Copy the contents of the %DB::sub entry if it exists

[p5sagit/Sub-Name.git] / Name.xs

diff --git a/Name.xs b/Name.xs
index 31dbde4..d7fd127 100644 (file)
--- a/Name.xs
+++ b/Name.xs
@@ -67,6 +67,40 @@ subname(name, sub)
                Safefree(namepv);
                 name = end;
         }
+
+       /* under debugger, provide information about sub location */
+       if (PL_DBsub && CvGV(cv)) {
+               HV *hv = GvHV(PL_DBsub);
+
+               char* new_pkg = HvNAME(stash);
+
+               char* old_name = GvNAME( CvGV(cv) );
+               char* old_pkg = HvNAME( GvSTASH(CvGV(cv)) );
+
+               int old_len = strlen(old_name) + strlen(old_pkg);
+               int new_len = strlen(name) + strlen(new_pkg);
+
+               char* full_name;
+               Newxz(full_name, (old_len > new_len ? old_len : new_len) + 3, char);
+
+               strcat(full_name, old_pkg);
+               strcat(full_name, "::");
+               strcat(full_name, old_name);
+
+               SV** old_data = hv_fetch(hv, full_name, strlen(full_name), 0);
+
+               if (old_data) {
+                       strcpy(full_name, new_pkg);
+                       strcat(full_name, "::");
+                       strcat(full_name, name);
+
+                       SvREFCNT_inc(*old_data);
+                       if (!hv_store(hv, full_name, strlen(full_name), *old_data, 0))
+                               SvREFCNT_dec(*old_data);
+               }
+               Safefree(full_name);
+       }
+
        gv = (GV *) newSV(0);
        gv_init(gv, stash, name, s - name, TRUE);