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# Sub::Contract::Pool - The pool of contracts |
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# |
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# $Id: Pool.pm,v 1.15 2009/06/16 12:23:58 erwan_lemonnier Exp $ |
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# |
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package Sub::Contract::Pool; |
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3879
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use strict; |
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use warnings; |
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use Carp qw(croak); |
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1040
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use vars qw($AUTOLOAD); |
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1625
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use accessors qw( _contract_index |
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); |
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2049
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use base qw(Exporter); |
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22743
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our $VERSION = '0.12'; |
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our @EXPORT = (); |
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our @EXPORT_OK = ('get_contract_pool'); |
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#--------------------------------------------------------------- |
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# |
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# A singleton pattern with lazy initialization and embedded constructor |
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# |
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my $pool; |
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sub get_contract_pool { |
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if (!defined $pool) { |
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$pool = bless({},__PACKAGE__); |
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$pool->_contract_index({}); |
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} |
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return $pool; |
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} |
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#--------------------------------------------------------------- |
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# |
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# list_all_contracts - return all contracts registered in the pool |
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# |
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sub list_all_contracts { |
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my $self = shift; |
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return values %{$self->_contract_index}; |
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} |
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#--------------------------------------------------------------- |
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# |
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# has_contract - |
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# |
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# TODO: should it be removed? to use find_contract instead? would it be too slow? |
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sub has_contract { |
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my ($self, $contractor) = @_; |
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3753
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croak "method has_contract() expects a fully qualified function name as argument" |
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if ( scalar @_ != 2 || |
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!defined $contractor || |
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ref $contractor ne '' || |
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$contractor !~ /::/ |
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); |
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my $index = $self->_contract_index; |
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1574
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return exists $index->{$contractor}; |
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} |
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#--------------------------------------------------------------- |
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# |
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# _add_contract |
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# |
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sub _add_contract { |
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my ($self, $contract) = @_; |
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croak "method add_contract() expects only 1 argument" |
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if (scalar @_ != 2); |
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croak "method add_contract() expects an instance of Sub::contract as argument" |
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if (!defined $contract || ref $contract ne 'Sub::Contract'); |
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my $index = $self->_contract_index; |
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my $contractor = $contract->contractor; |
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croak "trying to contract function [$contractor] twice" |
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if ($self->has_contract($contractor)); |
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$index->{$contractor} = $contract; |
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return $self; |
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} |
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################################################################ |
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# |
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# |
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# Operations on contracts during runtime |
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# |
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# |
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################################################################ |
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sub enable_all_contracts { |
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1
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1
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my $self = shift; |
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1
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map { $_->enable } $self->list_all_contracts; |
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106
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} |
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sub disable_all_contracts { |
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my $self = shift; |
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map { $_->disable } $self->list_all_contracts; |
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111
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} |
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113
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sub enable_contracts_matching { |
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0
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0
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1
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my $self = shift; |
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0
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map { $_->enable } $self->find_contracts_matching(@_); |
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} |
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118
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sub disable_contracts_matching { |
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0
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1
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my $self = shift; |
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0
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map { $_->disable } $self->find_contracts_matching(@_); |
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} |
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123
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sub find_contract { |
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1
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2830
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my ($self, $contractor) = @_; |
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100
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1211
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croak "method find_contract() expects a fully qualified function name as argument" |
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127
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if ( scalar @_ != 2 || |
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!defined $contractor || |
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ref $contractor ne '' || |
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$contractor !~ /::/ |
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); |
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164
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my $index = $self->_contract_index; |
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return $index->{$contractor}; |
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} |
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137
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sub find_contracts_matching { |
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10
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10
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1
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5050
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my $self = shift; |
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10
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my $match = shift; |
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my @contracts; |
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142
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# TODO: fix croak level when called from enable/disable_matching |
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# local $Carp::CarpLevel = 2 if ((caller(1))[3] =~ /^Sub::Contract::Pool::(enable|disable)_contracts_matching$/); |
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croak "method find_contracts_matching() expects a regular expression" |
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146
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if (scalar @_ != 0 || !defined $match || ref $match ne ''); |
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while ( my ($name,$contract) = each %{$self->_contract_index} ) { |
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126
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149
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40
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553
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push @contracts, $contract if ($name =~ /^$match$/); |
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} |
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152
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10
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176
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return @contracts; |
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} |
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155
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1; |
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__END__ |