Start setting the 'c3' mro unambiguously everywhere

[dbsrgits/DBIx-Class.git] / lib / DBIx / Class / Schema.pm

diff --git a/lib/DBIx/Class/Schema.pm b/lib/DBIx/Class/Schema.pm
index 5f03739..04f92cc 100644 (file)
--- a/lib/DBIx/Class/Schema.pm
+++ b/lib/DBIx/Class/Schema.pm
@@ -4,6 +4,7 @@ use strict;
 use warnings;
 
 use base 'DBIx::Class';
+use mro 'c3';
 
 use DBIx::Class::Carp;
 use Try::Tiny;
@@ -865,25 +866,6 @@ will produce the output
 
 =cut
 
-# this might be oversimplified
-# sub compose_namespace {
-#   my ($self, $target, $base) = @_;
-
-#   my $schema = $self->clone;
-#   foreach my $source_name ($schema->sources) {
-#     my $source = $schema->source($source_name);
-#     my $target_class = "${target}::${source_name}";
-#     $self->inject_base(
-#       $target_class => $source->result_class, ($base ? $base : ())
-#     );
-#     $source->result_class($target_class);
-#     $target_class->result_source_instance($source)
-#       if $target_class->can('result_source_instance');
-#     $schema->register_source($source_name, $source);
-#   }
-#   return $schema;
-# }
-
 sub compose_namespace {
   my ($self, $target, $base) = @_;
 
@@ -1088,14 +1070,14 @@ This guard was activated beginning"
       );
     };
 
-    eval {
-      # if it throws - good, we'll go down to the do{} below
+    dbic_internal_try {
+      # if it throws - good, we'll assign to @args in the end
       # if it doesn't - do different things depending on RV truthiness
       if( $act->(@args) ) {
         $args[0] = (
           "Invocation of the exception_action handler installed on $self did *not*"
         .' result in an exception. DBIx::Class is unable to function without a reliable'
-        .' exception mechanism, ensure that exception_action does not hide exceptions'
+        .' exception mechanism, ensure your exception_action does not hide exceptions'
         ." (original error: $args[0])"
         );
       }
@@ -1107,19 +1089,18 @@ This guard was activated beginning"
         );
       }
 
-      $guard_disarmed = 1;
+      1;
     }
-
-      or
-
-    do {
+    catch {
       # We call this to get the necessary warnings emitted and disregard the RV
-      # as it's definitely an exception if we got as far as this do{} block
-      is_exception($@);
-
-      $guard_disarmed = 1;
-      $args[0] = $@;
+      # as it's definitely an exception if we got as far as this catch{} block
+      is_exception(
+        $args[0] = $_
+      );
     };
+
+    # Done guarding against https://github.com/PerlDancer/Dancer2/issues/1125
+    $guard_disarmed = 1;
   }
 
   DBIx::Class::Exception->throw( $args[0], $self->stacktrace );
@@ -1240,14 +1221,12 @@ format.
 sub ddl_filename {
   my ($self, $type, $version, $dir, $preversion) = @_;
 
-  require File::Spec;
-
   $version = "$preversion-$version" if $preversion;
 
   my $class = blessed($self) || $self;
   $class =~ s/::/-/g;
 
-  return File::Spec->catfile($dir, "$class-$version-$type.sql");
+  return "$dir/$class-$version-$type.sql";
 }
 
 =head2 thaw
@@ -1450,6 +1429,7 @@ sub DESTROY {
     # however beware - on older perls the exception seems randomly untrappable
     # due to some weird race condition during thread joining :(((
     if (length ref $srcs->{$source_name} and refcount($srcs->{$source_name}) > 1) {
+      local $SIG{__DIE__} if $SIG{__DIE__};
       local $@;
       eval {
         $srcs->{$source_name}->schema($self);
@@ -1462,6 +1442,11 @@ sub DESTROY {
       last;
     }
   }
+
+  # Dummy NEXTSTATE ensuring the all temporaries on the stack are garbage
+  # collected before leaving this scope. Depending on the code above, this
+  # may very well be just a preventive measure guarding future modifications
+  undef;
 }
 
 sub _unregister_source {