File Coverage

blib/lib/B/Debug.pm

Criterion	Covered	Total	%
statement	0	196	0.0
branch	0	96	0.0
condition	0	12	0.0
subroutine	0	32	0.0
pod	0	1	0.0
total	0	337	0.0

package B::Debug;

our $VERSION = '1.24';

use strict;
require 5.006;
use B qw(peekop class walkoptree walkoptree_exec
         main_start main_root cstring sv_undef SVf_NOK SVf_IOK);
use Config;
my (@optype, @specialsv_name);
require B;
if ($] < 5.009) {
  require B::Asmdata;
  B::Asmdata->import (qw(@optype @specialsv_name));
} else {
  B->import (qw(@optype @specialsv_name));
}

if ($] < 5.006002) {
  eval q|sub B::GV::SAFENAME {
    my $name = (shift())->NAME;
    # The regex below corresponds to the isCONTROLVAR macro from toke.c
    $name =~ s/^([\cA-\cZ\c\\c[\c]\c?\c_\c^])/"^".chr(64 ^ ord($1))/e;
    return $name;
  }|;
}

my ($have_B_Flags, $have_B_Flags_extra);
if (!$ENV{PERL_CORE}){ # avoid CORE test crashes
  eval { require B::Flags and $have_B_Flags++ };
  $have_B_Flags_extra++ if $have_B_Flags and $B::Flags::VERSION gt '0.03';
}
my %done_gv;

sub _printop {
  my $op = shift;
  my $addr = ${$op} ? $op->ppaddr : '';
  $addr =~ s/^PL_ppaddr// if $addr;
  if (${$op}) {
    return sprintf "0x%08x %6s %s", ${$op}, class($op), $addr;
  } else {
    return sprintf "0x%x %6s %s", ${$op}, '', $addr;
  }
}

sub B::OP::debug {
    my ($op) = @_;
    printf <<'EOT', class($op), $$op, _printop($op), _printop($op->next), _printop($op->sibling), $op->targ, $op->type, $op->name;
%s (0x%lx)
	op_ppaddr	%s
	op_next		%s
	op_sibling	%s
	op_targ		%d
	op_type		%d	%s
EOT
    if ($] > 5.009) {
	printf <<'EOT', $op->opt;
	op_opt		%d
EOT
    } else {
	printf <<'EOT', $op->seq;
	op_seq		%d
EOT
    }
    if ($have_B_Flags) {
        printf <<'EOT', $op->flags, $op->flagspv, $op->private, $op->privatepv;
	op_flags	%d	%s
	op_private	%d	%s
EOT
    } else {
        printf <<'EOT', $op->flags, $op->private;
	op_flags	%d
	op_private	%d
EOT
    }
}

sub B::UNOP::debug {
    my ($op) = @_;
    $op->B::OP::debug();
    printf "\top_first\t%s\n", _printop($op->first);
}

sub B::BINOP::debug {
    my ($op) = @_;
    $op->B::UNOP::debug();
    printf "\top_last \t%s\n", _printop($op->last);
}

sub B::LOOP::debug {
    my ($op) = @_;
    $op->B::BINOP::debug();
    printf <<'EOT', _printop($op->redoop), _printop($op->nextop), _printop($op->lastop);
	op_redoop	%s
	op_nextop	%s
	op_lastop	%s
EOT
}

sub B::LOGOP::debug {
    my ($op) = @_;
    $op->B::UNOP::debug();
    printf "\top_other\t%s\n", _printop($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", $] < 5.008 ? ${$op->pmreplroot} : $op->pmreplroot;
    printf "\top_pmreplstart\t0x%x\n", ${$op->pmreplstart};
    printf "\top_pmnext\t0x%x\n", ${$op->pmnext} if $] < 5.009005;
    if ($Config{'useithreads'}) {
      printf "\top_pmstashpv\t%s\n", cstring($op->pmstashpv);
      printf "\top_pmoffset\t%d\n", $op->pmoffset;
    } else {
      printf "\top_pmstash\t%s\n", cstring($op->pmstash);
    }
    printf "\top_precomp\t%s\n", cstring($op->precomp);
    printf "\top_pmflags\t0x%x\n", $op->pmflags;
    printf "\top_reflags\t0x%x\n", $op->reflags if $] >= 5.009;
    printf "\top_pmpermflags\t0x%x\n", $op->pmpermflags if $] < 5.009;
    printf "\top_pmdynflags\t0x%x\n", $op->pmdynflags if $] < 5.009;
    $op->pmreplroot->debug if $] < 5.008;
}

sub B::COP::debug {
    my ($op) = @_;
    $op->B::OP::debug();
    my $warnings = ref $op->warnings ? ${$op->warnings} : 0;
    printf <<'EOT', $op->label, $op->stashpv, $op->file, $op->cop_seq, $op->arybase, $op->line, $warnings;
	cop_label	"%s"
	cop_stashpv	"%s"
	cop_file	"%s"
	cop_seq		%d
	cop_arybase	%d
	cop_line	%d
	cop_warnings	0x%x
EOT
  if ($] > 5.008 and $] < 5.011) {
    my $cop_io = class($op->io) eq 'SPECIAL' ? '' : $op->io->as_string;
    printf("	cop_io		%s\n", cstring($cop_io));
  }
}

sub B::SVOP::debug {
    my ($op) = @_;
    $op->B::OP::debug();
    printf "\top_sv\t\t0x%x\n", ${$op->sv};
    $op->sv->debug;
}

sub B::METHOP::debug {
    my ($op) = @_;
    $op->B::OP::debug();
    if (${$op->first})  {
      printf "\top_first\t0x%x\n", ${$op->first};
      $op->first->debug;
    } else {
      printf "\top_meth_sv\t0x%x\n", ${$op->meth_sv};
      $op->meth_sv->debug;
    }
}

sub B::PVOP::debug {
    my ($op) = @_;
    $op->B::OP::debug();
    printf "\top_pv\t\t%s\n", cstring($op->pv);
}

sub B::PADOP::debug {
    my ($op) = @_;
    $op->B::OP::debug();
    printf "\top_padix\t%ld\n", $op->padix;
}

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;
%s (0x%x)
	REFCNT		%d
EOT
    printf "\tFLAGS\t\t0x%x", $sv->FLAGS;
    if ($have_B_Flags) {
      printf "\t%s", $have_B_Flags_extra ? $sv->flagspv(0) : $sv->flagspv;
    }
    print "\n";
}

sub B::RV::debug {
    my ($rv) = @_;
    B::SV::debug($rv);
    printf <<'EOT', ${$rv->RV};
	RV		0x%x
EOT
    $rv->RV->debug;
}

sub B::PV::debug {
    my ($sv) = @_;
    $sv->B::SV::debug();
    my $pv = $sv->PV();
    printf <<'EOT', cstring($pv), $sv->CUR, $sv->LEN;
	xpv_pv		%s
	xpv_cur		%d
	xpv_len		%d
EOT
}

sub B::IV::debug {
    my ($sv) = @_;
    $sv->B::SV::debug();
    printf "\txiv_iv\t\t%d\n", $sv->IV if $sv->FLAGS & SVf_IOK;
}

sub B::NV::debug {
    my ($sv) = @_;
    $sv->B::IV::debug();
    printf "\txnv_nv\t\t%s\n", $sv->NV if $sv->FLAGS & SVf_NOK;
}

sub B::PVIV::debug {
    my ($sv) = @_;
    $sv->B::PV::debug();
    printf "\txiv_iv\t\t%d\n", $sv->IV if $sv->FLAGS & SVf_IOK;
}

sub B::PVNV::debug {
    my ($sv) = @_;
    $sv->B::PVIV::debug();
    printf "\txnv_nv\t\t%s\n", $sv->NV if $sv->FLAGS & SVf_NOK;
}

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, $$root;
	STASH		0x%x
	START		0x%x
	ROOT		0x%x
EOT
    if ( $]>5.017 && ($sv->FLAGS & 0x40000)) { #lexsub
      printf("\tNAME\t%%s\n", $sv->NAME);
    } else {
      printf("\tGV\t%0x%x\t%s\n", $$gv, $gv->SAFENAME);
    }
    printf <<'EOT', $file, $sv->DEPTH, $padlist, ${$sv->OUTSIDE};
	FILE		%s
	DEPTH		%d
	PADLIST		0x%x
	OUTSIDE		0x%x
EOT
    printf("\tOUTSIDE_SEQ\t%d\n", $sv->OUTSIDE_SEQ) if $] > 5.007;
    if ($have_B_Flags) {
      my $SVt_PVCV = $] < 5.010 ? 12 : 13;
      printf("\tCvFLAGS\t0x%x\t%s\n", $sv->CvFLAGS,
	     $have_B_Flags_extra ? $sv->flagspv($SVt_PVCV) : $sv->flagspv);
    } else {
      printf("\tCvFLAGS\t0x%x\n", $sv->CvFLAGS);
    }
    $start->debug if $start;
    $root->debug if $root;
    $gv->debug if $gv;
    $padlist->debug if $padlist;
}

sub B::AV::debug {
    my ($av) = @_;
    $av->B::SV::debug;
    _array_debug($av);
}

sub _array_debug {
    my ($av) = @_;
    # tied arrays may leave out FETCHSIZE
    my (@array) = eval { $av->ARRAY; };
    print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @array)), ")\n";
    my $fill = eval { scalar(@array) };
    if ($Config{'useithreads'} && class($av) ne 'PADLIST') {
      printf <<'EOT', $fill, $av->MAX, $av->OFF;
	FILL		%d
	MAX		%d
	OFF		%d
EOT
    } else {
      printf <<'EOT', $fill, $av->MAX;
	FILL		%d
	MAX		%d
EOT
    }
    if ($] < 5.009) {
      if ($have_B_Flags) {
	printf("\tAvFLAGS\t0x%x\t%s\n", $av->AvFLAGS,
	       $have_B_Flags_extra ? $av->flagspv(10) : $av->flagspv);
      } else {
	printf("\tAvFLAGS\t0x%x\n", $av->AvFLAGS);
      }
    }
}

sub B::GV::debug {
    my ($gv) = @_;
    if ($done_gv{$$gv}++) {
	printf "GV %s::%s\n", $gv->STASH->NAME, $gv->SAFENAME;
	return;
    }
    my $sv = $gv->SV;
    my $av = $gv->AV;
    my $cv = $gv->CV;
    $gv->B::SV::debug;
    printf <<'EOT', $gv->SAFENAME, $gv->STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILE, $gv->GvFLAGS;
	NAME		%s
	STASH		%s (0x%x)
	SV		0x%x
	GvREFCNT	%d
	FORM		0x%x
	AV		0x%x
	HV		0x%x
	EGV		0x%x
	CV		0x%x
	CVGEN		%d
	LINE		%d
	FILE		%s
EOT
    if ($have_B_Flags) {
      my $SVt_PVGV = $] < 5.010 ? 13 : 9;
      printf("\tGvFLAGS\t0x%x\t%s\n", $gv->GvFLAGS,
	     $have_B_Flags_extra ? $gv->flagspv($SVt_PVGV) : $gv->flagspv);
    } else {
      printf("\tGvFLAGS\t0x%x\n", $gv->GvFLAGS);
    }
    $sv->debug if $sv;
    $av->debug if $av;
    $cv->debug if $cv;
}

sub B::SPECIAL::debug {
    my $sv = shift;
    my $i = ref $sv ? $$sv : 0;
    print defined $specialsv_name[$i] ? $specialsv_name[$i] : "", "\n";
}

sub B::PADLIST::debug {
    my ($padlist) = @_;
    printf <<'EOT', class($padlist), $$padlist, $padlist->REFCNT;
%s (0x%x)
	REFCNT		%d
EOT
    _array_debug($padlist);
}

sub compile {
    my $order = shift;
    B::clearsym();
    $DB::single = 1 if defined &DB::DB;
    if ($order && $order eq "exec") {
        return sub { walkoptree_exec(main_start, "debug") }
    } else {
        return sub { walkoptree(main_root, "debug") }
    }
}

1;

__END__