RosettaCodeData/Task/General-FizzBuzz/AppleScript/general-fizzbuzz.applescript

128 lines
2.8 KiB
AppleScript

--------------------- GENERAL FIZZBUZZ -------------------
-- fizzEtc :: [(Int, String)] -> [Symbol]
on fizzEtc(rules)
-- A non-finite sequence of fizzEtc symbols,
-- as defined by the given list of rules.
script numberOrNoise
on |λ|(n)
script ruleMatch
on |λ|(a, mk)
set {m, k} to mk
if 0 = (n mod m) then
if integer is class of a then
k
else
a & k
end if
else
a
end if
end |λ|
end script
foldl(ruleMatch, n, rules)
end |λ|
end script
fmapGen(numberOrNoise, enumFrom(1))
end fizzEtc
--------------------------- TEST -------------------------
on run
unlines(take(20, ¬
fizzEtc({{3, "Fizz"}, {5, "Buzz"}, {7, "Baxx"}})))
end run
------------------------- GENERIC ------------------------
-- enumFrom :: Enum a => a -> [a]
on enumFrom(x)
script
property v : missing value
on |λ|()
if missing value is not v then
set v to 1 + v
else
set v to x
end if
return v
end |λ|
end script
end enumFrom
-- fmapGen <$> :: (a -> b) -> Gen [a] -> Gen [b]
on fmapGen(f, gen)
script
property g : mReturn(f)
on |λ|()
set v to gen's |λ|()
if v is missing value then
v
else
g's |λ|(v)
end if
end |λ|
end script
end fmapGen
-- foldl :: (a -> b -> a) -> a -> [b] -> a
on foldl(f, startValue, xs)
tell mReturn(f)
set v to startValue
set lng to length of xs
repeat with i from 1 to lng
set v to |λ|(v, item i of xs, i, xs)
end repeat
return v
end tell
end foldl
-- mReturn :: First-class m => (a -> b) -> m (a -> b)
on mReturn(f)
-- 2nd class handler function lifted into 1st class script wrapper.
if script is class of f then
f
else
script
property |λ| : f
end script
end if
end mReturn
-- take :: Int -> [a] -> [a]
-- take :: Int -> String -> String
on take(n, xs)
set ys to {}
repeat with i from 1 to n
set v to |λ|() of xs
if missing value is v then
return ys
else
set end of ys to v
end if
end repeat
return ys
end take
-- unlines :: [String] -> String
on unlines(xs)
-- A single string formed by the intercalation
-- of a list of strings with the newline character.
set {dlm, my text item delimiters} to ¬
{my text item delimiters, linefeed}
set s to xs as text
set my text item delimiters to dlm
s
end unlines