<PRIVATE
-TUPLE: chunking-seq { seq read-only } { n read-only } ;
-
-: check-groups ( n -- n )
- dup 0 <= [ "Invalid group count" throw ] when ; inline
-
-: new-groups ( seq n class -- groups )
- [ check-groups ] dip boa ; inline
+MIXIN: chunking
+INSTANCE: chunking sequence
GENERIC: group@ ( n groups -- from to seq )
-M: chunking-seq set-nth group@ <slice> 0 swap copy ;
-
-M: chunking-seq like drop { } like ; inline
+M: chunking set-nth group@ <slice> 0 swap copy ;
+M: chunking like drop { } like ; inline
MIXIN: subseq-chunking
-
+INSTANCE: subseq-chunking chunking
INSTANCE: subseq-chunking sequence
M: subseq-chunking nth group@ subseq ; inline
MIXIN: slice-chunking
-
+INSTANCE: slice-chunking chunking
INSTANCE: slice-chunking sequence
M: slice-chunking nth group@ <slice> ; inline
-
M: slice-chunking nth-unsafe group@ slice boa ; inline
-TUPLE: abstract-groups < chunking-seq ;
+MIXIN: abstract-groups
+INSTANCE: abstract-groups sequence
M: abstract-groups length
[ seq>> length ] [ n>> ] bi [ + 1 - ] keep /i ; inline
M: abstract-groups group@
[ n>> [ * dup ] keep + ] [ seq>> ] bi [ length min ] keep ; inline
-TUPLE: abstract-clumps < chunking-seq ;
+MIXIN: abstract-clumps
+INSTANCE: abstract-clumps sequence
M: abstract-clumps length
[ seq>> length 1 + ] [ n>> ] bi [-] ; inline
M: abstract-clumps group@
[ n>> over + ] [ seq>> ] bi ; inline
+TUPLE: chunking-seq { seq read-only } { n read-only } ;
+
+: check-groups ( n -- n )
+ dup 0 <= [ "Invalid group count" throw ] when ; inline
+
+: new-groups ( seq n class -- groups )
+ [ check-groups ] dip boa ; inline
+
PRIVATE>
-TUPLE: groups < abstract-groups ;
+TUPLE: groups < chunking-seq ;
+INSTANCE: groups subseq-chunking
+INSTANCE: groups abstract-groups
: <groups> ( seq n -- groups )
groups new-groups ; inline
-INSTANCE: groups subseq-chunking
-
-TUPLE: sliced-groups < abstract-groups ;
+TUPLE: sliced-groups < chunking-seq ;
+INSTANCE: sliced-groups slice-chunking
+INSTANCE: sliced-groups abstract-groups
: <sliced-groups> ( seq n -- groups )
sliced-groups new-groups ; inline
-INSTANCE: sliced-groups slice-chunking
-
-TUPLE: clumps < abstract-clumps ;
+TUPLE: clumps < chunking-seq ;
+INSTANCE: clumps subseq-chunking
+INSTANCE: clumps abstract-clumps
: <clumps> ( seq n -- clumps )
clumps new-groups ; inline
-INSTANCE: clumps subseq-chunking
-
-TUPLE: sliced-clumps < abstract-clumps ;
+TUPLE: sliced-clumps < chunking-seq ;
+INSTANCE: sliced-clumps slice-chunking
+INSTANCE: sliced-clumps abstract-clumps
: <sliced-clumps> ( seq n -- clumps )
sliced-clumps new-groups ; inline
-INSTANCE: sliced-clumps slice-chunking
-
: group ( seq n -- array ) <groups> { } like ;
: clump ( seq n -- array ) <clumps> { } like ;