/usr/share/perl5/Types/XSD/Lite.pm is in libtypes-xsd-lite-perl 0.005-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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use 5.008003;
use strict;
use warnings;
use utf8;
BEGIN {
$Types::XSD::Lite::AUTHORITY = 'cpan:TOBYINK';
$Types::XSD::Lite::VERSION = '0.005';
}
use B qw(perlstring);
use Carp;
use Type::Utils;
use Type::Library -base, -declare => qw(
AnyType AnySimpleType String NormalizedString Token Language Boolean
Base64Binary HexBinary Float Double AnyURI Decimal
Integer NonPositiveInteger NegativeInteger Long Int Short Byte
NonNegativeInteger PositiveInteger UnsignedLong UnsignedInt
UnsignedShort UnsignedByte
);
use Types::Standard;
our $T;
sub create_range_check
{
my $class = $_[0]; eval "require $class";
my ($lower, $upper) = map(defined($_) ? $class->new($_) : $_, @_[1,2]);
my ($lexcl, $uexcl) = map(!!$_, @_[3,4]);
my $checker =
(defined $lower and defined $upper and $lexcl and $uexcl)
? sub { my $n = $class->new($_); $n > $lower and $n < $upper } :
(defined $lower and defined $upper and $lexcl)
? sub { my $n = $class->new($_); $n > $lower and $n <= $upper } :
(defined $lower and defined $upper and $uexcl)
? sub { my $n = $class->new($_); $n >= $lower and $n < $upper } :
(defined $lower and defined $upper)
? sub { my $n = $class->new($_); $n >= $lower and $n <= $upper } :
(defined $lower and $lexcl)
? sub { $class->new($_) > $lower } :
(defined $upper and $uexcl)
? sub { $class->new($_) < $upper } :
(defined $lower)
? sub { $class->new($_) >= $lower } :
(defined $upper)
? sub { $class->new($_) <= $upper } :
sub { !!1 };
my $inlined = sub {
my $var = $_[1];
my @checks;
push @checks, sprintf('$n >%s "%s"->new("%s")', $lexcl?'':'=', $class, $lower) if defined $lower;
push @checks, sprintf('$n <%s "%s"->new("%s")', $uexcl?'':'=', $class, $upper) if defined $upper;
my $code = sprintf(
'%s and do { my $n = "%s"->new(%s); %s }',
Types::Standard::Int()->inline_check($var),
$class,
$var,
join(" and ", @checks),
);
};
return (
constraint => $checker,
inlined => $inlined,
);
}
sub quick_range_check
{
my $class = $_[0]; eval "require $class";
my ($lower, $upper) = map(defined($_) ? $class->new($_) : $_, @_[1,2]);
my ($lexcl, $uexcl) = map(!!$_, @_[3,4]);
my $var = $_[5];
my @checks;
push @checks, sprintf('$n >%s "%s"->new("%s")', $lexcl?'':'=', $class, $lower) if defined $lower;
push @checks, sprintf('$n <%s "%s"->new("%s")', $uexcl?'':'=', $class, $upper) if defined $upper;
my $code = sprintf(
'do { my $n = "%s"->new(%s); %s }',
$class,
$var,
join(" and ", @checks),
);
}
sub hex_length
{
my $str = shift;
my $len = ($str =~ tr/0-9A-Fa-f//);
$len / 2;
}
sub b64_length
{
my $str = shift;
$str =~ s/[^a-zA-Z0-9+\x{2f}=]//g;
my $padding = ($str =~ tr/=//);
(length($str) * 3 / 4) - $padding;
}
our @patterns; my $pattern_i = -1;
our @assertions; my $assertion_i = -1;
our %facets = (
assertions => sub {
my ($o, $var) = @_;
return unless exists $o->{assertions};
my $ass = delete $o->{assertions};
$ass = [$ass] unless ref($ass) eq q(ARRAY);
my @r;
for my $a (@$ass)
{
require Types::TypeTiny;
if (Types::TypeTiny::CodeLike()->check($a))
{
$assertion_i++;
$assertions[$assertion_i] = $a;
push @r,
($var eq '$_')
? sprintf('$Types::XSD::Lite::assertions[%d]->(%s)', $assertion_i, $var)
: sprintf('do { local $_ = %s; $Types::XSD::Lite::assertions[%d]->(%s) }', $var, $assertion_i, $var);
}
elsif (Types::TypeTiny::StringLike()->check($a))
{
push @r,
($var eq '$_')
? "do { $a }"
: "do { local \$_ = $var; $a }";
}
else
{
croak "assertions should be strings or coderefs";
}
}
join ' && ', map "($_)", @r;
},
length => sub {
my ($o, $var) = @_;
return unless exists $o->{length};
sprintf('length(%s)==%d', $var, delete $o->{length});
},
maxLength => sub {
my ($o, $var) = @_;
return unless exists $o->{maxLength};
sprintf('length(%s)<=%d', $var, delete $o->{maxLength});
},
minLength => sub {
my ($o, $var) = @_;
return unless exists $o->{minLength};
sprintf('length(%s)>=%d', $var, delete $o->{minLength});
},
lengthHex => sub {
my ($o, $var) = @_;
return unless exists $o->{length};
sprintf('Types::XSD::Lite::hex_length(%s)==%d', $var, delete $o->{length});
},
maxLengthHex => sub {
my ($o, $var) = @_;
return unless exists $o->{maxLength};
sprintf('Types::XSD::Lite::hex_length(%s)<=%d', $var, delete $o->{maxLength});
},
minLengthHex => sub {
my ($o, $var) = @_;
return unless exists $o->{minLength};
sprintf('Types::XSD::Lite::hex_length(%s)>=%d', $var, delete $o->{minLength});
},
lengthQName => sub {
my ($o, $var) = @_;
return unless exists $o->{length};
delete $o->{length};
"!!1"
},
maxLengthQName => sub {
my ($o, $var) = @_;
return unless exists $o->{maxLength};
delete $o->{maxLength};
"!!1"
},
minLengthQName => sub {
my ($o, $var) = @_;
return unless exists $o->{minLength};
delete $o->{minLength};
"!!1"
},
lengthB64 => sub {
my ($o, $var) = @_;
return unless exists $o->{length};
sprintf('Types::XSD::Lite::b64_length(%s)==%d', $var, delete $o->{length});
},
maxLengthB64 => sub {
my ($o, $var) = @_;
return unless exists $o->{maxLength};
sprintf('Types::XSD::Lite::b64_length(%s)<=%d', $var, delete $o->{maxLength});
},
minLengthB64 => sub {
my ($o, $var) = @_;
return unless exists $o->{minLength};
sprintf('Types::XSD::Lite::b64_length(%s)>=%d', $var, delete $o->{minLength});
},
pattern => sub {
my ($o, $var) = @_;
return unless exists $o->{pattern};
$patterns[++$pattern_i] = delete $o->{pattern};
sprintf('%s =~ $Types::XSD::Lite::patterns[%d]', $var, $pattern_i);
},
enumeration => sub {
my ($o, $var) = @_;
return unless exists $o->{enumeration};
my $re = join "|", map quotemeta, @{delete $o->{enumeration}};
sprintf('%s =~ m/^(?:%s)$/sm', $var, $re);
},
whiteSpace => sub {
my ($o, $var) = @_;
return unless exists $o->{whiteSpace};
delete($o->{whiteSpace});
"!!1";
},
maxInclusive => sub {
my ($o, $var) = @_;
return unless exists $o->{maxInclusive};
quick_range_check("Math::BigInt", undef, delete($o->{maxInclusive}), undef, undef, $var);
},
minInclusive => sub {
my ($o, $var) = @_;
return unless exists $o->{minInclusive};
quick_range_check("Math::BigInt", delete($o->{minInclusive}), undef, undef, undef, $var);
},
maxExclusive => sub {
my ($o, $var) = @_;
return unless exists $o->{maxExclusive};
quick_range_check("Math::BigInt", undef, delete($o->{maxExclusive}), undef, 1, $var);
},
minExclusive => sub {
my ($o, $var) = @_;
return unless exists $o->{minExclusive};
quick_range_check("Math::BigInt", delete($o->{minExclusive}), undef, 1, undef, $var);
},
maxInclusiveFloat => sub {
my ($o, $var) = @_;
return unless exists $o->{maxInclusive};
quick_range_check("Math::BigFloat", undef, delete($o->{maxInclusive}), undef, undef, $var);
},
minInclusiveFloat => sub {
my ($o, $var) = @_;
return unless exists $o->{minInclusive};
quick_range_check("Math::BigFloat", delete($o->{minInclusive}), undef, undef, undef, $var);
},
maxExclusiveFloat => sub {
my ($o, $var) = @_;
return unless exists $o->{maxExclusive};
quick_range_check("Math::BigFloat", undef, delete($o->{maxExclusive}), undef, 1, $var);
},
minExclusiveFloat => sub {
my ($o, $var) = @_;
return unless exists $o->{minExclusive};
quick_range_check("Math::BigFloat", delete($o->{minExclusive}), undef, 1, undef, $var);
},
maxInclusiveStr => sub {
my ($o, $var) = @_;
return unless exists $o->{maxInclusive};
sprintf('%s le %s', $var, perlstring delete $o->{maxInclusive});
},
minInclusiveStr => sub {
my ($o, $var) = @_;
return unless exists $o->{minInclusive};
sprintf('%s ge %s', $var, perlstring delete $o->{minInclusive});
},
maxExclusiveStr => sub {
my ($o, $var) = @_;
return unless exists $o->{maxExclusive};
sprintf('%s lt %s', $var, perlstring delete $o->{maxExclusive});
},
minExclusiveStr => sub {
my ($o, $var) = @_;
return unless exists $o->{minExclusive};
sprintf('%s gt %s', $var, perlstring delete $o->{minExclusive});
},
totalDigits => sub {
my ($o, $var) = @_;
return unless exists $o->{totalDigits};
sprintf('do { no warnings "uninitialized"; my $tmp = %s; ($tmp=~tr/0-9//) <= %d }', $var, delete $o->{totalDigits});
},
fractionDigits => sub {
my ($o, $var) = @_;
return unless exists $o->{fractionDigits};
sprintf('do { no warnings "uninitialized"; my (undef, $tmp) = split /\\./, %s; ($tmp=~tr/0-9//) <= %d }', $var, delete $o->{fractionDigits});
},
);
sub facet
{
my $self = pop;
my @facets = ("assertions", @_);
my $regexp = qr{^${\(join "|", map quotemeta, @facets)}$}ms;
my $name = "$self";
my $inline_generator = sub
{
my %p_not_destroyed = @_;
return sub {
local $T = $_[0]->parent;
my %p = %p_not_destroyed; # copy;
my $var = $_[1];
my $r = sprintf(
'(%s)',
join(
' and ',
$self->inline_check($var),
map($facets{$_}->(\%p, $var), @facets),
),
);
croak sprintf(
'Attempt to parameterize type "%s" with unrecognised parameter%s %s',
$name,
scalar(keys %p)==1 ? '' : 's',
join(", ", map(qq["$_"], sort keys %p)),
) if keys %p;
return $r;
};
};
$self->{inline_generator} = $inline_generator;
$self->{constraint_generator} = sub {
my $sub = sprintf(
'sub { %s }',
$inline_generator->(@_)->($self, '$_[0]'),
);
eval($sub) or croak "could not build sub: $@\n\nCODE: $sub\n";
};
$self->{name_generator} = sub {
my ($s, %a) = @_;
sprintf('%s[%s]', $s, join q[,], map sprintf("%s=>%s", $_, perlstring $a{$_}), sort keys %a);
};
return if $self->is_anon;
no strict qw( refs );
no warnings qw( redefine prototype );
*{$self->library . '::' . $self->name} = $self->library->_mksub($self);
}
declare AnyType, as Types::Standard::Any;
declare AnySimpleType, as Types::Standard::Value;
facet qw( length minLength maxLength pattern enumeration whiteSpace ),
declare String, as Types::Standard::Str;
facet qw( length minLength maxLength pattern enumeration whiteSpace ),
declare NormalizedString, as Types::Standard::StrMatch[qr{^[^\t\r\n]*$}sm];
facet qw( length minLength maxLength pattern enumeration whiteSpace ),
declare Token, as intersection([
NormalizedString,
Types::Standard::StrMatch([qr{^\s}sm])->complementary_type,
Types::Standard::StrMatch([qr{\s$}sm])->complementary_type,
Types::Standard::StrMatch([qr{\s{2}}sm])->complementary_type,
]);
facet qw( length minLength maxLength pattern enumeration whiteSpace ),
declare Language, as Types::Standard::StrMatch[qr{^[a-zA-Z]{1,8}(?:-[a-zA-Z0-9]{1,8})*$}sm];
facet qw( pattern whiteSpace ),
declare Boolean, as Types::Standard::StrMatch[qr{^(?:true|false|0|1)$}ism];
facet qw( lengthB64 minLengthB64 maxLengthB64 pattern enumeration whiteSpace ),
declare Base64Binary, as Types::Standard::StrMatch[qr{^[a-zA-Z0-9+\x{2f}=\s]+$}ism];
facet qw( lengthHex minLengthHex maxLengthHex pattern enumeration whiteSpace ),
declare HexBinary, as Types::Standard::StrMatch[qr{^[a-fA-F0-9]+$}ism];
facet qw( pattern enumeration whiteSpace maxInclusiveFloat maxExclusiveFloat minInclusiveFloat minExclusiveFloat ),
declare Float, as Types::Standard::Num;
facet qw( pattern enumeration whiteSpace maxInclusiveFloat maxExclusiveFloat minInclusiveFloat minExclusiveFloat ),
declare Double, as Types::Standard::Num;
facet qw( length minLength maxLength pattern enumeration whiteSpace ),
declare AnyURI, as Types::Standard::Str;
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusiveFloat maxExclusiveFloat minInclusiveFloat minExclusiveFloat ),
declare Decimal, as Types::Standard::StrMatch[qr{^(?:(?:[+-]?[0-9]+(?:\.[0-9]+)?)|(?:[+-]?\.[0-9]+))$}ism];
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare Integer, as Types::Standard::Int;
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare NonPositiveInteger, as Integer, create_range_check("Math::BigInt", undef, 0);
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare NegativeInteger, as NonPositiveInteger, create_range_check("Math::BigInt", undef, -1);
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare NonNegativeInteger, as Integer, create_range_check("Math::BigInt", 0, undef);
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare PositiveInteger, as NonNegativeInteger, create_range_check("Math::BigInt", 1, undef);
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare Long, as Integer, create_range_check("Math::BigInt", q[-9223372036854775808], q[9223372036854775807]);
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare Int, as Long, create_range_check("Math::BigInt", q[-2147483648], q[2147483647]);
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare Short, as Int, create_range_check("Math::BigInt", q[-32768], q[32767]);
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare Byte, as Short, create_range_check("Math::BigInt", q[-128], q[127]);
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare UnsignedLong, as NonNegativeInteger, create_range_check("Math::BigInt", q[0], q[18446744073709551615]);
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare UnsignedInt, as UnsignedLong, create_range_check("Math::BigInt", q[0], q[4294967295]);
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare UnsignedShort, as UnsignedInt, create_range_check("Math::BigInt", q[0], q[65535]);
facet qw( totalDigits fractionDigits pattern whiteSpace enumeration maxInclusive maxExclusive minInclusive minExclusive ),
declare UnsignedByte, as UnsignedShort, create_range_check("Math::BigInt", q[0], q[255]);
1;
__END__
=pod
=encoding utf-8
=begin stopwords
datatypes
datetime-related
QNames
IDRefs
whitespace
datetime/duration-related
=end stopwords
=head1 NAME
Types::XSD::Lite - type constraints based on a subset of XML schema datatypes
=head1 SYNOPSIS
package Person;
use Moo;
use Types::XSD::Lite qw( PositiveInteger String );
has name => (is => "ro", isa => String[ minLength => 1 ]);
has age => (is => "ro", isa => PositiveInteger);
=head1 DESCRIPTION
These are all the type constraints from XML Schema that could be
implemented without introducing extra runtime dependencies (above
L<Type::Tiny>). That's basically all of the XSD types, except
datetime-related ones, and XML-specific ones (QNames, IDRefs, etc).
If you want the full set of XML Schema types, see L<Types::XSD>.
=head2 Type Constraints
I've added some quick explanations of what each type is, but for
details, see the XML Schema specification.
=over
=item C<< AnyType >>
As per C<Any> from L<Types::Standard>.
=item C<< AnySimpleType >>
As per C<Value> from L<Types::Standard>.
=item C<< String >>
As per C<Str> from L<Types::Standard>.
=item C<< NormalizedString >>
A string containing no line breaks, carriage returns or tabs.
=item C<< Token >>
Like C<NormalizedString>, but also no leading or trailing space, and no
doubled spaces (i.e. not C<< /\s{2,}/ >>).
=item C<< Language >>
An RFC 3066 language code.
=item C<< Boolean >>
Allows C<< "true" >>, C<< "false" >>, C<< "1" >> and C<< "0" >>
(case-insensitively).
Gotcha: The string C<< "false" >> evaluates to true in Perl. You probably
want to use C<< Bool >> from L<Types::Standard> instead.
=item C<< Base64Binary >>
Strings which are valid Base64 data. Allows whitespace.
Gotcha: If you parameterize this with C<length>, C<maxLength> or C<minLength>,
it is the length of the I<decoded> string which will be checked.
=item C<< HexBinary >>
Strings which are valid hexadecimal data. Disallows whitespace; disallows
leading C<< 0x >>.
Gotcha: If you parameterize this with C<length>, C<maxLength> or C<minLength>,
it is the length of the I<decoded> string which will be checked.
=item C<< Float >>
As per C<Num> from L<Types::Standard>.
=item C<< Double >>
As per C<Num> from L<Types::Standard>.
=item C<< AnyURI >>
Any absolute I<< or relative >> URI. Effectively, any string at all!
=item C<< Decimal >>
Numbers possibly including a decimal point, but not allowing exponential
notation (e.g. C<< "3.14e-3" >>).
=item C<< Integer >>
As per C<Int> from L<Types::Standard>.
=item C<< NonPositiveInteger >>
An C<Integer> 0 or below.
=item C<< NegativeInteger >>
An C<Integer> -1 or below.
=item C<< Long >>
An C<Integer> between -9223372036854775808 and 9223372036854775807 (inclusive).
=item C<< Int >>
An C<Integer> between -2147483648 and 2147483647 (inclusive).
=item C<< Short >>
An C<Integer> between -32768 and 32767 (inclusive).
=item C<< Byte >>
An C<Integer> between -128 and 127 (inclusive).
=item C<< NonNegativeInteger >>
An C<Integer> 0 or above.
=item C<< PositiveInteger >>
An C<Integer> 1 or above.
=item C<< UnsignedLong >>
A C<NonNegativeInteger> between 0 and 18446744073709551615 (inclusive).
=item C<< UnsignedInt >>
A C<NonNegativeInteger> between 0 and 4294967295 (inclusive).
=item C<< UnsignedShort >>
A C<NonNegativeInteger> between 0 and 65535 (inclusive).
=item C<< UnsignedByte >>
A C<NonNegativeInteger> between 0 and 255 (inclusive).
=back
=head2 Parameters
Datatypes can be parameterized using the facets defined by XML Schema. For
example:
use Types::XSD::Lite qw( String Decimal PositiveInteger Token );
my @sizes = qw( XS S M L XL XXL );
has name => (is => "ro", isa => String[ minLength => 1 ]);
has price => (is => "ro", isa => Decimal[ fractionDigits => 2 ]);
has rating => (is => "ro", isa => PositiveInteger[ maxInclusive => 5 ]);
has size => (is => "ro", isa => Token[ enumeration => \@sizes ]);
The following facets exist, but not all facets are supported for all
datatypes. (The module will croak if you try to use an unsupported facet.)
=over
=item C<< enumeration >>
An arrayref of allowable values. You should probably use L<Type::Tiny::Enum>
instead.
=item C<< pattern >>
A regular expression that the value is expected to conform to. Use a normal
Perl quoted regexp:
Token[ pattern => qr{^[a-z]+$} ]
=item C<< whiteSpace >>
The C<whiteSpace> facet is ignored as I'm not entirely sure what it should
do. It perhaps makes sense for coercions, but this module doesn't define any
coercions.
=item C<< assertions >>
An arrayref of arbitrary additional restrictions, expressed as strings of
Perl code or coderefs operating on C<< $_ >>.
For example:
Integer[
assertions => [
'$_ % 3 == 0', # multiple of three, and...
sub { is_nice($_) }, # is nice (whatever that means)
],
],
Strings of Perl code will result in faster-running type constraints.
=item C<< length >>, C<< maxLength >>, C<< minLength >>
Restrict the length of a value. For example C<< Integer[length=>2] >> allows
C<10>, C<99> and C<-1>, but not C<100>, C<9> or C<-10>.
Types::XSD::Lite won't prevent you from making ridiculous constraints such
as C<< String[ maxLength => 1, minLength => 2 ] >>.
Note that on C<HexBinary> and C<Base64Binary> types, the lengths apply to
the decoded string. Length restrictions are silently ignored for C<QName>
and C<Notation> because the W3C doesn't think you should care what length
these datatypes are.
=item C<< maxInclusive >>, C<< minInclusive >>, C<< maxExclusive >>, C<< minExclusive >>
Supported for numeric types and datetime/duration-related types.
Note that to be super-correct, the C<< {max,min}{Inclusive,Exclusive} >>
facets for numeric types are performed by passing the numbers through
L<Math::BigInt> or L<Math::BigFloat>, so may be a little slow.
=item C<< totalDigits >>
For a decimal (or type derived from decimals) specifies that the total number
of digits for the value must be at most this number. Given
C<< Decimal[ totalDigits => 3 ] >>, C<1.23>, C<12.3>, C<123>, C<1.2> and C<1>
are all allowable; C<1.234> is not. C<1.230> is also not, but this may change
in a future version.
=item C<< fractionDigits >>
Like C<totalDigits> but ignores digits before the decimal point.
=back
=head1 CAVEATS
This distribution has virtually no test suite, in the hope that Types::XSD's
test suite will shake out any bugs in this module.
=head1 BUGS
Please report any bugs to
L<http://rt.cpan.org/Dist/Display.html?Queue=Types-XSD-Lite>.
=head1 SEE ALSO
L<Type::Tiny>, L<Types::Standard>, L<Types::XSD>.
=over
=item *
L<http://www.w3.org/TR/xmlschema-2/> Datatypes in XML Schema 1.0
=item *
L<http://www.w3.org/TR/xmlschema11-2/> Datatypes in XML Schema 1.1
=back
=head1 AUTHOR
Toby Inkster E<lt>tobyink@cpan.orgE<gt>.
=head1 COPYRIGHT AND LICENCE
This software is copyright (c) 2013-2014 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=head1 DISCLAIMER OF WARRANTIES
THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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