NAME
    Mo::utils - Mo utilities.

SYNOPSIS
     use Mo::utils qw(check_array check_array_object check_bool check_code check_isa check_length check_number
             check_number_of_items check_required check_string_begin check_strings);

     check_array($self, $key);
     check_array_object($self, $key, $class, $class_name);
     check_bool($self, $key);
     check_code($self, $key);
     check_isa($self, $key, $class);
     check_length($self, $key, $max_length);
     check_number($self, $key);
     check_number_of_items($self, $list_method, $item_method, $object_name, $item_name);
     check_required($self, $key);
     check_string_begin($self, $key, $string_base);
     check_strings($self, $key, $strings_ar);

DESCRIPTION
    Mo utilities for checking of data objects.

SUBROUTINES
  "check_array"
     check_array($self, $key);

    Check parameter defined by $key which is reference to array.

    Put error if check isn't ok.

    Returns undef.

  "check_array_object"
     check_array_object($self, $key, $class, $class_name);

    Check parameter defined by $key which is reference to array with
    instances of some object type ($class). $class_name is used to error
    message.

    Put error if check isn't ok.

    Returns undef.

  "check_bool"
     check_bool($self, $key);

    Check parameter defined by $key if value is bool or not.

    Put error if check isn't ok.

    Returns undef.

  "check_code"
     check_code($self, $key);

    Check parameter defined by $key which is code reference or no.

    Put error if check isn't ok.

    Returns undef.

  "check_isa"
     check_isa($self, $key, $class);

    Check parameter defined by $key which is instance of $class or no.

    Put error if check isn't ok.

    Returns undef.

  "check_length"
     check_length($self, $key, $max_length);

    Check length of value for parameter defined by $key. Maximum length is
    defined by $max_length.

    Put error if check isn't ok.

    Returns undef.

  "check_number"
     check_number($self, $key);

    Check parameter defined by $key which is number (positive or negative)
    or no.

    Put error if check isn't ok.

    Returns undef.

  "check_number_of_items"
     check_number_of_items($self, $list_method, $item_method, $object_name, $item_name);

    Check amount of unique items defined by $item_method method value. List
    items via $list_method and get value via $item_method method.
    $object_name and $item_name are variables for error output.

    Put error if check isn't ok.

    Returns undef.

  "check_required"
     check_required($self, $key);

    Check required parameter defined by $key.

    Put error if check isn't ok.

    Returns undef.

  "check_string_begin"
     check_string_begin($self, $key, $string_base);

    Check parameter if it is correct string which begins with base.

    Put error if string base doesn't exist. Put error string base isn't
    present in string on begin.

    Returns undef.

  "check_strings"
     check_strings($self, $key, $strings_ar);

    Check parameter if it is correct string from strings list.

    Put error if strings definition is undef or not list of strings. Put
    error if check isn't ok.

    Returns undef.

ERRORS
     check_array():
             Parameter '%s' must be a array.
                     Value: %s
                     Reference: %s

     check_array_object():
             Parameter '%s' must be a array.
             %s isn't '%s' object.

     check_bool():
             Parameter '%s' must be a bool (0/1).
                     Value: %s

     check_code():
             Parameter '%s' must be a code.
                     Value: %s

     check_isa():
             Parameter '%s' must be a '%s' object.
                     Value: %s
                     Reference: %s

     check_length():
             Parameter '%s' has length greater than '%s'.
                     Value: %s

     check_number():
             Parameter '%s' must a number.
                     Value: %s

     check_number_of_items():
             %s for %s '%s' has multiple values.

     check_required():
             Parameter '%s' is required.

     check_string_begin():
             Parameter '%s' must have defined string base.
             Parameter '%s' must begin with defined string base.
                     String: %s
                     String base: %s

     check_strings():
             Parameter '%s' must have strings definition.
             Parameter '%s' must have right string definition.
             Parameter '%s' must be one of defined strings.
                     String: %s
                     Possible strings: %s

EXAMPLE1
     use strict;
     use warnings;

     use Mo::utils qw(check_array);

     my $self = {
             'key' => ['foo'],
     };
     check_array($self, 'key');

     # Print out.
     print "ok\n";

     # Output:
     # ok

EXAMPLE2
     use strict;
     use warnings;

     use Error::Pure;
     use Mo::utils qw(check_array);

     $Error::Pure::TYPE = 'Error';

     my $self = {
             'key' => 'foo',
     };
     check_array($self, 'key');

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [..utils.pm:?] Parameter 'key' must be a array.

EXAMPLE3
     use strict;
     use warnings;

     use Mo::utils qw(check_array_object);
     use Test::MockObject;

     my $self = {
             'key' => [
                     Test::MockObject->new,
             ],
     };
     check_array_object($self, 'key', 'Test::MockObject', 'Value');

     # Print out.
     print "ok\n";

     # Output:
     # ok

EXAMPLE4
     use strict;
     use warnings;

     use Error::Pure;
     use Mo::utils qw(check_array_object);

     $Error::Pure::TYPE = 'Error';

     my $self = {
             'key' => [
                     'foo',
             ],
     };
     check_array_object($self, 'key', 'Test::MockObject', 'Value');

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [..utils.pm:?] Value isn't 'Test::MockObject' object.

EXAMPLE5
     use strict;
     use warnings;

     use Mo::utils qw(check_bool);
     use Test::MockObject;

     my $self = {
             'key' => 1,
     };
     check_bool($self, 'key');

     # Print out.
     print "ok\n";

     # Output:
     # ok

EXAMPLE6
     use strict;
     use warnings;

     use Error::Pure;
     use Mo::utils qw(check_bool);

     $Error::Pure::TYPE = 'Error';

     my $self = {
             'key' => 'bad',
     };
     check_bool($self, 'key');

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [..utils.pm:?] Parameter 'key' must be a bool (0/1).

EXAMPLE7
     use strict;
     use warnings;

     use Mo::utils qw(check_code);
     use Test::MockObject;

     my $self = {
             'key' => sub {},
     };
     check_code($self, 'key');

     # Print out.
     print "ok\n";

     # Output:
     # ok

EXAMPLE8
     use strict;
     use warnings;

     use Error::Pure;
     use Mo::utils qw(check_code);

     $Error::Pure::TYPE = 'Error';

     my $self = {
             'key' => 'bad',
     };
     check_code($self, 'key');

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [..utils.pm:?] Parameter 'key' must be a code.

EXAMPLE9
     use strict;
     use warnings;

     use Mo::utils qw(check_isa);
     use Test::MockObject;

     my $self = {
             'key' => Test::MockObject->new,
     };
     check_isa($self, 'key', 'Test::MockObject');

     # Print out.
     print "ok\n";

     # Output:
     # ok

EXAMPLE10
     use strict;
     use warnings;

     $Error::Pure::TYPE = 'Error';

     use Mo::utils qw(check_isa);

     my $self = {
             'key' => 'foo',
     };
     check_isa($self, 'key', 'Test::MockObject');

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [...utils.pm:?] Parameter 'key' must be a 'Test::MockObject' object.

EXAMPLE11
     use strict;
     use warnings;

     $Error::Pure::TYPE = 'Error';

     use Mo::utils qw(check_length);

     my $self = {
             'key' => 'foo',
     };
     check_length($self, 'key', 3);

     # Print out.
     print "ok\n";

     # Output like:
     # ok

EXAMPLE12
     use strict;
     use warnings;

     $Error::Pure::TYPE = 'Error';

     use Mo::utils qw(check_length);

     my $self = {
             'key' => 'foo',
     };
     check_length($self, 'key', 2);

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [...utils.pm:?] Parameter 'key' has length greater than '2'.

EXAMPLE13
     use strict;
     use warnings;

     use Mo::utils qw(check_number);

     my $self = {
             'key' => '10',
     };
     check_number($self, 'key');

     # Print out.
     print "ok\n";

     # Output:
     # ok

EXAMPLE14
     use strict;
     use warnings;

     $Error::Pure::TYPE = 'Error';

     use Mo::utils qw(check_number);

     my $self = {
             'key' => 'foo',
     };
     check_number($self, 'key');

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [...utils.pm:?] Parameter 'key' must be a number.

EXAMPLE15
     use strict;
     use warnings;

     use Test::MockObject;

     $Error::Pure::TYPE = 'Error';

     use Mo::utils qw(check_number_of_items);

     # Item object #1.
     my $item1 = Test::MockObject->new;
     $item1->mock('value', sub {
             return 'value1',
     });

     # Item object #1.
     my $item2 = Test::MockObject->new;
     $item2->mock('value', sub {
             return 'value2',
     });

     # Tested object.
     my $self = Test::MockObject->new({
             'key' => [],
     });
     $self->mock('list', sub {
             return [
                     $item1,
                     $item2,
             ];
     });

     # Check number of items.
     check_number_of_items($self, 'list', 'value', 'Test', 'Item');

     # Print out.
     print "ok\n";

     # Output like:
     # ok

EXAMPLE16
     use strict;
     use warnings;

     use Test::MockObject;

     $Error::Pure::TYPE = 'Error';

     use Mo::utils qw(check_number_of_items);

     # Item object #1.
     my $item1 = Test::MockObject->new;
     $item1->mock('value', sub {
             return 'value1',
     });

     # Item object #2.
     my $item2 = Test::MockObject->new;
     $item2->mock('value', sub {
             return 'value1',
     });

     # Tested object.
     my $self = Test::MockObject->new({
             'key' => [],
     });
     $self->mock('list', sub {
             return [
                     $item1,
                     $item2,
             ];
     });

     # Check number of items.
     check_number_of_items($self, 'list', 'value', 'Test', 'Item');

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [...utils.pm:?] Test for Item 'value1' has multiple values.

EXAMPLE17
     use strict;
     use warnings;

     use Mo::utils qw(check_required);

     my $self = {
             'key' => 'value',
     };
     check_required($self, 'key');

     # Print out.
     print "ok\n";

     # Output:
     # ok

EXAMPLE18
     use strict;
     use warnings;

     use Error::Pure;
     use Mo::utils qw(check_required);

     $Error::Pure::TYPE = 'Error';

     my $self = {
             'key' => undef,
     };
     check_required($self, 'key');

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [...utils.pm:?] Parameter 'key' is required.

EXAMPLE19
     use strict;
     use warnings;

     use Mo::utils qw(check_string_begin);

     my $self = {
             'key' => 'http://example.com/foo',
     };
     check_string_begin($self, 'key', 'http://example.com/');

     # Print out.
     print "ok\n";

     # Output:
     # ok

EXAMPLE20
     use strict;
     use warnings;

     use Error::Pure;
     use Mo::utils qw(check_string_begin);

     $Error::Pure::TYPE = 'Error';

     my $self = {
             'key' => 'http://example/foo',
     };
     check_string_begin($self, 'key', 'http://example.com/');

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [...utils.pm:?] Parameter 'key' must begin with defined string base.

EXAMPLE21
     use strict;
     use warnings;

     use Mo::utils qw(check_strings);

     my $self = {
             'key' => 'value',
     };
     check_strings($self, 'key', ['value', 'foo']);

     # Print out.
     print "ok\n";

     # Output:
     # ok

EXAMPLE22
     use strict;
     use warnings;

     use Error::Pure;
     use Mo::utils qw(check_strings);

     $Error::Pure::TYPE = 'Error';

     my $self = {
             'key' => 'bar',
     };
     check_strings($self, 'key', ['foo', 'value']);

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [...utils.pm:?] Parameter 'key' must be one of defined strings.

DEPENDENCIES
    Exporter, Error::Pure, List::Utils, Readonly, Scalar::Util.

SEE ALSO
    Mo  Micro Objects. Mo is less.

    Mo::utils::Language
        Mo language utilities.

    Wikibase::Datatype::Utils
        Wikibase datatype utilities.

REPOSITORY
    <https://github.com/michal-josef-spacek/Mo-utils>

AUTHOR
    Michal Josef Špaček <mailto:skim@cpan.org>

    <http://skim.cz>

LICENSE AND COPYRIGHT
    © 2020-2023 Michal Josef Špaček

    BSD 2-Clause License

VERSION
    0.16