/usr/lib/perl5/Template/Plugin/Scalar.pm is in libtemplate-perl 2.24-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | #============================================================= -*-Perl-*-
#
# Template::Plugin::Scalar
#
# DESCRIPTION
# Template Toolkit plugin module which allows you to call object methods
# in scalar context.
#
# AUTHOR
# Andy Wardley <abw@wardley.org>
#
# COPYRIGHT
# Copyright (C) 2008 Andy Wardley. All Rights Reserved.
#
# This module is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
#
#============================================================================
package Template::Plugin::Scalar;
use base 'Template::Plugin';
use strict;
use warnings;
use Template::Exception;
use Scalar::Util qw();
our $VERSION = 1.00;
our $MONAD = 'Template::Monad::Scalar';
our $EXCEPTION = 'Template::Exception';
our $AUTOLOAD;
sub load {
my $class = shift;
my $context = shift;
# define .scalar vmethods for hash and list objects
$context->define_vmethod( hash => scalar => \&scalar_monad );
$context->define_vmethod( list => scalar => \&scalar_monad );
return $class;
}
sub scalar_monad {
# create a .scalar monad which wraps the hash- or list-based object
# and delegates any method calls back to it, calling them in scalar
# context, e.g. foo.scalar.bar becomes $MONAD->new($foo)->bar and
# the monad calls $foo->bar in scalar context
$MONAD->new(shift);
}
sub new {
my ($class, $context, @args) = @_;
# create a scalar plugin object which will lookup a variable subroutine
# and call it. e.g. scalar.foo results in a call to foo() in scalar context
my $self = bless {
_CONTEXT => $context,
}, $class;
return $self;
}
sub AUTOLOAD {
my $self = shift;
my $item = $AUTOLOAD;
$item =~ s/.*:://;
return if $item eq 'DESTROY';
# lookup the named values
my $stash = $self->{ _CONTEXT }->stash;
my $value = $stash->{ $item };
if (! defined $value) {
die $EXCEPTION->new( scalar => "undefined value for scalar call: $item" );
}
elsif (ref $value eq 'CODE') {
$value = $value->(@_);
}
return $value;
}
package Template::Monad::Scalar;
our $EXCEPTION = 'Template::Exception';
our $AUTOLOAD;
sub new {
my ($class, $this) = @_;
bless \$this, $class;
}
sub AUTOLOAD {
my $self = shift;
my $this = $$self;
my $item = $AUTOLOAD;
$item =~ s/.*:://;
return if $item eq 'DESTROY';
my $method;
if (Scalar::Util::blessed($this)) {
# lookup the method...
$method = $this->can($item);
}
else {
die $EXCEPTION->new( scalar => "invalid object method: $item" );
}
# ...and call it in scalar context
my $result = $method->($this, @_);
return $result;
}
1;
__END__
=head1 NAME
Template::Plugin::Scalar - call object methods in scalar context
=head1 SYNOPSIS
[% USE scalar %]
# TT2 calls object methods in array context by default
[% object.method %]
# force it to use scalar context
[% object.scalar.method %]
# also works with subroutine references
[% scalar.my_sub_ref %]
=head1 DESCRIPTION
The Template Toolkit calls user-defined subroutines and object methods
using Perl's array context by default. This plugin module provides a way
for you to call subroutines and methods in scalar context.
=head1 AUTHOR
Andy Wardley E<lt>abw@wardley.orgE<gt> L<http://wardley.org/>
=head1 COPYRIGHT
Copyright (C) 2008 Andy Wardley. All Rights Reserved.
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
=head1 SEE ALSO
L<Template::Plugin>
=cut
# Local Variables:
# mode: perl
# perl-indent-level: 4
# indent-tabs-mode: nil
# End:
#
# vim: expandtab shiftwidth=4:
|