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swap around io combinators to avoid a bunch of redundant "input-stream get"s in each-line, each-block, contents, etc.

db4
Joe Groff 2009-10-23 00:07:19 -05:00
parent 28f5347e71
commit d5d89f03a7
1 changed files with 26 additions and 17 deletions
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43
core/io/io.factor
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@ -87,42 +87,51 @@ SYMBOL: error-stream
: bl ( -- ) " " write ;
<PRIVATE
: each-morsel ( handler: ( data -- ) reader: ( -- data ) -- )
[ dup ] compose swap while drop ; inline
: stream-element-exemplar ( type -- exemplar )
<PRIVATE
: (stream-element-exemplar) ( type -- exemplar )
{
{ +byte+ [ B{ } ] }
{ +character+ [ "" ] }
} case ;
} case ; inline
: stream-element-exemplar ( stream -- exemplar )
stream-element-type (stream-element-exemplar) ;
: element-exemplar ( -- exemplar )
input-stream get
stream-element-type
stream-element-exemplar ;
input-stream get stream-element-exemplar ; inline
PRIVATE>
: each-line ( quot -- )
[ readln ] each-morsel ; inline
: each-stream-line ( stream quot -- )
swap [ stream-readln ] curry each-morsel ; inline
: lines ( -- seq )
[ ] accumulator [ each-line ] dip { } like ;
: each-line ( quot -- )
input-stream get swap each-stream-line ; inline
: stream-lines ( stream -- seq )
[ lines ] with-input-stream ;
[ [ ] accumulator [ each-stream-line ] dip { } like ] with-disposal ;
: contents ( -- seq )
[ 65536 read-partial dup ] [ ] produce nip
element-exemplar concat-as ;
: lines ( -- seq )
input-stream get stream-lines ; inline
: stream-contents ( stream -- seq )
[ contents ] with-input-stream ;
[
[ [ 65536 swap stream-read-partial dup ] curry [ ] produce nip ]
[ stream-element-exemplar concat-as ] bi
] with-disposal ;
: contents ( -- seq )
input-stream get stream-contents ; inline
: each-stream-block ( stream quot: ( block -- ) -- )
swap [ 8192 swap stream-read-partial ] curry each-morsel ; inline
: each-block ( quot: ( block -- ) -- )
[ 8192 read-partial ] each-morsel ; inline
input-stream get swap each-stream-block ; inline
: stream-copy ( in out -- )
[ [ [ write ] each-block ] with-output-stream ]