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generalize stack effect of while, until, and produce

db4
Joe Groff 2010-03-05 22:42:05 -08:00
parent 9571bf6d4b
commit 17df15280e
2 changed files with 4 additions and 4 deletions
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4
core/kernel/kernel.factor
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@ -177,10 +177,10 @@ UNION: boolean POSTPONE: t POSTPONE: f ;
: do ( pred body -- pred body )
dup 2dip ; inline
: while ( ... pred: ( ... -- ... ? ) body: ( ... -- ... ) -- ... )
: while ( ..a pred: ( ..a -- ..b ? ) body: ( ..b -- ..a ) -- ..b )
swap do compose [ loop ] curry when ; inline
: until ( ... pred: ( ... -- ... ? ) body: ( ... -- ... ) -- )
: until ( ..a pred: ( ..a -- ..b ? ) body: ( ..b -- ..a ) -- ..b )
[ [ not ] compose ] dip while ; inline
! Object protocol

4
core/sequences/sequences.factor
View File

@ -513,10 +513,10 @@ PRIVATE>
: collector ( quot -- quot' vec )
V{ } collector-for ; inline
: produce-as ( ... pred: ( ... -- ... ? ) quot: ( ... -- ... obj ) exemplar -- ... seq )
: produce-as ( ..a pred: ( ..a -- ..b ? ) quot: ( ..b -- ..a obj ) exemplar -- ..b seq )
dup [ collector-for [ while ] dip ] curry dip like ; inline
: produce ( ... pred: ( ... -- ... ? ) quot: ( ... -- ... obj ) -- ... seq )
: produce ( ..a pred: ( ..a -- ..b ? ) quot: ( ..b -- ..a obj ) -- ..b seq )
{ } produce-as ; inline
: follow ( ... obj quot: ( ... prev -- ... result/f ) -- ... seq )