From: Florian Ragwitz <rafl@debian.org>
Date: Sat, 18 Oct 2008 08:32:18 +0000 (+0000)
Subject: Port to B::Hooks::OP::Check::EntersubForCV.
X-Git-Tag: 0.001001~1^2~6
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=p5sagit%2FDevel-BeginLift.git;a=commitdiff_plain;h=5e5bdebbcf6d4b0d9b155dd7a71e3293da12db51

Port to B::Hooks::OP::Check::EntersubForCV.
---

diff --git a/BeginLift.xs b/BeginLift.xs
index 339f538..dd68f18 100644
--- a/BeginLift.xs
+++ b/BeginLift.xs
@@ -6,71 +6,18 @@
 #include <stdio.h>
 #include <string.h>
 
+#include "hook_op_check_entersubforcv.h"
+
 /* lifted from op.c */
 
 #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o))
 
-/* pointer to old PL_check entersub entry to be populated in init */
-
-STATIC OP *(*dbl_old_ck_entersub)(pTHX_ OP *op);
-
-/* replacement PL_check entersub entry */
-
-STATIC OP *dbl_ck_entersub(pTHX_ OP *o) {
+STATIC OP *lift_cb(pTHX_ OP *o, CV *cv, void *user_data) {
   dSP;
-  OP *kid;
-  OP *last;
-  OP *curop;
-  OP *saved_next;
-  HV *stash;
-  I32 type = o->op_type;
   SV *sv;
-  SV** stack_save;
-  HV* to_lift;
-  SV** to_lift_pack_ref;
-  HV* to_lift_pack_hash;
-  SV** to_lift_flag_ref;
-
-  o = dbl_old_ck_entersub(aTHX_ o); /* let the original do its job */
-
-  kid = cUNOPo->op_first;
-
-  if (kid->op_type != OP_NULL) /* pushmark for method call ... */
-    return o;
-
-  last = kLISTOP->op_last;
-
-  if (last->op_type != OP_NULL) /* not what we expected */
-    return o;
-
-  kid = cUNOPx(last)->op_first;
-
-  if (kid->op_type != OP_GV) /* not a GV so ignore */
-    return o;
-
-  stash = GvSTASH(kGVOP_gv);
-
-  /* printf("Calling GV %s -> %s\n",
-    HvNAME(stash), GvNAME(kGVOP_gv)); */
-
-  to_lift = get_hv("Devel::BeginLift::lift", FALSE);
-
-  if (!to_lift)
-    return o;
-
-  to_lift_pack_ref = hv_fetch(to_lift, HvNAME(stash), strlen(HvNAME(stash)),
-                               FALSE);
-
-  if (!to_lift_pack_ref || !SvROK(*to_lift_pack_ref))
-    return o; /* not a hashref */
-
-  to_lift_pack_hash = (HV*) SvRV(*to_lift_pack_ref);
-
-  to_lift_flag_ref = hv_fetch(to_lift_pack_hash, GvNAME(kGVOP_gv),
-                                strlen(GvNAME(kGVOP_gv)), FALSE);
-
-  if (!to_lift_flag_ref || !SvTRUE(*to_lift_flag_ref))
-    return o;
+  SV **stack_save;
+  OP *curop, *kid, *saved_next;
+  I32 type = o->op_type;
 
   /* shamelessly lifted from fold_constants in op.c */
 
@@ -146,25 +93,18 @@ STATIC OP *dbl_ck_entersub(pTHX_ OP *o) {
   }
 }
 
-static int initialized = 0;
-
 MODULE = Devel::BeginLift  PACKAGE = Devel::BeginLift
 
 PROTOTYPES: DISABLE
 
-void
-setup()
+UV
+_setup (CV *cv)
   CODE:
-  if (!initialized++) {
-    dbl_old_ck_entersub = PL_check[OP_ENTERSUB];
-    PL_check[OP_ENTERSUB] = dbl_ck_entersub;
-  }
+    RETVAL = (UV)hook_op_check_entersubforcv (cv, lift_cb, NULL);
+  OUTPUT:
+    RETVAL
 
 void
-teardown()
+_teardown (UV id)
   CODE:
-  /* ensure we only uninit when number of teardown calls matches 
-     number of setup calls */
-  if (initialized && !--initialized) {
-    PL_check[OP_ENTERSUB] = dbl_old_ck_entersub;
-  }
+    hook_op_check_entersubforcv_remove ((hook_op_check_id)id);
diff --git a/Makefile.PL b/Makefile.PL
index ef6e4e3..ed0c368 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -1,12 +1,21 @@
 use inc::Module::Install 0.67;
 
+use ExtUtils::Depends;
+
 name 'Devel-BeginLift';
 all_from 'lib/Devel/BeginLift.pm';
 
 build_requires 'Test::More';
+build_requires 'B::Hooks::OP::Check::EntersubForCV';
+
+configure_requires 'ExtUtils::Depends';
+configure_requires 'B::Hooks::OP::Check::EntersubForCV';
+
+my $pkg = ExtUtils::Depends->new('Devel::Declare', 'B::Hooks::OP::Check::EntersubForCV');
 
 WriteMakefile(
   dist => {
     PREOP => 'pod2text lib/Devel/BeginLift.pm >$(DISTVNAME)/README'
-  }
+  },
+  $pkg->get_makefile_vars,
 );
diff --git a/lib/Devel/BeginLift.pm b/lib/Devel/BeginLift.pm
index c8341b0..98d5fd0 100644
--- a/lib/Devel/BeginLift.pm
+++ b/lib/Devel/BeginLift.pm
@@ -8,6 +8,7 @@ our $VERSION = 0.001000;
 
 use vars qw(%lift);
 use base qw(DynaLoader);
+use B::Hooks::OP::Check::EntersubForCV;
 
 bootstrap Devel::BeginLift;
 
@@ -25,14 +26,20 @@ sub unimport {
 
 sub setup_for {
   my ($class, $target, $args) = @_;
-  setup();
-  $lift{$target}{$_} = 1 for @$args;
+  $lift{$target} ||= [];
+  push @{ $lift{$target} }, map {
+    _setup($_);
+  } map {
+    ref $_ eq 'CODE'
+      ? $_
+      : \&{ "${target}::${_}" }
+  } @{ $args };
 }
 
 sub teardown_for {
   my ($class, $target) = @_;
+  _teardown($_) for @{ $lift{$target} };
   delete $lift{$target};
-  teardown();
 }
 
 =head1 NAME