# Debugger for Perl 5.00x; perl5db.pl patch level:
-$header = 'perl5db.pl patch level 0.94';
+$VERSION = 0.95;
+$header = "perl5db.pl patch level $VERSION";
# Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich)
# Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl
# information into db.out. (If you interrupt it, you would better
# reset LineInfo to something "interactive"!)
#
+# Changes: 0.95: v command shows versions.
+
+##################################################################
+# Changelog:
+
+# A lot of things changed after 0.94. First of all, core now informs
+# debugger about entry into XSUBs, overloaded operators, tied operations,
+# BEGIN and END. Handy with `O f=2'.
+
+# This can make debugger a little bit too verbose, please be patient
+# and report your problems promptly.
+
+# Now the option frame has 3 values: 0,1,2.
+
+# Note that if DESTROY returns a reference to the object (or object),
+# the deletion of data may be postponed until the next function call,
+# due to the need to examine the return value.
+
+####################################################################
# Needed for the statement after exec():
$trace = $signal = $single = 0; # Uninitialized warning suppression
# (local $^W cannot help - other packages!).
+$doret = -2;
+$frame = 0;
@stack = (0);
$option{PrintRet} = 1;
# These guys may be defined in $ENV{PERL5DB} :
$rl = 1 unless defined $rl;
+$warnLevel = 1 unless defined $warnLevel;
+$dieLevel = 1 unless defined $dieLevel;
+$signalLevel = 1 unless defined $signalLevel;
warnLevel($warnLevel);
dieLevel($dieLevel);
signalLevel($signalLevel);
}
# Around a bug:
- if (defined $ENV{OS2_SHELL} and $emacs) { # In OS/2
+ if (defined $ENV{OS2_SHELL} and ($emacs or $ENV{WINDOWID})) { # In OS/2
$console = undef;
}
# EOE
}
&save;
- if ($doret) {
- $doret = 0;
- if ($option{PrintRet}) {
- print $OUT "$retctx context return from $lastsub:",
- ($retctx eq 'list') ? "\n" : " " ;
- dumpit( ($retctx eq 'list') ? \@ret : $ret );
- }
- }
($package, $filename, $line) = caller;
$filename_ini = $filename;
$usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' .
}
}
next CMD; };
+ $cmd =~ /^v$/ && do {
+ list_versions(); next CMD};
$cmd =~ s/^X\b/V $package/;
$cmd =~ /^V$/ && do {
$cmd = "V $package"; };
do 'dumpvar.pl' unless defined &main::dumpvar;
if (defined &main::dumpvar) {
local $frame = 0;
+ local $doret = -2;
&main::dumpvar($packname,@vars);
} else {
print $OUT "dumpvar.pl not available.\n";
last CMD; };
$cmd =~ /^r$/ && do {
$stack[$#stack] |= 1;
- $doret = 1;
+ $doret = $option{PrintRet} ? $#stack - 1 : -2;
last CMD; };
$cmd =~ /^R$/ && do {
print $OUT "Warning: a lot of settings and command-line options may be lost!\n";
$cmd = $hist[$i] . "\n";
print $OUT $cmd;
redo CMD; };
- $cmd =~ /^$sh$sh\s*/ && do {
- &system($');
+ $cmd =~ /^$sh$sh\s*([\x00-\xff]]*)/ && do {
+ &system($1);
next CMD; };
$cmd =~ /^$rc([^$rc].*)$/ && do {
$pat = "^$1";
$cmd =~ /^$sh$/ && do {
&system($ENV{SHELL}||"/bin/sh");
next CMD; };
- $cmd =~ /^$sh\s*/ && do {
- &system($ENV{SHELL}||"/bin/sh","-c",$');
+ $cmd =~ /^$sh\s*([\x00-\xff]*)/ && do {
+ &system($ENV{SHELL}||"/bin/sh","-c",$1);
next CMD; };
$cmd =~ /^H\b\s*(-(\d+))?/ && do {
$end = $2?($#hist-$2):0;
# BEGIN {warn 4}
sub sub {
- print $LINEINFO ' ' x $#stack, "entering $sub\n" if $frame;
+ my ($al, $ret, @ret) = "";
+ if ($sub =~ /::AUTOLOAD$/) {
+ $al = " for $ {$` . '::AUTOLOAD'}";
+ }
+ print $LINEINFO ' ' x $#stack, "entering $sub$al\n" if $frame;
push(@stack, $single);
$single &= 1;
$single |= 4 if $#stack == $deep;
if (wantarray) {
@ret = &$sub;
$single |= pop(@stack);
- $retctx = "list";
- $lastsub = $sub;
-print $LINEINFO ' ' x $#stack, "exited $sub\n" if $frame;
+ print ($OUT "list context return from $sub:\n"), dumpit( \@ret ),
+ $doret = -2 if $doret eq $#stack;
+ print $LINEINFO ' ' x $#stack, "exited $sub$al\n" if $frame > 1;
@ret;
} else {
$ret = &$sub;
$single |= pop(@stack);
- $retctx = "scalar";
- $lastsub = $sub;
-print $LINEINFO ' ' x $#stack, "exited $sub\n" if $frame;
+ print ($OUT "scalar context return from $sub: "), dumpit( $ret ),
+ $doret = -2 if $doret eq $#stack;
+ print $LINEINFO ' ' x $#stack, "exited $sub$al\n" if $frame > 1;
$ret;
}
}
sub dumpit {
local ($savout) = select($OUT);
- do 'dumpvar.pl' unless defined &main::dumpValue;
+ my $osingle = $single;
+ my $otrace = $trace;
+ $single = $trace = 0;
+ local $frame = 0;
+ local $doret = -2;
+ unless (defined &main::dumpValue) {
+ do 'dumpvar.pl';
+ }
if (defined &main::dumpValue) {
- local $frame = 0;
&main::dumpValue(shift);
} else {
print $OUT "dumpvar.pl not available.\n";
}
+ $single = $osingle;
+ $trace = $otrace;
select ($savout);
}
sub setterm {
local $frame = 0;
- eval "require Term::ReadLine;" or die $@;
+ local $doret = -2;
+ local @stack = @stack; # Prevent growth by failing `use'.
+ eval { require Term::ReadLine } or die $@;
if ($notty) {
if ($tty) {
open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!";
return $got;
}
local $frame = 0;
+ local $doret = -2;
$term->readline(@_);
}
} else {
$val = $option{$opt};
}
- $val =~ s/[\\\']/\\$&/g;
+ $val =~ s/([\\\'])/\\$1/g;
printf $OUT "%20s = '%s'\n", $opt, $val;
}
print $OUT "Unknown option `$opt'\n" unless $matches;
print $OUT "Ambiguous option `$opt'\n" if $matches > 1;
$option{$option} = $val if $matches == 1 and defined $val;
- eval "local \$frame = 0; require '$optionRequire{$option}'"
+ eval "local \$frame = 0; local \$doret = -2;
+ require '$optionRequire{$option}'"
if $matches == 1 and defined $optionRequire{$option} and defined $val;
$ {$optionVars{$option}} = $val
if $matches == 1
for $i (0 .. $#list) {
$val = $list[$i];
$val =~ s/\\/\\\\/g;
- $val =~ s/[\0-\37\177\200-\377]/"\\0x" . unpack('H2',$&)/eg;
+ $val =~ s/([\0-\37\177\200-\377])/"\\0x" . unpack('H2',$1)/eg;
$ENV{"$ {stem}_$i"} = $val;
}
}
$lineinfo;
}
+sub list_versions {
+ my %version;
+ my $file;
+ for (keys %INC) {
+ $file = $_;
+ s,\.p[lm]$,,i ;
+ s,/,::,g ;
+ s/^perl5db$/DB/;
+ if (defined $ { $_ . '::VERSION' }) {
+ $version{$file} = "$ { $_ . '::VERSION' } from ";
+ }
+ $version{$file} .= $INC{$file};
+ }
+ do 'dumpvar.pl' unless defined &main::dumpValue;
+ if (defined &main::dumpValue) {
+ local $frame = 0;
+ &main::dumpValue(\%version);
+ } else {
+ print $OUT "dumpvar.pl not available.\n";
+ }
+}
+
sub sethelp {
$help = "
T Stack trace.
||dbcmd Same as |dbcmd but DB::OUT is temporarilly select()ed as well.
\= [alias value] Define a command alias, or list current aliases.
command Execute as a perl statement in current package.
+v Show versions of loaded modules.
R Pure-man-restart of debugger, debugger state and command-line
options are lost.
h [db_command] Get help [on a specific debugger command], enter |h to page.
- or . List previous/current line s [expr] Single step [in expr]
w [line] List around line n [expr] Next, steps over subs
f filename View source in file <CR> Repeat last n or s
- /pattern/ Search forward r Return from subroutine
- ?pattern? Search backward c [line] Continue until line
+ /pattern/ ?patt? Search forw/backw r Return from subroutine
+ v Show versions of modules c [line] Continue until line
Debugger controls: L List break pts & actions
O [...] Set debugger options t [expr] Toggle trace [trace expr]
< command Command for before prompt b [ln] [c] Set breakpoint
sub diesignal {
local $frame = 0;
+ local $doret = -2;
$SIG{'ABRT'} = DEFAULT;
kill 'ABRT', $$ if $panic++;
print $DB::OUT "Got $_[0]!\n"; # in the case cannot continue
sub dbwarn {
local $frame = 0;
+ local $doret = -2;
local $SIG{__WARN__} = '';
require Carp;
#&warn("Entering dbwarn\n");
sub dbdie {
local $frame = 0;
+ local $doret = -2;
local $SIG{__DIE__} = '';
local $SIG{__WARN__} = '';
my $i = 0; my $ineval = 0; my $sub;
$window = 10;
$preview = 3;
$sub = '';
- #$SIG{__WARN__} = "DB::dbwarn";
- #$SIG{__DIE__} = 'DB::dbdie';
- #$SIG{SEGV} = "DB::diesignal";
- #$SIG{BUS} = "DB::diesignal";
$SIG{INT} = "DB::catch";
- #$SIG{FPE} = "DB::catch";
- #warn "SIGFPE installed";
- $warnLevel = 1 unless defined $warnLevel;
- $dieLevel = 1 unless defined $dieLevel;
- $signalLevel = 1 unless defined $signalLevel;
+ # This may be enabled to debug debugger:
+ #$warnLevel = 1 unless defined $warnLevel;
+ #$dieLevel = 1 unless defined $dieLevel;
+ #$signalLevel = 1 unless defined $signalLevel;
$db_stop = 0; # Compiler warning
$db_stop = 1 << 30;
projects / p5sagit/p5-mst-13.2.git / commitdiff