comparison variant_effect_predictor/Bio/EnsEMBL/Utils/BitString.pm @ 0:1f6dce3d34e0

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author mahtabm
date Thu, 11 Apr 2013 02:01:53 -0400
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1 =head1 LICENSE
2
3 Copyright (c) 1999-2012 The European Bioinformatics Institute and
4 Genome Research Limited. All rights reserved.
5
6 This software is distributed under a modified Apache license.
7 For license details, please see
8
9 http://www.ensembl.org/info/about/code_licence.html
10
11 =head1 CONTACT
12
13 Please email comments or questions to the public Ensembl
14 developers list at <dev@ensembl.org>.
15
16 Questions may also be sent to the Ensembl help desk at
17 <helpdesk@ensembl.org>.
18
19 =cut
20
21 =head1 NAME
22
23 Bio::EnsEMBL::Utils::BitString - bitstring object implementation
24
25 =head1 DESCRIPTION
26
27 This is an implementation of a bitstring object, taken from Damian
28 Convey's book "Object Oriented Perl".
29
30 =head1 METHODS
31
32 =cut
33
34
35 package Bio::EnsEMBL::Utils::BitString;
36
37 use strict;
38 use warnings;
39 no warnings 'uninitialized';
40
41
42 sub new {
43 my $class = ref($_[0])||$_[0];
44 my $initbits = join '', map {$_?1:0} @_[1..$#_];
45 my $bs = pack 'b*', $initbits;
46 bless \$bs, $class;
47 }
48
49
50 sub get {
51 my ($self, $bitnum) = @_;
52 return vec($$self,$bitnum,1);
53 }
54
55
56 sub set {
57 my ($self, $bitnum, $newval) = @_;
58 vec($$self,$bitnum,1) = $newval?1:0;
59 }
60
61
62 sub bitcount {
63 8 * length ${$_[0]};
64 }
65
66
67 sub complement {
68 my ($self) = @_;
69 my $complement = ~$$self;
70 bless \$complement, ref($self);
71 }
72
73
74 sub print_me {
75 my ($self) = @_;
76 for (my $i=0; $i < $self->bitcount(); $i++)
77 {
78 print $self->get($i);
79 print ' ' unless ($i+1)%8;
80 print "\n" unless ($i+1)%64;
81 }
82 print "\n";
83 }
84
85
86 1;
87