From: Zbigniew Łukasiak <zbigniew@lukasiak.name>
Date: Mon, 16 Nov 2009 22:29:19 +0000 (+0000)
Subject: Catalyst::Context created
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=catagits%2FCatalyst-Runtime.git;a=commitdiff_plain;h=c20db8ca12c2470a9955c44822be0f4ccb2afd1d

Catalyst::Context created
---

diff --git a/lib/Catalyst/Context.pm b/lib/Catalyst/Context.pm
new file mode 100644
index 0000000..40e8545
--- /dev/null
+++ b/lib/Catalyst/Context.pm
@@ -0,0 +1,1213 @@
+package Catalyst::Context;
+
+use Moose;
+use bytes;
+use B::Hooks::EndOfScope ();
+use Catalyst::Exception::Detach;
+use Catalyst::Exception::Go;
+use Catalyst::Request;
+use Catalyst::Request::Upload;
+use Catalyst::Response;
+use Catalyst::Utils;
+use File::stat;
+use Text::SimpleTable ();
+use URI ();
+use URI::http;
+use URI::https;
+use utf8;
+use Carp qw/croak carp shortmess/;
+
+has stack => (is => 'ro', default => sub { [] });
+has stash => (is => 'rw', default => sub { {} });
+has state => (is => 'rw', default => 0);
+has stats => (is => 'rw');
+has action => (is => 'rw');
+has counter => (is => 'rw', default => sub { {} });
+has request => (is => 'rw', default => sub { $_[0]->request_class->new({}) }, required => 1, lazy => 1);
+has response => (is => 'rw', default => sub { $_[0]->response_class->new({}) }, required => 1, lazy => 1);
+has namespace => (is => 'rw');
+
+
+has 'application' => (
+    isa       => 'Catalyst',
+    is        => 'ro',
+    handles   => [
+        qw/
+        controllers 
+        models 
+        views 
+        component 
+        config
+        log
+        debug
+        dispatcher_class
+        request_class
+        dispatcher
+        prepare 
+        engine_class
+        engine
+        path_to 
+        plugin 
+        setup_finalize 
+        welcome_message 
+        components
+        context_class        setup_actions
+        search_extra
+        root
+        parse_on_demand
+        name
+        ignore_frontend_proxy
+        home
+        default_model
+        default_view
+        version
+        use_stats
+        stats_class
+        set_action
+
+        ran_setup
+        _comp_search_prefixes
+        _filter_component
+       /
+   ],
+);
+
+sub depth { scalar @{ shift->stack || [] }; }
+
+sub req {
+    my $self = shift; return $self->request(@_);
+}
+sub res {
+    my $self = shift; return $self->response(@_);
+}
+
+# For backwards compatibility
+sub finalize_output { shift->finalize_body(@_) };
+
+# For statistics
+our $RECURSION = 1000;
+our $DETACH    = Catalyst::Exception::Detach->new;
+our $GO        = Catalyst::Exception::Go->new;
+
+=head1 METHODS
+
+=head2 INFORMATION ABOUT THE CURRENT REQUEST
+
+=head2 $c->action
+
+Returns a L<Catalyst::Action> object for the current action, which
+stringifies to the action name. See L<Catalyst::Action>.
+
+=head2 $c->namespace
+
+Returns the namespace of the current action, i.e., the URI prefix
+corresponding to the controller of the current action. For example:
+
+    # in Controller::Foo::Bar
+    $c->namespace; # returns 'foo/bar';
+
+=head2 $c->request
+
+=head2 $c->req
+
+Returns the current L<Catalyst::Request> object, giving access to
+information about the current client request (including parameters,
+cookies, HTTP headers, etc.). See L<Catalyst::Request>.
+
+=head2 REQUEST FLOW HANDLING
+
+=head2 $c->forward( $action [, \@arguments ] )
+
+=head2 $c->forward( $class, $method, [, \@arguments ] )
+
+Forwards processing to another action, by its private name. If you give a
+class name but no method, C<process()> is called. You may also optionally
+pass arguments in an arrayref. The action will receive the arguments in
+C<@_> and C<< $c->req->args >>. Upon returning from the function,
+C<< $c->req->args >> will be restored to the previous values.
+
+Any data C<return>ed from the action forwarded to, will be returned by the
+call to forward.
+
+    my $foodata = $c->forward('/foo');
+    $c->forward('index');
+    $c->forward(qw/MyApp::Model::DBIC::Foo do_stuff/);
+    $c->forward('MyApp::View::TT');
+
+Note that L<< forward|/"$c->forward( $action [, \@arguments ] )" >> implies
+an C<< eval { } >> around the call (actually
+L<< execute|/"$c->execute( $class, $coderef )" >> does), thus de-fatalizing
+all 'dies' within the called action. If you want C<die> to propagate you
+need to do something like:
+
+    $c->forward('foo');
+    die $c->error if $c->error;
+
+Or make sure to always return true values from your actions and write
+your code like this:
+
+    $c->forward('foo') || return;
+    
+Another note is that C<< $c->forward >> always returns a scalar because it
+actually returns $c->state which operates in a scalar context.
+Thus, something like:
+
+    return @array;
+    
+in an action that is forwarded to is going to return a scalar, 
+i.e. how many items are in that array, which is probably not what you want.
+If you need to return an array then return a reference to it, 
+or stash it like so:
+
+    $c->stash->{array} = \@array;
+
+and access it from the stash.
+
+=cut
+
+sub forward { my $c = shift; no warnings 'recursion'; $c->dispatcher->forward( $c, @_ ) }
+
+=head2 $c->detach( $action [, \@arguments ] )
+
+=head2 $c->detach( $class, $method, [, \@arguments ] )
+
+=head2 $c->detach()
+
+The same as L<< forward|/"$c->forward( $action [, \@arguments ] )" >>, but
+doesn't return to the previous action when processing is finished.
+
+When called with no arguments it escapes the processing chain entirely.
+
+=cut
+
+sub detach { my $c = shift; $c->dispatcher->detach( $c, @_ ) }
+
+=head2 $c->visit( $action [, \@captures, \@arguments ] )
+
+=head2 $c->visit( $class, $method, [, \@captures, \@arguments ] )
+
+Almost the same as L<< forward|/"$c->forward( $action [, \@arguments ] )" >>,
+but does a full dispatch, instead of just calling the new C<$action> /
+C<< $class->$method >>. This means that C<begin>, C<auto> and the method
+you go to are called, just like a new request.
+
+In addition both C<< $c->action >> and C<< $c->namespace >> are localized.
+This means, for example, that C<< $c->action >> methods such as
+L<name|Catalyst::Action/name>, L<class|Catalyst::Action/class> and
+L<reverse|Catalyst::Action/reverse> return information for the visited action
+when they are invoked within the visited action.  This is different from the
+behavior of L<< forward|/"$c->forward( $action [, \@arguments ] )" >>, which
+continues to use the $c->action object from the caller action even when
+invoked from the callee.
+
+C<< $c->stash >> is kept unchanged.
+
+In effect, L<< visit|/"$c->visit( $action [, \@captures, \@arguments ] )" >>
+allows you to "wrap" another action, just as it would have been called by
+dispatching from a URL, while the analogous
+L<< go|/"$c->go( $action [, \@captures, \@arguments ] )" >> allows you to
+transfer control to another action as if it had been reached directly from a URL.
+
+=cut
+
+sub visit { my $c = shift; $c->dispatcher->visit( $c, @_ ) }
+
+=head2 $c->go( $action [, \@captures, \@arguments ] )
+
+=head2 $c->go( $class, $method, [, \@captures, \@arguments ] )
+
+The relationship between C<go> and 
+L<< visit|/"$c->visit( $action [, \@captures, \@arguments ] )" >> is the same as
+the relationship between 
+L<< forward|/"$c->forward( $class, $method, [, \@arguments ] )" >> and
+L<< detach|/"$c->detach( $action [, \@arguments ] )" >>. Like C<< $c->visit >>,
+C<< $c->go >> will perform a full dispatch on the specified action or method,
+with localized C<< $c->action >> and C<< $c->namespace >>. Like C<detach>,
+C<go> escapes the processing of the current request chain on completion, and
+does not return to its caller.
+
+=cut
+
+sub go { my $c = shift; $c->dispatcher->go( $c, @_ ) }
+
+=head2 $c->response
+
+=head2 $c->res
+
+Returns the current L<Catalyst::Response> object, see there for details.
+
+=head2 $c->stash
+
+Returns a hashref to the stash, which may be used to store data and pass
+it between components during a request. You can also set hash keys by
+passing arguments. The stash is automatically sent to the view. The
+stash is cleared at the end of a request; it cannot be used for
+persistent storage (for this you must use a session; see
+L<Catalyst::Plugin::Session> for a complete system integrated with
+Catalyst).
+
+    $c->stash->{foo} = $bar;
+    $c->stash( { moose => 'majestic', qux => 0 } );
+    $c->stash( bar => 1, gorch => 2 ); # equivalent to passing a hashref
+
+    # stash is automatically passed to the view for use in a template
+    $c->forward( 'MyApp::View::TT' );
+
+=cut
+
+around stash => sub {
+    my $orig = shift;
+    my $c = shift;
+    my $stash = $orig->($c);
+    if (@_) {
+        my $new_stash = @_ > 1 ? {@_} : $_[0];
+        croak('stash takes a hash or hashref') unless ref $new_stash;
+        foreach my $key ( keys %$new_stash ) {
+          $stash->{$key} = $new_stash->{$key};
+        }
+    }
+
+    return $stash;
+};
+
+
+=head2 $c->error
+
+=head2 $c->error($error, ...)
+
+=head2 $c->error($arrayref)
+
+Returns an arrayref containing error messages.  If Catalyst encounters an
+error while processing a request, it stores the error in $c->error.  This
+method should only be used to store fatal error messages.
+
+    my @error = @{ $c->error };
+
+Add a new error.
+
+    $c->error('Something bad happened');
+
+=cut
+
+sub error {
+    my $c = shift;
+    if ( $_[0] ) {
+        my $error = ref $_[0] eq 'ARRAY' ? $_[0] : [@_];
+        croak @$error unless ref $c;
+        push @{ $c->{error} }, @$error;
+    }
+    elsif ( defined $_[0] ) { $c->{error} = undef }
+    return $c->{error} || [];
+}
+
+
+=head2 $c->state
+
+Contains the return value of the last executed action.   
+Note that << $c->state >> operates in a scalar context which means that all
+values it returns are scalar.
+
+=head2 $c->clear_errors
+
+Clear errors.  You probably don't want to clear the errors unless you are
+implementing a custom error screen.
+
+This is equivalent to running
+
+    $c->error(0);
+
+=cut
+
+sub clear_errors {
+    my $c = shift;
+    $c->error(0);
+}
+
+
+=head2 COMPONENT ACCESSORS
+
+=head2 $c->controller($name)
+
+Gets a L<Catalyst::Controller> instance by name.
+
+    $c->controller('Foo')->do_stuff;
+
+If the name is omitted, will return the controller for the dispatched
+action.
+
+If you want to search for controllers, pass in a regexp as the argument.
+
+    # find all controllers that start with Foo
+    my @foo_controllers = $c->controller(qr{^Foo});
+
+
+=cut
+
+sub controller {
+    my ( $c, $name, @args ) = @_;
+
+    if( $name ) {
+        my @result = $c->_comp_search_prefixes( $name, qw/Controller C/ );
+        return map { $c->_filter_component( $_, @args ) } @result if ref $name;
+        return $c->_filter_component( $result[ 0 ], @args );
+    }
+
+    return $c->component( $c->action->class );
+}
+
+=head2 $c->model($name)
+
+Gets a L<Catalyst::Model> instance by name.
+
+    $c->model('Foo')->do_stuff;
+
+Any extra arguments are directly passed to ACCEPT_CONTEXT.
+
+If the name is omitted, it will look for
+ - a model object in $c->stash->{current_model_instance}, then
+ - a model name in $c->stash->{current_model}, then
+ - a config setting 'default_model', or
+ - check if there is only one model, and return it if that's the case.
+
+If you want to search for models, pass in a regexp as the argument.
+
+    # find all models that start with Foo
+    my @foo_models = $c->model(qr{^Foo});
+
+=cut
+
+sub model {
+    my ( $c, $name, @args ) = @_;
+    my $appclass = ref($c) || $c;
+    if( $name ) {
+        my @result = $c->_comp_search_prefixes( $name, qw/Model M/ );
+        return map { $c->_filter_component( $_, @args ) } @result if ref $name;
+        return $c->_filter_component( $result[ 0 ], @args );
+    }
+
+    if (ref $c) {
+        return $c->stash->{current_model_instance}
+          if $c->stash->{current_model_instance};
+        return $c->model( $c->stash->{current_model} )
+          if $c->stash->{current_model};
+    }
+    return $c->model( $appclass->config->{default_model} )
+      if $appclass->config->{default_model};
+
+    my( $comp, $rest ) = $c->_comp_search_prefixes( undef, qw/Model M/);
+
+    if( $rest ) {
+        $c->log->warn( Carp::shortmess('Calling $c->model() will return a random model unless you specify one of:') );
+        $c->log->warn( '* $c->config(default_model => "the name of the default model to use")' );
+        $c->log->warn( '* $c->stash->{current_model} # the name of the model to use for this request' );
+        $c->log->warn( '* $c->stash->{current_model_instance} # the instance of the model to use for this request' );
+        $c->log->warn( 'NB: in version 5.81, the "random" behavior will not work at all.' );
+    }
+
+    return $c->_filter_component( $comp );
+}
+
+
+=head2 $c->view($name)
+
+Gets a L<Catalyst::View> instance by name.
+
+    $c->view('Foo')->do_stuff;
+
+Any extra arguments are directly passed to ACCEPT_CONTEXT.
+
+If the name is omitted, it will look for
+ - a view object in $c->stash->{current_view_instance}, then
+ - a view name in $c->stash->{current_view}, then
+ - a config setting 'default_view', or
+ - check if there is only one view, and return it if that's the case.
+
+If you want to search for views, pass in a regexp as the argument.
+
+    # find all views that start with Foo
+    my @foo_views = $c->view(qr{^Foo});
+
+=cut
+
+sub view {
+    my ( $c, $name, @args ) = @_;
+
+    my $appclass = ref($c) || $c;
+    if( $name ) {
+        my @result = $c->_comp_search_prefixes( $name, qw/View V/ );
+        return map { $c->_filter_component( $_, @args ) } @result if ref $name;
+        return $c->_filter_component( $result[ 0 ], @args );
+    }
+
+    if (ref $c) {
+        return $c->stash->{current_view_instance}
+          if $c->stash->{current_view_instance};
+        return $c->view( $c->stash->{current_view} )
+          if $c->stash->{current_view};
+    }
+    return $c->view( $appclass->config->{default_view} )
+      if $appclass->config->{default_view};
+
+    my( $comp, $rest ) = $c->_comp_search_prefixes( undef, qw/View V/);
+
+    if( $rest ) {
+        $c->log->warn( 'Calling $c->view() will return a random view unless you specify one of:' );
+        $c->log->warn( '* $c->config(default_view => "the name of the default view to use")' );
+        $c->log->warn( '* $c->stash->{current_view} # the name of the view to use for this request' );
+        $c->log->warn( '* $c->stash->{current_view_instance} # the instance of the view to use for this request' );
+        $c->log->warn( 'NB: in version 5.81, the "random" behavior will not work at all.' );
+    }
+
+    return $c->_filter_component( $comp );
+}
+
+=head2 UTILITY METHODS
+
+=head2 $c->uri_for( $path?, @args?, \%query_values? )
+
+=head2 $c->uri_for( $action, \@captures?, @args?, \%query_values? )
+
+Constructs an absolute L<URI> object based on the application root, the
+provided path, and the additional arguments and query parameters provided.
+When used as a string, provides a textual URI.
+
+If no arguments are provided, the URI for the current action is returned.
+To return the current action and also provide @args, use
+C<< $c->uri_for( $c->action, @args ) >>. 
+
+If the first argument is a string, it is taken as a public URI path relative
+to C<< $c->namespace >> (if it doesn't begin with a forward slash) or
+relative to the application root (if it does). It is then merged with
+C<< $c->request->base >>; any C<@args> are appended as additional path
+components; and any C<%query_values> are appended as C<?foo=bar> parameters.
+
+If the first argument is a L<Catalyst::Action> it represents an action which
+will have its path resolved using C<< $c->dispatcher->uri_for_action >>. The
+optional C<\@captures> argument (an arrayref) allows passing the captured
+variables that are needed to fill in the paths of Chained and Regex actions;
+once the path is resolved, C<uri_for> continues as though a path was
+provided, appending any arguments or parameters and creating an absolute
+URI.
+
+The captures for the current request can be found in
+C<< $c->request->captures >>, and actions can be resolved using
+C<< Catalyst::Controller->action_for($name) >>. If you have a private action
+path, use C<< $c->uri_for_action >> instead.
+
+  # Equivalent to $c->req->uri
+  $c->uri_for($c->action, $c->req->captures,
+      @{ $c->req->args }, $c->req->params);
+
+  # For the Foo action in the Bar controller
+  $c->uri_for($c->controller('Bar')->action_for('Foo'));
+
+  # Path to a static resource
+  $c->uri_for('/static/images/logo.png');
+
+=cut
+
+sub uri_for {
+    my ( $c, $path, @args ) = @_;
+
+    if (blessed($path) && $path->isa('Catalyst::Controller')) {
+        $path = $path->path_prefix;
+        $path =~ s{/+\z}{};
+        $path .= '/';
+    }
+
+    if ( blessed($path) ) { # action object
+        my $captures = [ map { s|/|%2F|; $_; }
+                        ( scalar @args && ref $args[0] eq 'ARRAY'
+                         ? @{ shift(@args) }
+                         : ()) ];
+        my $action = $path;
+        $path = $c->dispatcher->uri_for_action($action, $captures);
+        if (not defined $path) {
+            $c->log->debug(qq/Can't find uri_for action '$action' @$captures/)
+                if $c->debug;
+            return undef;
+        }
+        $path = '/' if $path eq '';
+    }
+
+    undef($path) if (defined $path && $path eq '');
+
+    my $params =
+      ( scalar @args && ref $args[$#args] eq 'HASH' ? pop @args : {} );
+
+    carp "uri_for called with undef argument" if grep { ! defined $_ } @args;
+    s/([^$URI::uric])/$URI::Escape::escapes{$1}/go for @args;
+    s|/|%2F| for @args;
+
+    unshift(@args, $path);
+
+    unless (defined $path && $path =~ s!^/!!) { # in-place strip
+        my $namespace = $c->namespace;
+        if (defined $path) { # cheesy hack to handle path '../foo'
+           $namespace =~ s{(?:^|/)[^/]+$}{} while $args[0] =~ s{^\.\./}{};
+        }
+        unshift(@args, $namespace || '');
+    }
+
+    # join args with '/', or a blank string
+    my $args = join('/', grep { defined($_) } @args);
+    $args =~ s/\?/%3F/g; # STUPID STUPID SPECIAL CASE
+    $args =~ s!^/+!!;
+    my $base = $c->req->base;
+    my $class = ref($base);
+    $base =~ s{(?<!/)$}{/};
+
+    my $query = '';
+
+    if (my @keys = keys %$params) {
+      # somewhat lifted from URI::_query's query_form
+      $query = '?'.join('&', map {
+          my $val = $params->{$_};
+          s/([;\/?:@&=+,\$\[\]%])/$URI::Escape::escapes{$1}/go;
+          s/ /+/g;
+          my $key = $_;
+          $val = '' unless defined $val;
+          (map {
+              my $param = "$_";
+              utf8::encode( $param ) if utf8::is_utf8($param);
+              # using the URI::Escape pattern here so utf8 chars survive
+              $param =~ s/([^A-Za-z0-9\-_.!~*'() ])/$URI::Escape::escapes{$1}/go;
+              $param =~ s/ /+/g;
+              "${key}=$param"; } ( ref $val eq 'ARRAY' ? @$val : $val ));
+      } @keys);
+    }
+
+    my $res = bless(\"${base}${args}${query}", $class);
+    $res;
+}
+
+=head2 $c->uri_for_action( $path, \@captures?, @args?, \%query_values? )
+
+=head2 $c->uri_for_action( $action, \@captures?, @args?, \%query_values? )
+
+=over
+
+=item $path
+
+A private path to the Catalyst action you want to create a URI for.
+
+This is a shortcut for calling C<< $c->dispatcher->get_action_by_path($path)
+>> and passing the resulting C<$action> and the remaining arguments to C<<
+$c->uri_for >>.
+
+You can also pass in a Catalyst::Action object, in which case it is passed to
+C<< $c->uri_for >>.
+
+=back
+
+=cut
+
+sub uri_for_action {
+    my ( $c, $path, @args ) = @_;
+    my $action = blessed($path)
+      ? $path
+      : $c->dispatcher->get_action_by_path($path);
+    unless (defined $action) {
+      croak "Can't find action for path '$path'";
+    }
+    return $c->uri_for( $action, @args );
+}
+
+=head1 INTERNAL METHODS
+
+=head2 $c->counter
+
+Returns a hashref containing coderefs and execution counts (needed for
+deep recursion detection).
+
+=head2 $c->depth
+
+Returns the number of actions on the current internal execution stack.
+
+=head2 $c->dispatch
+
+Dispatches a request to actions.
+
+=cut
+
+sub dispatch { my $c = shift; $c->dispatcher->dispatch( $c, @_ ) }
+
+=head2 $c->dump_these
+
+Returns a list of 2-element array references (name, structure) pairs
+that will be dumped on the error page in debug mode.
+
+=cut
+
+sub dump_these {
+    my $c = shift;
+    [ Request => $c->req ],
+    [ Response => $c->res ],
+    [ Stash => $c->stash ],
+    [ Config => $c->config ];
+}
+
+=head2 $c->execute( $class, $coderef )
+
+Execute a coderef in given class and catch exceptions. Errors are available
+via $c->error.
+
+=cut
+
+sub execute {
+    my ( $c, $class, $code ) = @_;
+    $class = $c->component($class) || $class;
+    $c->state(0);
+
+    if ( $c->depth >= $RECURSION ) {
+        my $action = $code->reverse();
+        $action = "/$action" unless $action =~ /->/;
+        my $error = qq/Deep recursion detected calling "${action}"/;
+        $c->log->error($error);
+        $c->error($error);
+        $c->state(0);
+        return $c->state;
+    }
+
+    my $stats_info = $c->_stats_start_execute( $code ) if $c->use_stats;
+
+    push( @{ $c->stack }, $code );
+
+    no warnings 'recursion';
+    eval { $c->state( $code->execute( $class, $c, @{ $c->req->args } ) || 0 ) };
+
+    $c->_stats_finish_execute( $stats_info ) if $c->use_stats and $stats_info;
+
+    my $last = pop( @{ $c->stack } );
+
+    if ( my $error = $@ ) {
+        if ( blessed($error) and $error->isa('Catalyst::Exception::Detach') ) {
+            $error->rethrow if $c->depth > 1;
+        }
+        elsif ( blessed($error) and $error->isa('Catalyst::Exception::Go') ) {
+            $error->rethrow if $c->depth > 0;
+        }
+        else {
+            unless ( ref $error ) {
+                no warnings 'uninitialized';
+                chomp $error;
+                my $class = $last->class;
+                my $name  = $last->name;
+                $error = qq/Caught exception in $class->$name "$error"/;
+            }
+            $c->error($error);
+            $c->state(0);
+        }
+    }
+    return $c->state;
+}
+
+sub _stats_start_execute {
+    my ( $c, $code ) = @_;
+    my $appclass = ref($c) || $c;
+    return if ( ( $code->name =~ /^_.*/ )
+        && ( !$appclass->config->{show_internal_actions} ) );
+
+    my $action_name = $code->reverse();
+    $c->counter->{$action_name}++;
+
+    my $action = $action_name;
+    $action = "/$action" unless $action =~ /->/;
+
+    # determine if the call was the result of a forward
+    # this is done by walking up the call stack and looking for a calling
+    # sub of Catalyst::forward before the eval
+    my $callsub = q{};
+    for my $index ( 2 .. 11 ) {
+        last
+        if ( ( caller($index) )[0] eq 'Catalyst'
+            && ( caller($index) )[3] eq '(eval)' );
+
+        if ( ( caller($index) )[3] =~ /forward$/ ) {
+            $callsub = ( caller($index) )[3];
+            $action  = "-> $action";
+            last;
+        }
+    }
+
+    my $uid = $action_name . $c->counter->{$action_name};
+
+    # is this a root-level call or a forwarded call?
+    if ( $callsub =~ /forward$/ ) {
+        my $parent = $c->stack->[-1];
+
+        # forward, locate the caller
+        if ( exists $c->counter->{"$parent"} ) {
+            $c->stats->profile(
+                begin  => $action,
+                parent => "$parent" . $c->counter->{"$parent"},
+                uid    => $uid,
+            );
+        }
+        else {
+
+            # forward with no caller may come from a plugin
+            $c->stats->profile(
+                begin => $action,
+                uid   => $uid,
+            );
+        }
+    }
+    else {
+
+        # root-level call
+        $c->stats->profile(
+            begin => $action,
+            uid   => $uid,
+        );
+    }
+    return $action;
+
+}
+
+sub _stats_finish_execute {
+    my ( $c, $info ) = @_;
+    $c->stats->profile( end => $info );
+}
+
+=head2 $c->finalize
+
+Finalizes the request.
+
+=cut
+
+sub finalize {
+    my $c = shift;
+
+    for my $error ( @{ $c->error } ) {
+        $c->log->error($error);
+    }
+
+    # Allow engine to handle finalize flow (for POE)
+    my $engine = $c->engine;
+    if ( my $code = $engine->can('finalize') ) {
+        $engine->$code($c);
+    }
+    else {
+
+        $c->finalize_uploads;
+
+        # Error
+        if ( $#{ $c->error } >= 0 ) {
+            $c->finalize_error;
+        }
+
+        $c->finalize_headers;
+
+        # HEAD request
+        if ( $c->request->method eq 'HEAD' ) {
+            $c->response->body('');
+        }
+
+        $c->finalize_body;
+    }
+
+    if ($c->use_stats) {
+        my $elapsed = sprintf '%f', $c->stats->elapsed;
+        my $av = $elapsed == 0 ? '??' : sprintf '%.3f', 1 / $elapsed;
+        $c->log->info(
+            "Request took ${elapsed}s ($av/s)\n" . $c->stats->report . "\n" );
+    }
+
+    return $c->response->status;
+}
+
+=head2 $c->finalize_body
+
+Finalizes body.
+
+=cut
+
+sub finalize_body { my $c = shift; $c->engine->finalize_body( $c, @_ ) }
+
+=head2 $c->finalize_cookies
+
+Finalizes cookies.
+
+=cut
+
+sub finalize_cookies { my $c = shift; $c->engine->finalize_cookies( $c, @_ ) }
+
+=head2 $c->finalize_error
+
+Finalizes error.
+
+=cut
+
+sub finalize_error { my $c = shift; $c->engine->finalize_error( $c, @_ ) }
+
+=head2 $c->finalize_headers
+
+Finalizes headers.
+
+=cut
+
+sub finalize_headers {
+    my $c = shift;
+
+    my $response = $c->response; #accessor calls can add up?
+
+    # Check if we already finalized headers
+    return if $response->finalized_headers;
+
+    # Handle redirects
+    if ( my $location = $response->redirect ) {
+        $c->log->debug(qq/Redirecting to "$location"/) if $c->debug;
+        $response->header( Location => $location );
+
+        if ( !$response->has_body ) {
+            # Add a default body if none is already present
+            $response->body(
+                qq{<html><body><p>This item has moved <a href="$location">here</a>.</p></body></html>}
+            );
+        }
+    }
+
+    # Content-Length
+    if ( $response->body && !$response->content_length ) {
+
+        # get the length from a filehandle
+        if ( blessed( $response->body ) && $response->body->can('read') )
+        {
+            my $stat = stat $response->body;
+            if ( $stat && $stat->size > 0 ) {
+                $response->content_length( $stat->size );
+            }
+            else {
+                $c->log->warn('Serving filehandle without a content-length');
+            }
+        }
+        else {
+            # everything should be bytes at this point, but just in case
+            $response->content_length( bytes::length( $response->body ) );
+        }
+    }
+
+    # Errors
+    if ( $response->status =~ /^(1\d\d|[23]04)$/ ) {
+        $response->headers->remove_header("Content-Length");
+        $response->body('');
+    }
+
+    $c->finalize_cookies;
+
+    $c->engine->finalize_headers( $c, @_ );
+
+    # Done
+    $response->finalized_headers(1);
+}
+
+=head2 $c->finalize_output
+
+An alias for finalize_body.
+
+=head2 $c->finalize_read
+
+Finalizes the input after reading is complete.
+
+=cut
+
+sub finalize_read { my $c = shift; $c->engine->finalize_read( $c, @_ ) }
+
+=head2 $c->finalize_uploads
+
+Finalizes uploads. Cleans up any temporary files.
+
+=cut
+
+sub finalize_uploads { my $c = shift; $c->engine->finalize_uploads( $c, @_ ) }
+
+=head2 $c->get_action( $action, $namespace )
+
+Gets an action in a given namespace.
+
+=cut
+
+sub get_action { my $c = shift; $c->dispatcher->get_action(@_) }
+
+=head2 $c->get_actions( $action, $namespace )
+
+Gets all actions of a given name in a namespace and all parent
+namespaces.
+
+=cut
+
+sub get_actions { my $c = shift; $c->dispatcher->get_actions( $c, @_ ) }
+
+=head2 $c->prepare_action
+
+Prepares action. See L<Catalyst::Dispatcher>.
+
+=cut
+
+sub prepare_action { my $c = shift; $c->dispatcher->prepare_action( $c, @_ ) }
+
+=head2 $c->prepare_body
+
+Prepares message body.
+
+=cut
+
+sub prepare_body {
+    my $c = shift;
+
+    return if $c->request->_has_body;
+
+    # Initialize on-demand data
+    $c->engine->prepare_body( $c, @_ );
+    $c->prepare_parameters;
+    $c->prepare_uploads;
+
+    if ( $c->debug && keys %{ $c->req->body_parameters } ) {
+        my $t = Text::SimpleTable->new( [ 35, 'Parameter' ], [ 36, 'Value' ] );
+        for my $key ( sort keys %{ $c->req->body_parameters } ) {
+            my $param = $c->req->body_parameters->{$key};
+            my $value = defined($param) ? $param : '';
+            $t->row( $key,
+                ref $value eq 'ARRAY' ? ( join ', ', @$value ) : $value );
+        }
+        $c->log->debug( "Body Parameters are:\n" . $t->draw );
+    }
+}
+
+=head2 $c->prepare_body_chunk( $chunk )
+
+Prepares a chunk of data before sending it to L<HTTP::Body>.
+
+See L<Catalyst::Engine>.
+
+=cut
+
+sub prepare_body_chunk {
+    my $c = shift;
+    $c->engine->prepare_body_chunk( $c, @_ );
+}
+
+=head2 $c->prepare_body_parameters
+
+Prepares body parameters.
+
+=cut
+
+sub prepare_body_parameters {
+    my $c = shift;
+    $c->engine->prepare_body_parameters( $c, @_ );
+}
+
+=head2 $c->prepare_connection
+
+Prepares connection.
+
+=cut
+
+sub prepare_connection {
+    my $c = shift;
+    $c->engine->prepare_connection( $c, @_ );
+}
+
+=head2 $c->prepare_cookies
+
+Prepares cookies.
+
+=cut
+
+sub prepare_cookies { my $c = shift; $c->engine->prepare_cookies( $c, @_ ) }
+
+=head2 $c->prepare_headers
+
+Prepares headers.
+
+=cut
+
+sub prepare_headers { my $c = shift; $c->engine->prepare_headers( $c, @_ ) }
+
+=head2 $c->prepare_parameters
+
+Prepares parameters.
+
+=cut
+
+sub prepare_parameters {
+    my $c = shift;
+    $c->prepare_body_parameters;
+    $c->engine->prepare_parameters( $c, @_ );
+}
+
+=head2 $c->prepare_path
+
+Prepares path and base.
+
+=cut
+
+sub prepare_path { my $c = shift; $c->engine->prepare_path( $c, @_ ) }
+
+=head2 $c->prepare_query_parameters
+
+Prepares query parameters.
+
+=cut
+
+sub prepare_query_parameters {
+    my $c = shift;
+
+    $c->engine->prepare_query_parameters( $c, @_ );
+
+    if ( $c->debug && keys %{ $c->request->query_parameters } ) {
+        my $t = Text::SimpleTable->new( [ 35, 'Parameter' ], [ 36, 'Value' ] );
+        for my $key ( sort keys %{ $c->req->query_parameters } ) {
+            my $param = $c->req->query_parameters->{$key};
+            my $value = defined($param) ? $param : '';
+            $t->row( $key,
+                ref $value eq 'ARRAY' ? ( join ', ', @$value ) : $value );
+        }
+        $c->log->debug( "Query Parameters are:\n" . $t->draw );
+    }
+}
+
+=head2 $c->prepare_read
+
+Prepares the input for reading.
+
+=cut
+
+sub prepare_read { my $c = shift; $c->engine->prepare_read( $c, @_ ) }
+
+=head2 $c->prepare_request
+
+Prepares the engine request.
+
+=cut
+
+sub prepare_request { my $c = shift; $c->engine->prepare_request( $c, @_ ) }
+
+=head2 $c->prepare_uploads
+
+Prepares uploads.
+
+=cut
+
+sub prepare_uploads {
+    my $c = shift;
+
+    $c->engine->prepare_uploads( $c, @_ );
+
+    if ( $c->debug && keys %{ $c->request->uploads } ) {
+        my $t = Text::SimpleTable->new(
+            [ 12, 'Parameter' ],
+            [ 26, 'Filename' ],
+            [ 18, 'Type' ],
+            [ 9,  'Size' ]
+        );
+        for my $key ( sort keys %{ $c->request->uploads } ) {
+            my $upload = $c->request->uploads->{$key};
+            for my $u ( ref $upload eq 'ARRAY' ? @{$upload} : ($upload) ) {
+                $t->row( $key, $u->filename, $u->type, $u->size );
+            }
+        }
+        $c->log->debug( "File Uploads are:\n" . $t->draw );
+    }
+}
+
+=head2 $c->prepare_write
+
+Prepares the output for writing.
+
+=cut
+
+sub prepare_write { my $c = shift; $c->engine->prepare_write( $c, @_ ) }
+
+=head2 $c->read( [$maxlength] )
+
+Reads a chunk of data from the request body. This method is designed to
+be used in a while loop, reading C<$maxlength> bytes on every call.
+C<$maxlength> defaults to the size of the request if not specified.
+
+You have to set C<< MyApp->config(parse_on_demand => 1) >> to use this
+directly.
+
+Warning: If you use read(), Catalyst will not process the body,
+so you will not be able to access POST parameters or file uploads via
+$c->request.  You must handle all body parsing yourself.
+
+=cut
+
+sub read { my $c = shift; return $c->engine->read( $c, @_ ) }
+
+=head2 $c->stack
+
+Returns an arrayref of the internal execution stack (actions that are
+currently executing).
+
+
+=head2 $c->write( $data )
+
+Writes $data to the output stream. When using this method directly, you
+will need to manually set the C<Content-Length> header to the length of
+your output data, if known.
+
+=cut
+
+sub write {
+    my $c = shift;
+
+    # Finalize headers if someone manually writes output
+    $c->finalize_headers;
+
+    return $c->engine->write( $c, @_ );
+}
+
+no Moose;
+__PACKAGE__->meta->make_immutable;
+
+1;
+
+__END__
+
+=head1 NAME
+
+Catalyst::Context - object for keeping request related state
+
+=head1 ATTRIBUTES 
+
+=head3 action
+
+=head3 counter
+
+=head3 namespace
+
+=head3 request_class
+
+=head3 request
+
+=head3 response_class
+
+=head3 response
+
+=head3 stack
+
+=head3 stash
+
+=head3 state
+
+=head3 stats
+
+=head1 SEE ALSO
+
+L<Catalyst>, L<Catalyst::Model>, L<Catalyst::View>, L<Catalyst::Controller>.
+
+=head1 AUTHORS
+
+Catalyst Contributors, see Catalyst.pm
+
+=head1 COPYRIGHT
+
+This library is free software. You can redistribute it and/or modify it under
+the same terms as Perl itself.
+
+=cut
+