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annotate lib/IMPL/Debug.pm @ 422:b0481c071bea ref20150831

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IMPL::Config::Container tests, YAMLConfiguration now works and tested
author cin
date Sun, 20 Aug 2017 00:20:41 +0300
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422
b0481c071bea IMPL::Config::Container tests, YAMLConfiguration now works and tested
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1 package IMPL::Debug;
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2 use strict;
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3 use warnings;
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4
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5 our $ENABLE = 0;
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6 our %ENABLE;
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7
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8 my %subscriptions;
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9 my @subscriptions;
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10
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11 sub stub { }
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12
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13 sub import {
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14 my ( $self, @args ) = @_;
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15
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16 my $caller = caller;
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17 no strict 'refs';
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18
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19 my $enabled = exists $ENABLE{$caller} ? $ENABLE{$caller} : $ENABLE;
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20
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21 *{"${caller}::dbg_log"} = $enabled
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22 ? sub {
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23 $self->log( $caller, @_ );
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24 }
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25 : \&stub;
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26
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27 *{"${caller}::dbg_error"} = $enabled
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28 ? sub {
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29 $self->log( $caller, @_ );
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30 }
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31 : \&stub;
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32
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33 *{"${caller}::dbg_warn"} = $enabled
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34 ? sub {
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35 $self->log( $caller, @_ );
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36 }
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37 : \&stub;
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38 }
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39
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40 sub log {
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41 my $self = shift;
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42 my $channel = shift;
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43 $_->(@_) foreach @{ $subscriptions{$channel} || [] };
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44 $_->(@_) foreach @subscriptions;
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45 }
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46
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47 sub subscribe {
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48 my ( $self, $channel, $callback ) = @_;
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49
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50 if ( @_ == 2 ) {
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51 $callback = $channel;
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52 $channel = undef;
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53 }
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54
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55 die IMPL::InvalidArgumentException->new('callback')
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56 unless ref $callback eq 'CODE';
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57
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58 if ($channel) {
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59 push @{ $subscriptions{$channel} }, $callback;
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60 }
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61 else {
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62 push @subscriptions, $callback;
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63 }
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64 }
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65
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66 1;