NAME
Mojo::JSON - Minimalistic JSON
SYNOPSIS
use Mojo::JSON;
# Encode and decode JSON
my $json = Mojo::JSON->new;
my $bytes = $json->encode({foo => [1, 2], bar => 'hello!', baz => \1});
my $hash = $json->decode($bytes);
# Check for errors
my $json = Mojo::JSON->new;
if (defined(my $hash = $json->decode($bytes))) { say $hash->{message} }
else { say 'Error: ', $json->error }
# Use the alternative interface
use Mojo::JSON 'j';
my $bytes = j({foo => [1, 2], bar => 'hello!', baz => \1});
my $hash = j($bytes);DESCRIPTION
Mojo::JSON is a minimalistic and possibly the fastest pure-Perl implementation of RFC 4627.
It supports normal Perl data types like Scalar, Array reference, Hash reference and will try to call the TO_JSON method on blessed references, or stringify them if it doesn't exist. Differentiating between strings and numbers in Perl is hard, depending on how it has been used, a Scalar can be both at the same time. Since numeric comparisons on strings are very unlikely to happen intentionally, the numeric value always gets priority, so any Scalar that has been used in numeric context is considered a number.
[1, -2, 3] -> [1, -2, 3]
{"foo": "bar"} -> {foo => 'bar'}Literal names will be translated to and from Mojo::JSON constants or a similar native Perl value.
true -> Mojo::JSON->true
false -> Mojo::JSON->false
null -> undefIn addition Scalar references will be used to generate booleans, based on if their values are true or false.
\1 -> true
\0 -> falseDecoding UTF-16 (LE/BE) and UTF-32 (LE/BE) will be handled transparently, encoding will only generate UTF-8. The two Unicode whitespace characters u2028 and u2029 will always be escaped to make JSONP easier.
FUNCTIONS
Mojo::JSON implements the following functions, which can be imported individually.
j
my $bytes = j([1, 2, 3]);
my $bytes = j({foo => 'bar'});
my $array = j($bytes);
my $hash = j($bytes);Encode Perl data structure or decode JSON and return undef if decoding fails.
ATTRIBUTES
Mojo::JSON implements the following attributes.
error
my $err = $json->error;
$json = $json->error('Parser error');Parser errors.
METHODS
Mojo::JSON inherits all methods from Mojo::Base and implements the following new ones.
decode
my $array = $json->decode($bytes);
my $hash = $json->decode($bytes);Decode JSON to Perl data structure and return undef if decoding fails.
encode
my $bytes = $json->encode([1, 2, 3]);
my $bytes = $json->encode({foo => 'bar'});Encode Perl data structure to JSON.
false
my $false = Mojo::JSON->false;
my $false = $json->false;False value, used because Perl has no native equivalent.
true
my $true = Mojo::JSON->true;
my $true = $json->true;True value, used because Perl has no native equivalent.