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- 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 ($op) = @_;
- printf <<'EOT', class($op), $$op, ${$op->next}, ${$op->sibling}, $op->ppaddr, $op->targ, $op->type, $op->seq, $op->flags, $op->private;
- %s (0x%lx)
- op_next 0x%x
- op_sibling 0x%x
- op_ppaddr %s
- op_targ %d
- op_type %d
- op_seq %d
- op_flags %d
- op_private %d
- EOT
- }
-
- sub B::UNOP::debug {
- my ($op) = @_;
- $op->B::OP::debug();
- printf "\top_first\t0x%x\n", ${$op->first};
- }
-
- sub B::BINOP::debug {
- my ($op) = @_;
- $op->B::UNOP::debug();
- printf "\top_last\t\t0x%x\n", ${$op->last};
- }
-
- sub B::LOGOP::debug {
- my ($op) = @_;
- $op->B::UNOP::debug();
- printf "\top_other\t0x%x\n", ${$op->other};
- }
-
- sub B::LISTOP::debug {
- my ($op) = @_;
- $op->B::BINOP::debug();
- printf "\top_children\t%d\n", $op->children;
- }
-
- sub B::PMOP::debug {
- my ($op) = @_;
- $op->B::LISTOP::debug();
- printf "\top_pmreplroot\t0x%x\n", ${$op->pmreplroot};
- printf "\top_pmreplstart\t0x%x\n", ${$op->pmreplstart};
- printf "\top_pmnext\t0x%x\n", ${$op->pmnext};
- printf "\top_pmregexp->precomp\t%s\n", cstring($op->precomp);
- printf "\top_pmflags\t0x%x\n", $op->pmflags;
- $op->pmshort->debug;
- $op->pmreplroot->debug;
- }
-
- sub B::COP::debug {
- my ($op) = @_;
- $op->B::OP::debug();
- printf <<'EOT', $op->label, $op->stashpv, $op->file, $op->seq, $op->arybase, $op->line, ${$op->warnings};
- cop_label %s
- cop_stashpv %s
- cop_file %s
- cop_seq %d
- cop_arybase %d
- cop_line %d
- cop_warnings 0x%x
- EOT
- }
-
- sub B::SVOP::debug {
- my ($op) = @_;
- $op->B::OP::debug();
- printf "\top_sv\t\t0x%x\n", ${$op->sv};
- $op->sv->debug;
- }
-
- sub B::PVOP::debug {
- my ($op) = @_;
- $op->B::OP::debug();
- printf "\top_pv\t\t0x%x\n", $op->pv;
- }
-
- sub B::PADOP::debug {
- my ($op) = @_;
- $op->B::OP::debug();
- printf "\top_padix\t\t%ld\n", $op->padix;
- }
-
- sub B::CVOP::debug {
- my ($op) = @_;
- $op->B::OP::debug();
- printf "\top_cv\t\t0x%x\n", ${$op->cv};
- }
-
- sub B::NULL::debug {
- my ($sv) = @_;
- if ($$sv == ${sv_undef()}) {
- print "&sv_undef\n";
- } else {
- printf "NULL (0x%x)\n", $$sv;
- }
- }
-
- sub B::SV::debug {
- my ($sv) = @_;
- if (!$$sv) {
- print class($sv), " = NULL\n";
- return;
- }
- printf <<'EOT', class($sv), $$sv, $sv->REFCNT, $sv->FLAGS;
- %s (0x%x)
- REFCNT %d
- FLAGS 0x%x
- EOT
- }
-
- sub B::PV::debug {
- my ($sv) = @_;
- $sv->B::SV::debug();
- my $pv = $sv->PV();
- printf <<'EOT', cstring($pv), length($pv);
- xpv_pv %s
- xpv_cur %d
- EOT
- }
-
- sub B::IV::debug {
- my ($sv) = @_;
- $sv->B::SV::debug();
- printf "\txiv_iv\t\t%d\n", $sv->IV;
- }
-
- sub B::NV::debug {
- my ($sv) = @_;
- $sv->B::IV::debug();
- printf "\txnv_nv\t\t%s\n", $sv->NV;
- }
-
- sub B::PVIV::debug {
- my ($sv) = @_;
- $sv->B::PV::debug();
- printf "\txiv_iv\t\t%d\n", $sv->IV;
- }
-
- sub B::PVNV::debug {
- my ($sv) = @_;
- $sv->B::PVIV::debug();
- printf "\txnv_nv\t\t%s\n", $sv->NV;
- }
-
- sub B::PVLV::debug {
- my ($sv) = @_;
- $sv->B::PVNV::debug();
- printf "\txlv_targoff\t%d\n", $sv->TARGOFF;
- printf "\txlv_targlen\t%u\n", $sv->TARGLEN;
- printf "\txlv_type\t%s\n", cstring(chr($sv->TYPE));
- }
-
- sub B::BM::debug {
- my ($sv) = @_;
- $sv->B::PVNV::debug();
- printf "\txbm_useful\t%d\n", $sv->USEFUL;
- printf "\txbm_previous\t%u\n", $sv->PREVIOUS;
- printf "\txbm_rare\t%s\n", cstring(chr($sv->RARE));
- }
-
- sub B::CV::debug {
- my ($sv) = @_;
- $sv->B::PVNV::debug();
- my ($stash) = $sv->STASH;
- my ($start) = $sv->START;
- my ($root) = $sv->ROOT;
- my ($padlist) = $sv->PADLIST;
- my ($file) = $sv->FILE;
- my ($gv) = $sv->GV;
- printf <<'EOT', $$stash, $$start, $$root, $$gv, $file, $sv->DEPTH, $padlist, ${$sv->OUTSIDE};
- STASH 0x%x
- START 0x%x
- ROOT 0x%x
- GV 0x%x
- FILE %s
- DEPTH %d
- PADLIST 0x%x
- OUTSIDE 0x%x
- EOT
- $start->debug if $start;
- $root->debug if $root;
- $gv->debug if $gv;
- $padlist->debug if $padlist;
- }
-
- sub B::AV::debug {
- my ($av) = @_;
- $av->B::SV::debug;
- my(@array) = $av->ARRAY;
- print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @array)), ")\n";
- printf <<'EOT', scalar(@array), $av->MAX, $av->OFF, $av->AvFLAGS;
- FILL %d
- MAX %d
- OFF %d
- AvFLAGS %d
- EOT
- }
-
- sub B::GV::debug {
- my ($gv) = @_;
- if ($done_gv{$$gv}++) {
- printf "GV %s::%s\n", $gv->STASH->NAME, $gv->NAME;
- return;
- }
- my ($sv) = $gv->SV;
- my ($av) = $gv->AV;
- my ($cv) = $gv->CV;
- $gv->B::SV::debug;
- printf <<'EOT', $gv->NAME, $gv->STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILE, $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
- FILE %s
- 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 $order = shift;
- B::clearsym();
- if ($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<ext/B/README>.
-
- =head1 AUTHOR
-
- Malcolm Beattie, C<mbeattie@sable.ox.ac.uk>
-
- =cut
-