# -*- coding: utf-8 -*-
# Copyright (C) 2011-2014 Rocky Bernstein <rocky@cpan.org>
use warnings; no warnings 'redefine';
use rlib '../../../..';
package Devel::Trepan::CmdProcessor::Command::Display;
use English qw( -no_match_vars );
use if !@ISA, Devel::Trepan::DB::Display ;
use if !@ISA, Devel::Trepan::Condition ;
use if !@ISA, Devel::Trepan::CmdProcessor::Command ;
unless (@ISA) {
eval <<"EOE";
use constant CATEGORY => 'data';
use constant NEED_STACK => 0;
use constant SHORT_HELP =>
'Display expressions when entering debugger';
use constant MIN_ARGS => 1; # Need at least this many
use constant MAX_ARGS => undef; # Need at most this many - undef -> unlimited.
EOE
}
use strict; use vars qw(@ISA); @ISA = @CMD_ISA;
use vars @CMD_VARS; # Value inherited from parent
our $NAME = set_name();
=pod
=head2 Synopsis:
=cut
our $HELP = <<'HELP';
=pod
B<display> I<Perl-expression>
Print value of expression I<Perl-expression> each time the program stops.
=head2 Examples:
display $a # Display variable \$a each time we enter debugger
display join(', ', @ARGV) # show values of array @ARGV
If what you want to do is evaluate a Perl expression or statement once
rather than every time the program stops, see C<eval>.
See also C<undisplay>, C<enable>, C<disable>.
=cut
HELP
# This method runs the command
sub run($$) {
my ($self, $args) = @_;
my $proc = $self->{proc};
my $display;
my @args = @{$args};
shift @args;
$display = join(' ', @args);
unless (is_valid_condition($display)) {
$proc->errmsg("Invalid display: $display");
return
}
my $disp = $proc->{displays}->add($display);
if ($disp) {
my $mess = sprintf("Display %d set", $disp->number);
$proc->msg($mess);
}
}
unless (caller) {
require Devel::Trepan::CmdProcessor::Mock;
my $proc = Devel::Trepan::CmdProcessor::Mock::setup();
# my $cmd = __PACKAGE__->new($proc);
# $cmd->run([$NAME]);
}
1;