/usr/share/perl5/Validation/Class/Util.pm is in libvalidation-class-perl 7.900054-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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package Validation::Class::Util;
use strict;
use warnings;
our $VERSION = '7.900054'; # VERSION
use Module::Runtime 'use_module';
use Scalar::Util 'blessed';
use Carp 'confess';
use Exporter ();
our @ISA = qw(Exporter);
our @EXPORT = qw(
build_args
build_args_collection
has
hold
isa_arrayref
isa_classref
isa_coderef
isa_hashref
isa_listing
isa_mapping
isa_prototype
isa_regexp
prototype_registry
);
sub build_args {
my $self = shift;
my $class = ref $self || $self;
if ( scalar @_ == 1 ) {
confess
"The new() method for $class expects single arguments to " .
"take the form of a hash reference"
unless defined $_[0] && ref $_[0] eq 'HASH'
;
return {%{$_[0]}};
}
elsif ( @_ % 2 ) {
confess
"The new() method for $class expects a hash reference or a " .
"key/value list. You passed an odd number of arguments"
;
}
else {
return {@_};
}
}
sub build_args_collection {
my $class = shift;
# Validation::Class::Mapping should already be loaded
return Validation::Class::Mapping->new($class->build_args(@_));
}
sub has {
my ( $attrs, $default ) = @_;
return unless $attrs;
confess "Error creating accessor, default must be a coderef or constant"
if ref $default && ref $default ne 'CODE';
$attrs = [$attrs] unless ref $attrs eq 'ARRAY';
for my $attr (@$attrs) {
confess "Error creating accessor '$attr', name has invalid characters"
unless $attr =~ /^[a-zA-Z_]\w*$/;
my $code;
if ( defined $default ) {
$code = sub {
if ( @_ == 1 ) {
return $_[0]->{$attr} if exists $_[0]->{$attr};
return $_[0]->{$attr}
= ref $default eq 'CODE'
? $default->( $_[0] )
: $default;
}
$_[0]->{$attr} = $_[1];
$_[0];
};
}
else {
$code = sub {
return $_[0]->{$attr} if @_ == 1;
$_[0]->{$attr} = $_[1];
$_[0];
};
}
no strict 'refs';
no warnings 'redefine';
my $class = caller(0);
*{"$class\::$attr"} = $code;
}
return;
}
sub hold {
my ( $attrs, $default ) = @_;
return unless $attrs;
confess "Error creating accessor, default is required and must be a coderef"
if ref $default ne 'CODE';
$attrs = [$attrs] unless ref $attrs eq 'ARRAY';
for my $attr (@$attrs) {
confess "Error creating accessor '$attr', name has invalid characters"
unless $attr =~ /^[a-zA-Z_]\w*$/;
my $code;
$code = sub {
if ( @_ == 1 ) {
return $_[0]->{$attr} if exists $_[0]->{$attr};
return $_[0]->{$attr} = $default->( $_[0] );
}
# values are read-only cannot be changed
confess "Error attempting to modify the read-only attribute ($attr)";
};
no strict 'refs';
no warnings 'redefine';
my $class = caller(0);
*{"$class\::$attr"} = $code;
}
return;
}
sub import {
strict->import;
warnings->import;
__PACKAGE__->export_to_level(1, @_);
return;
}
sub isa_arrayref {
return "ARRAY" eq ref(shift) ? 1 : 0;
}
sub isa_classref {
my ($object) = @_;
return blessed(shift) ? 1 : 0;
}
sub isa_coderef {
return "CODE" eq ref(shift) ? 1 : 0;
}
sub isa_hashref {
return "HASH" eq ref(shift) ? 1 : 0;
}
sub isa_listing {
return "Validation::Class::Listing" eq ref(shift) ? 1 : 0;
}
sub isa_mapping {
return "Validation::Class::Mapping" eq ref(shift) ? 1 : 0;
}
sub isa_prototype {
return prototype_registry->has(shift) ? 1 : 0;
}
sub isa_regexp {
return "REGEXP" eq uc(ref(shift)) ? 1 : 0;
}
sub prototype_registry {
# Validation::Class::Prototype should be already loaded
return Validation::Class::Prototype->registry;
}
1;
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