TAP::Object - Base class that provides common functionality to all C<TAP::*> modules


Test-Harness documentation Contained in the Test-Harness distribution.

Index


Code Index:

NAME

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TAP::Object - Base class that provides common functionality to all TAP::* modules

VERSION

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Version 3.23

SYNOPSIS

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    package TAP::Whatever;

    use strict;
    use vars qw(@ISA);

    use TAP::Object;

    @ISA = qw(TAP::Object);

    # new() implementation by TAP::Object
    sub _initialize {
        my ( $self, @args) = @_;
        # initialize your object
        return $self;
    }

    # ... later ...
    my $obj = TAP::Whatever->new(@args);

DESCRIPTION

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TAP::Object provides a default constructor and exception model for all TAP::* classes. Exceptions are raised using Carp.

METHODS

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Class Methods

new

Create a new object. Any arguments passed to new will be passed on to the _initialize method. Returns a new object.

Instance Methods

_initialize

Initializes a new object. This method is a stub by default, you should override it as appropriate.

Note: new expects you to return $self or raise an exception. See _croak, and Carp.

_croak

Raise an exception using croak from Carp, eg:

    $self->_croak( 'why me?', 'aaarrgh!' );

May also be called as a class method.

    $class->_croak( 'this works too' );

_confess

Raise an exception using confess from Carp, eg:

    $self->_confess( 'why me?', 'aaarrgh!' );

May also be called as a class method.

    $class->_confess( 'this works too' );

_construct

Create a new instance of the specified class.

mk_methods

Create simple getter/setters.

 __PACKAGE__->mk_methods(@method_names);


Test-Harness documentation Contained in the Test-Harness distribution.
package TAP::Object;

use strict;
use vars qw($VERSION);

$VERSION = '3.23';

sub new {
    my $class = shift;
    my $self = bless {}, $class;
    return $self->_initialize(@_);
}

sub _initialize {
    return $_[0];
}

sub _croak {
    my $proto = shift;
    require Carp;
    Carp::croak(@_);
    return;
}

sub _confess {
    my $proto = shift;
    require Carp;
    Carp::confess(@_);
    return;
}

sub _construct {
    my ( $self, $class, @args ) = @_;

    $self->_croak("Bad module name $class")
      unless $class =~ /^ \w+ (?: :: \w+ ) *$/x;

    unless ( $class->can('new') ) {
        local $@;
        eval "require $class";
        $self->_croak("Can't load $class") if $@;
    }

    return $class->new(@args);
}

sub mk_methods {
    my ( $class, @methods ) = @_;
    for my $method_name (@methods) {
        my $method = "${class}::$method_name";
        no strict 'refs';
        *$method = sub {
            my $self = shift;
            $self->{$method_name} = shift if @_;
            return $self->{$method_name};
        };
    }
}

1;