# -*- coding: utf-8 -*-
# Copyright (C) 2011-2012 Rocky Bernstein <rocky@cpan.org>
use warnings; no warnings 'redefine';
use rlib '../../../..';
package Devel::Trepan::CmdProcessor::Command::Condition;
use English qw( -no_match_vars );
use if !@ISA, Devel::Trepan::Condition ;
use if !@ISA, Devel::Trepan::CmdProcessor::Command ;
unless (@ISA) {
eval <<"EOE";
use constant ALIASES => qw(cond);
use constant CATEGORY => 'breakpoints';
use constant NEED_STACK => 0;
use constant SHORT_HELP =>
'Specify a condition on a breakpoint';
use constant MIN_ARGS => 2; # 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();
our $HELP = <<'HELP';
=pod
B<condition> I<bp-number> I<Perl-expression>
I<bp-number> is a breakpoint number. I<Perl-expresion> is a Perl
expression which must evaluate to true before the breakpoint is
honored. If I<perl-expression> is absent, any existing condition is removed;
i.e., the breakpoint is made unconditional.
=head2 Examples:
condition 5 x > 10 # Breakpoint 5 now has condition x > 10
condition 5 # Remove above condition
See also L<C<break>|Devel::Trepan::CmdProcessor::Command::Break>,
L<C<enable>|Devel::Trepan::CmdProcessor::Command::Enable> and
L<C<disable>|Devel::Trepan::CmdProcessor::Command::Disable>>.
=cut
HELP
# This method runs the command
sub run($$) {
my ($self, $args) = @_;
my $proc = $self->{proc};
my $bpnum = $proc->get_an_int($args->[1]);
return unless defined($bpnum);
my $bp = $proc->{brkpts}->find($bpnum);
unless ($bp) {
$proc->errmsg("No breakpoint number $bpnum");
return;
}
my $condition;
if (scalar @{$args} > 2) {
my @args = @{$args};
shift @args; shift @args;
$condition = join(' ', @args);
my $msg = &DB::eval_not_ok($condition);
if ($msg) {
$proc->errmsg("Invalid condition: $condition");
chomp $msg;
$proc->errmsg($msg);
return
}
} else {
$condition = '1';
$proc->msg('Breakpoint $bp->id is now unconditional.');
}
$bp->condition($condition);
}
unless (caller) {
require Devel::Trepan::CmdProcessor::Mock;
my $proc = Devel::Trepan::CmdProcessor::Mock::setup();
# my $cmd = __PACKAGE__->new($proc);
# $cmd->run([$NAME]);
}
1;