8 TAP::Base - Base class that provides common functionality to L<TAP::Parser> and L<TAP::Harness>
21 eval 'use Time::HiRes qw(time);';
22 $GOT_TIME_HIRES = $@ ? 0 : 1;
27 package TAP::Whatever;
31 use vars qw($VERSION @ISA);
36 my $thing = TAP::Whatever->new();
38 $thing->callback( event => sub {
39 # do something interesting
44 C<TAP::Base> provides callback management.
55 my ( $class, $arg_for ) = @_;
57 my $self = bless {}, $class;
58 return $self->_initialize($arg_for);
62 my ( $self, $arg_for, $ok_callback ) = @_;
64 my %ok_map = map { $_ => 1 } @$ok_callback;
66 $self->{ok_callbacks} = \%ok_map;
68 if ( my $cb = delete $arg_for->{callbacks} ) {
69 while ( my ( $event, $callback ) = each %$cb ) {
70 $self->callback( $event, $callback );
79 Install a callback for a named event.
84 my ( $self, $event, $callback ) = @_;
86 my %ok_map = %{ $self->{ok_callbacks} };
88 $self->_croak('No callbacks may be installed')
91 $self->_croak( "Callback $event is not supported. Valid callbacks are "
92 . join( ', ', sort keys %ok_map ) )
93 unless exists $ok_map{$event};
95 push @{ $self->{code_for}{$event} }, $callback;
102 return keys %{ $self->{code_for} } != 0;
106 my ( $self, $event ) = @_;
107 return $self->{code_for}{$event};
114 my $cb = $self->_callback_for($event);
115 return unless defined $cb;
116 return map { $_->(@_) } @$cb;
120 my ( $self, $message ) = @_;
122 Carp::croak($message);
129 Return the current time using Time::HiRes if available.
133 sub get_time { return time() }
135 =head3 C<time_is_hires>
137 Return true if the time returned by get_time is high resolution (i.e. if Time::HiRes is available).
141 sub time_is_hires { return $GOT_TIME_HIRES }