File Coverage

blib/lib/Types/SQL.pm

Criterion	Covered	Total	%
statement	47	51	92.1
branch	8	12	66.6
condition	2	2	100.0
subroutine	14	16	87.5
pod			n/a
total	71	81	87.6

package Types::SQL;

use v5.10;

use strict;
use warnings;

use Type::Library
  -base,
  -declare => qw/ BigInt Char Integer Numeric Serial SmallInt Text Varchar /;

use Ref::Util qw/ is_arrayref /;
use Type::Utils 0.44 -all;
use Types::Standard -types;
use PerlX::Maybe qw/ maybe /;

use namespace::autoclean;

# RECOMMEND PREREQ: PerlX::Maybe::XS
# RECOMMEND PREREQ: Ref::Util::XS
# RECOMMEND PREREQ: Type::Tiny::XS

# ABSTRACT: a library of SQL types

our $VERSION = 'v0.6.1';


our $Blob = _generate_type(
    name             => 'Blob',
    parent           => Str,
    dbic_column_info => sub {
        my ($self) = @_;
        return (
            is_numeric => 0,
            data_type  => 'blob',
        );
    },
);


our $Text = _generate_type(
    name             => 'Text',
    parent           => Str,
    dbic_column_info => sub {
        my ($self) = @_;
        return (
            is_numeric => 0,
            data_type  => 'text',
        );
    },
);


our $Varchar = _generate_type(
    name                 => 'Varchar',
    parent               => $Text,
    constraint_generator => \&_size_constraint_generator,
    dbic_column_info     => sub {
        my ( $self, $size ) = @_;
        my $parent = $self->parent->my_methods->{dbic_column_info};
        return (
            $parent->( $self->parent, $size // $self->type_parameter ),
            data_type => 'varchar',
            maybe size => $size // $self->type_parameter,
        );
    },
);


our $Char = _generate_type(
    name                 => 'Char',
    parent               => $Text,
    constraint_generator => \&_size_constraint_generator,
    dbic_column_info     => sub {
        my ( $self, $size ) = @_;
        my $parent = $self->parent->my_methods->{dbic_column_info};
        return (
            $parent->( $self->parent, $size // $self->type_parameter // 1 ),
            data_type => 'char',
            size      => $size // $self->type_parameter // 1,
        );
    },
);


our $Integer = _generate_type(
    name                 => 'Integer',
    parent               => Int,
    constraint_generator => \&_size_constraint_generator,
    dbic_column_info     => sub {
        my ( $self, $size ) = @_;
        return (
            data_type  => 'integer',
            is_numeric => 1,
            maybe size => $size // $self->type_parameter,
        );
    },
);


declare SmallInt, as Integer[5];
declare BigInt, as Integer[19];


our $Serial = _generate_type(
    name                 => 'Serial',
    parent               => $Integer,
    constraint_generator => \&_size_constraint_generator,
    dbic_column_info     => sub {
        my ( $self, $size ) = @_;
        my $parent = $self->parent->my_methods->{dbic_column_info};
        return (
            $parent->( $self->parent, $size // $self->type_parameter ),
            data_type         => 'serial',
            is_auto_increment => 1,
        );
    },
);


our $Numeric = _generate_type(
    name                 => 'Numeric',
    parent               => Num,
    constraint_generator => \&_size_range_constraint_generator,
    dbic_column_info     => sub {
        my ( $self, $size ) = @_;
        return (
            data_type  => 'numeric',
            is_numeric => 1,
            maybe size => $size // $self->parameters,
        );
    },
);

sub _size_constraint_generator {
    if (@_) {
        my ($size) = @_;
        die "Size must be a positive integer" unless $size =~ /^[1-9]\d*$/;
        my $re = qr/^0*\d{1,$size}$/;
        return sub { $_ =~ $re };
    }
    else {
        return sub { $_ =~ /^\d+$/ };
    }
}

sub _size_range_constraint_generator {
    if (@_) {
        my ( $prec, $scale ) = @_;
        $scale //= 0;

        die "Precision must be a positive integer" unless $prec =~ /^[1-9]\d*$/;
        die "Scale must be a positive integer"     unless $scale =~ /^\d+$/;

        my $left = $prec - $scale;
        die "Scale must be less than the precision" if ( $left < 0 );

        my $re = qr/^0*\d{0,$left}([.]\d{0,$scale}0*)?$/;
        return sub { $_ =~ $re };
    }
    else {
        return sub { $_ =~ /^\d+$/ };
    }
}

sub _generate_type {
    my %args = @_;

    $args{my_methods} =
      { maybe dbic_column_info => delete $args{dbic_column_info}, };

    my $type = Type::Tiny->new(%args);
    __PACKAGE__->meta->add_type($type);
    return $type;
}


__PACKAGE__->meta->make_immutable;

__END__