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|
use 5.008;
use strict;
use warnings;
package Sub::HandlesVia::HandlerLibrary::Number;
our $AUTHORITY = 'cpan:TOBYINK';
our $VERSION = '0.052000';
use Sub::HandlesVia::HandlerLibrary;
our @ISA = 'Sub::HandlesVia::HandlerLibrary';
use Sub::HandlesVia::Handler qw( handler );
use Types::Standard qw( Num Any Item Defined );
our @METHODS = qw(
set get add sub mul div mod abs cmp eq ne gt lt ge le
ceil floor
);
sub _type_inspector {
my ($me, $type) = @_;
if ($type==Num or $type==Defined) {
return {
trust_mutated => 'maybe',
value_type => $type,
};
}
return $me->SUPER::_type_inspector($type);
}
sub set {
handler
name => 'Number:set',
args => 1,
signature => [Num],
template => '« $ARG »',
lvalue_template => '$GET = $ARG',
usage => '$value',
documentation => "Sets the number to a new value.",
_examples => sub {
my ( $class, $attr, $method ) = @_;
return join "",
" my \$object = $class\->new( $attr => 4 );\n",
" \$object->$method\( 5 );\n",
" say \$object->$attr; ## ==> 5\n",
"\n";
},
}
sub get {
handler
name => 'Number:get',
args => 0,
template => '$GET',
documentation => "Returns the current value of the number.",
_examples => sub {
my ( $class, $attr, $method ) = @_;
return join "",
" my \$object = $class\->new( $attr => 4 );\n",
" say \$object->$method; ## ==> 4\n",
"\n";
},
}
sub add {
handler
name => 'Number:add',
args => 1,
signature => [Num],
template => '« $GET + $ARG »',
usage => '$addend',
documentation => "Adds a number to the existing number, updating the attribute.",
_examples => sub {
my ( $class, $attr, $method ) = @_;
return join "",
" my \$object = $class\->new( $attr => 4 );\n",
" \$object->$method( 5 );\n",
" say \$object->$attr; ## ==> 9\n",
"\n";
},
}
sub sub {
handler
name => 'Number:sub',
args => 1,
signature => [Num],
template => '« $GET - $ARG »',
usage => '$subtrahend',
documentation => "Subtracts a number from the existing number, updating the attribute.",
_examples => sub {
my ( $class, $attr, $method ) = @_;
return join "",
" my \$object = $class\->new( $attr => 9 );\n",
" \$object->$method( 6 );\n",
" say \$object->$attr; ## ==> 3\n",
"\n";
},
}
sub mul {
handler
name => 'Number:mul',
args => 1,
signature => [Num],
template => '« $GET * $ARG »',
usage => '$factor',
documentation => "Multiplies the existing number by a number, updating the attribute.",
_examples => sub {
my ( $class, $attr, $method ) = @_;
return join "",
" my \$object = $class\->new( $attr => 2 );\n",
" \$object->$method( 5 );\n",
" say \$object->$attr; ## ==> 10\n",
"\n";
},
}
sub div {
handler
name => 'Number:div',
args => 1,
signature => [Num],
template => '« $GET / $ARG »',
usage => '$divisor',
documentation => "Divides the existing number by a number, updating the attribute.",
_examples => sub {
my ( $class, $attr, $method ) = @_;
return join "",
" my \$object = $class\->new( $attr => 6 );\n",
" \$object->$method( 2 );\n",
" say \$object->$attr; ## ==> 3\n",
"\n";
},
}
sub mod {
handler
name => 'Number:mod',
args => 1,
signature => [Num],
template => '« $GET % $ARG »',
usage => '$divisor',
documentation => "Finds the current number modulo a divisor, updating the attribute.",
_examples => sub {
my ( $class, $attr, $method ) = @_;
return join "",
" my \$object = $class\->new( $attr => 5 );\n",
" \$object->$method( 2 );\n",
" say \$object->$attr; ## ==> 1\n",
"\n";
},
}
sub abs {
handler
name => 'Number:abs',
args => 0,
template => '« abs($GET) »',
additional_validation => 'no incoming values',
documentation => "Finds the absolute value of the current number, updating the attribute.",
_examples => sub {
my ( $class, $attr, $method ) = @_;
return join "",
" my \$object = $class\->new( $attr => -5 );\n",
" \$object->$method;\n",
" say \$object->$attr; ## ==> 5\n",
"\n";
},
}
for my $comparison ( qw/ cmp eq ne lt gt le ge / ) {
my $op = {
cmp => '<=>',
eq => '==',
ne => '!=',
lt => '<',
gt => '>',
le => '<=',
ge => '>=',
}->{$comparison};
no strict 'refs';
*$comparison = sub {
handler
name => "Number:$comparison",
args => 1,
signature => [Num],
usage => '$num',
template => "\$GET $op \$ARG",
documentation => "Returns C<< \$object->attr $op \$num >>.",
};
}
sub ceil {
handler
name => 'Number:ceil',
args => 0,
template => 'use POSIX (); « POSIX::ceil($GET) »',
additional_validation => 'no incoming values',
documentation => "Finds the ceiling of the current number, updating the attribute. Like C<ceil> from L<builtin>, but in-place.",
}
sub floor {
handler
name => 'Number:floor',
args => 0,
template => 'use POSIX (); « POSIX::floor($GET) »',
additional_validation => 'no incoming values',
documentation => "Finds the floor of the current number, updating the attribute. Like C<floor> from L<builtin>, but in-place.",
}
1;
|
