X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2Fperl5db.pl;h=d0a712534ae1a57635ec783943b7c37a98ac56ea;hb=12c5d27a30700a469ee068632587ba3fb5c99a7d;hp=981b24e386f3e70e2b80e0cd35633de6480ddd2d;hpb=9e0ff5ef23e91404cf40a8d53c9c0dcd28c6448f;p=p5sagit%2Fp5-mst-13.2.git diff --git a/lib/perl5db.pl b/lib/perl5db.pl index 981b24e..d0a7125 100644 --- a/lib/perl5db.pl +++ b/lib/perl5db.pl @@ -2,7 +2,7 @@ package DB; # Debugger for Perl 5.00x; perl5db.pl patch level: -$VERSION = 0.96; +$VERSION = 0.9911; $header = "perl5db.pl patch level $VERSION"; # Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich) @@ -17,14 +17,14 @@ $header = "perl5db.pl patch level $VERSION"; # 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(); 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). # @@ -33,19 +33,19 @@ $header = "perl5db.pl patch level $VERSION"; # if caller() is called from the package DB, it provides some # additional data. # -# The array @{"_<$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 $ @@ -120,6 +120,28 @@ $header = "perl5db.pl patch level $VERSION"; # 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'). #################################################################### @@ -135,12 +157,11 @@ warn ( # Do not ;-) $dumpvar::quoteHighBit, $dumpvar::printUndef, $dumpvar::globPrint, - $readline::Tk_toloop, $dumpvar::usageOnly, @ARGS, $Carp::CarpLevel, $panic, - $first_time, + $second_time, ) if 0; # Command-line + PERLLIB: @@ -154,10 +175,10 @@ $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, @@ -167,9 +188,11 @@ $inhibit_exit = $option{PrintRet} = 1; 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 = ( @@ -187,6 +210,8 @@ $inhibit_exit = $option{PrintRet} = 1; signalLevel => \&signalLevel, warnLevel => \&warnLevel, dieLevel => \&dieLevel, + tkRunning => \&tkRunning, + ornaments => \&ornaments, ); %optionRequire = ( @@ -209,6 +234,7 @@ signalLevel($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"; @@ -236,7 +262,8 @@ if (exists $ENV{PERLDB_RESTART}) { %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,$val); @@ -259,7 +286,7 @@ if ($notty) { if (-e "/dev/tty") { $console = "/dev/tty"; - } elsif (-e "con") { + } elsif (-e "con" or $^O eq 'MSWin32') { $console = "con"; } else { $console = "sys\$command"; @@ -317,21 +344,23 @@ if (defined &afterinit) { # May be defined in $rcfile ############################################################ Subroutines sub DB { - unless ($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') { @@ -341,7 +370,9 @@ sub DB { $dbline{$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"; @@ -353,30 +384,41 @@ sub DB { $after = ($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; + 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), @@ -389,12 +431,12 @@ sub DB { $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 $help; next CMD; }; @@ -443,9 +485,14 @@ sub DB { select ($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"; @@ -453,30 +500,37 @@ sub DB { } 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; } @@ -490,9 +544,10 @@ sub DB { 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 }; @@ -503,8 +558,10 @@ sub DB { #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); }; @@ -519,6 +576,7 @@ sub DB { $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; @@ -528,7 +586,7 @@ sub DB { $arrow = ($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]; @@ -542,7 +600,7 @@ sub DB { 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; @@ -563,7 +621,7 @@ sub DB { $cmd =~ /^L$/ && do { my $file; for $file (keys %had_breakpoints) { - local *dbline = "::_<$file"; + local *dbline = $main::{'_<' . $file}; my $max = $#dbline; my $was; @@ -595,12 +653,11 @@ sub DB { 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" @@ -620,7 +677,7 @@ sub DB { } 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}; @@ -629,14 +686,15 @@ sub DB { $had_breakpoints{$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; @@ -646,11 +704,11 @@ sub DB { 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; @@ -677,7 +735,7 @@ sub DB { $cmd =~ /^A$/ && do { my $file; for $file (keys %had_breakpoints) { - local *dbline = "::_<$file"; + local *dbline = $main::{'_<' . $file}; my $max = $#dbline; my $was; @@ -741,11 +799,11 @@ sub DB { 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; @@ -799,18 +857,18 @@ sub DB { 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} =~ /^$quoted:(\d+)-(\d+)$/; @@ -848,7 +906,7 @@ sub DB { 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; @@ -862,6 +920,7 @@ sub DB { $pat = $inpat; } $end = $start; + $incr = -1; eval ' for (;;) { ++$start; @@ -890,6 +949,7 @@ sub DB { $pat = $inpat; } $end = $start; + $incr = -1; eval ' for (;;) { --$start; @@ -1016,7 +1076,10 @@ sub DB { $piped= ""; } } # CMD: - map {$evalarg = $_; &eval} @$post; + $exiting = 1 unless defined $cmd; + foreach $evalarg (@$post) { + &eval; + } } # if ($single || $signal) ($@, $!, $,, $/, $\, $^W) = @saved; (); @@ -1027,26 +1090,38 @@ sub DB { sub sub { my ($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; } } @@ -1071,23 +1146,26 @@ sub eval { $^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; @@ -1098,7 +1176,8 @@ sub postponed_sub { } 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 { @@ -1108,15 +1187,17 @@ sub postponed { local *dbline = shift; my $filename = $dbline; $filename =~ s/^_ $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) { @@ -1187,6 +1297,7 @@ sub dump_trace { file => $file, line => $line}); last if $signal; } + $trace = $otrace; @sub; } @@ -1250,15 +1361,13 @@ sub setterm { } 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 $lineinfo; @@ -1266,6 +1375,7 @@ sub setterm { if ($term->Features->{setHistory} and "@hist" ne "?") { $term->SetHistory(@hist); } + ornaments($ornaments) if defined $ornaments; } sub readline { @@ -1417,6 +1527,15 @@ sub ReadLine { $rl; } +sub tkRunning { + if ($ {$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 @_; @@ -1446,6 +1565,16 @@ sub shellBang { $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; @@ -1511,10 +1640,10 @@ l List next window of lines. - 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. @@ -1527,6 +1656,8 @@ 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 @@ -1538,11 +1669,17 @@ V [pkg [vars]] List some (default all) variables in package (default current). 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; @@ -1550,10 +1687,11 @@ O [opt[=val]] [opt\"val\"] [opt?]... 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. @@ -1580,6 +1718,9 @@ command Execute as a perl statement in current package. 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. @@ -1604,7 +1745,7 @@ Debugger controls: L List break pts & actions |[|]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. @@ -1618,11 +1759,14 @@ sub diesignal { local $doret = -2; $SIG{'ABRT'} = 'DEFAULT'; kill 'ABRT', $$ if $panic++; - print $DB::OUT "Got $_[0]!\n"; # in the case cannot continue - local $SIG{__WARN__} = ''; - require Carp; - local $Carp::CarpLevel = 2; # mydie + confess - &warn(Carp::longmess("Signal @_")); + if (defined &Carp::longmess) { + local $SIG{__WARN__} = ''; + local $Carp::CarpLevel = 2; # mydie + confess + &warn(Carp::longmess("Signal @_")); + } + else { + print $DB::OUT "Got signal @_\n"; + } kill 'ABRT', $$; } @@ -1723,6 +1867,46 @@ sub signalLevel { $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, $prepend, 1); + } +} + # The following BEGIN is very handy if debugger goes havoc, debugging debugger? BEGIN { # This does not compile, alas. @@ -1756,13 +1940,40 @@ BEGIN {$^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, $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) . '::'; @@ -1773,7 +1984,7 @@ sub db_complete { 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) . '::'; @@ -1785,13 +1996,9 @@ sub db_complete { 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 = '? '; @@ -1806,20 +2013,19 @@ sub db_complete { $out = "=$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; @@ -1828,4 +2034,6 @@ sub at_exit { "Debuggee terminated. Use `q' to quit and `R' to restart."; } +package DB; # Do not trace this 1; below! + 1;