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package Lexical::Failure::Objects; |
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3
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10
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10
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191
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use 5.014; |
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65
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4
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10
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97
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use warnings; |
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22
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10
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295
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5
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10
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5223
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use Hash::Util::FieldHash 'fieldhash'; |
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7830
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10
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15494
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6
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7
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our $VERSION = '0.000001'; |
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9
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# Be invisible to Carp... |
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our @CARP_NOT = __PACKAGE__; |
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12
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# Attribute storage... |
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fieldhash my %msg_for; |
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fieldhash my %context_for; |
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fieldhash my %checked_for; |
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17
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# Constructor... |
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sub new { |
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5
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5
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1
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28
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my ($class, %option) = @_; |
20
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5
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21
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my $newobj = bless do{ \my $impl }, $class; |
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18
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21
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22
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5
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58
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$msg_for{$newobj} = $option{msg}; |
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5
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48
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$context_for{$newobj} = $option{context}; |
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25
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5
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41
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return $newobj; |
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} |
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28
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# Utilities for error generation... |
29
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sub _croak { |
30
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10
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10
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77
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require Carp; |
31
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10
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1231
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Carp::croak(@_); |
32
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} |
33
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34
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sub _cant_use { |
35
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10
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10
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29
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my ($obj, $as) = @_; |
36
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10
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50
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34
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$as //= q{}; |
37
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38
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10
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19
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my (undef, $file, $line, $subname) = @{$context_for{$obj}}; |
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10
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45
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39
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10
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34
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$checked_for{$obj} = 1; |
40
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10
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57
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_croak("$msg_for{$obj} at $file line $line\nAttempt to use failure returned by $subname" . $as); |
41
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} |
42
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43
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# How failure objects behave... |
44
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use overload ( |
45
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# Fail when used as a boolean... |
46
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0
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0
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0
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bool => sub { my ($self) = @_; $checked_for{$self} = 1; return; }, |
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0
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0
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0
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0
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47
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4
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4
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5418
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q[!] => sub { my ($self) = @_; $checked_for{$self} = 1; return 1; }, |
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4
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28
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4
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37
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48
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49
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# Croak when used any other way... |
50
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0
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0
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0
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q[neg] => sub { my ($self) = @_; _cant_use($self, " as negative value"); }, |
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0
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0
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51
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0
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0
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0
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q[~] => sub { my ($self) = @_; _cant_use($self, " in bitwise complement"); }, |
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0
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0
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52
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3
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3
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9944
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q[""] => sub { my ($self) = @_; _cant_use($self, " as string"); }, |
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3
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14
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53
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0
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0
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0
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q[0+] => sub { my ($self) = @_; _cant_use($self, " as number"); }, |
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0
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0
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54
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0
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0
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0
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q[qr] => sub { my ($self) = @_; _cant_use($self, " as regex"); }, |
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0
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0
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55
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0
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0
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0
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q[++] => sub { my ($self) = @_; _cant_use($self, " in increment"); }, |
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0
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0
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56
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0
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0
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0
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q[--] => sub { my ($self) = @_; _cant_use($self, " in decrement"); }, |
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0
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0
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57
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0
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0
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0
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q[atan2] => sub { my ($self) = @_; _cant_use($self, " as argument to atan2"); }, |
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0
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0
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58
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0
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0
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0
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q[cos] => sub { my ($self) = @_; _cant_use($self, " as argument to cos"); }, |
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0
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0
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59
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0
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0
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0
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q[sin] => sub { my ($self) = @_; _cant_use($self, " as argument to sin"); }, |
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0
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0
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60
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0
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0
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0
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q[exp] => sub { my ($self) = @_; _cant_use($self, " as argument to exp"); }, |
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0
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0
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61
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0
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0
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0
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q[abs] => sub { my ($self) = @_; _cant_use($self, " as argument to abs"); }, |
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0
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0
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62
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0
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0
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0
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q[log] => sub { my ($self) = @_; _cant_use($self, " as argument to log"); }, |
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0
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0
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63
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0
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0
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0
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q[sqrt] => sub { my ($self) = @_; _cant_use($self, " as argument to sqrt"); }, |
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0
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0
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64
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0
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0
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0
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q[int] => sub { my ($self) = @_; _cant_use($self, " as argument to int"); }, |
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0
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0
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65
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4
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4
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18848
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q[+] => sub { my ($self) = @_; _cant_use($self, " in addition"); }, |
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4
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28
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66
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0
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0
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0
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q[-] => sub { my ($self) = @_; _cant_use($self, " in subtraction"); }, |
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0
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0
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67
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0
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0
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0
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q[*] => sub { my ($self) = @_; _cant_use($self, " in multiplication"); }, |
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0
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0
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68
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0
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0
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0
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q[/] => sub { my ($self) = @_; _cant_use($self, " in division"); }, |
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0
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0
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69
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0
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0
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0
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q[%] => sub { my ($self) = @_; _cant_use($self, " in modulo"); }, |
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0
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0
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70
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0
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0
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0
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q[**] => sub { my ($self) = @_; _cant_use($self, " in exponentiation"); }, |
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0
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0
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71
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0
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0
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0
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q[<<] => sub { my ($self) = @_; _cant_use($self, " in left shift"); }, |
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0
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0
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72
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0
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0
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0
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q[>>] => sub { my ($self) = @_; _cant_use($self, " in right shift"); }, |
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0
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0
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73
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0
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0
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0
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q[x] => sub { my ($self) = @_; _cant_use($self, " in repetition"); }, |
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0
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0
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|
74
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0
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0
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0
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q[.] => sub { my ($self) = @_; _cant_use($self, " in string concatenation"); }, |
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0
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0
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75
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0
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0
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0
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q[<>] => sub { my ($self) = @_; _cant_use($self, " in <> iterator"); }, |
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0
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0
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|
76
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0
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0
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0
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q[-X] => sub { my ($self) = @_; _cant_use($self, " in filetest"); }, |
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0
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0
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77
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0
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|
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0
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0
|
q[${}] => sub { my ($self) = @_; _cant_use($self, " as scalar reference"); }, |
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0
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0
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|
78
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0
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0
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0
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q[@{}] => sub { my ($self) = @_; _cant_use($self, " as array reference"); }, |
|
0
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0
|
|
79
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3
|
|
|
3
|
|
9846
|
q[%{}] => sub { my ($self) = @_; _cant_use($self, " as hash reference"); }, |
|
3
|
|
|
|
|
11
|
|
80
|
0
|
|
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0
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0
|
q[&{}] => sub { my ($self) = @_; _cant_use($self, " as subroutine reference"); }, |
|
0
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|
|
|
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0
|
|
81
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0
|
|
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0
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0
|
q[*{}] => sub { my ($self) = @_; _cant_use($self, " as typeglob reference"); }, |
|
0
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|
|
|
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0
|
|
82
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0
|
|
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0
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0
|
q[+=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
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|
|
|
|
0
|
|
83
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0
|
|
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0
|
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0
|
q[-=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
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|
|
|
|
0
|
|
84
|
0
|
|
|
0
|
|
0
|
q[*=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
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|
|
|
|
0
|
|
85
|
0
|
|
|
0
|
|
0
|
q[/=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
|
|
|
|
|
0
|
|
86
|
0
|
|
|
0
|
|
0
|
q[%=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
|
|
|
|
|
0
|
|
87
|
0
|
|
|
0
|
|
0
|
q[**=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
|
|
|
|
|
0
|
|
88
|
0
|
|
|
0
|
|
0
|
q[<<=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
|
|
|
|
|
0
|
|
89
|
0
|
|
|
0
|
|
0
|
q[>>=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
|
|
|
|
|
0
|
|
90
|
0
|
|
|
0
|
|
0
|
q[x=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
|
|
|
|
|
0
|
|
91
|
0
|
|
|
0
|
|
0
|
q[.=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
|
|
|
|
|
0
|
|
92
|
0
|
|
|
0
|
|
0
|
q[&=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
|
|
|
|
|
0
|
|
93
|
0
|
|
|
0
|
|
0
|
q[|=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
|
|
|
|
|
0
|
|
94
|
0
|
|
|
0
|
|
0
|
q[^=] => sub { my ($self) = @_; _cant_use($self, " in assignment"); }, |
|
0
|
|
|
|
|
0
|
|
95
|
0
|
|
|
0
|
|
0
|
q[<] => sub { my ($self) = @_; _cant_use($self, " in numeric comparison"); }, |
|
0
|
|
|
|
|
0
|
|
96
|
0
|
|
|
0
|
|
0
|
q[<=] => sub { my ($self) = @_; _cant_use($self, " in numeric comparison"); }, |
|
0
|
|
|
|
|
0
|
|
97
|
0
|
|
|
0
|
|
0
|
q[>] => sub { my ($self) = @_; _cant_use($self, " in numeric comparison"); }, |
|
0
|
|
|
|
|
0
|
|
98
|
0
|
|
|
0
|
|
0
|
q[>=] => sub { my ($self) = @_; _cant_use($self, " in numeric comparison"); }, |
|
0
|
|
|
|
|
0
|
|
99
|
0
|
|
|
0
|
|
0
|
q[==] => sub { my ($self) = @_; _cant_use($self, " in numeric comparison"); }, |
|
0
|
|
|
|
|
0
|
|
100
|
0
|
|
|
0
|
|
0
|
q[!=] => sub { my ($self) = @_; _cant_use($self, " in numeric comparison"); }, |
|
0
|
|
|
|
|
0
|
|
101
|
0
|
|
|
0
|
|
0
|
q[<=>] => sub { my ($self) = @_; _cant_use($self, " in numeric comparison"); }, |
|
0
|
|
|
|
|
0
|
|
102
|
0
|
|
|
0
|
|
0
|
q[cmp] => sub { my ($self) = @_; _cant_use($self, " in string comparison"); }, |
|
0
|
|
|
|
|
0
|
|
103
|
0
|
|
|
0
|
|
0
|
q[lt] => sub { my ($self) = @_; _cant_use($self, " in string comparison"); }, |
|
0
|
|
|
|
|
0
|
|
104
|
0
|
|
|
0
|
|
0
|
q[le] => sub { my ($self) = @_; _cant_use($self, " in string comparison"); }, |
|
0
|
|
|
|
|
0
|
|
105
|
0
|
|
|
0
|
|
0
|
q[gt] => sub { my ($self) = @_; _cant_use($self, " in string comparison"); }, |
|
0
|
|
|
|
|
0
|
|
106
|
0
|
|
|
0
|
|
0
|
q[ge] => sub { my ($self) = @_; _cant_use($self, " in string comparison"); }, |
|
0
|
|
|
|
|
0
|
|
107
|
0
|
|
|
0
|
|
0
|
q[eq] => sub { my ($self) = @_; _cant_use($self, " in string comparison"); }, |
|
0
|
|
|
|
|
0
|
|
108
|
0
|
|
|
0
|
|
0
|
q[ne] => sub { my ($self) = @_; _cant_use($self, " in string comparison"); }, |
|
0
|
|
|
|
|
0
|
|
109
|
0
|
|
|
0
|
|
0
|
q[&] => sub { my ($self) = @_; _cant_use($self, " in bitwise and"); }, |
|
0
|
|
|
|
|
0
|
|
110
|
0
|
|
|
0
|
|
0
|
q[|] => sub { my ($self) = @_; _cant_use($self, " in bitwise or"); }, |
|
0
|
|
|
|
|
0
|
|
111
|
0
|
|
|
0
|
|
0
|
q[^] => sub { my ($self) = @_; _cant_use($self, " in bitwise xor"); }, |
|
0
|
|
|
|
|
0
|
|
112
|
0
|
|
|
0
|
|
0
|
q[~~] => sub { my ($self) = @_; _cant_use($self, " in smartmatch"); }, |
|
0
|
|
|
|
|
0
|
|
113
|
10
|
|
|
10
|
|
3198
|
); |
|
10
|
|
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|
|
2726
|
|
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10
|
|
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|
|
526
|
|
114
|
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|
|
115
|
|
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|
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|
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# Throw an exception if still unchecked upon destruction... |
116
|
|
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|
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|
|
sub DESTROY { |
117
|
5
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|
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5
|
|
18983
|
my ($self) = @_; |
118
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|
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|
119
|
5
|
100
|
|
|
|
70
|
if (!$checked_for{$self}) { |
120
|
1
|
|
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|
|
4
|
$checked_for{$self} = 1; |
121
|
1
|
|
|
|
|
3
|
say {*STDERR} "$msg_for{$self} at $context_for{$self}[1] line $context_for{$self}[2]\n"; |
|
1
|
|
|
|
|
18
|
|
122
|
1
|
|
|
|
|
131
|
exit(); |
123
|
|
|
|
|
|
|
} |
124
|
|
|
|
|
|
|
} |
125
|
|
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|
126
|
|
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|
|
|
# Context-enquiry interface... |
127
|
3
|
|
|
3
|
1
|
12
|
sub subname { my ($self) = @_; return $context_for{$self}[3]; } |
|
3
|
|
|
|
|
20
|
|
128
|
3
|
|
|
3
|
1
|
11
|
sub line { my ($self) = @_; return $context_for{$self}[2]; } |
|
3
|
|
|
|
|
20
|
|
129
|
3
|
|
|
3
|
1
|
10
|
sub file { my ($self) = @_; return $context_for{$self}[1]; } |
|
3
|
|
|
|
|
21
|
|
130
|
|
|
|
|
|
|
|
131
|
|
|
|
|
|
|
sub context { |
132
|
3
|
|
|
3
|
1
|
10
|
my ($self) = @_; |
133
|
3
|
|
|
|
|
7
|
my ($subname, $file, $line) = @{$context_for{$self}}[3,1,2]; |
|
3
|
|
|
|
|
16
|
|
134
|
3
|
|
|
|
|
25
|
return "call to $subname at $file line $line"; |
135
|
|
|
|
|
|
|
} |
136
|
|
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|
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|
|
137
|
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138
|
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|
|
1; # Magic true value required at end of module |
139
|
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|
__END__ |