package B::Debug;
use strict;
use B qw(peekop class walkoptree walkoptree_exec
main_start main_root cstring sv_undef);
use B::Asmdata qw(@specialsv_name);
my %done_gv;
sub B::OP::debug {
my ($op) = @_;
printf sibling}, $op->ppaddr, $op->targ, $op->type, $op->seq, $op->flags, $op->private;
%s (0x%lx)
op_next 0x%x
op_sibling 0x%x
op_ppaddr %s
op_targ %d
op_type %d
op_seq %d
op_flags %d
op_private %d
EOT
}
sub B::UNOP::debug {
my ($op) = @_;
$op->B::OP::debug();
printf "\top_first\t0x%x\n", ${$op->first};
}
sub B::BINOP::debug {
my ($op) = @_;
$op->B::UNOP::debug();
printf "\top_last\t\t0x%x\n", ${$op->last};
}
sub B::LOGOP::debug {
my ($op) = @_;
$op->B::UNOP::debug();
printf "\top_other\t0x%x\n", ${$op->other};
}
sub B::CONDOP::debug {
my ($op) = @_;
$op->B::UNOP::debug();
printf "\top_true\t0x%x\n", ${$op->true};
printf "\top_false\t0x%x\n", ${$op->false};
}
sub B::LISTOP::debug {
my ($op) = @_;
$op->B::BINOP::debug();
printf "\top_children\t%d\n", $op->children;
}
sub B::PMOP::debug {
my ($op) = @_;
$op->B::LISTOP::debug();
printf "\top_pmreplroot\t0x%x\n", ${$op->pmreplroot};
printf "\top_pmreplstart\t0x%x\n", ${$op->pmreplstart};
printf "\top_pmnext\t0x%x\n", ${$op->pmnext};
printf "\top_pmregexp->precomp\t%s\n", cstring($op->precomp);
printf "\top_pmflags\t0x%x\n", $op->pmflags;
$op->pmshort->debug;
$op->pmreplroot->debug;
}
sub B::COP::debug {
my ($op) = @_;
$op->B::OP::debug();
my ($filegv) = $op->filegv;
printf stash}, $$filegv, $op->seq, $op->arybase, $op->line;
cop_label %s
cop_stash 0x%x
cop_filegv 0x%x
cop_seq %d
cop_arybase %d
cop_line %d
EOT
$filegv->debug;
}
sub B::SVOP::debug {
my ($op) = @_;
$op->B::OP::debug();
printf "\top_sv\t\t0x%x\n", ${$op->sv};
$op->sv->debug;
}
sub B::PVOP::debug {
my ($op) = @_;
$op->B::OP::debug();
printf "\top_pv\t\t0x%x\n", $op->pv;
}
sub B::GVOP::debug {
my ($op) = @_;
$op->B::OP::debug();
printf "\top_gv\t\t0x%x\n", ${$op->gv};
$op->gv->debug;
}
sub B::CVOP::debug {
my ($op) = @_;
$op->B::OP::debug();
printf "\top_cv\t\t0x%x\n", ${$op->cv};
}
sub B::NULL::debug {
my ($sv) = @_;
if ($$sv == ${sv_undef()}) {
print "&sv_undef\n";
} else {
printf "NULL (0x%x)\n", $$sv;
}
}
sub B::SV::debug {
my ($sv) = @_;
if (!$$sv) {
print class($sv), " = NULL\n";
return;
}
printf FLAGS;
%s (0x%x)
REFCNT %d
FLAGS 0x%x
EOT
}
sub B::PV::debug {
my ($sv) = @_;
$sv->B::SV::debug();
my $pv = $sv->PV();
printf xpv_pv %s
xpv_cur %d
EOT
}
sub B::IV::debug {
my ($sv) = @_;
$sv->B::SV::debug();
printf "\txiv_iv\t\t%d\n", $sv->IV;
}
sub B::NV::debug {
my ($sv) = @_;
$sv->B::IV::debug();
printf "\txnv_nv\t\t%s\n", $sv->NV;
}
sub B::PVIV::debug {
my ($sv) = @_;
$sv->B::PV::debug();
printf "\txiv_iv\t\t%d\n", $sv->IV;
}
sub B::PVNV::debug {
my ($sv) = @_;
$sv->B::PVIV::debug();
printf "\txnv_nv\t\t%s\n", $sv->NV;
}
sub B::PVLV::debug {
my ($sv) = @_;
$sv->B::PVNV::debug();
printf "\txlv_targoff\t%d\n", $sv->TARGOFF;
printf "\txlv_targlen\t%u\n", $sv->TARGLEN;
printf "\txlv_type\t%s\n", cstring(chr($sv->TYPE));
}
sub B::BM::debug {
my ($sv) = @_;
$sv->B::PVNV::debug();
printf "\txbm_useful\t%d\n", $sv->USEFUL;
printf "\txbm_previous\t%u\n", $sv->PREVIOUS;
printf "\txbm_rare\t%s\n", cstring(chr($sv->RARE));
}
sub B::CV::debug {
my ($sv) = @_;
$sv->B::PVNV::debug();
my ($stash) = $sv->STASH;
my ($start) = $sv->START;
my ($root) = $sv->ROOT;
my ($padlist) = $sv->PADLIST;
my ($gv) = $sv->GV;
my ($filegv) = $sv->FILEGV;
printf OUTSIDE};
STASH 0x%x
START 0x%x
ROOT 0x%x
GV 0x%x
FILEGV 0x%x
DEPTH %d
PADLIST 0x%x
OUTSIDE 0x%x
EOT
$start->debug if $start;
$root->debug if $root;
$gv->debug if $gv;
$filegv->debug if $filegv;
$padlist->debug if $padlist;
}
sub B::AV::debug {
my ($av) = @_;
$av->B::SV::debug;
my(@array) = $av->ARRAY;
print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @array)), ")\n";
printf OFF, $av->AvFLAGS;
FILL %d
MAX %d
OFF %d
AvFLAGS %d
EOT
}
sub B::GV::debug {
my ($gv) = @_;
if ($done_gv{$$gv}++) {
printf "GV %s::%s\n", $gv->STASH->NAME, $gv->NAME;
return;
}
my ($sv) = $gv->SV;
my ($av) = $gv->AV;
my ($cv) = $gv->CV;
$gv->B::SV::debug;
printf STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILEGV, $gv->GvFLAGS;
NAME %s
STASH %s (0x%x)
SV 0x%x
GvREFCNT %d
FORM 0x%x
AV 0x%x
HV 0x%x
EGV 0x%x
CV 0x%x
CVGEN %d
LINE %d
FILEGV 0x%x
GvFLAGS 0x%x
EOT
$sv->debug if $sv;
$av->debug if $av;
$cv->debug if $cv;
}
sub B::SPECIAL::debug {
my $sv = shift;
print $specialsv_name[$$sv], "\n";
}
sub compile {
my $order = shift;
if ($order eq "exec") {
return sub { walkoptree_exec(main_start, "debug") }
} else {
return sub { walkoptree(main_root, "debug") }
}
}
1;
__END__
=head1 NAME
B::Debug - Walk Perl syntax tree, printing debug info about ops
=head1 SYNOPSIS
perl -MO=Debug[,OPTIONS] foo.pl
=head1 DESCRIPTION
See F.
=head1 AUTHOR
Malcolm Beattie, C
=cut
