Repository: incubator-hawq
Updated Branches:
  refs/heads/2.0.0.0-incubating 8eff60336 -> b7c8717bd


http://git-wip-us.apache.org/repos/asf/incubator-hawq/blob/b7c8717b/src/include/catalog/JSON/PP.pm
----------------------------------------------------------------------
diff --git a/src/include/catalog/JSON/PP.pm b/src/include/catalog/JSON/PP.pm
deleted file mode 100644
index 8017a23..0000000
--- a/src/include/catalog/JSON/PP.pm
+++ /dev/null
@@ -1,2191 +0,0 @@
-package JSON::PP;
-
-# JSON-2.0
-
-use 5.005;
-use strict;
-use base qw(Exporter);
-use overload ();
-
-use Carp ();
-use B ();
-#use Devel::Peek;
-
-$JSON::PP::VERSION = '2.27008';
-
-@JSON::PP::EXPORT = qw(encode_json decode_json from_json to_json);
-
-# instead of hash-access, i tried index-access for speed.
-# but this method is not faster than what i expected. so it will be changed.
-
-use constant P_ASCII                => 0;
-use constant P_LATIN1               => 1;
-use constant P_UTF8                 => 2;
-use constant P_INDENT               => 3;
-use constant P_CANONICAL            => 4;
-use constant P_SPACE_BEFORE         => 5;
-use constant P_SPACE_AFTER          => 6;
-use constant P_ALLOW_NONREF         => 7;
-use constant P_SHRINK               => 8;
-use constant P_ALLOW_BLESSED        => 9;
-use constant P_CONVERT_BLESSED      => 10;
-use constant P_RELAXED              => 11;
-
-use constant P_LOOSE                => 12;
-use constant P_ALLOW_BIGNUM         => 13;
-use constant P_ALLOW_BAREKEY        => 14;
-use constant P_ALLOW_SINGLEQUOTE    => 15;
-use constant P_ESCAPE_SLASH         => 16;
-use constant P_AS_NONBLESSED        => 17;
-
-use constant P_ALLOW_UNKNOWN        => 18;
-
-use constant OLD_PERL => $] < 5.008 ? 1 : 0;
-
-BEGIN {
-    my @xs_compati_bit_properties = qw(
-            latin1 ascii utf8 indent canonical space_before space_after 
allow_nonref shrink
-            allow_blessed convert_blessed relaxed allow_unknown
-    );
-    my @pp_bit_properties = qw(
-            allow_singlequote allow_bignum loose
-            allow_barekey escape_slash as_nonblessed
-    );
-
-    # Perl version check, Unicode handling is enable?
-    # Helper module sets @JSON::PP::_properties.
-
-    my $helper = $] >= 5.008 ? 'JSON::PP58'
-               : $] >= 5.006 ? 'JSON::PP56'
-               :               'JSON::PP5005'
-               ;
-
-    eval qq| require $helper |;
-    if ($@) { Carp::croak $@; }
-
-    for my $name (@xs_compati_bit_properties, @pp_bit_properties) {
-        my $flag_name = 'P_' . uc($name);
-
-        eval qq/
-            sub $name {
-                my \$enable = defined \$_[1] ? \$_[1] : 1;
-
-                if (\$enable) {
-                    \$_[0]->{PROPS}->[$flag_name] = 1;
-                }
-                else {
-                    \$_[0]->{PROPS}->[$flag_name] = 0;
-                }
-
-                \$_[0];
-            }
-
-            sub get_$name {
-                \$_[0]->{PROPS}->[$flag_name] ? 1 : '';
-            }
-        /;
-    }
-
-}
-
-
-
-# Functions
-
-my %encode_allow_method
-     = map {($_ => 1)} qw/utf8 pretty allow_nonref latin1 self_encode 
escape_slash
-                          allow_blessed convert_blessed indent indent_length 
allow_bignum
-                          as_nonblessed
-                        /;
-my %decode_allow_method
-     = map {($_ => 1)} qw/utf8 allow_nonref loose allow_singlequote 
allow_bignum
-                          allow_barekey max_size relaxed/;
-
-
-my $JSON; # cache
-
-sub encode_json ($) { # encode
-    ($JSON ||= __PACKAGE__->new->utf8)->encode(@_);
-}
-
-
-sub decode_json { # decode
-    ($JSON ||= __PACKAGE__->new->utf8)->decode(@_);
-}
-
-# Obsoleted
-
-sub to_json($) {
-   Carp::croak ("JSON::PP::to_json has been renamed to encode_json.");
-}
-
-
-sub from_json($) {
-   Carp::croak ("JSON::PP::from_json has been renamed to decode_json.");
-}
-
-
-# Methods
-
-sub new {
-    my $class = shift;
-    my $self  = {
-        max_depth   => 512,
-        max_size    => 0,
-        indent      => 0,
-        FLAGS       => 0,
-        fallback      => sub { encode_error('Invalid value. JSON can only 
reference.') },
-        indent_length => 3,
-    };
-
-    bless $self, $class;
-}
-
-
-sub encode {
-    return $_[0]->PP_encode_json($_[1]);
-}
-
-
-sub decode {
-    return $_[0]->PP_decode_json($_[1], 0x00000000);
-}
-
-
-sub decode_prefix {
-    return $_[0]->PP_decode_json($_[1], 0x00000001);
-}
-
-
-# accessor
-
-
-# pretty printing
-
-sub pretty {
-    my ($self, $v) = @_;
-    my $enable = defined $v ? $v : 1;
-
-    if ($enable) { # indent_length(3) for JSON::XS compatibility
-        $self->indent(1)->indent_length(3)->space_before(1)->space_after(1);
-    }
-    else {
-        $self->indent(0)->space_before(0)->space_after(0);
-    }
-
-    $self;
-}
-
-# etc
-
-sub max_depth {
-    my $max  = defined $_[1] ? $_[1] : 0x80000000;
-    $_[0]->{max_depth} = $max;
-    $_[0];
-}
-
-
-sub get_max_depth { $_[0]->{max_depth}; }
-
-
-sub max_size {
-    my $max  = defined $_[1] ? $_[1] : 0;
-    $_[0]->{max_size} = $max;
-    $_[0];
-}
-
-
-sub get_max_size { $_[0]->{max_size}; }
-
-
-sub filter_json_object {
-    $_[0]->{cb_object} = defined $_[1] ? $_[1] : 0;
-    $_[0]->{F_HOOK} = ($_[0]->{cb_object} or $_[0]->{cb_sk_object}) ? 1 : 0;
-    $_[0];
-}
-
-sub filter_json_single_key_object {
-    if (@_ > 1) {
-        $_[0]->{cb_sk_object}->{$_[1]} = $_[2];
-    }
-    $_[0]->{F_HOOK} = ($_[0]->{cb_object} or $_[0]->{cb_sk_object}) ? 1 : 0;
-    $_[0];
-}
-
-sub indent_length {
-    if (!defined $_[1] or $_[1] > 15 or $_[1] < 0) {
-        Carp::carp "The acceptable range of indent_length() is 0 to 15.";
-    }
-    else {
-        $_[0]->{indent_length} = $_[1];
-    }
-    $_[0];
-}
-
-sub get_indent_length {
-    $_[0]->{indent_length};
-}
-
-sub sort_by {
-    $_[0]->{sort_by} = defined $_[1] ? $_[1] : 1;
-    $_[0];
-}
-
-sub allow_bigint {
-    Carp::carp("allow_bigint() is obsoleted. use allow_bignum() insted.");
-}
-
-###############################
-
-###
-### Perl => JSON
-###
-
-
-{ # Convert
-
-    my $max_depth;
-    my $indent;
-    my $ascii;
-    my $latin1;
-    my $utf8;
-    my $space_before;
-    my $space_after;
-    my $canonical;
-    my $allow_blessed;
-    my $convert_blessed;
-
-    my $indent_length;
-    my $escape_slash;
-    my $bignum;
-    my $as_nonblessed;
-
-    my $depth;
-    my $indent_count;
-    my $keysort;
-
-
-    sub PP_encode_json {
-        my $self = shift;
-        my $obj  = shift;
-
-        $indent_count = 0;
-        $depth        = 0;
-
-        my $idx = $self->{PROPS};
-
-        ($ascii, $latin1, $utf8, $indent, $canonical, $space_before, 
$space_after, $allow_blessed,
-            $convert_blessed, $escape_slash, $bignum, $as_nonblessed)
-         = @{$idx}[P_ASCII .. P_SPACE_AFTER, P_ALLOW_BLESSED, 
P_CONVERT_BLESSED,
-                    P_ESCAPE_SLASH, P_ALLOW_BIGNUM, P_AS_NONBLESSED];
-
-        ($max_depth, $indent_length) = @{$self}{qw/max_depth indent_length/};
-
-        $keysort = $canonical ? sub { $a cmp $b } : undef;
-
-        if ($self->{sort_by}) {
-            $keysort = ref($self->{sort_by}) eq 'CODE' ? $self->{sort_by}
-                     : $self->{sort_by} =~ /\D+/       ? $self->{sort_by}
-                     : sub { $a cmp $b };
-        }
-
-        encode_error("hash- or arrayref expected (not a simple scalar, use 
allow_nonref to allow this)")
-             if(!ref $obj and !$idx->[ P_ALLOW_NONREF ]);
-
-        my $str  = $self->object_to_json($obj);
-
-        $str .= "\n" if ( $indent ); # JSON::XS 2.26 compatible
-
-        unless ($ascii or $latin1 or $utf8) {
-            utf8::upgrade($str);
-        }
-
-        if ($idx->[ P_SHRINK ]) {
-            utf8::downgrade($str, 1);
-        }
-
-        return $str;
-    }
-
-
-    sub object_to_json {
-        my ($self, $obj) = @_;
-        my $type = ref($obj);
-
-        if($type eq 'HASH'){
-            return $self->hash_to_json($obj);
-        }
-        elsif($type eq 'ARRAY'){
-            return $self->array_to_json($obj);
-        }
-        elsif ($type) { # blessed object?
-            if (blessed($obj)) {
-
-                return $self->value_to_json($obj) if ( 
$obj->isa('JSON::PP::Boolean') );
-
-                if ( $convert_blessed and $obj->can('TO_JSON') ) {
-                    my $result = $obj->TO_JSON();
-                    if ( defined $result and overload::Overloaded( $obj ) ) {
-                        if ( overload::StrVal( $obj ) eq $result ) {
-                            encode_error( sprintf(
-                                "%s::TO_JSON method returned same object as 
was passed instead of a new one",
-                                ref $obj
-                            ) );
-                        }
-                    }
-
-                    return $self->object_to_json( $result );
-                }
-
-                return "$obj" if ( $bignum and _is_bignum($obj) );
-                return $self->blessed_to_json($obj) if ($allow_blessed and 
$as_nonblessed); # will be removed.
-
-                encode_error( sprintf("encountered object '%s', but neither 
allow_blessed "
-                    . "nor convert_blessed settings are enabled", $obj)
-                ) unless ($allow_blessed);
-
-                return 'null';
-            }
-            else {
-                return $self->value_to_json($obj);
-            }
-        }
-        else{
-            return $self->value_to_json($obj);
-        }
-    }
-
-
-    sub hash_to_json {
-        my ($self, $obj) = @_;
-        my @res;
-
-        encode_error("json text or perl structure exceeds maximum nesting 
level (max_depth set too low?)")
-                                         if (++$depth > $max_depth);
-
-        my ($pre, $post) = $indent ? $self->_up_indent() : ('', '');
-        my $del = ($space_before ? ' ' : '') . ':' . ($space_after ? ' ' : '');
-
-        for my $k ( _sort( $obj ) ) {
-            if ( OLD_PERL ) { utf8::decode($k) } # key for Perl 5.6 / be 
optimized
-            push @res, string_to_json( $self, $k )
-                          .  $del
-                          . ( $self->object_to_json( $obj->{$k} ) || 
$self->value_to_json( $obj->{$k} ) );
-        }
-
-        --$depth;
-        $self->_down_indent() if ($indent);
-
-        return   '{' . ( @res ? $pre : '' ) . ( @res ? join( ",$pre", @res ) . 
$post : '' )  . '}';
-    }
-
-
-    sub array_to_json {
-        my ($self, $obj) = @_;
-        my @res;
-
-        encode_error("json text or perl structure exceeds maximum nesting 
level (max_depth set too low?)")
-                                         if (++$depth > $max_depth);
-
-        my ($pre, $post) = $indent ? $self->_up_indent() : ('', '');
-
-        for my $v (@$obj){
-            push @res, $self->object_to_json($v) || $self->value_to_json($v);
-        }
-
-        --$depth;
-        $self->_down_indent() if ($indent);
-
-        return '[' . ( @res ? $pre : '' ) . ( @res ? join( ",$pre", @res ) . 
$post : '' ) . ']';
-    }
-
-
-    sub value_to_json {
-        my ($self, $value) = @_;
-
-        return 'null' if(!defined $value);
-
-        my $b_obj = B::svref_2object(\$value);  # for round trip problem
-        my $flags = $b_obj->FLAGS;
-
-        return $value # as is 
-            if $flags & ( B::SVp_IOK | B::SVp_NOK ) and !( $flags & B::SVp_POK 
); # SvTYPE is IV or NV?
-
-        my $type = ref($value);
-
-        if(!$type){
-            return string_to_json($self, $value);
-        }
-        elsif( blessed($value) and  $value->isa('JSON::PP::Boolean') ){
-            return $$value == 1 ? 'true' : 'false';
-        }
-        elsif ($type) {
-            if ((overload::StrVal($value) =~ /=(\w+)/)[0]) {
-                return $self->value_to_json("$value");
-            }
-
-            if ($type eq 'SCALAR' and defined $$value) {
-                return   $$value eq '1' ? 'true'
-                       : $$value eq '0' ? 'false'
-                       : $self->{PROPS}->[ P_ALLOW_UNKNOWN ] ? 'null'
-                       : encode_error("cannot encode reference to scalar");
-            }
-
-             if ( $self->{PROPS}->[ P_ALLOW_UNKNOWN ] ) {
-                 return 'null';
-             }
-             else {
-                 if ( $type eq 'SCALAR' or $type eq 'REF' ) {
-                    encode_error("cannot encode reference to scalar");
-                 }
-                 else {
-                    encode_error("encountered $value, but JSON can only 
represent references to arrays or hashes");
-                 }
-             }
-
-        }
-        else {
-            return $self->{fallback}->($value)
-                 if ($self->{fallback} and ref($self->{fallback}) eq 'CODE');
-            return 'null';
-        }
-
-    }
-
-
-    my %esc = (
-        "\n" => '\n',
-        "\r" => '\r',
-        "\t" => '\t',
-        "\f" => '\f',
-        "\b" => '\b',
-        "\"" => '\"',
-        "\\" => '\\\\',
-        "\'" => '\\\'',
-    );
-
-
-    sub string_to_json {
-        my ($self, $arg) = @_;
-
-        $arg =~ s/([\x22\x5c\n\r\t\f\b])/$esc{$1}/g;
-        $arg =~ s/\//\\\//g if ($escape_slash);
-        $arg =~ s/([\x00-\x08\x0b\x0e-\x1f])/'\\u00' . unpack('H2', $1)/eg;
-
-        if ($ascii) {
-            $arg = JSON_PP_encode_ascii($arg);
-        }
-
-        if ($latin1) {
-            $arg = JSON_PP_encode_latin1($arg);
-        }
-
-        if ($utf8) {
-            utf8::encode($arg);
-        }
-
-        return '"' . $arg . '"';
-    }
-
-
-    sub blessed_to_json {
-        my $reftype = reftype($_[1]) || '';
-        if ($reftype eq 'HASH') {
-            return $_[0]->hash_to_json($_[1]);
-        }
-        elsif ($reftype eq 'ARRAY') {
-            return $_[0]->array_to_json($_[1]);
-        }
-        else {
-            return 'null';
-        }
-    }
-
-
-    sub encode_error {
-        my $error  = shift;
-        Carp::croak "$error";
-    }
-
-
-    sub _sort {
-        defined $keysort ? (sort $keysort (keys %{$_[0]})) : keys %{$_[0]};
-    }
-
-
-    sub _up_indent {
-        my $self  = shift;
-        my $space = ' ' x $indent_length;
-
-        my ($pre,$post) = ('','');
-
-        $post = "\n" . $space x $indent_count;
-
-        $indent_count++;
-
-        $pre = "\n" . $space x $indent_count;
-
-        return ($pre,$post);
-    }
-
-
-    sub _down_indent { $indent_count--; }
-
-
-    sub PP_encode_box {
-        {
-            depth        => $depth,
-            indent_count => $indent_count,
-        };
-    }
-
-} # Convert
-
-
-sub _encode_ascii {
-    join('',
-        map {
-            $_ <= 127 ?
-                chr($_) :
-            $_ <= 65535 ?
-                sprintf('\u%04x', $_) : sprintf('\u%x\u%x', 
_encode_surrogates($_));
-        } unpack('U*', $_[0])
-    );
-}
-
-
-sub _encode_latin1 {
-    join('',
-        map {
-            $_ <= 255 ?
-                chr($_) :
-            $_ <= 65535 ?
-                sprintf('\u%04x', $_) : sprintf('\u%x\u%x', 
_encode_surrogates($_));
-        } unpack('U*', $_[0])
-    );
-}
-
-
-sub _encode_surrogates { # from perlunicode
-    my $uni = $_[0] - 0x10000;
-    return ($uni / 0x400 + 0xD800, $uni % 0x400 + 0xDC00);
-}
-
-
-sub _is_bignum {
-    $_[0]->isa('Math::BigInt') or $_[0]->isa('Math::BigFloat');
-}
-
-
-
-#
-# JSON => Perl
-#
-
-my $max_intsize;
-
-BEGIN {
-    my $checkint = 1111;
-    for my $d (5..64) {
-        $checkint .= 1;
-        my $int   = eval qq| $checkint |;
-        if ($int =~ /[eE]/) {
-            $max_intsize = $d - 1;
-            last;
-        }
-    }
-}
-
-{ # PARSE 
-
-    my %escapes = ( #  by Jeremy Muhlich <jmuhlich [at] bitflood.org>
-        b    => "\x8",
-        t    => "\x9",
-        n    => "\xA",
-        f    => "\xC",
-        r    => "\xD",
-        '\\' => '\\',
-        '"'  => '"',
-        '/'  => '/',
-    );
-
-    my $text; # json data
-    my $at;   # offset
-    my $ch;   # 1chracter
-    my $len;  # text length (changed according to UTF8 or NON UTF8)
-    # INTERNAL
-    my $depth;          # nest counter
-    my $encoding;       # json text encoding
-    my $is_valid_utf8;  # temp variable
-    my $utf8_len;       # utf8 byte length
-    # FLAGS
-    my $utf8;           # must be utf8
-    my $max_depth;      # max nest nubmer of objects and arrays
-    my $max_size;
-    my $relaxed;
-    my $cb_object;
-    my $cb_sk_object;
-
-    my $F_HOOK;
-
-    my $allow_bigint;   # using Math::BigInt
-    my $singlequote;    # loosely quoting
-    my $loose;          # 
-    my $allow_barekey;  # bareKey
-
-    # $opt flag
-    # 0x00000001 .... decode_prefix
-    # 0x10000000 .... incr_parse
-
-    sub PP_decode_json {
-        my ($self, $opt); # $opt is an effective flag during this decode_json.
-
-        ($self, $text, $opt) = @_;
-
-        ($at, $ch, $depth) = (0, '', 0);
-
-        if ( !defined $text or ref $text ) {
-            decode_error("malformed JSON string, neither array, object, 
number, string or atom");
-        }
-
-        my $idx = $self->{PROPS};
-
-        ($utf8, $relaxed, $loose, $allow_bigint, $allow_barekey, $singlequote)
-            = @{$idx}[P_UTF8, P_RELAXED, P_LOOSE .. P_ALLOW_SINGLEQUOTE];
-
-        if ( $utf8 ) {
-            utf8::downgrade( $text, 1 ) or Carp::croak("Wide character in 
subroutine entry");
-        }
-        else {
-            utf8::upgrade( $text );
-        }
-
-        $len = length $text;
-
-        ($max_depth, $max_size, $cb_object, $cb_sk_object, $F_HOOK)
-             = @{$self}{qw/max_depth  max_size cb_object cb_sk_object F_HOOK/};
-
-        if ($max_size > 1) {
-            use bytes;
-            my $bytes = length $text;
-            decode_error(
-                sprintf("attempted decode of JSON text of %s bytes size, but 
max_size is set to %s"
-                    , $bytes, $max_size), 1
-            ) if ($bytes > $max_size);
-        }
-
-        # Currently no effect
-        # should use regexp
-        my @octets = unpack('C4', $text);
-        $encoding =   ( $octets[0] and  $octets[1]) ? 'UTF-8'
-                    : (!$octets[0] and  $octets[1]) ? 'UTF-16BE'
-                    : (!$octets[0] and !$octets[1]) ? 'UTF-32BE'
-                    : ( $octets[2]                ) ? 'UTF-16LE'
-                    : (!$octets[2]                ) ? 'UTF-32LE'
-                    : 'unknown';
-
-        white(); # remove head white space
-
-        my $valid_start = defined $ch; # Is there a first character for JSON 
structure?
-
-        my $result = value();
-
-        return undef if ( !$result && ( $opt & 0x10000000 ) ); # for incr_parse
-
-        decode_error("malformed JSON string, neither array, object, number, 
string or atom") unless $valid_start;
-
-        if ( !$idx->[ P_ALLOW_NONREF ] and !ref $result ) {
-                decode_error(
-                'JSON text must be an object or array (but found number, 
string, true, false or null,'
-                       . ' use allow_nonref to allow this)', 1);
-        }
-
-        Carp::croak('something wrong.') if $len < $at; # we won't arrive here.
-
-        my $consumed = defined $ch ? $at - 1 : $at; # consumed JSON text length
-
-        white(); # remove tail white space
-
-        if ( $ch ) {
-            return ( $result, $consumed ) if ($opt & 0x00000001); # all right 
if decode_prefix
-            decode_error("garbage after JSON object");
-        }
-
-        ( $opt & 0x00000001 ) ? ( $result, $consumed ) : $result;
-    }
-
-
-    sub next_chr {
-        return $ch = undef if($at >= $len);
-        $ch = substr($text, $at++, 1);
-    }
-
-
-    sub value {
-        white();
-        return          if(!defined $ch);
-        return object() if($ch eq '{');
-        return array()  if($ch eq '[');
-        return string() if($ch eq '"' or ($singlequote and $ch eq "'"));
-        return number() if($ch =~ /[0-9]/ or $ch eq '-');
-        return word();
-    }
-
-    sub string {
-        my ($i, $s, $t, $u);
-        my $utf16;
-        my $is_utf8;
-
-        ($is_valid_utf8, $utf8_len) = ('', 0);
-
-        $s = ''; # basically UTF8 flag on
-
-        if($ch eq '"' or ($singlequote and $ch eq "'")){
-            my $boundChar = $ch;
-
-            OUTER: while( defined(next_chr()) ){
-
-                if($ch eq $boundChar){
-                    next_chr();
-
-                    if ($utf16) {
-                        decode_error("missing low surrogate character in 
surrogate pair");
-                    }
-
-                    utf8::decode($s) if($is_utf8);
-
-                    return $s;
-                }
-                elsif($ch eq '\\'){
-                    next_chr();
-                    if(exists $escapes{$ch}){
-                        $s .= $escapes{$ch};
-                    }
-                    elsif($ch eq 'u'){ # UNICODE handling
-                        my $u = '';
-
-                        for(1..4){
-                            $ch = next_chr();
-                            last OUTER if($ch !~ /[0-9a-fA-F]/);
-                            $u .= $ch;
-                        }
-
-                        # U+D800 - U+DBFF
-                        if ($u =~ /^[dD][89abAB][0-9a-fA-F]{2}/) { # UTF-16 
high surrogate?
-                            $utf16 = $u;
-                        }
-                        # U+DC00 - U+DFFF
-                        elsif ($u =~ /^[dD][c-fC-F][0-9a-fA-F]{2}/) { # UTF-16 
low surrogate?
-                            unless (defined $utf16) {
-                                decode_error("missing high surrogate character 
in surrogate pair");
-                            }
-                            $is_utf8 = 1;
-                            $s .= JSON_PP_decode_surrogates($utf16, $u) || 
next;
-                            $utf16 = undef;
-                        }
-                        else {
-                            if (defined $utf16) {
-                                decode_error("surrogate pair expected");
-                            }
-
-                            if ( ( my $hex = hex( $u ) ) > 127 ) {
-                                $is_utf8 = 1;
-                                $s .= JSON_PP_decode_unicode($u) || next;
-                            }
-                            else {
-                                $s .= chr $hex;
-                            }
-                        }
-
-                    }
-                    else{
-                        unless ($loose) {
-                            $at -= 2;
-                            decode_error('illegal backslash escape sequence in 
string');
-                        }
-                        $s .= $ch;
-                    }
-                }
-                else{
-
-                    if ( ord $ch  > 127 ) {
-                        if ( $utf8 ) {
-                            unless( $ch = is_valid_utf8($ch) ) {
-                                $at -= 1;
-                                decode_error("malformed UTF-8 character in 
JSON string");
-                            }
-                            else {
-                                $at += $utf8_len - 1;
-                            }
-                        }
-                        else {
-                            utf8::encode( $ch );
-                        }
-
-                        $is_utf8 = 1;
-                    }
-
-                    if (!$loose) {
-                        if ($ch =~ /[\x00-\x1f\x22\x5c]/)  { # '/' ok
-                            $at--;
-                            decode_error('invalid character encountered while 
parsing JSON string');
-                        }
-                    }
-
-                    $s .= $ch;
-                }
-            }
-        }
-
-        decode_error("unexpected end of string while parsing JSON string");
-    }
-
-
-    sub white {
-        while( defined $ch  ){
-            if($ch le ' '){
-                next_chr();
-            }
-            elsif($ch eq '/'){
-                next_chr();
-                if(defined $ch and $ch eq '/'){
-                    1 while(defined(next_chr()) and $ch ne "\n" and $ch ne 
"\r");
-                }
-                elsif(defined $ch and $ch eq '*'){
-                    next_chr();
-                    while(1){
-                        if(defined $ch){
-                            if($ch eq '*'){
-                                if(defined(next_chr()) and $ch eq '/'){
-                                    next_chr();
-                                    last;
-                                }
-                            }
-                            else{
-                                next_chr();
-                            }
-                        }
-                        else{
-                            decode_error("Unterminated comment");
-                        }
-                    }
-                    next;
-                }
-                else{
-                    $at--;
-                    decode_error("malformed JSON string, neither array, 
object, number, string or atom");
-                }
-            }
-            else{
-                if ($relaxed and $ch eq '#') { # correctly?
-                    pos($text) = $at;
-                    $text =~ /\G([^\n]*(?:\r\n|\r|\n|$))/g;
-                    $at = pos($text);
-                    next_chr;
-                    next;
-                }
-
-                last;
-            }
-        }
-    }
-
-
-    sub array {
-        my $a  = [];
-
-        decode_error('json text or perl structure exceeds maximum nesting 
level (max_depth set too low?)')
-                                                    if (++$depth > $max_depth);
-
-        next_chr();
-        white();
-
-        if(defined $ch and $ch eq ']'){
-            --$depth;
-            next_chr();
-            return $a;
-        }
-        else {
-            while(defined($ch)){
-                push @$a, value();
-
-                white();
-
-                if (!defined $ch) {
-                    last;
-                }
-
-                if($ch eq ']'){
-                    --$depth;
-                    next_chr();
-                    return $a;
-                }
-
-                if($ch ne ','){
-                    last;
-                }
-
-                next_chr();
-                white();
-
-                if ($relaxed and $ch eq ']') {
-                    --$depth;
-                    next_chr();
-                    return $a;
-                }
-
-            }
-        }
-
-        decode_error(", or ] expected while parsing array");
-    }
-
-
-    sub object {
-        my $o = {};
-        my $k;
-
-        decode_error('json text or perl structure exceeds maximum nesting 
level (max_depth set too low?)')
-                                                if (++$depth > $max_depth);
-        next_chr();
-        white();
-
-        if(defined $ch and $ch eq '}'){
-            --$depth;
-            next_chr();
-            if ($F_HOOK) {
-                return _json_object_hook($o);
-            }
-            return $o;
-        }
-        else {
-            while (defined $ch) {
-                $k = ($allow_barekey and $ch ne '"' and $ch ne "'") ? 
bareKey() : string();
-                white();
-
-                if(!defined $ch or $ch ne ':'){
-                    $at--;
-                    decode_error("':' expected");
-                }
-
-                next_chr();
-                $o->{$k} = value();
-                white();
-
-                last if (!defined $ch);
-
-                if($ch eq '}'){
-                    --$depth;
-                    next_chr();
-                    if ($F_HOOK) {
-                        return _json_object_hook($o);
-                    }
-                    return $o;
-                }
-
-                if($ch ne ','){
-                    last;
-                }
-
-                next_chr();
-                white();
-
-                if ($relaxed and $ch eq '}') {
-                    --$depth;
-                    next_chr();
-                    if ($F_HOOK) {
-                        return _json_object_hook($o);
-                    }
-                    return $o;
-                }
-
-            }
-
-        }
-
-        $at--;
-        decode_error(", or } expected while parsing object/hash");
-    }
-
-
-    sub bareKey { # doesn't strictly follow Standard ECMA-262 3rd Edition
-        my $key;
-        while($ch =~ /[^\x00-\x23\x25-\x2F\x3A-\x40\x5B-\x5E\x60\x7B-\x7F]/){
-            $key .= $ch;
-            next_chr();
-        }
-        return $key;
-    }
-
-
-    sub word {
-        my $word =  substr($text,$at-1,4);
-
-        if($word eq 'true'){
-            $at += 3;
-            next_chr;
-            return $JSON::PP::true;
-        }
-        elsif($word eq 'null'){
-            $at += 3;
-            next_chr;
-            return undef;
-        }
-        elsif($word eq 'fals'){
-            $at += 3;
-            if(substr($text,$at,1) eq 'e'){
-                $at++;
-                next_chr;
-                return $JSON::PP::false;
-            }
-        }
-
-        $at--; # for decode_error report
-
-        decode_error("'null' expected")  if ($word =~ /^n/);
-        decode_error("'true' expected")  if ($word =~ /^t/);
-        decode_error("'false' expected") if ($word =~ /^f/);
-        decode_error("malformed JSON string, neither array, object, number, 
string or atom");
-    }
-
-
-    sub number {
-        my $n    = '';
-        my $v;
-
-        # According to RFC4627, hex or oct digts are invalid.
-        if($ch eq '0'){
-            my $peek = substr($text,$at,1);
-            my $hex  = $peek =~ /[xX]/; # 0 or 1
-
-            if($hex){
-                decode_error("malformed number (leading zero must not be 
followed by another digit)");
-                ($n) = ( substr($text, $at+1) =~ /^([0-9a-fA-F]+)/);
-            }
-            else{ # oct
-                ($n) = ( substr($text, $at) =~ /^([0-7]+)/);
-                if (defined $n and length $n > 1) {
-                    decode_error("malformed number (leading zero must not be 
followed by another digit)");
-                }
-            }
-
-            if(defined $n and length($n)){
-                if (!$hex and length($n) == 1) {
-                   decode_error("malformed number (leading zero must not be 
followed by another digit)");
-                }
-                $at += length($n) + $hex;
-                next_chr;
-                return $hex ? hex($n) : oct($n);
-            }
-        }
-
-        if($ch eq '-'){
-            $n = '-';
-            next_chr;
-            if (!defined $ch or $ch !~ /\d/) {
-                decode_error("malformed number (no digits after initial 
minus)");
-            }
-        }
-
-        while(defined $ch and $ch =~ /\d/){
-            $n .= $ch;
-            next_chr;
-        }
-
-        if(defined $ch and $ch eq '.'){
-            $n .= '.';
-
-            next_chr;
-            if (!defined $ch or $ch !~ /\d/) {
-                decode_error("malformed number (no digits after decimal 
point)");
-            }
-            else {
-                $n .= $ch;
-            }
-
-            while(defined(next_chr) and $ch =~ /\d/){
-                $n .= $ch;
-            }
-        }
-
-        if(defined $ch and ($ch eq 'e' or $ch eq 'E')){
-            $n .= $ch;
-            next_chr;
-
-            if(defined($ch) and ($ch eq '+' or $ch eq '-')){
-                $n .= $ch;
-                next_chr;
-                if (!defined $ch or $ch =~ /\D/) {
-                    decode_error("malformed number (no digits after exp 
sign)");
-                }
-                $n .= $ch;
-            }
-            elsif(defined($ch) and $ch =~ /\d/){
-                $n .= $ch;
-            }
-            else {
-                decode_error("malformed number (no digits after exp sign)");
-            }
-
-            while(defined(next_chr) and $ch =~ /\d/){
-                $n .= $ch;
-            }
-
-        }
-
-        $v .= $n;
-
-        if ($v !~ /[.eE]/ and length $v > $max_intsize) {
-            if ($allow_bigint) { # from Adam Sussman
-                require Math::BigInt;
-                return Math::BigInt->new($v);
-            }
-            else {
-                return "$v";
-            }
-        }
-        elsif ($allow_bigint) {
-            require Math::BigFloat;
-            return Math::BigFloat->new($v);
-        }
-
-        return 0+$v;
-    }
-
-
-    sub is_valid_utf8 {
-
-        $utf8_len = $_[0] =~ /[\x00-\x7F]/  ? 1
-                  : $_[0] =~ /[\xC2-\xDF]/  ? 2
-                  : $_[0] =~ /[\xE0-\xEF]/  ? 3
-                  : $_[0] =~ /[\xF0-\xF4]/  ? 4
-                  : 0
-                  ;
-
-        return unless $utf8_len;
-
-        my $is_valid_utf8 = substr($text, $at - 1, $utf8_len);
-
-        return ( $is_valid_utf8 =~ /^(?:
-             [\x00-\x7F]
-            |[\xC2-\xDF][\x80-\xBF]
-            |[\xE0][\xA0-\xBF][\x80-\xBF]
-            |[\xE1-\xEC][\x80-\xBF][\x80-\xBF]
-            |[\xED][\x80-\x9F][\x80-\xBF]
-            |[\xEE-\xEF][\x80-\xBF][\x80-\xBF]
-            |[\xF0][\x90-\xBF][\x80-\xBF][\x80-\xBF]
-            |[\xF1-\xF3][\x80-\xBF][\x80-\xBF][\x80-\xBF]
-            |[\xF4][\x80-\x8F][\x80-\xBF][\x80-\xBF]
-        )$/x )  ? $is_valid_utf8 : '';
-    }
-
-
-    sub decode_error {
-        my $error  = shift;
-        my $no_rep = shift;
-        my $str    = defined $text ? substr($text, $at) : '';
-        my $mess   = '';
-        my $type   = $] >= 5.008           ? 'U*'
-                   : $] <  5.006           ? 'C*'
-                   : utf8::is_utf8( $str ) ? 'U*' # 5.6
-                   : 'C*'
-                   ;
-
-        for my $c ( unpack( $type, $str ) ) { # emulate pv_uni_display() ?
-            $mess .=  $c == 0x07 ? '\a'
-                    : $c == 0x09 ? '\t'
-                    : $c == 0x0a ? '\n'
-                    : $c == 0x0d ? '\r'
-                    : $c == 0x0c ? '\f'
-                    : $c <  0x20 ? sprintf('\x{%x}', $c)
-                    : $c == 0x5c ? '\\\\'
-                    : $c <  0x80 ? chr($c)
-                    : sprintf('\x{%x}', $c)
-                    ;
-            if ( length $mess >= 20 ) {
-                $mess .= '...';
-                last;
-            }
-        }
-
-        unless ( length $mess ) {
-            $mess = '(end of string)';
-        }
-
-        Carp::croak (
-            $no_rep ? "$error" : "$error, at character offset $at (before 
\"$mess\")"
-        );
-
-    }
-
-
-    sub _json_object_hook {
-        my $o    = $_[0];
-        my @ks = keys %{$o};
-
-        if ( $cb_sk_object and @ks == 1 and exists $cb_sk_object->{ $ks[0] } 
and ref $cb_sk_object->{ $ks[0] } ) {
-            my @val = $cb_sk_object->{ $ks[0] }->( $o->{$ks[0]} );
-            if (@val == 1) {
-                return $val[0];
-            }
-        }
-
-        my @val = $cb_object->($o) if ($cb_object);
-        if (@val == 0 or @val > 1) {
-            return $o;
-        }
-        else {
-            return $val[0];
-        }
-    }
-
-
-    sub PP_decode_box {
-        {
-            text    => $text,
-            at      => $at,
-            ch      => $ch,
-            len     => $len,
-            depth   => $depth,
-            encoding      => $encoding,
-            is_valid_utf8 => $is_valid_utf8,
-        };
-    }
-
-} # PARSE
-
-
-sub _decode_surrogates { # from perlunicode
-    my $uni = 0x10000 + (hex($_[0]) - 0xD800) * 0x400 + (hex($_[1]) - 0xDC00);
-    my $un  = pack('U*', $uni);
-    utf8::encode( $un );
-    return $un;
-}
-
-
-sub _decode_unicode {
-    my $un = pack('U', hex shift);
-    utf8::encode( $un );
-    return $un;
-}
-
-
-
-
-
-###############################
-# Utilities
-#
-
-BEGIN {
-    eval 'require Scalar::Util';
-    unless($@){
-        *JSON::PP::blessed = \&Scalar::Util::blessed;
-        *JSON::PP::reftype = \&Scalar::Util::reftype;
-    }
-    else{ # This code is from Sclar::Util.
-        # warn $@;
-        eval 'sub UNIVERSAL::a_sub_not_likely_to_be_here { ref($_[0]) }';
-        *JSON::PP::blessed = sub {
-            local($@, $SIG{__DIE__}, $SIG{__WARN__});
-            ref($_[0]) ? eval { $_[0]->a_sub_not_likely_to_be_here } : undef;
-        };
-        my %tmap = qw(
-            B::NULL   SCALAR
-            B::HV     HASH
-            B::AV     ARRAY
-            B::CV     CODE
-            B::IO     IO
-            B::GV     GLOB
-            B::REGEXP REGEXP
-        );
-        *JSON::PP::reftype = sub {
-            my $r = shift;
-
-            return undef unless length(ref($r));
-
-            my $t = ref(B::svref_2object($r));
-
-            return
-                exists $tmap{$t} ? $tmap{$t}
-              : length(ref($$r)) ? 'REF'
-              :                    'SCALAR';
-        };
-    }
-}
-
-
-# shamely copied and modified from JSON::XS code.
-
-$JSON::PP::true  = do { bless \(my $dummy = 1), "JSON::PP::Boolean" };
-$JSON::PP::false = do { bless \(my $dummy = 0), "JSON::PP::Boolean" };
-
-sub is_bool { defined $_[0] and UNIVERSAL::isa($_[0], "JSON::PP::Boolean"); }
-
-sub true  { $JSON::PP::true  }
-sub false { $JSON::PP::false }
-sub null  { undef; }
-
-###############################
-
-package JSON::PP::Boolean;
-
-
-use overload (
-   "0+"     => sub { ${$_[0]} },
-   "++"     => sub { $_[0] = ${$_[0]} + 1 },
-   "--"     => sub { $_[0] = ${$_[0]} - 1 },
-   fallback => 1,
-);
-
-
-###############################
-
-package JSON::PP::IncrParser;
-
-use strict;
-
-use constant INCR_M_WS   => 0; # initial whitespace skipping
-use constant INCR_M_STR  => 1; # inside string
-use constant INCR_M_BS   => 2; # inside backslash
-use constant INCR_M_JSON => 3; # outside anything, count nesting
-use constant INCR_M_C0   => 4;
-use constant INCR_M_C1   => 5;
-
-$JSON::PP::IncrParser::VERSION = '1.01';
-
-my $unpack_format = $] < 5.006 ? 'C*' : 'U*';
-
-sub new {
-    my ( $class ) = @_;
-
-    bless {
-        incr_nest    => 0,
-        incr_text    => undef,
-        incr_parsing => 0,
-        incr_p       => 0,
-    }, $class;
-}
-
-
-sub incr_parse {
-    my ( $self, $coder, $text ) = @_;
-
-    $self->{incr_text} = '' unless ( defined $self->{incr_text} );
-
-    if ( defined $text ) {
-        if ( utf8::is_utf8( $text ) and !utf8::is_utf8( $self->{incr_text} ) ) 
{
-            utf8::upgrade( $self->{incr_text} ) ;
-            utf8::decode( $self->{incr_text} ) ;
-        }
-        $self->{incr_text} .= $text;
-    }
-
-
-    my $max_size = $coder->get_max_size;
-
-    if ( defined wantarray ) {
-
-        $self->{incr_mode} = INCR_M_WS;
-
-        if ( wantarray ) {
-            my @ret;
-
-            $self->{incr_parsing} = 1;
-
-            do {
-                push @ret, $self->_incr_parse( $coder, $self->{incr_text} );
-
-                unless ( !$self->{incr_nest} and $self->{incr_mode} == 
INCR_M_JSON ) {
-                    $self->{incr_mode} = INCR_M_WS;
-                }
-
-            } until ( !$self->{incr_text} );
-
-            $self->{incr_parsing} = 0;
-
-            return @ret;
-        }
-        else { # in scalar context
-            $self->{incr_parsing} = 1;
-            my $obj = $self->_incr_parse( $coder, $self->{incr_text} );
-            $self->{incr_parsing} = 0 if defined $obj; # pointed by Martin J. 
Evans
-            return $obj ? $obj : undef; # $obj is an empty string, parsing was 
completed.
-        }
-
-    }
-
-}
-
-
-sub _incr_parse {
-    my ( $self, $coder, $text, $skip ) = @_;
-    my $p = $self->{incr_p};
-    my $restore = $p;
-
-    my @obj;
-    my $len = length $text;
-
-    if ( $self->{incr_mode} == INCR_M_WS ) {
-        while ( $len > $p ) {
-            my $s = substr( $text, $p, 1 );
-            $p++ and next if ( 0x20 >= unpack($unpack_format, $s) );
-            $self->{incr_mode} = INCR_M_JSON;
-            last;
-       }
-    }
-
-    while ( $len > $p ) {
-        my $s = substr( $text, $p++, 1 );
-
-        if ( $s eq '"' ) {
-            if ( $self->{incr_mode} != INCR_M_STR  ) {
-                $self->{incr_mode} = INCR_M_STR;
-            }
-            else {
-                $self->{incr_mode} = INCR_M_JSON;
-                unless ( $self->{incr_nest} ) {
-                    last;
-                }
-            }
-        }
-
-        if ( $self->{incr_mode} == INCR_M_JSON ) {
-
-            if ( $s eq '[' or $s eq '{' ) {
-                if ( ++$self->{incr_nest} > $coder->get_max_depth ) {
-                    Carp::croak('json text or perl structure exceeds maximum 
nesting level (max_depth set too low?)');
-                }
-            }
-            elsif ( $s eq ']' or $s eq '}' ) {
-                last if ( --$self->{incr_nest} <= 0 );
-            }
-            elsif ( $s eq '#' ) {
-                while ( $len > $p ) {
-                    last if substr( $text, $p++, 1 ) eq "\n";
-                }
-            }
-
-        }
-
-    }
-
-    $self->{incr_p} = $p;
-
-    return if ( $self->{incr_mode} == INCR_M_JSON and $self->{incr_nest} > 0 );
-
-    return '' unless ( length substr( $self->{incr_text}, 0, $p ) );
-
-    local $Carp::CarpLevel = 2;
-
-    $self->{incr_p} = $restore;
-    $self->{incr_c} = $p;
-
-    my ( $obj, $tail ) = $coder->PP_decode_json( substr( $self->{incr_text}, 
0, $p ), 0x10000001 );
-
-    $self->{incr_text} = substr( $self->{incr_text}, $p );
-    $self->{incr_p} = 0;
-
-    return $obj or '';
-}
-
-
-sub incr_text {
-    if ( $_[0]->{incr_parsing} ) {
-        Carp::croak("incr_text can not be called when the incremental parser 
already started parsing");
-    }
-    $_[0]->{incr_text};
-}
-
-
-sub incr_skip {
-    my $self  = shift;
-    $self->{incr_text} = substr( $self->{incr_text}, $self->{incr_c} );
-    $self->{incr_p} = 0;
-}
-
-
-sub incr_reset {
-    my $self = shift;
-    $self->{incr_text}    = undef;
-    $self->{incr_p}       = 0;
-    $self->{incr_mode}    = 0;
-    $self->{incr_nest}    = 0;
-    $self->{incr_parsing} = 0;
-}
-
-###############################
-
-
-1;
-__END__
-=pod
-
-=head1 NAME
-
-JSON::PP - JSON::XS compatible pure-Perl module.
-
-=head1 SYNOPSIS
-
- use JSON::PP;
-
- # exported functions, they croak on error
- # and expect/generate UTF-8
-
- $utf8_encoded_json_text = encode_json $perl_hash_or_arrayref;
- $perl_hash_or_arrayref  = decode_json $utf8_encoded_json_text;
-
- # OO-interface
-
- $coder = JSON::PP->new->ascii->pretty->allow_nonref;
- $pretty_printed_unencoded = $coder->encode ($perl_scalar);
- $perl_scalar = $coder->decode ($unicode_json_text);
-
- # Note that JSON version 2.0 and above will automatically use
- # JSON::XS or JSON::PP, so you should be able to just:
- 
- use JSON;
-
-=head1 DESCRIPTION
-
-This module is L<JSON::XS> compatible pure Perl module.
-(Perl 5.8 or later is recommended)
-
-JSON::XS is the fastest and most proper JSON module on CPAN.
-It is written by Marc Lehmann in C, so must be compiled and
-installed in the used environment.
-
-JSON::PP is a pure-Perl module and has compatibility to JSON::XS.
-
-
-=head2 FEATURES
-
-=over
-
-=item * correct unicode handling
-
-This module knows how to handle Unicode (depending on Perl version).
-
-See to L<JSON::XS/A FEW NOTES ON UNICODE AND PERL> and L<UNICODE HANDLING ON 
PERLS>.
-
-
-=item * round-trip integrity
-
-When you serialise a perl data structure using only data types supported
-by JSON and Perl, the deserialised data structure is identical on the Perl
-level. (e.g. the string "2.0" doesn't suddenly become "2" just because
-it looks like a number). There I<are> minor exceptions to this, read the
-MAPPING section below to learn about those.
-
-
-=item * strict checking of JSON correctness
-
-There is no guessing, no generating of illegal JSON texts by default,
-and only JSON is accepted as input by default (the latter is a security 
feature).
-But when some options are set, loose chcking features are available.
-
-=back
-
-=head1 FUNCTIONS
-
-Basically, check to L<JSON> or L<JSON::XS>.
-
-=head2 encode_json
-
-    $json_text = encode_json $perl_scalar
-
-=head2 decode_json
-
-    $perl_scalar = decode_json $json_text
-
-=head2 JSON::PP::true
-
-Returns JSON true value which is blessed object.
-It C<isa> JSON::PP::Boolean object.
-
-=head2 JSON::PP::false
-
-Returns JSON false value which is blessed object.
-It C<isa> JSON::PP::Boolean object.
-
-=head2 JSON::PP::null
-
-Returns C<undef>.
-
-=head1 METHODS
-
-Basically, check to L<JSON> or L<JSON::XS>.
-
-=head2 new
-
-    $json = new JSON::PP
-
-Rturns a new JSON::PP object that can be used to de/encode JSON
-strings.
-
-=head2 ascii
-
-    $json = $json->ascii([$enable])
-    
-    $enabled = $json->get_ascii
-
-If $enable is true (or missing), then the encode method will not generate 
characters outside
-the code range 0..127. Any Unicode characters outside that range will be 
escaped using either
-a single \uXXXX or a double \uHHHH\uLLLLL escape sequence, as per RFC4627.
-(See to L<JSON::XS/OBJECT-ORIENTED INTERFACE>).
-
-In Perl 5.005, there is no character having high value (more than 255).
-See to L<UNICODE HANDLING ON PERLS>.
-
-If $enable is false, then the encode method will not escape Unicode characters 
unless
-required by the JSON syntax or other flags. This results in a faster and more 
compact format.
-
-  JSON::PP->new->ascii(1)->encode([chr 0x10401])
-  => ["\ud801\udc01"]
-
-=head2 latin1
-
-    $json = $json->latin1([$enable])
-    
-    $enabled = $json->get_latin1
-
-If $enable is true (or missing), then the encode method will encode the 
resulting JSON
-text as latin1 (or iso-8859-1), escaping any characters outside the code range 
0..255.
-
-If $enable is false, then the encode method will not escape Unicode characters
-unless required by the JSON syntax or other flags.
-
-  JSON::XS->new->latin1->encode (["\x{89}\x{abc}"]
-  => ["\x{89}\\u0abc"]    # (perl syntax, U+abc escaped, U+89 not)
-
-See to L<UNICODE HANDLING ON PERLS>.
-
-=head2 utf8
-
-    $json = $json->utf8([$enable])
-    
-    $enabled = $json->get_utf8
-
-If $enable is true (or missing), then the encode method will encode the JSON 
result
-into UTF-8, as required by many protocols, while the decode method expects to 
be handled
-an UTF-8-encoded string. Please note that UTF-8-encoded strings do not contain 
any
-characters outside the range 0..255, they are thus useful for bytewise/binary 
I/O.
-
-(In Perl 5.005, any character outside the range 0..255 does not exist.
-See to L<UNICODE HANDLING ON PERLS>.)
-
-In future versions, enabling this option might enable autodetection of the 
UTF-16 and UTF-32
-encoding families, as described in RFC4627.
-
-If $enable is false, then the encode method will return the JSON string as a 
(non-encoded)
-Unicode string, while decode expects thus a Unicode string. Any decoding or 
encoding
-(e.g. to UTF-8 or UTF-16) needs to be done yourself, e.g. using the Encode 
module.
-
-Example, output UTF-16BE-encoded JSON:
-
-  use Encode;
-  $jsontext = encode "UTF-16BE", JSON::XS->new->encode ($object);
-
-Example, decode UTF-32LE-encoded JSON:
-
-  use Encode;
-  $object = JSON::XS->new->decode (decode "UTF-32LE", $jsontext);
-
-
-=head2 pretty
-
-    $json = $json->pretty([$enable])
-
-This enables (or disables) all of the C<indent>, C<space_before> and
-C<space_after> flags in one call to generate the most readable
-(or most compact) form possible.
-
-=head2 indent
-
-    $json = $json->indent([$enable])
-    
-    $enabled = $json->get_indent
-
-The default indent space length is three.
-You can use C<indent_length> to change the length.
-
-=head2 space_before
-
-    $json = $json->space_before([$enable])
-    
-    $enabled = $json->get_space_before
-
-=head2 space_after
-
-    $json = $json->space_after([$enable])
-    
-    $enabled = $json->get_space_after
-
-=head2 relaxed
-
-    $json = $json->relaxed([$enable])
-    
-    $enabled = $json->get_relaxed
-
-=head2 canonical
-
-    $json = $json->canonical([$enable])
-    
-    $enabled = $json->get_canonical
-
-If you want your own sorting routine, you can give a code referece
-or a subroutine name to C<sort_by>. See to C<JSON::PP OWN METHODS>.
-
-=head2 allow_nonref
-
-    $json = $json->allow_nonref([$enable])
-    
-    $enabled = $json->get_allow_nonref
-
-=head2 allow_unknown
-
-    $json = $json->allow_unknown ([$enable])
-    
-    $enabled = $json->get_allow_unknown
-
-=head2 allow_blessed
-
-    $json = $json->allow_blessed([$enable])
-    
-    $enabled = $json->get_allow_blessed
-
-=head2 convert_blessed
-
-    $json = $json->convert_blessed([$enable])
-    
-    $enabled = $json->get_convert_blessed
-
-=head2 filter_json_object
-
-    $json = $json->filter_json_object([$coderef])
-
-=head2 filter_json_single_key_object
-
-    $json = $json->filter_json_single_key_object($key [=> $coderef])
-
-=head2 shrink
-
-    $json = $json->shrink([$enable])
-    
-    $enabled = $json->get_shrink
-
-In JSON::XS, this flag resizes strings generated by either
-C<encode> or C<decode> to their minimum size possible.
-It will also try to downgrade any strings to octet-form if possible.
-
-In JSON::PP, it is noop about resizing strings but tries
-C<utf8::downgrade> to the returned string by C<encode>.
-See to L<utf8>.
-
-See to L<JSON::XS/OBJECT-ORIENTED INTERFACE>
-
-=head2 max_depth
-
-    $json = $json->max_depth([$maximum_nesting_depth])
-    
-    $max_depth = $json->get_max_depth
-
-Sets the maximum nesting level (default C<512>) accepted while encoding
-or decoding. If a higher nesting level is detected in JSON text or a Perl
-data structure, then the encoder and decoder will stop and croak at that
-point.
-
-Nesting level is defined by number of hash- or arrayrefs that the encoder
-needs to traverse to reach a given point or the number of C<{> or C<[>
-characters without their matching closing parenthesis crossed to reach a
-given character in a string.
-
-If no argument is given, the highest possible setting will be used, which
-is rarely useful.
-
-See L<JSON::XS/SSECURITY CONSIDERATIONS> for more info on why this is useful.
-
-When a large value (100 or more) was set and it de/encodes a deep nested 
object/text,
-it may raise a warning 'Deep recursion on subroutin' at the perl runtime phase.
-
-=head2 max_size
-
-    $json = $json->max_size([$maximum_string_size])
-    
-    $max_size = $json->get_max_size
-
-Set the maximum length a JSON text may have (in bytes) where decoding is
-being attempted. The default is C<0>, meaning no limit. When C<decode>
-is called on a string that is longer then this many bytes, it will not
-attempt to decode the string but throw an exception. This setting has no
-effect on C<encode> (yet).
-
-If no argument is given, the limit check will be deactivated (same as when
-C<0> is specified).
-
-See L<JSON::XS/SSECURITY CONSIDERATIONS> for more info on why this is useful.
-
-=head2 encode
-
-    $json_text = $json->encode($perl_scalar)
-
-=head2 decode
-
-    $perl_scalar = $json->decode($json_text)
-
-=head2 decode_prefix
-
-    ($perl_scalar, $characters) = $json->decode_prefix($json_text)
-
-
-=head1 INCREMENTAL PARSING
-
-Most of this section are copied and modified from L<JSON::XS/INCREMENTAL 
PARSING>.
-
-In some cases, there is the need for incremental parsing of JSON texts.
-This module does allow you to parse a JSON stream incrementally.
-It does so by accumulating text until it has a full JSON object, which
-it then can decode. This process is similar to using C<decode_prefix>
-to see if a full JSON object is available, but is much more efficient
-(and can be implemented with a minimum of method calls).
-
-This module will only attempt to parse the JSON text once it is sure it
-has enough text to get a decisive result, using a very simple but
-truly incremental parser. This means that it sometimes won't stop as
-early as the full parser, for example, it doesn't detect parenthese
-mismatches. The only thing it guarantees is that it starts decoding as
-soon as a syntactically valid JSON text has been seen. This means you need
-to set resource limits (e.g. C<max_size>) to ensure the parser will stop
-parsing in the presence if syntax errors.
-
-The following methods implement this incremental parser.
-
-=head2 incr_parse
-
-    $json->incr_parse( [$string] ) # void context
-    
-    $obj_or_undef = $json->incr_parse( [$string] ) # scalar context
-    
-    @obj_or_empty = $json->incr_parse( [$string] ) # list context
-
-This is the central parsing function. It can both append new text and
-extract objects from the stream accumulated so far (both of these
-functions are optional).
-
-If C<$string> is given, then this string is appended to the already
-existing JSON fragment stored in the C<$json> object.
-
-After that, if the function is called in void context, it will simply
-return without doing anything further. This can be used to add more text
-in as many chunks as you want.
-
-If the method is called in scalar context, then it will try to extract
-exactly I<one> JSON object. If that is successful, it will return this
-object, otherwise it will return C<undef>. If there is a parse error,
-this method will croak just as C<decode> would do (one can then use
-C<incr_skip> to skip the errornous part). This is the most common way of
-using the method.
-
-And finally, in list context, it will try to extract as many objects
-from the stream as it can find and return them, or the empty list
-otherwise. For this to work, there must be no separators between the JSON
-objects or arrays, instead they must be concatenated back-to-back. If
-an error occurs, an exception will be raised as in the scalar context
-case. Note that in this case, any previously-parsed JSON texts will be
-lost.
-
-Example: Parse some JSON arrays/objects in a given string and return them.
-
-    my @objs = JSON->new->incr_parse ("[5][7][1,2]");
-
-=head2 incr_text
-
-    $lvalue_string = $json->incr_text
-
-This method returns the currently stored JSON fragment as an lvalue, that
-is, you can manipulate it. This I<only> works when a preceding call to
-C<incr_parse> in I<scalar context> successfully returned an object. Under
-all other circumstances you must not call this function (I mean it.
-although in simple tests it might actually work, it I<will> fail under
-real world conditions). As a special exception, you can also call this
-method before having parsed anything.
-
-This function is useful in two cases: a) finding the trailing text after a
-JSON object or b) parsing multiple JSON objects separated by non-JSON text
-(such as commas).
-
-    $json->incr_text =~ s/\s*,\s*//;
-
-In Perl 5.005, C<lvalue> attribute is not available.
-You must write codes like the below:
-
-    $string = $json->incr_text;
-    $string =~ s/\s*,\s*//;
-    $json->incr_text( $string );
-
-=head2 incr_skip
-
-    $json->incr_skip
-
-This will reset the state of the incremental parser and will remove the
-parsed text from the input buffer. This is useful after C<incr_parse>
-died, in which case the input buffer and incremental parser state is left
-unchanged, to skip the text parsed so far and to reset the parse state.
-
-=head2 incr_reset
-
-    $json->incr_reset
-
-This completely resets the incremental parser, that is, after this call,
-it will be as if the parser had never parsed anything.
-
-This is useful if you want ot repeatedly parse JSON objects and want to
-ignore any trailing data, which means you have to reset the parser after
-each successful decode.
-
-See to L<JSON::XS/INCREMENTAL PARSING> for examples.
-
-
-=head1 JSON::PP OWN METHODS
-
-=head2 allow_singlequote
-
-    $json = $json->allow_singlequote([$enable])
-
-If C<$enable> is true (or missing), then C<decode> will accept
-JSON strings quoted by single quotations that are invalid JSON
-format.
-
-    $json->allow_singlequote->decode({"foo":'bar'});
-    $json->allow_singlequote->decode({'foo':"bar"});
-    $json->allow_singlequote->decode({'foo':'bar'});
-
-As same as the C<relaxed> option, this option may be used to parse
-application-specific files written by humans.
-
-
-=head2 allow_barekey
-
-    $json = $json->allow_barekey([$enable])
-
-If C<$enable> is true (or missing), then C<decode> will accept
-bare keys of JSON object that are invalid JSON format.
-
-As same as the C<relaxed> option, this option may be used to parse
-application-specific files written by humans.
-
-    $json->allow_barekey->decode('{foo:"bar"}');
-
-=head2 allow_bignum
-
-    $json = $json->allow_bignum([$enable])
-
-If C<$enable> is true (or missing), then C<decode> will convert
-the big integer Perl cannot handle as integer into a L<Math::BigInt>
-object and convert a floating number (any) into a L<Math::BigFloat>.
-
-On the contary, C<encode> converts C<Math::BigInt> objects and 
C<Math::BigFloat>
-objects into JSON numbers with C<allow_blessed> enable.
-
-   $json->allow_nonref->allow_blessed->allow_bignum;
-   $bigfloat = $json->decode('2.000000000000000000000000001');
-   print $json->encode($bigfloat);
-   # => 2.000000000000000000000000001
-
-See to L<JSON::XS/MAPPING> aboout the normal conversion of JSON number.
-
-=head2 loose
-
-    $json = $json->loose([$enable])
-
-The unescaped [\x00-\x1f\x22\x2f\x5c] strings are invalid in JSON strings
-and the module doesn't allow to C<decode> to these (except for \x2f).
-If C<$enable> is true (or missing), then C<decode>  will accept these
-unescaped strings.
-
-    $json->loose->decode(qq|["abc
-                                   def"]|);
-
-See L<JSON::XS/SSECURITY CONSIDERATIONS>.
-
-=head2 escape_slash
-
-    $json = $json->escape_slash([$enable])
-
-According to JSON Grammar, I<slash> (U+002F) is escaped. But default
-JSON::PP (as same as JSON::XS) encodes strings without escaping slash.
-
-If C<$enable> is true (or missing), then C<encode> will escape slashes.
-
-=head2 (OBSOLETED)as_nonblessed
-
-    $json = $json->as_nonblessed
-
-(OBSOLETED) If C<$enable> is true (or missing), then C<encode> will convert
-a blessed hash reference or a blessed array reference (contains
-other blessed references) into JSON members and arrays.
-
-This feature is effective only when C<allow_blessed> is enable.
-
-=head2 indent_length
-
-    $json = $json->indent_length($length)
-
-JSON::XS indent space length is 3 and cannot be changed.
-JSON::PP set the indent space length with the given $length.
-The default is 3. The acceptable range is 0 to 15.
-
-=head2 sort_by
-
-    $json = $json->sort_by($function_name)
-    $json = $json->sort_by($subroutine_ref)
-
-If $function_name or $subroutine_ref are set, its sort routine are used
-in encoding JSON objects.
-
-   $js = $pc->sort_by(sub { $JSON::PP::a cmp $JSON::PP::b })->encode($obj);
-   # is($js, q|{"a":1,"b":2,"c":3,"d":4,"e":5,"f":6,"g":7,"h":8,"i":9}|);
-
-   $js = $pc->sort_by('own_sort')->encode($obj);
-   # is($js, q|{"a":1,"b":2,"c":3,"d":4,"e":5,"f":6,"g":7,"h":8,"i":9}|);
-
-   sub JSON::PP::own_sort { $JSON::PP::a cmp $JSON::PP::b }
-
-As the sorting routine runs in the JSON::PP scope, the given
-subroutine name and the special variables C<$a>, C<$b> will begin
-'JSON::PP::'.
-
-If $integer is set, then the effect is same as C<canonical> on.
-
-=head1 INTERNAL
-
-For developers.
-
-=over
-
-=item PP_encode_box
-
-Returns
-
-        {
-            depth        => $depth,
-            indent_count => $indent_count,
-        }
-
-
-=item PP_decode_box
-
-Returns
-
-        {
-            text    => $text,
-            at      => $at,
-            ch      => $ch,
-            len     => $len,
-            depth   => $depth,
-            encoding      => $encoding,
-            is_valid_utf8 => $is_valid_utf8,
-        };
-
-=back
-
-=head1 MAPPING
-
-See to L<JSON::XS/MAPPING>.
-
-
-=head1 UNICODE HANDLING ON PERLS
-
-If you do not know about Unicode on Perl well,
-please check L<JSON::XS/A FEW NOTES ON UNICODE AND PERL>.
-
-=head2 Perl 5.8 and later
-
-Perl can handle Unicode and the JSON::PP de/encode methods also work properly.
-
-    $json->allow_nonref->encode(chr hex 3042);
-    $json->allow_nonref->encode(chr hex 12345);
-
-Reuturns C<"\u3042"> and C<"\ud808\udf45"> respectively.
-
-    $json->allow_nonref->decode('"\u3042"');
-    $json->allow_nonref->decode('"\ud808\udf45"');
-
-Returns UTF-8 encoded strings with UTF8 flag, regarded as C<U+3042> and 
C<U+12345>.
-
-Note that the versions from Perl 5.8.0 to 5.8.2, Perl built-in C<join> was 
broken,
-so JSON::PP wraps the C<join> with a subroutine. Thus JSON::PP works slow in 
the versions.
-
-
-=head2 Perl 5.6
-
-Perl can handle Unicode and the JSON::PP de/encode methods also work.
-
-=head2 Perl 5.005
-
-Perl 5.005 is a byte sementics world -- all strings are sequences of bytes.
-That means the unicode handling is not available.
-
-In encoding,
-
-    $json->allow_nonref->encode(chr hex 3042);  # hex 3042 is 12354.
-    $json->allow_nonref->encode(chr hex 12345); # hex 12345 is 74565.
-
-Returns C<B> and C<E>, as C<chr> takes a value more than 255, it treats
-as C<$value % 256>, so the above codes are equivalent to :
-
-    $json->allow_nonref->encode(chr 66);
-    $json->allow_nonref->encode(chr 69);
-
-In decoding,
-
-    $json->decode('"\u00e3\u0081\u0082"');
-
-The returned is a byte sequence C<0xE3 0x81 0x82> for UTF-8 encoded
-japanese character (C<HIRAGANA LETTER A>).
-And if it is represented in Unicode code point, C<U+3042>.
-
-Next, 
-
-    $json->decode('"\u3042"');
-
-We ordinary expect the returned value is a Unicode character C<U+3042>.
-But here is 5.005 world. This is C<0xE3 0x81 0x82>.
-
-    $json->decode('"\ud808\udf45"');
-
-This is not a character C<U+12345> but bytes - C<0xf0 0x92 0x8d 0x85>.
-
-
-=head1 TODO
-
-=over
-
-=item speed
-
-=item memory saving
-
-=back
-
-
-=head1 SEE ALSO
-
-Most of the document are copied and modified from JSON::XS doc.
-
-L<JSON::XS>
-
-RFC4627 (L<http://www.ietf.org/rfc/rfc4627.txt>)
-
-=head1 AUTHOR
-
-Makamaka Hannyaharamitu, E<lt>makamaka[at]cpan.orgE<gt>
-
-
-=head1 COPYRIGHT AND LICENSE
-
-Copyright 2007-2010 by Makamaka Hannyaharamitu
-
-This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself. 
-
-=cut

http://git-wip-us.apache.org/repos/asf/incubator-hawq/blob/b7c8717b/src/include/catalog/JSON/PP/Boolean.pm
----------------------------------------------------------------------
diff --git a/src/include/catalog/JSON/PP/Boolean.pm 
b/src/include/catalog/JSON/PP/Boolean.pm
deleted file mode 100644
index 0b1fb19..0000000
--- a/src/include/catalog/JSON/PP/Boolean.pm
+++ /dev/null
@@ -1,26 +0,0 @@
-=head1 NAME
-
-JSON::PP::Boolean - dummy module providing JSON::PP::Boolean
-
-=head1 SYNOPSIS
-
- # do not "use" yourself
-
-=head1 DESCRIPTION
-
-This module exists only to provide overload resolution for Storable and 
similar modules. See
-L<JSON::PP> for more info about this class.
-
-=cut
-
-use JSON::PP ();
-use strict;
-
-1;
-
-=head1 AUTHOR
-
-This idea is from L<JSON::XS::Boolean> written by Marc Lehmann 
<schmorp[at]schmorp.de>
-
-=cut
-

http://git-wip-us.apache.org/repos/asf/incubator-hawq/blob/b7c8717b/src/include/catalog/JSON/PP5005.pm
----------------------------------------------------------------------
diff --git a/src/include/catalog/JSON/PP5005.pm 
b/src/include/catalog/JSON/PP5005.pm
deleted file mode 100644
index 85dd2cc..0000000
--- a/src/include/catalog/JSON/PP5005.pm
+++ /dev/null
@@ -1,146 +0,0 @@
-package JSON::PP5005;
-
-use 5.005;
-use strict;
-
-my @properties;
-
-$JSON::PP5005::VERSION = '1.10';
-
-BEGIN {
-
-    sub utf8::is_utf8 {
-        0; # It is considered that UTF8 flag off for Perl 5.005.
-    }
-
-    sub utf8::upgrade {
-    }
-
-    sub utf8::downgrade {
-        1; # must always return true.
-    }
-
-    sub utf8::encode  {
-    }
-
-    sub utf8::decode {
-    }
-
-    *JSON::PP::JSON_PP_encode_ascii      = \&_encode_ascii;
-    *JSON::PP::JSON_PP_encode_latin1     = \&_encode_latin1;
-    *JSON::PP::JSON_PP_decode_surrogates = \&_decode_surrogates;
-    *JSON::PP::JSON_PP_decode_unicode    = \&_decode_unicode;
-
-    # missing in B module.
-    sub B::SVp_IOK () { 0x01000000; }
-    sub B::SVp_NOK () { 0x02000000; }
-    sub B::SVp_POK () { 0x04000000; }
-
-    $INC{'bytes.pm'} = 1; # dummy
-}
-
-
-
-sub _encode_ascii {
-    join('', map { $_ <= 127 ? chr($_) : sprintf('\u%04x', $_) } unpack('C*', 
$_[0]) );
-}
-
-
-sub _encode_latin1 {
-    join('', map { chr($_) } unpack('C*', $_[0]) );
-}
-
-
-sub _decode_surrogates { # from 
http://homepage1.nifty.com/nomenclator/unicode/ucs_utf.htm
-    my $uni = 0x10000 + (hex($_[0]) - 0xD800) * 0x400 + (hex($_[1]) - 0xDC00); 
# from perlunicode
-    my $bit = unpack('B32', pack('N', $uni));
-
-    if ( $bit =~ /^00000000000(...)(......)(......)(......)$/ ) {
-        my ($w, $x, $y, $z) = ($1, $2, $3, $4);
-        return pack('B*', sprintf('11110%s10%s10%s10%s', $w, $x, $y, $z));
-    }
-    else {
-        Carp::croak("Invalid surrogate pair");
-    }
-}
-
-
-sub _decode_unicode {
-    my ($u) = @_;
-    my ($utf8bit);
-
-    if ( $u =~ /^00([89a-f][0-9a-f])$/i ) { # 0x80-0xff
-         return pack( 'H2', $1 );
-    }
-
-    my $bit = unpack("B*", pack("H*", $u));
-
-    if ( $bit =~ /^00000(.....)(......)$/ ) {
-        $utf8bit = sprintf('110%s10%s', $1, $2);
-    }
-    elsif ( $bit =~ /^(....)(......)(......)$/ ) {
-        $utf8bit = sprintf('1110%s10%s10%s', $1, $2, $3);
-    }
-    else {
-        Carp::croak("Invalid escaped unicode");
-    }
-
-    return pack('B*', $utf8bit);
-}
-
-
-sub JSON::PP::incr_parse {
-    local $Carp::CarpLevel = 1;
-    ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_parse( @_ );
-}
-
-
-sub JSON::PP::incr_text {
-    $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new;
-
-    if ( $_[0]->{_incr_parser}->{incr_parsing} ) {
-        Carp::croak("incr_text can not be called when the incremental parser 
already started parsing");
-    }
-
-    $_[0]->{_incr_parser}->{incr_text} = $_[1] if ( @_ > 1 );
-    $_[0]->{_incr_parser}->{incr_text};
-}
-
-
-sub JSON::PP::incr_skip {
-    ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_skip;
-}
-
-
-sub JSON::PP::incr_reset {
-    ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_reset;
-}
-
-
-1;
-__END__
-
-=pod
-
-=head1 NAME
-
-JSON::PP5005 - Helper module in using JSON::PP in Perl 5.005
-
-=head1 DESCRIPTION
-
-JSON::PP calls internally.
-
-=head1 AUTHOR
-
-Makamaka Hannyaharamitu, E<lt>makamaka[at]cpan.orgE<gt>
-
-
-=head1 COPYRIGHT AND LICENSE
-
-Copyright 2007-2010 by Makamaka Hannyaharamitu
-
-This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself. 
-
-=cut
-

http://git-wip-us.apache.org/repos/asf/incubator-hawq/blob/b7c8717b/src/include/catalog/JSON/PP56.pm
----------------------------------------------------------------------
diff --git a/src/include/catalog/JSON/PP56.pm b/src/include/catalog/JSON/PP56.pm
deleted file mode 100644
index d5d8bfb..0000000
--- a/src/include/catalog/JSON/PP56.pm
+++ /dev/null
@@ -1,198 +0,0 @@
-package JSON::PP56;
-
-use 5.006;
-use strict;
-
-my @properties;
-
-$JSON::PP56::VERSION = '1.08';
-
-BEGIN {
-
-    sub utf8::is_utf8 {
-        my $len =  length $_[0]; # char length
-        {
-            use bytes; #  byte length;
-            return $len != length $_[0]; # if !=, UTF8-flagged on.
-        }
-    }
-
-
-    sub utf8::upgrade {
-        ; # noop;
-    }
-
-
-    sub utf8::downgrade ($;$) {
-        return 1 unless ( utf8::is_utf8( $_[0] ) );
-
-        if ( _is_valid_utf8( $_[0] ) ) {
-            my $downgrade;
-            for my $c ( unpack( "U*", $_[0] ) ) {
-                if ( $c < 256 ) {
-                    $downgrade .= pack("C", $c);
-                }
-                else {
-                    $downgrade .= pack("U", $c);
-                }
-            }
-            $_[0] = $downgrade;
-            return 1;
-        }
-        else {
-            Carp::croak("Wide character in subroutine entry") unless ( $_[1] );
-            0;
-        }
-    }
-
-
-    sub utf8::encode ($) { # UTF8 flag off
-        if ( utf8::is_utf8( $_[0] ) ) {
-            $_[0] = pack( "C*", unpack( "C*", $_[0] ) );
-        }
-        else {
-            $_[0] = pack( "U*", unpack( "C*", $_[0] ) );
-            $_[0] = pack( "C*", unpack( "C*", $_[0] ) );
-        }
-    }
-
-
-    sub utf8::decode ($) { # UTF8 flag on
-        if ( _is_valid_utf8( $_[0] ) ) {
-            utf8::downgrade( $_[0] );
-            $_[0] = pack( "U*", unpack( "U*", $_[0] ) );
-        }
-    }
-
-
-    *JSON::PP::JSON_PP_encode_ascii      = \&_encode_ascii;
-    *JSON::PP::JSON_PP_encode_latin1     = \&_encode_latin1;
-    *JSON::PP::JSON_PP_decode_surrogates = \&JSON::PP::_decode_surrogates;
-    *JSON::PP::JSON_PP_decode_unicode    = \&JSON::PP::_decode_unicode;
-
-    unless ( defined &B::SVp_NOK ) { # missing in B module.
-        eval q{ sub B::SVp_NOK () { 0x02000000; } };
-    }
-
-}
-
-
-
-sub _encode_ascii {
-    join('',
-        map {
-            $_ <= 127 ?
-                chr($_) :
-            $_ <= 65535 ?
-                sprintf('\u%04x', $_) : sprintf('\u%x\u%x', 
JSON::PP::_encode_surrogates($_));
-        } _unpack_emu($_[0])
-    );
-}
-
-
-sub _encode_latin1 {
-    join('',
-        map {
-            $_ <= 255 ?
-                chr($_) :
-            $_ <= 65535 ?
-                sprintf('\u%04x', $_) : sprintf('\u%x\u%x', 
JSON::PP::_encode_surrogates($_));
-        } _unpack_emu($_[0])
-    );
-}
-
-
-sub _unpack_emu { # for Perl 5.6 unpack warnings
-    return   !utf8::is_utf8($_[0]) ? unpack('C*', $_[0]) 
-           : _is_valid_utf8($_[0]) ? unpack('U*', $_[0])
-           : unpack('C*', $_[0]);
-}
-
-
-sub _is_valid_utf8 {
-    my $str = $_[0];
-    my $is_utf8;
-
-    while ($str =~ /(?:
-          (
-             [\x00-\x7F]
-            |[\xC2-\xDF][\x80-\xBF]
-            |[\xE0][\xA0-\xBF][\x80-\xBF]
-            |[\xE1-\xEC][\x80-\xBF][\x80-\xBF]
-            |[\xED][\x80-\x9F][\x80-\xBF]
-            |[\xEE-\xEF][\x80-\xBF][\x80-\xBF]
-            |[\xF0][\x90-\xBF][\x80-\xBF][\x80-\xBF]
-            |[\xF1-\xF3][\x80-\xBF][\x80-\xBF][\x80-\xBF]
-            |[\xF4][\x80-\x8F][\x80-\xBF][\x80-\xBF]
-          )
-        | (.)
-    )/xg)
-    {
-        if (defined $1) {
-            $is_utf8 = 1 if (!defined $is_utf8);
-        }
-        else {
-            $is_utf8 = 0 if (!defined $is_utf8);
-            if ($is_utf8) { # eventually, not utf8
-                return;
-            }
-        }
-    }
-
-    return $is_utf8;
-}
-
-
-sub JSON::PP::incr_parse {
-    local $Carp::CarpLevel = 1;
-    ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_parse( @_ );
-}
-
-
-sub JSON::PP::incr_text : lvalue {
-    $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new;
-
-    if ( $_[0]->{_incr_parser}->{incr_parsing} ) {
-        Carp::croak("incr_text can not be called when the incremental parser 
already started parsing");
-    }
-    $_[0]->{_incr_parser}->{incr_text};
-}
-
-
-sub JSON::PP::incr_skip {
-    ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_skip;
-}
-
-
-sub JSON::PP::incr_reset {
-    ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_reset;
-}
-
-
-1;
-__END__
-
-=pod
-
-=head1 NAME
-
-JSON::PP56 - Helper module in using JSON::PP in Perl 5.6
-
-=head1 DESCRIPTION
-
-JSON::PP calls internally.
-
-=head1 AUTHOR
-
-Makamaka Hannyaharamitu, E<lt>makamaka[at]cpan.orgE<gt>
-
-
-=head1 COPYRIGHT AND LICENSE
-
-Copyright 2007-2009 by Makamaka Hannyaharamitu
-
-This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself. 
-
-=cut
-

http://git-wip-us.apache.org/repos/asf/incubator-hawq/blob/b7c8717b/src/include/catalog/JSON/PP58.pm
----------------------------------------------------------------------
diff --git a/src/include/catalog/JSON/PP58.pm b/src/include/catalog/JSON/PP58.pm
deleted file mode 100644
index 1174fc4..0000000
--- a/src/include/catalog/JSON/PP58.pm
+++ /dev/null
@@ -1,93 +0,0 @@
-package JSON::PP58;
-
-use 5.008;
-use strict;
-
-my @properties;
-
-$JSON::PP58::VERSION = '1.03';
-
-
-BEGIN {
-
-    unless ( defined &utf8::is_utf8 ) {
-       require Encode;
-       *utf8::is_utf8 = *Encode::is_utf8;
-    }
-
-    *JSON::PP::JSON_PP_encode_ascii      = \&JSON::PP::_encode_ascii;
-    *JSON::PP::JSON_PP_encode_latin1     = \&JSON::PP::_encode_latin1;
-    *JSON::PP::JSON_PP_decode_surrogates = \&JSON::PP::_decode_surrogates;
-    *JSON::PP::JSON_PP_decode_unicode    = \&JSON::PP::_decode_unicode;
-
-    if ($] >= 5.008 and $] < 5.008003) { # join() in 5.8.0 - 5.8.2 is broken.
-        package JSON::PP;
-        require subs;
-        subs->import('join');
-        eval q|
-            sub join {
-                return '' if (@_ < 2);
-                my $j   = shift;
-                my $str = shift;
-                for (@_) { $str .= $j . $_; }
-                return $str;
-            }
-        |;
-    }
-
-}
-
-
-sub JSON::PP::incr_parse {
-    local $Carp::CarpLevel = 1;
-    ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_parse( @_ );
-}
-
-
-sub JSON::PP::incr_text : lvalue {
-    $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new;
-
-    if ( $_[0]->{_incr_parser}->{incr_parsing} ) {
-        Carp::croak("incr_text can not be called when the incremental parser 
already started parsing");
-    }
-    $_[0]->{_incr_parser}->{incr_text};
-}
-
-
-sub JSON::PP::incr_skip {
-    ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_skip;
-}
-
-
-sub JSON::PP::incr_reset {
-    ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_reset;
-}
-
-
-1;
-__END__
-
-=pod
-
-=head1 NAME
-
-JSON::PP58 - Helper module in using JSON::PP in Perl 5.8 and lator
-
-=head1 DESCRIPTION
-
-JSON::PP calls internally.
-
-=head1 AUTHOR
-
-Makamaka Hannyaharamitu, E<lt>makamaka[at]cpan.orgE<gt>
-
-
-=head1 COPYRIGHT AND LICENSE
-
-Copyright 2008-2009 by Makamaka Hannyaharamitu
-
-This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself. 
-
-=cut
-

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