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78 lines
2.5 KiB
Plaintext
78 lines
2.5 KiB
Plaintext
--# -path=.:prelude
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concrete NumeralEng of Numeral = open Prelude in {
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lincat
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Numeral = {s : Str} ; ---{s : CardOrd => Str ; n : Num} ;
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Digit = {s : DForm => CardOrd => Str} ;
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Sub10 = {s : DForm => CardOrd => Str ; n : Num} ;
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Sub100 = {s : CardOrd => Str ; n : Num} ;
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Sub1000 = {s : CardOrd => Str ; n : Num} ;
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Sub1000000 = {s : CardOrd => Str ; n : Num} ;
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lin num x = {s = x.s ! NCard} ; ----
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lin n2 = let two = mkNum "two" "twelve" "twenty" "second" in
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{s = \\f,c => case <f,c> of {
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<teen,NOrd> => "twelfth" ;
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_ => two.s ! f ! c
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}
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} ;
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lin n3 = mkNum "three" "thirteen" "thirty" "third" ;
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lin n4 = mkNum "four" "fourteen" "forty" "fourth" ;
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lin n5 = mkNum "five" "fifteen" "fifty" "fifth" ;
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lin n6 = regNum "six" ;
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lin n7 = regNum "seven" ;
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lin n8 = mkNum "eight" "eighteen" "eighty" "eighth" ;
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lin n9 = mkNum "nine" "nineteen" "ninety" "ninth" ;
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lin pot01 = mkNum "one" "eleven" "ten" "first" ** {n = Sg} ;
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lin pot0 d = d ** {n = Pl} ;
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lin pot110 = regCardOrd "ten" ** {n = Pl} ;
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lin pot111 = regCardOrd "eleven" ** {n = Pl} ;
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lin pot1to19 d = {s = d.s ! teen} ** {n = Pl} ;
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lin pot0as1 n = {s = n.s ! unit} ** {n = n.n} ;
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lin pot1 d = {s = d.s ! ten} ** {n = Pl} ;
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lin pot1plus d e = {
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s = \\c => d.s ! ten ! NCard ++ "-" ++ e.s ! unit ! c ; n = Pl} ;
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lin pot1as2 n = n ;
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lin pot2 d = {s = \\c => d.s ! unit ! NCard ++ mkCard c "hundred"} ** {n = Pl} ;
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lin pot2plus d e = {
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s = \\c => d.s ! unit ! NCard ++ "hundred" ++ "and" ++ e.s ! c ; n = Pl} ;
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lin pot2as3 n = n ;
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lin pot3 n = {
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s = \\c => n.s ! NCard ++ mkCard c "thousand" ; n = Pl} ;
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lin pot3plus n m = {
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s = \\c => n.s ! NCard ++ "thousand" ++ m.s ! c ; n = Pl} ;
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oper
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mkNum : Str -> Str -> Str -> Str -> {s : DForm => CardOrd => Str} =
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\two, twelve, twenty, second ->
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{s = table {
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unit => table {NCard => two ; NOrd => second} ;
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teen => \\c => mkCard c twelve ;
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ten => \\c => mkCard c twenty
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}
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} ;
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regNum : Str -> {s : DForm => CardOrd => Str} =
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\six -> mkNum six (six + "teen") (six + "ty") (regOrd six) ;
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regCardOrd : Str -> {s : CardOrd => Str} = \ten ->
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{s = table {NCard => ten ; NOrd => regOrd ten}} ;
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mkCard : CardOrd -> Str -> Str = \c,ten ->
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(regCardOrd ten).s ! c ;
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regOrd : Str -> Str = \ten ->
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case last ten of {
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"y" => init ten + "ieth" ;
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_ => ten + "th"
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} ;
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param Num = Sg | Pl ;
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CardOrd = NCard | NOrd ;
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DForm = unit | teen | ten ;
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}
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