/* cop.h
*
- * Copyright (c) 1991-1999, Larry Wall
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
+ * Control ops (cops) are one of the three ops OP_NEXTSTATE, OP_DBSTATE,
+ * and OP_SETSTATE that (loosely speaking) are separate statements.
+ * They hold information important for lexical state and error reporting.
+ * At run time, PL_curcop is set to point to the most recently executed cop,
+ * and thus can be used to determine our current state.
*/
+/* A jmpenv packages the state required to perform a proper non-local jump.
+ * Note that there is a start_env initialized when perl starts, and top_env
+ * points to this initially, so top_env should always be non-null.
+ *
+ * Existence of a non-null top_env->je_prev implies it is valid to call
+ * longjmp() at that runlevel (we make sure start_env.je_prev is always
+ * null to ensure this).
+ *
+ * je_mustcatch, when set at any runlevel to TRUE, means eval ops must
+ * establish a local jmpenv to handle exception traps. Care must be taken
+ * to restore the previous value of je_mustcatch before exiting the
+ * stack frame iff JMPENV_PUSH was not called in that stack frame.
+ * GSAR 97-03-27
+ */
+
+struct jmpenv {
+ struct jmpenv * je_prev;
+ Sigjmp_buf je_buf; /* only for use if !je_throw */
+ int je_ret; /* last exception thrown */
+ bool je_mustcatch; /* need to call longjmp()? */
+};
+
+typedef struct jmpenv JMPENV;
+
+#ifdef OP_IN_REGISTER
+#define OP_REG_TO_MEM PL_opsave = op
+#define OP_MEM_TO_REG op = PL_opsave
+#else
+#define OP_REG_TO_MEM NOOP
+#define OP_MEM_TO_REG NOOP
+#endif
+
+/*
+ * How to build the first jmpenv.
+ *
+ * top_env needs to be non-zero. It points to an area
+ * in which longjmp() stuff is stored, as C callstack
+ * info there at least is thread specific this has to
+ * be per-thread. Otherwise a 'die' in a thread gives
+ * that thread the C stack of last thread to do an eval {}!
+ */
+
+#define JMPENV_BOOTSTRAP \
+ STMT_START { \
+ Zero(&PL_start_env, 1, JMPENV); \
+ PL_start_env.je_ret = -1; \
+ PL_start_env.je_mustcatch = TRUE; \
+ PL_top_env = &PL_start_env; \
+ } STMT_END
+
+/*
+ * PERL_FLEXIBLE_EXCEPTIONS
+ *
+ * All the flexible exceptions code has been removed.
+ * See the following threads for details:
+ *
+ * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2004-07/msg00378.html
+ *
+ * Joshua's original patches (which weren't applied) and discussion:
+ *
+ * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01396.html
+ * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01489.html
+ * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01491.html
+ * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01608.html
+ * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg02144.html
+ * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg02998.html
+ *
+ * Chip's reworked patch and discussion:
+ *
+ * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1999-03/msg00520.html
+ *
+ * The flaw in these patches (which went unnoticed at the time) was
+ * that they moved some code that could potentially die() out of the
+ * region protected by the setjmp()s. This caused exceptions within
+ * END blocks and such to not be handled by the correct setjmp().
+ *
+ * The original patches that introduces flexible exceptions were:
+ *
+ * http://public.activestate.com/cgi-bin/perlbrowse?patch=3386
+ * http://public.activestate.com/cgi-bin/perlbrowse?patch=5162
+ */
+
+#define dJMPENV JMPENV cur_env
+
+#define JMPENV_PUSH(v) \
+ STMT_START { \
+ DEBUG_l(Perl_deb(aTHX_ "Setting up jumplevel %p, was %p\n", \
+ &cur_env, PL_top_env)); \
+ cur_env.je_prev = PL_top_env; \
+ OP_REG_TO_MEM; \
+ cur_env.je_ret = PerlProc_setjmp(cur_env.je_buf, SCOPE_SAVES_SIGNAL_MASK); \
+ OP_MEM_TO_REG; \
+ PL_top_env = &cur_env; \
+ cur_env.je_mustcatch = FALSE; \
+ (v) = cur_env.je_ret; \
+ } STMT_END
+
+#define JMPENV_POP \
+ STMT_START { \
+ DEBUG_l(Perl_deb(aTHX_ "popping jumplevel was %p, now %p\n", \
+ PL_top_env, cur_env.je_prev)); \
+ PL_top_env = cur_env.je_prev; \
+ } STMT_END
+
+#define JMPENV_JUMP(v) \
+ STMT_START { \
+ OP_REG_TO_MEM; \
+ if (PL_top_env->je_prev) \
+ PerlProc_longjmp(PL_top_env->je_buf, (v)); \
+ if ((v) == 2) \
+ PerlProc_exit(STATUS_EXIT); \
+ PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); \
+ PerlProc_exit(1); \
+ } STMT_END
+
+#define CATCH_GET (PL_top_env->je_mustcatch)
+#define CATCH_SET(v) (PL_top_env->je_mustcatch = (v))
+
+
+
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)
+
+# ifdef NETWARE
+# define CopFILE_set(c,pv) ((c)->cop_file = savepv(pv))
+# else
+# define CopFILE_set(c,pv) ((c)->cop_file = savesharedpv(pv))
+# endif
+
+# 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)
+
+# ifdef NETWARE
+# define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = ((pv) ? savepv(pv) : Nullch))
+# else
+# define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = savesharedpv(pv))
+# endif
+
+# define CopSTASH(c) (CopSTASHPV(c) \
+ ? gv_stashpv(CopSTASHPV(c),GV_ADD) : Nullhv)
+# define CopSTASH_set(c,hv) CopSTASHPV_set(c, (hv) ? HvNAME_get(hv) : Nullch)
+# define CopSTASH_eq(c,hv) ((hv) && stashpv_hvname_match(c,hv))
+# ifdef NETWARE
+# define CopSTASH_free(c) SAVECOPSTASH_FREE(c)
+# define CopFILE_free(c) SAVECOPFILE_FREE(c)
+# else
+# define CopSTASH_free(c) PerlMemShared_free(CopSTASHPV(c))
+# define CopFILE_free(c) (PerlMemShared_free(CopFILE(c)),(CopFILE(c) = Nullch))
+# endif
+#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_get(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))
+# define CopSTASH_free(c)
+# define CopFILE_free(c) (SvREFCNT_dec(CopFILEGV(c)),(CopFILEGV(c) = Nullgv))
+
+#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))
+
+/* OutCopFILE() is CopFILE for output (caller, die, warn, etc.) */
+#ifdef MACOS_TRADITIONAL
+# define OutCopFILE(c) MacPerl_MPWFileName(CopFILE(c))
+#else
+# define OutCopFILE(c) CopFILE(c)
+#endif
+
/*
* 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;
+ long olddepth;
U8 hasargs;
U8 lval; /* XXX merge lval and hasargs? */
+ PAD *oldcomppad;
+ OP * retop; /* op to execute on exit from sub */
};
-#define PUSHSUB(cx) \
+/* base for the next two macros. Don't use directly.
+ * Note that the refcnt of the cv is incremented twice; The CX one is
+ * decremented by LEAVESUB, the other by LEAVE. */
+
+#define PUSHSUB_BASE(cx) \
cx->blk_sub.cv = cv; \
cx->blk_sub.olddepth = CvDEPTH(cv); \
cx->blk_sub.hasargs = hasargs; \
+ cx->blk_sub.retop = Nullop; \
+ if (!CvDEPTH(cv)) { \
+ (void)SvREFCNT_inc(cv); \
+ (void)SvREFCNT_inc(cv); \
+ SAVEFREESV(cv); \
+ }
+
+
+#define PUSHSUB(cx) \
+ PUSHSUB_BASE(cx) \
cx->blk_sub.lval = PL_op->op_private & \
(OPpLVAL_INTRO|OPpENTERSUB_INARGS);
+/* variant for use by OP_DBSTATE, where op_private holds hint bits */
+#define PUSHSUB_DB(cx) \
+ PUSHSUB_BASE(cx) \
+ cx->blk_sub.lval = 0;
+
+
#define PUSHFORMAT(cx) \
cx->blk_sub.cv = cv; \
cx->blk_sub.gv = gv; \
+ cx->blk_sub.retop = Nullop; \
cx->blk_sub.hasargs = 0; \
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
-#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
+
+/* 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); \
+ SvPV_set(ary, (char*)AvALLOC(ary)); \
+ AvFILLp(ary) = -1; \
} STMT_END
-#endif /* USE_THREADS */
-#define POPSUB2() \
- if (cxsub.hasargs) { \
- POPSAVEARRAY(); \
+#define POPSUB(cx,sv) \
+ STMT_START { \
+ if (cx->blk_sub.hasargs) { \
+ POP_SAVEARRAY(); \
/* abandon @_ if it got reified */ \
- if (AvREAL(cxsub.argarray)) { \
- SSize_t fill = AvFILLp(cxsub.argarray); \
- SvREFCNT_dec(cxsub.argarray); \
- cxsub.argarray = newAV(); \
- av_extend(cxsub.argarray, fill); \
- AvFLAGS(cxsub.argarray) = AVf_REIFY; \
- PL_curpad[0] = (SV*)cxsub.argarray; \
+ 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); \
+ AvREIFY_only(cx->blk_sub.argarray); \
+ CX_CURPAD_SV(cx->blk_sub, 0) = (SV*)cx->blk_sub.argarray; \
+ } \
+ else { \
+ CLEAR_ARGARRAY(cx->blk_sub.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); \
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;
+ OP * retop; /* op to execute on exit from eval */
+ JMPENV * cur_top_env; /* value of PL_top_env when eval CX created */
};
#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; \
+ cx->blk_eval.cv = Nullcv; /* set by doeval(), as applicable */ \
+ cx->blk_eval.retop = Nullop; \
+ cx->blk_eval.cur_top_env = PL_top_env; \
+ } 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 {
OP * redo_op;
OP * next_op;
OP * last_op;
+#ifdef USE_ITHREADS
+ void * iterdata;
+ PAD *oldcomppad;
+#else
SV ** itervar;
+#endif
SV * itersave;
SV * iterlval;
AV * iterary;
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) \
+ ? &CX_CURPAD_SV( (c)->blk_loop, \
+ INT2PTR(PADOFFSET, (c)->blk_loop.iterdata)) \
+ : &GvSV((GV*)(c)->blk_loop.iterdata)) \
+ : (SV**)NULL)
+# define CX_ITERDATA_SET(cx,idata) \
+ CX_CURPAD_SAVE(cx->blk_loop); \
+ if ((cx->blk_loop.iterdata = (idata))) \
+ cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \
+ else \
+ cx->blk_loop.itersave = Nullsv;
+#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)); \
+ else \
+ cx->blk_loop.itersave = Nullsv;
+#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 {
I32 blku_oldsp; /* stack pointer to copy stuff down to */
COP * blku_oldcop; /* old curcop pointer */
- I32 blku_oldretsp; /* return stack index */
I32 blku_oldmarksp; /* mark stack index */
I32 blku_oldscopesp; /* scope stack index */
PMOP * blku_oldpm; /* values of pattern match vars */
};
#define blk_oldsp cx_u.cx_blk.blku_oldsp
#define blk_oldcop cx_u.cx_blk.blku_oldcop
-#define blk_oldretsp cx_u.cx_blk.blku_oldretsp
#define blk_oldmarksp cx_u.cx_blk.blku_oldmarksp
#define blk_oldscopesp cx_u.cx_blk.blku_oldscopesp
#define blk_oldpm cx_u.cx_blk.blku_oldpm
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", \
+ cx->blk_gimme = (U8)gimme; \
+ 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). */
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(PerlIO_stderr(), "Leaving block %ld, type %s\n", \
+ DEBUG_SCOPE("POPBLOCK"); \
+ 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). */
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
+ PL_curpm = cx->blk_oldpm; \
+ DEBUG_SCOPE("TOPBLOCK");
/* substitution context */
struct subst {
#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 */
+/*
+=head1 "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 */
#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. */
-#define G_NOCATCH 64 /* Don't do CATCH_SET() */
+#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.
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 */
};
#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) \
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)
* PUTBACK/SPAGAIN to flush/refresh any local SP that may be active */
#define POPSTACK \
STMT_START { \
- djSP; \
+ dSP; \
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); \
POPSTACK; \
} \
} STMT_END
+
+#define IN_PERL_COMPILETIME (PL_curcop == &PL_compiling)
+#define IN_PERL_RUNTIME (PL_curcop != &PL_compiling)
+
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