diff options
| author |  letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2010-05-21 16:13:58 +0000 |
|---|---|---|
| committer | letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2010-05-21 16:13:58 +0000 |
| commit | 9545a01076cc7b79d0d3278b1ba12e3249149716 (patch) | |
| tree | b66405b976619de4a3d2d45369c034629c06ac87 /plugins/extraction/scheme.ml | |
| parent | 63fe9ca9438693fcf4d601c05f77a4db50588b40 (diff) | |
Extract Inductive is now possible toward non-inductive types (e.g. nat => int)
For instance:
Extract Inductive nat => int [ "0" "succ" ]
"(fun fO fS n => if n=0 then fO () else fS (n-1))".
See Extraction.v for more details and caveat.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13025 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'plugins/extraction/scheme.ml')
| -rw-r--r-- | plugins/extraction/scheme.ml | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/plugins/extraction/scheme.ml b/plugins/extraction/scheme.ml index 6a44812da..f7a0b5a53 100644 --- a/plugins/extraction/scheme.ml +++ b/plugins/extraction/scheme.ml @@ -94,7 +94,15 @@ let rec pp_expr env args = prlist_with_sep spc (pp_cons_args env) args') in if i = Coinductive then paren (str "delay " ++ st) else st - | MLcase ((i,_),t, pv) -> + | MLcase (_,t,pv) when is_custom_match pv -> + let mkfun (_,ids,e) = + if ids <> [] then named_lams (List.rev ids) e + else dummy_lams (ast_lift 1 e) 1 + in + hov 2 (str (find_custom_match pv) ++ fnl () ++ + prvect (fun tr -> pp_expr env [] (mkfun tr) ++ fnl ()) pv + ++ pp_expr env [] t) + | MLcase ((i,_),t, pv) -> let e = if i <> Coinductive then pp_expr env [] t else paren (str "force" ++ spc () ++ pp_expr env [] t) |