4 use Scalar::Util qw(blessed);
6 sub MAGIC_MIDDLEWARE_KEY { __PACKAGE__.'.middleware' }
9 use Web::Dispatch::Parser;
10 use Web::Dispatch::Node;
12 with 'Web::Dispatch::ToApp';
14 has app => (is => 'ro', required => 1);
16 is => 'ro', default => quote_sub q{ 'Web::Dispatch::Parser' }
19 is => 'ro', default => quote_sub q{ 'Web::Dispatch::Node' }
21 has node_args => (is => 'ro', default => quote_sub q{ {} });
22 has _parser => (is => 'lazy');
26 $self->parser_class->new;
30 my ($self, $env) = @_;
31 $self->_dispatch($env, $self->app);
35 my ($self, $env, @match) = @_;
36 while (my $try = shift @match) {
38 return $try if ref($try) eq 'ARRAY';
39 if (ref($try) eq 'HASH') {
40 $env = { %$env, %$try };
44 my @result = $self->_to_try($try, \@match)->($env, @match);
45 next unless @result and defined($result[0]);
47 my $first = $result[0];
48 my $dispatch = $self->_valid_dispatch( $first, \@result, \@match, $env );
49 return $dispatch if $dispatch;
51 # make a copy so we don't screw with it assigning further up
53 unshift @match, sub { $self->_dispatch($env, @result) };
60 my ( $self, $first, $result, $match, $env ) = @_;
62 if ( ref($first) eq 'ARRAY' ) {
63 return $self->_unpack_array_match( $first );
65 elsif ( blessed($first) && $first->isa('Plack::Middleware') ) {
66 return $self->_prepare_middleware( $first, $result );
68 elsif ( ref($first) eq 'HASH' and $first->{+MAGIC_MIDDLEWARE_KEY} ) {
69 return $self->_unwrap_middleware( $first, $match, $env );
71 elsif ( blessed($first) && !$first->can('to_app') ) {
78 sub _unpack_array_match {
79 my ( $self, $match ) = @_;
80 return $match->[0] if @{$match} == 1 and ref($match->[0]) eq 'CODE';
84 sub _prepare_middleware {
85 my ( $self, $match, $results ) = @_;
86 die "Multiple results but first one is a middleware ($match)"
88 # middleware needs to uplevel exactly once to wrap the rest of the
89 # level it was created for - next elsif unwraps it
90 return { MAGIC_MIDDLEWARE_KEY, $match };
93 sub _unwrap_middleware {
94 my ( $self, $first, $match, $env ) = @_;
96 my $mw = $first->{+MAGIC_MIDDLEWARE_KEY};
98 $mw->app(sub { $self->_dispatch($_[0], @{$match}) });
100 return $mw->to_app->($env);
104 my ($self, $try, $more) = @_;
105 if (ref($try) eq 'CODE') {
106 if (defined(my $proto = prototype($try))) {
107 $self->_construct_node(
108 match => $self->_parser->parse($proto), run => $try
113 } elsif (!ref($try) and ref($more->[0]) eq 'CODE') {
114 $self->_construct_node(
115 match => $self->_parser->parse($try), run => shift(@$more)
117 } elsif (blessed($try) && $try->can('to_app')) {
120 die "No idea how we got here with $try";
124 sub _construct_node {
125 my ($self, %args) = @_;
126 $self->node_class->new({ %{$self->node_args}, %args });