Remove space

[perl5.git] / XSUB.h

diff --git a/XSUB.h b/XSUB.h
index 7c059c1..b3e586c 100644 (file)
--- a/XSUB.h
+++ b/XSUB.h
@@ -54,6 +54,10 @@ C<xsubpp>.
 Sets up the C<ax> variable.
 This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>.
 
+=for apidoc Ams||dAXMARK
+Sets up the C<ax> variable and stack marker variable C<mark>.
+This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>.
+
 =for apidoc Ams||dITEMS
 Sets up the C<items> variable.
 This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>.
@@ -78,23 +82,53 @@ is a lexical $_ in scope.
 =cut
 */
 
+#ifndef PERL_UNUSED_ARG
+#  ifdef lint
+#    include <note.h>
+#    define PERL_UNUSED_ARG(x) NOTE(ARGUNUSED(x))
+#  else
+#    define PERL_UNUSED_ARG(x) ((void)x)
+#  endif
+#endif
+#ifndef PERL_UNUSED_VAR
+#  define PERL_UNUSED_VAR(x) ((void)x)
+#endif
+
 #define ST(off) PL_stack_base[ax + (off)]
 
+#undef XS
 #if defined(__CYGWIN__) && defined(USE_DYNAMIC_LOADING)
 #  define XS(name) __declspec(dllexport) void name(pTHX_ CV* cv)
-#else
-#  define XS(name) void name(pTHX_ CV* cv)
 #endif
+#if defined(__SYMBIAN32__)
+#  define XS(name) EXPORT_C void name(pTHX_ CV* cv)
+#endif
+#ifndef XS
+#  ifdef HASATTRIBUTE_UNUSED
+#    define XS(name) void name(pTHX_ CV* cv __attribute__unused__)
+#  else
+#    define XS(name) void name(pTHX_ CV* cv)
+#  endif
+#endif
+
+#define dAX const I32 ax = MARK - PL_stack_base + 1
 
-#define dAX I32 ax = MARK - PL_stack_base + 1
+#define dAXMARK                                \
+       I32 ax = POPMARK;       \
+       register SV **mark = PL_stack_base + ax++
 
 #define dITEMS I32 items = SP - MARK
 
-#define dXSARGS                                \
-       dSP; dMARK;                     \
-       dAX; dITEMS
+#ifdef lint
+#  define dXSARGS \
+       NOTE(ARGUNUSED(cv)) \
+       dSP; dAXMARK; dITEMS
+#else
+#  define dXSARGS \
+       dSP; dAXMARK; dITEMS
+#endif
 
-#define dXSTARG SV * targ = ((PL_op->op_private & OPpENTERSUB_HASTARG) \
+#define dXSTARG SV * const targ = ((PL_op->op_private & OPpENTERSUB_HASTARG) \
                             ? PAD_SV(PL_op->op_targ) : sv_newmortal())
 
 /* Should be used before final PUSHi etc. if not in PPCODE section. */
@@ -195,7 +229,7 @@ C<xsubpp>.  See L<perlxs/"The VERSIONCHECK: Keyword">.
 =head1 Simple Exception Handling Macros
 
 =for apidoc Ams||dXCPT
-Set up neccessary local variables for exception handling.
+Set up necessary local variables for exception handling.
 See L<perlguts/"Exception Handling">.
 
 =for apidoc AmU||XCPT_TRY_START
@@ -244,8 +278,8 @@ Rethrows a previously caught exception.  See L<perlguts/"Exception Handling">.
 #ifdef XS_VERSION
 #  define XS_VERSION_BOOTCHECK \
     STMT_START {                                                       \
-       SV *_sv; STRLEN n_a;                                            \
-       const char *vn = Nullch, *module = SvPV(ST(0),n_a);             \
+       SV *_sv;                                                        \
+       const char *vn = Nullch, *module = SvPV_nolen_const(ST(0));     \
        if (items >= 2)  /* version supplied as bootstrap arg */        \
            _sv = ST(1);                                                \
        else {                                                          \
@@ -286,7 +320,7 @@ Rethrows a previously caught exception.  See L<perlguts/"Exception Handling">.
 */
 
 #define DBM_setFilter(db_type,code)                            \
-       {                                                       \
+       STMT_START {                                            \
            if (db_type)                                        \
                RETVAL = sv_mortalcopy(db_type) ;               \
            ST(0) = RETVAL ;                                    \
@@ -300,9 +334,10 @@ Rethrows a previously caught exception.  See L<perlguts/"Exception Handling">.
                else                                            \
                    db_type = newSVsv(code) ;                   \
            }                                                   \
-       }
+       } STMT_END
 
 #define DBM_ckFilter(arg,type,name)                            \
+        STMT_START {                                           \
        if (db->type) {                                         \
            if (db->filtering) {                                \
                croak("recursion detected in %s", name) ;       \
@@ -327,7 +362,7 @@ Rethrows a previously caught exception.  See L<perlguts/"Exception Handling">.
                 arg = sv_2mortal(arg);                          \
             }                                                   \
             SvOKp(arg);                                         \
-       }
+       } } STMT_END                                                     
 
 #if 1          /* for compatibility */
 #  define VTBL_sv              &PL_vtbl_sv
@@ -585,3 +620,13 @@ Rethrows a previously caught exception.  See L<perlguts/"Exception Handling">.
 #endif  /* PERL_IMPLICIT_SYS && !PERL_CORE */
 
 #endif /* _INC_PERL_XSUB_H */          /* include guard */
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */