X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=cop.h;h=5dd937e7d4a1b306dc8146c9b9b29ec3dcb319ba;hb=8c99d73ee7ce90de2561496f683f3850d1269e1d;hp=ede2fce591bf177cec85dc707f0bbfad712ce68f;hpb=146174a91a192983720a158796dc066226ad0e55;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/cop.h b/cop.h
index ede2fce..5dd937e 100644
--- a/cop.h
+++ b/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.
@@ -149,23 +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 ? savepv(n) : Nullch);		\
+	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.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;			\
-	Safefree(cx->blk_eval.old_name);
+	if (cx->blk_eval.old_namesv)					\
+	    sv_2mortal(cx->blk_eval.old_namesv);			\
+    } STMT_END
 
 /* loop context */
 struct block_loop {
@@ -194,12 +199,12 @@ struct block_loop {
 	    : &GvSV((GV*)(c)->blk_loop.iterdata))			\
 	 : (SV**)NULL)
 #  define CX_ITERDATA_SET(cx,idata)					\
-	if (cx->blk_loop.iterdata = (idata))				\
+	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))			\
+	if ((cx->blk_loop.itervar = (SV**)(ivar)))			\
 	    cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx));
 #endif
 
@@ -356,6 +361,7 @@ struct context {
 
 /* 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 */
@@ -369,10 +375,42 @@ struct context {
 #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 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 */