diff options
Diffstat (limited to 'gnu/usr.bin/perl/cop.h')
| -rw-r--r-- | gnu/usr.bin/perl/cop.h | 265 |
1 files changed, 201 insertions, 64 deletions
diff --git a/gnu/usr.bin/perl/cop.h b/gnu/usr.bin/perl/cop.h index 7d6730fb966..e588675012a 100644 --- a/gnu/usr.bin/perl/cop.h +++ b/gnu/usr.bin/perl/cop.h @@ -1,6 +1,6 @@ /* cop.h * - * Copyright (c) 1991-1999, Larry Wall + * Copyright (c) 1991-2000, Larry Wall * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. @@ -10,15 +10,59 @@ struct cop { BASEOP char * cop_label; /* label for this construct */ +#ifdef USE_ITHREADS + char * cop_stashpv; /* package line was compiled in */ + char * cop_file; /* file name the following line # is from */ +#else HV * cop_stash; /* package line was compiled in */ GV * cop_filegv; /* file the following line # is from */ +#endif U32 cop_seq; /* parse sequence number */ I32 cop_arybase; /* array base this line was compiled with */ line_t cop_line; /* line # of this command */ + SV * cop_warnings; /* lexical warnings bitmask */ }; #define Nullcop Null(COP*) +#ifdef USE_ITHREADS +# define CopFILE(c) ((c)->cop_file) +# define CopFILEGV(c) (CopFILE(c) \ + ? gv_fetchfile(CopFILE(c)) : Nullgv) +# define CopFILE_set(c,pv) ((c)->cop_file = savepv(pv)) /* XXX */ +# define CopFILESV(c) (CopFILE(c) \ + ? GvSV(gv_fetchfile(CopFILE(c))) : Nullsv) +# define CopFILEAV(c) (CopFILE(c) \ + ? GvAV(gv_fetchfile(CopFILE(c))) : Nullav) +# define CopSTASHPV(c) ((c)->cop_stashpv) +# define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = savepv(pv)) /* XXX */ +# define CopSTASH(c) (CopSTASHPV(c) \ + ? gv_stashpv(CopSTASHPV(c),GV_ADD) : Nullhv) +# define CopSTASH_set(c,hv) CopSTASHPV_set(c, HvNAME(hv)) +# define CopSTASH_eq(c,hv) (hv \ + && (CopSTASHPV(c) == HvNAME(hv) \ + || (CopSTASHPV(c) && HvNAME(hv) \ + && strEQ(CopSTASHPV(c), HvNAME(hv))))) +#else +# define CopFILEGV(c) ((c)->cop_filegv) +# define CopFILEGV_set(c,gv) ((c)->cop_filegv = gv) +# define CopFILE_set(c,pv) ((c)->cop_filegv = gv_fetchfile(pv)) +# define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : Nullsv) +# define CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : Nullav) +# define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : Nullch) +# define CopSTASH(c) ((c)->cop_stash) +# define CopSTASH_set(c,hv) ((c)->cop_stash = hv) +# define CopSTASHPV(c) (CopSTASH(c) ? HvNAME(CopSTASH(c)) : Nullch) +# define CopSTASHPV_set(c,pv) CopSTASH_set(c, gv_stashpv(pv,GV_ADD)) +# define CopSTASH_eq(c,hv) (CopSTASH(c) == hv) +#endif /* USE_ITHREADS */ + +#define CopSTASH_ne(c,hv) (!CopSTASH_eq(c,hv)) +#define CopLINE(c) ((c)->cop_line) +#define CopLINE_inc(c) (++CopLINE(c)) +#define CopLINE_dec(c) (--CopLINE(c)) +#define CopLINE_set(c,l) (CopLINE(c) = (l)) + /* * Here we have some enormously heavy (or at least ponderous) wizardry. */ @@ -34,12 +78,15 @@ struct block_sub { AV * argarray; U16 olddepth; U8 hasargs; + U8 lval; /* XXX merge lval and hasargs? */ }; #define PUSHSUB(cx) \ cx->blk_sub.cv = cv; \ cx->blk_sub.olddepth = CvDEPTH(cv); \ - cx->blk_sub.hasargs = hasargs; + cx->blk_sub.hasargs = hasargs; \ + cx->blk_sub.lval = PL_op->op_private & \ + (OPpLVAL_INTRO|OPpENTERSUB_INARGS); #define PUSHFORMAT(cx) \ cx->blk_sub.cv = cv; \ @@ -48,35 +95,51 @@ struct block_sub { cx->blk_sub.dfoutgv = PL_defoutgv; \ (void)SvREFCNT_inc(cx->blk_sub.dfoutgv) -#define POPSUB(cx) \ - { struct block_sub cxsub; \ - POPSUB1(cx); \ - POPSUB2(); } - -#define POPSUB1(cx) \ - cxsub = cx->blk_sub; /* because DESTROY may clobber *cx */ - #ifdef USE_THREADS -#define POPSAVEARRAY() NOOP +# define POP_SAVEARRAY() NOOP #else -#define POPSAVEARRAY() \ +# define POP_SAVEARRAY() \ STMT_START { \ SvREFCNT_dec(GvAV(PL_defgv)); \ - GvAV(PL_defgv) = cxsub.savearray; \ + GvAV(PL_defgv) = cx->blk_sub.savearray; \ } STMT_END #endif /* USE_THREADS */ -#define POPSUB2() \ - if (cxsub.hasargs) { \ - POPSAVEARRAY(); \ - /* destroy arg array */ \ - av_clear(cxsub.argarray); \ - AvREAL_off(cxsub.argarray); \ +#ifdef USE_ITHREADS + /* junk in @_ spells trouble when cloning CVs, so don't leave any */ +# define CLEAR_ARGARRAY() av_clear(cx->blk_sub.argarray) +#else +# define CLEAR_ARGARRAY() NOOP +#endif /* USE_ITHREADS */ + + +#define POPSUB(cx,sv) \ + STMT_START { \ + if (cx->blk_sub.hasargs) { \ + POP_SAVEARRAY(); \ + /* abandon @_ if it got reified */ \ + if (AvREAL(cx->blk_sub.argarray)) { \ + SSize_t fill = AvFILLp(cx->blk_sub.argarray); \ + SvREFCNT_dec(cx->blk_sub.argarray); \ + cx->blk_sub.argarray = newAV(); \ + av_extend(cx->blk_sub.argarray, fill); \ + AvFLAGS(cx->blk_sub.argarray) = AVf_REIFY; \ + PL_curpad[0] = (SV*)cx->blk_sub.argarray; \ + } \ + else { \ + CLEAR_ARGARRAY(); \ + } \ } \ - if (cxsub.cv) { \ - if (!(CvDEPTH(cxsub.cv) = cxsub.olddepth)) \ - SvREFCNT_dec(cxsub.cv); \ - } + sv = (SV*)cx->blk_sub.cv; \ + if (sv && (CvDEPTH((CV*)sv) = cx->blk_sub.olddepth)) \ + sv = Nullsv; \ + } STMT_END + +#define LEAVESUB(sv) \ + STMT_START { \ + if (sv) \ + SvREFCNT_dec(sv); \ + } STMT_END #define POPFORMAT(cx) \ setdefout(cx->blk_sub.dfoutgv); \ @@ -86,22 +149,28 @@ struct block_sub { struct block_eval { I32 old_in_eval; I32 old_op_type; - char * old_name; + SV * old_namesv; OP * old_eval_root; SV * cur_text; }; #define PUSHEVAL(cx,n,fgv) \ + STMT_START { \ cx->blk_eval.old_in_eval = PL_in_eval; \ - cx->blk_eval.old_op_type = PL_op->op_type; \ - cx->blk_eval.old_name = n; \ - cx->blk_eval.old_eval_root = PL_eval_root; \ - cx->blk_eval.cur_text = PL_linestr; + cx->blk_eval.old_op_type = PL_op->op_type; \ + cx->blk_eval.old_namesv = (n ? newSVpv(n,0) : Nullsv); \ + cx->blk_eval.old_eval_root = PL_eval_root; \ + cx->blk_eval.cur_text = PL_linestr; \ + } STMT_END #define POPEVAL(cx) \ + STMT_START { \ PL_in_eval = cx->blk_eval.old_in_eval; \ optype = cx->blk_eval.old_op_type; \ - PL_eval_root = cx->blk_eval.old_eval_root; + PL_eval_root = cx->blk_eval.old_eval_root; \ + if (cx->blk_eval.old_namesv) \ + sv_2mortal(cx->blk_eval.old_namesv); \ + } STMT_END /* loop context */ struct block_loop { @@ -110,7 +179,12 @@ struct block_loop { OP * redo_op; OP * next_op; OP * last_op; +#ifdef USE_ITHREADS + void * iterdata; + SV ** oldcurpad; +#else SV ** itervar; +#endif SV * itersave; SV * iterlval; AV * iterary; @@ -118,35 +192,44 @@ struct block_loop { IV itermax; }; -#define PUSHLOOP(cx, ivar, s) \ - cx->blk_loop.label = PL_curcop->cop_label; \ - cx->blk_loop.resetsp = s - PL_stack_base; \ +#ifdef USE_ITHREADS +# define CxITERVAR(c) \ + ((c)->blk_loop.iterdata \ + ? (CxPADLOOP(cx) \ + ? &((c)->blk_loop.oldcurpad)[(PADOFFSET)(c)->blk_loop.iterdata] \ + : &GvSV((GV*)(c)->blk_loop.iterdata)) \ + : (SV**)NULL) +# define CX_ITERDATA_SET(cx,idata) \ + cx->blk_loop.oldcurpad = PL_curpad; \ + if ((cx->blk_loop.iterdata = (idata))) \ + cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); +#else +# define CxITERVAR(c) ((c)->blk_loop.itervar) +# define CX_ITERDATA_SET(cx,ivar) \ + if ((cx->blk_loop.itervar = (SV**)(ivar))) \ + cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); +#endif + +#define PUSHLOOP(cx, dat, s) \ + cx->blk_loop.label = PL_curcop->cop_label; \ + cx->blk_loop.resetsp = s - PL_stack_base; \ cx->blk_loop.redo_op = cLOOP->op_redoop; \ cx->blk_loop.next_op = cLOOP->op_nextop; \ cx->blk_loop.last_op = cLOOP->op_lastop; \ - if (cx->blk_loop.itervar = (ivar)) \ - cx->blk_loop.itersave = SvREFCNT_inc(*cx->blk_loop.itervar);\ cx->blk_loop.iterlval = Nullsv; \ cx->blk_loop.iterary = Nullav; \ - cx->blk_loop.iterix = -1; + cx->blk_loop.iterix = -1; \ + CX_ITERDATA_SET(cx,dat); #define POPLOOP(cx) \ - { struct block_loop cxloop; \ - POPLOOP1(cx); \ - POPLOOP2(); } - -#define POPLOOP1(cx) \ - cxloop = cx->blk_loop; /* because DESTROY may clobber *cx */ \ - newsp = PL_stack_base + cxloop.resetsp; - -#define POPLOOP2() \ - SvREFCNT_dec(cxloop.iterlval); \ - if (cxloop.itervar) { \ - sv_2mortal(*cxloop.itervar); \ - *cxloop.itervar = cxloop.itersave; \ + SvREFCNT_dec(cx->blk_loop.iterlval); \ + if (CxITERVAR(cx)) { \ + SV **s_v_p = CxITERVAR(cx); \ + sv_2mortal(*s_v_p); \ + *s_v_p = cx->blk_loop.itersave; \ } \ - if (cxloop.iterary && cxloop.iterary != PL_curstack) \ - SvREFCNT_dec(cxloop.iterary); + if (cx->blk_loop.iterary && cx->blk_loop.iterary != PL_curstack)\ + SvREFCNT_dec(cx->blk_loop.iterary); /* context common to subroutines, evals and loops */ struct block { @@ -185,8 +268,8 @@ struct block { cx->blk_oldretsp = PL_retstack_ix, \ cx->blk_oldpm = PL_curpm, \ cx->blk_gimme = gimme; \ - DEBUG_l( PerlIO_printf(PerlIO_stderr(), "Entering block %ld, type %s\n", \ - (long)cxstack_ix, block_type[CxTYPE(cx)]); ) + DEBUG_l( PerlIO_printf(Perl_debug_log, "Entering block %ld, type %s\n", \ + (long)cxstack_ix, PL_block_type[CxTYPE(cx)]); ) /* Exit a block (RETURN and LAST). */ #define POPBLOCK(cx,pm) cx = &cxstack[cxstack_ix--], \ @@ -197,8 +280,8 @@ struct block { PL_retstack_ix = cx->blk_oldretsp, \ pm = cx->blk_oldpm, \ gimme = cx->blk_gimme; \ - DEBUG_l( PerlIO_printf(PerlIO_stderr(), "Leaving block %ld, type %s\n", \ - (long)cxstack_ix+1,block_type[CxTYPE(cx)]); ) + DEBUG_l( PerlIO_printf(Perl_debug_log, "Leaving block %ld, type %s\n", \ + (long)cxstack_ix+1,PL_block_type[CxTYPE(cx)]); ) /* Continue a block elsewhere (NEXT and REDO). */ #define TOPBLOCK(cx) cx = &cxstack[cxstack_ix], \ @@ -212,7 +295,7 @@ struct block { struct subst { I32 sbu_iters; I32 sbu_maxiters; - I32 sbu_safebase; + I32 sbu_rflags; I32 sbu_oldsave; bool sbu_once; bool sbu_rxtainted; @@ -227,7 +310,7 @@ struct subst { }; #define sb_iters cx_u.cx_subst.sbu_iters #define sb_maxiters cx_u.cx_subst.sbu_maxiters -#define sb_safebase cx_u.cx_subst.sbu_safebase +#define sb_rflags cx_u.cx_subst.sbu_rflags #define sb_oldsave cx_u.cx_subst.sbu_oldsave #define sb_once cx_u.cx_subst.sbu_once #define sb_rxtainted cx_u.cx_subst.sbu_rxtainted @@ -243,7 +326,7 @@ struct subst { #define PUSHSUBST(cx) CXINC, cx = &cxstack[cxstack_ix], \ cx->sb_iters = iters, \ cx->sb_maxiters = maxiters, \ - cx->sb_safebase = safebase, \ + cx->sb_rflags = r_flags, \ cx->sb_oldsave = oldsave, \ cx->sb_once = once, \ cx->sb_rxtainted = rxtainted, \ @@ -276,27 +359,77 @@ struct context { #define CXt_LOOP 3 #define CXt_SUBST 4 #define CXt_BLOCK 5 +#define CXt_FORMAT 6 /* private flags for CXt_EVAL */ #define CXp_REAL 0x00000100 /* truly eval'', not a lookalike */ +#define CXp_TRYBLOCK 0x00000200 /* eval{}, not eval'' or similar */ + +#ifdef USE_ITHREADS +/* private flags for CXt_LOOP */ +# define CXp_PADVAR 0x00000100 /* itervar lives on pad, iterdata + has pad offset; if not set, + iterdata holds GV* */ +# define CxPADLOOP(c) (((c)->cx_type & (CXt_LOOP|CXp_PADVAR)) \ + == (CXt_LOOP|CXp_PADVAR)) +#endif #define CxTYPE(c) ((c)->cx_type & CXTYPEMASK) -#define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) == (CXt_EVAL|CXp_REAL)) +#define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) \ + == (CXt_EVAL|CXp_REAL)) +#define CxTRYBLOCK(c) (((c)->cx_type & (CXt_EVAL|CXp_TRYBLOCK)) \ + == (CXt_EVAL|CXp_TRYBLOCK)) #define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc())) /* "gimme" values */ + +/* +=for apidoc AmU||G_SCALAR +Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and +L<perlcall>. + +=for apidoc AmU||G_ARRAY +Used to indicate array context. See C<GIMME_V>, C<GIMME> and +L<perlcall>. + +=for apidoc AmU||G_VOID +Used to indicate void context. See C<GIMME_V> and L<perlcall>. + +=for apidoc AmU||G_DISCARD +Indicates that arguments returned from a callback should be discarded. See +L<perlcall>. + +=for apidoc AmU||G_EVAL + +Used to force a Perl C<eval> wrapper around a callback. See +L<perlcall>. + +=for apidoc AmU||G_NOARGS + +Indicates that no arguments are being sent to a callback. See +L<perlcall>. + +=cut +*/ + #define G_SCALAR 0 #define G_ARRAY 1 #define G_VOID 128 /* skip this bit when adding flags below */ -/* extra flags for perl_call_* routines */ +/* extra flags for Perl_call_* routines */ #define G_DISCARD 2 /* Call FREETMPS. */ #define G_EVAL 4 /* Assume eval {} around subroutine call. */ #define G_NOARGS 8 /* Don't construct a @_ array. */ #define G_KEEPERR 16 /* Append errors to $@, don't overwrite it */ #define G_NODEBUG 32 /* Disable debugging at toplevel. */ +/* flag bits for PL_in_eval */ +#define EVAL_NULL 0 /* not in an eval */ +#define EVAL_INEVAL 1 /* some enclosing scope is an eval */ +#define EVAL_WARNONLY 2 /* used by yywarn() when calling yyerror() */ +#define EVAL_KEEPERR 4 /* set by Perl_call_sv if G_KEEPERR */ + /* Support for switching (stack and block) contexts. * This ensures magic doesn't invalidate local stack and cx pointers. */ @@ -321,7 +454,7 @@ struct stackinfo { I32 si_type; /* type of runlevel */ struct stackinfo * si_prev; struct stackinfo * si_next; - I32 * si_markbase; /* where markstack begins for us. + I32 si_markoff; /* offset where markstack begins for us. * currently used only with DEBUGGING, * but not #ifdef-ed for bincompat */ }; @@ -333,9 +466,10 @@ typedef struct stackinfo PERL_SI; #define cxstack_max (PL_curstackinfo->si_cxmax) #ifdef DEBUGGING -# define SET_MARKBASE PL_curstackinfo->si_markbase = PL_markstack_ptr +# define SET_MARK_OFFSET \ + PL_curstackinfo->si_markoff = PL_markstack_ptr - PL_markstack #else -# define SET_MARKBASE NOOP +# define SET_MARK_OFFSET NOOP #endif #define PUSHSTACKi(type) \ @@ -351,16 +485,19 @@ typedef struct stackinfo PERL_SI; AvFILLp(next->si_stack) = 0; \ SWITCHSTACK(PL_curstack,next->si_stack); \ PL_curstackinfo = next; \ - SET_MARKBASE; \ + SET_MARK_OFFSET; \ } STMT_END #define PUSHSTACK PUSHSTACKi(PERLSI_UNKNOWN) +/* POPSTACK works with PL_stack_sp, so it may need to be bracketed by + * PUTBACK/SPAGAIN to flush/refresh any local SP that may be active */ #define POPSTACK \ STMT_START { \ + djSP; \ PERL_SI *prev = PL_curstackinfo->si_prev; \ if (!prev) { \ - PerlIO_printf(PerlIO_stderr(), "panic: POPSTACK\n"); \ + PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \ my_exit(1); \ } \ SWITCHSTACK(PL_curstack,prev->si_stack); \ |