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package Tk::CodeText::Perl;
use vars qw($VERSION);
$VERSION = '0.4';
use Syntax::Highlight::Perl;
use base 'Syntax::Highlight::Perl';
use strict;
use Data::Dumper;
sub new {
my ($proto, $rules) = @_;
my $class = ref($proto) || $proto;
my $self = $class->SUPER::new;
if (not defined($rules)) {
$rules = [
['DEFAULT', -foreground => 'black'],
['Comment_Normal', -foreground => 'lightblue'],
['Comment_Pod', -foreground => 'lightblue'],
['Directive', -foreground => 'brown'],
['Label', -foreground => 'black'],
['Quote', -foreground => 'red'],
['String', -foreground => 'red'],
['Variable_Scalar', -foreground => 'blue'],
['Variable_Array', -foreground => 'blue'],
['Variable_Hash', -foreground => 'blue'],
['Subroutine', -foreground => 'orange'],
['Character', -foreground => 'magenta'],
['Keyword', -foreground => 'brown'],
['Builtin_Operator', -foreground => 'darkgreen'],
['Operator', -foreground => 'brown'],
['Number', -foreground => 'darkblue'],
];
};
$self->{'rules'} = [];
bless ($self, $class);
$self->rules($rules);
$self->unstable(1);
return $self;
}
sub highlight {
my $hlt = shift;
my $txt = $hlt->format_string(shift);
my @target = ();
my @lst = split /\e\e\e/, $txt; #start to retrieve the color info tags.
while (@lst) { #set up the insert command options.
push(@target, length(shift @lst), shift @lst);
};
return @target;
}
sub rules {
my $hlt = shift;
if (@_) {
my $r = shift;
my %format = ();
foreach my $k (@$r) {
$format{$k->[0]} = ["", "\e\e\e" . $k->[0] . "\e\e\e"];
}
$hlt->set_format(%format);
$hlt->reset;
$hlt->{'rules'} = $r;
}
return $hlt->{'rules'};
}
sub stateCompare {
my ($hlt, $state) = @_;
my $h = [ $hlt->stateGet ];
my $equal = 1;
if (Dumper($h) ne Dumper($state)) { $equal = 0 };
return $equal;
}
sub stateGet {
my $hlt = shift;
return (
$hlt->in_heredoc,
$hlt->in_string,
$hlt->in_pod,
$hlt->was_pod,
$hlt->in_data,
$hlt->{'quote_instigator'},
$hlt->{'quote_terminator'},
$hlt->{'quote_type'},
$hlt->{'found_multi'},
$hlt->{'awaiting_multi'},
$hlt->{'awaiting_variable'},
$hlt->{'awaiting_class'},
$hlt->{'last_token'},
$hlt->{'last_token_type'},
$hlt->{'reentrant'},
);
}
sub stateSet {
my $hlt = shift;
$hlt->{'in_heredoc'} = shift;
$hlt->{'in_string'} = shift;
$hlt->{'in_pod'} = shift;
$hlt->{'was_pod'} = shift;
$hlt->{'in_data'} = shift;
$hlt->{'quote_instigator'} = shift;
$hlt->{'quote_terminator'} = shift;
$hlt->{'quote_type'} = shift;
$hlt->{'found_multi'} = shift;
$hlt->{'awaiting_multi'} = shift;
$hlt->{'awaiting_variable'} = shift;
$hlt->{'awaiting_class'} = shift;
$hlt->{'last_token'} = shift;
$hlt->{'last_token_type'} = shift;
$hlt->{'reentrant'} = shift;
}
sub syntax {
my $hlt = shift;
return 'Perl',
}
1;
__END__
=head1 NAME
Tk::CodeText::Perl - a Plugin for Perl syntax highlighting
=head1 SYNOPSIS
Tk::CodeText::Perl inherits Syntax::Highlight::Perl;
For its limitations see also there.
This module provides extra methods to provide syntax highlighting
for the Perl programming language.
=head1 METHODS
=over 4
=item B<highlight>(I<$string>);
returns a list of string snippets and tags that can be inserted
in a Tk::Text like widget instantly.
=item B<rules>(I<$txtwidget>,I<\@list>)
sets and returns a reference to a list of tagnames and options.
By default it is set to:
[
['Comment_Normal', -foreground => 'lightblue'],
['Comment_Pod', -foreground => 'lightblue'],
['Directive', -foreground => 'black'],
['Label', -foreground => 'black'],
['Quote', -foreground => 'red'],
['String', -foreground => 'red'],
['Variable_Scalar', -foreground => 'blue'],
['Variable_Array', -foreground => 'blue'],
['Variable_Hash', -foreground => 'blue'],
['Subroutine', -foreground => 'orange'],
['Character', -foreground => 'magenta'],
['Keyword', -foreground => 'darkgreen'],
['Builtin_Operator', -foreground => 'darkgreen'],
['Operator', -foreground => 'brown'],
['Number', -foreground => 'darkblue'],
]
=item B<rulesConfigure>(I<$txtwidget>,I<\@list>)
Used internally. Don't call it yourself.
=item B<rulesDelete>(I<$txtwidget>,I<\@list>)
=item B<stateCompare>(\@state);
Compares @state to the current state of the formatter.
returns true when equal.
=item B<stateGet>
Returns a list of the current state of the formatter.
Called by the highlighting routines in Tk::CodeText.
=item B<stateSet>(I<@list>)
Sets the state of the formatter. Called by the highlighting routines
in Tk::CodeText.
=back
=cut
=head1 AUTHOR
Hans Jeuken (haje@toneel.demon.nl)
=cut
=head1 BUGS
Propably plenty
=cut
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