4 use vars qw($VERSION @ISA);
8 @ISA = qw(TAP::Object);
12 TAP::Base - Base class that provides common functionality to L<TAP::Parser>
23 use constant GOT_TIME_HIRES => do {
24 eval 'use Time::HiRes qw(time);';
30 package TAP::Whatever;
34 use vars qw($VERSION @ISA);
39 my $thing = TAP::Whatever->new();
41 $thing->callback( event => sub {
42 # do something interesting
47 C<TAP::Base> provides callback management.
56 my ( $self, $arg_for, $ok_callback ) = @_;
58 my %ok_map = map { $_ => 1 } @$ok_callback;
60 $self->{ok_callbacks} = \%ok_map;
62 if ( my $cb = delete $arg_for->{callbacks} ) {
63 while ( my ( $event, $callback ) = each %$cb ) {
64 $self->callback( $event, $callback );
73 Install a callback for a named event.
78 my ( $self, $event, $callback ) = @_;
80 my %ok_map = %{ $self->{ok_callbacks} };
82 $self->_croak('No callbacks may be installed')
85 $self->_croak( "Callback $event is not supported. Valid callbacks are "
86 . join( ', ', sort keys %ok_map ) )
87 unless exists $ok_map{$event};
89 push @{ $self->{code_for}{$event} }, $callback;
96 return keys %{ $self->{code_for} } != 0;
100 my ( $self, $event ) = @_;
101 return $self->{code_for}{$event};
108 my $cb = $self->_callback_for($event);
109 return unless defined $cb;
110 return map { $_->(@_) } @$cb;
115 Return the current time using Time::HiRes if available.
119 sub get_time { return time() }
121 =head3 C<time_is_hires>
123 Return true if the time returned by get_time is high resolution (i.e. if Time::HiRes is available).
127 sub time_is_hires { return GOT_TIME_HIRES }