Importing Variable-Magic-0.11.tar.gz

[perl/modules/Variable-Magic.git] / Magic.xs

diff --git a/Magic.xs b/Magic.xs
index c81db042afbd9252fe76462b9a1e2906c30c183f..936e8cd0c5e166cbb16aeab755021498a43c99c1 100644 (file)
--- a/Magic.xs
+++ b/Magic.xs
@@ -12,10 +12,22 @@
 
 #define R(S) fprintf(stderr, "R(" #S ") = %d\n", SvREFCNT(S))
 
+#define PERL_VERSION_GE(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
+
 #define PERL_VERSION_LE(R, V, S) (PERL_REVISION < (R) || (PERL_REVISION == (R) && (PERL_VERSION < (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION <= (S))))))
 
 #define PERL_API_VERSION_GE(R, V, S) (PERL_API_REVISION > (R) || (PERL_API_REVISION == (R) && (PERL_API_VERSION > (V) || (PERL_API_VERSION == (V) && (PERL_API_SUBVERSION >= (S))))))
 
+#define PERL_API_VERSION_LE(R, V, S) (PERL_API_REVISION < (R) || (PERL_API_REVISION == (R) && (PERL_API_VERSION < (V) || (PERL_API_VERSION == (V) && (PERL_API_SUBVERSION <= (S))))))
+
+#ifndef VMG_PERL_PATCHLEVEL
+# ifdef PERL_PATCHNUM
+#  define VMG_PERL_PATCHLEVEL PERL_PATCHNUM
+# else
+#  define VMG_PERL_PATCHLEVEL 0
+# endif
+#endif
+
 /* --- Compatibility ------------------------------------------------------- */
 
 #ifndef Newx
@@ -56,6 +68,19 @@
 # define VMG_UVAR 0
 #endif
 
+#if (VMG_PERL_PATCHLEVEL >= 25854) || PERL_VERSION_GE(5, 9, 3)
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
+#else
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 0
+#endif
+
+/* since 5.9.5 - see #43357 */
+#if (VMG_PERL_PATCHLEVEL >= 31473) || PERL_VERSION_GE(5, 9, 5)
+# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 1
+#else
+# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0
+#endif
+
 #if VMG_UVAR
 
 /* Bug-free mg_magical - see http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2008-01/msg00036.html */
@@ -97,9 +122,9 @@ START_MY_CXT
 /* --- Signatures ---------------------------------------------------------- */
 
 #define SIG_MIN ((U16) (1u << 8))
-#define SIG_MAX ((U16) (1u << 16 - 1))
+#define SIG_MAX ((U16) ((1u << 16) - 1))
 #define SIG_NBR (SIG_MAX - SIG_MIN + 1)
-#define SIG_WIZ ((U16) (1u << 8 - 1))
+#define SIG_WIZ ((U16) ((1u << 8) - 1))
 
 /* ... Generate signatures ................................................. */
 
@@ -183,7 +208,6 @@ STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, AV *args) {
 
 STATIC SV *vmg_data_get(SV *sv, U16 sig) {
  MAGIC *mg, *moremagic;
- MGWIZ *w;
 
  if (SvTYPE(sv) >= SVt_PVMG) {
   for (mg = SvMAGIC(sv); mg; mg = moremagic) {
@@ -368,6 +392,7 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
 
 STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data) {
 #define vmg_cb_call(I, S, D) vmg_cb_call(aTHX_ (I), (S), (D))
+ SV *svr;
  int ret;
 
  dSP;
@@ -386,7 +411,8 @@ STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data) {
  SPAGAIN;
 
  if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
- ret = POPi;
+ svr = POPs;
+ ret = SvOK(svr) ? SvIV(svr) : 0;
 
  PUTBACK;
 
@@ -396,9 +422,10 @@ STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data) {
  return ret;
 }
 
-#if MGf_COPY || VMG_UVAR
+#if VMG_UVAR
 STATIC int vmg_cb_call2(pTHX_ SV *cb, SV *sv, SV *data, SV *sv2) {
 #define vmg_cb_call2(I, S, D, S2) vmg_cb_call2(aTHX_ (I), (S), (D), (S2))
+ SV *svr;
  int ret;
 
  dSP;
@@ -418,7 +445,8 @@ STATIC int vmg_cb_call2(pTHX_ SV *cb, SV *sv, SV *data, SV *sv2) {
  SPAGAIN;
 
  if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
- ret = POPi;
+ svr = POPs;
+ ret = SvOK(svr) ? SvIV(svr) : 0;
 
  PUTBACK;
 
@@ -427,7 +455,43 @@ STATIC int vmg_cb_call2(pTHX_ SV *cb, SV *sv, SV *data, SV *sv2) {
 
  return ret;
 }
-#endif /* MGf_COPY || VMG_UVAR */
+#endif /* VMG_UVAR */
+
+#if MGf_COPY
+STATIC int vmg_cb_call3(pTHX_ SV *cb, SV *sv, SV *data, SV *sv2, SV *sv3) {
+#define vmg_cb_call3(I, S, D, S2, S3) vmg_cb_call3(aTHX_ (I), (S), (D), (S2), (S3))
+ SV *svr;
+ int ret;
+
+ dSP;
+ int count;
+
+ ENTER;
+ SAVETMPS;
+
+ PUSHMARK(SP);
+ XPUSHs(sv_2mortal(newRV_inc(sv)));
+ XPUSHs(data ? data : &PL_sv_undef);
+ XPUSHs(sv2  ? sv2  : &PL_sv_undef);
+ if (sv3) { XPUSHs(sv3); }
+ PUTBACK;
+
+ count = call_sv(cb, G_SCALAR);
+
+ SPAGAIN;
+
+ if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
+ svr = POPs;
+ ret = SvOK(svr) ? SvIV(svr) : 0;
+
+ PUTBACK;
+
+ FREETMPS;
+ LEAVE;
+
+ return ret;
+}
+#endif /* MGf_COPY */
 
 STATIC int vmg_svt_get(pTHX_ SV *sv, MAGIC *mg) {
  return vmg_cb_call(SV2MGWIZ(mg->mg_ptr)->cb_get, sv, mg->mg_obj);
@@ -438,6 +502,8 @@ STATIC int vmg_svt_set(pTHX_ SV *sv, MAGIC *mg) {
 }
 
 STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
+ SV *svr;
+ I32 len;
  U32 ret;
 
  dSP;
@@ -450,7 +516,8 @@ STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
  XPUSHs(sv_2mortal(newRV_inc(sv)));
  XPUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
  if (SvTYPE(sv) == SVt_PVAV) {
-  XPUSHs(sv_2mortal(newSViv(av_len((AV *) sv) + 1)));
+  len = av_len((AV *) sv) + 1;
+  XPUSHs(sv_2mortal(newSViv(len)));
  }
  PUTBACK;
 
@@ -459,7 +526,9 @@ STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
  SPAGAIN;
 
  if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
- ret = POPi;
+ svr = POPs;
+ ret = SvOK(svr) ? SvUV(svr)
+                 : ((SvTYPE(sv) == SVt_PVAV) ? len : 1);
 
  PUTBACK;
 
@@ -482,8 +551,23 @@ STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
 }
 
 #if MGf_COPY
-STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, int namelen) {
- return vmg_cb_call2(SV2MGWIZ(mg->mg_ptr)->cb_copy, sv, mg->mg_obj, nsv);
+STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key, int keylen) {
+ SV *keysv;
+ int ret;
+
+ if (keylen == HEf_SVKEY) {
+  keysv = (SV *) key;
+ } else {
+  keysv = newSVpvn(key, keylen);
+ }
+
+ ret = vmg_cb_call3(SV2MGWIZ(mg->mg_ptr)->cb_copy, sv, mg->mg_obj, keysv, nsv);
+
+ if (keylen != HEf_SVKEY) {
+  SvREFCNT_dec(keysv);
+ }
+
+ return ret;
 }
 #endif /* MGf_COPY */
 
@@ -520,20 +604,21 @@ STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
    || (mg->mg_private < SIG_MIN)
    || (mg->mg_private > SIG_MAX)) { continue; }
   w = SV2MGWIZ(mg->mg_ptr);
+  if (!w->uvar) { continue; }
   switch (action) {
    case 0:
-    vmg_cb_call2(w->cb_fetch, sv, mg->mg_obj, key);
+    if (w->cb_fetch) { vmg_cb_call2(w->cb_fetch, sv, mg->mg_obj, key); }
     break;
    case HV_FETCH_ISSTORE:
    case HV_FETCH_LVALUE:
    case (HV_FETCH_ISSTORE|HV_FETCH_LVALUE):
-    vmg_cb_call2(w->cb_store, sv, mg->mg_obj, key);
+    if (w->cb_store) { vmg_cb_call2(w->cb_store, sv, mg->mg_obj, key); }
     break;
    case HV_FETCH_ISEXISTS:
-    vmg_cb_call2(w->cb_exists, sv, mg->mg_obj, key);
+    if (w->cb_exists) { vmg_cb_call2(w->cb_exists, sv, mg->mg_obj, key); }
     break;
    case HV_DELETE:
-    vmg_cb_call2(w->cb_delete, sv, mg->mg_obj, key);
+    if (w->cb_delete) { vmg_cb_call2(w->cb_delete, sv, mg->mg_obj, key); }
     break;
   }
  }
@@ -570,10 +655,10 @@ STATIC int vmg_wizard_free(pTHX_ SV *wiz, MAGIC *mg) {
 #endif /* MGf_COPY */
 #if MGf_DUP
  if (w->cb_dup   != NULL) { SvREFCNT_dec(SvRV(w->cb_dup)); }
-#endif /* MGf_COPY */
+#endif /* MGf_DUP */
 #if MGf_LOCAL
  if (w->cb_local != NULL) { SvREFCNT_dec(SvRV(w->cb_local)); }
-#endif /* MGf_COPY */
+#endif /* MGf_LOCAL */
 #if VMG_UVAR
  if (w->cb_fetch  != NULL) { SvREFCNT_dec(SvRV(w->cb_fetch)); }
  if (w->cb_store  != NULL) { SvREFCNT_dec(SvRV(w->cb_store)); }
@@ -600,7 +685,7 @@ STATIC MGVTBL vmg_wizard_vtbl = {
 #endif /* MGf_DUP */
 #if MGf_LOCAL
  NULL,            /* local */
-#endif /* MGf_DUP */
+#endif /* MGf_LOCAL */
 };
 
 STATIC const char vmg_invalid_wiz[]    = "Invalid wizard object";
@@ -664,6 +749,10 @@ BOOT:
  newCONSTSUB(stash, "MGf_DUP",   newSVuv(MGf_DUP));
  newCONSTSUB(stash, "MGf_LOCAL", newSVuv(MGf_LOCAL));
  newCONSTSUB(stash, "VMG_UVAR",  newSVuv(VMG_UVAR));
+ newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_NOLEN",
+                    newSVuv(VMG_COMPAT_ARRAY_PUSH_NOLEN));
+ newCONSTSUB(stash, "VMG_COMPAT_ARRAY_UNDEF_CLEAR",
+                    newSVuv(VMG_COMPAT_ARRAY_UNDEF_CLEAR));
 }
 
 SV *_wizard(...)
@@ -700,7 +789,7 @@ CODE:
  if (SvOK(svsig)) {
   SV **old;
   sig = vmg_sv2sig(svsig);
-  if (old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0)) {
+  if ((old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0))) {
    ST(0) = sv_2mortal(newRV_inc(*old));
    XSRETURN(1);
   }
@@ -781,7 +870,7 @@ CODE:
   char buf[8];
   SV **old;
   U16 sig = vmg_sv2sig(wiz);
-  if (old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0)) {
+  if ((old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0))) {
    wiz = *old;
   } else {
    XSRETURN_UNDEF;