| Filename | /home/s1/perl5/perlbrew/perls/perl-5.22.1/lib/site_perl/5.22.1/Carp.pm |
| Statements | Executed 56 statements in 5.59ms |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 42µs | 42µs | Carp::BEGIN@3 |
| 1 | 1 | 1 | 38µs | 57µs | Carp::BEGIN@6 |
| 2 | 2 | 1 | 23µs | 23µs | Carp::_fetch_sub |
| 1 | 1 | 1 | 15µs | 28µs | Carp::BEGIN@61 |
| 1 | 1 | 1 | 15µs | 28µs | Carp::BEGIN@603 |
| 1 | 1 | 1 | 14µs | 19µs | Carp::BEGIN@4 |
| 1 | 1 | 1 | 13µs | 31µs | Carp::BEGIN@132 |
| 1 | 1 | 1 | 13µs | 31µs | Carp::BEGIN@590 |
| 1 | 1 | 1 | 12µs | 22µs | Carp::BEGIN@73 |
| 1 | 1 | 1 | 12µs | 21µs | Carp::BEGIN@5 |
| 1 | 1 | 1 | 12µs | 27µs | Carp::BEGIN@610 |
| 1 | 1 | 1 | 12µs | 12µs | Carp::BEGIN@49 |
| 1 | 1 | 1 | 10µs | 10µs | Carp::BEGIN@172 |
| 0 | 0 | 0 | 0s | 0s | Carp::__ANON__[:262] |
| 0 | 0 | 0 | 0s | 0s | Carp::__ANON__[:273] |
| 0 | 0 | 0 | 0s | 0s | Carp::__ANON__[:66] |
| 0 | 0 | 0 | 0s | 0s | Carp::__ANON__[:86] |
| 0 | 0 | 0 | 0s | 0s | Carp::_cgc |
| 0 | 0 | 0 | 0s | 0s | Carp::caller_info |
| 0 | 0 | 0 | 0s | 0s | Carp::carp |
| 0 | 0 | 0 | 0s | 0s | Carp::cluck |
| 0 | 0 | 0 | 0s | 0s | Carp::confess |
| 0 | 0 | 0 | 0s | 0s | Carp::croak |
| 0 | 0 | 0 | 0s | 0s | Carp::export_fail |
| 0 | 0 | 0 | 0s | 0s | Carp::format_arg |
| 0 | 0 | 0 | 0s | 0s | Carp::get_status |
| 0 | 0 | 0 | 0s | 0s | Carp::get_subname |
| 0 | 0 | 0 | 0s | 0s | Carp::long_error_loc |
| 0 | 0 | 0 | 0s | 0s | Carp::longmess |
| 0 | 0 | 0 | 0s | 0s | Carp::longmess_heavy |
| 0 | 0 | 0 | 0s | 0s | Carp::ret_backtrace |
| 0 | 0 | 0 | 0s | 0s | Carp::ret_summary |
| 0 | 0 | 0 | 0s | 0s | Carp::short_error_loc |
| 0 | 0 | 0 | 0s | 0s | Carp::shortmess |
| 0 | 0 | 0 | 0s | 0s | Carp::shortmess_heavy |
| 0 | 0 | 0 | 0s | 0s | Carp::str_len_trim |
| 0 | 0 | 0 | 0s | 0s | Carp::trusts |
| 0 | 0 | 0 | 0s | 0s | Carp::trusts_directly |
| 0 | 0 | 0 | 0s | 0s | Regexp::CARP_TRACE |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | package Carp; | ||||
| 2 | |||||
| 3 | 2 | 86µs | 1 | 42µs | # spent 42µs within Carp::BEGIN@3 which was called:
# once (42µs+0s) by experimental::BEGIN@8 at line 3 # spent 42µs making 1 call to Carp::BEGIN@3 |
| 4 | 3 | 41µs | 2 | 24µs | # spent 19µs (14+5) within Carp::BEGIN@4 which was called:
# once (14µs+5µs) by experimental::BEGIN@8 at line 4 # spent 19µs making 1 call to Carp::BEGIN@4
# spent 5µs making 1 call to strict::import |
| 5 | 2 | 99µs | 2 | 30µs | # spent 21µs (12+9) within Carp::BEGIN@5 which was called:
# once (12µs+9µs) by experimental::BEGIN@8 at line 5 # spent 21µs making 1 call to Carp::BEGIN@5
# spent 9µs making 1 call to warnings::import |
| 6 | # spent 57µs (38+19) within Carp::BEGIN@6 which was called:
# once (38µs+19µs) by experimental::BEGIN@8 at line 26 | ||||
| 7 | # Very old versions of warnings.pm load Carp. This can go wrong due | ||||
| 8 | # to the circular dependency. If warnings is invoked before Carp, | ||||
| 9 | # then warnings starts by loading Carp, then Carp (above) tries to | ||||
| 10 | # invoke warnings, and gets nothing because warnings is in the process | ||||
| 11 | # of loading and hasn't defined its import method yet. If we were | ||||
| 12 | # only turning on warnings ("use warnings" above) this wouldn't be too | ||||
| 13 | # bad, because Carp would just gets the state of the -w switch and so | ||||
| 14 | # might not get some warnings that it wanted. The real problem is | ||||
| 15 | # that we then want to turn off Unicode warnings, but "no warnings | ||||
| 16 | # 'utf8'" won't be effective if we're in this circular-dependency | ||||
| 17 | # situation. So, if warnings.pm is an affected version, we turn | ||||
| 18 | # off all warnings ourselves by directly setting ${^WARNING_BITS}. | ||||
| 19 | # On unaffected versions, we turn off just Unicode warnings, via | ||||
| 20 | # the proper API. | ||||
| 21 | 1 | 24µs | if(!defined($warnings::VERSION) || eval($warnings::VERSION) < 1.06) { # spent 4µs executing statements in string eval | ||
| 22 | ${^WARNING_BITS} = ""; | ||||
| 23 | } else { | ||||
| 24 | 1 | 3µs | 1 | 19µs | "warnings"->unimport("utf8"); # spent 19µs making 1 call to warnings::unimport |
| 25 | } | ||||
| 26 | 1 | 272µs | 1 | 57µs | } # spent 57µs making 1 call to Carp::BEGIN@6 |
| 27 | |||||
| 28 | sub _fetch_sub { # fetch sub without autovivifying | ||||
| 29 | 2 | 2µs | my($pack, $sub) = @_; | ||
| 30 | 2 | 2µs | $pack .= '::'; | ||
| 31 | # only works with top-level packages | ||||
| 32 | 2 | 2µs | return unless exists($::{$pack}); | ||
| 33 | 2 | 3µs | for ($::{$pack}) { | ||
| 34 | 2 | 5µs | return unless ref \$_ eq 'GLOB' && *$_{HASH} && exists $$_{$sub}; | ||
| 35 | 2 | 2µs | for ($$_{$sub}) { | ||
| 36 | return ref \$_ eq 'GLOB' ? *$_{CODE} : undef | ||||
| 37 | 2 | 16µs | } | ||
| 38 | } | ||||
| 39 | } | ||||
| 40 | |||||
| 41 | # UTF8_REGEXP_PROBLEM is a compile-time constant indicating whether Carp | ||||
| 42 | # must avoid applying a regular expression to an upgraded (is_utf8) | ||||
| 43 | # string. There are multiple problems, on different Perl versions, | ||||
| 44 | # that require this to be avoided. All versions prior to 5.13.8 will | ||||
| 45 | # load utf8_heavy.pl for the swash system, even if the regexp doesn't | ||||
| 46 | # use character classes. Perl 5.6 and Perls [5.11.2, 5.13.11) exhibit | ||||
| 47 | # specific problems when Carp is being invoked in the aftermath of a | ||||
| 48 | # syntax error. | ||||
| 49 | # spent 12µs within Carp::BEGIN@49 which was called:
# once (12µs+0s) by experimental::BEGIN@8 at line 55 | ||||
| 50 | 1 | 10µs | if("$]" < 5.013011) { | ||
| 51 | *UTF8_REGEXP_PROBLEM = sub () { 1 }; | ||||
| 52 | } else { | ||||
| 53 | 1 | 2µs | *UTF8_REGEXP_PROBLEM = sub () { 0 }; | ||
| 54 | } | ||||
| 55 | 1 | 128µs | 1 | 12µs | } # spent 12µs making 1 call to Carp::BEGIN@49 |
| 56 | |||||
| 57 | # is_utf8() is essentially the utf8::is_utf8() function, which indicates | ||||
| 58 | # whether a string is represented in the upgraded form (using UTF-8 | ||||
| 59 | # internally). As utf8::is_utf8() is only available from Perl 5.8 | ||||
| 60 | # onwards, extra effort is required here to make it work on Perl 5.6. | ||||
| 61 | # spent 28µs (15+14) within Carp::BEGIN@61 which was called:
# once (15µs+14µs) by experimental::BEGIN@8 at line 68 | ||||
| 62 | 1 | 8µs | 1 | 14µs | if(defined(my $sub = _fetch_sub utf8 => 'is_utf8')) { # spent 14µs making 1 call to Carp::_fetch_sub |
| 63 | *is_utf8 = $sub; | ||||
| 64 | } else { | ||||
| 65 | # black magic for perl 5.6 | ||||
| 66 | *is_utf8 = sub { unpack("C", "\xaa".$_[0]) != 170 }; | ||||
| 67 | } | ||||
| 68 | 1 | 202µs | 1 | 28µs | } # spent 28µs making 1 call to Carp::BEGIN@61 |
| 69 | |||||
| 70 | # The downgrade() function defined here is to be used for attempts to | ||||
| 71 | # downgrade where it is acceptable to fail. It must be called with a | ||||
| 72 | # second argument that is a true value. | ||||
| 73 | # spent 22µs (12+9) within Carp::BEGIN@73 which was called:
# once (12µs+9µs) by experimental::BEGIN@8 at line 88 | ||||
| 74 | 1 | 7µs | 1 | 9µs | if(defined(my $sub = _fetch_sub utf8 => 'downgrade')) { # spent 9µs making 1 call to Carp::_fetch_sub |
| 75 | *downgrade = \&{"utf8::downgrade"}; | ||||
| 76 | } else { | ||||
| 77 | *downgrade = sub { | ||||
| 78 | my $r = ""; | ||||
| 79 | my $l = length($_[0]); | ||||
| 80 | for(my $i = 0; $i != $l; $i++) { | ||||
| 81 | my $o = ord(substr($_[0], $i, 1)); | ||||
| 82 | return if $o > 255; | ||||
| 83 | $r .= chr($o); | ||||
| 84 | } | ||||
| 85 | $_[0] = $r; | ||||
| 86 | }; | ||||
| 87 | } | ||||
| 88 | 1 | 314µs | 1 | 22µs | } # spent 22µs making 1 call to Carp::BEGIN@73 |
| 89 | |||||
| 90 | 1 | 700ns | our $VERSION = '1.38'; | ||
| 91 | 1 | 2µs | $VERSION =~ tr/_//d; | ||
| 92 | |||||
| 93 | 1 | 300ns | our $MaxEvalLen = 0; | ||
| 94 | 1 | 100ns | our $Verbose = 0; | ||
| 95 | 1 | 100ns | our $CarpLevel = 0; | ||
| 96 | 1 | 200ns | our $MaxArgLen = 64; # How much of each argument to print. 0 = all. | ||
| 97 | 1 | 100ns | our $MaxArgNums = 8; # How many arguments to print. 0 = all. | ||
| 98 | 1 | 300ns | our $RefArgFormatter = undef; # allow caller to format reference arguments | ||
| 99 | |||||
| 100 | 1 | 800ns | require Exporter; | ||
| 101 | 1 | 8µs | our @ISA = ('Exporter'); | ||
| 102 | 1 | 1µs | our @EXPORT = qw(confess croak carp); | ||
| 103 | 1 | 700ns | our @EXPORT_OK = qw(cluck verbose longmess shortmess); | ||
| 104 | 1 | 300ns | our @EXPORT_FAIL = qw(verbose); # hook to enable verbose mode | ||
| 105 | |||||
| 106 | # The members of %Internal are packages that are internal to perl. | ||||
| 107 | # Carp will not report errors from within these packages if it | ||||
| 108 | # can. The members of %CarpInternal are internal to Perl's warning | ||||
| 109 | # system. Carp will not report errors from within these packages | ||||
| 110 | # either, and will not report calls *to* these packages for carp and | ||||
| 111 | # croak. They replace $CarpLevel, which is deprecated. The | ||||
| 112 | # $Max(EvalLen|(Arg(Len|Nums)) variables are used to specify how the eval | ||||
| 113 | # text and function arguments should be formatted when printed. | ||||
| 114 | |||||
| 115 | our %CarpInternal; | ||||
| 116 | our %Internal; | ||||
| 117 | |||||
| 118 | # disable these by default, so they can live w/o require Carp | ||||
| 119 | 1 | 1µs | $CarpInternal{Carp}++; | ||
| 120 | 1 | 300ns | $CarpInternal{warnings}++; | ||
| 121 | 1 | 300ns | $Internal{Exporter}++; | ||
| 122 | 1 | 300ns | $Internal{'Exporter::Heavy'}++; | ||
| 123 | |||||
| 124 | # if the caller specifies verbose usage ("perl -MCarp=verbose script.pl") | ||||
| 125 | # then the following method will be called by the Exporter which knows | ||||
| 126 | # to do this thanks to @EXPORT_FAIL, above. $_[1] will contain the word | ||||
| 127 | # 'verbose'. | ||||
| 128 | |||||
| 129 | sub export_fail { shift; $Verbose = shift if $_[0] eq 'verbose'; @_ } | ||||
| 130 | |||||
| 131 | sub _cgc { | ||||
| 132 | 2 | 544µs | 2 | 49µs | # spent 31µs (13+18) within Carp::BEGIN@132 which was called:
# once (13µs+18µs) by experimental::BEGIN@8 at line 132 # spent 31µs making 1 call to Carp::BEGIN@132
# spent 18µs making 1 call to strict::unimport |
| 133 | return \&{"CORE::GLOBAL::caller"} if defined &{"CORE::GLOBAL::caller"}; | ||||
| 134 | return; | ||||
| 135 | } | ||||
| 136 | |||||
| 137 | sub longmess { | ||||
| 138 | local($!, $^E); | ||||
| 139 | # Icky backwards compatibility wrapper. :-( | ||||
| 140 | # | ||||
| 141 | # The story is that the original implementation hard-coded the | ||||
| 142 | # number of call levels to go back, so calls to longmess were off | ||||
| 143 | # by one. Other code began calling longmess and expecting this | ||||
| 144 | # behaviour, so the replacement has to emulate that behaviour. | ||||
| 145 | my $cgc = _cgc(); | ||||
| 146 | my $call_pack = $cgc ? $cgc->() : caller(); | ||||
| 147 | if ( $Internal{$call_pack} or $CarpInternal{$call_pack} ) { | ||||
| 148 | return longmess_heavy(@_); | ||||
| 149 | } | ||||
| 150 | else { | ||||
| 151 | local $CarpLevel = $CarpLevel + 1; | ||||
| 152 | return longmess_heavy(@_); | ||||
| 153 | } | ||||
| 154 | } | ||||
| 155 | |||||
| 156 | our @CARP_NOT; | ||||
| 157 | |||||
| 158 | sub shortmess { | ||||
| 159 | local($!, $^E); | ||||
| 160 | my $cgc = _cgc(); | ||||
| 161 | |||||
| 162 | # Icky backwards compatibility wrapper. :-( | ||||
| 163 | local @CARP_NOT = $cgc ? $cgc->() : caller(); | ||||
| 164 | shortmess_heavy(@_); | ||||
| 165 | } | ||||
| 166 | |||||
| 167 | sub croak { die shortmess @_ } | ||||
| 168 | sub confess { die longmess @_ } | ||||
| 169 | sub carp { warn shortmess @_ } | ||||
| 170 | sub cluck { warn longmess @_ } | ||||
| 171 | |||||
| 172 | # spent 10µs within Carp::BEGIN@172 which was called:
# once (10µs+0s) by experimental::BEGIN@8 at line 179 | ||||
| 173 | 1 | 11µs | if("$]" >= 5.015002 || ("$]" >= 5.014002 && "$]" < 5.015) || | ||
| 174 | ("$]" >= 5.012005 && "$]" < 5.013)) { | ||||
| 175 | *CALLER_OVERRIDE_CHECK_OK = sub () { 1 }; | ||||
| 176 | } else { | ||||
| 177 | *CALLER_OVERRIDE_CHECK_OK = sub () { 0 }; | ||||
| 178 | } | ||||
| 179 | 1 | 3.42ms | 1 | 10µs | } # spent 10µs making 1 call to Carp::BEGIN@172 |
| 180 | |||||
| 181 | sub caller_info { | ||||
| 182 | my $i = shift(@_) + 1; | ||||
| 183 | my %call_info; | ||||
| 184 | my $cgc = _cgc(); | ||||
| 185 | { | ||||
| 186 | # Some things override caller() but forget to implement the | ||||
| 187 | # @DB::args part of it, which we need. We check for this by | ||||
| 188 | # pre-populating @DB::args with a sentinel which no-one else | ||||
| 189 | # has the address of, so that we can detect whether @DB::args | ||||
| 190 | # has been properly populated. However, on earlier versions | ||||
| 191 | # of perl this check tickles a bug in CORE::caller() which | ||||
| 192 | # leaks memory. So we only check on fixed perls. | ||||
| 193 | @DB::args = \$i if CALLER_OVERRIDE_CHECK_OK; | ||||
| 194 | package DB; | ||||
| 195 | |||||
| - - | |||||
| 200 | unless ( defined $call_info{file} ) { | ||||
| 201 | return (); | ||||
| 202 | } | ||||
| 203 | |||||
| 204 | my $sub_name = Carp::get_subname( \%call_info ); | ||||
| 205 | if ( $call_info{has_args} ) { | ||||
| 206 | my @args; | ||||
| 207 | if (CALLER_OVERRIDE_CHECK_OK && @DB::args == 1 | ||||
| 208 | && ref $DB::args[0] eq ref \$i | ||||
| 209 | && $DB::args[0] == \$i ) { | ||||
| 210 | @DB::args = (); # Don't let anyone see the address of $i | ||||
| 211 | local $@; | ||||
| 212 | my $where = eval { | ||||
| 213 | my $func = $cgc or return ''; | ||||
| 214 | my $gv = | ||||
| 215 | (_fetch_sub B => 'svref_2object' or return '') | ||||
| 216 | ->($func)->GV; | ||||
| 217 | my $package = $gv->STASH->NAME; | ||||
| 218 | my $subname = $gv->NAME; | ||||
| 219 | return unless defined $package && defined $subname; | ||||
| 220 | |||||
| 221 | # returning CORE::GLOBAL::caller isn't useful for tracing the cause: | ||||
| 222 | return if $package eq 'CORE::GLOBAL' && $subname eq 'caller'; | ||||
| 223 | " in &${package}::$subname"; | ||||
| 224 | } || ''; | ||||
| 225 | @args | ||||
| 226 | = "** Incomplete caller override detected$where; \@DB::args were not set **"; | ||||
| 227 | } | ||||
| 228 | else { | ||||
| 229 | @args = @DB::args; | ||||
| 230 | my $overflow; | ||||
| 231 | if ( $MaxArgNums and @args > $MaxArgNums ) | ||||
| 232 | { # More than we want to show? | ||||
| 233 | $#args = $MaxArgNums - 1; | ||||
| 234 | $overflow = 1; | ||||
| 235 | } | ||||
| 236 | |||||
| 237 | @args = map { Carp::format_arg($_) } @args; | ||||
| 238 | |||||
| 239 | if ($overflow) { | ||||
| 240 | push @args, '...'; | ||||
| 241 | } | ||||
| 242 | } | ||||
| 243 | |||||
| 244 | # Push the args onto the subroutine | ||||
| 245 | $sub_name .= '(' . join( ', ', @args ) . ')'; | ||||
| 246 | } | ||||
| 247 | $call_info{sub_name} = $sub_name; | ||||
| 248 | return wantarray() ? %call_info : \%call_info; | ||||
| 249 | } | ||||
| 250 | |||||
| 251 | # Transform an argument to a function into a string. | ||||
| 252 | our $in_recurse; | ||||
| 253 | sub format_arg { | ||||
| 254 | my $arg = shift; | ||||
| 255 | |||||
| 256 | if ( ref($arg) ) { | ||||
| 257 | # legitimate, let's not leak it. | ||||
| 258 | if (!$in_recurse && | ||||
| 259 | do { | ||||
| 260 | local $@; | ||||
| 261 | local $in_recurse = 1; | ||||
| 262 | local $SIG{__DIE__} = sub{}; | ||||
| 263 | eval {$arg->can('CARP_TRACE') } | ||||
| 264 | }) | ||||
| 265 | { | ||||
| 266 | return $arg->CARP_TRACE(); | ||||
| 267 | } | ||||
| 268 | elsif (!$in_recurse && | ||||
| 269 | defined($RefArgFormatter) && | ||||
| 270 | do { | ||||
| 271 | local $@; | ||||
| 272 | local $in_recurse = 1; | ||||
| 273 | local $SIG{__DIE__} = sub{}; | ||||
| 274 | eval {$arg = $RefArgFormatter->($arg); 1} | ||||
| 275 | }) | ||||
| 276 | { | ||||
| 277 | return $arg; | ||||
| 278 | } | ||||
| 279 | else | ||||
| 280 | { | ||||
| 281 | my $sub = _fetch_sub(overload => 'StrVal'); | ||||
| 282 | return $sub ? &$sub($arg) : "$arg"; | ||||
| 283 | } | ||||
| 284 | } | ||||
| 285 | return "undef" if !defined($arg); | ||||
| 286 | downgrade($arg, 1); | ||||
| 287 | return $arg if !(UTF8_REGEXP_PROBLEM && is_utf8($arg)) && | ||||
| 288 | $arg =~ /\A-?[0-9]+(?:\.[0-9]*)?(?:[eE][-+]?[0-9]+)?\z/; | ||||
| 289 | my $suffix = ""; | ||||
| 290 | if ( 2 < $MaxArgLen and $MaxArgLen < length($arg) ) { | ||||
| 291 | substr ( $arg, $MaxArgLen - 3 ) = ""; | ||||
| 292 | $suffix = "..."; | ||||
| 293 | } | ||||
| 294 | if(UTF8_REGEXP_PROBLEM && is_utf8($arg)) { | ||||
| 295 | for(my $i = length($arg); $i--; ) { | ||||
| 296 | my $c = substr($arg, $i, 1); | ||||
| 297 | my $x = substr($arg, 0, 0); # work around bug on Perl 5.8.{1,2} | ||||
| 298 | if($c eq "\"" || $c eq "\\" || $c eq "\$" || $c eq "\@") { | ||||
| 299 | substr $arg, $i, 0, "\\"; | ||||
| 300 | next; | ||||
| 301 | } | ||||
| 302 | my $o = ord($c); | ||||
| 303 | |||||
| 304 | # This code is repeated in Regexp::CARP_TRACE() | ||||
| 305 | if ($] ge 5.007_003) { | ||||
| 306 | substr $arg, $i, 1, sprintf("\\x{%x}", $o) | ||||
| 307 | if utf8::native_to_unicode($o) < utf8::native_to_unicode(0x20) | ||||
| 308 | || utf8::native_to_unicode($o) > utf8::native_to_unicode(0x7e); | ||||
| 309 | } elsif (ord("A") == 65) { | ||||
| 310 | substr $arg, $i, 1, sprintf("\\x{%x}", $o) | ||||
| 311 | if $o < 0x20 || $o > 0x7e; | ||||
| 312 | } else { # Early EBCDIC | ||||
| 313 | |||||
| 314 | # 3 EBCDIC code pages supported then; all controls but one | ||||
| 315 | # are the code points below SPACE. The other one is 0x5F on | ||||
| 316 | # POSIX-BC; FF on the other two. | ||||
| 317 | substr $arg, $i, 1, sprintf("\\x{%x}", $o) | ||||
| 318 | if $o < ord(" ") || ((ord ("^") == 106) | ||||
| 319 | ? $o == 0x5f | ||||
| 320 | : $o == 0xff); | ||||
| 321 | } | ||||
| 322 | } | ||||
| 323 | } else { | ||||
| 324 | $arg =~ s/([\"\\\$\@])/\\$1/g; | ||||
| 325 | # This is all the ASCII printables spelled-out. It is portable to all | ||||
| 326 | # Perl versions and platforms (such as EBCDIC). There are other more | ||||
| 327 | # compact ways to do this, but may not work everywhere every version. | ||||
| 328 | $arg =~ s/([^ !"\$\%#'()*+,\-.\/0123456789:;<=>?\@ABCDEFGHIJKLMNOPQRSTUVWXYZ\[\\\]^_`abcdefghijklmnopqrstuvwxyz\{|}~])/sprintf("\\x{%x}",ord($1))/eg; | ||||
| 329 | } | ||||
| 330 | downgrade($arg, 1); | ||||
| 331 | return "\"".$arg."\"".$suffix; | ||||
| 332 | } | ||||
| 333 | |||||
| 334 | sub Regexp::CARP_TRACE { | ||||
| 335 | my $arg = "$_[0]"; | ||||
| 336 | downgrade($arg, 1); | ||||
| 337 | if(UTF8_REGEXP_PROBLEM && is_utf8($arg)) { | ||||
| 338 | for(my $i = length($arg); $i--; ) { | ||||
| 339 | my $o = ord(substr($arg, $i, 1)); | ||||
| 340 | my $x = substr($arg, 0, 0); # work around bug on Perl 5.8.{1,2} | ||||
| 341 | |||||
| 342 | # This code is repeated in format_arg() | ||||
| 343 | if ($] ge 5.007_003) { | ||||
| 344 | substr $arg, $i, 1, sprintf("\\x{%x}", $o) | ||||
| 345 | if utf8::native_to_unicode($o) < utf8::native_to_unicode(0x20) | ||||
| 346 | || utf8::native_to_unicode($o) > utf8::native_to_unicode(0x7e); | ||||
| 347 | } elsif (ord("A") == 65) { | ||||
| 348 | substr $arg, $i, 1, sprintf("\\x{%x}", $o) | ||||
| 349 | if $o < 0x20 || $o > 0x7e; | ||||
| 350 | } else { # Early EBCDIC | ||||
| 351 | substr $arg, $i, 1, sprintf("\\x{%x}", $o) | ||||
| 352 | if $o < ord(" ") || ((ord ("^") == 106) | ||||
| 353 | ? $o == 0x5f | ||||
| 354 | : $o == 0xff); | ||||
| 355 | } | ||||
| 356 | } | ||||
| 357 | } else { | ||||
| 358 | # See comment in format_arg() about this same regex. | ||||
| 359 | $arg =~ s/([^ !"\$\%#'()*+,\-.\/0123456789:;<=>?\@ABCDEFGHIJKLMNOPQRSTUVWXYZ\[\\\]^_`abcdefghijklmnopqrstuvwxyz\{|}~])/sprintf("\\x{%x}",ord($1))/eg; | ||||
| 360 | } | ||||
| 361 | downgrade($arg, 1); | ||||
| 362 | my $suffix = ""; | ||||
| 363 | if($arg =~ /\A\(\?\^?([a-z]*)(?:-[a-z]*)?:(.*)\)\z/s) { | ||||
| 364 | ($suffix, $arg) = ($1, $2); | ||||
| 365 | } | ||||
| 366 | if ( 2 < $MaxArgLen and $MaxArgLen < length($arg) ) { | ||||
| 367 | substr ( $arg, $MaxArgLen - 3 ) = ""; | ||||
| 368 | $suffix = "...".$suffix; | ||||
| 369 | } | ||||
| 370 | return "qr($arg)$suffix"; | ||||
| 371 | } | ||||
| 372 | |||||
| 373 | # Takes an inheritance cache and a package and returns | ||||
| 374 | # an anon hash of known inheritances and anon array of | ||||
| 375 | # inheritances which consequences have not been figured | ||||
| 376 | # for. | ||||
| 377 | sub get_status { | ||||
| 378 | my $cache = shift; | ||||
| 379 | my $pkg = shift; | ||||
| 380 | $cache->{$pkg} ||= [ { $pkg => $pkg }, [ trusts_directly($pkg) ] ]; | ||||
| 381 | return @{ $cache->{$pkg} }; | ||||
| 382 | } | ||||
| 383 | |||||
| 384 | # Takes the info from caller() and figures out the name of | ||||
| 385 | # the sub/require/eval | ||||
| 386 | sub get_subname { | ||||
| 387 | my $info = shift; | ||||
| 388 | if ( defined( $info->{evaltext} ) ) { | ||||
| 389 | my $eval = $info->{evaltext}; | ||||
| 390 | if ( $info->{is_require} ) { | ||||
| 391 | return "require $eval"; | ||||
| 392 | } | ||||
| 393 | else { | ||||
| 394 | $eval =~ s/([\\\'])/\\$1/g; | ||||
| 395 | return "eval '" . str_len_trim( $eval, $MaxEvalLen ) . "'"; | ||||
| 396 | } | ||||
| 397 | } | ||||
| 398 | |||||
| 399 | # this can happen on older perls when the sub (or the stash containing it) | ||||
| 400 | # has been deleted | ||||
| 401 | if ( !defined( $info->{sub} ) ) { | ||||
| 402 | return '__ANON__::__ANON__'; | ||||
| 403 | } | ||||
| 404 | |||||
| 405 | return ( $info->{sub} eq '(eval)' ) ? 'eval {...}' : $info->{sub}; | ||||
| 406 | } | ||||
| 407 | |||||
| 408 | # Figures out what call (from the point of view of the caller) | ||||
| 409 | # the long error backtrace should start at. | ||||
| 410 | sub long_error_loc { | ||||
| 411 | my $i; | ||||
| 412 | my $lvl = $CarpLevel; | ||||
| 413 | { | ||||
| 414 | ++$i; | ||||
| 415 | my $cgc = _cgc(); | ||||
| 416 | my @caller = $cgc ? $cgc->($i) : caller($i); | ||||
| 417 | my $pkg = $caller[0]; | ||||
| 418 | unless ( defined($pkg) ) { | ||||
| 419 | |||||
| 420 | # This *shouldn't* happen. | ||||
| 421 | if (%Internal) { | ||||
| 422 | local %Internal; | ||||
| 423 | $i = long_error_loc(); | ||||
| 424 | last; | ||||
| 425 | } | ||||
| 426 | elsif (defined $caller[2]) { | ||||
| 427 | # this can happen when the stash has been deleted | ||||
| 428 | # in that case, just assume that it's a reasonable place to | ||||
| 429 | # stop (the file and line data will still be intact in any | ||||
| 430 | # case) - the only issue is that we can't detect if the | ||||
| 431 | # deleted package was internal (so don't do that then) | ||||
| 432 | # -doy | ||||
| 433 | redo unless 0 > --$lvl; | ||||
| 434 | last; | ||||
| 435 | } | ||||
| 436 | else { | ||||
| 437 | return 2; | ||||
| 438 | } | ||||
| 439 | } | ||||
| 440 | redo if $CarpInternal{$pkg}; | ||||
| 441 | redo unless 0 > --$lvl; | ||||
| 442 | redo if $Internal{$pkg}; | ||||
| 443 | } | ||||
| 444 | return $i - 1; | ||||
| 445 | } | ||||
| 446 | |||||
| 447 | sub longmess_heavy { | ||||
| 448 | return @_ if ref( $_[0] ); # don't break references as exceptions | ||||
| 449 | my $i = long_error_loc(); | ||||
| 450 | return ret_backtrace( $i, @_ ); | ||||
| 451 | } | ||||
| 452 | |||||
| 453 | # Returns a full stack backtrace starting from where it is | ||||
| 454 | # told. | ||||
| 455 | sub ret_backtrace { | ||||
| 456 | my ( $i, @error ) = @_; | ||||
| 457 | my $mess; | ||||
| 458 | my $err = join '', @error; | ||||
| 459 | $i++; | ||||
| 460 | |||||
| 461 | my $tid_msg = ''; | ||||
| 462 | if ( defined &threads::tid ) { | ||||
| 463 | my $tid = threads->tid; | ||||
| 464 | $tid_msg = " thread $tid" if $tid; | ||||
| 465 | } | ||||
| 466 | |||||
| 467 | my %i = caller_info($i); | ||||
| 468 | $mess = "$err at $i{file} line $i{line}$tid_msg"; | ||||
| 469 | if( defined $. ) { | ||||
| 470 | local $@ = ''; | ||||
| 471 | local $SIG{__DIE__}; | ||||
| 472 | eval { | ||||
| 473 | CORE::die; | ||||
| 474 | }; | ||||
| 475 | if($@ =~ /^Died at .*(, <.*?> line \d+).$/ ) { | ||||
| 476 | $mess .= $1; | ||||
| 477 | } | ||||
| 478 | } | ||||
| 479 | $mess .= "\.\n"; | ||||
| 480 | |||||
| 481 | while ( my %i = caller_info( ++$i ) ) { | ||||
| 482 | $mess .= "\t$i{sub_name} called at $i{file} line $i{line}$tid_msg\n"; | ||||
| 483 | } | ||||
| 484 | |||||
| 485 | return $mess; | ||||
| 486 | } | ||||
| 487 | |||||
| 488 | sub ret_summary { | ||||
| 489 | my ( $i, @error ) = @_; | ||||
| 490 | my $err = join '', @error; | ||||
| 491 | $i++; | ||||
| 492 | |||||
| 493 | my $tid_msg = ''; | ||||
| 494 | if ( defined &threads::tid ) { | ||||
| 495 | my $tid = threads->tid; | ||||
| 496 | $tid_msg = " thread $tid" if $tid; | ||||
| 497 | } | ||||
| 498 | |||||
| 499 | my %i = caller_info($i); | ||||
| 500 | return "$err at $i{file} line $i{line}$tid_msg\.\n"; | ||||
| 501 | } | ||||
| 502 | |||||
| 503 | sub short_error_loc { | ||||
| 504 | # You have to create your (hash)ref out here, rather than defaulting it | ||||
| 505 | # inside trusts *on a lexical*, as you want it to persist across calls. | ||||
| 506 | # (You can default it on $_[2], but that gets messy) | ||||
| 507 | my $cache = {}; | ||||
| 508 | my $i = 1; | ||||
| 509 | my $lvl = $CarpLevel; | ||||
| 510 | { | ||||
| 511 | my $cgc = _cgc(); | ||||
| 512 | my $called = $cgc ? $cgc->($i) : caller($i); | ||||
| 513 | $i++; | ||||
| 514 | my $caller = $cgc ? $cgc->($i) : caller($i); | ||||
| 515 | |||||
| 516 | if (!defined($caller)) { | ||||
| 517 | my @caller = $cgc ? $cgc->($i) : caller($i); | ||||
| 518 | if (@caller) { | ||||
| 519 | # if there's no package but there is other caller info, then | ||||
| 520 | # the package has been deleted - treat this as a valid package | ||||
| 521 | # in this case | ||||
| 522 | redo if defined($called) && $CarpInternal{$called}; | ||||
| 523 | redo unless 0 > --$lvl; | ||||
| 524 | last; | ||||
| 525 | } | ||||
| 526 | else { | ||||
| 527 | return 0; | ||||
| 528 | } | ||||
| 529 | } | ||||
| 530 | redo if $Internal{$caller}; | ||||
| 531 | redo if $CarpInternal{$caller}; | ||||
| 532 | redo if $CarpInternal{$called}; | ||||
| 533 | redo if trusts( $called, $caller, $cache ); | ||||
| 534 | redo if trusts( $caller, $called, $cache ); | ||||
| 535 | redo unless 0 > --$lvl; | ||||
| 536 | } | ||||
| 537 | return $i - 1; | ||||
| 538 | } | ||||
| 539 | |||||
| 540 | sub shortmess_heavy { | ||||
| 541 | return longmess_heavy(@_) if $Verbose; | ||||
| 542 | return @_ if ref( $_[0] ); # don't break references as exceptions | ||||
| 543 | my $i = short_error_loc(); | ||||
| 544 | if ($i) { | ||||
| 545 | ret_summary( $i, @_ ); | ||||
| 546 | } | ||||
| 547 | else { | ||||
| 548 | longmess_heavy(@_); | ||||
| 549 | } | ||||
| 550 | } | ||||
| 551 | |||||
| 552 | # If a string is too long, trims it with ... | ||||
| 553 | sub str_len_trim { | ||||
| 554 | my $str = shift; | ||||
| 555 | my $max = shift || 0; | ||||
| 556 | if ( 2 < $max and $max < length($str) ) { | ||||
| 557 | substr( $str, $max - 3 ) = '...'; | ||||
| 558 | } | ||||
| 559 | return $str; | ||||
| 560 | } | ||||
| 561 | |||||
| 562 | # Takes two packages and an optional cache. Says whether the | ||||
| 563 | # first inherits from the second. | ||||
| 564 | # | ||||
| 565 | # Recursive versions of this have to work to avoid certain | ||||
| 566 | # possible endless loops, and when following long chains of | ||||
| 567 | # inheritance are less efficient. | ||||
| 568 | sub trusts { | ||||
| 569 | my $child = shift; | ||||
| 570 | my $parent = shift; | ||||
| 571 | my $cache = shift; | ||||
| 572 | my ( $known, $partial ) = get_status( $cache, $child ); | ||||
| 573 | |||||
| 574 | # Figure out consequences until we have an answer | ||||
| 575 | while ( @$partial and not exists $known->{$parent} ) { | ||||
| 576 | my $anc = shift @$partial; | ||||
| 577 | next if exists $known->{$anc}; | ||||
| 578 | $known->{$anc}++; | ||||
| 579 | my ( $anc_knows, $anc_partial ) = get_status( $cache, $anc ); | ||||
| 580 | my @found = keys %$anc_knows; | ||||
| 581 | @$known{@found} = (); | ||||
| 582 | push @$partial, @$anc_partial; | ||||
| 583 | } | ||||
| 584 | return exists $known->{$parent}; | ||||
| 585 | } | ||||
| 586 | |||||
| 587 | # Takes a package and gives a list of those trusted directly | ||||
| 588 | sub trusts_directly { | ||||
| 589 | my $class = shift; | ||||
| 590 | 2 | 161µs | 2 | 48µs | # spent 31µs (13+18) within Carp::BEGIN@590 which was called:
# once (13µs+18µs) by experimental::BEGIN@8 at line 590 # spent 31µs making 1 call to Carp::BEGIN@590
# spent 18µs making 1 call to strict::unimport |
| 591 | my $stash = \%{"$class\::"}; | ||||
| 592 | for my $var (qw/ CARP_NOT ISA /) { | ||||
| 593 | # Don't try using the variable until we know it exists, | ||||
| 594 | # to avoid polluting the caller's namespace. | ||||
| 595 | if ( $stash->{$var} && *{$stash->{$var}}{ARRAY} && @{$stash->{$var}} ) { | ||||
| 596 | return @{$stash->{$var}} | ||||
| 597 | } | ||||
| 598 | } | ||||
| 599 | return; | ||||
| 600 | } | ||||
| 601 | |||||
| 602 | 1 | 900ns | if(!defined($warnings::VERSION) || | ||
| 603 | 3 | 79µs | 2 | 42µs | # spent 28µs (15+14) within Carp::BEGIN@603 which was called:
# once (15µs+14µs) by experimental::BEGIN@8 at line 603 # spent 28µs making 1 call to Carp::BEGIN@603
# spent 14µs making 1 call to warnings::unimport |
| 604 | # Very old versions of warnings.pm import from Carp. This can go | ||||
| 605 | # wrong due to the circular dependency. If Carp is invoked before | ||||
| 606 | # warnings, then Carp starts by loading warnings, then warnings | ||||
| 607 | # tries to import from Carp, and gets nothing because Carp is in | ||||
| 608 | # the process of loading and hasn't defined its import method yet. | ||||
| 609 | # So we work around that by manually exporting to warnings here. | ||||
| 610 | 2 | 117µs | 2 | 43µs | # spent 27µs (12+15) within Carp::BEGIN@610 which was called:
# once (12µs+15µs) by experimental::BEGIN@8 at line 610 # spent 27µs making 1 call to Carp::BEGIN@610
# spent 15µs making 1 call to strict::unimport |
| 611 | *{"warnings::$_"} = \&$_ foreach @EXPORT; | ||||
| 612 | } | ||||
| 613 | |||||
| 614 | 1 | 14µs | 1; | ||
| 615 | |||||
| 616 | __END__ |