! See http://factorcode.org/license.txt for BSD license.
USING: accessors kernel io.streams.string io strings splitting
sequences math math.parser assocs classes words namespaces make
-prettyprint hashtables mirrors tr json fry ;
+prettyprint hashtables mirrors tr json fry combinators ;
IN: json.writer
#! Writes the object out to a stream in JSON format
drop "null" write ;
M: string json-print ( obj -- )
- CHAR: " write1 "\"" split "\\\"" join CHAR: \r swap remove "\n" split "\\r\\n" join write CHAR: " write1 ;
+ CHAR: " write1 [
+ {
+ { CHAR: " [ "\\\"" write ] }
+ { CHAR: \r [ ] }
+ { CHAR: \n [ "\\r\\n" write ] }
+ [ write1 ]
+ } case
+ ] each CHAR: " write1 ;
M: integer json-print ( num -- )
number>string write ;
M: real json-print ( num -- )
>float number>string write ;
-M: sequence json-print ( array -- )
- CHAR: [ write1 [ >json ] map "," join write CHAR: ] write1 ;
+M: sequence json-print ( array -- )
+ CHAR: [ write1 [
+ unclip-last-slice swap
+ [ json-print CHAR: , write1 ] each
+ json-print
+ ] unless-empty CHAR: ] write1 ;
SYMBOL: jsvar-encode?
t jsvar-encode? set-global
-TR: jsvar-encode "-" "_" ;
-
-: tuple>fields ( object -- seq )
- <mirror>
- jsvar-encode? get
- '[ [ swap _ [ jsvar-encode ] when >json % ":" % >json % ] "" make ] { } assoc>map ;
-
-M: tuple json-print ( tuple -- )
- CHAR: { write1 tuple>fields "," join write CHAR: } write1 ;
-
-M: hashtable json-print ( hashtable -- )
- CHAR: { write1
- jsvar-encode? get
- '[ [ swap _ [ jsvar-encode ] when >json % CHAR: : , >json % ] "" make ] { } assoc>map
- "," join write
- CHAR: } write1 ;
+TR: jsvar-encode "-" "_" ;
+
+<PRIVATE
+
+: json-print-assoc ( assoc -- )
+ CHAR: { write1 >alist [
+ unclip-last-slice swap
+ jsvar-encode? get [
+ [
+ [ first jsvar-encode json-print ]
+ [ CHAR: : write1 second json-print ] bi
+ CHAR: , write1
+ ] each
+ [ first jsvar-encode json-print ]
+ [ CHAR: : write1 second json-print ] bi
+ ] [
+ [
+ [ first json-print ]
+ [ CHAR: : write1 second json-print ] bi
+ CHAR: , write1
+ ] each
+ [ first json-print ]
+ [ CHAR: : write1 second json-print ] bi
+ ] if
+ ] unless-empty CHAR: } write1 ;
+
+PRIVATE>
+
+M: tuple json-print ( tuple -- ) <mirror> json-print-assoc ;
+
+M: hashtable json-print ( hashtable -- ) json-print-assoc ;
M: word json-print name>> json-print ;