/* cop.h
*
- * Copyright (c) 1991-1994, Larry Wall
+ * Copyright (c) 1991-2001, 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.
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 */
+ SV * cop_io; /* lexical IO defaults */
};
#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))
+# 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 = ((pv) ? savepv(pv) : Nullch))
+# define CopSTASH(c) (CopSTASHPV(c) \
+ ? gv_stashpv(CopSTASHPV(c),GV_ADD) : Nullhv)
+# define CopSTASH_set(c,hv) CopSTASHPV_set(c, (hv) ? HvNAME(hv) : Nullch)
+# 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*)SvREFCNT_inc(gv))
+# define CopFILE_set(c,pv) CopFILEGV_set((c), 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)
+ /* cop_stash is not refcounted */
+# 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.
*/
CV * cv;
GV * gv;
GV * dfoutgv;
+#ifndef USE_THREADS
AV * savearray;
+#endif /* USE_THREADS */
AV * argarray;
U16 olddepth;
U8 hasargs;
+ U8 lval; /* XXX merge lval and hasargs? */
+ SV ** oldcurpad;
};
#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; \
cx->blk_sub.gv = gv; \
cx->blk_sub.hasargs = 0; \
- cx->blk_sub.dfoutgv = defoutgv; \
+ cx->blk_sub.dfoutgv = PL_defoutgv; \
(void)SvREFCNT_inc(cx->blk_sub.dfoutgv)
-/* We muck with cxstack_ix since _dec may call a DESTROY, overwriting cx. */
+#ifdef USE_THREADS
+# define POP_SAVEARRAY() NOOP
+#else
+# define POP_SAVEARRAY() \
+ STMT_START { \
+ SvREFCNT_dec(GvAV(PL_defgv)); \
+ GvAV(PL_defgv) = cx->blk_sub.savearray; \
+ } STMT_END
+#endif /* USE_THREADS */
-#define POPSUB(cx) \
- if (cx->blk_sub.hasargs) { /* put back old @_ */ \
- GvAV(defgv) = cx->blk_sub.savearray; \
- } \
- if (cx->blk_sub.cv) { \
- if (!(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth)) { \
- if (cx->blk_sub.hasargs) { \
- SvREFCNT_inc((SV*)cx->blk_sub.argarray); \
- } \
- cxstack_ix++; \
- SvREFCNT_dec((SV*)cx->blk_sub.cv); \
- cxstack_ix--; \
+/* junk in @_ spells trouble when cloning CVs and in pp_caller(), so don't
+ * leave any (a fast av_clear(ary), basically) */
+#define CLEAR_ARGARRAY(ary) \
+ STMT_START { \
+ AvMAX(ary) += AvARRAY(ary) - AvALLOC(ary); \
+ SvPVX(ary) = (char*)AvALLOC(ary); \
+ AvFILLp(ary) = -1; \
+ } STMT_END
+
+#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; \
+ cx->blk_sub.oldcurpad[0] = (SV*)cx->blk_sub.argarray; \
+ } \
+ else { \
+ CLEAR_ARGARRAY(cx->blk_sub.argarray); \
} \
- }
+ } \
+ 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); \
struct block_eval {
I32 old_in_eval;
I32 old_op_type;
- char * old_name;
+ SV * old_namesv;
OP * old_eval_root;
SV * cur_text;
+ CV * cv;
};
#define PUSHEVAL(cx,n,fgv) \
- cx->blk_eval.old_in_eval = in_eval; \
- cx->blk_eval.old_op_type = op->op_type; \
- cx->blk_eval.old_name = n; \
- cx->blk_eval.old_eval_root = eval_root; \
- cx->blk_eval.cur_text = linestr;
+ 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_namesv = (n ? newSVpv(n,0) : Nullsv); \
+ cx->blk_eval.old_eval_root = PL_eval_root; \
+ cx->blk_eval.cur_text = PL_linestr; \
+ cx->blk_eval.cv = Nullcv; /* set by doeval(), as applicable */ \
+ } STMT_END
#define POPEVAL(cx) \
- in_eval = cx->blk_eval.old_in_eval; \
+ STMT_START { \
+ PL_in_eval = cx->blk_eval.old_in_eval; \
optype = cx->blk_eval.old_op_type; \
- 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 {
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;
- I32 iterix;
+ IV iterix;
+ IV itermax;
};
-#define PUSHLOOP(cx, ivar, s) \
- cx->blk_loop.label = curcop->cop_label; \
- cx->blk_loop.resetsp = s - 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; \
cx->blk_loop.iterlval = Nullsv; \
- if (cx->blk_loop.itervar = (ivar)) \
- cx->blk_loop.itersave = SvREFCNT_inc(*cx->blk_loop.itervar);
+ cx->blk_loop.iterary = Nullav; \
+ cx->blk_loop.iterix = -1; \
+ CX_ITERDATA_SET(cx,dat);
#define POPLOOP(cx) \
- newsp = stack_base + cx->blk_loop.resetsp; \
SvREFCNT_dec(cx->blk_loop.iterlval); \
- if (cx->blk_loop.itervar) { \
- SvREFCNT_dec(*cx->blk_loop.itervar); \
- *cx->blk_loop.itervar = cx->blk_loop.itersave; \
- }
+ if (CxITERVAR(cx)) { \
+ SV **s_v_p = CxITERVAR(cx); \
+ sv_2mortal(*s_v_p); \
+ *s_v_p = cx->blk_loop.itersave; \
+ } \
+ 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 {
/* Enter a block. */
#define PUSHBLOCK(cx,t,sp) CXINC, cx = &cxstack[cxstack_ix], \
cx->cx_type = t, \
- cx->blk_oldsp = sp - stack_base, \
- cx->blk_oldcop = curcop, \
- cx->blk_oldmarksp = markstack_ptr - markstack, \
- cx->blk_oldscopesp = scopestack_ix, \
- cx->blk_oldretsp = retstack_ix, \
- cx->blk_oldpm = curpm, \
+ cx->blk_oldsp = sp - PL_stack_base, \
+ cx->blk_oldcop = PL_curcop, \
+ cx->blk_oldmarksp = PL_markstack_ptr - PL_markstack, \
+ cx->blk_oldscopesp = PL_scopestack_ix, \
+ 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[t]); )
+ 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--], \
- newsp = stack_base + cx->blk_oldsp, \
- curcop = cx->blk_oldcop, \
- markstack_ptr = markstack + cx->blk_oldmarksp, \
- scopestack_ix = cx->blk_oldscopesp, \
- 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[cx->cx_type]); )
+ newsp = PL_stack_base + cx->blk_oldsp, \
+ PL_curcop = cx->blk_oldcop, \
+ PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \
+ PL_scopestack_ix = cx->blk_oldscopesp, \
+ PL_retstack_ix = cx->blk_oldretsp, \
+ pm = cx->blk_oldpm, \
+ gimme = cx->blk_gimme; \
+ 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], \
- stack_sp = stack_base + cx->blk_oldsp, \
- markstack_ptr = markstack + cx->blk_oldmarksp, \
- scopestack_ix = cx->blk_oldscopesp, \
- retstack_ix = cx->blk_oldretsp
+#define TOPBLOCK(cx) cx = &cxstack[cxstack_ix], \
+ PL_stack_sp = PL_stack_base + cx->blk_oldsp, \
+ PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \
+ PL_scopestack_ix = cx->blk_oldscopesp, \
+ PL_retstack_ix = cx->blk_oldretsp, \
+ PL_curpm = cx->blk_oldpm
/* substitution context */
struct subst {
I32 sbu_iters;
I32 sbu_maxiters;
- I32 sbu_safebase;
+ I32 sbu_rflags;
I32 sbu_oldsave;
bool sbu_once;
bool sbu_rxtainted;
char * sbu_s;
char * sbu_m;
char * sbu_strend;
- char * sbu_subbase;
+ void * sbu_rxres;
REGEXP * sbu_rx;
};
#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
#define sb_s cx_u.cx_subst.sbu_s
#define sb_m cx_u.cx_subst.sbu_m
#define sb_strend cx_u.cx_subst.sbu_strend
-#define sb_subbase cx_u.cx_subst.sbu_subbase
+#define sb_rxres cx_u.cx_subst.sbu_rxres
#define sb_rx cx_u.cx_subst.sbu_rx
#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, \
cx->sb_s = s, \
cx->sb_m = m, \
cx->sb_strend = strend, \
+ cx->sb_rxres = Null(void*), \
cx->sb_rx = rx, \
- cx->cx_type = CXt_SUBST
+ cx->cx_type = CXt_SUBST; \
+ rxres_save(&cx->sb_rxres, rx)
-#define POPSUBST(cx) cxstack_ix--
+#define POPSUBST(cx) cx = &cxstack[cxstack_ix--]; \
+ rxres_free(&cx->sb_rxres)
struct context {
- I32 cx_type; /* what kind of context this is */
+ U32 cx_type; /* what kind of context this is */
union {
struct block cx_blk;
struct subst cx_subst;
} cx_u;
};
+
+#define CXTYPEMASK 0xff
#define CXt_NULL 0
#define CXt_SUB 1
#define CXt_EVAL 2
#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 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 list 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 $@ rather than overwriting it */
+#define G_KEEPERR 16 /* Append errors to $@, don't overwrite it */
+#define G_NODEBUG 32 /* Disable debugging at toplevel. */
+#define G_METHOD 64 /* Calling method. */
+
+/* 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 */
+#define EVAL_INREQUIRE 8 /* The code is being required. */
+
+/* Support for switching (stack and block) contexts.
+ * This ensures magic doesn't invalidate local stack and cx pointers.
+ */
+
+#define PERLSI_UNKNOWN -1
+#define PERLSI_UNDEF 0
+#define PERLSI_MAIN 1
+#define PERLSI_MAGIC 2
+#define PERLSI_SORT 3
+#define PERLSI_SIGNAL 4
+#define PERLSI_OVERLOAD 5
+#define PERLSI_DESTROY 6
+#define PERLSI_WARNHOOK 7
+#define PERLSI_DIEHOOK 8
+#define PERLSI_REQUIRE 9
+
+struct stackinfo {
+ AV * si_stack; /* stack for current runlevel */
+ PERL_CONTEXT * si_cxstack; /* context stack for runlevel */
+ I32 si_cxix; /* current context index */
+ I32 si_cxmax; /* maximum allocated index */
+ I32 si_type; /* type of runlevel */
+ struct stackinfo * si_prev;
+ struct stackinfo * si_next;
+ I32 si_markoff; /* offset where markstack begins for us.
+ * currently used only with DEBUGGING,
+ * but not #ifdef-ed for bincompat */
+};
+
+typedef struct stackinfo PERL_SI;
+
+#define cxstack (PL_curstackinfo->si_cxstack)
+#define cxstack_ix (PL_curstackinfo->si_cxix)
+#define cxstack_max (PL_curstackinfo->si_cxmax)
+
+#ifdef DEBUGGING
+# define SET_MARK_OFFSET \
+ PL_curstackinfo->si_markoff = PL_markstack_ptr - PL_markstack
+#else
+# define SET_MARK_OFFSET NOOP
+#endif
+
+#define PUSHSTACKi(type) \
+ STMT_START { \
+ PERL_SI *next = PL_curstackinfo->si_next; \
+ if (!next) { \
+ next = new_stackinfo(32, 2048/sizeof(PERL_CONTEXT) - 1); \
+ next->si_prev = PL_curstackinfo; \
+ PL_curstackinfo->si_next = next; \
+ } \
+ next->si_type = type; \
+ next->si_cxix = -1; \
+ AvFILLp(next->si_stack) = 0; \
+ SWITCHSTACK(PL_curstack,next->si_stack); \
+ PL_curstackinfo = next; \
+ 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 { \
+ dSP; \
+ PERL_SI *prev = PL_curstackinfo->si_prev; \
+ if (!prev) { \
+ PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \
+ my_exit(1); \
+ } \
+ SWITCHSTACK(PL_curstack,prev->si_stack); \
+ /* don't free prev here, free them all at the END{} */ \
+ PL_curstackinfo = prev; \
+ } STMT_END
+
+#define POPSTACK_TO(s) \
+ STMT_START { \
+ while (PL_curstack != s) { \
+ dounwind(-1); \
+ POPSTACK; \
+ } \
+ } STMT_END