Initial Commit

database/perl/lib/Perl/PrereqScanner/NotQuiteLite/Parser/Plack.pm

@@ -0,0 +1,87 @@
+package Perl::PrereqScanner::NotQuiteLite::Parser::Plack;
+
+use strict;
+use warnings;
+use Perl::PrereqScanner::NotQuiteLite::Util;
+
+sub register { return {
+  use => {
+    'Plack::Builder' => 'parse_plack_builder_args',
+  },
+}}
+
+sub parse_plack_builder_args {
+  my ($class, $c, $used_module, $raw_tokens) = @_;
+
+  # TODO: support add_middleware(_if) methods?
+
+  $c->register_keyword_parser(
+    'enable',
+    [$class, 'parse_enable_args', $used_module],
+  );
+  $c->register_keyword_parser(
+    'enable_if',
+    [$class, 'parse_enable_if_args', $used_module],
+  );
+}
+
+sub parse_enable_args {
+  my ($class, $c, $used_module, $raw_tokens) = @_;
+
+  my $tokens = convert_string_tokens($raw_tokens);
+  shift @$tokens; # discard 'enable' itself
+
+  my $module = shift @$tokens or return;
+  if ($module =~ s/^\+//) {
+    $c->add($module => 0);
+  } else {
+    $module =~ s/^Plack::Middleware:://;
+    $c->add("Plack::Middleware::".$module => 0);
+  }
+}
+
+sub parse_enable_if_args {
+  my ($class, $c, $used_module, $raw_tokens) = @_;
+
+  while(my $token = shift @$raw_tokens) {
+    last if $token->[1] eq 'COMMA' or ref $token->[0];
+  }
+  shift @$raw_tokens if $raw_tokens->[0][1] eq 'COMMA';
+
+  my $tokens = convert_string_tokens($raw_tokens);
+
+  my $module = shift @$tokens or return;
+  if ($module =~ s/^\+//) {
+    $c->add($module => 0);
+  } else {
+    $module =~ s/^Plack::Middleware:://;
+    $c->add("Plack::Middleware::".$module => 0);
+  }
+}
+
+1;
+
+__END__
+
+=encoding utf-8
+
+=head1 NAME
+
+Perl::PrereqScanner::NotQuiteLite::Parser::Plack
+
+=head1 DESCRIPTION
+
+This parser is to deal with Plack middlewares loaded by L<Plack::Builder>.
+
+=head1 AUTHOR
+
+Kenichi Ishigaki, E<lt>ishigaki@cpan.orgE<gt>
+
+=head1 COPYRIGHT AND LICENSE
+
+This software is copyright (c) 2015 by Kenichi Ishigaki.
+
+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