There is now rudimentary support for converting parrot objects to
JSON strings.
11:56 <Coke> JSON?
11:56 <purl> well, JSON is Javascript Object Notation, at
http://www.crockford.com/JSON/
From the SYNPOSIS:
+ # generate a JSON representation of a PMC.
+ $S0 = _json( $P0 )
+
+ # generate a PMC from a JSON representation:
+ $P1 = _json_to_pmc( "[1,2,3]" )
+ #$P1 is now a array-like container PMC with three Integer elements.
+
+ .end
+ .include 'library/JSON.imc'
Some notes:
Specific type information is lost. Expect a does-like behavior: if
you're one of the 30 different PMC array types, you're an array in JSON.
It's (mostly) reversible: you can marshall the PMC to a generic JSON,
then unmarshall it back to a similar PMC. (You can also trade these
JSON strings with anything else that speaks JSON.) This is a contrast
to free/thaw, which are parrot only, but capture enough information
to reproduce the specific PMC faithfully. {{ Except for the part
where _json_to_pmc isn't done yet, of course. }}
From the TODO:
+=item Hashed subentries are not entirely pretty yet.
+
+=item Pending a more comprehensive test suite from Roger Browne
+
+=item String Escaping
+
+=item implement _jsan_to_pmc
Sample:
.sub test :main
$P1 = new .Boolean
$P1 = 0
$P2 = new .Float
$P2 = 1.234
$S3 = "hello"
$P5 = new .Hash
$P5["a"]= 1
$P5["b"]= "two"
$P5["c"]= 3.14
$P4 = new .Array
$P4 = 4
$P4[0] = $P1
$P4[1] = $P2
$P4[2] = $S3
$P4[3] = $P5
$S0 = _json( $P4, 1 )
print $S0
.end
.include 'library/JSON.imc'
--
[
false,
1.234,
"hello",
{
"a" : 1,
"b" : "two",
"c" : 3.14
}
]
