/usr/share/perl5/Text/MicroMason/Embperl.pm is in libtext-micromason-perl 2.13-2.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 | package Text::MicroMason::Embperl;
use strict;
use Carp;
use Safe;
######################################################################
my %block_types = (
'-' => 'perl', # [- perl statements -]
'+' => 'expr', # [+ perl expression +]
'!' => 'once', # [! perl statements !]
'$' => 'ep_meta', # [$ command args $]
);
sub lex_token {
# Blocks in [-/+/! ... -/+/!] tags.
/\G \[ (\-|\+|\!) \s* (.*?) \s* \1 \] /gcxs ? ( $block_types{$1} => $2 ) :
# Blocks in [$ command ... $] tags.
/\G \[ \$ \s* (\S+)\s*(.*?) \s* \$ \] /gcxs ? ( "ep_$1" => $2 ) :
# Things that don't match the above
/\G ( (?: [^\[] | \[(?![\-\+\!\$]) )+ ) /gcxs ? ( 'text' => $1 ) :
()
}
######################################################################
sub assembler_rules {
my $self = shift;
$self->NEXT('assembler_rules', @_),
ep_if_token => "perl if ( TOKEN ) {",
ep_elsif_token => "perl } elsif ( TOKEN ) {",
ep_else_token => "perl } else {",
ep_endif_token => "perl }",
ep_while_token => "perl while ( TOKEN ) {",
ep_endwhile_token => "perl }",
ep_foreach_token => "perl foreach TOKEN {",
ep_endforeach_token => "perl }",
ep_do_token => "perl do {",
ep_until_token => "perl } until ( TOKEN );",
ep_var_token => "perl use strict; use vars qw( TOKEN );",
}
######################################################################
1;
__END__
######################################################################
=head1 NAME
Text::MicroMason::Embperl - Alternate Syntax like Embperl Templates
=head1 SYNOPSIS
Instead of using this class directly, pass its name to be mixed in:
use Text::MicroMason;
my $mason = Text::MicroMason::Base->new( -Embperl );
Use the standard compile and execute methods to parse and evalute templates:
print $mason->compile( text=>$template )->( @%args );
print $mason->execute( text=>$template, @args );
Embperl syntax provides several ways to mix Perl into a text template:
[- my $name = $ARGS{name}; -]
[$ if $name eq 'Dave' $]
I'm sorry [+ $name +], I'm afraid I can't do that right now.
[$ else $]
[-
my $hour = (localtime)[2];
my $daypart = ( $hour > 11 ) ? 'afternoon' : 'morning';
-]
Good [+ $daypart +], [+ $name +]!
[$ endif $]
=head1 DESCRIPTION
This subclass replaces MicroMason's normal lexer with one that supports a syntax similar to Embperl.
=head2 Compatibility with Embperl
Embperl is a full-featured application server toolkit with many fatures, of which only the templating functionality is emulated.
This is not a drop-in replacement for Embperl, as the implementation is quite different, but it should be able to process some existing templates without major changes.
The following features of EmbPerl syntax are supported:
=over 4
=item *
Square-bracket markup tags
=back
The following syntax features of are B<not> supported:
=over 4
=item *
Dynamic HTML tags
=back
=head2 Template Syntax
The following elements are recognized by the Embperl lexer:
=over 4
=item *
[- perl statements -]
Arbitrary Perl code to be executed at this point in the template.
=item *
[+ perl expression +]
A Perl expression to be evaluated and included in the output.
=item *
[! perl statements !]
Arbitrary Perl code to be executed once when the template is compiled.
=item *
[$ I<name> ... $]
Supported command names are: if, elsif, else, endif, foreach, endforeach, while, endwhile, do, until, var.
=back
=head2 Private Methods
=over 4
=item lex_token
( $type, $value ) = $mason->lex_token();
Lexer for [. ... .] tags.
Attempts to parse a token from the template text stored in the global $_ and returns a token type and value. Returns an empty list if unable to parse further due to an error.
=item assembler_rules()
Adds mappings from command names used in [$ ... $] tokens to the equivalent
Perl syntax.
%syntax_rules = $mason->assembler_rules();
=back
=cut
=head1 SEE ALSO
For an overview of this templating framework, see L<Text::MicroMason>.
This is a mixin class intended for use with L<Text::MicroMason::Base>.
For distribution, installation, support, copyright and license
information, see L<Text::MicroMason::Docs::ReadMe>.
=cut
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