/* cop.h
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others
+ * 2000, 2001, 2002, 2003, 2004, 2005, 2006 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.
# define CopFILESV(c) (CopFILE(c) \
? GvSV(gv_fetchfile(CopFILE(c))) : Nullsv)
# define CopFILEAV(c) (CopFILE(c) \
- ? GvAV(gv_fetchfile(CopFILE(c))) : Nullav)
+ ? GvAV(gv_fetchfile(CopFILE(c))) : NULL)
+# ifdef DEBUGGING
+# define CopFILEAVx(c) (assert(CopFILE(c)), \
+ GvAV(gv_fetchfile(CopFILE(c))))
+# else
+# define CopFILEAVx(c) (GvAV(gv_fetchfile(CopFILE(c))))
+# endif
# define CopSTASHPV(c) ((c)->cop_stashpv)
# ifdef NETWARE
# endif
# define CopSTASH(c) (CopSTASHPV(c) \
- ? gv_stashpv(CopSTASHPV(c),GV_ADD) : Nullhv)
+ ? gv_stashpv(CopSTASHPV(c),GV_ADD) : NULL)
# 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 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 CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : NULL)
+# ifdef DEBUGGING
+# define CopFILEAVx(c) (assert(CopFILEGV(c)), GvAV(CopFILEGV(c)))
+# else
+# define CopFILEAVx(c) (GvAV(CopFILEGV(c)))
+# endif
# define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : Nullch)
# define CopSTASH(c) ((c)->cop_stash)
# define CopSTASH_set(c,hv) ((c)->cop_stash = (hv))
cx->blk_loop.next_op = cLOOP->op_nextop; \
cx->blk_loop.last_op = cLOOP->op_lastop; \
cx->blk_loop.iterlval = Nullsv; \
- cx->blk_loop.iterary = Nullav; \
+ cx->blk_loop.iterary = NULL; \
cx->blk_loop.iterix = -1; \
CX_ITERDATA_SET(cx,dat);
#define POPLOOP(cx) \
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 (SvPADMY(cx->blk_loop.itersave)) { \
+ SV **s_v_p = CxITERVAR(cx); \
+ sv_2mortal(*s_v_p); \
+ *s_v_p = cx->blk_loop.itersave; \
+ } \
+ else { \
+ SvREFCNT_dec(cx->blk_loop.itersave); \
+ } \
} \
if (cx->blk_loop.iterary && cx->blk_loop.iterary != PL_curstack)\
SvREFCNT_dec(cx->blk_loop.iterary);
+/* given/when context */
+struct block_givwhen {
+ OP *leave_op;
+};
+
+#define PUSHGIVEN(cx) \
+ cx->blk_givwhen.leave_op = cLOGOP->op_other;
+
+#define PUSHWHEN PUSHGIVEN
+
/* context common to subroutines, evals and loops */
struct block {
I32 blku_oldsp; /* stack pointer to copy stuff down to */
struct block_sub blku_sub;
struct block_eval blku_eval;
struct block_loop blku_loop;
+ struct block_givwhen blku_givwhen;
} blk_u;
};
#define blk_oldsp cx_u.cx_blk.blku_oldsp
#define blk_sub cx_u.cx_blk.blk_u.blku_sub
#define blk_eval cx_u.cx_blk.blk_u.blku_eval
#define blk_loop cx_u.cx_blk.blk_u.blku_loop
+#define blk_givwhen cx_u.cx_blk.blk_u.blku_givwhen
/* Enter a block. */
#define PUSHBLOCK(cx,t,sp) CXINC, cx = &cxstack[cxstack_ix], \
#define CXt_SUBST 4
#define CXt_BLOCK 5
#define CXt_FORMAT 6
+#define CXt_GIVEN 7
+#define CXt_WHEN 8
+
+/* private flags for CXt_SUB and CXt_NULL */
+#define CXp_MULTICALL 0x00000400 /* part of a multicall (so don't
+ tear down context on exit). */
/* 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_FOREACH 0x00000200 /* a foreach loop */
+#define CXp_FOR_DEF 0x00000400 /* foreach using $_ */
+#ifdef USE_ITHREADS
# define CXp_PADVAR 0x00000100 /* itervar lives on pad, iterdata
has pad offset; if not set,
iterdata holds GV* */
#endif
#define CxTYPE(c) ((c)->cx_type & CXTYPEMASK)
+#define CxMULTICALL(c) (((c)->cx_type & CXp_MULTICALL) \
+ == CXp_MULTICALL)
#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 CxFOREACH(c) (((c)->cx_type & (CXt_LOOP|CXp_FOREACH)) \
+ == (CXt_LOOP|CXp_FOREACH))
+#define CxFOREACHDEF(c) (((c)->cx_type & (CXt_LOOP|CXp_FOREACH|CXp_FOR_DEF))\
+ == (CXt_LOOP|CXp_FOREACH|CXp_FOR_DEF))
#define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc()))
#define POPSTACK \
STMT_START { \
dSP; \
- PERL_SI *prev = PL_curstackinfo->si_prev; \
+ PERL_SI * const prev = PL_curstackinfo->si_prev; \
if (!prev) { \
PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \
my_exit(1); \
#define IN_PERL_COMPILETIME (PL_curcop == &PL_compiling)
#define IN_PERL_RUNTIME (PL_curcop != &PL_compiling)
+/*
+=head1 Multicall Functions
+
+=for apidoc Ams||dMULTICALL
+Declare local variables for a multicall. See L<perlcall/Lightweight Callbacks>.
+
+=for apidoc Ams||PUSH_MULTICALL
+Opening bracket for a lightweight callback.
+See L<perlcall/Lightweight Callbacks>.
+
+=for apidoc Ams||MULTICALL
+Make a lightweight callback. See L<perlcall/Lightweight Callbacks>.
+
+=for apidoc Ams||POP_MULTICALL
+Closing bracket for a lightweight callback.
+See L<perlcall/Lightweight Callbacks>.
+
+=cut
+*/
+
+#define dMULTICALL \
+ SV **newsp; /* set by POPBLOCK */ \
+ PERL_CONTEXT *cx; \
+ CV *multicall_cv; \
+ OP *multicall_cop; \
+ bool multicall_oldcatch; \
+ U8 hasargs = 0 /* used by PUSHSUB */
+
+#define PUSH_MULTICALL(the_cv) \
+ STMT_START { \
+ CV * const _nOnclAshIngNamE_ = the_cv; \
+ CV * const cv = _nOnclAshIngNamE_; \
+ AV * const padlist = CvPADLIST(cv); \
+ ENTER; \
+ multicall_oldcatch = CATCH_GET; \
+ SAVETMPS; SAVEVPTR(PL_op); \
+ CATCH_SET(TRUE); \
+ PUSHBLOCK(cx, CXt_SUB|CXp_MULTICALL, PL_stack_sp); \
+ PUSHSUB(cx); \
+ if (++CvDEPTH(cv) >= 2) { \
+ PERL_STACK_OVERFLOW_CHECK(); \
+ Perl_pad_push(aTHX_ padlist, CvDEPTH(cv)); \
+ } \
+ SAVECOMPPAD(); \
+ PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); \
+ multicall_cv = cv; \
+ multicall_cop = CvSTART(cv); \
+ } STMT_END
+
+#define MULTICALL \
+ STMT_START { \
+ PL_op = multicall_cop; \
+ CALLRUNOPS(aTHX); \
+ } STMT_END
+
+#define POP_MULTICALL \
+ STMT_START { \
+ LEAVESUB(multicall_cv); \
+ CvDEPTH(multicall_cv)--; \
+ POPBLOCK(cx,PL_curpm); \
+ CATCH_SET(multicall_oldcatch); \
+ LEAVE; \
+ } STMT_END
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