}
|
|
else { /* our own lexical */
|
|
SV* sv;
|
|
if (*name == '&') {
|
|
/* anon code -- we'll come back for it */
|
|
sv = SvREFCNT_inc(ppad[ix]);
|
|
}
|
|
else if (*name == '@')
|
|
sv = (SV*)newAV();
|
|
else if (*name == '%')
|
|
sv = (SV*)newHV();
|
|
else
|
|
sv = NEWSV(0,0);
|
|
if (!SvPADBUSY(sv))
|
|
SvPADMY_on(sv);
|
|
PL_curpad[ix] = sv;
|
|
}
|
|
}
|
|
else if (IS_PADGV(ppad[ix]) || IS_PADCONST(ppad[ix])) {
|
|
PL_curpad[ix] = SvREFCNT_inc(ppad[ix]);
|
|
}
|
|
else {
|
|
SV* sv = NEWSV(0,0);
|
|
SvPADTMP_on(sv);
|
|
PL_curpad[ix] = sv;
|
|
}
|
|
}
|
|
|
|
/* Now that vars are all in place, clone nested closures. */
|
|
|
|
for (ix = fpad; ix > 0; ix--) {
|
|
SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
|
|
if (namesv
|
|
&& namesv != &PL_sv_undef
|
|
&& !(SvFLAGS(namesv) & SVf_FAKE)
|
|
&& *SvPVX(namesv) == '&'
|
|
&& CvCLONE(ppad[ix]))
|
|
{
|
|
CV *kid = cv_clone2((CV*)ppad[ix], cv);
|
|
SvREFCNT_dec(ppad[ix]);
|
|
CvCLONE_on(kid);
|
|
SvPADMY_on(kid);
|
|
PL_curpad[ix] = (SV*)kid;
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG_CLOSURES
|
|
PerlIO_printf(Perl_debug_log, "Cloned inside:\n");
|
|
cv_dump(outside);
|
|
PerlIO_printf(Perl_debug_log, " from:\n");
|
|
cv_dump(proto);
|
|
PerlIO_printf(Perl_debug_log, " to:\n");
|
|
cv_dump(cv);
|
|
#endif
|
|
|
|
LEAVE;
|
|
return cv;
|
|
}
|
|
|
|
CV *
|
|
Perl_cv_clone(pTHX_ CV *proto)
|
|
{
|
|
CV *cv;
|
|
LOCK_CRED_MUTEX; /* XXX create separate mutex */
|
|
cv = cv_clone2(proto, CvOUTSIDE(proto));
|
|
UNLOCK_CRED_MUTEX; /* XXX create separate mutex */
|
|
return cv;
|
|
}
|
|
|
|
void
|
|
Perl_cv_ckproto(pTHX_ CV *cv, GV *gv, char *p)
|
|
{
|
|
dTHR;
|
|
|
|
if (((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) && ckWARN_d(WARN_PROTOTYPE)) {
|
|
SV* msg = sv_newmortal();
|
|
SV* name = Nullsv;
|
|
|
|
if (gv)
|
|
gv_efullname3(name = sv_newmortal(), gv, Nullch);
|
|
sv_setpv(msg, "Prototype mismatch:");
|
|
if (name)
|
|
Perl_sv_catpvf(aTHX_ msg, " sub %"SVf, name);
|
|
if (SvPOK(cv))
|
|
Perl_sv_catpvf(aTHX_ msg, " (%s)", SvPVX(cv));
|
|
sv_catpv(msg, " vs ");
|
|
if (p)
|
|
Perl_sv_catpvf(aTHX_ msg, "(%s)", p);
|
|
else
|
|
sv_catpv(msg, "none");
|
|
Perl_warner(aTHX_ WARN_PROTOTYPE, "%"SVf, msg);
|
|
}
|
|
}
|
|
|
|
SV *
|
|
Perl_cv_const_sv(pTHX_ CV *cv)
|
|
{
|
|
if (!cv || !SvPOK(cv) || SvCUR(cv))
|
|
return Nullsv;
|
|
return op_const_sv(CvSTART(cv), cv);
|
|
}
|
|
|
|
SV *
|
|
Perl_op_const_sv(pTHX_ OP *o, CV *cv)
|
|
{
|
|
SV *sv = Nullsv;
|
|
|
|
if (!o)
|
|
return Nullsv;
|
|
|
|
if (o->op_type == OP_LINESEQ && cLISTOPo->op_first)
|
|
o = cLISTOPo->op_first->op_sibling;
|
|
|
|
for (; o; o = o->op_next) {
|
|
OPCODE type = o->op_type;
|
|
|
|
if (sv && o->op_next == o)
|
|
return sv;
|
|
if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK)
|
|
continue;
|
|
if (type == OP_LEAVESUB || type == OP_RETURN)
|
|
break;
|
|
if (sv)
|
|
return Nullsv;
|
|
if (type == OP_CONST && cSVOPo->op_sv)
|
|
sv = cSVOPo->op_sv;
|
|
else if ((type == OP_PADSV || type == OP_CONST) && cv) {
|
|
AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]);
|
|
sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv;
|
|
if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1))
|
|
return Nullsv;
|
|
}
|
|
else
|
|
return Nullsv;
|
|
}
|
|
if (sv)
|
|
SvREADONLY_on(sv);
|
|
return sv;
|
|
}
|
|
|
|
void
|
|
Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block)
|
|
{
|
|
if (o)
|
|
SAVEFREEOP(o);
|
|
if (proto)
|
|
SAVEFREEOP(proto);
|
|
if (attrs)
|
|
SAVEFREEOP(attrs);
|
|
if (block)
|
|
SAVEFREEOP(block);
|
|
Perl_croak(aTHX_ "\"my sub\" not yet implemented");
|
|
}
|
|
|
|
CV *
|
|
Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block)
|
|
{
|
|
return Perl_newATTRSUB(aTHX_ floor, o, proto, Nullop, block);
|
|
}
|
|
|
|
CV *
|
|
Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block)
|
|
{
|
|
dTHR;
|
|
STRLEN n_a;
|
|
char *name;
|
|
char *aname;
|
|
GV *gv;
|
|
char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, n_a) : Nullch;
|
|
register CV *cv=0;
|
|
I32 ix;
|
|
|
|
name = o ? SvPVx(cSVOPo->op_sv, n_a) : Nullch;
|
|
if (!name && PERLDB_NAMEANON && CopLINE(PL_curcop)) {
|
|
SV *sv = sv_newmortal();
|
|
Perl_sv_setpvf(aTHX_ sv, "__ANON__[%s:%"IVdf"]",
|
|
CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
|
|
aname = SvPVX(sv);
|
|
}
|
|
else
|
|
aname = Nullch;
|
|
gv = gv_fetchpv(name ? name : (aname ? aname : "__ANON__"),
|
|
GV_ADDMULTI | ((block || attrs) ? 0 : GV_NOINIT),
|
|
SVt_PVCV);
|
|
|
|
if (o)
|
|
SAVEFREEOP(o);
|
|
if (proto)
|
|
SAVEFREEOP(proto);
|
|
if (attrs)
|
|
SAVEFREEOP(attrs);
|
|
|
|
if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at
|
|
maximum a prototype before. */
|
|
if (SvTYPE(gv) > SVt_NULL) {
|
|
if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1)
|
|
&& ckWARN_d(WARN_PROTOTYPE))
|
|
{
|
|
Perl_warner(aTHX_ WARN_PROTOTYPE, "Runaway prototype");
|
|
}
|
|
cv_ckproto((CV*)gv, NULL, ps);
|
|
}
|
|
if (ps)
|
|
sv_setpv((SV*)gv, ps);
|
|
else
|
|
sv_setiv((SV*)gv, -1);
|
|
SvREFCNT_dec(PL_compcv);
|
|
cv = PL_compcv = NULL;
|
|
PL_sub_generation++;
|
|
goto noblock;
|
|
}
|
|
|
|
if (!name || GvCVGEN(gv))
|
|
cv = Nullcv;
|
|
else if ((cv = GvCV(gv))) {
|
|
cv_ckproto(cv, gv, ps);
|
|
/* already defined (or promised)? */
|
|
if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) {
|
|
SV* const_sv;
|
|
bool const_changed = TRUE;
|
|
if (!block && !attrs) {
|
|
/* just a "sub foo;" when &foo is already defined */
|
|
SAVEFREESV(PL_compcv);
|
|
goto done;
|
|
}
|
|
/* ahem, death to those who redefine active sort subs */
|
|
if (PL_curstackinfo->si_type == PERLSI_SORT && PL_sortcop == CvSTART(cv))
|
|
Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", name);
|
|
if (!block)
|
|
goto withattrs;
|
|
if ((const_sv = cv_const_sv(cv)))
|
|
const_changed = sv_cmp(const_sv, op_const_sv(block, Nullcv));
|
|
if ((const_sv || const_changed) && ckWARN(WARN_REDEFINE))
|
|
{
|
|
line_t oldline = CopLINE(PL_curcop);
|
|
CopLINE_set(PL_curcop, PL_copline);
|
|
Perl_warner(aTHX_ WARN_REDEFINE,
|
|
const_sv ? "Constant subroutine %s redefined"
|
|
: "Subroutine %s redefined", name);
|
|
CopLINE_set(PL_curcop, oldline);
|
|
}
|
|
SvREFCNT_dec(cv);
|
|
cv = Nullcv;
|
|
}
|
|
}
|
|
withattrs:
|
|
if (attrs) {
|
|
HV *stash;
|
|
SV *rcv;
|
|
|
|
/* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs>
|
|
* before we clobber PL_compcv.
|
|
*/
|
|
if (cv && !block) {
|
|
rcv = (SV*)cv;
|
|
if (CvGV(cv) && GvSTASH(CvGV(cv)) && HvNAME(GvSTASH(CvGV(cv))))
|
|
stash = GvSTASH(CvGV(cv));
|
|
else if (CvSTASH(cv) && HvNAME(CvSTASH(cv)))
|
|
stash = CvSTASH(cv);
|
|
else
|
|
stash = PL_curstash;
|
|
}
|
|
else {
|
|
/* possibly about to re-define existing subr -- ignore old cv */
|
|
rcv = (SV*)PL_compcv;
|
|
if (name && GvSTASH(gv) && HvNAME(GvSTASH(gv)))
|
|
stash = GvSTASH(gv);
|
|
else
|
|
stash = PL_curstash;
|
|
}
|
|
apply_attrs(stash, rcv, attrs);
|
|
}
|
|
if (cv) { /* must reuse cv if autoloaded */
|
|
if (!block) {
|
|
/* got here with just attrs -- work done, so bug out */
|
|
SAVEFREESV(PL_compcv);
|
|
goto done;
|
|
}
|
|
cv_undef(cv);
|
|
CvFLAGS(cv) = CvFLAGS(PL_compcv);
|
|
CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv);
|
|
CvOUTSIDE(PL_compcv) = 0;
|
|
CvPADLIST(cv) = CvPADLIST(PL_compcv);
|
|
CvPADLIST(PL_compcv) = 0;
|
|
if (SvREFCNT(PL_compcv) > 1) /* XXX Make closures transit through stub. */
|
|
CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc((SV*)cv);
|
|
SvREFCNT_dec(PL_compcv);
|
|
}
|
|
else {
|
|
cv = PL_compcv;
|
|
if (name) {
|
|
GvCV(gv) = cv;
|
|
GvCVGEN(gv) = 0;
|
|
PL_sub_generation++;
|
|
}
|
|
}
|
|
CvGV(cv) = (GV*)SvREFCNT_inc(gv);
|
|
CvFILE(cv) = CopFILE(PL_curcop);
|
|
CvSTASH(cv) = PL_curstash;
|
|
#ifdef USE_THREADS
|
|
CvOWNER(cv) = 0;
|
|
if (!CvMUTEXP(cv)) {
|
|
New(666, CvMUTEXP(cv), 1, perl_mutex);
|
|
MUTEX_INIT(CvMUTEXP(cv));
|
|
}
|
|
#endif /* USE_THREADS */
|
|
|
|
if (ps)
|
|
sv_setpv((SV*)cv, ps);
|
|
|
|
if (PL_error_count) {
|
|
op_free(block);
|
|
block = Nullop;
|
|
if (name) {
|
|
char *s = strrchr(name, ':');
|
|
s = s ? s+1 : name;
|
|
if (strEQ(s, "BEGIN")) {
|
|
char *not_safe =
|
|
"BEGIN not safe after errors--compilation aborted";
|
|
if (PL_in_eval & EVAL_KEEPERR)
|
|
Perl_croak(aTHX_ not_safe);
|
|
else {
|
|
/* force display of errors found but not reported */
|
|
sv_catpv(ERRSV, not_safe);
|
|
Perl_croak(aTHX_ "%s", SvPVx(ERRSV, n_a));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (!block) {
|
|
noblock:
|
|
PL_copline = NOLINE;
|
|
LEAVE_SCOPE(floor);
|
|
return cv;
|
|
}
|
|
|
|
if (AvFILLp(PL_comppad_name) < AvFILLp(PL_comppad))
|
|
av_store(PL_comppad_name, AvFILLp(PL_comppad), Nullsv);
|
|
|
|
if (CvLVALUE(cv)) {
|
|
CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, scalarseq(block));
|
|
}
|
|
else {
|
|
CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block));
|
|
}
|
|
CvROOT(cv)->op_private |= OPpREFCOUNTED;
|
|
OpREFCNT_set(CvROOT(cv), 1);
|
|
CvSTART(cv) = LINKLIST(CvROOT(cv));
|
|
CvROOT(cv)->op_next = 0;
|
|
peep(CvSTART(cv));
|
|
|
|
/* now that optimizer has done its work, adjust pad values */
|
|
if (CvCLONE(cv)) {
|
|
SV **namep = AvARRAY(PL_comppad_name);
|
|
for (ix = AvFILLp(PL_comppad); ix > 0; ix--) {
|
|
SV *namesv;
|
|
|
|
if (SvIMMORTAL(PL_curpad[ix]) || IS_PADGV(PL_curpad[ix]) || IS_PADCONST(PL_curpad[ix]))
|
|
continue;
|
|
/*
|
|
* The only things that a clonable function needs in its
|
|
* pad are references to outer lexicals and anonymous subs.
|
|
* The rest are created anew during cloning.
|
|
*/
|
|
if (!((namesv = namep[ix]) != Nullsv &&
|
|
namesv != &PL_sv_undef &&
|
|
(SvFAKE(namesv) ||
|
|
*SvPVX(namesv) == '&')))
|
|
{
|
|
SvREFCNT_dec(PL_curpad[ix]);
|
|
PL_curpad[ix] = Nullsv;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
AV *av = newAV(); /* Will be @_ */
|
|
av_extend(av, 0);
|
|
av_store(PL_comppad, 0, (SV*)av);
|
|
AvFLAGS(av) = AVf_REIFY;
|
|
|
|
for (ix = AvFILLp(PL_comppad); ix > 0; ix--) {
|
|
if (SvIMMORTAL(PL_curpad[ix]) || IS_PADGV(PL_curpad[ix]) || IS_PADCONST(PL_curpad[ix]))
|
|
continue;
|
|
if (!SvPADMY(PL_curpad[ix]))
|
|
SvPADTMP_on(PL_curpad[ix]);
|
|
}
|
|
}
|
|
|
|
if (name || aname) {
|
|
char *s;
|
|
char *tname = (name ? name : aname);
|
|
|
|
if (PERLDB_SUBLINE && PL_curstash != PL_debstash) {
|
|
SV *sv = NEWSV(0,0);
|
|
SV *tmpstr = sv_newmortal();
|
|
GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV);
|
|
CV *pcv;
|
|
HV *hv;
|
|
|
|
Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld",
|
|
CopFILE(PL_curcop),
|
|
(long)PL_subline, (long)CopLINE(PL_curcop));
|
|
gv_efullname3(tmpstr, gv, Nullch);
|
|
hv_store(GvHV(PL_DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0);
|
|
hv = GvHVn(db_postponed);
|
|
if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr))
|
|
&& (pcv = GvCV(db_postponed)))
|
|
{
|
|
dSP;
|
|
PUSHMARK(SP);
|
|
XPUSHs(tmpstr);
|
|
PUTBACK;
|
|
call_sv((SV*)pcv, G_DISCARD);
|
|
}
|
|
}
|
|
|
|
if ((s = strrchr(tname,':')))
|
|
s++;
|
|
else
|
|
s = tname;
|
|
|
|
if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I')
|
|
goto done;
|
|
|
|
if (strEQ(s, "BEGIN")) {
|
|
I32 oldscope = PL_scopestack_ix;
|
|
ENTER;
|
|
SAVECOPFILE(&PL_compiling);
|
|
SAVECOPLINE(&PL_compiling);
|
|
save_svref(&PL_rs);
|
|
sv_setsv(PL_rs, PL_nrs);
|
|
|
|
if (!PL_beginav)
|
|
PL_beginav = newAV();
|
|
DEBUG_x( dump_sub(gv) );
|
|
av_push(PL_beginav, SvREFCNT_inc(cv));
|
|
GvCV(gv) = 0;
|
|
call_list(oldscope, PL_beginav);
|
|
|
|
PL_curcop = &PL_compiling;
|
|
PL_compiling.op_private = PL_hints;
|
|
LEAVE;
|
|
}
|
|
else if (strEQ(s, "END") && !PL_error_count) {
|
|
if (!PL_endav)
|
|
PL_endav = newAV();
|
|
DEBUG_x( dump_sub(gv) );
|
|
av_unshift(PL_endav, 1);
|
|
av_store(PL_endav, 0, SvREFCNT_inc(cv));
|
|
GvCV(gv) = 0;
|
|
}
|
|
else if (strEQ(s, "CHECK") && !PL_error_count) {
|
|
if (!PL_checkav)
|
|
PL_checkav = newAV();
|
|
DEBUG_x( dump_sub(gv) );
|
|
if (PL_main_start && ckWARN(WARN_VOID))
|
|
Perl_warner(aTHX_ WARN_VOID, "Too late to run CHECK block");
|
|
av_unshift(PL_checkav, 1);
|
|
av_store(PL_checkav, 0, SvREFCNT_inc(cv));
|
|
GvCV(gv) = 0;
|
|
}
|
|
else if (strEQ(s, "INIT") && !PL_error_count) {
|
|
if (!PL_initav)
|
|
PL_initav = newAV();
|
|
DEBUG_x( dump_sub(gv) );
|
|
if (PL_main_start && ckWARN(WARN_VOID))
|
|
Perl_warner(aTHX_ WARN_VOID, "Too late to run INIT block");
|
|
av_push(PL_initav, SvREFCNT_inc(cv));
|
|
GvCV(gv) = 0;
|
|
}
|
|
}
|
|
|
|
done:
|
|
PL_copline = NOLINE;
|
|
LEAVE_SCOPE(floor);
|
|
return cv;
|
|
}
|
|
|
|
/* XXX unsafe for threads if eval_owner isn't held */
|
|
/*
|
|
=for apidoc newCONSTSUB
|
|
|
|
Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is
|
|
eligible for inlining at compile-time.
|
|
|
|
=cut
|
|
*/
|
|
|
|
void
|
|
Perl_newCONSTSUB(pTHX_ HV *stash, char *name, SV *sv)
|
|
{
|
|
dTHR;
|
|
|
|
ENTER;
|
|
SAVECOPLINE(PL_curcop);
|
|
SAVEHINTS();
|
|
|
|
CopLINE_set(PL_curcop, PL_copline);
|
|
PL_hints &= ~HINT_BLOCK_SCOPE;
|
|
|
|
if (stash) {
|
|
SAVESPTR(PL_curstash);
|
|
SAVECOPSTASH(PL_curcop);
|
|
PL_curstash = stash;
|
|
#ifdef USE_ITHREADS
|
|
CopSTASHPV(PL_curcop) = stash ? HvNAME(stash) : Nullch;
|
|
#else
|
|
CopSTASH(PL_curcop) = stash;
|
|
#endif
|
|
}
|
|
|
|
newATTRSUB(
|
|
start_subparse(FALSE, 0),
|
|
newSVOP(OP_CONST, 0, newSVpv(name,0)),
|
|
newSVOP(OP_CONST, 0, &PL_sv_no), /* SvPV(&PL_sv_no) == "" -- GMB */
|
|
Nullop,
|
|
newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv))
|
|
);
|
|
|
|
LEAVE;
|
|
}
|
|
|
|
/*
|
|
=for apidoc U||newXS
|
|
|
|
Used by C<xsubpp> to hook up XSUBs as Perl subs.
|
|
|
|
=cut
|
|
*/
|
|
|
|
CV *
|
|
Perl_newXS(pTHX_ char *name, XSUBADDR_t subaddr, char *filename)
|
|
{
|
|
dTHR;
|
|
GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV);
|
|
register CV *cv;
|
|
|
|
if ((cv = (name ? GvCV(gv) : Nullcv))) {
|
|
if (GvCVGEN(gv)) {
|
|
/* just a cached method */
|
|
SvREFCNT_dec(cv);
|
|
cv = 0;
|
|
}
|
|
else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) {
|
|
/* already defined (or promised) */
|
|
if (ckWARN(WARN_REDEFINE) && !(CvGV(cv) && GvSTASH(CvGV(cv))
|
|
&& HvNAME(GvSTASH(CvGV(cv)))
|
|
&& strEQ(HvNAME(GvSTASH(CvGV(cv))), "autouse"))) {
|
|
line_t oldline = CopLINE(PL_curcop);
|
|
if (PL_copline != NOLINE)
|
|
CopLINE_set(PL_curcop, PL_copline);
|
|
Perl_warner(aTHX_ WARN_REDEFINE, "Subroutine %s redefined",name);
|
|
CopLINE_set(PL_curcop, oldline);
|
|
}
|
|
SvREFCNT_dec(cv);
|
|
cv = 0;
|
|
}
|
|
}
|
|
|
|
if (cv) /* must reuse cv if autoloaded */
|
|
cv_undef(cv);
|
|
else {
|
|
cv = (CV*)NEWSV(1105,0);
|
|
sv_upgrade((SV *)cv, SVt_PVCV);
|
|
if (name) {
|
|
GvCV(gv) = cv;
|
|
GvCVGEN(gv) = 0;
|
|
PL_sub_generation++;
|
|
}
|
|
}
|
|
CvGV(cv) = (GV*)SvREFCNT_inc(gv);
|
|
#ifdef USE_THREADS
|
|
New(666, CvMUTEXP(cv), 1, perl_mutex);
|
|
MUTEX_INIT(CvMUTEXP(cv));
|
|
CvOWNER(cv) = 0;
|
|
#endif /* USE_THREADS */
|
|
(void)gv_fetchfile(filename);
|
|
CvFILE(cv) = filename; /* NOTE: not copied, as it is expected to be
|
|
an external constant string */
|
|
CvXSUB(cv) = subaddr;
|
|
|
|
if (name) {
|
|
char *s = strrchr(name,':');
|
|
if (s)
|
|
s++;
|
|
else
|
|
s = name;
|
|
|
|
if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I')
|
|
goto done;
|
|
|
|
if (strEQ(s, "BEGIN")) {
|
|
if (!PL_beginav)
|
|
PL_beginav = newAV();
|
|
av_push(PL_beginav, SvREFCNT_inc(cv));
|
|
GvCV(gv) = 0;
|
|
}
|
|
else if (strEQ(s, "END")) {
|
|
if (!PL_endav)
|
|
PL_endav = newAV();
|
|
av_unshift(PL_endav, 1);
|
|
av_store(PL_endav, 0, SvREFCNT_inc(cv));
|
|
GvCV(gv) = 0;
|
|
}
|
|
else if (strEQ(s, "CHECK")) {
|
|
if (!PL_checkav)
|
|
PL_checkav = newAV();
|
|
if (PL_main_start && ckWARN(WARN_VOID))
|
|
Perl_warner(aTHX_ WARN_VOID, "Too late to run CHECK block");
|
|
av_unshift(PL_checkav, 1);
|
|
av_store(PL_checkav, 0, SvREFCNT_inc(cv));
|
|
GvCV(gv) = 0;
|
|
}
|
|
else if (strEQ(s, "INIT")) {
|
|
if (!PL_initav)
|
|
PL_initav = newAV();
|
|
if (PL_main_start && ckWARN(WARN_VOID))
|
|
Perl_warner(aTHX_ WARN_VOID, "Too late to run INIT block");
|
|
av_push(PL_initav, SvREFCNT_inc(cv));
|
|
GvCV(gv) = 0;
|
|
}
|
|
}
|
|
else
|
|
CvANON_on(cv);
|
|
|
|
done:
|
|
return cv;
|
|
}
|
|
|
|
void
|
|
Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block)
|
|
{
|
|
dTHR;
|
|
register CV *cv;
|
|
char *name;
|
|
GV *gv;
|
|
I32 ix;
|
|
STRLEN n_a;
|
|
|
|
if (o)
|
|
name = SvPVx(cSVOPo->op_sv, n_a);
|
|
else
|
|
name = "STDOUT";
|
|
gv = gv_fetchpv(name,TRUE, SVt_PVFM);
|
|
GvMULTI_on(gv);
|
|
if ((cv = GvFORM(gv))) {
|
|
if (ckWARN(WARN_REDEFINE)) {
|
|
line_t oldline = CopLINE(PL_curcop);
|
|
|
|
CopLINE_set(PL_curcop, PL_copline);
|
|
Perl_warner(aTHX_ WARN_REDEFINE, "Format %s redefined",name);
|
|
CopLINE_set(PL_curcop, oldline);
|
|
}
|
|
SvREFCNT_dec(cv);
|
|
}
|
|
cv = PL_compcv;
|
|
GvFORM(gv) = cv;
|
|
CvGV(cv) = (GV*)SvREFCNT_inc(gv);
|
|
CvFILE(cv) = CopFILE(PL_curcop);
|
|
|
|
for (ix = AvFILLp(PL_comppad); ix > 0; ix--) {
|
|
if (!SvPADMY(PL_curpad[ix]) && !SvIMMORTAL(PL_curpad[ix]))
|
|
SvPADTMP_on(PL_curpad[ix]);
|
|
}
|
|
|
|
CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block));
|
|
CvROOT(cv)->op_private |= OPpREFCOUNTED;
|
|
OpREFCNT_set(CvROOT(cv), 1);
|
|
CvSTART(cv) = LINKLIST(CvROOT(cv));
|
|
CvROOT(cv)->op_next = 0;
|
|
peep(CvSTART(cv));
|
|
op_free(o);
|
|
PL_copline = NOLINE;
|
|
LEAVE_SCOPE(floor);
|
|
}
|
|
|
|
OP *
|
|
Perl_newANONLIST(pTHX_ OP *o)
|
|
{
|
|
return newUNOP(OP_REFGEN, 0,
|
|
mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN));
|
|
}
|
|
|
|
OP *
|
|
Perl_newANONHASH(pTHX_ OP *o)
|
|
{
|
|
return newUNOP(OP_REFGEN, 0,
|
|
mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN));
|
|
}
|
|
|
|
OP *
|
|
Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block)
|
|
{
|
|
return newANONATTRSUB(floor, proto, Nullop, block);
|
|
}
|
|
|
|
OP *
|
|
Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block)
|
|
{
|
|
return newUNOP(OP_REFGEN, 0,
|
|
newSVOP(OP_ANONCODE, 0,
|
|
(SV*)newATTRSUB(floor, 0, proto, attrs, block)));
|
|
}
|
|
|
|
OP *
|
|
Perl_oopsAV(pTHX_ OP *o)
|
|
{
|
|
switch (o->op_type) {
|
|
case OP_PADSV:
|
|
o->op_type = OP_PADAV;
|
|
o->op_ppaddr = PL_ppaddr[OP_PADAV];
|
|
return ref(o, OP_RV2AV);
|
|
|
|
case OP_RV2SV:
|
|
o->op_type = OP_RV2AV;
|
|
o->op_ppaddr = PL_ppaddr[OP_RV2AV];
|
|
ref(o, OP_RV2AV);
|
|
break;
|
|
|
|
default:
|
|
if (ckWARN_d(WARN_INTERNAL))
|
|
Perl_warner(aTHX_ WARN_INTERNAL, "oops: oopsAV");
|
|
break;
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_oopsHV(pTHX_ OP *o)
|
|
{
|
|
dTHR;
|
|
|
|
switch (o->op_type) {
|
|
case OP_PADSV:
|
|
case OP_PADAV:
|
|
o->op_type = OP_PADHV;
|
|
o->op_ppaddr = PL_ppaddr[OP_PADHV];
|
|
return ref(o, OP_RV2HV);
|
|
|
|
case OP_RV2SV:
|
|
case OP_RV2AV:
|
|
o->op_type = OP_RV2HV;
|
|
o->op_ppaddr = PL_ppaddr[OP_RV2HV];
|
|
ref(o, OP_RV2HV);
|
|
break;
|
|
|
|
default:
|
|
if (ckWARN_d(WARN_INTERNAL))
|
|
Perl_warner(aTHX_ WARN_INTERNAL, "oops: oopsHV");
|
|
break;
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_newAVREF(pTHX_ OP *o)
|
|
{
|
|
if (o->op_type == OP_PADANY) {
|
|
o->op_type = OP_PADAV;
|
|
o->op_ppaddr = PL_ppaddr[OP_PADAV];
|
|
return o;
|
|
}
|
|
return newUNOP(OP_RV2AV, 0, scalar(o));
|
|
}
|
|
|
|
OP *
|
|
Perl_newGVREF(pTHX_ I32 type, OP *o)
|
|
{
|
|
if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT)
|
|
return newUNOP(OP_NULL, 0, o);
|
|
return ref(newUNOP(OP_RV2GV, OPf_REF, o), type);
|
|
}
|
|
|
|
OP *
|
|
Perl_newHVREF(pTHX_ OP *o)
|
|
{
|
|
if (o->op_type == OP_PADANY) {
|
|
o->op_type = OP_PADHV;
|
|
o->op_ppaddr = PL_ppaddr[OP_PADHV];
|
|
return o;
|
|
}
|
|
return newUNOP(OP_RV2HV, 0, scalar(o));
|
|
}
|
|
|
|
OP *
|
|
Perl_oopsCV(pTHX_ OP *o)
|
|
{
|
|
Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__);
|
|
/* STUB */
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_newCVREF(pTHX_ I32 flags, OP *o)
|
|
{
|
|
return newUNOP(OP_RV2CV, flags, scalar(o));
|
|
}
|
|
|
|
OP *
|
|
Perl_newSVREF(pTHX_ OP *o)
|
|
{
|
|
if (o->op_type == OP_PADANY) {
|
|
o->op_type = OP_PADSV;
|
|
o->op_ppaddr = PL_ppaddr[OP_PADSV];
|
|
return o;
|
|
}
|
|
else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) {
|
|
o->op_flags |= OPpDONE_SVREF;
|
|
return o;
|
|
}
|
|
return newUNOP(OP_RV2SV, 0, scalar(o));
|
|
}
|
|
|
|
/* Check routines. */
|
|
|
|
OP *
|
|
Perl_ck_anoncode(pTHX_ OP *o)
|
|
{
|
|
PADOFFSET ix;
|
|
SV* name;
|
|
|
|
name = NEWSV(1106,0);
|
|
sv_upgrade(name, SVt_PVNV);
|
|
sv_setpvn(name, "&", 1);
|
|
SvIVX(name) = -1;
|
|
SvNVX(name) = 1;
|
|
ix = pad_alloc(o->op_type, SVs_PADMY);
|
|
av_store(PL_comppad_name, ix, name);
|
|
av_store(PL_comppad, ix, cSVOPo->op_sv);
|
|
SvPADMY_on(cSVOPo->op_sv);
|
|
cSVOPo->op_sv = Nullsv;
|
|
cSVOPo->op_targ = ix;
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_bitop(pTHX_ OP *o)
|
|
{
|
|
o->op_private = PL_hints;
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_concat(pTHX_ OP *o)
|
|
{
|
|
if (cUNOPo->op_first->op_type == OP_CONCAT)
|
|
o->op_flags |= OPf_STACKED;
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_spair(pTHX_ OP *o)
|
|
{
|
|
if (o->op_flags & OPf_KIDS) {
|
|
OP* newop;
|
|
OP* kid;
|
|
OPCODE type = o->op_type;
|
|
o = modkids(ck_fun(o), type);
|
|
kid = cUNOPo->op_first;
|
|
newop = kUNOP->op_first->op_sibling;
|
|
if (newop &&
|
|
(newop->op_sibling ||
|
|
!(PL_opargs[newop->op_type] & OA_RETSCALAR) ||
|
|
newop->op_type == OP_PADAV || newop->op_type == OP_PADHV ||
|
|
newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) {
|
|
|
|
return o;
|
|
}
|
|
op_free(kUNOP->op_first);
|
|
kUNOP->op_first = newop;
|
|
}
|
|
o->op_ppaddr = PL_ppaddr[++o->op_type];
|
|
return ck_fun(o);
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_delete(pTHX_ OP *o)
|
|
{
|
|
o = ck_fun(o);
|
|
o->op_private = 0;
|
|
if (o->op_flags & OPf_KIDS) {
|
|
OP *kid = cUNOPo->op_first;
|
|
switch (kid->op_type) {
|
|
case OP_ASLICE:
|
|
o->op_flags |= OPf_SPECIAL;
|
|
/* FALL THROUGH */
|
|
case OP_HSLICE:
|
|
o->op_private |= OPpSLICE;
|
|
break;
|
|
case OP_AELEM:
|
|
o->op_flags |= OPf_SPECIAL;
|
|
/* FALL THROUGH */
|
|
case OP_HELEM:
|
|
break;
|
|
default:
|
|
Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice",
|
|
PL_op_desc[o->op_type]);
|
|
}
|
|
null(kid);
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_eof(pTHX_ OP *o)
|
|
{
|
|
I32 type = o->op_type;
|
|
|
|
if (o->op_flags & OPf_KIDS) {
|
|
if (cLISTOPo->op_first->op_type == OP_STUB) {
|
|
op_free(o);
|
|
o = newUNOP(type, OPf_SPECIAL,
|
|
newGVOP(OP_GV, 0, gv_fetchpv("main::ARGV", TRUE, SVt_PVAV)));
|
|
}
|
|
return ck_fun(o);
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_eval(pTHX_ OP *o)
|
|
{
|
|
PL_hints |= HINT_BLOCK_SCOPE;
|
|
if (o->op_flags & OPf_KIDS) {
|
|
SVOP *kid = (SVOP*)cUNOPo->op_first;
|
|
|
|
if (!kid) {
|
|
o->op_flags &= ~OPf_KIDS;
|
|
null(o);
|
|
}
|
|
else if (kid->op_type == OP_LINESEQ) {
|
|
LOGOP *enter;
|
|
|
|
kid->op_next = o->op_next;
|
|
cUNOPo->op_first = 0;
|
|
op_free(o);
|
|
|
|
NewOp(1101, enter, 1, LOGOP);
|
|
enter->op_type = OP_ENTERTRY;
|
|
enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY];
|
|
enter->op_private = 0;
|
|
|
|
/* establish postfix order */
|
|
enter->op_next = (OP*)enter;
|
|
|
|
o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid);
|
|
o->op_type = OP_LEAVETRY;
|
|
o->op_ppaddr = PL_ppaddr[OP_LEAVETRY];
|
|
enter->op_other = o;
|
|
return o;
|
|
}
|
|
else
|
|
scalar((OP*)kid);
|
|
}
|
|
else {
|
|
op_free(o);
|
|
o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP());
|
|
}
|
|
o->op_targ = (PADOFFSET)PL_hints;
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_exit(pTHX_ OP *o)
|
|
{
|
|
#ifdef VMS
|
|
HV *table = GvHV(PL_hintgv);
|
|
if (table) {
|
|
SV **svp = hv_fetch(table, "vmsish_exit", 11, FALSE);
|
|
if (svp && *svp && SvTRUE(*svp))
|
|
o->op_private |= OPpEXIT_VMSISH;
|
|
}
|
|
#endif
|
|
return ck_fun(o);
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_exec(pTHX_ OP *o)
|
|
{
|
|
OP *kid;
|
|
if (o->op_flags & OPf_STACKED) {
|
|
o = ck_fun(o);
|
|
kid = cUNOPo->op_first->op_sibling;
|
|
if (kid->op_type == OP_RV2GV)
|
|
null(kid);
|
|
}
|
|
else
|
|
o = listkids(o);
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_exists(pTHX_ OP *o)
|
|
{
|
|
o = ck_fun(o);
|
|
if (o->op_flags & OPf_KIDS) {
|
|
OP *kid = cUNOPo->op_first;
|
|
if (kid->op_type == OP_ENTERSUB) {
|
|
(void) ref(kid, o->op_type);
|
|
if (kid->op_type != OP_RV2CV && !PL_error_count)
|
|
Perl_croak(aTHX_ "%s argument is not a subroutine name",
|
|
PL_op_desc[o->op_type]);
|
|
o->op_private |= OPpEXISTS_SUB;
|
|
}
|
|
else if (kid->op_type == OP_AELEM)
|
|
o->op_flags |= OPf_SPECIAL;
|
|
else if (kid->op_type != OP_HELEM)
|
|
Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element",
|
|
PL_op_desc[o->op_type]);
|
|
null(kid);
|
|
}
|
|
return o;
|
|
}
|
|
|
|
#if 0
|
|
OP *
|
|
Perl_ck_gvconst(pTHX_ register OP *o)
|
|
{
|
|
o = fold_constants(o);
|
|
if (o->op_type == OP_CONST)
|
|
o->op_type = OP_GV;
|
|
return o;
|
|
}
|
|
#endif
|
|
|
|
OP *
|
|
Perl_ck_rvconst(pTHX_ register OP *o)
|
|
{
|
|
dTHR;
|
|
SVOP *kid = (SVOP*)cUNOPo->op_first;
|
|
|
|
o->op_private |= (PL_hints & HINT_STRICT_REFS);
|
|
if (kid->op_type == OP_CONST) {
|
|
char *name;
|
|
int iscv;
|
|
GV *gv;
|
|
SV *kidsv = kid->op_sv;
|
|
STRLEN n_a;
|
|
|
|
/* Is it a constant from cv_const_sv()? */
|
|
if (SvROK(kidsv) && SvREADONLY(kidsv)) {
|
|
SV *rsv = SvRV(kidsv);
|
|
int svtype = SvTYPE(rsv);
|
|
char *badtype = Nullch;
|
|
|
|
switch (o->op_type) {
|
|
case OP_RV2SV:
|
|
if (svtype > SVt_PVMG)
|
|
badtype = "a SCALAR";
|
|
break;
|
|
case OP_RV2AV:
|
|
if (svtype != SVt_PVAV)
|
|
badtype = "an ARRAY";
|
|
break;
|
|
case OP_RV2HV:
|
|
if (svtype != SVt_PVHV) {
|
|
if (svtype == SVt_PVAV) { /* pseudohash? */
|
|
SV **ksv = av_fetch((AV*)rsv, 0, FALSE);
|
|
if (ksv && SvROK(*ksv)
|
|
&& SvTYPE(SvRV(*ksv)) == SVt_PVHV)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
badtype = "a HASH";
|
|
}
|
|
break;
|
|
case OP_RV2CV:
|
|
if (svtype != SVt_PVCV)
|
|
badtype = "a CODE";
|
|
break;
|
|
}
|
|
if (badtype)
|
|
Perl_croak(aTHX_ "Constant is not %s reference", badtype);
|
|
return o;
|
|
}
|
|
name = SvPV(kidsv, n_a);
|
|
if ((PL_hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) {
|
|
char *badthing = Nullch;
|
|
switch (o->op_type) {
|
|
case OP_RV2SV:
|
|
badthing = "a SCALAR";
|
|
break;
|
|
case OP_RV2AV:
|
|
badthing = "an ARRAY";
|
|
break;
|
|
case OP_RV2HV:
|
|
badthing = "a HASH";
|
|
break;
|
|
}
|
|
if (badthing)
|
|
Perl_croak(aTHX_
|
|
"Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use",
|
|
name, badthing);
|
|
}
|
|
/*
|
|
* This is a little tricky. We only want to add the symbol if we
|
|
* didn't add it in the lexer. Otherwise we get duplicate strict
|
|
* warnings. But if we didn't add it in the lexer, we must at
|
|
* least pretend like we wanted to add it even if it existed before,
|
|
* or we get possible typo warnings. OPpCONST_ENTERED says
|
|
* whether the lexer already added THIS instance of this symbol.
|
|
*/
|
|
iscv = (o->op_type == OP_RV2CV) * 2;
|
|
do {
|
|
gv = gv_fetchpv(name,
|
|
iscv | !(kid->op_private & OPpCONST_ENTERED),
|
|
iscv
|
|
? SVt_PVCV
|
|
: o->op_type == OP_RV2SV
|
|
? SVt_PV
|
|
: o->op_type == OP_RV2AV
|
|
? SVt_PVAV
|
|
: o->op_type == OP_RV2HV
|
|
? SVt_PVHV
|
|
: SVt_PVGV);
|
|
} while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++);
|
|
if (gv) {
|
|
kid->op_type = OP_GV;
|
|
SvREFCNT_dec(kid->op_sv);
|
|
#ifdef USE_ITHREADS
|
|
/* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */
|
|
kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP);
|
|
GvIN_PAD_on(gv);
|
|
PL_curpad[kPADOP->op_padix] = SvREFCNT_inc(gv);
|
|
#else
|
|
kid->op_sv = SvREFCNT_inc(gv);
|
|
#endif
|
|
kid->op_ppaddr = PL_ppaddr[OP_GV];
|
|
}
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_ftst(pTHX_ OP *o)
|
|
{
|
|
dTHR;
|
|
I32 type = o->op_type;
|
|
|
|
if (o->op_flags & OPf_REF) {
|
|
/* nothing */
|
|
}
|
|
else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) {
|
|
SVOP *kid = (SVOP*)cUNOPo->op_first;
|
|
|
|
if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) {
|
|
STRLEN n_a;
|
|
OP *newop = newGVOP(type, OPf_REF,
|
|
gv_fetchpv(SvPVx(kid->op_sv, n_a), TRUE, SVt_PVIO));
|
|
op_free(o);
|
|
o = newop;
|
|
}
|
|
}
|
|
else {
|
|
op_free(o);
|
|
if (type == OP_FTTTY)
|
|
o = newGVOP(type, OPf_REF, gv_fetchpv("main::STDIN", TRUE,
|
|
SVt_PVIO));
|
|
else
|
|
o = newUNOP(type, 0, newDEFSVOP());
|
|
}
|
|
#ifdef USE_LOCALE
|
|
if (type == OP_FTTEXT || type == OP_FTBINARY) {
|
|
o->op_private = 0;
|
|
if (PL_hints & HINT_LOCALE)
|
|
o->op_private |= OPpLOCALE;
|
|
}
|
|
#endif
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_fun(pTHX_ OP *o)
|
|
{
|
|
dTHR;
|
|
register OP *kid;
|
|
OP **tokid;
|
|
OP *sibl;
|
|
I32 numargs = 0;
|
|
int type = o->op_type;
|
|
register I32 oa = PL_opargs[type] >> OASHIFT;
|
|
|
|
if (o->op_flags & OPf_STACKED) {
|
|
if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL))
|
|
oa &= ~OA_OPTIONAL;
|
|
else
|
|
return no_fh_allowed(o);
|
|
}
|
|
|
|
if (o->op_flags & OPf_KIDS) {
|
|
STRLEN n_a;
|
|
tokid = &cLISTOPo->op_first;
|
|
kid = cLISTOPo->op_first;
|
|
if (kid->op_type == OP_PUSHMARK ||
|
|
(kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK))
|
|
{
|
|
tokid = &kid->op_sibling;
|
|
kid = kid->op_sibling;
|
|
}
|
|
if (!kid && PL_opargs[type] & OA_DEFGV)
|
|
*tokid = kid = newDEFSVOP();
|
|
|
|
while (oa && kid) {
|
|
numargs++;
|
|
sibl = kid->op_sibling;
|
|
switch (oa & 7) {
|
|
case OA_SCALAR:
|
|
/* list seen where single (scalar) arg expected? */
|
|
if (numargs == 1 && !(oa >> 4)
|
|
&& kid->op_type == OP_LIST && type != OP_SCALAR)
|
|
{
|
|
return too_many_arguments(o,PL_op_desc[type]);
|
|
}
|
|
scalar(kid);
|
|
break;
|
|
case OA_LIST:
|
|
if (oa < 16) {
|
|
kid = 0;
|
|
continue;
|
|
}
|
|
else
|
|
list(kid);
|
|
break;
|
|
case OA_AVREF:
|
|
if (kid->op_type == OP_CONST &&
|
|
(kid->op_private & OPpCONST_BARE))
|
|
{
|
|
char *name = SvPVx(((SVOP*)kid)->op_sv, n_a);
|
|
OP *newop = newAVREF(newGVOP(OP_GV, 0,
|
|
gv_fetchpv(name, TRUE, SVt_PVAV) ));
|
|
if (ckWARN(WARN_DEPRECATED))
|
|
Perl_warner(aTHX_ WARN_DEPRECATED,
|
|
"Array @%s missing the @ in argument %"IVdf" of %s()",
|
|
name, (IV)numargs, PL_op_desc[type]);
|
|
op_free(kid);
|
|
kid = newop;
|
|
kid->op_sibling = sibl;
|
|
*tokid = kid;
|
|
}
|
|
else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV)
|
|
bad_type(numargs, "array", PL_op_desc[type], kid);
|
|
mod(kid, type);
|
|
break;
|
|
case OA_HVREF:
|
|
if (kid->op_type == OP_CONST &&
|
|
(kid->op_private & OPpCONST_BARE))
|
|
{
|
|
char *name = SvPVx(((SVOP*)kid)->op_sv, n_a);
|
|
OP *newop = newHVREF(newGVOP(OP_GV, 0,
|
|
gv_fetchpv(name, TRUE, SVt_PVHV) ));
|
|
if (ckWARN(WARN_DEPRECATED))
|
|
Perl_warner(aTHX_ WARN_DEPRECATED,
|
|
"Hash %%%s missing the %% in argument %"IVdf" of %s()",
|
|
name, (IV)numargs, PL_op_desc[type]);
|
|
op_free(kid);
|
|
kid = newop;
|
|
kid->op_sibling = sibl;
|
|
*tokid = kid;
|
|
}
|
|
else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV)
|
|
bad_type(numargs, "hash", PL_op_desc[type], kid);
|
|
mod(kid, type);
|
|
break;
|
|
case OA_CVREF:
|
|
{
|
|
OP *newop = newUNOP(OP_NULL, 0, kid);
|
|
kid->op_sibling = 0;
|
|
linklist(kid);
|
|
newop->op_next = newop;
|
|
kid = newop;
|
|
kid->op_sibling = sibl;
|
|
*tokid = kid;
|
|
}
|
|
break;
|
|
case OA_FILEREF:
|
|
if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) {
|
|
if (kid->op_type == OP_CONST &&
|
|
(kid->op_private & OPpCONST_BARE))
|
|
{
|
|
OP *newop = newGVOP(OP_GV, 0,
|
|
gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, n_a), TRUE,
|
|
SVt_PVIO) );
|
|
op_free(kid);
|
|
kid = newop;
|
|
}
|
|
else if (kid->op_type == OP_READLINE) {
|
|
/* neophyte patrol: open(<FH>), close(<FH>) etc. */
|
|
bad_type(numargs, "HANDLE", PL_op_desc[o->op_type], kid);
|
|
}
|
|
else {
|
|
I32 flags = OPf_SPECIAL;
|
|
I32 priv = 0;
|
|
PADOFFSET targ = 0;
|
|
|
|
/* is this op a FH constructor? */
|
|
if (is_handle_constructor(o,numargs)) {
|
|
char *name = Nullch;
|
|
STRLEN len;
|
|
|
|
flags = 0;
|
|
/* Set a flag to tell rv2gv to vivify
|
|
* need to "prove" flag does not mean something
|
|
* else already - NI-S 1999/05/07
|
|
*/
|
|
priv = OPpDEREF;
|
|
if (kid->op_type == OP_PADSV) {
|
|
SV **namep = av_fetch(PL_comppad_name,
|
|
kid->op_targ, 4);
|
|
if (namep && *namep)
|
|
name = SvPV(*namep, len);
|
|
}
|
|
else if (kid->op_type == OP_RV2SV
|
|
&& kUNOP->op_first->op_type == OP_GV)
|
|
{
|
|
GV *gv = cGVOPx_gv(kUNOP->op_first);
|
|
name = GvNAME(gv);
|
|
len = GvNAMELEN(gv);
|
|
}
|
|
else if (kid->op_type == OP_AELEM
|
|
|| kid->op_type == OP_HELEM)
|
|
{
|
|
name = "__ANONIO__";
|
|
len = 10;
|
|
mod(kid,type);
|
|
}
|
|
if (name) {
|
|
SV *namesv;
|
|
targ = pad_alloc(OP_RV2GV, SVs_PADTMP);
|
|
namesv = PL_curpad[targ];
|
|
(void)SvUPGRADE(namesv, SVt_PV);
|
|
if (*name != '$')
|
|
sv_setpvn(namesv, "$", 1);
|
|
sv_catpvn(namesv, name, len);
|
|
}
|
|
}
|
|
kid->op_sibling = 0;
|
|
kid = newUNOP(OP_RV2GV, flags, scalar(kid));
|
|
kid->op_targ = targ;
|
|
kid->op_private |= priv;
|
|
}
|
|
kid->op_sibling = sibl;
|
|
*tokid = kid;
|
|
}
|
|
scalar(kid);
|
|
break;
|
|
case OA_SCALARREF:
|
|
mod(scalar(kid), type);
|
|
break;
|
|
}
|
|
oa >>= 4;
|
|
tokid = &kid->op_sibling;
|
|
kid = kid->op_sibling;
|
|
}
|
|
o->op_private |= numargs;
|
|
if (kid)
|
|
return too_many_arguments(o,PL_op_desc[o->op_type]);
|
|
listkids(o);
|
|
}
|
|
else if (PL_opargs[type] & OA_DEFGV) {
|
|
op_free(o);
|
|
return newUNOP(type, 0, newDEFSVOP());
|
|
}
|
|
|
|
if (oa) {
|
|
while (oa & OA_OPTIONAL)
|
|
oa >>= 4;
|
|
if (oa && oa != OA_LIST)
|
|
return too_few_arguments(o,PL_op_desc[o->op_type]);
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_glob(pTHX_ OP *o)
|
|
{
|
|
GV *gv;
|
|
|
|
o = ck_fun(o);
|
|
if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling)
|
|
append_elem(OP_GLOB, o, newDEFSVOP());
|
|
|
|
if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) && GvIMPORTED_CV(gv)))
|
|
gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV);
|
|
|
|
#if !defined(PERL_EXTERNAL_GLOB)
|
|
/* XXX this can be tightened up and made more failsafe. */
|
|
if (!gv) {
|
|
ENTER;
|
|
Perl_load_module(aTHX_ 0, newSVpvn("File::Glob", 10), Nullsv,
|
|
/* null-terminated import list */
|
|
newSVpvn(":globally", 9), Nullsv);
|
|
gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV);
|
|
LEAVE;
|
|
}
|
|
#endif /* PERL_EXTERNAL_GLOB */
|
|
|
|
if (gv && GvIMPORTED_CV(gv)) {
|
|
append_elem(OP_GLOB, o,
|
|
newSVOP(OP_CONST, 0, newSViv(PL_glob_index++)));
|
|
o->op_type = OP_LIST;
|
|
o->op_ppaddr = PL_ppaddr[OP_LIST];
|
|
cLISTOPo->op_first->op_type = OP_PUSHMARK;
|
|
cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK];
|
|
o = newUNOP(OP_ENTERSUB, OPf_STACKED,
|
|
append_elem(OP_LIST, o,
|
|
scalar(newUNOP(OP_RV2CV, 0,
|
|
newGVOP(OP_GV, 0, gv)))));
|
|
o = newUNOP(OP_NULL, 0, ck_subr(o));
|
|
o->op_targ = OP_GLOB; /* hint at what it used to be */
|
|
return o;
|
|
}
|
|
gv = newGVgen("main");
|
|
gv_IOadd(gv);
|
|
append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv));
|
|
scalarkids(o);
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_grep(pTHX_ OP *o)
|
|
{
|
|
LOGOP *gwop;
|
|
OP *kid;
|
|
OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE;
|
|
|
|
o->op_ppaddr = PL_ppaddr[OP_GREPSTART];
|
|
NewOp(1101, gwop, 1, LOGOP);
|
|
|
|
if (o->op_flags & OPf_STACKED) {
|
|
OP* k;
|
|
o = ck_sort(o);
|
|
kid = cLISTOPo->op_first->op_sibling;
|
|
for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) {
|
|
kid = k;
|
|
}
|
|
kid->op_next = (OP*)gwop;
|
|
o->op_flags &= ~OPf_STACKED;
|
|
}
|
|
kid = cLISTOPo->op_first->op_sibling;
|
|
if (type == OP_MAPWHILE)
|
|
list(kid);
|
|
else
|
|
scalar(kid);
|
|
o = ck_fun(o);
|
|
if (PL_error_count)
|
|
return o;
|
|
kid = cLISTOPo->op_first->op_sibling;
|
|
if (kid->op_type != OP_NULL)
|
|
Perl_croak(aTHX_ "panic: ck_grep");
|
|
kid = kUNOP->op_first;
|
|
|
|
gwop->op_type = type;
|
|
gwop->op_ppaddr = PL_ppaddr[type];
|
|
gwop->op_first = listkids(o);
|
|
gwop->op_flags |= OPf_KIDS;
|
|
gwop->op_private = 1;
|
|
gwop->op_other = LINKLIST(kid);
|
|
gwop->op_targ = pad_alloc(type, SVs_PADTMP);
|
|
kid->op_next = (OP*)gwop;
|
|
|
|
kid = cLISTOPo->op_first->op_sibling;
|
|
if (!kid || !kid->op_sibling)
|
|
return too_few_arguments(o,PL_op_desc[o->op_type]);
|
|
for (kid = kid->op_sibling; kid; kid = kid->op_sibling)
|
|
mod(kid, OP_GREPSTART);
|
|
|
|
return (OP*)gwop;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_index(pTHX_ OP *o)
|
|
{
|
|
if (o->op_flags & OPf_KIDS) {
|
|
OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */
|
|
if (kid)
|
|
kid = kid->op_sibling; /* get past "big" */
|
|
if (kid && kid->op_type == OP_CONST)
|
|
fbm_compile(((SVOP*)kid)->op_sv, 0);
|
|
}
|
|
return ck_fun(o);
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_lengthconst(pTHX_ OP *o)
|
|
{
|
|
/* XXX length optimization goes here */
|
|
return ck_fun(o);
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_lfun(pTHX_ OP *o)
|
|
{
|
|
OPCODE type = o->op_type;
|
|
return modkids(ck_fun(o), type);
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */
|
|
{
|
|
dTHR;
|
|
if ((o->op_flags & OPf_KIDS) && ckWARN(WARN_DEPRECATED)) {
|
|
switch (cUNOPo->op_first->op_type) {
|
|
case OP_RV2AV:
|
|
break; /* Globals via GV can be undef */
|
|
case OP_PADAV:
|
|
case OP_AASSIGN: /* Is this a good idea? */
|
|
Perl_warner(aTHX_ WARN_DEPRECATED,
|
|
"defined(@array) is deprecated");
|
|
Perl_warner(aTHX_ WARN_DEPRECATED,
|
|
"\t(Maybe you should just omit the defined()?)\n");
|
|
break;
|
|
case OP_RV2HV:
|
|
break; /* Globals via GV can be undef */
|
|
case OP_PADHV:
|
|
Perl_warner(aTHX_ WARN_DEPRECATED,
|
|
"defined(%%hash) is deprecated");
|
|
Perl_warner(aTHX_ WARN_DEPRECATED,
|
|
"\t(Maybe you should just omit the defined()?)\n");
|
|
break;
|
|
default:
|
|
/* no warning */
|
|
break;
|
|
}
|
|
}
|
|
return ck_rfun(o);
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_rfun(pTHX_ OP *o)
|
|
{
|
|
OPCODE type = o->op_type;
|
|
return refkids(ck_fun(o), type);
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_listiob(pTHX_ OP *o)
|
|
{
|
|
register OP *kid;
|
|
|
|
kid = cLISTOPo->op_first;
|
|
if (!kid) {
|
|
o = force_list(o);
|
|
kid = cLISTOPo->op_first;
|
|
}
|
|
if (kid->op_type == OP_PUSHMARK)
|
|
kid = kid->op_sibling;
|
|
if (kid && o->op_flags & OPf_STACKED)
|
|
kid = kid->op_sibling;
|
|
else if (kid && !kid->op_sibling) { /* print HANDLE; */
|
|
if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) {
|
|
o->op_flags |= OPf_STACKED; /* make it a filehandle */
|
|
kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid));
|
|
cLISTOPo->op_first->op_sibling = kid;
|
|
cLISTOPo->op_last = kid;
|
|
kid = kid->op_sibling;
|
|
}
|
|
}
|
|
|
|
if (!kid)
|
|
append_elem(o->op_type, o, newDEFSVOP());
|
|
|
|
o = listkids(o);
|
|
|
|
o->op_private = 0;
|
|
#ifdef USE_LOCALE
|
|
if (PL_hints & HINT_LOCALE)
|
|
o->op_private |= OPpLOCALE;
|
|
#endif
|
|
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_fun_locale(pTHX_ OP *o)
|
|
{
|
|
o = ck_fun(o);
|
|
|
|
o->op_private = 0;
|
|
#ifdef USE_LOCALE
|
|
if (PL_hints & HINT_LOCALE)
|
|
o->op_private |= OPpLOCALE;
|
|
#endif
|
|
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_sassign(pTHX_ OP *o)
|
|
{
|
|
OP *kid = cLISTOPo->op_first;
|
|
/* has a disposable target? */
|
|
if ((PL_opargs[kid->op_type] & OA_TARGLEX)
|
|
&& !(kid->op_flags & OPf_STACKED)
|
|
/* Cannot steal the second time! */
|
|
&& !(kid->op_private & OPpTARGET_MY))
|
|
{
|
|
OP *kkid = kid->op_sibling;
|
|
|
|
/* Can just relocate the target. */
|
|
if (kkid && kkid->op_type == OP_PADSV
|
|
&& !(kkid->op_private & OPpLVAL_INTRO))
|
|
{
|
|
kid->op_targ = kkid->op_targ;
|
|
kkid->op_targ = 0;
|
|
/* Now we do not need PADSV and SASSIGN. */
|
|
kid->op_sibling = o->op_sibling; /* NULL */
|
|
cLISTOPo->op_first = NULL;
|
|
op_free(o);
|
|
op_free(kkid);
|
|
kid->op_private |= OPpTARGET_MY; /* Used for context settings */
|
|
return kid;
|
|
}
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_scmp(pTHX_ OP *o)
|
|
{
|
|
o->op_private = 0;
|
|
#ifdef USE_LOCALE
|
|
if (PL_hints & HINT_LOCALE)
|
|
o->op_private |= OPpLOCALE;
|
|
#endif
|
|
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_match(pTHX_ OP *o)
|
|
{
|
|
o->op_private |= OPpRUNTIME;
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_method(pTHX_ OP *o)
|
|
{
|
|
OP *kid = cUNOPo->op_first;
|
|
if (kid->op_type == OP_CONST) {
|
|
SV* sv = kSVOP->op_sv;
|
|
if (!(strchr(SvPVX(sv), ':') || strchr(SvPVX(sv), '\''))) {
|
|
OP *cmop;
|
|
(void)SvUPGRADE(sv, SVt_PVIV);
|
|
(void)SvIOK_on(sv);
|
|
PERL_HASH(SvUVX(sv), SvPVX(sv), SvCUR(sv));
|
|
cmop = newSVOP(OP_METHOD_NAMED, 0, sv);
|
|
kSVOP->op_sv = Nullsv;
|
|
op_free(o);
|
|
return cmop;
|
|
}
|
|
}
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_null(pTHX_ OP *o)
|
|
{
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_open(pTHX_ OP *o)
|
|
{
|
|
HV *table = GvHV(PL_hintgv);
|
|
if (table) {
|
|
SV **svp;
|
|
I32 mode;
|
|
svp = hv_fetch(table, "open_IN", 7, FALSE);
|
|
if (svp && *svp) {
|
|
mode = mode_from_discipline(*svp);
|
|
if (mode & O_BINARY)
|
|
o->op_private |= OPpOPEN_IN_RAW;
|
|
else if (mode & O_TEXT)
|
|
o->op_private |= OPpOPEN_IN_CRLF;
|
|
}
|
|
|
|
svp = hv_fetch(table, "open_OUT", 8, FALSE);
|
|
if (svp && *svp) {
|
|
mode = mode_from_discipline(*svp);
|
|
if (mode & O_BINARY)
|
|
o->op_private |= OPpOPEN_OUT_RAW;
|
|
else if (mode & O_TEXT)
|
|
o->op_private |= OPpOPEN_OUT_CRLF;
|
|
}
|
|
}
|
|
if (o->op_type == OP_BACKTICK)
|
|
return o;
|
|
return ck_fun(o);
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_repeat(pTHX_ OP *o)
|
|
{
|
|
if (cBINOPo->op_first->op_flags & OPf_PARENS) {
|
|
o->op_private |= OPpREPEAT_DOLIST;
|
|
cBINOPo->op_first = force_list(cBINOPo->op_first);
|
|
}
|
|
else
|
|
scalar(o);
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_require(pTHX_ OP *o)
|
|
{
|
|
if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */
|
|
SVOP *kid = (SVOP*)cUNOPo->op_first;
|
|
|
|
if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) {
|
|
char *s;
|
|
for (s = SvPVX(kid->op_sv); *s; s++) {
|
|
if (*s == ':' && s[1] == ':') {
|
|
*s = '/';
|
|
Move(s+2, s+1, strlen(s+2)+1, char);
|
|
--SvCUR(kid->op_sv);
|
|
}
|
|
}
|
|
if (SvREADONLY(kid->op_sv)) {
|
|
SvREADONLY_off(kid->op_sv);
|
|
sv_catpvn(kid->op_sv, ".pm", 3);
|
|
SvREADONLY_on(kid->op_sv);
|
|
}
|
|
else
|
|
sv_catpvn(kid->op_sv, ".pm", 3);
|
|
}
|
|
}
|
|
return ck_fun(o);
|
|
}
|
|
|
|
#if 0
|
|
OP *
|
|
Perl_ck_retarget(pTHX_ OP *o)
|
|
{
|
|
Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__);
|
|
/* STUB */
|
|
return o;
|
|
}
|
|
#endif
|
|
|
|
OP *
|
|
Perl_ck_select(pTHX_ OP *o)
|
|
{
|
|
OP* kid;
|
|
if (o->op_flags & OPf_KIDS) {
|
|
kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */
|
|
if (kid && kid->op_sibling) {
|
|
o->op_type = OP_SSELECT;
|
|
o->op_ppaddr = PL_ppaddr[OP_SSELECT];
|
|
o = ck_fun(o);
|
|
return fold_constants(o);
|
|
}
|
|
}
|
|
o = ck_fun(o);
|
|
kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */
|
|
if (kid && kid->op_type == OP_RV2GV)
|
|
kid->op_private &= ~HINT_STRICT_REFS;
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_shift(pTHX_ OP *o)
|
|
{
|
|
I32 type = o->op_type;
|
|
|
|
if (!(o->op_flags & OPf_KIDS)) {
|
|
OP *argop;
|
|
|
|
op_free(o);
|
|
#ifdef USE_THREADS
|
|
if (!CvUNIQUE(PL_compcv)) {
|
|
argop = newOP(OP_PADAV, OPf_REF);
|
|
argop->op_targ = 0; /* PL_curpad[0] is @_ */
|
|
}
|
|
else {
|
|
argop = newUNOP(OP_RV2AV, 0,
|
|
scalar(newGVOP(OP_GV, 0,
|
|
gv_fetchpv("ARGV", TRUE, SVt_PVAV))));
|
|
}
|
|
#else
|
|
argop = newUNOP(OP_RV2AV, 0,
|
|
scalar(newGVOP(OP_GV, 0, !CvUNIQUE(PL_compcv) ?
|
|
PL_defgv : gv_fetchpv("ARGV", TRUE, SVt_PVAV))));
|
|
#endif /* USE_THREADS */
|
|
return newUNOP(type, 0, scalar(argop));
|
|
}
|
|
return scalar(modkids(ck_fun(o), type));
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_sort(pTHX_ OP *o)
|
|
{
|
|
o->op_private = 0;
|
|
#ifdef USE_LOCALE
|
|
if (PL_hints & HINT_LOCALE)
|
|
o->op_private |= OPpLOCALE;
|
|
#endif
|
|
|
|
if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED)
|
|
simplify_sort(o);
|
|
if (o->op_flags & OPf_STACKED) { /* may have been cleared */
|
|
OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */
|
|
OP *k;
|
|
kid = kUNOP->op_first; /* get past null */
|
|
|
|
if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) {
|
|
linklist(kid);
|
|
if (kid->op_type == OP_SCOPE) {
|
|
k = kid->op_next;
|
|
kid->op_next = 0;
|
|
}
|
|
else if (kid->op_type == OP_LEAVE) {
|
|
if (o->op_type == OP_SORT) {
|
|
null(kid); /* wipe out leave */
|
|
kid->op_next = kid;
|
|
|
|
for (k = kLISTOP->op_first->op_next; k; k = k->op_next) {
|
|
if (k->op_next == kid)
|
|
k->op_next = 0;
|
|
/* don't descend into loops */
|
|
else if (k->op_type == OP_ENTERLOOP
|
|
|| k->op_type == OP_ENTERITER)
|
|
{
|
|
k = cLOOPx(k)->op_lastop;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
kid->op_next = 0; /* just disconnect the leave */
|
|
k = kLISTOP->op_first;
|
|
}
|
|
peep(k);
|
|
|
|
kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */
|
|
if (o->op_type == OP_SORT)
|
|
kid->op_next = kid;
|
|
else
|
|
kid->op_next = k;
|
|
o->op_flags |= OPf_SPECIAL;
|
|
}
|
|
else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV)
|
|
null(cLISTOPo->op_first->op_sibling);
|
|
}
|
|
|
|
return o;
|
|
}
|
|
|
|
STATIC void
|
|
S_simplify_sort(pTHX_ OP *o)
|
|
{
|
|
dTHR;
|
|
register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */
|
|
OP *k;
|
|
int reversed;
|
|
GV *gv;
|
|
if (!(o->op_flags & OPf_STACKED))
|
|
return;
|
|
GvMULTI_on(gv_fetchpv("a", TRUE, SVt_PV));
|
|
GvMULTI_on(gv_fetchpv("b", TRUE, SVt_PV));
|
|
kid = kUNOP->op_first; /* get past null */
|
|
if (kid->op_type != OP_SCOPE)
|
|
return;
|
|
kid = kLISTOP->op_last; /* get past scope */
|
|
switch(kid->op_type) {
|
|
case OP_NCMP:
|
|
case OP_I_NCMP:
|
|
case OP_SCMP:
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
k = kid; /* remember this node*/
|
|
if (kBINOP->op_first->op_type != OP_RV2SV)
|
|
return;
|
|
kid = kBINOP->op_first; /* get past cmp */
|
|
if (kUNOP->op_first->op_type != OP_GV)
|
|
return;
|
|
kid = kUNOP->op_first; /* get past rv2sv */
|
|
gv = kGVOP_gv;
|
|
if (GvSTASH(gv) != PL_curstash)
|
|
return;
|
|
if (strEQ(GvNAME(gv), "a"))
|
|
reversed = 0;
|
|
else if (strEQ(GvNAME(gv), "b"))
|
|
reversed = 1;
|
|
else
|
|
return;
|
|
kid = k; /* back to cmp */
|
|
if (kBINOP->op_last->op_type != OP_RV2SV)
|
|
return;
|
|
kid = kBINOP->op_last; /* down to 2nd arg */
|
|
if (kUNOP->op_first->op_type != OP_GV)
|
|
return;
|
|
kid = kUNOP->op_first; /* get past rv2sv */
|
|
gv = kGVOP_gv;
|
|
if (GvSTASH(gv) != PL_curstash
|
|
|| ( reversed
|
|
? strNE(GvNAME(gv), "a")
|
|
: strNE(GvNAME(gv), "b")))
|
|
return;
|
|
o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL);
|
|
if (reversed)
|
|
o->op_private |= OPpSORT_REVERSE;
|
|
if (k->op_type == OP_NCMP)
|
|
o->op_private |= OPpSORT_NUMERIC;
|
|
if (k->op_type == OP_I_NCMP)
|
|
o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER;
|
|
kid = cLISTOPo->op_first->op_sibling;
|
|
cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */
|
|
op_free(kid); /* then delete it */
|
|
cLISTOPo->op_children--;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_split(pTHX_ OP *o)
|
|
{
|
|
register OP *kid;
|
|
|
|
if (o->op_flags & OPf_STACKED)
|
|
return no_fh_allowed(o);
|
|
|
|
kid = cLISTOPo->op_first;
|
|
if (kid->op_type != OP_NULL)
|
|
Perl_croak(aTHX_ "panic: ck_split");
|
|
kid = kid->op_sibling;
|
|
op_free(cLISTOPo->op_first);
|
|
cLISTOPo->op_first = kid;
|
|
if (!kid) {
|
|
cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvn(" ", 1));
|
|
cLISTOPo->op_last = kid; /* There was only one element previously */
|
|
}
|
|
|
|
if (kid->op_type != OP_MATCH) {
|
|
OP *sibl = kid->op_sibling;
|
|
kid->op_sibling = 0;
|
|
kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop);
|
|
if (cLISTOPo->op_first == cLISTOPo->op_last)
|
|
cLISTOPo->op_last = kid;
|
|
cLISTOPo->op_first = kid;
|
|
kid->op_sibling = sibl;
|
|
}
|
|
|
|
kid->op_type = OP_PUSHRE;
|
|
kid->op_ppaddr = PL_ppaddr[OP_PUSHRE];
|
|
scalar(kid);
|
|
|
|
if (!kid->op_sibling)
|
|
append_elem(OP_SPLIT, o, newDEFSVOP());
|
|
|
|
kid = kid->op_sibling;
|
|
scalar(kid);
|
|
|
|
if (!kid->op_sibling)
|
|
append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0)));
|
|
|
|
kid = kid->op_sibling;
|
|
scalar(kid);
|
|
|
|
if (kid->op_sibling)
|
|
return too_many_arguments(o,PL_op_desc[o->op_type]);
|
|
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_join(pTHX_ OP *o)
|
|
{
|
|
if (ckWARN(WARN_SYNTAX)) {
|
|
OP *kid = cLISTOPo->op_first->op_sibling;
|
|
if (kid && kid->op_type == OP_MATCH) {
|
|
char *pmstr = "STRING";
|
|
if (kPMOP->op_pmregexp)
|
|
pmstr = kPMOP->op_pmregexp->precomp;
|
|
Perl_warner(aTHX_ WARN_SYNTAX,
|
|
"/%s/ should probably be written as \"%s\"",
|
|
pmstr, pmstr);
|
|
}
|
|
}
|
|
return ck_fun(o);
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_subr(pTHX_ OP *o)
|
|
{
|
|
dTHR;
|
|
OP *prev = ((cUNOPo->op_first->op_sibling)
|
|
? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first;
|
|
OP *o2 = prev->op_sibling;
|
|
OP *cvop;
|
|
char *proto = 0;
|
|
CV *cv = 0;
|
|
GV *namegv = 0;
|
|
int optional = 0;
|
|
I32 arg = 0;
|
|
STRLEN n_a;
|
|
|
|
o->op_private |= OPpENTERSUB_HASTARG;
|
|
for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ;
|
|
if (cvop->op_type == OP_RV2CV) {
|
|
SVOP* tmpop;
|
|
o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER);
|
|
null(cvop); /* disable rv2cv */
|
|
tmpop = (SVOP*)((UNOP*)cvop)->op_first;
|
|
if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) {
|
|
GV *gv = cGVOPx_gv(tmpop);
|
|
cv = GvCVu(gv);
|
|
if (!cv)
|
|
tmpop->op_private |= OPpEARLY_CV;
|
|
else if (SvPOK(cv)) {
|
|
namegv = CvANON(cv) ? gv : CvGV(cv);
|
|
proto = SvPV((SV*)cv, n_a);
|
|
}
|
|
}
|
|
}
|
|
else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) {
|
|
if (o2->op_type == OP_CONST)
|
|
o2->op_private &= ~OPpCONST_STRICT;
|
|
else if (o2->op_type == OP_LIST) {
|
|
OP *o = ((UNOP*)o2)->op_first->op_sibling;
|
|
if (o && o->op_type == OP_CONST)
|
|
o->op_private &= ~OPpCONST_STRICT;
|
|
}
|
|
}
|
|
o->op_private |= (PL_hints & HINT_STRICT_REFS);
|
|
if (PERLDB_SUB && PL_curstash != PL_debstash)
|
|
o->op_private |= OPpENTERSUB_DB;
|
|
while (o2 != cvop) {
|
|
if (proto) {
|
|
switch (*proto) {
|
|
case '\0':
|
|
return too_many_arguments(o, gv_ename(namegv));
|
|
case ';':
|
|
optional = 1;
|
|
proto++;
|
|
continue;
|
|
case '$':
|
|
proto++;
|
|
arg++;
|
|
scalar(o2);
|
|
break;
|
|
case '%':
|
|
case '@':
|
|
list(o2);
|
|
arg++;
|
|
break;
|
|
case '&':
|
|
proto++;
|
|
arg++;
|
|
if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF)
|
|
bad_type(arg, "block", gv_ename(namegv), o2);
|
|
break;
|
|
case '*':
|
|
/* '*' allows any scalar type, including bareword */
|
|
proto++;
|
|
arg++;
|
|
if (o2->op_type == OP_RV2GV)
|
|
goto wrapref; /* autoconvert GLOB -> GLOBref */
|
|
else if (o2->op_type == OP_CONST)
|
|
o2->op_private &= ~OPpCONST_STRICT;
|
|
else if (o2->op_type == OP_ENTERSUB) {
|
|
/* accidental subroutine, revert to bareword */
|
|
OP *gvop = ((UNOP*)o2)->op_first;
|
|
if (gvop && gvop->op_type == OP_NULL) {
|
|
gvop = ((UNOP*)gvop)->op_first;
|
|
if (gvop) {
|
|
for (; gvop->op_sibling; gvop = gvop->op_sibling)
|
|
;
|
|
if (gvop &&
|
|
(gvop->op_private & OPpENTERSUB_NOPAREN) &&
|
|
(gvop = ((UNOP*)gvop)->op_first) &&
|
|
gvop->op_type == OP_GV)
|
|
{
|
|
GV *gv = cGVOPx_gv(gvop);
|
|
OP *sibling = o2->op_sibling;
|
|
SV *n = newSVpvn("",0);
|
|
op_free(o2);
|
|
gv_fullname3(n, gv, "");
|
|
if (SvCUR(n)>6 && strnEQ(SvPVX(n),"main::",6))
|
|
sv_chop(n, SvPVX(n)+6);
|
|
o2 = newSVOP(OP_CONST, 0, n);
|
|
prev->op_sibling = o2;
|
|
o2->op_sibling = sibling;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
scalar(o2);
|
|
break;
|
|
case '\\':
|
|
proto++;
|
|
arg++;
|
|
switch (*proto++) {
|
|
case '*':
|
|
if (o2->op_type != OP_RV2GV)
|
|
bad_type(arg, "symbol", gv_ename(namegv), o2);
|
|
goto wrapref;
|
|
case '&':
|
|
if (o2->op_type != OP_RV2CV)
|
|
bad_type(arg, "sub", gv_ename(namegv), o2);
|
|
goto wrapref;
|
|
case '$':
|
|
if (o2->op_type != OP_RV2SV
|
|
&& o2->op_type != OP_PADSV
|
|
&& o2->op_type != OP_HELEM
|
|
&& o2->op_type != OP_AELEM
|
|
&& o2->op_type != OP_THREADSV)
|
|
{
|
|
bad_type(arg, "scalar", gv_ename(namegv), o2);
|
|
}
|
|
goto wrapref;
|
|
case '@':
|
|
if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV)
|
|
bad_type(arg, "array", gv_ename(namegv), o2);
|
|
goto wrapref;
|
|
case '%':
|
|
if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV)
|
|
bad_type(arg, "hash", gv_ename(namegv), o2);
|
|
wrapref:
|
|
{
|
|
OP* kid = o2;
|
|
OP* sib = kid->op_sibling;
|
|
kid->op_sibling = 0;
|
|
o2 = newUNOP(OP_REFGEN, 0, kid);
|
|
o2->op_sibling = sib;
|
|
prev->op_sibling = o2;
|
|
}
|
|
break;
|
|
default: goto oops;
|
|
}
|
|
break;
|
|
case ' ':
|
|
proto++;
|
|
continue;
|
|
default:
|
|
oops:
|
|
Perl_croak(aTHX_ "Malformed prototype for %s: %s",
|
|
gv_ename(namegv), SvPV((SV*)cv, n_a));
|
|
}
|
|
}
|
|
else
|
|
list(o2);
|
|
mod(o2, OP_ENTERSUB);
|
|
prev = o2;
|
|
o2 = o2->op_sibling;
|
|
}
|
|
if (proto && !optional &&
|
|
(*proto && *proto != '@' && *proto != '%' && *proto != ';'))
|
|
return too_few_arguments(o, gv_ename(namegv));
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_svconst(pTHX_ OP *o)
|
|
{
|
|
SvREADONLY_on(cSVOPo->op_sv);
|
|
return o;
|
|
}
|
|
|
|
OP *
|
|
Perl_ck_trunc(pTHX_ OP *o)
|
|
{
|
|
if (o->op_flags & OPf_KIDS) {
|
|
SVOP *kid = (SVOP*)cUNOPo->op_first;
|
|
|
|
if (kid->op_type == OP_NULL)
|
|
kid = (SVOP*)kid->op_sibling;
|
|
if (kid && kid->op_type == OP_CONST &&
|
|
(kid->op_private & OPpCONST_BARE))
|
|
{
|
|
o->op_flags |= OPf_SPECIAL;
|
|
kid->op_private &= ~OPpCONST_STRICT;
|
|
}
|
|
}
|
|
return ck_fun(o);
|
|
}
|
|
|
|
/* A peephole optimizer. We visit the ops in the order they're to execute. */
|
|
|
|
void
|
|
Perl_peep(pTHX_ register OP *o)
|
|
{
|
|
dTHR;
|
|
register OP* oldop = 0;
|
|
STRLEN n_a;
|
|
OP *last_composite = Nullop;
|
|
|
|
if (!o || o->op_seq)
|
|
return;
|
|
ENTER;
|
|
SAVEOP();
|
|
SAVEVPTR(PL_curcop);
|
|
for (; o; o = o->op_next) {
|
|
if (o->op_seq)
|
|
break;
|
|
if (!PL_op_seqmax)
|
|
PL_op_seqmax++;
|
|
PL_op = o;
|
|
switch (o->op_type) {
|
|
case OP_SETSTATE:
|
|
case OP_NEXTSTATE:
|
|
case OP_DBSTATE:
|
|
PL_curcop = ((COP*)o); /* for warnings */
|
|
o->op_seq = PL_op_seqmax++;
|
|
last_composite = Nullop;
|
|
break;
|
|
|
|
case OP_CONST:
|
|
if (cSVOPo->op_private & OPpCONST_STRICT)
|
|
no_bareword_allowed(o);
|
|
#ifdef USE_ITHREADS
|
|
/* Relocate sv to the pad for thread safety.
|
|
* Despite being a "constant", the SV is written to,
|
|
* for reference counts, sv_upgrade() etc. */
|
|
if (cSVOP->op_sv) {
|
|
PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP);
|
|
SvREFCNT_dec(PL_curpad[ix]);
|
|
SvPADTMP_on(cSVOPo->op_sv);
|
|
PL_curpad[ix] = cSVOPo->op_sv;
|
|
cSVOPo->op_sv = Nullsv;
|
|
o->op_targ = ix;
|
|
}
|
|
#endif
|
|
o->op_seq = PL_op_seqmax++;
|
|
break;
|
|
|
|
case OP_CONCAT:
|
|
if (o->op_next && o->op_next->op_type == OP_STRINGIFY) {
|
|
if (o->op_next->op_private & OPpTARGET_MY) {
|
|
if (o->op_flags & OPf_STACKED) /* chained concats */
|
|
goto ignore_optimization;
|
|
else {
|
|
/* assert(PL_opargs[o->op_type] & OA_TARGLEX); */
|
|
o->op_targ = o->op_next->op_targ;
|
|
o->op_next->op_targ = 0;
|
|
o->op_private |= OPpTARGET_MY;
|
|
}
|
|
}
|
|
null(o->op_next);
|
|
}
|
|
ignore_optimization:
|
|
o->op_seq = PL_op_seqmax++;
|
|
break;
|
|
case OP_STUB:
|
|
if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) {
|
|
o->op_seq = PL_op_seqmax++;
|
|
break; /* Scalar stub must produce undef. List stub is noop */
|
|
}
|
|
goto nothin;
|
|
case OP_NULL:
|
|
if (o->op_targ == OP_NEXTSTATE
|
|
|| o->op_targ == OP_DBSTATE
|
|
|| o->op_targ == OP_SETSTATE)
|
|
{
|
|
PL_curcop = ((COP*)o);
|
|
}
|
|
goto nothin;
|
|
case OP_SCALAR:
|
|
case OP_LINESEQ:
|
|
case OP_SCOPE:
|
|
nothin:
|
|
if (oldop && o->op_next) {
|
|
oldop->op_next = o->op_next;
|
|
continue;
|
|
}
|
|
o->op_seq = PL_op_seqmax++;
|
|
break;
|
|
|
|
case OP_GV:
|
|
if (o->op_next->op_type == OP_RV2SV) {
|
|
if (!(o->op_next->op_private & OPpDEREF)) {
|
|
null(o->op_next);
|
|
o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO
|
|
| OPpOUR_INTRO);
|
|
o->op_next = o->op_next->op_next;
|
|
o->op_type = OP_GVSV;
|
|
o->op_ppaddr = PL_ppaddr[OP_GVSV];
|
|
}
|
|
}
|
|
else if (o->op_next->op_type == OP_RV2AV) {
|
|
OP* pop = o->op_next->op_next;
|
|
IV i;
|
|
if (pop->op_type == OP_CONST &&
|
|
(PL_op = pop->op_next) &&
|
|
pop->op_next->op_type == OP_AELEM &&
|
|
!(pop->op_next->op_private &
|
|
(OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) &&
|
|
(i = SvIV(((SVOP*)pop)->op_sv) - PL_compiling.cop_arybase)
|
|
<= 255 &&
|
|
i >= 0)
|
|
{
|
|
GV *gv;
|
|
null(o->op_next);
|
|
null(pop->op_next);
|
|
null(pop);
|
|
o->op_flags |= pop->op_next->op_flags & OPf_MOD;
|
|
o->op_next = pop->op_next->op_next;
|
|
o->op_type = OP_AELEMFAST;
|
|
o->op_ppaddr = PL_ppaddr[OP_AELEMFAST];
|
|
o->op_private = (U8)i;
|
|
gv = cGVOPo_gv;
|
|
GvAVn(gv);
|
|
}
|
|
}
|
|
else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) {
|
|
GV *gv = cGVOPo_gv;
|
|
if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX(GvCV(gv))) {
|
|
/* XXX could check prototype here instead of just carping */
|
|
SV *sv = sv_newmortal();
|
|
gv_efullname3(sv, gv, Nullch);
|
|
Perl_warner(aTHX_ WARN_PROTOTYPE,
|
|
"%s() called too early to check prototype",
|
|
SvPV_nolen(sv));
|
|
}
|
|
}
|
|
|
|
o->op_seq = PL_op_seqmax++;
|
|
break;
|
|
|
|
case OP_MAPWHILE:
|
|
case OP_GREPWHILE:
|
|
case OP_AND:
|
|
case OP_OR:
|
|
case OP_ANDASSIGN:
|
|
case OP_ORASSIGN:
|
|
case OP_COND_EXPR:
|
|
case OP_RANGE:
|
|
o->op_seq = PL_op_seqmax++;
|
|
while (cLOGOP->op_other->op_type == OP_NULL)
|
|
cLOGOP->op_other = cLOGOP->op_other->op_next;
|
|
peep(cLOGOP->op_other);
|
|
break;
|
|
|
|
case OP_ENTERLOOP:
|
|
o->op_seq = PL_op_seqmax++;
|
|
peep(cLOOP->op_redoop);
|
|
peep(cLOOP->op_nextop);
|
|
peep(cLOOP->op_lastop);
|
|
break;
|
|
|
|
case OP_QR:
|
|
case OP_MATCH:
|
|
case OP_SUBST:
|
|
o->op_seq = PL_op_seqmax++;
|
|
peep(cPMOP->op_pmreplstart);
|
|
break;
|
|
|
|
case OP_EXEC:
|
|
o->op_seq = PL_op_seqmax++;
|
|
if (ckWARN(WARN_SYNTAX) && o->op_next
|
|
&& o->op_next->op_type == OP_NEXTSTATE) {
|
|
if (o->op_next->op_sibling &&
|
|
o->op_next->op_sibling->op_type != OP_EXIT &&
|
|
o->op_next->op_sibling->op_type != OP_WARN &&
|
|
o->op_next->op_sibling->op_type != OP_DIE) {
|
|
line_t oldline = CopLINE(PL_curcop);
|
|
|
|
CopLINE_set(PL_curcop, CopLINE((COP*)o->op_next));
|
|
Perl_warner(aTHX_ WARN_EXEC,
|
|
"Statement unlikely to be reached");
|
|
Perl_warner(aTHX_ WARN_EXEC,
|
|
"\t(Maybe you meant system() when you said exec()?)\n");
|
|
CopLINE_set(PL_curcop, oldline);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case OP_HELEM: {
|
|
UNOP *rop;
|
|
SV *lexname;
|
|
GV **fields;
|
|
SV **svp, **indsvp, *sv;
|
|
I32 ind;
|
|
char *key;
|
|
STRLEN keylen;
|
|
|
|
o->op_seq = PL_op_seqmax++;
|
|
if ((o->op_private & (OPpLVAL_INTRO))
|
|
|| ((BINOP*)o)->op_last->op_type != OP_CONST)
|
|
break;
|
|
rop = (UNOP*)((BINOP*)o)->op_first;
|
|
if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV)
|
|
break;
|
|
lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE);
|
|
if (!SvOBJECT(lexname))
|
|
break;
|
|
fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE);
|
|
if (!fields || !GvHV(*fields))
|
|
break;
|
|
svp = cSVOPx_svp(((BINOP*)o)->op_last);
|
|
key = SvPV(*svp, keylen);
|
|
indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE);
|
|
if (!indsvp) {
|
|
Perl_croak(aTHX_ "No such pseudo-hash field \"%s\" in variable %s of type %s",
|
|
key, SvPV(lexname, n_a), HvNAME(SvSTASH(lexname)));
|
|
}
|
|
ind = SvIV(*indsvp);
|
|
if (ind < 1)
|
|
Perl_croak(aTHX_ "Bad index while coercing array into hash");
|
|
rop->op_type = OP_RV2AV;
|
|
rop->op_ppaddr = PL_ppaddr[OP_RV2AV];
|
|
o->op_type = OP_AELEM;
|
|
o->op_ppaddr = PL_ppaddr[OP_AELEM];
|
|
sv = newSViv(ind);
|
|
if (SvREADONLY(*svp))
|
|
SvREADONLY_on(sv);
|
|
SvFLAGS(sv) |= (SvFLAGS(*svp)
|
|
& (SVs_PADBUSY|SVs_PADTMP|SVs_PADMY));
|
|
SvREFCNT_dec(*svp);
|
|
*svp = sv;
|
|
break;
|
|
}
|
|
|
|
case OP_HSLICE: {
|
|
UNOP *rop;
|
|
SV *lexname;
|
|
GV **fields;
|
|
SV **svp, **indsvp, *sv;
|
|
I32 ind;
|
|
char *key;
|
|
STRLEN keylen;
|
|
SVOP *first_key_op, *key_op;
|
|
|
|
o->op_seq = PL_op_seqmax++;
|
|
if ((o->op_private & (OPpLVAL_INTRO))
|
|
/* I bet there's always a pushmark... */
|
|
|| ((LISTOP*)o)->op_first->op_sibling->op_type != OP_LIST)
|
|
/* hmmm, no optimization if list contains only one key. */
|
|
break;
|
|
rop = (UNOP*)((LISTOP*)o)->op_last;
|
|
if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV)
|
|
break;
|
|
lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE);
|
|
if (!SvOBJECT(lexname))
|
|
break;
|
|
fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE);
|
|
if (!fields || !GvHV(*fields))
|
|
break;
|
|
/* Again guessing that the pushmark can be jumped over.... */
|
|
first_key_op = (SVOP*)((LISTOP*)((LISTOP*)o)->op_first->op_sibling)
|
|
->op_first->op_sibling;
|
|
/* Check that the key list contains only constants. */
|
|
for (key_op = first_key_op; key_op;
|
|
key_op = (SVOP*)key_op->op_sibling)
|
|
if (key_op->op_type != OP_CONST)
|
|
break;
|
|
if (key_op)
|
|
break;
|
|
rop->op_type = OP_RV2AV;
|
|
rop->op_ppaddr = PL_ppaddr[OP_RV2AV];
|
|
o->op_type = OP_ASLICE;
|
|
o->op_ppaddr = PL_ppaddr[OP_ASLICE];
|
|
for (key_op = first_key_op; key_op;
|
|
key_op = (SVOP*)key_op->op_sibling) {
|
|
svp = cSVOPx_svp(key_op);
|
|
key = SvPV(*svp, keylen);
|
|
indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE);
|
|
if (!indsvp) {
|
|
Perl_croak(aTHX_ "No such pseudo-hash field \"%s\" "
|
|
"in variable %s of type %s",
|
|
key, SvPV(lexname, n_a), HvNAME(SvSTASH(lexname)));
|
|
}
|
|
ind = SvIV(*indsvp);
|
|
if (ind < 1)
|
|
Perl_croak(aTHX_ "Bad index while coercing array into hash");
|
|
sv = newSViv(ind);
|
|
if (SvREADONLY(*svp))
|
|
SvREADONLY_on(sv);
|
|
SvFLAGS(sv) |= (SvFLAGS(*svp)
|
|
& (SVs_PADBUSY|SVs_PADTMP|SVs_PADMY));
|
|
SvREFCNT_dec(*svp);
|
|
*svp = sv;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case OP_RV2AV:
|
|
case OP_RV2HV:
|
|
if (!(o->op_flags & OPf_WANT)
|
|
|| (o->op_flags & OPf_WANT) == OPf_WANT_LIST)
|
|
{
|
|
last_composite = o;
|
|
}
|
|
o->op_seq = PL_op_seqmax++;
|
|
break;
|
|
|
|
case OP_RETURN:
|
|
if (o->op_next && o->op_next->op_type != OP_LEAVESUBLV) {
|
|
o->op_seq = PL_op_seqmax++;
|
|
break;
|
|
}
|
|
/* FALL THROUGH */
|
|
|
|
case OP_LEAVESUBLV:
|
|
if (last_composite) {
|
|
OP *r = last_composite;
|
|
|
|
while (r->op_sibling)
|
|
r = r->op_sibling;
|
|
if (r->op_next == o
|
|
|| (r->op_next->op_type == OP_LIST
|
|
&& r->op_next->op_next == o))
|
|
{
|
|
if (last_composite->op_type == OP_RV2AV)
|
|
yyerror("Lvalue subs returning arrays not implemented yet");
|
|
else
|
|
yyerror("Lvalue subs returning hashes not implemented yet");
|
|
;
|
|
}
|
|
}
|
|
/* FALL THROUGH */
|
|
|
|
default:
|
|
o->op_seq = PL_op_seqmax++;
|
|
break;
|
|
}
|
|
oldop = o;
|
|
}
|
|
LEAVE;
|
|
}
|