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combinators.cleave: add 2cleave and improve stack effect comments

db4
Eduardo Cavazos 2008-03-13 15:39:25 -06:00
parent 67562173a4
commit a5551f8f56
1 changed files with 14 additions and 2 deletions
extra/combinators/cleave

16
extra/combinators/cleave/cleave.factor Executable file → Normal file
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@ -15,9 +15,9 @@ IN: combinators.cleave
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: 2bi ( obj obj quot quot -- val val ) >r 2keep r> call ; inline
: 2bi ( x y p q -- p(x,y) q(x,y) ) >r 2keep r> call ; inline
: 2tri ( obj obj quot quot quot -- val val val )
: 2tri ( x y z p q r -- p(x,y,z) q(x,y,z) r(x,y,z) )
>r >r 2keep r> 2keep r> call ; inline
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
@ -36,6 +36,18 @@ MACRO: cleave ( seq -- )
[ drop ]
append ;
MACRO: 2cleave ( seq -- )
dup
[ drop [ 2dup ] ] map concat
swap
dup
[ drop [ >r >r ] ] map concat
swap
[ [ r> r> ] append ] map concat
3append
[ 2drop ]
append ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! The spread family
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!