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package Device::Firmata::Base; |
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use strict 'vars', 'subs'; |
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use warnings; |
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use vars qw/ |
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$AUTOLOAD |
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$FIRMATA_DEBUG_LEVEL |
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$FIRMATA_ERROR_CLASS |
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$FIRMATA_ERROR |
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$FIRMATA_ATTRIBS |
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$FIRMATA_DEBUGGING |
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$FIRMATA_LOCALE |
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$FIRMATA_LOCALE_PATH |
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$FIRMATA_LOCALE_MESSAGES |
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/; |
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=head1 NAME |
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Device::Firmata::Base -- Abstract baseclass for Device::Firmata modules |
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=cut |
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$FIRMATA_DEBUGGING = 1; |
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$FIRMATA_ATTRIBS = {}; |
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$FIRMATA_LOCALE = 'en'; |
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$FIRMATA_LOCALE_PATH = '.'; |
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$FIRMATA_DEBUG_LEVEL = 0; |
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$FIRMATA_ERROR_CLASS = 'Device::Firmata::Error'; |
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=head1 METHODS |
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=head2 import |
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Ease setting of configuration options |
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=cut |
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sub import { |
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my $self = shift; |
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my $pkg = caller; |
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my $config_opts = { |
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debugging => $FIRMATA_DEBUGGING, |
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}; |
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if ( @_ ) { |
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my $opts = $self->parameters( @_ ); |
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1
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if ( my $attrs = $opts->{FIRMATA_ATTRIBS} ) { |
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*{$pkg.'::FIRMATA_ATTRIBS'} = \$attrs; |
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} |
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unless ( ref *{$pkg.'::ISA'} eq 'ARRAY' and @${$pkg.'::ISA'}) { |
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my @ISA = ref $opts->{ISA} ? @{$opts->{ISA}} : |
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$opts->{ISA} ? $opts->{ISA} : |
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__PACKAGE__; |
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*{$pkg.'::ISA'} = \@ISA; |
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} |
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use strict; |
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1781
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$self->SUPER::import( @_ ); |
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} |
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} |
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=head2 new |
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=cut |
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66
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sub new { |
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my $pkg = shift; |
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my $basis = copy_struct( $pkg->init_class_attribs ); |
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my $self = bless $basis, $pkg; |
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@_ = $self->pre_init( @_ ) if $self->{_biofunc_pre_init}; |
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if ( $self->{_biofunc_init} ) { |
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$self->init( @_ ); |
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} |
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else { |
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$self->init_instance_attribs( @_ ); |
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} |
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return $self->post_init if $self->{_biofunc_post_init}; |
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return $self; |
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} |
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84
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=head2 create |
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86
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A soft new as some objects will override new and |
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we don't want to cause problems but still want |
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to invoice our creation code |
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90
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=cut |
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92
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sub create { |
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1
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my $self = shift; |
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my $basis = copy_struct( $self->init_class_attribs ); |
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@$self{ keys %$basis } = values %$basis; |
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@_ = $self->pre_init( @_ ) if $self->{_biofunc_pre_init}; |
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if ( $self->{_biofunc_init} ) { |
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$self->init( @_ ); |
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} |
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else { |
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$self->init_instance_attribs( @_ ); |
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} |
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107
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return $self->post_init if $self->{_biofunc_post_init}; |
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return $self; |
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} |
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111
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=head2 init_instance_attribs |
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113
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=cut |
114
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115
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sub init_instance_attribs { |
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# -------------------------------------------------- |
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my $self = shift; |
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my $opts = $self->parameters( @_ ); |
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120
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foreach my $k ( keys %$self ) { |
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next unless exists $opts->{$k}; |
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next if $k =~ /^_biofunc/; |
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$self->{$k} = $opts->{$k}; |
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} |
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0
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return $self; |
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} |
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129
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=head2 init_class_attribs |
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131
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=cut |
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133
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sub init_class_attribs { |
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# -------------------------------------------------- |
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0
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my $class = ref $_[0] || shift; |
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my $track = { $class => 1, @_ ? %{$_[0]} : () }; |
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137
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138
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return ${"${class}::ABSOLUTE_ATTRIBS"} if ${"${class}::ABSOLUTE_ATTRIBS"}; |
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139
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140
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my $u = ${"${class}::FIRMATA_ATTRIBS"} || {}; |
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142
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for my $c ( @{"${class}::ISA"} ) { |
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143
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next unless ${"${c}::FIRMATA_ATTRIBS"}; |
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144
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145
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my $h; |
146
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0
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if ( ${"${c}::ABSOLUTE_ATTRIBS"} ) { |
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147
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$h = ${"${c}::ABSOLUTE_ATTRIBS"}; |
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0
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148
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} |
149
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else { |
150
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0
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$c->fatal( "Cyclic dependancy!" ) if $track->{$c}; |
151
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$h = $c->init_class_attribs( $c, $track ); |
152
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} |
153
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154
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0
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foreach my $k ( keys %$h ) { |
155
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next if exists $u->{$k}; |
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$u->{$k} = copy_struct( $h->{$k} ); |
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} |
158
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} |
159
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160
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0
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foreach my $f ( qw( pre_init init post_init ) ) { |
161
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0
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0
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$u->{"_biofunc_" . $f} = $class->can( $f ) ? 1 : 0; |
162
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} |
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164
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0
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${"${class}::ABSOLUTE_ATTRIBS"} = $u; |
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165
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166
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0
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return $u; |
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} |
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169
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# logging/exception functions |
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171
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172
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173
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# Utilty functions |
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175
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=head2 parameters |
176
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177
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=cut |
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179
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sub parameters { |
180
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# -------------------------------------------------- |
181
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1
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50
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1
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1
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3
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return {} unless @_ > 1; |
182
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183
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1
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50
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4
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if ( @_ == 2 ) { |
184
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0
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0
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0
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return $_[1] if ref $_[1]; |
185
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0
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0
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return; # something wierd happened |
186
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} |
187
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188
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1
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6
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@_ % 2 or $_[0]->warn( "Even number of elements were not passed to call.", join( " ", caller() ) ); |
189
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190
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1
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3
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shift; |
191
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192
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1
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3
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return {@_}; |
193
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} |
194
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195
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=head2 copy_struct |
196
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197
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=cut |
198
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199
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sub copy_struct { |
200
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# -------------------------------------------------- |
201
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0
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0
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1
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my $s = shift; |
202
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203
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0
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0
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if ( ref $s ) { |
204
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0
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0
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if ( UNIVERSAL::isa( $s, 'HASH' ) ) { |
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0
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205
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return { |
206
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0
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map { my $v = $s->{$_}; ( |
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0
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207
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0
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0
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$_ => ref $v ? copy_struct( $v ) : $v |
208
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)} keys %$s |
209
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}; |
210
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} |
211
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elsif ( UNIVERSAL::isa( $s, 'ARRAY' ) ) { |
212
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return [ |
213
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0
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0
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map { ref $_ ? copy_struct($_) : $_ } @$s |
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0
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214
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]; |
215
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} |
216
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0
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die "Cannot copy struct! : ".ref($s); |
217
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} |
218
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219
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0
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return $s; |
220
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} |
221
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222
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=head2 locale |
223
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224
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=cut |
225
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226
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sub locale { |
227
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# -------------------------------------------------- |
228
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0
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0
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0
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1
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@_ >= 2 and shift; |
229
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0
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$FIRMATA_LOCALE = shift; |
230
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} |
231
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232
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=head2 locale_path |
233
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234
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=cut |
235
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236
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sub locale_path { |
237
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# -------------------------------------------------- |
238
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0
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0
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0
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1
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@_ >= 2 and shift; |
239
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0
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$FIRMATA_LOCALE_PATH = shift; |
240
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} |
241
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242
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=head2 language |
243
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244
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=cut |
245
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246
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sub language { |
247
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# -------------------------------------------------- |
248
|
0
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0
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1
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|
my $self = shift; |
249
|
0
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|
require Device::Firmata::Language; |
250
|
0
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|
return Device::Firmata::Language->language(@_); |
251
|
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} |
252
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253
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|
=head2 error |
254
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255
|
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|
=cut |
256
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257
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|
sub error { |
258
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|
# -------------------------------------------------- |
259
|
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# Handle any error messages |
260
|
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|
# |
261
|
0
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0
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1
|
|
my $self = shift; |
262
|
0
|
0
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|
|
if ( @_ ) { |
263
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0
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|
|
my $err_msg = $self->init_error->error(@_); |
264
|
0
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|
|
$self->{error} = $err_msg; |
265
|
0
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|
|
|
|
|
return; |
266
|
|
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|
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|
|
} |
267
|
|
|
|
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|
|
|
268
|
0
|
|
|
|
|
|
my $err_msg = $self->{error}; |
269
|
0
|
|
|
|
|
|
$self->{error} = ''; |
270
|
0
|
|
|
|
|
|
return $err_msg; |
271
|
|
|
|
|
|
|
} |
272
|
|
|
|
|
|
|
|
273
|
|
|
|
|
|
|
=head2 init_error |
274
|
|
|
|
|
|
|
|
275
|
|
|
|
|
|
|
Creates the global error object that will collect |
276
|
|
|
|
|
|
|
all error messages generated on the system. This |
277
|
|
|
|
|
|
|
function can be called as many times as desired. |
278
|
|
|
|
|
|
|
|
279
|
|
|
|
|
|
|
=cut |
280
|
|
|
|
|
|
|
|
281
|
|
|
|
|
|
|
sub init_error { |
282
|
|
|
|
|
|
|
# -------------------------------------------------- |
283
|
|
|
|
|
|
|
# |
284
|
0
|
0
|
|
0
|
1
|
|
$FIRMATA_ERROR and return $FIRMATA_ERROR; |
285
|
|
|
|
|
|
|
|
286
|
0
|
0
|
|
|
|
|
if ( $FIRMATA_ERROR_CLASS eq 'Device::Firmata::Error' ) { |
287
|
0
|
|
|
|
|
|
require Device::Firmata::Error; |
288
|
0
|
|
|
|
|
|
return $FIRMATA_ERROR = $FIRMATA_ERROR_CLASS; |
289
|
|
|
|
|
|
|
} |
290
|
|
|
|
|
|
|
|
291
|
|
|
|
|
|
|
# Try and load the file. Use default if fails |
292
|
0
|
|
|
|
|
|
eval "require $FIRMATA_ERROR_CLASS"; |
293
|
0
|
0
|
|
|
|
|
$@ and return $FIRMATA_ERROR = $FIRMATA_ERROR_CLASS; |
294
|
|
|
|
|
|
|
|
295
|
|
|
|
|
|
|
# Try and init the error object. Use default if fails |
296
|
0
|
|
|
|
|
|
eval { $FIRMATA_ERROR = $FIRMATA_ERROR_CLASS->new(); }; |
|
0
|
|
|
|
|
|
|
297
|
0
|
0
|
|
|
|
|
$@ and return $FIRMATA_ERROR = $FIRMATA_ERROR_CLASS; |
298
|
0
|
|
|
|
|
|
return $FIRMATA_ERROR; |
299
|
|
|
|
|
|
|
} |
300
|
|
|
|
|
|
|
|
301
|
|
|
|
|
|
|
=head2 fatal |
302
|
|
|
|
|
|
|
|
303
|
|
|
|
|
|
|
Handle tragic and unrecoverable messages |
304
|
|
|
|
|
|
|
|
305
|
|
|
|
|
|
|
=cut |
306
|
|
|
|
|
|
|
|
307
|
|
|
|
|
|
|
sub fatal { |
308
|
|
|
|
|
|
|
# -------------------------------------------------- |
309
|
|
|
|
|
|
|
# |
310
|
0
|
|
|
0
|
1
|
|
my $self = shift; |
311
|
0
|
|
|
|
|
|
return $self->error( -1, @_ ); |
312
|
|
|
|
|
|
|
} |
313
|
|
|
|
|
|
|
|
314
|
|
|
|
|
|
|
=head2 warn |
315
|
|
|
|
|
|
|
|
316
|
|
|
|
|
|
|
Handle tragic and unrecoverable messages |
317
|
|
|
|
|
|
|
|
318
|
|
|
|
|
|
|
=cut |
319
|
|
|
|
|
|
|
|
320
|
|
|
|
|
|
|
sub warn { |
321
|
|
|
|
|
|
|
# -------------------------------------------------- |
322
|
|
|
|
|
|
|
# |
323
|
0
|
|
|
0
|
1
|
|
my $self = shift; |
324
|
0
|
|
|
|
|
|
return $self->error( 0, @_ ); |
325
|
|
|
|
|
|
|
} |
326
|
|
|
|
|
|
|
|
327
|
|
|
|
|
|
|
=head2 debug |
328
|
|
|
|
|
|
|
|
329
|
|
|
|
|
|
|
=cut |
330
|
|
|
|
|
|
|
|
331
|
|
|
|
|
|
|
sub debug { |
332
|
|
|
|
|
|
|
# -------------------------------------------------- |
333
|
0
|
|
|
0
|
1
|
|
my ( $self, $debug ) = @_; |
334
|
0
|
|
|
|
|
|
$FIRMATA_DEBUG_LEVEL = $debug; |
335
|
|
|
|
|
|
|
} |
336
|
|
|
|
|
|
|
|
337
|
|
|
|
|
|
|
=head2 DESTROY |
338
|
|
|
|
|
|
|
|
339
|
|
|
|
|
|
|
=cut |
340
|
|
|
|
|
|
|
|
341
|
|
|
|
|
|
|
sub DESTROY { |
342
|
|
|
|
|
|
|
# -------------------------------------------------- |
343
|
0
|
|
|
0
|
|
|
my $self = shift; |
344
|
|
|
|
|
|
|
} |
345
|
|
|
|
|
|
|
|
346
|
|
|
|
|
|
|
=head2 AUTOLOAD |
347
|
|
|
|
|
|
|
|
348
|
|
|
|
|
|
|
=cut |
349
|
|
|
|
|
|
|
|
350
|
|
|
|
|
|
|
sub AUTOLOAD { |
351
|
|
|
|
|
|
|
# -------------------------------------------------- |
352
|
0
|
|
|
0
|
|
|
my $self = shift; |
353
|
0
|
|
|
|
|
|
my ($attrib) = $AUTOLOAD =~ /::([^:]+)$/; |
354
|
|
|
|
|
|
|
|
355
|
0
|
0
|
0
|
|
|
|
if ( $self and UNIVERSAL::isa( $self, 'Device::Firmata::Base' ) ) { |
356
|
0
|
|
|
|
|
|
$self->error( FIRMATA__unhandled => $attrib, join( " ", caller() ) ); |
357
|
0
|
|
|
|
|
|
die $self->error; |
358
|
|
|
|
|
|
|
} |
359
|
|
|
|
|
|
|
else { |
360
|
0
|
|
|
|
|
|
die "Tried to call function '$attrib' via object '$self' @ ", join( " ", caller(1) ), "\n"; |
361
|
|
|
|
|
|
|
} |
362
|
|
|
|
|
|
|
|
363
|
|
|
|
|
|
|
} |
364
|
|
|
|
|
|
|
|
365
|
|
|
|
|
|
|
#################################################### |
366
|
|
|
|
|
|
|
# Object instantiation code |
367
|
|
|
|
|
|
|
#################################################### |
368
|
|
|
|
|
|
|
|
369
|
|
|
|
|
|
|
=head2 object_load |
370
|
|
|
|
|
|
|
|
371
|
|
|
|
|
|
|
Load the appropriate package and attempt to initialize |
372
|
|
|
|
|
|
|
the object as well |
373
|
|
|
|
|
|
|
|
374
|
|
|
|
|
|
|
=cut |
375
|
|
|
|
|
|
|
|
376
|
|
|
|
|
|
|
sub object_load { |
377
|
|
|
|
|
|
|
# -------------------------------------------------- |
378
|
0
|
|
|
0
|
1
|
|
my $self = shift; |
379
|
0
|
|
|
|
|
|
my $object_class = shift; |
380
|
0
|
0
|
|
|
|
|
return unless $object_class =~ /^\w+(?:::\w+)*$/; # TODO ERROR MESSAGE |
381
|
0
|
0
|
|
|
|
|
eval "require $object_class; 1" or die $@; |
382
|
0
|
|
|
|
|
|
my $object = $object_class->new(@_); |
383
|
0
|
|
|
|
|
|
return $object; |
384
|
|
|
|
|
|
|
} |
385
|
|
|
|
|
|
|
|
386
|
|
|
|
|
|
|
|
387
|
|
|
|
|
|
|
1; |