X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=xs-src%2FMouseAccessor.xs;h=1dad5e65d90b05bab94a1065337fe1d684eb119c;hb=fcdc12ac0d67969cf79745b062fd706ae56c8b92;hp=37c5ffd8708dd9f7903f29e6afd449560fd58c73;hpb=06afbf314918195c3d4ab2e154f84d46b2633d7c;p=gitmo%2FMouse.git

diff --git a/xs-src/MouseAccessor.xs b/xs-src/MouseAccessor.xs
index 37c5ffd..1dad5e6 100644
--- a/xs-src/MouseAccessor.xs
+++ b/xs-src/MouseAccessor.xs
@@ -1,9 +1,10 @@
 #include "mouse.h"
 
-#define CHECK_INSTANCE(instance) STMT_START{                          \
-        if(!(SvROK(instance) && SvTYPE(SvRV(instance)) == SVt_PVHV)){ \
-            croak("Invalid object instance");                         \
-        }                                                             \
+#define CHECK_INSTANCE(instance) STMT_START{                           \
+        assert(instance);                                              \
+        if(!(SvROK(instance) && SvTYPE(SvRV(instance)) == SVt_PVHV)){  \
+            croak("Invalid object instance: '%"SVf"'", instance);      \
+        }                                                              \
     } STMT_END
 
 
@@ -88,10 +89,12 @@ mouse_push_values(pTHX_ SV* const value, U16 const flags){
             PUSHs(svp ? *svp : &PL_sv_undef);
         }
     }
-    else if(flags & MOUSEf_TC_IS_HASHREF){
+    else{
         HV* hv;
         HE* he;
 
+        assert(flags & MOUSEf_TC_IS_HASHREF);
+
         if(!IsHashRef(value)){
             croak("Mouse-panic: Not a HASH reference");
         }
@@ -142,14 +145,22 @@ mouse_attr_set(pTHX_ SV* const self, MAGIC* const mg, SV* value){
         SV* const trigger = mcall0s(MOUSE_mg_attribute(mg), "trigger");
         dSP;
 
+        /* NOTE: triggers can remove value, so
+                 value must be copied here,
+                 revealed by Net::Google::DataAPI (DANJOU).
+         */
+        value = sv_mortalcopy(value);
+
         PUSHMARK(SP);
         EXTEND(SP, 2);
         PUSHs(self);
         PUSHs(value);
 
         PUTBACK;
-        call_sv(trigger, G_VOID | G_DISCARD);
+        call_sv_safe(trigger, G_VOID | G_DISCARD);
         /* need not SPAGAIN */
+
+        assert(SvTYPE(value) != SVTYPEMASK);
     }
 
     PUSH_VALUE(value, flags);
@@ -321,24 +332,26 @@ XS(XS_Mouse_simple_predicate)
 
 SV*
 mouse_instance_create(pTHX_ HV* const stash) {
+    SV* instance;
     assert(stash);
     assert(SvTYPE(stash) == SVt_PVHV);
-    return sv_bless( newRV_noinc((SV*)newHV()), stash );
+    instance = sv_bless( newRV_noinc((SV*)newHV()), stash );
+    return sv_2mortal(instance);
 }
 
 SV*
 mouse_instance_clone(pTHX_ SV* const instance) {
-    HV* proto;
-    assert(instance);
-
+    SV* proto;
     CHECK_INSTANCE(instance);
-    proto = newHVhv((HV*)SvRV(instance));
-    return sv_bless( newRV_noinc((SV*)proto), SvSTASH(SvRV(instance)) );
+    assert(SvOBJECT(SvRV(instance)));
+
+    proto = newRV_noinc((SV*)newHVhv((HV*)SvRV(instance)));
+    sv_bless(proto, SvSTASH(SvRV(instance)));
+    return sv_2mortal(proto);
 }
 
 bool
 mouse_instance_has_slot(pTHX_ SV* const instance, SV* const slot) {
-    assert(instance);
     assert(slot);
     CHECK_INSTANCE(instance);
     return hv_exists_ent((HV*)SvRV(instance), slot, 0U);
@@ -347,7 +360,6 @@ mouse_instance_has_slot(pTHX_ SV* const instance, SV* const slot) {
 SV*
 mouse_instance_get_slot(pTHX_ SV* const instance, SV* const slot) {
     HE* he;
-    assert(instance);
     assert(slot);
     CHECK_INSTANCE(instance);
     he = hv_fetch_ent((HV*)SvRV(instance), slot, FALSE, 0U);
@@ -358,7 +370,6 @@ SV*
 mouse_instance_set_slot(pTHX_ SV* const instance, SV* const slot, SV* const value) {
     HE* he;
     SV* sv;
-    assert(instance);
     assert(slot);
     assert(value);
     CHECK_INSTANCE(instance);
@@ -380,7 +391,6 @@ mouse_instance_delete_slot(pTHX_ SV* const instance, SV* const slot) {
 void
 mouse_instance_weaken_slot(pTHX_ SV* const instance, SV* const slot) {
     HE* he;
-    assert(instance);
     assert(slot);
     CHECK_INSTANCE(instance);
     he = hv_fetch_ent((HV*)SvRV(instance), slot, FALSE, 0U);