Note: this has been heavily edited.

With help from stackoverflow, I have a way to get started.

use B::Deparse;
use B::Concise qw(set_style);
sub foo() {
    my $x=1; $x+=1;
    my $z=0;
}

my $deparse = B::Deparse->new("-p", "-l", "-sC");

$body = $deparse->coderef2text(\&foo);
print($body, "\n");
my $walker = B::Concise::compile('-basic', 'foo', \&foo);
B::Concise::set_style_standard('debug');
B::Concise::walk_output(\my $buf);
$walker->();            # walks and renders into $buf;
print($buf);

package B::Deparse;

sub lineseq {
    my($self, $root, $cx, @ops) = @_;
    my($expr, @exprs);

    my $out_cop = $self->{'curcop'};
    my $out_seq = defined($out_cop) ? $out_cop->cop_seq : undef;
    my $limit_seq;
    if (defined $root) {
    $limit_seq = $out_seq;
    my $nseq;
    $nseq = $self->find_scope_st($root->sibling) if ${$root->sibling};
    $limit_seq = $nseq if !defined($limit_seq)
               or defined($nseq) && $nseq < $limit_seq;
    }
    $limit_seq = $self->{'limit_seq'}
    if defined($self->{'limit_seq'})
    && (!defined($limit_seq) || $self->{'limit_seq'} < $limit_seq);
    local $self->{'limit_seq'} = $limit_seq;

    my $fn = sub {
    my ($text, $i) = @_;
    my $op = $ops[$i];
    push @exprs, sprintf("# op: 0x%x\n%s ", $$op, $text);
    };
    $self->walk_lineseq($root, \@ops, $fn);
    # $self->walk_lineseq($root, \@ops,
    #                sub { push @exprs, $_[0]} );

    my $sep = $cx ? '; ' : ";\n";
    my $body = join($sep, grep {length} @exprs);
    my $subs = "";
    if (defined $root && 
        defined $limit_seq && !$self->{'in_format'}) {
        $subs = join "\n", $self->seq_subs($limit_seq);
    }
    return join($sep, grep {length} $body, $subs);
}

[download]

In reply to Re^2: RFC: Location via B::Deparse by rockyb
in thread RFC: Location via B::Deparse by rockyb

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