X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=cop.h;h=238c677bb4d8393513c50ba4e9cf8fa523fcf81a;hb=cc49e20bd7575d1d37e92731860d63daa4d52ecc;hp=69bc1ac6107a835f47baae8a824a2c89df6474a7;hpb=22c35a8c2392967a5ba6b5370695be464bd7012c;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/cop.h b/cop.h
index 69bc1ac..238c677 100644
--- a/cop.h
+++ b/cop.h
@@ -1,6 +1,6 @@
 /*    cop.h
  *
- *    Copyright (c) 1991-1997, Larry Wall
+ *    Copyright (c) 1991-1999, 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.
@@ -20,6 +20,14 @@ struct cop {
 
 #define Nullcop Null(COP*)
 
+#define CopFILEGV(c)		(c)->cop_filegv
+#define CopFILEGV_set(c,gv)	((c)->cop_filegv = gv)
+#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 CopLINE(c)		((c)->cop_line)
+#define CopLINE_set(c,l)	((c)->cop_line = (l))
+
 /*
  * Here we have some enormously heavy (or at least ponderous) wizardry.
  */
@@ -35,12 +43,15 @@ 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;						\
@@ -49,35 +60,40 @@ 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
 #else
 #define POPSAVEARRAY()							\
     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) {						\
+#define POPSUB(cx,sv)							\
+    STMT_START {							\
+	if (cx->blk_sub.hasargs) {					\
 	    POPSAVEARRAY();						\
-	    /* destroy arg array */					\
-	    av_clear(cxsub.argarray);					\
-	    AvREAL_off(cxsub.argarray);					\
+	    /* 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;		\
+	    }								\
 	}								\
-	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);					\
@@ -94,9 +110,9 @@ struct block_eval {
 
 #define PUSHEVAL(cx,n,fgv)						\
 	cx->blk_eval.old_in_eval = PL_in_eval;				\
-	cx->blk_eval.old_op_type = PL_op->op_type;				\
+	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.old_eval_root = PL_eval_root;			\
 	cx->blk_eval.cur_text = PL_linestr;
 
 #define POPEVAL(cx)							\
@@ -120,8 +136,8 @@ struct block_loop {
 };
 
 #define PUSHLOOP(cx, ivar, s)						\
-	cx->blk_loop.label = PL_curcop->cop_label;				\
-	cx->blk_loop.resetsp = s - PL_stack_base;				\
+	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;			\
@@ -132,22 +148,13 @@ struct block_loop {
 	cx->blk_loop.iterix = -1;
 
 #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 (cx->blk_loop.itervar) {					\
+	    sv_2mortal(*(cx->blk_loop.itervar));			\
+	    *(cx->blk_loop.itervar) = 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 {
@@ -181,29 +188,29 @@ struct block {
 	cx->cx_type		= t,					\
 	cx->blk_oldsp		= sp - PL_stack_base,			\
 	cx->blk_oldcop		= PL_curcop,				\
-	cx->blk_oldmarksp	= PL_markstack_ptr - PL_markstack,		\
+	cx->blk_oldmarksp	= PL_markstack_ptr - PL_markstack,	\
 	cx->blk_oldscopesp	= PL_scopestack_ix,			\
-	cx->blk_oldretsp	= PL_retstack_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, PL_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		 = PL_stack_base + cx->blk_oldsp,			\
+	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(PerlIO_stderr(), "Leaving block %ld, type %s\n",		\
+	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],			\
-	PL_stack_sp	 = PL_stack_base + cx->blk_oldsp,			\
+	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,				\
@@ -213,7 +220,7 @@ 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;
@@ -228,7 +235,7 @@ 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
@@ -244,7 +251,7 @@ 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,				\
@@ -291,13 +298,19 @@ struct context {
 #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.
  */
@@ -357,11 +370,14 @@ typedef struct stackinfo PERL_SI;
 
 #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);			\