X-Git-Url: http://git.vpit.fr/?a=blobdiff_plain;f=Upper.xs;h=89083850cd9209579c880f9bade1d22e89bfbb74;hb=f43a242b7a060b39234a12159de86b2bf56ff37a;hp=612ce2efb5bb4e46a6e700198861527eefcd1812;hpb=fd04ca94303855f0a62f74f7b8ed06452697f7a1;p=perl%2Fmodules%2FScope-Upper.git

diff --git a/Upper.xs b/Upper.xs
index 612ce2e..8908385 100644
--- a/Upper.xs
+++ b/Upper.xs
@@ -48,14 +48,6 @@
 # define HvNAME_get(H) HvNAME(H)
 #endif
 
-#ifndef ENTER_with_name
-# define ENTER_with_name(N) ENTER
-#endif
-
-#ifndef LEAVE_with_name
-# define LEAVE_with_name(N) LEAVE
-#endif
-
 #ifndef gv_fetchpvn_flags
 # define gv_fetchpvn_flags(A, B, C, D) gv_fetchpv((A), (C), (D))
 #endif
@@ -296,7 +288,7 @@ STATIC void su_call(pTHX_ void *ud_) {
  SU_D({
   PerlIO_printf(Perl_debug_log,
                 "%p: @@@ call\n%p: depth=%2d scope_ix=%2d save_ix=%2d\n",
-                 ud,           ud, PL_scopestack_ix, PL_savestack_ix);
+                 ud, ud, SU_UD_DEPTH(ud), PL_scopestack_ix, PL_savestack_ix);
  });
 
  ENTER;
@@ -349,23 +341,20 @@ STATIC void su_reap(pTHX_ void *ud) {
 
 typedef struct {
  su_ud_common ci;
- SV *sv;
- SV *val;
- SV *elem;
+ SV    *sv;
+ SV    *val;
+ SV    *elem;
+ svtype type;
 } su_ud_localize;
 
-STATIC void su_localize(pTHX_ void *ud_) {
-#define su_localize(U) su_localize(aTHX_ (U))
- su_ud_localize *ud = (su_ud_localize *) ud_;
- SV *sv   = ud->sv;
- SV *val  = ud->val;
- SV *elem = ud->elem;
- GV *gv;
+STATIC void su_ud_localize_init(pTHX_ su_ud_localize *ud, SV *sv, SV *val, SV *elem) {
+#define su_ud_localize_init(UD, S, V, E) su_ud_localize_init(aTHX_ (UD), (S), (V), (E))
  UV deref = 0;
  svtype t = SVt_NULL;
 
+ SvREFCNT_inc(sv);
+
  if (SvTYPE(sv) >= SVt_PVGV) {
-  gv = (GV *) sv;
   if (!val || !SvROK(val)) { /* local *x; or local *x = $val; */
    t = SVt_PVGV;
   } else {                   /* local *x = \$val; */
@@ -398,7 +387,45 @@ STATIC void su_localize(pTHX_ void *ud_) {
     t = SvTYPE(val);
    }
   }
-  gv = gv_fetchpvn_flags(s, l, GV_ADDMULTI, SVt_PVGV);
+  SvREFCNT_dec(sv);
+  sv = newSVpvn(s, l);
+ }
+
+ switch (t) {
+  case SVt_PVAV:
+  case SVt_PVHV:
+  case SVt_PVCV:
+  case SVt_PVGV:
+   deref = 0;
+   break;
+ }
+ /* When deref is set, val isn't NULL */
+
+ ud->sv   = sv;
+ ud->val  = val ? newSVsv(deref ? SvRV(val) : val) : NULL;
+ ud->elem = SvREFCNT_inc(elem);
+ ud->type = t;
+}
+
+STATIC void su_localize(pTHX_ void *ud_) {
+#define su_localize(U) su_localize(aTHX_ (U))
+ su_ud_localize *ud = (su_ud_localize *) ud_;
+ SV *sv   = ud->sv;
+ SV *val  = ud->val;
+ SV *elem = ud->elem;
+ svtype t = ud->type;
+ GV *gv;
+
+ if (SvTYPE(sv) >= SVt_PVGV) {
+  gv = (GV *) sv;
+ } else {
+#ifdef gv_fetchsv
+  gv = gv_fetchsv(sv, GV_ADDMULTI, SVt_PVGV);
+#else
+  STRLEN len;
+  const char *name = SvPV_const(sv, len);
+  gv = gv_fetchpvn_flags(name, len, GV_ADDMULTI, SVt_PVGV);
+#endif
  }
 
  SU_D({
@@ -436,8 +463,6 @@ STATIC void su_localize(pTHX_ void *ud_) {
    break;
   default:
    gv = (GV *) save_scalar(gv);
-   if (deref) /* val != NULL */
-    val = SvRV(val);
    break;
  }
 
@@ -466,12 +491,13 @@ STATIC void su_pop(pTHX_ void *ud) {
  I32 depth, base, mark, *origin;
  depth = SU_UD_DEPTH(ud);
 
- SU_D({
-  PerlIO_printf(Perl_debug_log, "%p: --- pop a %s\n", ud, SU_CXNAME);
+ SU_D(
   PerlIO_printf(Perl_debug_log,
-    "%p: leave scope at depth=%2d scope_ix=%2d cur_top=%2d cur_base=%2d\n", ud,
-     depth, PL_scopestack_ix, PL_savestack_ix, PL_scopestack[PL_scopestack_ix]);
- });
+   "%p: --- pop a %s\n"
+   "%p: leave scope     at depth=%2d scope_ix=%2d cur_top=%2d cur_base=%2d\n",
+    ud, SU_CXNAME,
+    ud, depth, PL_scopestack_ix,PL_savestack_ix,PL_scopestack[PL_scopestack_ix])
+ );
 
  origin = SU_UD_ORIGIN(ud);
  mark   = origin[depth];
@@ -479,7 +505,7 @@ STATIC void su_pop(pTHX_ void *ud) {
 
  SU_D(PerlIO_printf(Perl_debug_log,
                     "%p: original scope was %*c top=%2d     base=%2d\n",
-                     ud,                20, ' ',    mark,        base));
+                     ud,                24, ' ',    mark,        base));
 
  if (base < mark) {
   SU_D(PerlIO_printf(Perl_debug_log, "%p: clear leftovers\n", ud));
@@ -491,11 +517,30 @@ STATIC void su_pop(pTHX_ void *ud) {
  SU_UD_DEPTH(ud) = --depth;
 
  if (depth > 0) {
-  SU_D(PerlIO_printf(Perl_debug_log,
-          "%p: set new destructor at depth=%2d scope_ix=%2d save_ix=%2d\n",
-           ud,                       depth, PL_scopestack_ix, PL_savestack_ix));
+  I32 i = 1;
 
   SAVEDESTRUCTOR_X(su_pop, ud);
+
+  /* Skip depths corresponding to scopes for which leave_scope() might not be
+   * called. */
+  while (depth > 1 && PL_scopestack_ix >= i) {
+   I32 j = PL_scopestack[PL_scopestack_ix - i];
+
+   if (j < PL_savestack_ix)
+    break;
+
+   SU_D(PerlIO_printf(Perl_debug_log,
+    "%p: skip scope%*cat depth=%2d scope_ix=%2d new_top=%2d >= cur_base=%2d\n",
+     ud,           6, ' ',   depth, PL_scopestack_ix - i, j, PL_savestack_ix));
+
+   SU_UD_DEPTH(ud) = --depth;
+
+   ++i;
+  }
+
+  SU_D(PerlIO_printf(Perl_debug_log,
+         "%p: set destructor  at depth=%2d scope_ix=%2d save_ix=%2d\n",
+          ud,                        depth, PL_scopestack_ix, PL_savestack_ix));
  } else {
   SU_UD_HANDLER(ud)(aTHX_ ud);
  }
@@ -505,18 +550,25 @@ STATIC void su_pop(pTHX_ void *ud) {
                      ud, PL_savestack_ix, PL_scopestack[PL_scopestack_ix]));
 }
 
+/* --- Global data --------------------------------------------------------- */
+
+#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
+
+typedef struct {
+ int stack_placeholder;
+ I32 cxix;
+ I32 items;
+ SV  **savesp;
+ OP  fakeop;
+} my_cxt_t;
+
+START_MY_CXT
+
 /* --- Initialize the stack and the action userdata ------------------------ */
 
 STATIC I32 su_init(pTHX_ I32 cxix, void *ud, I32 size) {
 #define su_init(L, U, S) su_init(aTHX_ (L), (U), (S))
- I32 i, depth = 0, *origin;
-
- LEAVE_with_name("sub");
-
- if (cxix >= cxstack_ix) {
-  SU_UD_HANDLER(ud)(aTHX_ ud);
-  goto done;
- }
+ I32 i, depth = 1, *origin;
 
  SU_D(PerlIO_printf(Perl_debug_log, "%p: ### init for cx %d\n", ud, cxix));
 
@@ -572,6 +624,15 @@ STATIC I32 su_init(pTHX_ I32 cxix, void *ud, I32 size) {
         "%p: set original destructor at depth=%2d scope_ix=%2d save_ix=%2d\n",
          ud,                     depth, PL_scopestack_ix - 1, PL_savestack_ix));
 
+ /* Make sure the first destructor fires by pushing enough fake slots on the
+  * stack. */
+ if (PL_savestack_ix + 3 <= PL_scopestack[PL_scopestack_ix - 1]) {
+  dMY_CXT;
+  do {
+   save_int(&MY_CXT.stack_placeholder);
+  } while (PL_savestack_ix + 3 <= PL_scopestack[PL_scopestack_ix - 1]);
+ }
+
  SAVEDESTRUCTOR_X(su_pop, ud);
 
  SU_D({
@@ -584,25 +645,9 @@ STATIC I32 su_init(pTHX_ I32 cxix, void *ud, I32 size) {
   }
  });
 
-done:
- ENTER_with_name("sub");
-
  return depth;
 }
 
-/* --- Global data --------------------------------------------------------- */
-
-#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
-
-typedef struct {
- I32 cxix;
- I32 items;
- SV  **savesp;
- OP  fakeop;
-} my_cxt_t;
-
-START_MY_CXT
-
 /* --- Unwind stack -------------------------------------------------------- */
 
 STATIC void su_unwind(pTHX_ void *ud_) {
@@ -752,10 +797,14 @@ PROTOTYPES: ENABLE
 BOOT:
 {
  HV *stash;
+
  MY_CXT_INIT;
+ MY_CXT.stack_placeholder = 0;
+
  stash = gv_stashpv(__PACKAGE__, 1);
  newCONSTSUB(stash, "TOP",           newSViv(0));
  newCONSTSUB(stash, "SU_THREADSAFE", newSVuv(SU_THREADSAFE));
+
  newXSproto("Scope::Upper::unwind", XS_Scope__Upper_unwind, file, NULL);
 }
 
@@ -931,17 +980,19 @@ localize(SV *sv, SV *val, ...)
 PROTOTYPE: $$;$
 PREINIT:
  I32 cxix;
+ I32 size = 3;
  su_ud_localize *ud;
 CODE:
  SU_GET_CONTEXT(2, 2);
  Newx(ud, 1, su_ud_localize);
  SU_UD_ORIGIN(ud)  = NULL;
  SU_UD_HANDLER(ud) = su_localize;
- SvREFCNT_inc(sv);
- ud->sv   = sv;
- ud->val  = newSVsv(val);
- ud->elem = NULL;
- su_init(cxix, ud, 3);
+ su_ud_localize_init(ud, sv, val, NULL);
+#if !SU_HAS_PERL(5, 8, 9)
+ if (ud->type >= SVt_PVGV)
+  size = 6;
+#endif
+ su_init(cxix, ud, size);
 
 void
 localize_elem(SV *sv, SV *elem, SV *val, ...)
@@ -954,11 +1005,7 @@ CODE:
  Newx(ud, 1, su_ud_localize);
  SU_UD_ORIGIN(ud)  = NULL;
  SU_UD_HANDLER(ud) = su_localize;
- SvREFCNT_inc(sv);
- ud->sv   = sv;
- ud->val  = newSVsv(val);
- SvREFCNT_inc(elem);
- ud->elem = elem;
+ su_ud_localize_init(ud, sv, val, elem);
  su_init(cxix, ud, 4);
 
 void
@@ -966,15 +1013,16 @@ localize_delete(SV *sv, SV *elem, ...)
 PROTOTYPE: $$;$
 PREINIT:
  I32 cxix;
+ I32 size = 4;
  su_ud_localize *ud;
 CODE:
  SU_GET_CONTEXT(2, 2);
  Newx(ud, 1, su_ud_localize);
  SU_UD_ORIGIN(ud)  = NULL;
  SU_UD_HANDLER(ud) = su_localize;
- SvREFCNT_inc(sv);
- ud->sv   = sv;
- ud->val  = NULL;
- SvREFCNT_inc(elem);
- ud->elem = elem;
- su_init(cxix, ud, 4);
+ su_ud_localize_init(ud, sv, NULL, elem);
+#if !SU_HAS_PERL(5, 8, 9)
+ if (ud->type >= SVt_PVGV)
+  size = 6;
+#endif
+ su_init(cxix, ud, size);