320 lines
12 KiB
Factor
320 lines
12 KiB
Factor
USING: help.syntax help.markup kernel sequences quotations
|
|
math arrays combinators ;
|
|
IN: generalizations
|
|
|
|
HELP: nsum
|
|
{ $values { "n" integer } }
|
|
{ $description "Adds the top " { $snippet "n" } " stack values." } ;
|
|
|
|
HELP: npick
|
|
{ $values { "n" integer } }
|
|
{ $description "A generalization of " { $link dup } ", "
|
|
{ $link over } " and " { $link pick } " that can work "
|
|
"for any stack depth. The nth item down the stack will be copied and "
|
|
"placed on the top of the stack."
|
|
}
|
|
{ $examples
|
|
{ $example
|
|
"USING: kernel generalizations prettyprint"
|
|
"sequences.generalizations ;"
|
|
""
|
|
"1 2 3 4 4 npick 5 narray ."
|
|
"{ 1 2 3 4 1 }"
|
|
}
|
|
"Some core words expressed in terms of " { $link npick } ":"
|
|
{ $table
|
|
{ { $link dup } { $snippet "1 npick" } }
|
|
{ { $link over } { $snippet "2 npick" } }
|
|
{ { $link pick } { $snippet "3 npick" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: ndup
|
|
{ $values { "n" integer } }
|
|
{ $description "A generalization of " { $link dup } ", "
|
|
{ $link 2dup } " and " { $link 3dup } " that can work "
|
|
"for any number of items. The n topmost items on the stack will be copied and "
|
|
"placed on the top of the stack."
|
|
}
|
|
{ $examples
|
|
{ $example
|
|
"USING: prettyprint generalizations kernel"
|
|
"sequences.generalizations ;"
|
|
""
|
|
"1 2 3 4 4 ndup 8 narray ."
|
|
"{ 1 2 3 4 1 2 3 4 }"
|
|
}
|
|
"Some core words expressed in terms of " { $link ndup } ":"
|
|
{ $table
|
|
{ { $link dup } { $snippet "1 ndup" } }
|
|
{ { $link 2dup } { $snippet "2 ndup" } }
|
|
{ { $link 3dup } { $snippet "3 ndup" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: dupn
|
|
{ $values { "n" integer } }
|
|
{ $description "Calls " { $link dup } " enough times that " { $snippet "n" } " references to the element at the top of the stack before " { $snippet "dupn" } " is called are on the top of the stack." }
|
|
{ $notes { $snippet "2 dupn" } " is equivalent to " { $link dup } ". " { $snippet "1 dupn" } " is a no-op. " { $snippet "0 dupn" } " is equivalent to " { $link drop } "." } ;
|
|
|
|
HELP: nnip
|
|
{ $values { "n" integer } }
|
|
{ $description "A generalization of " { $link nip } " and " { $link 2nip }
|
|
" that can work "
|
|
"for any number of items."
|
|
}
|
|
{ $examples
|
|
{ $example "USING: prettyprint generalizations kernel ;" "1 2 3 4 3 nnip ." "4" }
|
|
"Some core words expressed in terms of " { $link nnip } ":"
|
|
{ $table
|
|
{ { $link nip } { $snippet "1 nnip" } }
|
|
{ { $link 2nip } { $snippet "2 nnip" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: ndrop
|
|
{ $values { "n" integer } }
|
|
{ $description "A generalization of " { $link drop }
|
|
" that can work "
|
|
"for any number of items."
|
|
}
|
|
{ $examples
|
|
{ $example "USING: prettyprint generalizations kernel ;" "1 2 3 4 3 ndrop ." "1" }
|
|
"Some core words expressed in terms of " { $link ndrop } ":"
|
|
{ $table
|
|
{ { $link drop } { $snippet "1 ndrop" } }
|
|
{ { $link 2drop } { $snippet "2 ndrop" } }
|
|
{ { $link 3drop } { $snippet "3 ndrop" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: nrot
|
|
{ $values { "n" integer } }
|
|
{ $description "A generalization of " { $link rot } " that works for any "
|
|
"number of items on the stack. "
|
|
}
|
|
{ $examples
|
|
{ $example "USING: arrays generalizations kernel prettyprint ;" "1 2 3 4 4 nrot 4array ." "{ 2 3 4 1 }" }
|
|
"Some core words expressed in terms of " { $link nrot } ":"
|
|
{ $table
|
|
{ { $link swap } { $snippet "1 nrot" } }
|
|
{ { $link rot } { $snippet "2 nrot" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: -nrot
|
|
{ $values { "n" integer } }
|
|
{ $description "A generalization of " { $link -rot } " that works for any "
|
|
"number of items on the stack. "
|
|
}
|
|
{ $examples
|
|
{ $example "USING: arrays generalizations kernel prettyprint ;" "1 2 3 4 4 -nrot 4array ." "{ 4 1 2 3 }" }
|
|
"Some core words expressed in terms of " { $link -nrot } ":"
|
|
{ $table
|
|
{ { $link swap } { $snippet "1 -nrot" } }
|
|
{ { $link -rot } { $snippet "2 -nrot" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: ndip
|
|
{ $values { "n" integer } }
|
|
{ $description "A generalization of " { $link dip } " that can work "
|
|
"for any stack depth. The quotation will be called with a stack that "
|
|
"has 'n' items removed first. The 'n' items are then put back on the "
|
|
"stack. The quotation can consume and produce any number of items."
|
|
}
|
|
{ $examples
|
|
{ $example "USING: arrays generalizations kernel prettyprint ;" "1 2 [ dup ] 1 ndip 3array ." "{ 1 1 2 }" }
|
|
{ $example "USING: arrays generalizations kernel prettyprint ;" "1 2 3 [ drop ] 2 ndip 2array ." "{ 2 3 }" }
|
|
"Some core words expressed in terms of " { $link ndip } ":"
|
|
{ $table
|
|
{ { $link dip } { $snippet "1 ndip" } }
|
|
{ { $link 2dip } { $snippet "2 ndip" } }
|
|
{ { $link 3dip } { $snippet "3 ndip" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: nkeep
|
|
{ $values { "n" integer } }
|
|
{ $description "A generalization of " { $link keep } " that can work "
|
|
"for any stack depth. The first " { $snippet "n" } " items after the quotation will be "
|
|
"saved, the quotation called, and the items restored."
|
|
}
|
|
{ $examples
|
|
{ $example
|
|
"USING: generalizations kernel prettyprint"
|
|
"sequences.generalizations ;"
|
|
""
|
|
"1 2 3 4 5 [ drop drop drop drop drop 99 ] 5 nkeep 6 narray ."
|
|
"{ 99 1 2 3 4 5 }"
|
|
}
|
|
"Some core words expressed in terms of " { $link nkeep } ":"
|
|
{ $table
|
|
{ { $link keep } { $snippet "1 nkeep" } }
|
|
{ { $link 2keep } { $snippet "2 nkeep" } }
|
|
{ { $link 3keep } { $snippet "3 nkeep" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: ncurry
|
|
{ $values { "quot" quotation } { "n" integer } }
|
|
{ $description "A generalization of " { $link curry } " that can work for any stack depth."
|
|
}
|
|
{ $examples
|
|
"Some core words expressed in terms of " { $link ncurry } ":"
|
|
{ $table
|
|
{ { $link curry } { $snippet "1 ncurry" } }
|
|
{ { $link 2curry } { $snippet "2 ncurry" } }
|
|
{ { $link 3curry } { $snippet "3 ncurry" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: nwith
|
|
{ $values { "quot" quotation } { "n" integer } }
|
|
{ $description "A generalization of " { $link with } " that can work for any stack depth."
|
|
}
|
|
{ $examples
|
|
"Some core words expressed in terms of " { $link nwith } ":"
|
|
{ $table
|
|
{ { $link with } { $snippet "1 nwith" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: napply
|
|
{ $values { "quot" quotation } { "n" integer } }
|
|
{ $description "A generalization of " { $link bi@ } " and " { $link tri@ } " that can work for any stack depth."
|
|
}
|
|
{ $examples
|
|
"Some core words expressed in terms of " { $link napply } ":"
|
|
{ $table
|
|
{ { $link call } { $snippet "1 napply" } }
|
|
{ { $link bi@ } { $snippet "2 napply" } }
|
|
{ { $link tri@ } { $snippet "3 napply" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: ncleave
|
|
{ $values { "quots" "a sequence of quotations" } { "n" integer } }
|
|
{ $description "A generalization of " { $link cleave } " and " { $link 2cleave } " that can work for any quotation arity."
|
|
}
|
|
{ $examples
|
|
"Some core words expressed in terms of " { $link ncleave } ":"
|
|
{ $table
|
|
{ { $link cleave } { $snippet "1 ncleave" } }
|
|
{ { $link 2cleave } { $snippet "2 ncleave" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: nspread
|
|
{ $values { "quots" "a sequence of quotations" } { "n" integer } }
|
|
{ $description "A generalization of " { $link spread } " that can work for any quotation arity."
|
|
} ;
|
|
|
|
HELP: cleave*
|
|
{ $values { "n" integer } }
|
|
{ $description "Like " { $link cleave } ", but instead of taking a single array of quotations, cleaves using quotations taken from the top " { $snippet "n" } " elements of the datastack." }
|
|
{ $notes "This word can be used with " { $link apply-curry } " to generalize the " { $snippet "bi-curry@ bi" } " or " { $snippet "tri-curry@ tri" } " dataflow patterns." } ;
|
|
|
|
HELP: spread*
|
|
{ $values { "n" integer } }
|
|
{ $description "Like " { $link spread } ", but instead of taking a single array of quotations, spreads using quotations taken from the top " { $snippet "n" } " elements of the datastack." }
|
|
{ $notes "This word can be used with " { $link apply-curry } " to generalize the " { $snippet "bi-curry@ bi*" } " or " { $snippet "tri-curry@ tri*" } " dataflow patterns." } ;
|
|
|
|
HELP: apply-curry
|
|
{ $values { "a..." { $snippet "n" } " values on the datastack" } { "quot" quotation } { "n" integer } }
|
|
{ $description "Curries each of the top " { $snippet "n" } " items of the datastack onto " { $snippet "quot" } ", leaving " { $snippet "n" } " quotations on the datastack. A generalization of " { $link bi-curry@ } " and " { $link tri-curry@ } "." }
|
|
{ $notes "This word can be used with " { $link cleave* } " and " { $link spread* } " to generalize dataflow patterns such as " { $snippet "bi-curry@ bi" } ", " { $snippet "tri-curry@ tri" } ", " { $snippet "bi-curry@ bi*" } ", and " { $snippet "tri-curry@ tri*" } "." } ;
|
|
|
|
HELP: cleave-curry
|
|
{ $values { "a" object } { "quot..." { $snippet "n" } " quotations on the datastack" } { "n" integer } }
|
|
{ $description "Curries " { $snippet "a" } " onto the " { $snippet "n" } " quotations on the top of the datastack. A generalization of " { $link bi-curry } " and " { $link tri-curry } "." }
|
|
{ $notes "This word can be used with " { $link cleave* } " and " { $link spread* } " to generalize dataflow patterns such as " { $snippet "bi-curry bi" } ", " { $snippet "tri-curry tri" } ", " { $snippet "bi-curry bi*" } ", and " { $snippet "tri-curry tri*" } "." } ;
|
|
|
|
HELP: spread-curry
|
|
{ $values { "a..." { $snippet "n" } " objects on the datastack" } { "quot..." { $snippet "n" } " quotations on the datastack" } { "n" integer } }
|
|
{ $description "Curries the " { $snippet "n" } " quotations on the top of the datastack with the " { $snippet "n" } " values just below them. A generalization of " { $link bi-curry* } " and " { $link tri-curry* } "." }
|
|
{ $notes "This word can be used with " { $link cleave* } " and " { $link spread* } " to generalize dataflow patterns such as " { $snippet "bi-curry* bi" } ", " { $snippet "tri-curry* tri" } ", " { $snippet "bi-curry* bi*" } ", and " { $snippet "tri-curry* tri*" } "." } ;
|
|
|
|
HELP: mnswap
|
|
{ $values { "m" integer } { "n" integer } }
|
|
{ $description "Swaps the top " { $snippet "m" } " stack elements with the " { $snippet "n" } " elements directly underneath." }
|
|
{ $examples
|
|
"Some core words expressed in terms of " { $link mnswap } ":"
|
|
{ $table
|
|
{ { $link swap } { $snippet "1 1 mnswap" } }
|
|
{ { $link rot } { $snippet "2 1 mnswap" } }
|
|
{ { $link -rot } { $snippet "1 2 mnswap" } }
|
|
}
|
|
} ;
|
|
|
|
HELP: nweave
|
|
{ $values { "n" integer } }
|
|
{ $description "Copies the top " { $snippet "n" } " stack elements underneath each one of the " { $snippet "n" } " elements below." }
|
|
{ $examples
|
|
{ $example
|
|
"USING: arrays kernel generalizations prettyprint ;"
|
|
"\"e1\" \"e2\" \"o1\" \"o2\" 2 nweave [ 3array ] 3dip 3array 2array ."
|
|
"{ { \"e1\" \"o1\" \"o2\" } { \"e2\" \"o1\" \"o2\" } }"
|
|
}
|
|
} ;
|
|
|
|
HELP: n*quot
|
|
{ $values
|
|
{ "n" integer } { "quot" quotation }
|
|
{ "quotquot" quotation }
|
|
}
|
|
{ $examples
|
|
{ $example "USING: generalizations prettyprint math ;"
|
|
"3 [ + ] n*quot ."
|
|
"[ + + + ]"
|
|
}
|
|
}
|
|
{ $description "Construct a quotation containing the contents of " { $snippet "seq" } " repeated " { $snippet "n"} " times." } ;
|
|
|
|
ARTICLE: "shuffle-generalizations" "Generalized shuffle words"
|
|
{ $subsections
|
|
ndup
|
|
dupn
|
|
npick
|
|
nrot
|
|
-nrot
|
|
nnip
|
|
ndrop
|
|
mnswap
|
|
nweave
|
|
} ;
|
|
|
|
ARTICLE: "combinator-generalizations" "Generalized combinators"
|
|
{ $subsections
|
|
ndip
|
|
nkeep
|
|
napply
|
|
ncleave
|
|
nspread
|
|
cleave*
|
|
spread*
|
|
apply-curry
|
|
cleave-curry
|
|
spread-curry
|
|
} ;
|
|
|
|
ARTICLE: "other-generalizations" "Additional generalizations"
|
|
{ $subsections
|
|
ncurry
|
|
nwith
|
|
nsum
|
|
} ;
|
|
|
|
ARTICLE: "generalizations" "Generalized shuffle words and combinators"
|
|
"The " { $vocab-link "generalizations" } " vocabulary defines a number of stack shuffling words and combinators for use in "
|
|
"macros where the arity of the input quotations depends on an "
|
|
"input parameter."
|
|
{ $subsections
|
|
"shuffle-generalizations"
|
|
"combinator-generalizations"
|
|
"other-generalizations"
|
|
}
|
|
"Also see the " { $vocab-link "sequences.generalizations" } " vocabulary for generalized sequence operations." ;
|
|
|
|
ABOUT: "generalizations"
|