| File | /usr/share/perl/5.8/overload.pm | Statements Executed | 19 | Total Time | 4.9e-05 seconds |
| Calls | Inclusive Time | Subroutine | |
|---|---|---|---|
| 1 | 0.00012 | overload:: | import |
| 1 | 0.00005 | overload:: | OVERLOAD |
| 0 | 0 | overload:: | AddrRef |
| 0 | 0 | overload:: | BEGIN |
| 0 | 0 | overload:: | Method |
| 0 | 0 | overload:: | Overloaded |
| 0 | 0 | overload:: | OverloadedStringify |
| 0 | 0 | overload:: | constant |
| 0 | 0 | overload:: | mycan |
| 0 | 0 | overload:: | nil |
| 0 | 0 | overload:: | ov_method |
| 0 | 0 | overload:: | remove_constant |
| 0 | 0 | overload:: | unimport |
| Line | Stmts. | Exclusive Time | Avg. | Code |
|---|---|---|---|---|
| 1 | package overload; | |||
| 2 | ||||
| 3 | our $VERSION = '1.04'; | |||
| 4 | ||||
| 5 | $overload::hint_bits = 0x20000; # HINT_LOCALIZE_HH | |||
| 6 | ||||
| 7 | sub nil {} | |||
| 8 | ||||
| 9 | # spent 0.00005s within overload::OVERLOAD which was called:
# 1 times (0.00005s) by overload::import at line 35 of /usr/share/perl/5.8/overload.pm sub OVERLOAD { | |||
| 10 | 1 | 0 | 0 | $package = shift; |
| 11 | 1 | 3e-06 | 3e-06 | my %arg = @_; |
| 12 | 1 | 1e-06 | 1e-06 | my ($sub, $fb); |
| 13 | 1 | 7e-06 | 7e-06 | $ {$package . "::OVERLOAD"}{dummy}++; # Register with magic by touching. |
| 14 | 1 | 4e-06 | 4e-06 | *{$package . "::()"} = \&nil; # Make it findable via fetchmethod. |
| 15 | 1 | 3e-06 | 3e-06 | for (keys %arg) { |
| 16 | 3 | 4e-06 | 1e-06 | if ($_ eq 'fallback') { |
| 17 | $fb = $arg{$_}; | |||
| 18 | } else { | |||
| 19 | 2 | 1e-06 | 5e-07 | $sub = $arg{$_}; |
| 20 | 2 | 2e-06 | 1e-06 | if (not ref $sub and $sub !~ /::/) { |
| 21 | $ {$package . "::(" . $_} = $sub; | |||
| 22 | $sub = \&nil; | |||
| 23 | } | |||
| 24 | #print STDERR "Setting `$ {'package'}::\cO$_' to \\&`$sub'.\n"; | |||
| 25 | 2 | 6e-06 | 3e-06 | *{$package . "::(" . $_} = \&{ $sub }; |
| 26 | } | |||
| 27 | } | |||
| 28 | 1 | 3e-06 | 3e-06 | ${$package . "::()"} = $fb; # Make it findable too (fallback only). |
| 29 | } | |||
| 30 | ||||
| 31 | # spent 0.00012s within overload::import which was called:
# 1 times (0.00012s) by CGI::Cookie::BEGIN at line 19 of /usr/share/perl/5.8/CGI/Cookie.pm sub import { | |||
| 32 | 1 | 3e-06 | 3e-06 | $package = (caller())[0]; |
| 33 | # *{$package . "::OVERLOAD"} = \&OVERLOAD; | |||
| 34 | 1 | 1e-06 | 1e-06 | shift; |
| 35 | 1 | 0.00001 | 0.00001 | $package->overload::OVERLOAD(@_); # spent 0.00005s making 1 calls to overload::OVERLOAD |
| 36 | } | |||
| 37 | ||||
| 38 | sub unimport { | |||
| 39 | $package = (caller())[0]; | |||
| 40 | ${$package . "::OVERLOAD"}{dummy}++; # Upgrade the table | |||
| 41 | shift; | |||
| 42 | for (@_) { | |||
| 43 | if ($_ eq 'fallback') { | |||
| 44 | undef $ {$package . "::()"}; | |||
| 45 | } else { | |||
| 46 | delete $ {$package . "::"}{"(" . $_}; | |||
| 47 | } | |||
| 48 | } | |||
| 49 | } | |||
| 50 | ||||
| 51 | sub Overloaded { | |||
| 52 | my $package = shift; | |||
| 53 | $package = ref $package if ref $package; | |||
| 54 | $package->can('()'); | |||
| 55 | } | |||
| 56 | ||||
| 57 | sub ov_method { | |||
| 58 | my $globref = shift; | |||
| 59 | return undef unless $globref; | |||
| 60 | my $sub = \&{*$globref}; | |||
| 61 | return $sub if $sub ne \&nil; | |||
| 62 | return shift->can($ {*$globref}); | |||
| 63 | } | |||
| 64 | ||||
| 65 | sub OverloadedStringify { | |||
| 66 | my $package = shift; | |||
| 67 | $package = ref $package if ref $package; | |||
| 68 | #$package->can('(""') | |||
| 69 | ov_method mycan($package, '(""'), $package | |||
| 70 | or ov_method mycan($package, '(0+'), $package | |||
| 71 | or ov_method mycan($package, '(bool'), $package | |||
| 72 | or ov_method mycan($package, '(nomethod'), $package; | |||
| 73 | } | |||
| 74 | ||||
| 75 | sub Method { | |||
| 76 | my $package = shift; | |||
| 77 | $package = ref $package if ref $package; | |||
| 78 | #my $meth = $package->can('(' . shift); | |||
| 79 | ov_method mycan($package, '(' . shift), $package; | |||
| 80 | #return $meth if $meth ne \&nil; | |||
| 81 | #return $ {*{$meth}}; | |||
| 82 | } | |||
| 83 | ||||
| 84 | sub AddrRef { | |||
| 85 | my $package = ref $_[0]; | |||
| 86 | return "$_[0]" unless $package; | |||
| 87 | ||||
| 88 | require Scalar::Util; | |||
| 89 | my $class = Scalar::Util::blessed($_[0]); | |||
| 90 | my $class_prefix = defined($class) ? "$class=" : ""; | |||
| 91 | my $type = Scalar::Util::reftype($_[0]); | |||
| 92 | my $addr = Scalar::Util::refaddr($_[0]); | |||
| 93 | return sprintf("$class_prefix$type(0x%x)", $addr); | |||
| 94 | } | |||
| 95 | ||||
| 96 | *StrVal = *AddrRef; | |||
| 97 | ||||
| 98 | sub mycan { # Real can would leave stubs. | |||
| 99 | my ($package, $meth) = @_; | |||
| 100 | return \*{$package . "::$meth"} if defined &{$package . "::$meth"}; | |||
| 101 | my $p; | |||
| 102 | foreach $p (@{$package . "::ISA"}) { | |||
| 103 | my $out = mycan($p, $meth); | |||
| 104 | return $out if $out; | |||
| 105 | } | |||
| 106 | return undef; | |||
| 107 | } | |||
| 108 | ||||
| 109 | %constants = ( | |||
| 110 | 'integer' => 0x1000, # HINT_NEW_INTEGER | |||
| 111 | 'float' => 0x2000, # HINT_NEW_FLOAT | |||
| 112 | 'binary' => 0x4000, # HINT_NEW_BINARY | |||
| 113 | 'q' => 0x8000, # HINT_NEW_STRING | |||
| 114 | 'qr' => 0x10000, # HINT_NEW_RE | |||
| 115 | ); | |||
| 116 | ||||
| 117 | %ops = ( with_assign => "+ - * / % ** << >> x .", | |||
| 118 | assign => "+= -= *= /= %= **= <<= >>= x= .=", | |||
| 119 | num_comparison => "< <= > >= == !=", | |||
| 120 | '3way_comparison'=> "<=> cmp", | |||
| 121 | str_comparison => "lt le gt ge eq ne", | |||
| 122 | binary => "& | ^", | |||
| 123 | unary => "neg ! ~", | |||
| 124 | mutators => '++ --', | |||
| 125 | func => "atan2 cos sin exp abs log sqrt int", | |||
| 126 | conversion => 'bool "" 0+', | |||
| 127 | iterators => '<>', | |||
| 128 | dereferencing => '${} @{} %{} &{} *{}', | |||
| 129 | special => 'nomethod fallback ='); | |||
| 130 | ||||
| 131 | use warnings::register; | |||
| 132 | sub constant { | |||
| 133 | # Arguments: what, sub | |||
| 134 | while (@_) { | |||
| 135 | if (@_ == 1) { | |||
| 136 | warnings::warnif ("Odd number of arguments for overload::constant"); | |||
| 137 | last; | |||
| 138 | } | |||
| 139 | elsif (!exists $constants {$_ [0]}) { | |||
| 140 | warnings::warnif ("`$_[0]' is not an overloadable type"); | |||
| 141 | } | |||
| 142 | elsif (!ref $_ [1] || "$_[1]" !~ /CODE\(0x[\da-f]+\)$/) { | |||
| 143 | # Can't use C<ref $_[1] eq "CODE"> above as code references can be | |||
| 144 | # blessed, and C<ref> would return the package the ref is blessed into. | |||
| 145 | if (warnings::enabled) { | |||
| 146 | $_ [1] = "undef" unless defined $_ [1]; | |||
| 147 | warnings::warn ("`$_[1]' is not a code reference"); | |||
| 148 | } | |||
| 149 | } | |||
| 150 | else { | |||
| 151 | $^H{$_[0]} = $_[1]; | |||
| 152 | $^H |= $constants{$_[0]} | $overload::hint_bits; | |||
| 153 | } | |||
| 154 | shift, shift; | |||
| 155 | } | |||
| 156 | } | |||
| 157 | ||||
| 158 | sub remove_constant { | |||
| 159 | # Arguments: what, sub | |||
| 160 | while (@_) { | |||
| 161 | delete $^H{$_[0]}; | |||
| 162 | $^H &= ~ $constants{$_[0]}; | |||
| 163 | shift, shift; | |||
| 164 | } | |||
| 165 | } | |||
| 166 | ||||
| 167 | 1; | |||
| 168 | ||||
| 169 | __END__ | |||
| 170 |