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1 | package MooseX::AttributeHelpers::Number; |
2 | use Moose; |
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3 | |
4 | our $VERSION = '0.01'; |
5 | our $AUTHORITY = 'cpan:STEVAN'; |
6 | |
7 | extends 'MooseX::AttributeHelpers::Base'; |
8 | |
9 | sub helper_type { 'Num' } |
10 | |
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11 | # NOTE: |
12 | # we don't use the method provider for this |
13 | # module since many of the names of the provied |
14 | # methods would conflict with keywords |
15 | # - SL |
16 | |
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17 | has '+method_constructors' => ( |
18 | default => sub { |
19 | return +{ |
20 | set => sub { |
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21 | my ($attr, $reader, $writer) = @_; |
22 | return sub { $writer->($_[0], $_[1]) }; |
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23 | }, |
24 | add => sub { |
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25 | my ($attr, $reader, $writer) = @_; |
26 | return sub { $writer->($_[0], $reader->($_[0]) + $_[1]) }; |
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27 | }, |
28 | sub => sub { |
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29 | my ($attr, $reader, $writer) = @_; |
30 | return sub { $writer->($_[0], $reader->($_[0]) - $_[1]) }; |
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31 | }, |
32 | mul => sub { |
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33 | my ($attr, $reader, $writer) = @_; |
34 | return sub { $writer->($_[0], $reader->($_[0]) * $_[1]) }; |
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35 | }, |
36 | div => sub { |
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37 | my ($attr, $reader, $writer) = @_; |
38 | return sub { $writer->($_[0], $reader->($_[0]) / $_[1]) }; |
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39 | }, |
40 | mod => sub { |
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41 | my ($attr, $reader, $writer) = @_; |
42 | return sub { $writer->($_[0], $reader->($_[0]) % $_[1]) }; |
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43 | }, |
44 | abs => sub { |
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45 | my ($attr, $reader, $writer) = @_; |
46 | return sub { $writer->($_[0], abs($reader->($_[0])) ) }; |
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47 | }, |
48 | } |
49 | } |
50 | ); |
51 | |
52 | no Moose; |
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53 | |
54 | # register the alias ... |
55 | package Moose::Meta::Attribute::Custom::Number; |
56 | sub register_implementation { 'MooseX::AttributeHelpers::Number' } |
57 | |
58 | 1; |
59 | |
60 | =pod |
61 | |
62 | =head1 NAME |
63 | |
64 | MooseX::AttributeHelpers::Number |
65 | |
66 | =head1 SYNOPSIS |
67 | |
68 | package Real; |
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69 | use Moose; |
70 | use MooseX::AttributeHelpers; |
71 | |
72 | has 'integer' => ( |
73 | metaclass => 'Number', |
74 | is => 'ro', |
75 | isa => 'Int', |
76 | default => sub { 5 }, |
77 | provides => { |
78 | set => 'set', |
79 | add => 'add', |
80 | sub => 'sub', |
81 | mul => 'mul', |
82 | div => 'div', |
83 | mod => 'mod', |
84 | abs => 'abs', |
85 | } |
86 | ); |
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87 | |
88 | my $real = Real->new(); |
89 | $real->add(5); # same as $real->integer($real->integer + 5); |
90 | $real->sub(2); # same as $real->integer($real->integer - 2); |
91 | |
92 | =head1 DESCRIPTION |
93 | |
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94 | This provides a simple numeric attribute, which supports most of the |
95 | basic math operations. |
96 | |
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97 | =head1 METHODS |
98 | |
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99 | =over 4 |
100 | |
101 | =item B<helper_type> |
102 | |
103 | =item B<method_constructors> |
104 | |
105 | =back |
106 | |
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107 | =head1 BUGS |
108 | |
109 | All complex software has bugs lurking in it, and this module is no |
110 | exception. If you find a bug please either email me, or add the bug |
111 | to cpan-RT. |
112 | |
113 | =head1 AUTHOR |
114 | |
8c651099 |
115 | Robert Boone |
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116 | |
117 | =head1 COPYRIGHT AND LICENSE |
118 | |
119 | Copyright 2007 by Infinity Interactive, Inc. |
120 | |
121 | L<http://www.iinteractive.com> |
122 | |
123 | This library is free software; you can redistribute it and/or modify |
124 | it under the same terms as Perl itself. |
125 | |
ae2c330e |
126 | =cut |