# Debugger for Perl 5.00x; perl5db.pl patch level:
-$VERSION = 0.95;
-$header = "perl5db.pl patch level $VERSION";
+$VERSION = 1.00;
+$header = "perl5db.pl version $VERSION";
# Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich)
# Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl
# 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
# $DB::sub being the called subroutine. It also inserts a BEGIN
# {require 'perl5db.pl'} before the first line.
#
+# After each `require'd file is compiled, but before it is executed, a
+# call to DB::postponed($main::{'_<'.$filename}) is emulated. Here the
+# $filename is the expanded name of the `require'd file (as found as
+# value of %INC).
+#
+# Additional services from Perl interpreter:
+#
+# if caller() is called from the package DB, it provides some
+# additional data.
+#
+# The array @{$main::{'_<'.$filename} is the line-by-line contents of
+# $filename.
+#
+# The hash %{'_<'.$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".
+#
# 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 $
# information into db.out. (If you interrupt it, you would better
# reset LineInfo to something "interactive"!)
#
-# Changes: 0.95: v command shows versions.
-
##################################################################
# Changelog:
# the deletion of data may be postponed until the next function call,
# due to the need to examine the return value.
+# Changes: 0.95: `v' command shows versions.
+# Changes: 0.96: `v' command shows version of readline.
+# primitive completion works (dynamic variables, subs for `b' and `l',
+# options). Can `p %var'
+# Better help (`h <' now works). New commands <<, >>, {, {{.
+# {dump|print}_trace() coded (to be able to do it from <<cmd).
+# `c sub' documented.
+# At last enough magic combined to stop after the end of debuggee.
+# !! should work now (thanks to Emacs bracket matching an extra
+# `]' in a regexp is caught).
+# `L', `D' and `A' span files now (as documented).
+# Breakpoints in `require'd code are possible (used in `R').
+# Some additional words on internal work of debugger.
+# `b load filename' implemented.
+# `b postpone subr' implemented.
+# now only `q' exits debugger (overwriteable on $inhibit_exit).
+# 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').
+
####################################################################
# Needed for the statement after exec():
$dumpvar::quoteHighBit,
$dumpvar::printUndef,
$dumpvar::globPrint,
- $readline::Tk_toloop,
$dumpvar::usageOnly,
@ARGS,
$Carp::CarpLevel,
$panic,
- $first_time,
+ $second_time,
) if 0;
# Command-line + PERLLIB:
$trace = $signal = $single = 0; # Uninitialized warning suppression
# (local $^W cannot help - other packages!).
-$doret = -2;
-$frame = 0;
-@stack = (0);
-
-$option{PrintRet} = 1;
+$inhibit_exit = $option{PrintRet} = 1;
@options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages
compactDump veryCompact quote HighBit undefPrint
- globPrint PrintRet UsageOnly frame
- TTY noTTY ReadLine NonStop LineInfo
- recallCommand ShellBang pager tkRunning
- signalLevel warnLevel dieLevel);
+ globPrint PrintRet UsageOnly frame AutoTrace
+ TTY noTTY ReadLine NonStop LineInfo maxTraceLen
+ recallCommand ShellBang pager tkRunning ornaments
+ 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,
+ ornaments => \&ornaments,
);
%optionRequire = (
$warnLevel = 1 unless defined $warnLevel;
$dieLevel = 1 unless defined $dieLevel;
$signalLevel = 1 unless defined $signalLevel;
+$pre = [] unless defined $pre;
+$post = [] unless defined $post;
+$pretype = [] unless defined $pretype;
warnLevel($warnLevel);
dieLevel($dieLevel);
signalLevel($signalLevel);
&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";
delete $ENV{PERLDB_RESTART};
# $restart = 1;
@hist = get_list('PERLDB_HIST');
- my @visited = get_list("PERLDB_VISITED");
- for (0 .. $#visited) {
- %{$postponed{$visited[$_]}} = get_list("PERLDB_FILE_$_");
+ %break_on_load = get_list("PERLDB_ON_LOAD");
+ %postponed = get_list("PERLDB_POSTPONE");
+ my @had_breakpoints= get_list("PERLDB_VISITED");
+ for (0 .. $#had_breakpoints) {
+ my %pf = get_list("PERLDB_FILE_$_");
+ $postponed_file{$had_breakpoints[$_]} = \%pf if %pf;
}
my %opt = get_list("PERLDB_OPT");
my ($opt,$val);
}
@INC = get_list("PERLDB_INC");
@ini_INC = @INC;
+ $pretype = [get_list("PERLDB_PRETYPE")];
+ $pre = [get_list("PERLDB_PRE")];
+ $post = [get_list("PERLDB_POST")];
+ @typeahead = get_list("PERLDB_TYPEAHEAD", @typeahead);
}
if ($notty) {
if (-e "/dev/tty") {
$console = "/dev/tty";
- } elsif (-e "con") {
+ } elsif (-e "con" or $^O eq 'MSWin32') {
$console = "con";
} else {
$console = "sys\$command";
&afterinit();
}
+$I_m_init = 1;
+
############################################################ 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!
}
- # Define a subroutine in which we will stop
-# eval <<'EOE';
-# sub at_end::db {"Debuggee terminating";}
-# END {
-# $DB::step = 1;
-# print $OUT "Debuggee terminating.\n";
-# &at_end::db;}
-# EOE
}
+ $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";
- install_breakpoints($filename) unless $visited{$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;
- $evalarg = $pre, &eval if $pre;
+ foreach $evalarg (@$pre) {
+ &eval;
+ }
print $OUT $#stack . " levels deep in subroutine calls!\n"
if $single & 4;
$start = $line;
+ $incr = -1; # for backward motion.
+ @typeahead = @$pretype, @typeahead;
CMD:
while (($term || &setterm),
defined ($cmd=&readline(" DB" . ('<' x $level) .
($#hist+1) . ('>' x $level) .
" "))) {
- #{ # <-- Do we know what this brace is for?
$single = 0;
$signal = 0;
$cmd =~ s/\\$/\n/ && do {
$cmd .= &readline(" cont: ");
redo CMD;
};
- $cmd =~ /^q$/ && 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; };
next CMD; };
$cmd =~ /^h\s+(\S)$/ && do {
my $asked = "\Q$1";
- if ($help =~ /^($asked([\s\S]*?)\n)(\Z|[^\s$asked])/m) {
+ if ($help =~ /^$asked/m) {
+ while ($help =~ /^($asked([\s\S]*?)\n)(\Z|[^\s$asked])/mg) {
print $OUT $1;
+ }
} else {
print $OUT "`$asked' is not a debugger command.\n";
}
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";
- $visited{$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";
- $visited{$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];
$start = $max if $start > $max;
next CMD; };
$cmd =~ /^D$/ && do {
- print $OUT "Deleting all breakpoints...\n";
+ print $OUT "Deleting all breakpoints...\n";
+ my $file;
+ for $file (keys %had_breakpoints) {
+ local *dbline = $main::{'_<' . $file};
+ my $max = $#dbline;
+ my $was;
+
for ($i = 1; $i <= $max ; $i++) {
if (defined $dbline{$i}) {
$dbline{$i} =~ s/^[^\0]+//;
}
}
}
- next CMD; };
+ }
+ undef %postponed;
+ undef %postponed_file;
+ undef %break_on_load;
+ undef %had_breakpoints;
+ next CMD; };
$cmd =~ /^L$/ && do {
+ my $file;
+ for $file (keys %had_breakpoints) {
+ local *dbline = $main::{'_<' . $file};
+ my $max = $#dbline;
+ my $was;
+
for ($i = 1; $i <= $max; $i++) {
if (defined $dbline{$i}) {
- print $OUT "$i:\t", $dbline[$i];
+ print "$file:\n" unless $was++;
+ print $OUT " $i:\t", $dbline[$i];
($stop,$action) = split(/\0/, $dbline{$i});
- print $OUT " break if (", $stop, ")\n"
+ print $OUT " break if (", $stop, ")\n"
if $stop;
- print $OUT " action: ", $action, "\n"
+ print $OUT " action: ", $action, "\n"
if $action;
last if $signal;
}
}
+ }
+ if (%postponed) {
+ print $OUT "Postponed breakpoints in subroutines:\n";
+ my $subname;
+ for $subname (keys %postponed) {
+ print $OUT " $subname\t$postponed{$subname}\n";
+ last if $signal;
+ }
+ }
+ my @have = map { # Combined keys
+ keys %{$postponed_file{$_}}
+ } keys %postponed_file;
+ if (@have) {
+ print $OUT "Postponed breakpoints in files:\n";
+ my ($file, $line);
+ for $file (keys %postponed_file) {
+ my $db = $postponed_file{$file};
+ print $OUT " $file:\n";
+ 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"
+ if $action;
+ last if $signal;
+ }
+ last if $signal;
+ }
+ }
+ if (%break_on_load) {
+ print $OUT "Breakpoints on load:\n";
+ my $file;
+ for $file (keys %break_on_load) {
+ print $OUT " $file\n";
+ last if $signal;
+ }
+ }
+ next CMD; };
+ $cmd =~ /^b\b\s*load\b\s*(.*)/ && do {
+ my $file = $1; $file =~ s/\s+$//;
+ {
+ $break_on_load{$file} = 1;
+ $break_on_load{$::INC{$file}} = 1 if $::INC{$file};
+ $file .= '.pm', redo unless $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|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
+ ? "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";
- $visited{$filename}++;
+ *dbline = $main::{'_<' . $filename};
+ $had_breakpoints{$filename} = 1;
$max = $#dbline;
++$i while $dbline[$i] == 0 && $i < $max;
$dbline{$i} =~ s/^[^\0]*/$cond/;
if ($dbline[$i] == 0) {
print $OUT "Line $i not breakable.\n";
} else {
+ $had_breakpoints{$filename} = 1;
$dbline{$i} =~ s/^[^\0]*/$cond/;
}
next CMD; };
delete $dbline{$i} if $dbline{$i} eq '';
next CMD; };
$cmd =~ /^A$/ && do {
+ my $file;
+ for $file (keys %had_breakpoints) {
+ local *dbline = $main::{'_<' . $file};
+ my $max = $#dbline;
+ my $was;
+
for ($i = 1; $i <= $max ; $i++) {
if (defined $dbline{$i}) {
$dbline{$i} =~ s/\0[^\0]*//;
delete $dbline{$i} if $dbline{$i} eq '';
}
}
- next CMD; };
+ }
+ next CMD; };
$cmd =~ /^O\s*$/ && do {
for (@options) {
&dump_option($_);
$cmd =~ /^O\s*(\S.*)/ && do {
parse_options($1);
next CMD; };
+ $cmd =~ /^\<\<\s*(.*)/ && do { # \<\< for CPerl sake: not HERE
+ push @$pre, action($1);
+ next CMD; };
+ $cmd =~ /^>>\s*(.*)/ && do {
+ push @$post, action($1);
+ next CMD; };
$cmd =~ /^<\s*(.*)/ && do {
- $pre = action($1);
+ $pre = [], next CMD unless $1;
+ $pre = [action($1)];
next CMD; };
$cmd =~ /^>\s*(.*)/ && do {
- $post = action($1);
+ $post = [], next CMD unless $1;
+ $post = [action($1)];
+ next CMD; };
+ $cmd =~ /^\{\{\s*(.*)/ && do {
+ push @$pretype, $1;
+ next CMD; };
+ $cmd =~ /^\{\s*(.*)/ && do {
+ $pretype = [], next CMD unless $1;
+ $pretype = [$1];
next CMD; };
$cmd =~ /^a\b\s*(\d+)(\s+(.*))?/ && do {
$i = $1; $j = $3;
}
next CMD; };
$cmd =~ /^n$/ && do {
+ end_report(), next CMD if $finished and $level <= 1;
$single = 2;
$laststep = $cmd;
last CMD; };
$cmd =~ /^s$/ && do {
+ end_report(), next CMD if $finished and $level <= 1;
$single = 1;
$laststep = $cmd;
last CMD; };
$cmd =~ /^c\b\s*([\w:]*)\s*$/ && do {
+ 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";
- $visited{$filename}++;
+ *dbline = $main::{'_<' . $filename};
+ $had_breakpoints{$filename}++;
$max = $#dbline;
++$i while $dbline[$i] == 0 && $i < $max;
} else {
}
last CMD; };
$cmd =~ /^r$/ && do {
+ end_report(), next CMD if $finished and $level <= 1;
$stack[$#stack] |= 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";
+ print $OUT "Warning: some settings and command-line options may be lost!\n";
my (@script, @flags, $cl);
push @flags, '-w' if $ini_warn;
# Put all the old includes at the start to get
set_list("PERLDB_HIST",
$term->Features->{getHistory}
? $term->GetHistory : @hist);
- my @visited = keys %visited;
- set_list("PERLDB_VISITED", @visited);
+ my @had_breakpoints = keys %had_breakpoints;
+ set_list("PERLDB_VISITED", @had_breakpoints);
set_list("PERLDB_OPT", %option);
- for (0 .. $#visited) {
- *dbline = "::_<$visited[$_]";
- set_list("PERLDB_FILE_$_", %dbline);
+ set_list("PERLDB_ON_LOAD", %break_on_load);
+ my @hard;
+ for (0 .. $#had_breakpoints) {
+ my $file = $had_breakpoints[$_];
+ *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};
+ set_list("PERLDB_FILE_$_", %dbline, @add);
}
+ for (@hard) { # Yes, really-really...
+ # Find the subroutines in this eval
+ *dbline = $main::{'_<' . $_};
+ my ($quoted, $sub, %subs, $line) = quotemeta $_;
+ for $sub (keys %sub) {
+ next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/;
+ $subs{$sub} = [$1, $2];
+ }
+ unless (%subs) {
+ print $OUT
+ "No subroutines in $_, ignoring breakpoints.\n";
+ next;
+ }
+ LINES: for $line (keys %dbline) {
+ # One breakpoint per sub only:
+ my ($offset, $sub, $found);
+ SUBS: for $sub (keys %subs) {
+ if ($subs{$sub}->[1] >= $line # Not after the subroutine
+ and (not defined $offset # Not caught
+ or $offset < 0 )) { # or badly caught
+ $found = $sub;
+ $offset = $line - $subs{$sub}->[0];
+ $offset = "+$offset", last SUBS if $offset >= 0;
+ }
+ }
+ if (defined $offset) {
+ $postponed{$found} =
+ "break $offset if $dbline{$line}";
+ } else {
+ print $OUT "Breakpoint in $_:$line ignored: after all the subroutines.\n";
+ }
+ }
+ }
+ set_list("PERLDB_POSTPONE", %postponed);
+ set_list("PERLDB_PRETYPE", @$pretype);
+ set_list("PERLDB_PRE", @$pre);
+ set_list("PERLDB_POST", @$post);
+ set_list("PERLDB_TYPEAHEAD", @typeahead);
$ENV{PERLDB_RESTART} = 1;
#print "$^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS";
exec $^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS;
print $OUT "exec failed: $!\n";
last CMD; };
$cmd =~ /^T$/ && do {
- local($p,$f,$l,$s,$h,$a,$e,$r,@a,@sub);
- for ($i = 1;
- ($p,$f,$l,$s,$h,$w,$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, $_);
- }
- $w = $w ? '@ = ' : '$ = ';
- $a = $h ? '(' . join(', ', @a) . ')' : '';
- $e =~ s/\n\s*\;\s*\Z// if $e;
- $e =~ s/[\\\']/\\$1/g if $e;
- if ($r) {
- $s = "require '$e'";
- } elsif (defined $r) {
- $s = "eval '$e'";
- } elsif ($s eq '(eval)') {
- $s = "eval {...}";
- }
- $f = "file `$f'" unless $f eq '-e';
- push(@sub, "$w$s$a called from $f line $l\n");
- last if $signal;
- }
- for ($i=0; $i <= $#sub; $i++) {
- last if $signal;
- print $OUT $sub[$i];
- }
+ 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;
$cmd = $hist[$i] . "\n";
print $OUT $cmd;
redo CMD; };
- $cmd =~ /^$sh$sh\s*([\x00-\xff]]*)/ && do {
+ $cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do {
&system($1);
next CMD; };
$cmd =~ /^$rc([^$rc].*)$/ && do {
unless $hist[$i] =~ /^.?$/;
};
next CMD; };
- $cmd =~ s/^p$/print \$DB::OUT \$_/;
- $cmd =~ s/^p\b/print \$DB::OUT /;
+ $cmd =~ s/^p$/print {\$DB::OUT} \$_/;
+ $cmd =~ s/^p\b/print {\$DB::OUT} /;
$cmd =~ /^=/ && do {
if (local($k,$v) = ($cmd =~ /^=\s*(\S+)\s+(.*)/)) {
$alias{$k}="s~$k~$v~";
}
next CMD;
}
- $SIG{PIPE}= "DB::catch" if $pager =~ /^\|/
+ $SIG{PIPE}= \&DB::catch if $pager =~ /^\|/
&& "" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE};
$selected= select(OUT);
$|= 1;
$cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'};
$cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'};
} # PIPE:
- #} # <-- Do we know what this brace is for?
$evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval;
if ($onetimeDump) {
$onetimeDump = undef;
( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?;
open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT");
open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT");
- $SIG{PIPE}= "DEFAULT" if $SIG{PIPE} eq "DB::catch";
+ $SIG{PIPE}= "DEFAULT" if $SIG{PIPE} eq \&DB::catch;
# Will stop ignoring SIGPIPE if done like nohup(1)
# does SIGINT but Perl doesn't give us a choice.
} else {
$piped= "";
}
} # CMD:
- if ($post) {
- $evalarg = $post; &eval;
+ $exiting = 1 unless defined $cmd;
+ foreach $evalarg (@$post) {
+ &eval;
}
} # 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//) {
+ my $offset = $1 || 0;
+ # Filename below can contain ':'
+ my ($file,$i) = (find_sub($subname) =~ /^(.*):(\d+)-.*$/);
+ $i += $offset;
+ if ($i) {
+ local *dbline = $main::{'_<' . $file};
+ local $^W = 0; # != 0 is magical below
+ $had_breakpoints{$file}++;
+ my $max = $#dbline;
+ ++$i until $dbline[$i] != 0 or $i >= $max;
+ $dbline{$i} = delete $postponed{$subname};
+ } else {
+ print $OUT "Subroutine $subname not found.\n";
}
+ return;
+ }
+ elsif ($postponed{$subname} eq 'compile') { $signal = 1 }
+ #print $OUT "In postponed_sub for `$subname'.\n";
}
-sub install_breakpoints {
- my $filename = shift;
- return unless exists $postponed{$filename};
- my %break = %{$postponed{$filename}};
- for (keys %break) {
- my $i = $_;
- #if (/\D/) { # Subroutine name
- #}
- $dbline{$i} = $break{$_}; # Cannot be done before the file is around
+sub postponed {
+ return &postponed_sub
+ unless ref \$_[0] eq 'GLOB'; # A subroutine is compiled.
+ # Cannot be done before the file is compiled
+ local *dbline = shift;
+ my $filename = $dbline;
+ $filename =~ s/^_<//;
+ $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};
}
+ delete $postponed_file{$filename};
}
sub dumpit {
select ($savout);
}
+# Tied method do not create a context, so may get wrong message:
+
+sub print_trace {
+ my $fh = shift;
+ my @sub = dump_trace($_[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} })"
+ : '' ;
+ $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;
+ $i < $count and ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i);
+ $i++) {
+ @a = ();
+ for $arg (@args) {
+ 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 ? '@' : "\$";
+ $args = $h ? [@a] : undef;
+ $e =~ s/\n\s*\;\s*\Z// if $e;
+ $e =~ s/([\\\'])/\\$1/g if $e;
+ if ($r) {
+ $sub = "require '$e'";
+ } elsif (defined $r) {
+ $sub = "eval '$e'";
+ } elsif ($sub eq '(eval)') {
+ $sub = "eval {...}";
+ }
+ push(@sub, {context => $context, sub => $sub, args => $args,
+ file => $file, line => $line});
+ last if $signal;
+ }
+ $trace = $otrace;
+ @sub;
+}
+
sub action {
my $action = shift;
while ($action =~ s/\\$//) {
} 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;
+ $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 $lineinfo;
if ($term->Features->{setHistory} and "@hist" ne "?") {
$term->SetHistory(@hist);
}
+ ornaments($ornaments) if defined $ornaments;
}
sub readline {
sub dump_option {
my ($opt, $val)= @_;
+ $val = option_val($opt,'N/A');
+ $val =~ s/([\\\'])/\\$1/g;
+ printf $OUT "%20s = '%s'\n", $opt, $val;
+}
+
+sub option_val {
+ my ($opt, $default)= @_;
+ my $val;
if (defined $optionVars{$opt}
and defined $ {$optionVars{$opt}}) {
$val = $ {$optionVars{$opt}};
and not defined $option{$opt}
or defined $optionVars{$opt}
and not defined $ {$optionVars{$opt}}) {
- $val = 'N/A';
+ $val = $default;
} else {
$val = $option{$opt};
}
- $val =~ s/([\\\'])/\\$1/g;
- printf $OUT "%20s = '%s'\n", $opt, $val;
+ $val
}
sub parse_options {
sub catch {
$signal = 1;
+ return; # Put nothing on the stack - malloc/free land!
}
sub warn {
sub TTY {
if ($term) {
- &warn("Too late to set TTY!\n") if @_;
- } else {
- $tty = shift if @_;
- }
+ &warn("Too late to set TTY, enabled on next `R'!\n") if @_;
+ }
+ $tty = shift if @_;
$tty or $console;
}
sub noTTY {
if ($term) {
- &warn("Too late to set noTTY!\n") if @_;
- } else {
- $notty = shift if @_;
+ &warn("Too late to set noTTY, enabled on next `R'!\n") if @_;
}
+ $notty = shift if @_;
$notty;
}
sub ReadLine {
if ($term) {
- &warn("Too late to set ReadLine!\n") if @_;
- } else {
- $rl = shift if @_;
+ &warn("Too late to set ReadLine, enabled on next `R'!\n") if @_;
}
+ $rl = shift if @_;
$rl;
}
+sub tkRunning {
+ if ($ {$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 @_;
- } else {
- $runnonstop = shift if @_;
+ &warn("Too late to set up NonStop mode, enabled on next `R'!\n") if @_;
}
+ $runnonstop = shift if @_;
$runnonstop;
}
$psh;
}
+sub ornaments {
+ if (defined $term) {
+ local ($warnLevel,$dieLevel) = (0, 1);
+ return '' unless $term->Features->{ornaments};
+ eval { $term->ornaments(@_) } || '';
+ } else {
+ $ornaments = shift;
+ }
+}
+
sub recallCommand {
if (@_) {
$rc = quotemeta shift;
s,\.p[lm]$,,i ;
s,/,::,g ;
s/^perl5db$/DB/;
+ s/^Term::ReadLine::readline$/readline/;
if (defined $ { $_ . '::VERSION' }) {
$version{$file} = "$ { $_ . '::VERSION' } from ";
}
n [expr] Next, steps over subroutine calls [in expr].
<CR> Repeat last n or s command.
r Return from current subroutine.
-c [line] Continue; optionally inserts a one-time-only breakpoint
- at the specified line.
+c [line|sub] Continue; optionally inserts a one-time-only breakpoint
+ at the specified position.
l min+incr List incr+1 lines starting at min.
l min-max List lines min through max.
l line List single line.
- 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.
condition breaks if it evaluates to true, defaults to '1'.
b subname [condition]
Set breakpoint at first line of subroutine.
+b load filename Set breakpoint on `require'ing the given file.
+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.
+ ornaments affects screen appearance of the command line.
During startup options are initialized from \$ENV{PERLDB_OPTS}.
You can put additional initialization options TTY, noTTY,
- ReadLine, and NonStop there.
-< command Define command to run before each prompt.
-> command Define command to run after each prompt.
+ ReadLine, and NonStop there (or use `R' after you set them).
+< command Define Perl command to run before each prompt.
+<< command Add to the list of Perl commands to run before each prompt.
+> command Define Perl command to run after each prompt.
+>> command Add to the list of Perl commands to run after each prompt.
+\{ commandline Define debugger command to run before each prompt.
+\{{ commandline Add to the list of debugger commands to run before each prompt.
$prc number Redo a previous command (default previous command).
$prc -number Redo number'th-to-last command.
$prc pattern Redo last command that started with pattern.
$psh [cmd] Run cmd in subshell (forces \"\$SHELL -c 'cmd'\")." ) . "
See 'O shellBang' too.
H -number Display last number commands (default all).
-p expr Same as \"print DB::OUT expr\" in current package.
+p expr Same as \"print {DB::OUT} expr\" in current package.
|dbcmd Run debugger command, piping DB::OUT to current pager.
||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.
+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.
+q or ^D Quit. Set \$DB::finished to 0 to debug global destruction.
";
$summary = <<"END_SUM";
w [line] List around line n [expr] Next, steps over subs
f filename View source in file <CR> Repeat last n or s
/pattern/ ?patt? Search forw/backw r Return from subroutine
- v Show versions of modules c [line] Continue until line
+ v Show versions of modules c [ln|sub] Continue until position
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
- > command Command for after prompt b sub [c] Set breakpoint for sub
+ <[<] or {[{] [cmd] Do before prompt b [ln/event] [c] Set breakpoint
+ >[>] [cmd] Do after prompt b sub [c] Set breakpoint for sub
$prc [N|pat] Redo a previous command d [line] Delete a breakpoint
H [-num] Display last num commands D Delete all breakpoints
= [a val] Define/list an alias a [ln] cmd Do cmd before line
|[|]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|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.
X [Vars] Same as \"V current_package [Vars]\".
- x expr Evals expression in array context, dumps the result.
- p expr Print expression (uses script's current package).
END_SUM
- # '); # Fix balance of Emacs parsing
+ # ')}}; # Fix balance of Emacs parsing
}
sub diesignal {
local $frame = 0;
local $doret = -2;
- $SIG{'ABRT'} = DEFAULT;
+ $SIG{'ABRT'} = 'DEFAULT';
kill 'ABRT', $$ if $panic++;
- print $DB::OUT "Got $_[0]!\n"; # in the case cannot continue
- local $SIG{__WARN__} = '';
- require Carp;
- local $Carp::CarpLevel = 2; # mydie + confess
- &warn(Carp::longmess("Signal @_"));
+ if (defined &Carp::longmess) {
+ local $SIG{__WARN__} = '';
+ local $Carp::CarpLevel = 2; # mydie + confess
+ &warn(Carp::longmess("Signal @_"));
+ }
+ else {
+ print $DB::OUT "Got signal @_\n";
+ }
kill 'ABRT', $$;
}
local $frame = 0;
local $doret = -2;
local $SIG{__WARN__} = '';
- require Carp;
+ local $SIG{__DIE__} = '';
+ eval { require Carp }; # If error/warning during compilation,
+ # require may be broken.
+ warn(@_, "\nPossible unrecoverable error"), warn("\nTry to decrease warnLevel `O'ption!\n"), return
+ unless defined &Carp::longmess;
#&warn("Entering dbwarn\n");
my ($mysingle,$mytrace) = ($single,$trace);
$single = 0; $trace = 0;
#&warn("dieing quietly in dbdie\n") if $ineval and $dieLevel < 2;
die @_ if $ineval and $dieLevel < 2;
}
- require Carp;
+ eval { require Carp }; # If error/warning during compilation,
+ # require may be broken.
+ die(@_, "\nUnrecoverable error") unless defined &Carp::longmess;
# We do not want to debug this chunk (automatic disabling works
# inside DB::DB, but not in Carp).
my ($mysingle,$mytrace) = ($single,$trace);
$prevwarn = $SIG{__WARN__} unless $warnLevel;
$warnLevel = shift;
if ($warnLevel) {
- $SIG{__WARN__} = 'DB::dbwarn';
+ $SIG{__WARN__} = \&DB::dbwarn;
} else {
$SIG{__WARN__} = $prevwarn;
}
$prevdie = $SIG{__DIE__} unless $dieLevel;
$dieLevel = shift;
if ($dieLevel) {
- $SIG{__DIE__} = 'DB::dbdie'; # if $dieLevel < 2;
- #$SIG{__DIE__} = 'DB::diehard' if $dieLevel >= 2;
+ $SIG{__DIE__} = \&DB::dbdie; # if $dieLevel < 2;
+ #$SIG{__DIE__} = \&DB::diehard if $dieLevel >= 2;
print $OUT "Stack dump during die enabled",
- ( $dieLevel == 1 ? " outside of evals" : ""), ".\n";
+ ( $dieLevel == 1 ? " outside of evals" : ""), ".\n"
+ if $I_m_init;
print $OUT "Dump printed too.\n" if $dieLevel > 2;
} else {
$SIG{__DIE__} = $prevdie;
$prevbus = $SIG{BUS} unless $signalLevel;
$signalLevel = shift;
if ($signalLevel) {
- $SIG{SEGV} = 'DB::diesignal';
- $SIG{BUS} = 'DB::diesignal';
+ $SIG{SEGV} = \&DB::diesignal;
+ $SIG{BUS} = \&DB::diesignal;
} else {
$SIG{SEGV} = $prevsegv;
$SIG{BUS} = $prevbus;
$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.
$window = 10;
$preview = 3;
$sub = '';
- $SIG{INT} = "DB::catch";
+ $SIG{INT} = \&DB::catch;
# This may be enabled to debug debugger:
#$warnLevel = 1 unless defined $warnLevel;
#$dieLevel = 1 unless defined $dieLevel;
$db_stop = 0; # Compiler warning
$db_stop = 1 << 30;
$level = 0; # Level of recursive debugging
+ # @stack and $doret are needed in sub sub, which is called for DB::postponed.
+ # Triggers bug (?) in perl is we postpone this until runtime:
+ @postponed = @stack = (0);
+ $doret = -2;
+ $frame = 0;
}
BEGIN {$^W = $ini_warn;} # Switch warnings back
#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, $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;
+ $prefix = "&";
+ return sort map "$prefix$_",
+ grep /^\Q$text/,
+ (keys %sub),
+ (map { /$search/ ? ($1) : () }
+ keys %sub);
+ }
+ if ($text =~ /^[\$@%](.*)::(.*)/) { # symbols in a package
+ $pack = ($1 eq 'main' ? '' : $1) . '::';
+ $prefix = (substr $text, 0, 1) . $1 . '::';
+ $text = $2;
+ my @out
+ = map "$prefix$_", grep /^\Q$text/, grep /^_?[a-zA-Z]/, keys %$pack ;
+ if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
+ return db_complete($out[0], $line, $start);
+ }
+ return sort @out;
+ }
+ if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main)
+ $pack = ($package eq 'main' ? '' : $package) . '::';
+ $prefix = substr $text, 0, 1;
+ $text = substr $text, 1;
+ my @out = map "$prefix$_", grep /^\Q$text/,
+ (grep /^_?[a-zA-Z]/, keys %$pack),
+ ( $pack eq '::' ? () : (grep /::$/, keys %::) ) ;
+ if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
+ return db_complete($out[0], $line, $start);
+ }
+ return sort @out;
+ }
+ 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 = '? ';
+ if (not defined $val or $val =~ /[\n\r]/) {
+ # Can do nothing better
+ } elsif ($val =~ /\s/) {
+ my $found;
+ foreach $l (split //, qq/\"\'\#\|/) {
+ $out = "$l$val$l ", last if (index $val, $l) == -1;
+ }
+ } else {
+ $out = "=$val ";
+ }
+ # Default to value if one completion, to question if many
+ $rl_attribs->{completer_terminator_character} = (@out == 1 ? $out : '? ');
+ return sort @out;
+ }
+ return $term->filename_list($text); # filenames
+}
+
+sub end_report {
+ print $OUT "Use `q' to quit or `R' to restart. `h q' for details.\n"
+}
+
+END {
+ $finished = $inhibit_exit; # So that some keys may be disabled.
+ # 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;
+
+sub at_exit {
+ "Debugged program terminated. Use `q' to quit or `R' to restart.";
+}
+
+package DB; # Do not trace this 1; below!
+
1;
https://perl5.git.perl.org / perl5.git / blobdiff