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package Pugs::Compiler::RegexPerl5; |
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# Version in Pugs::Compiler::Rule |
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# Documentation in the __END__ |
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use 5.006; |
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715
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use strict; |
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645
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use warnings; |
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9697
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#use base 'Pugs::Compiler::Regex'; |
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#use Pugs::Compiler::Regex; |
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#sub code { (+shift)->Pugs::Compiler::Regex::code( @_ ) } |
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# http://www.foo.be/docs/tpj/issues/vol2_3/tpj0203-0002.html |
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# is a good reference on the use of pos() |
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sub _quote_rule { |
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483
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483
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my $rule_source = shift; |
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483
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3397
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return 'm/' . $rule_source . '/' unless $rule_source =~ m{/}; |
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return 'm{' . $rule_source . '}' unless $rule_source =~ m/{/ || $rule_source =~ m/}/; |
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return 'm!' . $rule_source . '!' unless $rule_source =~ m/!/; |
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0
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return 'm[' . $rule_source . ']' unless $rule_source =~ m/\[/ || $rule_source =~ m/\]/; |
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return 'm^' . $rule_source . '^' unless $rule_source =~ m/^/; |
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} |
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sub compile { |
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0
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my ( $class, $rule_source, $param ) = @_; |
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my $self = { source => $rule_source }; |
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$param = ref $param ? { %$param } : {}; |
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370
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delete $param->{P5}; |
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161
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delete $param->{Perl5}; |
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1258
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$self->{continue} = delete $param->{continue} || |
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delete $param->{c} || |
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0; |
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my $compile_only = delete $param->{compile_only}; |
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warn "Error in rule: unknown parameter '$_'" |
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600
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for keys %$param; |
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# TODO - set "prior" |
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161
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my $captures = q' |
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for ( 1 .. $#+ ) { |
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push @match, Pugs::Runtime::Match->new({ |
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str => $_[1], from => \\(0+$-[$_]), to => \\(0+$+[$_]), |
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bool => \\1, match => [], named => {}, capture => undef, |
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}); |
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} |
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' . |
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#print "POS $bool ",(0+$-[0]),"-",(0+$+[0]),"\n";select(undef, undef, undef, 0.1); |
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'return Pugs::Runtime::Match->new({ |
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str => $_[1], from => \\(0+$-[0]), to => \\(0+$+[0]), |
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bool => \\$bool, match => \\@match, named => {}, capture => undef, |
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}); |
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'; |
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161
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1001
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$self->{perl5} = |
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q!do { |
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my $rule; |
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$rule = sub { # grammar, string, state, args |
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no warnings 'uninitialized'; |
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my $bool; |
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my @match; |
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return $rule->($_[0], \\$_[1], $_[2], $_[3]) |
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unless ref( $_[1] ); # backwards compatibility |
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#print "POS ${$_[1]} ",pos(${$_[1]}),"\n"; |
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#print "p5 $_[3]{p} \n"; |
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if( $_[3]{continue} ) { |
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pos(${$_[1]}) = $_[3]{p} |
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if defined $_[3]{p}; |
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$bool = ( ${$_[1]} =~ ! |
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. _quote_rule( $rule_source ) |
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. q(g \) ? 1 : 0; ) |
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. $captures |
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. q! |
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} |
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if ( defined $_[3]{p} ) { |
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pos(${$_[1]}) = $_[3]{p}; |
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$bool = ( ${$_[1]} =~ ! |
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. _quote_rule( |
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q(\\G\(?:) . $rule_source . ')' |
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) |
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. ' ) ? 1 : 0; ' |
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. $captures |
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. q! |
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} |
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else { |
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$bool = ( ${$_[1]} =~ ! |
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. _quote_rule( $rule_source ) |
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. q( \) ? 1 : 0; ) |
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. $captures . q( |
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} |
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}; |
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} |
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); |
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# print 'rule perl5: ', do{use Data::Dumper; Dumper($self->{perl5})}; |
99
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100
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161
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50
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523
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unless ( $compile_only ) { |
101
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161
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215
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local $@; |
102
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14
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14
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114
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$self->{code} = eval |
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14
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33
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14
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14
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9838
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14
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14
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99
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14
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14
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31
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14
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13
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9611
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14
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13
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100
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14
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13
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38
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14
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13
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6921773
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14
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13
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135
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14
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13
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34
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14
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13
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9418
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14
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91
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14
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31
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14
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15642
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13
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89
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13
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32
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13
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9795
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13
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85
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13
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31
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13
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12119
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13
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95
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13
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29
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13
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90104
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13
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137
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13
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43
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13
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11441
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13
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91
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13
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32
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13
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17936
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13
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90
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13
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365
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13
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9861
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13
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83
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13
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31
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13
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8856
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161
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26534
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103
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$self->{perl5}; |
104
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161
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50
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822
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die "Error in evaluation: $@\nSource:\n$self->{perl5}\n" if $@; |
105
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} |
106
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107
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161
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1842
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bless $self, 'Pugs::Compiler::Regex'; |
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} |
109
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110
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1; |
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112
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__END__ |