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package Reply::Plugin::Autocomplete::Lexicals;
use strict;
use warnings;
# ABSTRACT: tab completion for lexical variables
use base 'Reply::Plugin';
use PadWalker 'peek_sub';
=head1 SYNOPSIS
; .replyrc
[ReadLine]
[Autocomplete::Lexicals]
=head1 DESCRIPTION
This plugin registers a tab key handler to autocomplete lexical variables in
Perl code.
=cut
# XXX unicode?
my $var_name_rx = qr/[\$\@\%]([A-Z_a-z][0-9A-Z_a-z]*)?/;
sub new {
my $class = shift;
my $self = $class->SUPER::new(@_);
$self->{env} = {};
return $self;
}
sub lexical_environment {
my $self = shift;
my ($name, $env) = @_;
$self->{env}{$name} = $env;
}
sub tab_handler {
my $self = shift;
my ($line) = @_;
my ($var) = $line =~ /($var_name_rx)$/;
return unless $var;
my ($sigil, $name_prefix) = $var =~ /(.)(.*)/;
my $env = { map { %$_ } values %{ $self->{env} } };
my @env = keys %$env;
my @results;
for my $env_var (@env) {
my ($env_sigil, $env_name) = $env_var =~ /(.)(.*)/;
next unless index($env_name, $name_prefix) == 0;
if ($sigil eq $env_sigil) {
push @results, $env_name;
}
elsif ($env_sigil eq '@' && $sigil eq '$') {
push @results, "$env_name\[";
}
elsif ($env_sigil eq '%') {
push @results, "$env_name\{";
}
}
return @results;
}
=for Pod::Coverage
tab_handler
=cut
1;
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