X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=catagits%2FCatalyst-Runtime.git;a=blobdiff_plain;f=lib%2FCatalyst%2FDispatcher.pm;h=91ae6fc8ddf21671d95203857f78178efc2ad857;hp=78bb5a39b0a795bfea19bfa8c9ae679b65dcbda7;hb=52f71256fa6baba38de781b3074884ff0d12769f;hpb=059c085bfcead450e70ace9ef193aa99ac2ab37d

diff --git a/lib/Catalyst/Dispatcher.pm b/lib/Catalyst/Dispatcher.pm
index 78bb5a3..91ae6fc 100644
--- a/lib/Catalyst/Dispatcher.pm
+++ b/lib/Catalyst/Dispatcher.pm
@@ -1,6 +1,7 @@
 package Catalyst::Dispatcher;
 
 use Moose;
+use Class::MOP;
 
 use Catalyst::Exception;
 use Catalyst::Utils;
@@ -13,25 +14,23 @@ use Tree::Simple;
 use Tree::Simple::Visitor::FindByPath;
 use Scalar::Util ();
 
-# Stringify to class
-use overload '""' => sub { return ref shift }, fallback => 1;
-
-
+#do these belong as package vars or should we build these via a builder method?
 # Preload these action types
 our @PRELOAD = qw/Index Path Regex/;
 
 # Postload these action types
 our @POSTLOAD = qw/Default/;
 
-has _tree                       => (is => 'rw');
-has _dispatch_types             => (is => 'rw');
-has _registered_dispatch_types  => (is => 'rw');
-has _method_action_class        => (is => 'rw');
-has _action_container_class     => (is => 'rw');
-has preload_dispatch_types      => (is => 'rw', required => 1, lazy => 1, default => sub { [@PRELOAD] });
-has postload_dispatch_types     => (is => 'rw', required => 1, lazy => 1, default => sub { [@POSTLOAD] });
-has _action_hash                => (is => 'rw', required => 1, lazy => 1, default => sub { {} });
-has _container_hash             => (is => 'rw', required => 1, lazy => 1, default => sub { {} });
+has _tree => (is => 'rw');
+has _dispatch_types => (is => 'rw', default => sub { [] }, required => 1, lazy => 1);
+has _registered_dispatch_types => (is => 'rw', default => sub { {} }, required => 1, lazy => 1);
+has _method_action_class => (is => 'rw', default => 'Catalyst::Action');
+has _action_container_class => (is => 'rw', default => 'Catalyst::ActionContainer');
+
+has preload_dispatch_types => (is => 'rw', required => 1, lazy => 1, default => sub { [@PRELOAD] });
+has postload_dispatch_types => (is => 'rw', required => 1, lazy => 1, default => sub { [@POSTLOAD] });
+has _action_hash => (is => 'rw', required => 1, lazy => 1, default => sub { {} });
+has _container_hash => (is => 'rw', required => 1, lazy => 1, default => sub { {} });
 
 no Moose;
 
@@ -59,7 +58,7 @@ Construct a new dispatcher.
 sub BUILD {
   my ($self, $params) = @_;
 
-  my $container = 
+  my $container =
     Catalyst::ActionContainer->new( { part => '/', actions => {} } );
 
   $self->_tree( Tree::Simple->new( $container, Tree::Simple->ROOT ) );
@@ -107,8 +106,8 @@ message about unknown resource
 
 sub dispatch {
     my ( $self, $c ) = @_;
-    if ( $c->action ) {
-        $c->forward( join( '/', '', $c->action->namespace, '_DISPATCH' ) );
+    if ( my $action = $c->action ) {
+        $c->forward( join( '/', '', $action->namespace, '_DISPATCH' ) );
     }
 
     else {
@@ -121,40 +120,84 @@ sub dispatch {
     }
 }
 
-=head2 $self->forward( $c, $command [, \@arguments ] )
+# $self->_command2action( $c, $command [, \@arguments ] )
+# Search for an action, from the command and returns C<($action, $args)> on
+# success. Returns C<(0)> on error.
 
-Documented in L<Catalyst>
-
-=cut
-
-sub forward {
+sub _command2action {
     my ( $self, $c, $command, @extra_params ) = @_;
 
     unless ($command) {
-        $c->log->debug('Nothing to forward to') if $c->debug;
+        $c->log->debug('Nothing to go to') if $c->debug;
         return 0;
     }
 
     my @args;
-    
+
     if ( ref( $extra_params[-1] ) eq 'ARRAY' ) {
         @args = @{ pop @extra_params }
     } else {
-        # this is a copy, it may take some abuse from ->_invoke_as_path if the path had trailing parts
+        # this is a copy, it may take some abuse from
+        # ->_invoke_as_path if the path had trailing parts
         @args = @{ $c->request->arguments };
     }
 
     my $action;
 
-    # forward to a string path ("/foo/bar/gorch") or action object which stringifies to that
+    # go to a string path ("/foo/bar/gorch")
+    # or action object which stringifies to that
     $action = $self->_invoke_as_path( $c, "$command", \@args );
 
-    # forward to a component ( "MyApp::*::Foo" or $c->component("...") - a path or an object)
+    # go to a component ( "MyApp::*::Foo" or $c->component("...")
+    # - a path or an object)
     unless ($action) {
         my $method = @extra_params ? $extra_params[0] : "process";
         $action = $self->_invoke_as_component( $c, $command, $method );
     }
 
+    return $action, \@args;
+}
+
+=head2 $self->go( $c, $command [, \@arguments ] )
+
+Documented in L<Catalyst>
+
+=cut
+
+sub go {
+    my $self = shift;
+    my ( $c, $command ) = @_;
+    my ( $action, $args ) = $self->_command2action(@_);
+
+    unless ($action && defined $action->namespace) {
+        my $error =
+            qq/Couldn't go to command "$command": /
+          . qq/Invalid action or component./;
+        $c->error($error);
+        $c->log->debug($error) if $c->debug;
+        return 0;
+    }
+
+    $action = $self->expand_action($action);
+
+    local $c->request->{arguments} = $args;
+    $c->namespace($action->namespace);
+    $c->action($action);
+    $self->dispatch($c);
+
+    die $Catalyst::GO;
+}
+
+=head2 $self->forward( $c, $command [, \@arguments ] )
+
+Documented in L<Catalyst>
+
+=cut
+
+sub forward {
+    my $self = shift;
+    my ( $c, $command ) = @_;
+    my ( $action, $args ) = $self->_command2action(@_);
 
     unless ($action) {
         my $error =
@@ -169,9 +212,11 @@ sub forward {
 
     no warnings 'recursion';
 
-    local $c->request->{arguments} = \@args;
+    my $orig_args = $c->request->arguments();
+    $c->request->arguments($args);
     $action->dispatch( $c );
-
+    $c->request->arguments($orig_args);
+    
     return $c->state;
 }
 
@@ -253,9 +298,10 @@ Find an dispatch type that matches $c->req->path, and set args from it.
 
 sub prepare_action {
     my ( $self, $c ) = @_;
-    my $path = $c->req->path;
-    my @path = split /\//, $c->req->path;
-    $c->req->args( \my @args );
+    my $req = $c->req;
+    my $path = $req->path;
+    my @path = split /\//, $req->path;
+    $req->args( \my @args );
 
     unshift( @path, '' );    # Root action
 
@@ -278,10 +324,10 @@ sub prepare_action {
         unshift @args, $arg;
     }
 
-    s/%([0-9A-Fa-f]{2})/chr(hex($1))/eg for grep { defined } @{$c->req->captures||[]};
+    s/%([0-9A-Fa-f]{2})/chr(hex($1))/eg for grep { defined } @{$req->captures||[]};
 
-    $c->log->debug( 'Path is "' . $c->req->match . '"' )
-      if ( $c->debug && $c->req->match );
+    $c->log->debug( 'Path is "' . $req->match . '"' )
+      if ( $c->debug && length $req->match );
 
     $c->log->debug( 'Arguments are "' . join( '/', @args ) . '"' )
       if ( $c->debug && @args );
@@ -297,16 +343,16 @@ sub get_action {
     my ( $self, $name, $namespace ) = @_;
     return unless $name;
 
-    $namespace = join( "/", grep { length } split '/', $namespace || "" );
+    $namespace = join( "/", grep { length } split '/', ( defined $namespace ? $namespace : "" ) );
 
-    return $self->_action_hash->{"$namespace/$name"};
+    return $self->_action_hash->{"${namespace}/${name}"};
 }
 
 =head2 $self->get_action_by_path( $path ); 
-   
+
 Returns the named action by its full path. 
 
-=cut 
+=cut
 
 sub get_action_by_path {
     my ( $self, $path ) = @_;
@@ -351,6 +397,7 @@ sub get_containers {
 
     return reverse grep { defined } @containers, $self->_container_hash->{''};
 
+    #return (split '/', $namespace); # isnt this more clear?
     my @parts = split '/', $namespace;
 }
 
@@ -376,6 +423,17 @@ sub uri_for_action {
     return undef;
 }
 
+sub expand_action {
+    my ($self, $action) = @_;
+
+    foreach my $dispatch_type (@{ $self->_dispatch_types }) {
+        my $expanded = $dispatch_type->expand_action($action);
+        return $expanded if $expanded;
+    }
+
+    return $action;
+}
+
 =head2 $self->register( $c, $action )
 
 Make sure all required dispatch types for this action are loaded, then
@@ -389,12 +447,13 @@ sub register {
 
     my $registered = $self->_registered_dispatch_types;
 
-    my $priv = 0;
+    #my $priv = 0; #seems to be unused
     foreach my $key ( keys %{ $action->attributes } ) {
         next if $key eq 'Private';
         my $class = "Catalyst::DispatchType::$key";
         unless ( $registered->{$class} ) {
-            eval "require $class";
+            #some error checking rethrowing here wouldn't hurt.
+            eval { Class::MOP::load_class($class) };
             push( @{ $self->_dispatch_types }, $class->new ) unless $@;
             $registered->{$class} = 1;
         }
@@ -453,10 +512,6 @@ sub _find_or_create_namespace_node {
 sub setup_actions {
     my ( $self, $c ) = @_;
 
-    $self->_dispatch_types( [] );
-    $self->_registered_dispatch_types( {} );
-    $self->_method_action_class('Catalyst::Action');
-    $self->_action_container_class('Catalyst::ActionContainer');
 
     my @classes =
       $self->_load_dispatch_types( @{ $self->preload_dispatch_types } );
@@ -512,7 +567,8 @@ sub _load_dispatch_types {
     for my $type (@types) {
         my $class =
           ( $type =~ /^\+(.*)$/ ) ? $1 : "Catalyst::DispatchType::${type}";
-        eval "require $class";
+
+        eval { Class::MOP::load_class($class) };
         Catalyst::Exception->throw( message => qq/Couldn't load "$class"/ )
           if $@;
         push @{ $self->_dispatch_types }, $class->new;
@@ -523,14 +579,16 @@ sub _load_dispatch_types {
     return @loaded;
 }
 
+no Moose;
+__PACKAGE__->meta->make_immutable;
+
 =head2 meta
 
 Provided by Moose
 
-=head1 AUTHOR
+=head1 AUTHORS
 
-Sebastian Riedel, C<sri@cpan.org>
-Matt S Trout, C<mst@shadowcatsystems.co.uk>
+Catalyst Contributors, see Catalyst.pm
 
 =head1 COPYRIGHT