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