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| 1 : | blume | 275 | (* |
| 2 : | * Get the toplevel exports from a skeleton. | ||
| 3 : | * | ||
| 4 : | * (C) 1999 Lucent Technologies, Bell Laboratories | ||
| 5 : | * | ||
| 6 : | * contact: Matthias Blume (blume@cs.princeton.edu) | ||
| 7 : | *) | ||
| 8 : | signature SKELEXPORTS = sig | ||
| 9 : | val exports : Skeleton.decl -> SymbolSet.set | ||
| 10 : | end | ||
| 11 : | |||
| 12 : | structure SkelExports :> SKELEXPORTS = struct | ||
| 13 : | |||
| 14 : | structure SK = Skeleton | ||
| 15 : | structure SS = SymbolSet | ||
| 16 : | |||
| 17 : | fun exports d = let | ||
| 18 : | blume | 286 | fun e (SK.Bind (s, _), a) = SS.add (a, s) |
| 19 : | | e (SK.Local (l, b), a) = e (b, a) | ||
| 20 : | | e (SK.Par l, a) = foldl e a l | ||
| 21 : | | e (SK.Seq l, a) = foldl e a l | ||
| 22 : | | e (SK.Open _, a) = a (* cannot happen *) | ||
| 23 : | | e (SK.Ref _, a) = a | ||
| 24 : | blume | 275 | in |
| 25 : | e (d, SS.empty) | ||
| 26 : | end | ||
| 27 : | end |
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