write-msgpack ( obj -- )
MessagePack

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Vocabulary
msgpack

Inputs

obj

an object

Outputs
None

Word description
Encodes an object into the MessagePack format, writing to an output-stream.

Definition

IN: msgpack

GENERIC: write-msgpack ( obj -- )

Methods

USING: io kernel msgpack ;

M: +msgpack-nil+ write-msgpack drop 192 write1 ;


USING: assocs kernel msgpack msgpack.private ;

M: assoc write-msgpack
    dup assoc-size write-map-header
    [ [ write-msgpack ] bi@ ] assoc-each ;


USING: byte-arrays combinators endian io kernel math msgpack
sequences ;

M: byte-array write-msgpack
    dup length {
        { [ dup 255 <= ] [ 196 write1 write1 ] }
        { [ dup 65535 <= ] [ 197 write1 2 >be write ] }
        { [ dup 4294967295 <= ] [ 198 write1 4 >be write ] }
        [ cannot-convert ]
    } cond write ;


USING: io kernel msgpack ;

M: f write-msgpack drop 194 write1 ;


USING: endian io math msgpack ;

M: float write-msgpack 203 write1 double>bits 8 >be write ;


USING: combinators endian io kernel math msgpack ;

M: integer write-msgpack
    dup 0 >= [
        {
            { [ dup 127 <= ] [ write1 ] }
            { [ dup 255 <= ] [ 204 write1 write1 ] }
            { [ dup 65535 <= ] [ 205 write1 2 >be write ] }
            { [ dup 4294967295 <= ] [ 206 write1 4 >be write ] }
            {
                [ dup 18446744073709551615 <= ]
                [ 207 write1 8 >be write ]
            }
            [ cannot-convert ]
        } cond
    ] [
        {
            { [ dup -31 >= ] [ write1 ] }
            { [ dup -128 >= ] [ 208 write1 write1 ] }
            { [ dup -32768 >= ] [ 209 write1 2 >be write ] }
            {
                [ dup -2147483648 >= ]
                [ 210 write1 4 >be write ]
            }
            {
                [ dup -9223372036854775808 >= ]
                [ 211 write1 8 >be write ]
            }
            [ cannot-convert ]
        } cond
    ] if ;


USING: kernel msgpack msgpack.private sequences ;

M: sequence write-msgpack
    dup length write-array-header [ write-msgpack ] each ;


USING: combinators endian io io.encodings io.encodings.utf8
kernel math msgpack namespaces sequences strings ;

M: string write-msgpack
    dup length {
        { [ dup 31 <= ] [ 160 bitor write1 ] }
        { [ dup 255 <= ] [ 217 write1 write1 ] }
        { [ dup 65535 <= ] [ 218 write1 2 >be write ] }
        { [ dup 4294967295 <= ] [ 219 write1 4 >be write ] }
        [ cannot-convert ]
    } cond output-stream get utf8 encode-string ;


USING: io kernel msgpack ;

M: t write-msgpack drop 195 write1 ;