adamc@151
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1 con stringify = fold (fn nm :: Name => fn u :: Unit => fn t :: {Type} => [nm = string] ++ t) []
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2
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adamc@151
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3 signature S = sig
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4 con rs :: {Unit}
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5 val names : $(stringify rs)
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6 end
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7
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adamc@151
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8 signature S' = sig
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9 con rs :: {Unit}
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10
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11 val handler : $(stringify rs) -> page
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12 val page : unit -> page
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13 end
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14
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adamc@151
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15 functor F (M : S) : S' where con rs = M.rs = struct
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16 con rs = M.rs
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17
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18 val handler = fn x : $(stringify M.rs) => <html><body>
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19 {fold [fn rs :: {Unit} => $(stringify rs) -> $(stringify rs) -> xml body [] []]
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20 (fn nm :: Name => fn u :: Unit => fn rest :: {Unit} =>
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21 fn f : $(stringify rest) -> $(stringify rest) -> xml body [] [] =>
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22 fn names : $(stringify ([nm] ++ rest)) =>
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23 fn x : $(stringify ([nm] ++ rest)) =>
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24 <body><li> {cdata names.nm}: {cdata x.nm}</li> {f (names -- nm) (x -- nm)}</body>)
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25 (fn names => fn x => <body></body>)
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26 [M.rs] M.names x}
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27 </body></html>
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28
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29 val page = fn () => <html><body>
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30 <lform>
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31 {fold [fn rs :: {Unit} => xml lform [] (stringify rs)]
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32 (fn nm :: Name => fn u :: Unit => fn rest :: {Unit} =>
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33 fn frag : xml lform [] (stringify rest) =>
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34 <lform><li> <textbox{nm}/></li> {useMore frag}</lform>)
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35 <lform></lform>
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36 [rs]}
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37
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38 <submit action={handler}/>
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39 </lform>
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40 </body></html>
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41 end
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42
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43 structure M = F(struct
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44 con rs = [A, B, C]
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45
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46 val names = {A = "A", B = "B", C = "C"}
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47 end)
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48
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49 open M
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50
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