# -*- coding: utf-8 -*-
# Copyright (C) 2011-2012 Rocky Bernstein <rocky@cpan.org>
use warnings; no warnings 'redefine'; no warnings 'once';
use rlib '../../../../../..';
use Data::Dumper;
package Devel::Trepan::CmdProcessor::Command::Info::Variables::My;
use vars qw(@ISA @SUBCMD_VARS);
unless (@ISA) {
eval <<'EOE';
use constant MAX_ARGS => undef;
use constant NEED_STACK => 1;
EOE
}
use strict;
use Devel::Trepan::CmdProcessor::Command::Subcmd::Subsubcmd;
use PadWalker qw(peek_my);
use Devel::Trepan::CmdProcessor::Command::Subcmd::Core;
our $CMD = "info variables my";
my @CMD = split(/ /, $CMD);
our $MIN_ABBREV = length('m');
our $HELP = <<'HELP';
=pod
info variables my
info variables my -v
info variables my I<var1> [I<var2>...]
Lists C<my> variables at the current frame. Use the frame changing
commands like C<up>, C<down> or C<frame> set the current frame.
In the first form, give a list of C<my> variable names only. In the
second form, list variable names and values In the third form, list
variable names and values of VAR1, etc.
See also C<set variable>, and frame changing commands.
=cut
HELP
our $SHORT_HELP = "Information about 'my' variables.";
@ISA = qw(Devel::Trepan::CmdProcessor::Command::Subsubcmd);
sub get_var_hash($;$)
{
my ($self, $fixup_num) = @_;
# FIXME: combine with My.pm
my $i = 0;
while (my ($pkg, $file, $line, $fn) = caller($i++)) { ; };
my $diff = $i - $DB::stack_depth;
# FIXME: 5 is a magic fixup constant, also found in DB::finish.
# Remove it.
$fixup_num = 5 unless defined($fixup_num);
my $ref = peek_my($diff + $self->{proc}{frame_index} + $fixup_num);
return $ref;
}
sub complete($$;$)
{
my ($self, $prefix, $fixup_num) = @_;
my $var_hash = $self->get_var_hash($fixup_num);
my @vars = sort keys %$var_hash;
Devel::Trepan::Complete::complete_token(\@vars, $prefix) ;
}
sub show_var($$$)
{
my ($proc, $var_name, $ref) = @_;
my $dumper;
my $type = substr($var_name, 0, 1);
if ('$' eq $type) {
$dumper = Data::Dumper->new([${$ref}]);
$dumper->Useqq(0);
$dumper->Terse(1);
$dumper->Indent(0);
$proc->msg("$var_name = ". $dumper->Dump);
} elsif ('@' eq $type) {
$dumper = Data::Dumper->new([$ref]);
$dumper->Useqq(0);
$dumper->Terse(1);
$dumper->Indent(0);
$proc->msg("$var_name = ". $dumper->Dump);
} elsif ('%' eq $type) {
$dumper = Data::Dumper->new([$ref], [$var_name]);
$dumper->Useqq(0);
$dumper->Terse(0);
$dumper->Indent(0);
$proc->msg($dumper->Dump);
} else {
$dumper = Data::Dumper->new([$ref], [$var_name]);
$dumper->Useqq(0);
$dumper->Terse(1);
$dumper->Indent(0);
$proc->msg($dumper->Dump);
};
}
sub process_args($$$) {
my ($self, $args, $hash_ref) = @_;
my $lex_type = $self->{prefix}[-1];
my $proc = $self->{proc};
my @ARGS = @{$args};
my @names = sort keys %{$hash_ref};
if (0 == scalar @ARGS) {
if (scalar @names) {
$proc->section("$lex_type variables");
$proc->msg($self->{parent}{parent}->columnize_commands(\@names));
} else {
$proc->msg("No '$lex_type' variables at this level");
}
} else {
if ($ARGS[0] eq '-v') {
if (scalar @names) {
$proc->section("$lex_type variables");
for my $name (@names) {
show_var($proc, $name, $hash_ref->{$name});
}
} else {
$proc->msg("No '$lex_type' variables at this level");
}
} else {
for my $name (@ARGS) {
if (exists($hash_ref->{$name})) {
show_var($proc, $name, $hash_ref->{$name});
} else {
$proc->errmsg("No '$lex_type' variable $name found at this level");
}
}
}
}
}
sub run($$;$)
{
my ($self, $args, $fixup_num) = @_;
my $var_hash = $self->get_var_hash($fixup_num);
my @ARGS = splice(@{$args}, scalar(@CMD));
$self->process_args(\@ARGS, $var_hash);
}
unless (caller) {
# Demo it.
require Devel::Trepan;
my $proc = Devel::Trepan::CmdProcessor->new;
my $grandparent =
Devel::Trepan::CmdProcessor::Command::Info->new($proc, 'info');
my $parent =
Devel::Trepan::CmdProcessor::Command::Info::Variables->new($grandparent,
'variables');
my $cmd = __PACKAGE__->new($parent, 'my');
eval {
sub create_frame() {
my ($pkg, $file, $line, $fn) = caller(0);
$DB::package = $pkg;
return [
{
file => $file,
fn => $fn,
line => $line,
pkg => $pkg,
}];
}
};
my $frame_ary = create_frame();
$proc->frame_setup($frame_ary);
$cmd->run($cmd->{prefix}, -2);
my @args = @{$cmd->{prefix}};
push @args, '$args';
print '-' x 40, "\n";
$cmd->run(\@args, -2);
print '-' x 40, "\n";
$cmd->run($cmd->{prefix}, -1);
print '-' x 40, "\n";
my @complete = $cmd->complete('', -1);
print join(', ', @complete), "\n";
print '-' x 40, "\n";
@complete = $cmd->complete('$p', -1);
print join(', ', @complete), "\n";
}
1;