1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
package Dancer2::Core::Role::DSL;
# ABSTRACT: Role for DSL
$Dancer2::Core::Role::DSL::VERSION = '1.0.0';
use Moo::Role;
use Dancer2::Core::Types;
use Carp 'croak';
use Scalar::Util qw();
with 'Dancer2::Core::Role::Hookable';
has app => ( is => 'ro', required => 1 );
has keywords => (
is => 'rw',
isa => HashRef,
lazy => 1,
builder => '_build_dsl_keywords',
);
sub _build_dsl_keywords {
my ($self) = @_;
$self->can('dsl_keywords')
? $self->dsl_keywords
: {};
}
sub register {
my ( $self, $keyword, $is_global ) = @_;
my $keywords = $self->keywords;
my $pkg = ref($self);
$pkg =~ s/__WITH__.+$//;
if ( exists $keywords->{$keyword} ) {
my $reg_pkg = $keywords->{$keyword}{'pkg'};
$reg_pkg =~ s/__WITH__.+$//;
$reg_pkg eq $pkg and return;
croak "[$pkg] Keyword $keyword already registered by $reg_pkg";
}
$keywords->{$keyword} = { is_global => $is_global, pkg => $pkg };
}
sub dsl { $_[0] }
# exports new symbol to caller
sub export_symbols_to {
my ( $self, $caller, $args ) = @_;
my $exports = $self->_construct_export_map($args);
## no critic
foreach my $export ( keys %{$exports} ) {
no strict 'refs'; ## no critic (TestingAndDebugging::ProhibitNoStrict)
my $existing = *{"${caller}::${export}"}{CODE};
next if defined $existing;
*{"${caller}::${export}"} = $exports->{$export};
}
## use critic
return keys %{$exports};
}
# private
sub _compile_keyword {
my ( $self, $keyword, $opts ) = @_;
my $code = $opts->{is_global}
? sub { $self->$keyword(@_) }
: sub {
croak "Function '$keyword' must be called from a route handler"
unless defined $Dancer2::Core::Route::REQUEST;
$self->$keyword(@_)
};
return $self->_apply_prototype($code, $opts);
}
sub _apply_prototype {
my ($self, $code, $opts) = @_;
# set prototype if one is defined for the keyword. undef => no prototype
my $prototype;
exists $opts->{'prototype'} and $prototype = $opts->{'prototype'};
return Scalar::Util::set_prototype( \&$code, $prototype );
}
sub _construct_export_map {
my ( $self, $args ) = @_;
my $keywords = $self->keywords;
my %map;
foreach my $keyword ( keys %$keywords ) {
# check if the keyword were excluded from importation
$args->{ '!' . $keyword } and next;
$map{$keyword} = $self->_compile_keyword( $keyword, $keywords->{$keyword} );
}
return \%map;
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Dancer2::Core::Role::DSL - Role for DSL
=head1 VERSION
version 1.0.0
=head1 AUTHOR
Dancer Core Developers
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2023 by Alexis Sukrieh.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
