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wrapped output-stream get into it's own typed word

db4
Sascha Matzke 2010-03-24 08:28:22 +01:00
parent b34acc0752
commit 9f52a0aaf2
1 changed files with 6 additions and 3 deletions
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9
extra/bson/writer/writer.factor
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@ -17,13 +17,16 @@ CONSTANT: INT64-SIZE 8
PRIVATE>
TYPED: get-output ( -- stream: byte-vector )
output-stream get ; inline
TYPED: with-length ( quot -- bytes-written: integer start-index: integer )
[ output-stream get [ length ] [ ] bi ] dip
[ get-output [ length ] [ ] bi ] dip
call length swap [ - ] keep ; inline
: (with-length-prefix) ( ..a quot: ( ..a -- ..b ) length-quot: ( bytes-written -- length ) -- ..b )
: (with-length-prefix) ( quot: ( .. -- .. ) length-quot: ( bytes-written -- length ) -- )
[ [ B{ 0 0 0 0 } write ] prepose with-length ] dip swap
[ call output-stream get underlying>> ] dip set-alien-unsigned-4 ; inline
[ call( written -- length ) get-output underlying>> ] dip set-alien-unsigned-4 ; inline
: with-length-prefix ( quot: ( .. -- .. ) -- )
[ ] (with-length-prefix) ; inline