# Debugger for Perl 5.00x; perl5db.pl patch level:
-$VERSION = 0.96;
+$VERSION = 0.9908;
$header = "perl5db.pl patch level $VERSION";
# Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich)
# This file is automatically included if you do perl -d.
# It's probably not useful to include this yourself.
#
-# Perl supplies the values for @line and %sub. It effectively inserts
-# a &DB'DB(<linenum>); in front of every place that can have a
+# Perl supplies the values for %sub. It effectively inserts
+# a &DB'DB(); in front of every place that can have a
# breakpoint. Instead of a subroutine call it calls &DB::sub with
# $DB::sub being the called subroutine. It also inserts a BEGIN
# {require 'perl5db.pl'} before the first line.
#
# After each `require'd file is compiled, but before it is executed, a
-# call to DB::postponed(*{"_<$filename"}) is emulated. Here the
+# call to DB::postponed($main::{'_<'.$filename}) is emulated. Here the
# $filename is the expanded name of the `require'd file (as found as
# value of %INC).
#
# if caller() is called from the package DB, it provides some
# additional data.
#
-# The array @{"_<$filename"} is the line-by-line contents of
+# The array @{$main::{'_<'.$filename} is the line-by-line contents of
# $filename.
#
-# The hash %{"_<$filename"} contains breakpoints and action (it is
+# The hash %{'_<'.$filename} contains breakpoints and action (it is
# keyed by line number), and individual entries are settable (as
# opposed to the whole hash). Only true/false is important to the
# interpreter, though the values used by perl5db.pl have the form
# "$break_condition\0$action". Values are magical in numeric context.
#
-# The scalar ${"_<$filename"} contains "_<$filename".
+# The scalar ${'_<'.$filename} contains "_<$filename".
#
# Note that no subroutine call is possible until &DB::sub is defined
-# (for subroutines defined outside this file). In fact the same is
+# (for subroutines defined outside of the package DB). In fact the same is
# true if $deep is not defined.
#
# $Log: perldb.pl,v $
# When restarting debugger breakpoints/actions persist.
# Buglet: When restarting debugger only one breakpoint/action per
# autoloaded function persists.
+# Changes: 0.97: NonStop will not stop in at_exit().
+# Option AutoTrace implemented.
+# Trace printed differently if frames are printed too.
+# new `inhibitExit' option.
+# printing of a very long statement interruptible.
+# Changes: 0.98: New command `m' for printing possible methods
+# 'l -' is a synonim for `-'.
+# Cosmetic bugs in printing stack trace.
+# `frame' & 8 to print "expanded args" in stack trace.
+# Can list/break in imported subs.
+# new `maxTraceLen' option.
+# frame & 4 and frame & 8 granted.
+# new command `m'
+# nonstoppable lines do not have `:' near the line number.
+# `b compile subname' implemented.
+# Will not use $` any more.
+# `-' behaves sane now.
+# Changes: 0.99: Completion for `f', `m'.
+# `m' will remove duplicate names instead of duplicate functions.
+# `b load' strips trailing whitespace.
+# completion ignores leading `|'; takes into account current package
+# when completing a subroutine name (same for `l').
####################################################################
$dumpvar::quoteHighBit,
$dumpvar::printUndef,
$dumpvar::globPrint,
- $readline::Tk_toloop,
$dumpvar::usageOnly,
@ARGS,
$Carp::CarpLevel,
$panic,
- $first_time,
+ $second_time,
) if 0;
# Command-line + PERLLIB:
@options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages
compactDump veryCompact quote HighBit undefPrint
- globPrint PrintRet UsageOnly frame
- TTY noTTY ReadLine NonStop LineInfo
+ globPrint PrintRet UsageOnly frame AutoTrace
+ TTY noTTY ReadLine NonStop LineInfo maxTraceLen
recallCommand ShellBang pager tkRunning
- signalLevel warnLevel dieLevel);
+ signalLevel warnLevel dieLevel inhibit_exit);
%optionVars = (
hashDepth => \$dumpvar::hashDepth,
HighBit => \$dumpvar::quoteHighBit,
undefPrint => \$dumpvar::printUndef,
globPrint => \$dumpvar::globPrint,
- tkRunning => \$readline::Tk_toloop,
UsageOnly => \$dumpvar::usageOnly,
- frame => \$frame,
+ frame => \$frame,
+ AutoTrace => \$trace,
+ inhibit_exit => \$inhibit_exit,
+ maxTraceLen => \$maxtrace,
);
%optionAction = (
signalLevel => \&signalLevel,
warnLevel => \&warnLevel,
dieLevel => \&dieLevel,
+ tkRunning => \&tkRunning,
);
%optionRequire = (
&pager(defined($ENV{PAGER}) ? $ENV{PAGER} : "|more") unless defined $pager;
&recallCommand("!") unless defined $prc;
&shellBang("!") unless defined $psh;
+$maxtrace = 400 unless defined $maxtrace;
if (-e "/dev/tty") {
$rcfile=".perldb";
%postponed = get_list("PERLDB_POSTPONE");
my @had_breakpoints= get_list("PERLDB_VISITED");
for (0 .. $#had_breakpoints) {
- %{$postponed_file{$had_breakpoints[$_]}} = get_list("PERLDB_FILE_$_");
+ my %pf = get_list("PERLDB_FILE_$_");
+ $postponed_file{$had_breakpoints[$_]} = \%pf if %pf;
}
my %opt = get_list("PERLDB_OPT");
my ($opt,$val);
############################################################ Subroutines
sub DB {
- unless ($first_time++) { # Do when-running init
- if ($runnonstop) { # Disable until signal
+ # _After_ the perl program is compiled, $single is set to 1:
+ if ($single and not $second_time++) {
+ if ($runnonstop) { # Disable until signal
for ($i=0; $i <= $#stack; ) {
$stack[$i++] &= ~1;
}
$single = 0;
- return;
+ # return; # Would not print trace!
}
}
+ $runnonstop = 0 if $single or $signal; # Disable it if interactive.
&save;
($package, $filename, $line) = caller;
$filename_ini = $filename;
$usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' .
"package $package;"; # this won't let them modify, alas
- local(*dbline) = "::_<$filename";
+ local(*dbline) = $main::{'_<' . $filename};
$max = $#dbline;
if (($stop,$action) = split(/\0/,$dbline{$line})) {
if ($stop eq '1') {
$dbline{$line} =~ s/;9($|\0)/$1/;
}
}
- if ($single || $trace || $signal) {
+ my $was_signal = $signal;
+ $signal = 0;
+ if ($single || $trace || $was_signal) {
$term || &setterm;
if ($emacs) {
$position = "\032\032$filename:$line:0\n";
$after = ($dbline[$line] =~ /\n$/ ? '' : "\n");
if (length($prefix) > 30) {
$position = "$prefix$line):\n$line:\t$dbline[$line]$after";
- print $LINEINFO $position;
$prefix = "";
$infix = ":\t";
} else {
$infix = "):\t";
$position = "$prefix$line$infix$dbline[$line]$after";
+ }
+ if ($frame) {
+ print $LINEINFO ' ' x $#stack, "$line:\t$dbline[$line]$after";
+ } else {
print $LINEINFO $position;
}
for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi
last if $dbline[$i] =~ /^\s*[\;\}\#\n]/;
+ last if $signal;
$after = ($dbline[$i] =~ /\n$/ ? '' : "\n");
$incr_pos = "$prefix$i$infix$dbline[$i]$after";
- print $LINEINFO $incr_pos;
$position .= $incr_pos;
+ if ($frame) {
+ print $LINEINFO ' ' x $#stack, "$i:\t$dbline[$i]$after";
+ } else {
+ print $LINEINFO $incr_pos;
+ }
}
}
}
$evalarg = $action, &eval if $action;
- if ($single || $signal) {
+ if ($single || $was_signal) {
local $level = $level + 1;
map {$evalarg = $_, &eval} @$pre;
print $OUT $#stack . " levels deep in subroutine calls!\n"
if $single & 4;
$start = $line;
+ $incr = -1; # for backward motion.
@typeahead = @$pretype, @typeahead;
CMD:
while (($term || &setterm),
$cmd .= &readline(" cont: ");
redo CMD;
};
- $cmd =~ /^q$/ && ($exiting = 1) && exit 0;
$cmd =~ /^$/ && ($cmd = $laststep);
push(@hist,$cmd) if length($cmd) > 1;
PIPE: {
($i) = split(/\s+/,$cmd);
eval "\$cmd =~ $alias{$i}", print $OUT $@ if $alias{$i};
+ $cmd =~ /^q$/ && ($exiting = 1) && exit 0;
$cmd =~ /^h$/ && do {
print $OUT $help;
next CMD; };
select ($savout);
next CMD; };
$cmd =~ s/^x\b/ / && do { # So that will be evaled
- $onetimeDump = 1; };
+ $onetimeDump = 'dump'; };
+ $cmd =~ s/^m\s+([\w:]+)\s*$/ / && do {
+ methods($1); next CMD};
+ $cmd =~ s/^m\b/ / && do { # So this will be evaled
+ $onetimeDump = 'methods'; };
$cmd =~ /^f\b\s*(.*)/ && do {
$file = $1;
+ $file =~ s/\s+$//;
if (!$file) {
print $OUT "The old f command is now the r command.\n";
print $OUT "The new f command switches filenames.\n";
}
if (!defined $main::{'_<' . $file}) {
if (($try) = grep(m#^_<.*$file#, keys %main::)) {{
- $file = substr($try,2);
- print "\n$file:\n";
+ $try = substr($try,2);
+ print $OUT "Choosing $try matching `$file':\n";
+ $file = $try;
}}
}
if (!defined $main::{'_<' . $file}) {
- print $OUT "There's no code here matching $file.\n";
+ print $OUT "No file matching `$file' is loaded.\n";
next CMD;
} elsif ($file ne $filename) {
- *dbline = "::_<$file";
+ *dbline = $main::{'_<' . $file};
$max = $#dbline;
$filename = $file;
$start = 1;
$cmd = "l";
- } };
+ } else {
+ print $OUT "Already in $file.\n";
+ next CMD;
+ }
+ };
+ $cmd =~ s/^l\s+-\s*$/-/;
$cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*)/ && do {
$subname = $1;
$subname =~ s/\'/::/;
- $subname = "main::".$subname unless $subname =~ /::/;
+ $subname = $package."::".$subname
+ unless $subname =~ /::/;
$subname = "main".$subname if substr($subname,0,2) eq "::";
- @pieces = split(/:/,$sub{$subname});
+ @pieces = split(/:/,find_sub($subname));
$subrange = pop @pieces;
$file = join(':', @pieces);
if ($file ne $filename) {
- *dbline = "::_<$file";
+ *dbline = $main::{'_<' . $file};
$max = $#dbline;
$filename = $file;
}
next CMD;
} };
$cmd =~ /^\.$/ && do {
+ $incr = -1; # for backward motion.
$start = $line;
$filename = $filename_ini;
- *dbline = "::_<$filename";
+ *dbline = $main::{'_<' . $filename};
$max = $#dbline;
print $LINEINFO $position;
next CMD };
#print $OUT 'l ' . $start . '-' . ($start + $incr);
$cmd = 'l ' . $start . '-' . ($start + $incr); };
$cmd =~ /^-$/ && do {
+ $start -= $incr + $window + 1;
+ $start = 1 if $start <= 0;
$incr = $window - 1;
- $cmd = 'l ' . ($start-$window*2) . '+'; };
+ $cmd = 'l ' . ($start) . '+'; };
$cmd =~ /^l$/ && do {
$incr = $window - 1;
$cmd = 'l ' . $start . '-' . ($start + $incr); };
$i = $2;
$i = $line if $i eq '.';
$i = 1 if $i < 1;
+ $incr = $end - $i;
if ($emacs) {
print $OUT "\032\032$filename:$i:0\n";
$i = $end;
$arrow = ($i==$line
and $filename eq $filename_ini)
? '==>'
- : ':' ;
+ : ($dbline[$i]+0 ? ':' : ' ') ;
$arrow .= 'b' if $stop;
$arrow .= 'a' if $action;
print $OUT "$i$arrow\t", $dbline[$i];
print $OUT "Deleting all breakpoints...\n";
my $file;
for $file (keys %had_breakpoints) {
- local *dbline = "::_<$file";
+ local *dbline = $main::{'_<' . $file};
my $max = $#dbline;
my $was;
$cmd =~ /^L$/ && do {
my $file;
for $file (keys %had_breakpoints) {
- local *dbline = "::_<$file";
+ local *dbline = $main::{'_<' . $file};
my $max = $#dbline;
my $was;
print $OUT "Postponed breakpoints in files:\n";
my ($file, $line);
for $file (keys %postponed_file) {
- my %db = %{$postponed_file{$file}};
- next unless keys %db;
+ my $db = $postponed_file{$file};
print $OUT " $file:\n";
- for $line (sort {$a <=> $b} keys %db) {
- print $OUT " $i:\n";
- my ($stop,$action) = split(/\0/, $db{$line});
+ for $line (sort {$a <=> $b} keys %$db) {
+ print $OUT " $line:\n";
+ my ($stop,$action) = split(/\0/, $$db{$line});
print $OUT " break if (", $stop, ")\n"
if $stop;
print $OUT " action: ", $action, "\n"
}
next CMD; };
$cmd =~ /^b\b\s*load\b\s*(.*)/ && do {
- my $file = $1;
+ my $file = $1; $file =~ s/\s+$//;
{
$break_on_load{$file} = 1;
$break_on_load{$::INC{$file}} = 1 if $::INC{$file};
$had_breakpoints{$file} = 1;
print $OUT "Will stop on load of `@{[join '\', `', sort keys %break_on_load]}'.\n";
next CMD; };
- $cmd =~ /^b\b\s*postpone\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
- my $cond = $2 || '1';
- my $subname = $1;
+ $cmd =~ /^b\b\s*(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
+ my $cond = $3 || '1';
+ my ($subname, $break) = ($2, $1 eq 'postpone');
$subname =~ s/\'/::/;
$subname = "${'package'}::" . $subname
unless $subname =~ /::/;
$subname = "main".$subname if substr($subname,0,2) eq "::";
- $postponed{$subname} = "break +0 if $cond";
+ $postponed{$subname} = $break
+ ? "break +0 if $cond" : "compile";
next CMD; };
$cmd =~ /^b\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
$subname = $1;
unless $subname =~ /::/;
$subname = "main".$subname if substr($subname,0,2) eq "::";
# Filename below can contain ':'
- ($file,$i) = ($sub{$subname} =~ /^(.*):(.*)$/);
+ ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
$i += 0;
if ($i) {
$filename = $file;
- *dbline = "::_<$filename";
+ *dbline = $main::{'_<' . $filename};
$had_breakpoints{$filename} = 1;
$max = $#dbline;
++$i while $dbline[$i] == 0 && $i < $max;
$cmd =~ /^A$/ && do {
my $file;
for $file (keys %had_breakpoints) {
- local *dbline = "::_<$file";
+ local *dbline = $main::{'_<' . $file};
my $max = $#dbline;
my $was;
end_report(), next CMD if $finished and $level <= 1;
$i = $1;
if ($i =~ /\D/) { # subroutine name
- ($file,$i) = ($sub{$i} =~ /^(.*):(.*)$/);
+ ($file,$i) = (find_sub($i) =~ /^(.*):(.*)$/);
$i += 0;
if ($i) {
$filename = $file;
- *dbline = "::_<$filename";
+ *dbline = $main::{'_<' . $filename};
$had_breakpoints{$filename}++;
$max = $#dbline;
++$i while $dbline[$i] == 0 && $i < $max;
my @hard;
for (0 .. $#had_breakpoints) {
my $file = $had_breakpoints[$_];
- *dbline = "::_<$file";
- next unless %dbline or %{$postponed_file{$file}};
+ *dbline = $main::{'_<' . $file};
+ next unless %dbline or $postponed_file{$file};
(push @hard, $file), next
if $file =~ /^\(eval \d+\)$/;
my @add;
@add = %{$postponed_file{$file}}
- if %{$postponed_file{$file}};
+ if $postponed_file{$file};
set_list("PERLDB_FILE_$_", %dbline, @add);
}
for (@hard) { # Yes, really-really...
# Find the subroutines in this eval
- *dbline = "::_<$_";
+ *dbline = $main::{'_<' . $_};
my ($quoted, $sub, %subs, $line) = quotemeta $_;
for $sub (keys %sub) {
next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/;
print $OUT "exec failed: $!\n";
last CMD; };
$cmd =~ /^T$/ && do {
- print_trace($OUT, 3); # skip DB print_trace dump_trace
+ print_trace($OUT, 1); # skip DB
next CMD; };
$cmd =~ /^\/(.*)$/ && do {
$inpat = $1;
$pat = $inpat;
}
$end = $start;
+ $incr = -1;
eval '
for (;;) {
++$start;
$pat = $inpat;
}
$end = $start;
+ $incr = -1;
eval '
for (;;) {
--$start;
$piped= "";
}
} # CMD:
+ $exiting = 1 unless defined $cmd;
map {$evalarg = $_; &eval} @$post;
} # if ($single || $signal)
($@, $!, $,, $/, $\, $^W) = @saved;
sub sub {
my ($al, $ret, @ret) = "";
- if ($sub =~ /::AUTOLOAD$/) {
- $al = " for $ {$` . '::AUTOLOAD'}";
+ if (length($sub) > 10 && substr($sub, -10, 10) eq '::AUTOLOAD') {
+ $al = " for $$sub";
}
- print $LINEINFO ' ' x $#stack, "entering $sub$al\n" if $frame;
push(@stack, $single);
$single &= 1;
$single |= 4 if $#stack == $deep;
+ ($frame & 4
+ ? ( (print $LINEINFO ' ' x ($#stack - 1), "in "),
+ # Why -1? But it works! :-(
+ print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
+ : print $LINEINFO ' ' x ($#stack - 1), "entering $sub$al\n") if $frame;
if (wantarray) {
@ret = &$sub;
$single |= pop(@stack);
- print ($OUT "list context return from $sub:\n"), dumpit( \@ret ),
- $doret = -2 if $doret eq $#stack;
- print $LINEINFO ' ' x $#stack, "exited $sub$al\n" if $frame > 1;
+ ($frame & 4
+ ? ( (print $LINEINFO ' ' x $#stack, "out "),
+ print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
+ : print $LINEINFO ' ' x $#stack, "exited $sub$al\n") if $frame & 2;
+ print ($OUT ($frame & 16 ? ' ' x $#stack : ""),
+ "list context return from $sub:\n"), dumpit( \@ret ),
+ $doret = -2 if $doret eq $#stack or $frame & 16;
@ret;
} else {
$ret = &$sub;
$single |= pop(@stack);
- print ($OUT "scalar context return from $sub: "), dumpit( $ret ),
- $doret = -2 if $doret eq $#stack;
- print $LINEINFO ' ' x $#stack, "exited $sub$al\n" if $frame > 1;
+ ($frame & 4
+ ? ( (print $LINEINFO ' ' x $#stack, "out "),
+ print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
+ : print $LINEINFO ' ' x $#stack, "exited $sub$al\n") if $frame & 2;
+ print ($OUT ($frame & 16 ? ' ' x $#stack : ""),
+ "scalar context return from $sub: "), dumpit( $ret ),
+ $doret = -2 if $doret eq $#stack or $frame & 16;
$ret;
}
}
$^D = $od;
}
my $at = $@;
+ local $saved[0]; # Preserve the old value of $@
eval "&DB::save";
if ($at) {
print $OUT $at;
- } elsif ($onetimeDump) {
+ } elsif ($onetimeDump eq 'dump') {
dumpit(\@res);
+ } elsif ($onetimeDump eq 'methods') {
+ methods($res[0]);
}
}
sub postponed_sub {
my $subname = shift;
- if ($postponed{$subname} =~ s/break\s([+-]?\d+)\s+if\s//) {
+ if ($postponed{$subname} =~ s/^break\s([+-]?\d+)\s+if\s//) {
my $offset = $1 || 0;
# Filename below can contain ':'
- my ($file,$i) = ($sub{$subname} =~ /^(.*):(\d+)-.*$/);
+ my ($file,$i) = (find_sub($subname) =~ /^(.*):(\d+)-.*$/);
$i += $offset;
if ($i) {
- local *dbline = "::_<$file";
+ local *dbline = $main::{'_<' . $file};
local $^W = 0; # != 0 is magical below
$had_breakpoints{$file}++;
my $max = $#dbline;
}
return;
}
- print $OUT "In postponed_sub for `$subname'.\n";
+ elsif ($postponed{$subname} eq 'compile') { $signal = 1 }
+ #print $OUT "In postponed_sub for `$subname'.\n";
}
sub postponed {
local *dbline = shift;
my $filename = $dbline;
$filename =~ s/^_<//;
- $signal = 1, print $OUT "'$filename' loaded...\n" if $break_on_load{$filename};
- return unless %{$postponed_file{$filename}};
+ $signal = 1, print $OUT "'$filename' loaded...\n"
+ if $break_on_load{$filename};
+ print $LINEINFO ' ' x $#stack, "Package $filename.\n" if $frame;
+ return unless $postponed_file{$filename};
$had_breakpoints{$filename}++;
#%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic
my $key;
for $key (keys %{$postponed_file{$filename}}) {
$dbline{$key} = $ {$postponed_file{$filename}}{$key};
}
- undef %{$postponed_file{$filename}};
+ delete $postponed_file{$filename};
}
sub dumpit {
select ($savout);
}
+# Tied method do not create a context, so may get wrong message:
+
sub print_trace {
my $fh = shift;
- my @sub = dump_trace(@_);
+ my @sub = dump_trace($_[0] + 1, $_[1]);
+ my $short = $_[2]; # Print short report, next one for sub name
+ my $s;
for ($i=0; $i <= $#sub; $i++) {
last if $signal;
local $" = ', ';
my $args = defined $sub[$i]{args}
? "(@{ $sub[$i]{args} })"
: '' ;
- $file = $sub[$i]{file} eq '-e' ? $sub[$i]{file} :
- "file `$sub[$i]{file}'";
- print $fh "$sub[$i]{context}$sub[$i]{sub}$args" .
- " called from $file" .
- " line $sub[$i]{line}\n";
+ $args = (substr $args, 0, $maxtrace - 3) . '...'
+ if length $args > $maxtrace;
+ my $file = $sub[$i]{file};
+ $file = $file eq '-e' ? $file : "file `$file'" unless $short;
+ $s = $sub[$i]{sub};
+ $s = (substr $s, 0, $maxtrace - 3) . '...' if length $s > $maxtrace;
+ if ($short) {
+ my $sub = @_ >= 4 ? $_[3] : $s;
+ print $fh "$sub[$i]{context}=$sub$args from $file:$sub[$i]{line}\n";
+ } else {
+ print $fh "$sub[$i]{context} = $s$args" .
+ " called from $file" .
+ " line $sub[$i]{line}\n";
+ }
}
}
sub dump_trace {
my $skip = shift;
+ my $count = shift || 1e9;
+ $skip++;
+ $count += $skip;
my ($p,$file,$line,$sub,$h,$args,$e,$r,@a,@sub,$context);
+ my $nothard = not $frame & 8;
+ local $frame = 0; # Do not want to trace this.
+ my $otrace = $trace;
+ $trace = 0;
for ($i = $skip;
- ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i);
+ $i < $count and ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i);
$i++) {
@a = ();
for $arg (@args) {
- $_ = "$arg";
- s/([\'\\])/\\$1/g;
- s/([^\0]*)/'$1'/
- unless /^(?: -?[\d.]+ | \*[\w:]* )$/x;
- s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg;
- s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg;
- push(@a, $_);
+ my $type;
+ if (not defined $arg) {
+ push @a, "undef";
+ } elsif ($nothard and tied $arg) {
+ push @a, "tied";
+ } elsif ($nothard and $type = ref $arg) {
+ push @a, "ref($type)";
+ } else {
+ local $_ = "$arg"; # Safe to stringify now - should not call f().
+ s/([\'\\])/\\$1/g;
+ s/(.*)/'$1'/s
+ unless /^(?: -?[\d.]+ | \*[\w:]* )$/x;
+ s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg;
+ s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg;
+ push(@a, $_);
+ }
}
- $context = $context ? '@ = ' : '$ = ';
+ $context = $context ? '@' : "\$";
$args = $h ? [@a] : undef;
$e =~ s/\n\s*\;\s*\Z// if $e;
- $e =~ s/[\\\']/\\$1/g if $e;
+ $e =~ s/([\\\'])/\\$1/g if $e;
if ($r) {
$sub = "require '$e'";
} elsif (defined $r) {
file => $file, line => $line});
last if $signal;
}
+ $trace = $otrace;
@sub;
}
} else {
$term = new Term::ReadLine 'perldb', $IN, $OUT;
- $readline::rl_basic_word_break_characters .= "[:"
- if defined $readline::rl_basic_word_break_characters
- and index($readline::rl_basic_word_break_characters, ":") == -1;
- $readline::rl_special_prefixes =
- $readline::rl_special_prefixes = '$@&%';
- $readline::rl_completer_word_break_characters =
- $readline::rl_completer_word_break_characters . '$@&%';
- $readline::rl_completion_function =
- $readline::rl_completion_function = \&db_complete;
+ $rl_attribs = $term->Attribs;
+ $rl_attribs->{basic_word_break_characters} .= '-:+/*,[])}'
+ if defined $rl_attribs->{basic_word_break_characters}
+ and index($rl_attribs->{basic_word_break_characters}, ":") == -1;
+ $rl_attribs->{special_prefixes} = '$@&%';
+ $rl_attribs->{completer_word_break_characters} .= '$@&%';
+ $rl_attribs->{completion_function} = \&db_complete;
}
$LINEINFO = $OUT unless defined $LINEINFO;
$lineinfo = $console unless defined $lineinfo;
$rl;
}
+sub tkRunning {
+ if ($ {$term->Features}{tkRunning}) {
+ return $term->tkRunning(@_);
+ } else {
+ print $OUT "tkRunning not supported by current ReadLine package.\n";
+ 0;
+ }
+}
+
sub NonStop {
if ($term) {
&warn("Too late to set up NonStop mode!\n") if @_;
- List previous window of lines.
w [line] List window around line.
. Return to the executed line.
-f filename Switch to viewing filename.
+f filename Switch to viewing filename. Must be loaded.
/pattern/ Search forwards for pattern; final / is optional.
?pattern? Search backwards for pattern; final ? is optional.
-L List all breakpoints and actions for the current file.
+L List all breakpoints and actions.
S [[!]pattern] List subroutine names [not] matching pattern.
t Toggle trace mode.
t expr Trace through execution of expr.
b postpone subname [condition]
Set breakpoint at first line of subroutine after
it is compiled.
+b compile subname
+ Stop after the subroutine is compiled.
d [line] Delete the breakpoint for line.
D Delete all breakpoints.
a [line] command
Use ~pattern and !pattern for positive and negative regexps.
X [vars] Same as \"V currentpackage [vars]\".
x expr Evals expression in array context, dumps the result.
+m expr Evals expression in array context, prints methods callable
+ on the first element of the result.
+m class Prints methods callable via the given class.
O [opt[=val]] [opt\"val\"] [opt?]...
Set or query values of options. val defaults to 1. opt can
be abbreviated. Several options can be listed.
recallCommand, ShellBang: chars used to recall command or spawn shell;
pager: program for output of \"|cmd\";
+ tkRunning: run Tk while prompting (with ReadLine);
+ signalLevel warnLevel dieLevel: level of verbosity;
+ inhibit_exit Allows stepping off the end of the script.
The following options affect what happens with V, X, and x commands:
arrayDepth, hashDepth: print only first N elements ('' for all);
compactDump, veryCompact: change style of array and hash dump;
DumpDBFiles: dump arrays holding debugged files;
DumpPackages: dump symbol tables of packages;
quote, HighBit, undefPrint: change style of string dump;
- tkRunning: run Tk while prompting (with ReadLine);
- signalLevel warnLevel dieLevel: level of verbosity;
Option PrintRet affects printing of return value after r command,
frame affects printing messages on entry and exit from subroutines.
+ AutoTrace affects printing messages on every possible breaking point.
+ maxTraceLen gives maximal length of evals/args listed in stack trace.
During startup options are initialized from \$ENV{PERLDB_OPTS}.
You can put additional initialization options TTY, noTTY,
ReadLine, and NonStop there.
v Show versions of loaded modules.
R Pure-man-restart of debugger, some of debugger state
and command-line options may be lost.
+ Currently the following setting are preserved:
+ history, breakpoints and actions, debugger Options
+ and the following command-line options: -w, -I, -e.
h [db_command] Get help [on a specific debugger command], enter |h to page.
h h Summary of debugger commands.
q or ^D Quit. Set \$DB::finished to 0 to debug global destruction.
|[|]dbcmd Send output to pager $psh\[$psh\] syscmd Run cmd in a subprocess
q or ^D Quit R Attempt a restart
Data Examination: expr Execute perl code, also see: s,n,t expr
- x expr Evals expression in array context, dumps the result.
+ x|m expr Evals expr in array context, dumps the result or lists methods.
p expr Print expression (uses script's current package).
S [[!]pat] List subroutine names [not] matching pattern
V [Pk [Vars]] List Variables in Package. Vars can be ~pattern or !pattern.
local $doret = -2;
$SIG{'ABRT'} = 'DEFAULT';
kill 'ABRT', $$ if $panic++;
- print $DB::OUT "Got $_[0]!\n"; # in the case cannot continue
- local $SIG{__WARN__} = '';
- require Carp;
- local $Carp::CarpLevel = 2; # mydie + confess
- &warn(Carp::longmess("Signal @_"));
+ if (defined &Carp::longmess) {
+ local $SIG{__WARN__} = '';
+ local $Carp::CarpLevel = 2; # mydie + confess
+ &warn(Carp::longmess("Signal @_"));
+ }
+ else {
+ print $DB::OUT "Got signal @_\n";
+ }
kill 'ABRT', $$;
}
$signalLevel;
}
+sub find_sub {
+ my $subr = shift;
+ return unless defined &$subr;
+ $sub{$subr} or do {
+ $subr = \&$subr; # Hard reference
+ my $s;
+ for (keys %sub) {
+ $s = $_, last if $subr eq \&$_;
+ }
+ $sub{$s} if $s;
+ }
+}
+
+sub methods {
+ my $class = shift;
+ $class = ref $class if ref $class;
+ local %seen;
+ local %packs;
+ methods_via($class, '', 1);
+ methods_via('UNIVERSAL', 'UNIVERSAL', 0);
+}
+
+sub methods_via {
+ my $class = shift;
+ return if $packs{$class}++;
+ my $prefix = shift;
+ my $prepend = $prefix ? "via $prefix: " : '';
+ my $name;
+ for $name (grep {defined &{$ {"$ {class}::"}{$_}}}
+ sort keys %{"$ {class}::"}) {
+ next if $seen{ $name }++;
+ print $DB::OUT "$prepend$name\n";
+ }
+ return unless shift; # Recurse?
+ for $name (@{"$ {class}::ISA"}) {
+ $prepend = $prefix ? $prefix . " -> $name" : $name;
+ methods_via($name, $prepend, 1);
+ }
+}
+
# The following BEGIN is very handy if debugger goes havoc, debugging debugger?
BEGIN { # This does not compile, alas.
#use Carp; # This did break, left for debuggin
sub db_complete {
+ # Specific code for b c l V m f O, &blah, $blah, @blah, %blah
my($text, $line, $start) = @_;
- my ($itext, $prefix, $pack) = $text;
+ my ($itext, $search, $prefix, $pack) =
+ ($text, "^\Q$ {'package'}::\E([^:]+)\$");
+ return sort grep /^\Q$text/, (keys %sub), qw(postpone load compile), # subroutines
+ (map { /$search/ ? ($1) : () } keys %sub)
+ if (substr $line, 0, $start) =~ /^\|*[blc]\s+((postpone|compile)\s+)?$/;
+ return sort grep /^\Q$text/, values %INC # files
+ if (substr $line, 0, $start) =~ /^\|*b\s+load\s+$/;
+ return sort map {($_, db_complete($_ . "::", "V ", 2))}
+ grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # top-packages
+ if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ and $text =~ /^\w*$/;
+ return sort map {($_, db_complete($_ . "::", "V ", 2))}
+ grep !/^main::/,
+ grep /^\Q$text/, map { /^(.*)::$/ ? ($prefix . "::$1") : ()} keys %{$prefix . '::'}
+ # packages
+ if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/
+ and $text =~ /^(.*[^:])::?(\w*)$/ and $prefix = $1;
+ if ( $line =~ /^\|*f\s+(.*)/ ) { # Loaded files
+ # We may want to complete to (eval 9), so $text may be wrong
+ $prefix = length($1) - length($text);
+ $text = $1;
+ return sort
+ map {substr $_, 2 + $prefix} grep /^_<\Q$text/, (keys %main::), $0
+ }
if ((substr $text, 0, 1) eq '&') { # subroutines
$text = substr $text, 1;
$prefix = "&";
- return map "$prefix$_", grep /^\Q$text/, keys %sub;
+ return sort map "$prefix$_",
+ grep /^\Q$text/,
+ (keys %sub),
+ (map { /$search/ ? ($1) : () }
+ keys %sub);
}
if ($text =~ /^[\$@%](.*)::(.*)/) { # symbols in a package
$pack = ($1 eq 'main' ? '' : $1) . '::';
if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
return db_complete($out[0], $line, $start);
}
- return @out;
+ return sort @out;
}
if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main)
$pack = ($package eq 'main' ? '' : $package) . '::';
if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
return db_complete($out[0], $line, $start);
}
- return @out;
+ return sort @out;
}
- return grep /^\Q$text/, (keys %sub), qw(postpone load) # subroutines
- if (substr $line, 0, $start) =~ /^[bl]\s+(postpone\s+)?$/;
- return grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # packages
- if (substr $line, 0, $start) =~ /^V\s+$/;
- if ((substr $line, 0, $start) =~ /^O\b.*\s$/) { # Options after a space
+ if ((substr $line, 0, $start) =~ /^\|*O\b.*\s$/) { # Options after a space
my @out = grep /^\Q$text/, @options;
my $val = option_val($out[0], undef);
my $out = '? ';
$out = "=$val ";
}
# Default to value if one completion, to question if many
- $readline::rl_completer_terminator_character
- = $readline::rl_completer_terminator_character
- = (@out == 1 ? $out : '? ');
- return @out;
+ $rl_attribs->{completer_terminator_character} = (@out == 1 ? $out : '? ');
+ return sort @out;
}
- return &readline::rl_filename_list($text); # filenames
+ return $term->filename_list($text); # filenames
}
sub end_report { print $OUT "Use `q' to quit and `R' to restart. `h q' for details.\n" }
END {
$finished = $inhibit_exit; # So that some keys may be disabled.
- $DB::single = !$exiting; # Do not trace destructors on exit
- DB::fake::at_exit() unless $exiting;
+ # Do not stop in at_exit() and destructors on exit:
+ $DB::single = !$exiting && !$runnonstop;
+ DB::fake::at_exit() unless $exiting or $runnonstop;
}
package DB::fake;
"Debuggee terminated. Use `q' to quit and `R' to restart.";
}
+package DB; # Do not trace this 1; below!
+
1;
projects / p5sagit/p5-mst-13.2.git / blobdiff