Mercurial > urweb
annotate demo/treeFun.urs @ 2184:1ecef02f67c5
More Elaborate work to avoid instantiating unification variables with out-of-scope regular variables
| author | Adam Chlipala <adam@chlipala.net> |
|---|---|
| date | Sat, 24 Oct 2015 17:23:07 -0400 |
| parents | 311ca1ae715d |
| children |
| rev | line source |
|---|---|
| adamc@469 | 1 functor Make(M : sig |
| adamc@469 | 2 type key |
| adamc@469 | 3 con id :: Name |
| adamc@469 | 4 con parent :: Name |
| adamc@469 | 5 con cols :: {Type} |
| adamc@469 | 6 constraint [id] ~ [parent] |
| adamc@469 | 7 constraint [id, parent] ~ cols |
| adamc@469 | 8 |
| adamc@723 | 9 val key_inj : sql_injectable_prim key |
| adamc@469 | 10 |
| adamc@706 | 11 table tab : ([id = key, parent = option key] ++ cols) |
| adamc@469 | 12 end) : sig |
| adamc@469 | 13 |
| adamc@469 | 14 con id = M.id |
| adamc@469 | 15 con parent = M.parent |
| adamc@469 | 16 |
| adamc@469 | 17 val tree : ($([id = M.key, parent = option M.key] ++ M.cols) -> xbody) |
| adamc@469 | 18 -> option M.key |
| adamc@469 | 19 -> transaction xbody |
| adamc@469 | 20 |
| adamc@469 | 21 end |