Better docs for generalizations

db4
Slava Pestov 2008-11-27 21:53:53 -06:00
parent 5402162df5
commit 0c19abc0c1
2 changed files with 139 additions and 29 deletions

View File

@ -17,6 +17,15 @@ HELP: narray
{ $description "A generalization of " { $link 1array } ", " { $description "A generalization of " { $link 1array } ", "
{ $link 2array } ", " { $link 3array } " and " { $link 4array } " " { $link 2array } ", " { $link 3array } " and " { $link 4array } " "
"that constructs an array from the top " { $snippet "n" } " elements of the stack." "that constructs an array from the top " { $snippet "n" } " elements of the stack."
}
{ $examples
"Some core words expressed in terms of " { $link narray } ":"
{ $table
{ { $link 1array } { $snippet "1 narray" } }
{ { $link 2array } { $snippet "2 narray" } }
{ { $link 3array } { $snippet "3 narray" } }
{ { $link 4array } { $snippet "4 narray" } }
}
} ; } ;
{ nsequence narray } related-words { nsequence narray } related-words
@ -26,6 +35,15 @@ HELP: firstn
{ $description "A generalization of " { $link first } ", " { $description "A generalization of " { $link first } ", "
{ $link first2 } ", " { $link first3 } " and " { $link first4 } " " { $link first2 } ", " { $link first3 } " and " { $link first4 } " "
"that pushes the first " { $snippet "n" } " elements of a sequence on the stack." "that pushes the first " { $snippet "n" } " elements of a sequence on the stack."
}
{ $examples
"Some core words expressed in terms of " { $link firstn } ":"
{ $table
{ { $link first } { $snippet "1 firstn" } }
{ { $link first2 } { $snippet "2 firstn" } }
{ { $link first3 } { $snippet "3 firstn" } }
{ { $link first4 } { $snippet "4 firstn" } }
}
} ; } ;
HELP: npick HELP: npick
@ -37,8 +55,13 @@ HELP: npick
} }
{ $examples { $examples
{ $example "USING: prettyprint generalizations ;" "1 2 3 4 4 npick .s" "1\n2\n3\n4\n1" } { $example "USING: prettyprint generalizations ;" "1 2 3 4 4 npick .s" "1\n2\n3\n4\n1" }
} "Some core words expressed in terms of " { $link npick } ":"
{ $see-also dup over pick } ; { $table
{ { $link dup } { $snippet "1 npick" } }
{ { $link over } { $snippet "2 npick" } }
{ { $link pick } { $snippet "3 npick" } }
}
} ;
HELP: ndup HELP: ndup
{ $values { "n" integer } } { $values { "n" integer } }
@ -49,8 +72,13 @@ HELP: ndup
} }
{ $examples { $examples
{ $example "USING: prettyprint generalizations ;" "1 2 3 4 4 ndup .s" "1\n2\n3\n4\n1\n2\n3\n4" } { $example "USING: prettyprint generalizations ;" "1 2 3 4 4 ndup .s" "1\n2\n3\n4\n1\n2\n3\n4" }
} "Some core words expressed in terms of " { $link ndup } ":"
{ $see-also dup 2dup 3dup } ; { $table
{ { $link dup } { $snippet "1 ndup" } }
{ { $link 2dup } { $snippet "2 ndup" } }
{ { $link 3dup } { $snippet "3 ndup" } }
}
} ;
HELP: nnip HELP: nnip
{ $values { "n" integer } } { $values { "n" integer } }
@ -60,8 +88,12 @@ HELP: nnip
} }
{ $examples { $examples
{ $example "USING: prettyprint generalizations ;" "1 2 3 4 3 nnip .s" "4" } { $example "USING: prettyprint generalizations ;" "1 2 3 4 3 nnip .s" "4" }
} "Some core words expressed in terms of " { $link nnip } ":"
{ $see-also nip 2nip } ; { $table
{ { $link nip } { $snippet "1 nnip" } }
{ { $link 2nip } { $snippet "2 nnip" } }
}
} ;
HELP: ndrop HELP: ndrop
{ $values { "n" integer } } { $values { "n" integer } }
@ -71,8 +103,13 @@ HELP: ndrop
} }
{ $examples { $examples
{ $example "USING: prettyprint generalizations ;" "1 2 3 4 3 ndrop .s" "1" } { $example "USING: prettyprint generalizations ;" "1 2 3 4 3 ndrop .s" "1" }
} "Some core words expressed in terms of " { $link ndrop } ":"
{ $see-also drop 2drop 3drop } ; { $table
{ { $link drop } { $snippet "1 ndrop" } }
{ { $link 2drop } { $snippet "2 ndrop" } }
{ { $link 3drop } { $snippet "3 ndrop" } }
}
} ;
HELP: nrot HELP: nrot
{ $values { "n" integer } } { $values { "n" integer } }
@ -81,8 +118,12 @@ HELP: nrot
} }
{ $examples { $examples
{ $example "USING: prettyprint generalizations ;" "1 2 3 4 4 nrot .s" "2\n3\n4\n1" } { $example "USING: prettyprint generalizations ;" "1 2 3 4 4 nrot .s" "2\n3\n4\n1" }
} "Some core words expressed in terms of " { $link nrot } ":"
{ $see-also rot -nrot } ; { $table
{ { $link swap } { $snippet "1 nrot" } }
{ { $link rot } { $snippet "2 nrot" } }
}
} ;
HELP: -nrot HELP: -nrot
{ $values { "n" integer } } { $values { "n" integer } }
@ -91,8 +132,12 @@ HELP: -nrot
} }
{ $examples { $examples
{ $example "USING: prettyprint generalizations ;" "1 2 3 4 4 -nrot .s" "4\n1\n2\n3" } { $example "USING: prettyprint generalizations ;" "1 2 3 4 4 -nrot .s" "4\n1\n2\n3" }
} "Some core words expressed in terms of " { $link -nrot } ":"
{ $see-also rot nrot } ; { $table
{ { $link swap } { $snippet "1 -nrot" } }
{ { $link -rot } { $snippet "2 -nrot" } }
}
} ;
HELP: nrev HELP: nrev
{ $values { "n" integer } } { $values { "n" integer } }
@ -100,11 +145,11 @@ HELP: nrev
} }
{ $examples { $examples
{ $example "USING: prettyprint generalizations ;" "1 2 3 4 4 nrev .s" "4\n3\n2\n1" } { $example "USING: prettyprint generalizations ;" "1 2 3 4 4 nrev .s" "4\n3\n2\n1" }
} "The " { $link spin } " word is equivalent to " { $snippet "3 nrev" } "."
{ $see-also rot nrot } ; } ;
HELP: ndip HELP: ndip
{ $values { "quot" quotation } { "n" number } } { $values { "quot" quotation } { "n" integer } }
{ $description "A generalization of " { $link dip } " that can work " { $description "A generalization of " { $link dip } " that can work "
"for any stack depth. The quotation will be called with a stack that " "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 " "has 'n' items removed first. The 'n' items are then put back on the "
@ -113,30 +158,93 @@ HELP: ndip
{ $examples { $examples
{ $example "USING: generalizations kernel prettyprint ;" "1 2 [ dup ] 1 ndip .s" "1\n1\n2" } { $example "USING: generalizations kernel prettyprint ;" "1 2 [ dup ] 1 ndip .s" "1\n1\n2" }
{ $example "USING: generalizations kernel prettyprint ;" "1 2 3 [ drop ] 2 ndip .s" "2\n3" } { $example "USING: generalizations kernel prettyprint ;" "1 2 3 [ drop ] 2 ndip .s" "2\n3" }
} "Some core words expressed in terms of " { $link ndip } ":"
{ $see-also dip 2dip } ; { $table
{ { $link dip } { $snippet "1 ndip" } }
{ { $link 2dip } { $snippet "2 ndip" } }
{ { $link 3dip } { $snippet "3 ndip" } }
}
} ;
HELP: nslip HELP: nslip
{ $values { "n" number } } { $values { "n" integer } }
{ $description "A generalization of " { $link slip } " that can work " { $description "A generalization of " { $link slip } " that can work "
"for any stack depth. The first " { $snippet "n" } " items after the quotation will be " "for any stack depth. The first " { $snippet "n" } " items after the quotation will be "
"removed from the stack, the quotation called, and the items restored." "removed from the stack, the quotation called, and the items restored."
} }
{ $examples { $examples
{ $example "USING: generalizations prettyprint ;" "[ 99 ] 1 2 3 4 5 5 nslip .s" "99\n1\n2\n3\n4\n5" } { $example "USING: generalizations prettyprint ;" "[ 99 ] 1 2 3 4 5 5 nslip .s" "99\n1\n2\n3\n4\n5" }
} "Some core words expressed in terms of " { $link nslip } ":"
{ $see-also slip nkeep } ; { $table
{ { $link slip } { $snippet "1 nslip" } }
{ { $link 2slip } { $snippet "2 nslip" } }
{ { $link 3slip } { $snippet "3 nslip" } }
}
} ;
HELP: nkeep HELP: nkeep
{ $values { "quot" quotation } { "n" number } } { $values { "quot" quotation } { "n" integer } }
{ $description "A generalization of " { $link keep } " that can work " { $description "A generalization of " { $link keep } " that can work "
"for any stack depth. The first " { $snippet "n" } " items after the quotation will be " "for any stack depth. The first " { $snippet "n" } " items after the quotation will be "
"saved, the quotation called, and the items restored." "saved, the quotation called, and the items restored."
} }
{ $examples { $examples
{ $example "USING: generalizations kernel prettyprint ;" "1 2 3 4 5 [ drop drop drop drop drop 99 ] 5 nkeep .s" "99\n1\n2\n3\n4\n5" } { $example "USING: generalizations kernel prettyprint ;" "1 2 3 4 5 [ drop drop drop drop drop 99 ] 5 nkeep .s" "99\n1\n2\n3\n4\n5" }
} "Some core words expressed in terms of " { $link nkeep } ":"
{ $see-also keep nslip } ; { $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 bi@ } { $snippet "1 napply" } }
{ { $link tri@ } { $snippet "2 napply" } }
}
} ;
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" } }
}
} ;
ARTICLE: "generalizations" "Generalized shuffle words and combinators" ARTICLE: "generalizations" "Generalized shuffle words and combinators"
"The " { $vocab-link "generalizations" } " vocabulary defines a number of stack shuffling words and combinators for use in " "The " { $vocab-link "generalizations" } " vocabulary defines a number of stack shuffling words and combinators for use in "
@ -155,12 +263,14 @@ $nl
{ $subsection nnip } { $subsection nnip }
{ $subsection ndrop } { $subsection ndrop }
{ $subsection nrev } { $subsection nrev }
{ $subsection mnswap }
"Generalized combinators:" "Generalized combinators:"
{ $subsection ndip } { $subsection ndip }
{ $subsection nslip } { $subsection nslip }
{ $subsection nkeep } { $subsection nkeep }
{ $subsection napply }
"Generalized quotation construction:"
{ $subsection ncurry } { $subsection ncurry }
{ $subsection nwith } { $subsection nwith } ;
{ $subsection napply } ;
ABOUT: "generalizations" ABOUT: "generalizations"

View File

@ -13,14 +13,14 @@ IN: generalizations
>> >>
MACRO: nsequence ( n seq -- quot ) MACRO: nsequence ( n seq -- )
[ [
[ drop <reversed> ] [ '[ _ _ new-sequence ] ] 2bi [ drop <reversed> ] [ '[ _ _ new-sequence ] ] 2bi
[ '[ @ [ _ swap set-nth-unsafe ] keep ] ] reduce [ '[ @ [ _ swap set-nth-unsafe ] keep ] ] reduce
] keep ] keep
'[ @ _ like ] ; '[ @ _ like ] ;
MACRO: narray ( n -- quot ) MACRO: narray ( n -- )
'[ _ { } nsequence ] ; '[ _ { } nsequence ] ;
MACRO: firstn ( n -- ) MACRO: firstn ( n -- )
@ -30,7 +30,7 @@ MACRO: firstn ( n -- )
bi prefix '[ _ cleave ] bi prefix '[ _ cleave ]
] if ; ] if ;
MACRO: npick ( n -- quot ) MACRO: npick ( n -- )
1- [ dup ] [ '[ _ dip swap ] ] repeat ; 1- [ dup ] [ '[ _ dip swap ] ] repeat ;
MACRO: ndup ( n -- ) MACRO: ndup ( n -- )
@ -51,7 +51,7 @@ MACRO: nnip ( n -- )
MACRO: ntuck ( n -- ) MACRO: ntuck ( n -- )
2 + '[ dup _ -nrot ] ; 2 + '[ dup _ -nrot ] ;
MACRO: nrev ( n -- quot ) MACRO: nrev ( n -- )
1 [a,b] [ ] [ '[ @ _ -nrot ] ] reduce ; 1 [a,b] [ ] [ '[ @ _ -nrot ] ] reduce ;
MACRO: ndip ( quot n -- ) MACRO: ndip ( quot n -- )