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#!perl |
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#PODNAME: Raisin::Param |
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#ABSTRACT: Parameter class for Raisin |
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286804
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use strict; |
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use warnings; |
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package Raisin::Param; |
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$Raisin::Param::VERSION = '0.92'; |
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use Carp; |
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1162
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use Plack::Util::Accessor qw( |
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named |
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required |
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default |
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desc |
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enclosed |
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name |
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regex |
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type |
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coerce |
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1585
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); |
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use Raisin::Util; |
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my @ATTRIBUTES = qw(name type default regex desc coerce); |
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my @LOCATIONS = qw(path formData body header query); |
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sub new { |
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my ($class, %args) = @_; |
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my $self = bless {}, $class; |
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$self->{named} = $args{named} || 0; |
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$self->{required} = $args{type} =~ /^require(s|d)$/ ? 1 : 0; |
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return unless $self->_parse($args{spec}); |
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$self; |
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} |
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sub _parse { |
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my ($self, $spec) = @_; |
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$self->{$_} = $spec->{$_} for @ATTRIBUTES; |
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if ($spec->{in}) { |
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return unless $self->in($spec->{in}); |
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} |
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if ($spec->{encloses}) { |
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if ($self->type->name eq 'HashRef') { |
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$self->{enclosed} = _compile_enclosed($spec->{encloses}); |
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} |
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else { |
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Raisin::log( |
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warn => 'Ignoring enclosed parameters for `%s`, type should be `HashRef` not `%s`', |
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$self->name, $self->type->name |
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); |
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} |
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} |
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$self->{coerce} = defined($spec->{coerce}) ? $spec->{coerce} : 1; |
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return 1; |
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} |
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sub _compile_enclosed { |
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my $params = shift; |
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my @enclosed; |
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my $next_param = Raisin::Util::iterate_params($params); |
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while (my ($type, $spec) = $next_param->()) { |
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last unless $type; |
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push @enclosed, Raisin::Param->new( |
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named => 0, |
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type => $type, # -> requires/optional |
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spec => $spec, # -> { name => ..., type => ... } |
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); |
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} |
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\@enclosed; |
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} |
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sub display_name { shift->name } |
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sub in { |
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my ($self, $value) = @_; |
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if (defined $value) { |
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unless (grep { $value eq $_ } @LOCATIONS) { |
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Raisin::log(warn => '`%s` should be one of: %s', |
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$self->name, join ', ', @LOCATIONS); |
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return; |
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} |
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$self->{in} = $value; |
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} |
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$self->{in}; |
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} |
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sub validate { |
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my ($self, $ref_value, $quiet) = @_; |
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# Required and empty |
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# Only optional parameters can have default value |
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if ($self->required && !defined($$ref_value)) { |
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Raisin::log(warn => '`%s` is required', $self->name) unless $quiet; |
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return; |
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} |
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# Optional and empty |
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if (!$self->required && !defined($$ref_value)) { |
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Raisin::log(info => '`%s` optional and empty', $self->name); |
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return 1; |
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} |
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# Type check |
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eval { |
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if ($self->type->has_coercion && $self->coerce) { |
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$$ref_value = $self->type->coerce($$ref_value); |
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} |
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if ($self->type->isa('Moose::Meta::TypeConstraint')) { |
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$self->type->assert_valid($$ref_value); |
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} |
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else { |
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$$ref_value = $self->type->($$ref_value); |
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} |
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}; |
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if (my $e = $@) { |
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unless ($quiet) { |
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Raisin::log(warn => 'Param `%s` didn\'t pass constraint `%s` with value "%s"', |
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$self->name, $self->type->name, $$ref_value); |
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} |
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return; |
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} |
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# Nested |
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if ($self->type->name eq 'HashRef' && $self->enclosed) { |
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for my $p (@{ $self->enclosed }) { |
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my $v = $$ref_value; |
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if ($self->type->name eq 'HashRef') { |
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$v = $v->{ $p->name }; |
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} |
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return unless $p->validate(\$v, $quiet); |
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} |
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} |
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# Regex |
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elsif ($self->regex && $$ref_value !~ $self->regex) { |
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unless ($quiet) { |
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Raisin::log(warn => 'Param `%s` didn\'t match regex `%s` with value "%s"', |
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$self->name, $self->regex, $$ref_value); |
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} |
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3
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1157
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return; |
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} |
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1222
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1; |
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} |
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1; |
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__END__ |