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williamc |
1.1 |
#
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# Block.pm
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#
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# Originally Written by Christopher Williams
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#
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# Description
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#
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# Interface
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# ---------
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# new(namestring) : A new Block object
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# parent([Block]) : Set/get the parent - no parent = undef
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# getobj(id) : get object associated with key - returns the nearest
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# match going up the block tree
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# setobj(oref,id) : hold an object reference with a key
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williamc |
1.2 |
# objectids() : return a list of all object ids
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williamc |
1.1 |
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package BuildSystem::Block;
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require 5.004;
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sub new {
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my $class=shift;
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my $self={};
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bless $self, $class;
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williamc |
1.2 |
$self->{objects}={};
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williamc |
1.1 |
return $self;
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}
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sub setobj {
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my $self=shift;
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my $oref=shift;
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my $key=shift;
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$self->{objects}{$key}=$oref;
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}
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sub getobj {
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my $self=shift;
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my $key=shift;
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my $oref=undef;
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if ( ! exists $self->{objects}{$key} ) {
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if ( defined $self->{parent} ) {
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$oref=$self->{parent}->getobj($key);
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}
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}
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else {
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$oref=$self->{objects}{$key};
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}
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return $oref;
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}
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williamc |
1.2 |
sub objectids {
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my $self=shift;
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# -- get all local objs
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my @objs=(keys %{$self->{objects}});
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if ( defined $self->{parent} ) {
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# -- add any objects from parent not found locally
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foreach $obj ( $self->{parent}->objectids() ) {
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my @tmp=grep ({ $_ eq $obj } @objs);
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if ( $#tmp < 0 ) {
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push @objs, $obj;
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}
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}
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}
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return @objs;
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}
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williamc |
1.1 |
sub parent {
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my $self=shift;
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if ( @_ ) {
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williamc |
1.2 |
$self->{parent}=shift;
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williamc |
1.1 |
}
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return (defined $self->{parent})?$self->{parent}:undef;
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}
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