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package Devel::REPL::Plugin::FancyPrompt;
use Devel::REPL::Plugin;
use namespace::clean -except => [ 'meta' ];
has 'fancy_prompt' => (
is => 'rw', lazy => 1,
# yes, this needs to be a double sub
default => sub {
sub {
my $self = shift;
sprintf 're.pl(%s):%03d%s> ',
$self->can('current_package') ? $self->current_package : 'main',
$self->lines_read,
$self->can('line_depth') ? ':' . $self->line_depth : '';
}
},
);
has 'fancy_continuation_prompt' => (
is => 'rw', lazy => 1,
# yes, this needs to be a double sub
default => sub {
sub {
my $self = shift;
sprintf 're.pl(%s):%03d:%d* ',
$self->can('current_package') ? $self->current_package : 'main',
$self->lines_read,
$self->line_depth,
}
},
);
has 'lines_read' => (
is => 'rw', lazy => 1, default => 0,
);
around 'prompt' => sub {
shift;
my $self = shift;
if ($self->can('line_depth') && $self->line_depth) {
return $self->fancy_continuation_prompt->($self);
}
else {
return $self->fancy_prompt->($self);
}
};
before 'read' => sub {
my $self = shift;
$self->lines_read($self->lines_read + 1);
};
1;
__END__
=head1 NAME
Devel::REPL::Plugin::FancyPrompt - facilitate user-defined prompts
=head1 SYNOPSIS
#!/usr/bin/perl
use lib './lib';
use Devel::REPL;
my $repl = Devel::REPL->new;
$repl->load_plugin('MultiLine::PPI'); # for indent depth
$repl->load_plugin('Packages'); # for current package
$repl->load_plugin('FancyPrompt');
$repl->run;
=head1 DESCRIPTION
FancyPrompt helps you write your own prompts. The default fancy prompt resembles
C<irb>'s default prompt. The default C<fancy_prompt> looks like this:
re.pl(main):001:0> 2 + 2
4
C<re.pl> is a constant. C<main> is the current package. The first number is how
many lines have been read so far. The second number (only if you have a
C<MultiLine> plugin) is how deep you are; intuitively, your indent level. This
default can be implemented with:
$_REPL->fancy_prompt(sub {
my $self = shift;
sprintf 're.pl(%s):%03d%s> ',
$self->can('current_package') ? $self->current_package : 'main',
$self->lines_read,
$self->can('line_depth') ? ':' . $self->line_depth : '';
});
C<current_package> is provided by L<Devel::REPL::Plugin::Packages> (which
tracks the current package). C<line_depth> is provided by a C<MultiLine> plugin
(probably C<MultiLine::PPI>).
You may also set a C<fancy_continuation_prompt>. The default is very similar to
C<fancy_prompt>'s default (except C<*> instead of C<< > >>).
=head1 SEE ALSO
C<Devel::REPL>
=head1 AUTHOR
Shawn M Moore, C<< <sartak at gmail dot com> >>
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2007 by Shawn M Moore
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
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